2 * Copyright 2012 Advanced Micro Devices, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 #include "util/u_memory.h"
26 #include "util/u_string.h"
27 #include "tgsi/tgsi_build.h"
28 #include "tgsi/tgsi_strings.h"
29 #include "tgsi/tgsi_util.h"
30 #include "tgsi/tgsi_dump.h"
31 #include "tgsi/tgsi_from_mesa.h"
33 #include "ac_binary.h"
34 #include "ac_exp_param.h"
35 #include "ac_shader_util.h"
37 #include "ac_llvm_util.h"
38 #include "si_shader_internal.h"
42 #include "compiler/nir/nir.h"
44 static const char scratch_rsrc_dword0_symbol
[] =
45 "SCRATCH_RSRC_DWORD0";
47 static const char scratch_rsrc_dword1_symbol
[] =
48 "SCRATCH_RSRC_DWORD1";
50 static void si_init_shader_ctx(struct si_shader_context
*ctx
,
51 struct si_screen
*sscreen
,
52 struct ac_llvm_compiler
*compiler
,
55 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
56 struct lp_build_tgsi_context
*bld_base
,
57 struct lp_build_emit_data
*emit_data
);
59 static void si_dump_shader_key(const struct si_shader
*shader
, FILE *f
);
61 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
62 union si_shader_part_key
*key
);
63 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
64 union si_shader_part_key
*key
);
65 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
66 union si_shader_part_key
*key
);
67 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
68 union si_shader_part_key
*key
);
69 static void si_fix_resource_usage(struct si_screen
*sscreen
,
70 struct si_shader
*shader
);
72 /* Ideally pass the sample mask input to the PS epilog as v14, which
73 * is its usual location, so that the shader doesn't have to add v_mov.
75 #define PS_EPILOG_SAMPLEMASK_MIN_LOC 14
77 static bool llvm_type_is_64bit(struct si_shader_context
*ctx
,
80 if (type
== ctx
->ac
.i64
|| type
== ctx
->ac
.f64
)
86 /** Whether the shader runs as a combination of multiple API shaders */
87 static bool is_multi_part_shader(struct si_shader_context
*ctx
)
89 if (ctx
->screen
->info
.chip_class
<= GFX8
)
92 return ctx
->shader
->key
.as_ls
||
93 ctx
->shader
->key
.as_es
||
94 ctx
->type
== PIPE_SHADER_TESS_CTRL
||
95 ctx
->type
== PIPE_SHADER_GEOMETRY
;
98 /** Whether the shader runs on a merged HW stage (LSHS or ESGS) */
99 static bool is_merged_shader(struct si_shader_context
*ctx
)
101 return ctx
->shader
->key
.as_ngg
|| is_multi_part_shader(ctx
);
104 void si_init_function_info(struct si_function_info
*fninfo
)
106 fninfo
->num_params
= 0;
107 fninfo
->num_sgpr_params
= 0;
110 unsigned add_arg_assign(struct si_function_info
*fninfo
,
111 enum si_arg_regfile regfile
, LLVMTypeRef type
,
112 LLVMValueRef
*assign
)
114 assert(regfile
!= ARG_SGPR
|| fninfo
->num_sgpr_params
== fninfo
->num_params
);
116 unsigned idx
= fninfo
->num_params
++;
117 assert(idx
< ARRAY_SIZE(fninfo
->types
));
119 if (regfile
== ARG_SGPR
)
120 fninfo
->num_sgpr_params
= fninfo
->num_params
;
122 fninfo
->types
[idx
] = type
;
123 fninfo
->assign
[idx
] = assign
;
127 static unsigned add_arg(struct si_function_info
*fninfo
,
128 enum si_arg_regfile regfile
, LLVMTypeRef type
)
130 return add_arg_assign(fninfo
, regfile
, type
, NULL
);
133 static void add_arg_assign_checked(struct si_function_info
*fninfo
,
134 enum si_arg_regfile regfile
, LLVMTypeRef type
,
135 LLVMValueRef
*assign
, unsigned idx
)
137 MAYBE_UNUSED
unsigned actual
= add_arg_assign(fninfo
, regfile
, type
, assign
);
138 assert(actual
== idx
);
141 static void add_arg_checked(struct si_function_info
*fninfo
,
142 enum si_arg_regfile regfile
, LLVMTypeRef type
,
145 add_arg_assign_checked(fninfo
, regfile
, type
, NULL
, idx
);
149 * Returns a unique index for a per-patch semantic name and index. The index
150 * must be less than 32, so that a 32-bit bitmask of used inputs or outputs
153 unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name
, unsigned index
)
155 switch (semantic_name
) {
156 case TGSI_SEMANTIC_TESSOUTER
:
158 case TGSI_SEMANTIC_TESSINNER
:
160 case TGSI_SEMANTIC_PATCH
:
165 assert(!"invalid semantic name");
171 * Returns a unique index for a semantic name and index. The index must be
172 * less than 64, so that a 64-bit bitmask of used inputs or outputs can be
175 unsigned si_shader_io_get_unique_index(unsigned semantic_name
, unsigned index
,
178 switch (semantic_name
) {
179 case TGSI_SEMANTIC_POSITION
:
181 case TGSI_SEMANTIC_GENERIC
:
182 /* Since some shader stages use the the highest used IO index
183 * to determine the size to allocate for inputs/outputs
184 * (in LDS, tess and GS rings). GENERIC should be placed right
185 * after POSITION to make that size as small as possible.
187 if (index
< SI_MAX_IO_GENERIC
)
190 assert(!"invalid generic index");
192 case TGSI_SEMANTIC_FOG
:
193 return SI_MAX_IO_GENERIC
+ 1;
194 case TGSI_SEMANTIC_COLOR
:
196 return SI_MAX_IO_GENERIC
+ 2 + index
;
197 case TGSI_SEMANTIC_BCOLOR
:
199 /* If it's a varying, COLOR and BCOLOR alias. */
201 return SI_MAX_IO_GENERIC
+ 2 + index
;
203 return SI_MAX_IO_GENERIC
+ 4 + index
;
204 case TGSI_SEMANTIC_TEXCOORD
:
206 return SI_MAX_IO_GENERIC
+ 6 + index
;
208 /* These are rarely used between LS and HS or ES and GS. */
209 case TGSI_SEMANTIC_CLIPDIST
:
211 return SI_MAX_IO_GENERIC
+ 6 + 8 + index
;
212 case TGSI_SEMANTIC_CLIPVERTEX
:
213 return SI_MAX_IO_GENERIC
+ 6 + 8 + 2;
214 case TGSI_SEMANTIC_PSIZE
:
215 return SI_MAX_IO_GENERIC
+ 6 + 8 + 3;
217 /* These can't be written by LS, HS, and ES. */
218 case TGSI_SEMANTIC_LAYER
:
219 return SI_MAX_IO_GENERIC
+ 6 + 8 + 4;
220 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
221 return SI_MAX_IO_GENERIC
+ 6 + 8 + 5;
222 case TGSI_SEMANTIC_PRIMID
:
223 STATIC_ASSERT(SI_MAX_IO_GENERIC
+ 6 + 8 + 6 <= 63);
224 return SI_MAX_IO_GENERIC
+ 6 + 8 + 6;
226 fprintf(stderr
, "invalid semantic name = %u\n", semantic_name
);
227 assert(!"invalid semantic name");
233 * Get the value of a shader input parameter and extract a bitfield.
235 static LLVMValueRef
unpack_llvm_param(struct si_shader_context
*ctx
,
236 LLVMValueRef value
, unsigned rshift
,
239 if (LLVMGetTypeKind(LLVMTypeOf(value
)) == LLVMFloatTypeKind
)
240 value
= ac_to_integer(&ctx
->ac
, value
);
243 value
= LLVMBuildLShr(ctx
->ac
.builder
, value
,
244 LLVMConstInt(ctx
->i32
, rshift
, 0), "");
246 if (rshift
+ bitwidth
< 32) {
247 unsigned mask
= (1 << bitwidth
) - 1;
248 value
= LLVMBuildAnd(ctx
->ac
.builder
, value
,
249 LLVMConstInt(ctx
->i32
, mask
, 0), "");
255 LLVMValueRef
si_unpack_param(struct si_shader_context
*ctx
,
256 unsigned param
, unsigned rshift
,
259 LLVMValueRef value
= LLVMGetParam(ctx
->main_fn
, param
);
261 return unpack_llvm_param(ctx
, value
, rshift
, bitwidth
);
264 static LLVMValueRef
get_rel_patch_id(struct si_shader_context
*ctx
)
267 case PIPE_SHADER_TESS_CTRL
:
268 return unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 0, 8);
270 case PIPE_SHADER_TESS_EVAL
:
271 return LLVMGetParam(ctx
->main_fn
,
272 ctx
->param_tes_rel_patch_id
);
280 /* Tessellation shaders pass outputs to the next shader using LDS.
282 * LS outputs = TCS inputs
283 * TCS outputs = TES inputs
286 * - TCS inputs for patch 0
287 * - TCS inputs for patch 1
288 * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2)
290 * - TCS outputs for patch 0 = get_tcs_out_patch0_offset
291 * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset
292 * - TCS outputs for patch 1
293 * - Per-patch TCS outputs for patch 1
294 * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2)
295 * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2)
298 * All three shaders VS(LS), TCS, TES share the same LDS space.
302 get_tcs_in_patch_stride(struct si_shader_context
*ctx
)
304 return si_unpack_param(ctx
, ctx
->param_vs_state_bits
, 8, 13);
307 static unsigned get_tcs_out_vertex_dw_stride_constant(struct si_shader_context
*ctx
)
309 assert(ctx
->type
== PIPE_SHADER_TESS_CTRL
);
311 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
312 return util_last_bit64(ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
) * 4;
314 return util_last_bit64(ctx
->shader
->selector
->outputs_written
) * 4;
317 static LLVMValueRef
get_tcs_out_vertex_dw_stride(struct si_shader_context
*ctx
)
319 unsigned stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
321 return LLVMConstInt(ctx
->i32
, stride
, 0);
324 static LLVMValueRef
get_tcs_out_patch_stride(struct si_shader_context
*ctx
)
326 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
327 return si_unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 0, 13);
329 const struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
330 unsigned tcs_out_vertices
= info
->properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
];
331 unsigned vertex_dw_stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
332 unsigned num_patch_outputs
= util_last_bit64(ctx
->shader
->selector
->patch_outputs_written
);
333 unsigned patch_dw_stride
= tcs_out_vertices
* vertex_dw_stride
+
334 num_patch_outputs
* 4;
335 return LLVMConstInt(ctx
->i32
, patch_dw_stride
, 0);
339 get_tcs_out_patch0_offset(struct si_shader_context
*ctx
)
341 return LLVMBuildMul(ctx
->ac
.builder
,
343 ctx
->param_tcs_out_lds_offsets
,
345 LLVMConstInt(ctx
->i32
, 4, 0), "");
349 get_tcs_out_patch0_patch_data_offset(struct si_shader_context
*ctx
)
351 return LLVMBuildMul(ctx
->ac
.builder
,
353 ctx
->param_tcs_out_lds_offsets
,
355 LLVMConstInt(ctx
->i32
, 4, 0), "");
359 get_tcs_in_current_patch_offset(struct si_shader_context
*ctx
)
361 LLVMValueRef patch_stride
= get_tcs_in_patch_stride(ctx
);
362 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
364 return LLVMBuildMul(ctx
->ac
.builder
, patch_stride
, rel_patch_id
, "");
368 get_tcs_out_current_patch_offset(struct si_shader_context
*ctx
)
370 LLVMValueRef patch0_offset
= get_tcs_out_patch0_offset(ctx
);
371 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
372 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
374 return ac_build_imad(&ctx
->ac
, patch_stride
, rel_patch_id
, patch0_offset
);
378 get_tcs_out_current_patch_data_offset(struct si_shader_context
*ctx
)
380 LLVMValueRef patch0_patch_data_offset
=
381 get_tcs_out_patch0_patch_data_offset(ctx
);
382 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
383 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
385 return ac_build_imad(&ctx
->ac
, patch_stride
, rel_patch_id
, patch0_patch_data_offset
);
388 static LLVMValueRef
get_num_tcs_out_vertices(struct si_shader_context
*ctx
)
390 unsigned tcs_out_vertices
=
391 ctx
->shader
->selector
?
392 ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
] : 0;
394 /* If !tcs_out_vertices, it's either the fixed-func TCS or the TCS epilog. */
395 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&& tcs_out_vertices
)
396 return LLVMConstInt(ctx
->i32
, tcs_out_vertices
, 0);
398 return si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 6, 6);
401 static LLVMValueRef
get_tcs_in_vertex_dw_stride(struct si_shader_context
*ctx
)
406 case PIPE_SHADER_VERTEX
:
407 stride
= ctx
->shader
->selector
->lshs_vertex_stride
/ 4;
408 return LLVMConstInt(ctx
->i32
, stride
, 0);
410 case PIPE_SHADER_TESS_CTRL
:
411 if (ctx
->screen
->info
.chip_class
>= GFX9
&&
412 ctx
->shader
->is_monolithic
) {
413 stride
= ctx
->shader
->key
.part
.tcs
.ls
->lshs_vertex_stride
/ 4;
414 return LLVMConstInt(ctx
->i32
, stride
, 0);
416 return si_unpack_param(ctx
, ctx
->param_vs_state_bits
, 24, 8);
424 static LLVMValueRef
unpack_sint16(struct si_shader_context
*ctx
,
425 LLVMValueRef i32
, unsigned index
)
430 return LLVMBuildAShr(ctx
->ac
.builder
, i32
,
431 LLVMConstInt(ctx
->i32
, 16, 0), "");
433 return LLVMBuildSExt(ctx
->ac
.builder
,
434 LLVMBuildTrunc(ctx
->ac
.builder
, i32
,
439 void si_llvm_load_input_vs(
440 struct si_shader_context
*ctx
,
441 unsigned input_index
,
444 const struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
445 unsigned vs_blit_property
= info
->properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
447 if (vs_blit_property
) {
448 LLVMValueRef vertex_id
= ctx
->abi
.vertex_id
;
449 LLVMValueRef sel_x1
= LLVMBuildICmp(ctx
->ac
.builder
,
450 LLVMIntULE
, vertex_id
,
452 /* Use LLVMIntNE, because we have 3 vertices and only
453 * the middle one should use y2.
455 LLVMValueRef sel_y1
= LLVMBuildICmp(ctx
->ac
.builder
,
456 LLVMIntNE
, vertex_id
,
459 if (input_index
== 0) {
461 LLVMValueRef x1y1
= LLVMGetParam(ctx
->main_fn
,
462 ctx
->param_vs_blit_inputs
);
463 LLVMValueRef x2y2
= LLVMGetParam(ctx
->main_fn
,
464 ctx
->param_vs_blit_inputs
+ 1);
466 LLVMValueRef x1
= unpack_sint16(ctx
, x1y1
, 0);
467 LLVMValueRef y1
= unpack_sint16(ctx
, x1y1
, 1);
468 LLVMValueRef x2
= unpack_sint16(ctx
, x2y2
, 0);
469 LLVMValueRef y2
= unpack_sint16(ctx
, x2y2
, 1);
471 LLVMValueRef x
= LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
473 LLVMValueRef y
= LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
476 out
[0] = LLVMBuildSIToFP(ctx
->ac
.builder
, x
, ctx
->f32
, "");
477 out
[1] = LLVMBuildSIToFP(ctx
->ac
.builder
, y
, ctx
->f32
, "");
478 out
[2] = LLVMGetParam(ctx
->main_fn
,
479 ctx
->param_vs_blit_inputs
+ 2);
480 out
[3] = ctx
->ac
.f32_1
;
484 /* Color or texture coordinates: */
485 assert(input_index
== 1);
487 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
488 for (int i
= 0; i
< 4; i
++) {
489 out
[i
] = LLVMGetParam(ctx
->main_fn
,
490 ctx
->param_vs_blit_inputs
+ 3 + i
);
493 assert(vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
);
494 LLVMValueRef x1
= LLVMGetParam(ctx
->main_fn
,
495 ctx
->param_vs_blit_inputs
+ 3);
496 LLVMValueRef y1
= LLVMGetParam(ctx
->main_fn
,
497 ctx
->param_vs_blit_inputs
+ 4);
498 LLVMValueRef x2
= LLVMGetParam(ctx
->main_fn
,
499 ctx
->param_vs_blit_inputs
+ 5);
500 LLVMValueRef y2
= LLVMGetParam(ctx
->main_fn
,
501 ctx
->param_vs_blit_inputs
+ 6);
503 out
[0] = LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
505 out
[1] = LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
507 out
[2] = LLVMGetParam(ctx
->main_fn
,
508 ctx
->param_vs_blit_inputs
+ 7);
509 out
[3] = LLVMGetParam(ctx
->main_fn
,
510 ctx
->param_vs_blit_inputs
+ 8);
515 union si_vs_fix_fetch fix_fetch
;
516 LLVMValueRef t_list_ptr
;
517 LLVMValueRef t_offset
;
519 LLVMValueRef vertex_index
;
522 /* Load the T list */
523 t_list_ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vertex_buffers
);
525 t_offset
= LLVMConstInt(ctx
->i32
, input_index
, 0);
527 t_list
= ac_build_load_to_sgpr(&ctx
->ac
, t_list_ptr
, t_offset
);
529 vertex_index
= LLVMGetParam(ctx
->main_fn
,
530 ctx
->param_vertex_index0
+
533 /* Use the open-coded implementation for all loads of doubles and
534 * of dword-sized data that needs fixups. We need to insert conversion
535 * code anyway, and the amd/common code does it for us.
537 * Note: On LLVM <= 8, we can only open-code formats with
538 * channel size >= 4 bytes.
540 bool opencode
= ctx
->shader
->key
.mono
.vs_fetch_opencode
& (1 << input_index
);
541 fix_fetch
.bits
= ctx
->shader
->key
.mono
.vs_fix_fetch
[input_index
].bits
;
543 (fix_fetch
.u
.log_size
== 3 && fix_fetch
.u
.format
== AC_FETCH_FORMAT_FLOAT
) ||
544 (fix_fetch
.u
.log_size
== 2)) {
545 tmp
= ac_build_opencoded_load_format(
546 &ctx
->ac
, fix_fetch
.u
.log_size
, fix_fetch
.u
.num_channels_m1
+ 1,
547 fix_fetch
.u
.format
, fix_fetch
.u
.reverse
, !opencode
,
548 t_list
, vertex_index
, ctx
->ac
.i32_0
, ctx
->ac
.i32_0
, 0, true);
549 for (unsigned i
= 0; i
< 4; ++i
)
550 out
[i
] = LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, LLVMConstInt(ctx
->i32
, i
, false), "");
554 /* Do multiple loads for special formats. */
555 unsigned required_channels
= util_last_bit(info
->input_usage_mask
[input_index
]);
556 LLVMValueRef fetches
[4];
557 unsigned num_fetches
;
558 unsigned fetch_stride
;
559 unsigned channels_per_fetch
;
561 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2) {
562 num_fetches
= MIN2(required_channels
, 3);
563 fetch_stride
= 1 << fix_fetch
.u
.log_size
;
564 channels_per_fetch
= 1;
568 channels_per_fetch
= required_channels
;
571 for (unsigned i
= 0; i
< num_fetches
; ++i
) {
572 LLVMValueRef voffset
= LLVMConstInt(ctx
->i32
, fetch_stride
* i
, 0);
573 fetches
[i
] = ac_build_buffer_load_format(&ctx
->ac
, t_list
, vertex_index
, voffset
,
574 channels_per_fetch
, 0, true);
577 if (num_fetches
== 1 && channels_per_fetch
> 1) {
578 LLVMValueRef fetch
= fetches
[0];
579 for (unsigned i
= 0; i
< channels_per_fetch
; ++i
) {
580 tmp
= LLVMConstInt(ctx
->i32
, i
, false);
581 fetches
[i
] = LLVMBuildExtractElement(
582 ctx
->ac
.builder
, fetch
, tmp
, "");
584 num_fetches
= channels_per_fetch
;
585 channels_per_fetch
= 1;
588 for (unsigned i
= num_fetches
; i
< 4; ++i
)
589 fetches
[i
] = LLVMGetUndef(ctx
->f32
);
591 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2 &&
592 required_channels
== 4) {
593 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_UINT
|| fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
)
594 fetches
[3] = ctx
->ac
.i32_1
;
596 fetches
[3] = ctx
->ac
.f32_1
;
597 } else if (fix_fetch
.u
.log_size
== 3 &&
598 (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
||
599 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
||
600 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
) &&
601 required_channels
== 4) {
602 /* For 2_10_10_10, the hardware returns an unsigned value;
603 * convert it to a signed one.
605 LLVMValueRef tmp
= fetches
[3];
606 LLVMValueRef c30
= LLVMConstInt(ctx
->i32
, 30, 0);
608 /* First, recover the sign-extended signed integer value. */
609 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
)
610 tmp
= LLVMBuildFPToUI(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
612 tmp
= ac_to_integer(&ctx
->ac
, tmp
);
614 /* For the integer-like cases, do a natural sign extension.
616 * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0
617 * and happen to contain 0, 1, 2, 3 as the two LSBs of the
620 tmp
= LLVMBuildShl(ctx
->ac
.builder
, tmp
,
621 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
?
622 LLVMConstInt(ctx
->i32
, 7, 0) : c30
, "");
623 tmp
= LLVMBuildAShr(ctx
->ac
.builder
, tmp
, c30
, "");
625 /* Convert back to the right type. */
626 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
) {
628 LLVMValueRef neg_one
= LLVMConstReal(ctx
->f32
, -1.0);
629 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
630 clamp
= LLVMBuildFCmp(ctx
->ac
.builder
, LLVMRealULT
, tmp
, neg_one
, "");
631 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, clamp
, neg_one
, tmp
, "");
632 } else if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
) {
633 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
639 for (unsigned i
= 0; i
< 4; ++i
)
640 out
[i
] = ac_to_float(&ctx
->ac
, fetches
[i
]);
643 static void declare_input_vs(
644 struct si_shader_context
*ctx
,
645 unsigned input_index
,
646 const struct tgsi_full_declaration
*decl
,
649 si_llvm_load_input_vs(ctx
, input_index
, out
);
652 LLVMValueRef
si_get_primitive_id(struct si_shader_context
*ctx
,
659 case PIPE_SHADER_VERTEX
:
660 return LLVMGetParam(ctx
->main_fn
,
661 ctx
->param_vs_prim_id
);
662 case PIPE_SHADER_TESS_CTRL
:
663 return ctx
->abi
.tcs_patch_id
;
664 case PIPE_SHADER_TESS_EVAL
:
665 return ctx
->abi
.tes_patch_id
;
666 case PIPE_SHADER_GEOMETRY
:
667 return ctx
->abi
.gs_prim_id
;
675 * Return the value of tgsi_ind_register for indexing.
676 * This is the indirect index with the constant offset added to it.
678 LLVMValueRef
si_get_indirect_index(struct si_shader_context
*ctx
,
679 const struct tgsi_ind_register
*ind
,
685 if (ind
->File
== TGSI_FILE_ADDRESS
) {
686 result
= ctx
->addrs
[ind
->Index
][ind
->Swizzle
];
687 result
= LLVMBuildLoad(ctx
->ac
.builder
, result
, "");
689 struct tgsi_full_src_register src
= {};
691 src
.Register
.File
= ind
->File
;
692 src
.Register
.Index
= ind
->Index
;
694 /* Set the second index to 0 for constants. */
695 if (ind
->File
== TGSI_FILE_CONSTANT
)
696 src
.Register
.Dimension
= 1;
698 result
= ctx
->bld_base
.emit_fetch_funcs
[ind
->File
](&ctx
->bld_base
, &src
,
701 result
= ac_to_integer(&ctx
->ac
, result
);
704 return ac_build_imad(&ctx
->ac
, result
, LLVMConstInt(ctx
->i32
, addr_mul
, 0),
705 LLVMConstInt(ctx
->i32
, rel_index
, 0));
709 * Like si_get_indirect_index, but restricts the return value to a (possibly
710 * undefined) value inside [0..num).
712 LLVMValueRef
si_get_bounded_indirect_index(struct si_shader_context
*ctx
,
713 const struct tgsi_ind_register
*ind
,
714 int rel_index
, unsigned num
)
716 LLVMValueRef result
= si_get_indirect_index(ctx
, ind
, 1, rel_index
);
718 return si_llvm_bound_index(ctx
, result
, num
);
721 static LLVMValueRef
get_dw_address_from_generic_indices(struct si_shader_context
*ctx
,
722 LLVMValueRef vertex_dw_stride
,
723 LLVMValueRef base_addr
,
724 LLVMValueRef vertex_index
,
725 LLVMValueRef param_index
,
726 unsigned input_index
,
731 if (vertex_dw_stride
) {
732 base_addr
= ac_build_imad(&ctx
->ac
, vertex_index
,
733 vertex_dw_stride
, base_addr
);
737 base_addr
= ac_build_imad(&ctx
->ac
, param_index
,
738 LLVMConstInt(ctx
->i32
, 4, 0), base_addr
);
741 int param
= is_patch
?
742 si_shader_io_get_unique_index_patch(name
[input_index
],
743 index
[input_index
]) :
744 si_shader_io_get_unique_index(name
[input_index
],
745 index
[input_index
], false);
747 /* Add the base address of the element. */
748 return LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
749 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
753 * Calculate a dword address given an input or output register and a stride.
755 static LLVMValueRef
get_dw_address(struct si_shader_context
*ctx
,
756 const struct tgsi_full_dst_register
*dst
,
757 const struct tgsi_full_src_register
*src
,
758 LLVMValueRef vertex_dw_stride
,
759 LLVMValueRef base_addr
)
761 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
762 ubyte
*name
, *index
, *array_first
;
764 struct tgsi_full_dst_register reg
;
765 LLVMValueRef vertex_index
= NULL
;
766 LLVMValueRef ind_index
= NULL
;
768 /* Set the register description. The address computation is the same
769 * for sources and destinations. */
771 reg
.Register
.File
= src
->Register
.File
;
772 reg
.Register
.Index
= src
->Register
.Index
;
773 reg
.Register
.Indirect
= src
->Register
.Indirect
;
774 reg
.Register
.Dimension
= src
->Register
.Dimension
;
775 reg
.Indirect
= src
->Indirect
;
776 reg
.Dimension
= src
->Dimension
;
777 reg
.DimIndirect
= src
->DimIndirect
;
781 /* If the register is 2-dimensional (e.g. an array of vertices
782 * in a primitive), calculate the base address of the vertex. */
783 if (reg
.Register
.Dimension
) {
784 if (reg
.Dimension
.Indirect
)
785 vertex_index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
786 1, reg
.Dimension
.Index
);
788 vertex_index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
791 /* Get information about the register. */
792 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
793 name
= info
->input_semantic_name
;
794 index
= info
->input_semantic_index
;
795 array_first
= info
->input_array_first
;
796 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
797 name
= info
->output_semantic_name
;
798 index
= info
->output_semantic_index
;
799 array_first
= info
->output_array_first
;
805 if (reg
.Register
.Indirect
) {
806 /* Add the relative address of the element. */
807 if (reg
.Indirect
.ArrayID
)
808 input_index
= array_first
[reg
.Indirect
.ArrayID
];
810 input_index
= reg
.Register
.Index
;
812 ind_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
813 1, reg
.Register
.Index
- input_index
);
815 input_index
= reg
.Register
.Index
;
818 return get_dw_address_from_generic_indices(ctx
, vertex_dw_stride
,
819 base_addr
, vertex_index
,
820 ind_index
, input_index
,
822 !reg
.Register
.Dimension
);
825 /* The offchip buffer layout for TCS->TES is
827 * - attribute 0 of patch 0 vertex 0
828 * - attribute 0 of patch 0 vertex 1
829 * - attribute 0 of patch 0 vertex 2
831 * - attribute 0 of patch 1 vertex 0
832 * - attribute 0 of patch 1 vertex 1
834 * - attribute 1 of patch 0 vertex 0
835 * - attribute 1 of patch 0 vertex 1
837 * - per patch attribute 0 of patch 0
838 * - per patch attribute 0 of patch 1
841 * Note that every attribute has 4 components.
843 static LLVMValueRef
get_tcs_tes_buffer_address(struct si_shader_context
*ctx
,
844 LLVMValueRef rel_patch_id
,
845 LLVMValueRef vertex_index
,
846 LLVMValueRef param_index
)
848 LLVMValueRef base_addr
, vertices_per_patch
, num_patches
, total_vertices
;
849 LLVMValueRef param_stride
, constant16
;
851 vertices_per_patch
= get_num_tcs_out_vertices(ctx
);
852 num_patches
= si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 0, 6);
853 total_vertices
= LLVMBuildMul(ctx
->ac
.builder
, vertices_per_patch
,
856 constant16
= LLVMConstInt(ctx
->i32
, 16, 0);
858 base_addr
= ac_build_imad(&ctx
->ac
, rel_patch_id
,
859 vertices_per_patch
, vertex_index
);
860 param_stride
= total_vertices
;
862 base_addr
= rel_patch_id
;
863 param_stride
= num_patches
;
866 base_addr
= ac_build_imad(&ctx
->ac
, param_index
, param_stride
, base_addr
);
867 base_addr
= LLVMBuildMul(ctx
->ac
.builder
, base_addr
, constant16
, "");
870 LLVMValueRef patch_data_offset
=
871 si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 12, 20);
873 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
874 patch_data_offset
, "");
879 /* This is a generic helper that can be shared by the NIR and TGSI backends */
880 static LLVMValueRef
get_tcs_tes_buffer_address_from_generic_indices(
881 struct si_shader_context
*ctx
,
882 LLVMValueRef vertex_index
,
883 LLVMValueRef param_index
,
889 unsigned param_index_base
;
891 param_index_base
= is_patch
?
892 si_shader_io_get_unique_index_patch(name
[param_base
], index
[param_base
]) :
893 si_shader_io_get_unique_index(name
[param_base
], index
[param_base
], false);
896 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
897 LLVMConstInt(ctx
->i32
, param_index_base
, 0),
900 param_index
= LLVMConstInt(ctx
->i32
, param_index_base
, 0);
903 return get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
),
904 vertex_index
, param_index
);
907 static LLVMValueRef
get_tcs_tes_buffer_address_from_reg(
908 struct si_shader_context
*ctx
,
909 const struct tgsi_full_dst_register
*dst
,
910 const struct tgsi_full_src_register
*src
)
912 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
913 ubyte
*name
, *index
, *array_first
;
914 struct tgsi_full_src_register reg
;
915 LLVMValueRef vertex_index
= NULL
;
916 LLVMValueRef param_index
= NULL
;
919 reg
= src
? *src
: tgsi_full_src_register_from_dst(dst
);
921 if (reg
.Register
.Dimension
) {
923 if (reg
.Dimension
.Indirect
)
924 vertex_index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
925 1, reg
.Dimension
.Index
);
927 vertex_index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
930 /* Get information about the register. */
931 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
932 name
= info
->input_semantic_name
;
933 index
= info
->input_semantic_index
;
934 array_first
= info
->input_array_first
;
935 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
936 name
= info
->output_semantic_name
;
937 index
= info
->output_semantic_index
;
938 array_first
= info
->output_array_first
;
944 if (reg
.Register
.Indirect
) {
945 if (reg
.Indirect
.ArrayID
)
946 param_base
= array_first
[reg
.Indirect
.ArrayID
];
948 param_base
= reg
.Register
.Index
;
950 param_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
951 1, reg
.Register
.Index
- param_base
);
954 param_base
= reg
.Register
.Index
;
957 return get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
958 param_index
, param_base
,
959 name
, index
, !reg
.Register
.Dimension
);
962 static LLVMValueRef
buffer_load(struct lp_build_tgsi_context
*bld_base
,
963 LLVMTypeRef type
, unsigned swizzle
,
964 LLVMValueRef buffer
, LLVMValueRef offset
,
965 LLVMValueRef base
, bool can_speculate
)
967 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
968 LLVMValueRef value
, value2
;
969 LLVMTypeRef vec_type
= LLVMVectorType(type
, 4);
972 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
973 0, ac_glc
, can_speculate
, false);
975 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
978 if (!llvm_type_is_64bit(ctx
, type
)) {
979 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
980 0, ac_glc
, can_speculate
, false);
982 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
983 return LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
984 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
987 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
988 swizzle
* 4, ac_glc
, can_speculate
, false);
990 value2
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
991 swizzle
* 4 + 4, ac_glc
, can_speculate
, false);
993 return si_llvm_emit_fetch_64bit(bld_base
, type
, value
, value2
);
997 * Load from LSHS LDS storage.
999 * \param type output value type
1000 * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4
1001 * \param dw_addr address in dwords
1003 static LLVMValueRef
lshs_lds_load(struct lp_build_tgsi_context
*bld_base
,
1004 LLVMTypeRef type
, unsigned swizzle
,
1005 LLVMValueRef dw_addr
)
1007 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1010 if (swizzle
== ~0) {
1011 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1013 for (unsigned chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++)
1014 values
[chan
] = lshs_lds_load(bld_base
, type
, chan
, dw_addr
);
1016 return ac_build_gather_values(&ctx
->ac
, values
,
1020 /* Split 64-bit loads. */
1021 if (llvm_type_is_64bit(ctx
, type
)) {
1022 LLVMValueRef lo
, hi
;
1024 lo
= lshs_lds_load(bld_base
, ctx
->i32
, swizzle
, dw_addr
);
1025 hi
= lshs_lds_load(bld_base
, ctx
->i32
, swizzle
+ 1, dw_addr
);
1026 return si_llvm_emit_fetch_64bit(bld_base
, type
, lo
, hi
);
1029 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
1030 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
1032 value
= ac_lds_load(&ctx
->ac
, dw_addr
);
1034 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1038 * Store to LSHS LDS storage.
1040 * \param swizzle offset (typically 0..3)
1041 * \param dw_addr address in dwords
1042 * \param value value to store
1044 static void lshs_lds_store(struct si_shader_context
*ctx
,
1045 unsigned dw_offset_imm
, LLVMValueRef dw_addr
,
1048 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
1049 LLVMConstInt(ctx
->i32
, dw_offset_imm
, 0), "");
1051 ac_lds_store(&ctx
->ac
, dw_addr
, value
);
1056 TESS_OFFCHIP_RING_TCS
,
1057 TESS_OFFCHIP_RING_TES
,
1060 static LLVMValueRef
get_tess_ring_descriptor(struct si_shader_context
*ctx
,
1061 enum si_tess_ring ring
)
1063 LLVMBuilderRef builder
= ctx
->ac
.builder
;
1064 unsigned param
= ring
== TESS_OFFCHIP_RING_TES
? ctx
->param_tes_offchip_addr
:
1065 ctx
->param_tcs_out_lds_layout
;
1066 LLVMValueRef addr
= LLVMGetParam(ctx
->main_fn
, param
);
1068 /* TCS only receives high 13 bits of the address. */
1069 if (ring
== TESS_OFFCHIP_RING_TCS
|| ring
== TCS_FACTOR_RING
) {
1070 addr
= LLVMBuildAnd(builder
, addr
,
1071 LLVMConstInt(ctx
->i32
, 0xfff80000, 0), "");
1074 if (ring
== TCS_FACTOR_RING
) {
1075 unsigned tf_offset
= ctx
->screen
->tess_offchip_ring_size
;
1076 addr
= LLVMBuildAdd(builder
, addr
,
1077 LLVMConstInt(ctx
->i32
, tf_offset
, 0), "");
1080 uint32_t rsrc3
= S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
1081 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
1082 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
1083 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
);
1085 if (ctx
->screen
->info
.chip_class
>= GFX10
)
1086 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
1087 S_008F0C_OOB_SELECT(3) |
1088 S_008F0C_RESOURCE_LEVEL(1);
1090 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
1091 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
);
1093 LLVMValueRef desc
[4];
1095 desc
[1] = LLVMConstInt(ctx
->i32
,
1096 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
1097 desc
[2] = LLVMConstInt(ctx
->i32
, 0xffffffff, 0);
1098 desc
[3] = LLVMConstInt(ctx
->i32
, rsrc3
, false);
1100 return ac_build_gather_values(&ctx
->ac
, desc
, 4);
1103 static LLVMValueRef
fetch_input_tcs(
1104 struct lp_build_tgsi_context
*bld_base
,
1105 const struct tgsi_full_src_register
*reg
,
1106 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1108 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1109 LLVMValueRef dw_addr
, stride
;
1110 unsigned swizzle
= swizzle_in
& 0xffff;
1111 stride
= get_tcs_in_vertex_dw_stride(ctx
);
1112 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
1113 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1115 return lshs_lds_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
, dw_addr
);
1118 static LLVMValueRef
si_nir_load_tcs_varyings(struct ac_shader_abi
*abi
,
1120 LLVMValueRef vertex_index
,
1121 LLVMValueRef param_index
,
1122 unsigned const_index
,
1124 unsigned driver_location
,
1126 unsigned num_components
,
1131 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1132 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1133 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
1134 LLVMValueRef dw_addr
, stride
;
1136 driver_location
= driver_location
/ 4;
1139 stride
= get_tcs_in_vertex_dw_stride(ctx
);
1140 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
1144 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1146 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1147 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1152 /* Add the constant index to the indirect index */
1153 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1154 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1156 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1162 names
= info
->input_semantic_name
;
1163 indices
= info
->input_semantic_index
;
1165 names
= info
->output_semantic_name
;
1166 indices
= info
->output_semantic_index
;
1169 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
1170 vertex_index
, param_index
,
1175 LLVMValueRef value
[4];
1176 for (unsigned i
= 0; i
< num_components
; i
++) {
1177 unsigned offset
= i
;
1178 if (llvm_type_is_64bit(ctx
, type
))
1181 offset
+= component
;
1182 value
[i
+ component
] = lshs_lds_load(bld_base
, type
, offset
, dw_addr
);
1185 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1188 static LLVMValueRef
fetch_output_tcs(
1189 struct lp_build_tgsi_context
*bld_base
,
1190 const struct tgsi_full_src_register
*reg
,
1191 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1193 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1194 LLVMValueRef dw_addr
, stride
;
1195 unsigned swizzle
= (swizzle_in
& 0xffff);
1197 if (reg
->Register
.Dimension
) {
1198 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1199 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1200 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1202 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1203 dw_addr
= get_dw_address(ctx
, NULL
, reg
, NULL
, dw_addr
);
1206 return lshs_lds_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
, dw_addr
);
1209 static LLVMValueRef
fetch_input_tes(
1210 struct lp_build_tgsi_context
*bld_base
,
1211 const struct tgsi_full_src_register
*reg
,
1212 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1214 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1215 LLVMValueRef base
, addr
;
1216 unsigned swizzle
= (swizzle_in
& 0xffff);
1218 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1219 addr
= get_tcs_tes_buffer_address_from_reg(ctx
, NULL
, reg
);
1221 return buffer_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
,
1222 ctx
->tess_offchip_ring
, base
, addr
, true);
1225 LLVMValueRef
si_nir_load_input_tes(struct ac_shader_abi
*abi
,
1227 LLVMValueRef vertex_index
,
1228 LLVMValueRef param_index
,
1229 unsigned const_index
,
1231 unsigned driver_location
,
1233 unsigned num_components
,
1238 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1239 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1240 LLVMValueRef base
, addr
;
1242 driver_location
= driver_location
/ 4;
1244 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1247 /* Add the constant index to the indirect index */
1248 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1249 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1251 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1254 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
1255 param_index
, driver_location
,
1256 info
->input_semantic_name
,
1257 info
->input_semantic_index
,
1260 /* TODO: This will generate rather ordinary llvm code, although it
1261 * should be easy for the optimiser to fix up. In future we might want
1262 * to refactor buffer_load(), but for now this maximises code sharing
1263 * between the NIR and TGSI backends.
1265 LLVMValueRef value
[4];
1266 for (unsigned i
= 0; i
< num_components
; i
++) {
1267 unsigned offset
= i
;
1268 if (llvm_type_is_64bit(ctx
, type
)) {
1271 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
1274 driver_location
+ 1,
1275 info
->input_semantic_name
,
1276 info
->input_semantic_index
,
1280 offset
= offset
% 4;
1283 offset
+= component
;
1284 value
[i
+ component
] = buffer_load(&ctx
->bld_base
, type
, offset
,
1285 ctx
->tess_offchip_ring
, base
, addr
, true);
1288 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1291 static void store_output_tcs(struct lp_build_tgsi_context
*bld_base
,
1292 const struct tgsi_full_instruction
*inst
,
1293 const struct tgsi_opcode_info
*info
,
1295 LLVMValueRef dst
[4])
1297 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1298 const struct tgsi_full_dst_register
*reg
= &inst
->Dst
[index
];
1299 const struct tgsi_shader_info
*sh_info
= &ctx
->shader
->selector
->info
;
1300 unsigned chan_index
;
1301 LLVMValueRef dw_addr
, stride
;
1302 LLVMValueRef buffer
, base
, buf_addr
;
1303 LLVMValueRef values
[4];
1304 bool skip_lds_store
;
1305 bool is_tess_factor
= false, is_tess_inner
= false;
1307 /* Only handle per-patch and per-vertex outputs here.
1308 * Vectors will be lowered to scalars and this function will be called again.
1310 if (reg
->Register
.File
!= TGSI_FILE_OUTPUT
||
1311 (dst
[0] && LLVMGetTypeKind(LLVMTypeOf(dst
[0])) == LLVMVectorTypeKind
)) {
1312 si_llvm_emit_store(bld_base
, inst
, info
, index
, dst
);
1316 if (reg
->Register
.Dimension
) {
1317 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1318 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1319 dw_addr
= get_dw_address(ctx
, reg
, NULL
, stride
, dw_addr
);
1320 skip_lds_store
= !sh_info
->reads_pervertex_outputs
;
1322 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1323 dw_addr
= get_dw_address(ctx
, reg
, NULL
, NULL
, dw_addr
);
1324 skip_lds_store
= !sh_info
->reads_perpatch_outputs
;
1326 if (!reg
->Register
.Indirect
) {
1327 int name
= sh_info
->output_semantic_name
[reg
->Register
.Index
];
1329 /* Always write tess factors into LDS for the TCS epilog. */
1330 if (name
== TGSI_SEMANTIC_TESSINNER
||
1331 name
== TGSI_SEMANTIC_TESSOUTER
) {
1332 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1333 skip_lds_store
= !sh_info
->reads_tessfactor_outputs
&&
1334 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
;
1335 is_tess_factor
= true;
1336 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1341 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
1343 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1344 buf_addr
= get_tcs_tes_buffer_address_from_reg(ctx
, reg
, NULL
);
1346 uint32_t writemask
= reg
->Register
.WriteMask
;
1348 chan_index
= u_bit_scan(&writemask
);
1349 LLVMValueRef value
= dst
[chan_index
];
1351 if (inst
->Instruction
.Saturate
)
1352 value
= ac_build_clamp(&ctx
->ac
, value
);
1354 /* Skip LDS stores if there is no LDS read of this output. */
1355 if (!skip_lds_store
)
1356 lshs_lds_store(ctx
, chan_index
, dw_addr
, value
);
1358 value
= ac_to_integer(&ctx
->ac
, value
);
1359 values
[chan_index
] = value
;
1361 if (reg
->Register
.WriteMask
!= 0xF && !is_tess_factor
) {
1362 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1364 4 * chan_index
, ac_glc
, false);
1367 /* Write tess factors into VGPRs for the epilog. */
1368 if (is_tess_factor
&&
1369 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
1370 if (!is_tess_inner
) {
1371 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1372 ctx
->invoc0_tess_factors
[chan_index
]);
1373 } else if (chan_index
< 2) {
1374 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1375 ctx
->invoc0_tess_factors
[4 + chan_index
]);
1380 if (reg
->Register
.WriteMask
== 0xF && !is_tess_factor
) {
1381 LLVMValueRef value
= ac_build_gather_values(&ctx
->ac
,
1383 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buf_addr
,
1384 base
, 0, ac_glc
, false);
1388 static void si_nir_store_output_tcs(struct ac_shader_abi
*abi
,
1389 const struct nir_variable
*var
,
1390 LLVMValueRef vertex_index
,
1391 LLVMValueRef param_index
,
1392 unsigned const_index
,
1396 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1397 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1398 const unsigned component
= var
->data
.location_frac
;
1399 const bool is_patch
= var
->data
.patch
;
1400 unsigned driver_location
= var
->data
.driver_location
;
1401 LLVMValueRef dw_addr
, stride
;
1402 LLVMValueRef buffer
, base
, addr
;
1403 LLVMValueRef values
[8];
1404 bool skip_lds_store
;
1405 bool is_tess_factor
= false, is_tess_inner
= false;
1407 driver_location
= driver_location
/ 4;
1410 /* Add the constant index to the indirect index */
1411 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1412 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1414 if (const_index
!= 0)
1415 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1419 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1420 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1421 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
1422 vertex_index
, param_index
,
1424 info
->output_semantic_name
,
1425 info
->output_semantic_index
,
1428 skip_lds_store
= !info
->reads_pervertex_outputs
;
1430 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1431 dw_addr
= get_dw_address_from_generic_indices(ctx
, NULL
, dw_addr
,
1432 vertex_index
, param_index
,
1434 info
->output_semantic_name
,
1435 info
->output_semantic_index
,
1438 skip_lds_store
= !info
->reads_perpatch_outputs
;
1441 int name
= info
->output_semantic_name
[driver_location
];
1443 /* Always write tess factors into LDS for the TCS epilog. */
1444 if (name
== TGSI_SEMANTIC_TESSINNER
||
1445 name
== TGSI_SEMANTIC_TESSOUTER
) {
1446 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1447 skip_lds_store
= !info
->reads_tessfactor_outputs
&&
1448 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
;
1449 is_tess_factor
= true;
1450 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1455 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
1457 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1459 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
1460 param_index
, driver_location
,
1461 info
->output_semantic_name
,
1462 info
->output_semantic_index
,
1465 for (unsigned chan
= 0; chan
< 8; chan
++) {
1466 if (!(writemask
& (1 << chan
)))
1468 LLVMValueRef value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- component
);
1470 unsigned buffer_store_offset
= chan
% 4;
1472 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
1475 driver_location
+ 1,
1476 info
->output_semantic_name
,
1477 info
->output_semantic_index
,
1481 /* Skip LDS stores if there is no LDS read of this output. */
1482 if (!skip_lds_store
)
1483 lshs_lds_store(ctx
, chan
, dw_addr
, value
);
1485 value
= ac_to_integer(&ctx
->ac
, value
);
1486 values
[chan
] = value
;
1488 if (writemask
!= 0xF && !is_tess_factor
) {
1489 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1491 4 * buffer_store_offset
,
1495 /* Write tess factors into VGPRs for the epilog. */
1496 if (is_tess_factor
&&
1497 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
1498 if (!is_tess_inner
) {
1499 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1500 ctx
->invoc0_tess_factors
[chan
]);
1501 } else if (chan
< 2) {
1502 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1503 ctx
->invoc0_tess_factors
[4 + chan
]);
1508 if (writemask
== 0xF && !is_tess_factor
) {
1509 LLVMValueRef value
= ac_build_gather_values(&ctx
->ac
,
1511 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, addr
,
1512 base
, 0, ac_glc
, false);
1516 LLVMValueRef
si_llvm_load_input_gs(struct ac_shader_abi
*abi
,
1517 unsigned input_index
,
1518 unsigned vtx_offset_param
,
1522 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1523 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
1524 struct si_shader
*shader
= ctx
->shader
;
1525 LLVMValueRef vtx_offset
, soffset
;
1526 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1527 unsigned semantic_name
= info
->input_semantic_name
[input_index
];
1528 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1532 param
= si_shader_io_get_unique_index(semantic_name
, semantic_index
, false);
1534 /* GFX9 has the ESGS ring in LDS. */
1535 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
1536 unsigned index
= vtx_offset_param
;
1538 switch (index
/ 2) {
1540 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx01_offset
,
1541 index
% 2 ? 16 : 0, 16);
1544 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx23_offset
,
1545 index
% 2 ? 16 : 0, 16);
1548 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx45_offset
,
1549 index
% 2 ? 16 : 0, 16);
1556 unsigned offset
= param
* 4 + swizzle
;
1557 vtx_offset
= LLVMBuildAdd(ctx
->ac
.builder
, vtx_offset
,
1558 LLVMConstInt(ctx
->i32
, offset
, false), "");
1560 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->esgs_ring
, vtx_offset
);
1561 LLVMValueRef value
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1562 if (llvm_type_is_64bit(ctx
, type
)) {
1563 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
,
1564 &ctx
->ac
.i32_1
, 1, "");
1565 LLVMValueRef values
[2] = {
1567 LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "")
1569 value
= ac_build_gather_values(&ctx
->ac
, values
, 2);
1571 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1574 /* GFX6: input load from the ESGS ring in memory. */
1575 if (swizzle
== ~0) {
1576 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1578 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1579 values
[chan
] = si_llvm_load_input_gs(abi
, input_index
, vtx_offset_param
,
1582 return ac_build_gather_values(&ctx
->ac
, values
,
1586 /* Get the vertex offset parameter on GFX6. */
1587 LLVMValueRef gs_vtx_offset
= ctx
->gs_vtx_offset
[vtx_offset_param
];
1589 vtx_offset
= LLVMBuildMul(ctx
->ac
.builder
, gs_vtx_offset
,
1590 LLVMConstInt(ctx
->i32
, 4, 0), "");
1592 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
) * 256, 0);
1594 value
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1, ctx
->i32_0
,
1595 vtx_offset
, soffset
, 0, ac_glc
, true, false);
1596 if (llvm_type_is_64bit(ctx
, type
)) {
1597 LLVMValueRef value2
;
1598 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
+ 1) * 256, 0);
1600 value2
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1,
1601 ctx
->i32_0
, vtx_offset
, soffset
,
1602 0, ac_glc
, true, false);
1603 return si_llvm_emit_fetch_64bit(bld_base
, type
, value
, value2
);
1605 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1608 static LLVMValueRef
si_nir_load_input_gs(struct ac_shader_abi
*abi
,
1610 unsigned driver_location
,
1612 unsigned num_components
,
1613 unsigned vertex_index
,
1614 unsigned const_index
,
1617 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1619 LLVMValueRef value
[4];
1620 for (unsigned i
= 0; i
< num_components
; i
++) {
1621 unsigned offset
= i
;
1622 if (llvm_type_is_64bit(ctx
, type
))
1625 offset
+= component
;
1626 value
[i
+ component
] = si_llvm_load_input_gs(&ctx
->abi
, driver_location
/ 4,
1627 vertex_index
, type
, offset
);
1630 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1633 static LLVMValueRef
fetch_input_gs(
1634 struct lp_build_tgsi_context
*bld_base
,
1635 const struct tgsi_full_src_register
*reg
,
1636 enum tgsi_opcode_type type
,
1637 unsigned swizzle_in
)
1639 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1640 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1641 unsigned swizzle
= swizzle_in
& 0xffff;
1643 unsigned semantic_name
= info
->input_semantic_name
[reg
->Register
.Index
];
1644 if (swizzle
!= ~0 && semantic_name
== TGSI_SEMANTIC_PRIMID
)
1645 return si_get_primitive_id(ctx
, swizzle
);
1647 if (!reg
->Register
.Dimension
)
1650 return si_llvm_load_input_gs(&ctx
->abi
, reg
->Register
.Index
,
1651 reg
->Dimension
.Index
,
1652 tgsi2llvmtype(bld_base
, type
),
1656 static int lookup_interp_param_index(unsigned interpolate
, unsigned location
)
1658 switch (interpolate
) {
1659 case TGSI_INTERPOLATE_CONSTANT
:
1662 case TGSI_INTERPOLATE_LINEAR
:
1663 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1664 return SI_PARAM_LINEAR_SAMPLE
;
1665 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1666 return SI_PARAM_LINEAR_CENTROID
;
1668 return SI_PARAM_LINEAR_CENTER
;
1670 case TGSI_INTERPOLATE_COLOR
:
1671 case TGSI_INTERPOLATE_PERSPECTIVE
:
1672 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1673 return SI_PARAM_PERSP_SAMPLE
;
1674 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1675 return SI_PARAM_PERSP_CENTROID
;
1677 return SI_PARAM_PERSP_CENTER
;
1680 fprintf(stderr
, "Warning: Unhandled interpolation mode.\n");
1685 static LLVMValueRef
si_build_fs_interp(struct si_shader_context
*ctx
,
1686 unsigned attr_index
, unsigned chan
,
1687 LLVMValueRef prim_mask
,
1688 LLVMValueRef i
, LLVMValueRef j
)
1691 return ac_build_fs_interp(&ctx
->ac
,
1692 LLVMConstInt(ctx
->i32
, chan
, 0),
1693 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1696 return ac_build_fs_interp_mov(&ctx
->ac
,
1697 LLVMConstInt(ctx
->i32
, 2, 0), /* P0 */
1698 LLVMConstInt(ctx
->i32
, chan
, 0),
1699 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1704 * Interpolate a fragment shader input.
1706 * @param ctx context
1707 * @param input_index index of the input in hardware
1708 * @param semantic_name TGSI_SEMANTIC_*
1709 * @param semantic_index semantic index
1710 * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset)
1711 * @param colors_read_mask color components read (4 bits for each color, 8 bits in total)
1712 * @param interp_param interpolation weights (i,j)
1713 * @param prim_mask SI_PARAM_PRIM_MASK
1714 * @param face SI_PARAM_FRONT_FACE
1715 * @param result the return value (4 components)
1717 static void interp_fs_input(struct si_shader_context
*ctx
,
1718 unsigned input_index
,
1719 unsigned semantic_name
,
1720 unsigned semantic_index
,
1721 unsigned num_interp_inputs
,
1722 unsigned colors_read_mask
,
1723 LLVMValueRef interp_param
,
1724 LLVMValueRef prim_mask
,
1726 LLVMValueRef result
[4])
1728 LLVMValueRef i
= NULL
, j
= NULL
;
1731 /* fs.constant returns the param from the middle vertex, so it's not
1732 * really useful for flat shading. It's meant to be used for custom
1733 * interpolation (but the intrinsic can't fetch from the other two
1736 * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state
1737 * to do the right thing. The only reason we use fs.constant is that
1738 * fs.interp cannot be used on integers, because they can be equal
1741 * When interp is false we will use fs.constant or for newer llvm,
1742 * amdgcn.interp.mov.
1744 bool interp
= interp_param
!= NULL
;
1747 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
,
1748 LLVMVectorType(ctx
->f32
, 2), "");
1750 i
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1752 j
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1756 if (semantic_name
== TGSI_SEMANTIC_COLOR
&&
1757 ctx
->shader
->key
.part
.ps
.prolog
.color_two_side
) {
1758 LLVMValueRef is_face_positive
;
1760 /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1",
1761 * otherwise it's at offset "num_inputs".
1763 unsigned back_attr_offset
= num_interp_inputs
;
1764 if (semantic_index
== 1 && colors_read_mask
& 0xf)
1765 back_attr_offset
+= 1;
1767 is_face_positive
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
1768 face
, ctx
->i32_0
, "");
1770 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1771 LLVMValueRef front
, back
;
1773 front
= si_build_fs_interp(ctx
,
1776 back
= si_build_fs_interp(ctx
,
1777 back_attr_offset
, chan
,
1780 result
[chan
] = LLVMBuildSelect(ctx
->ac
.builder
,
1786 } else if (semantic_name
== TGSI_SEMANTIC_FOG
) {
1787 result
[0] = si_build_fs_interp(ctx
, input_index
,
1788 0, prim_mask
, i
, j
);
1790 result
[2] = LLVMConstReal(ctx
->f32
, 0.0f
);
1791 result
[3] = LLVMConstReal(ctx
->f32
, 1.0f
);
1793 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1794 result
[chan
] = si_build_fs_interp(ctx
,
1801 void si_llvm_load_input_fs(
1802 struct si_shader_context
*ctx
,
1803 unsigned input_index
,
1804 LLVMValueRef out
[4])
1806 struct si_shader
*shader
= ctx
->shader
;
1807 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1808 LLVMValueRef main_fn
= ctx
->main_fn
;
1809 LLVMValueRef interp_param
= NULL
;
1810 int interp_param_idx
;
1811 enum tgsi_semantic semantic_name
= info
->input_semantic_name
[input_index
];
1812 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1813 enum tgsi_interpolate_mode interp_mode
= info
->input_interpolate
[input_index
];
1814 enum tgsi_interpolate_loc interp_loc
= info
->input_interpolate_loc
[input_index
];
1816 /* Get colors from input VGPRs (set by the prolog). */
1817 if (semantic_name
== TGSI_SEMANTIC_COLOR
) {
1818 unsigned colors_read
= shader
->selector
->info
.colors_read
;
1819 unsigned mask
= colors_read
>> (semantic_index
* 4);
1820 unsigned offset
= SI_PARAM_POS_FIXED_PT
+ 1 +
1821 (semantic_index
? util_bitcount(colors_read
& 0xf) : 0);
1822 LLVMValueRef undef
= LLVMGetUndef(ctx
->f32
);
1824 out
[0] = mask
& 0x1 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1825 out
[1] = mask
& 0x2 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1826 out
[2] = mask
& 0x4 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1827 out
[3] = mask
& 0x8 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1831 interp_param_idx
= lookup_interp_param_index(interp_mode
, interp_loc
);
1832 if (interp_param_idx
== -1)
1834 else if (interp_param_idx
) {
1835 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
1838 interp_fs_input(ctx
, input_index
, semantic_name
,
1839 semantic_index
, 0, /* this param is unused */
1840 shader
->selector
->info
.colors_read
, interp_param
,
1842 LLVMGetParam(main_fn
, SI_PARAM_FRONT_FACE
),
1846 static void declare_input_fs(
1847 struct si_shader_context
*ctx
,
1848 unsigned input_index
,
1849 const struct tgsi_full_declaration
*decl
,
1850 LLVMValueRef out
[4])
1852 si_llvm_load_input_fs(ctx
, input_index
, out
);
1855 LLVMValueRef
si_get_sample_id(struct si_shader_context
*ctx
)
1857 return si_unpack_param(ctx
, SI_PARAM_ANCILLARY
, 8, 4);
1860 static LLVMValueRef
get_base_vertex(struct ac_shader_abi
*abi
)
1862 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1864 /* For non-indexed draws, the base vertex set by the driver
1865 * (for direct draws) or the CP (for indirect draws) is the
1866 * first vertex ID, but GLSL expects 0 to be returned.
1868 LLVMValueRef vs_state
= LLVMGetParam(ctx
->main_fn
,
1869 ctx
->param_vs_state_bits
);
1870 LLVMValueRef indexed
;
1872 indexed
= LLVMBuildLShr(ctx
->ac
.builder
, vs_state
, ctx
->i32_1
, "");
1873 indexed
= LLVMBuildTrunc(ctx
->ac
.builder
, indexed
, ctx
->i1
, "");
1875 return LLVMBuildSelect(ctx
->ac
.builder
, indexed
, ctx
->abi
.base_vertex
,
1879 static LLVMValueRef
get_block_size(struct ac_shader_abi
*abi
)
1881 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1883 LLVMValueRef values
[3];
1884 LLVMValueRef result
;
1886 unsigned *properties
= ctx
->shader
->selector
->info
.properties
;
1888 if (properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] != 0) {
1889 unsigned sizes
[3] = {
1890 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
],
1891 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
],
1892 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
]
1895 for (i
= 0; i
< 3; ++i
)
1896 values
[i
] = LLVMConstInt(ctx
->i32
, sizes
[i
], 0);
1898 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
1900 result
= LLVMGetParam(ctx
->main_fn
, ctx
->param_block_size
);
1907 * Load a dword from a constant buffer.
1909 static LLVMValueRef
buffer_load_const(struct si_shader_context
*ctx
,
1910 LLVMValueRef resource
,
1911 LLVMValueRef offset
)
1913 return ac_build_buffer_load(&ctx
->ac
, resource
, 1, NULL
, offset
, NULL
,
1917 static LLVMValueRef
load_sample_position(struct ac_shader_abi
*abi
, LLVMValueRef sample_id
)
1919 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1920 LLVMValueRef desc
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
1921 LLVMValueRef buf_index
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_SAMPLE_POSITIONS
, 0);
1922 LLVMValueRef resource
= ac_build_load_to_sgpr(&ctx
->ac
, desc
, buf_index
);
1924 /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */
1925 LLVMValueRef offset0
= LLVMBuildMul(ctx
->ac
.builder
, sample_id
, LLVMConstInt(ctx
->i32
, 8, 0), "");
1926 LLVMValueRef offset1
= LLVMBuildAdd(ctx
->ac
.builder
, offset0
, LLVMConstInt(ctx
->i32
, 4, 0), "");
1928 LLVMValueRef pos
[4] = {
1929 buffer_load_const(ctx
, resource
, offset0
),
1930 buffer_load_const(ctx
, resource
, offset1
),
1931 LLVMConstReal(ctx
->f32
, 0),
1932 LLVMConstReal(ctx
->f32
, 0)
1935 return ac_build_gather_values(&ctx
->ac
, pos
, 4);
1938 static LLVMValueRef
load_sample_mask_in(struct ac_shader_abi
*abi
)
1940 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1941 return ac_to_integer(&ctx
->ac
, abi
->sample_coverage
);
1944 static LLVMValueRef
si_load_tess_coord(struct ac_shader_abi
*abi
)
1946 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1947 LLVMValueRef coord
[4] = {
1948 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_u
),
1949 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_v
),
1954 /* For triangles, the vector should be (u, v, 1-u-v). */
1955 if (ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TES_PRIM_MODE
] ==
1956 PIPE_PRIM_TRIANGLES
) {
1957 coord
[2] = LLVMBuildFSub(ctx
->ac
.builder
, ctx
->ac
.f32_1
,
1958 LLVMBuildFAdd(ctx
->ac
.builder
,
1959 coord
[0], coord
[1], ""), "");
1961 return ac_build_gather_values(&ctx
->ac
, coord
, 4);
1964 static LLVMValueRef
load_tess_level(struct si_shader_context
*ctx
,
1965 unsigned semantic_name
)
1967 LLVMValueRef base
, addr
;
1969 int param
= si_shader_io_get_unique_index_patch(semantic_name
, 0);
1971 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1972 addr
= get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
), NULL
,
1973 LLVMConstInt(ctx
->i32
, param
, 0));
1975 return buffer_load(&ctx
->bld_base
, ctx
->f32
,
1976 ~0, ctx
->tess_offchip_ring
, base
, addr
, true);
1980 static LLVMValueRef
si_load_tess_level(struct ac_shader_abi
*abi
,
1981 unsigned varying_id
)
1983 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1984 unsigned semantic_name
;
1986 switch (varying_id
) {
1987 case VARYING_SLOT_TESS_LEVEL_INNER
:
1988 semantic_name
= TGSI_SEMANTIC_TESSINNER
;
1990 case VARYING_SLOT_TESS_LEVEL_OUTER
:
1991 semantic_name
= TGSI_SEMANTIC_TESSOUTER
;
1994 unreachable("unknown tess level");
1997 return load_tess_level(ctx
, semantic_name
);
2001 static LLVMValueRef
si_load_patch_vertices_in(struct ac_shader_abi
*abi
)
2003 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2004 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
2005 return si_unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 13, 6);
2006 else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
)
2007 return get_num_tcs_out_vertices(ctx
);
2009 unreachable("invalid shader stage for TGSI_SEMANTIC_VERTICESIN");
2012 void si_load_system_value(struct si_shader_context
*ctx
,
2014 const struct tgsi_full_declaration
*decl
)
2016 LLVMValueRef value
= 0;
2018 assert(index
< RADEON_LLVM_MAX_SYSTEM_VALUES
);
2020 switch (decl
->Semantic
.Name
) {
2021 case TGSI_SEMANTIC_INSTANCEID
:
2022 value
= ctx
->abi
.instance_id
;
2025 case TGSI_SEMANTIC_VERTEXID
:
2026 value
= LLVMBuildAdd(ctx
->ac
.builder
,
2028 ctx
->abi
.base_vertex
, "");
2031 case TGSI_SEMANTIC_VERTEXID_NOBASE
:
2032 /* Unused. Clarify the meaning in indexed vs. non-indexed
2033 * draws if this is ever used again. */
2037 case TGSI_SEMANTIC_BASEVERTEX
:
2038 value
= get_base_vertex(&ctx
->abi
);
2041 case TGSI_SEMANTIC_BASEINSTANCE
:
2042 value
= ctx
->abi
.start_instance
;
2045 case TGSI_SEMANTIC_DRAWID
:
2046 value
= ctx
->abi
.draw_id
;
2049 case TGSI_SEMANTIC_INVOCATIONID
:
2050 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
2051 value
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
2052 } else if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
2053 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
2054 value
= LLVMBuildAnd(ctx
->ac
.builder
,
2055 ctx
->abi
.gs_invocation_id
,
2056 LLVMConstInt(ctx
->i32
, 127, 0), "");
2058 value
= ctx
->abi
.gs_invocation_id
;
2061 assert(!"INVOCATIONID not implemented");
2065 case TGSI_SEMANTIC_POSITION
:
2067 LLVMValueRef pos
[4] = {
2068 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
2069 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
2070 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Z_FLOAT
),
2071 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
2072 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_W_FLOAT
)),
2074 value
= ac_build_gather_values(&ctx
->ac
, pos
, 4);
2078 case TGSI_SEMANTIC_FACE
:
2079 value
= ctx
->abi
.front_face
;
2082 case TGSI_SEMANTIC_SAMPLEID
:
2083 value
= si_get_sample_id(ctx
);
2086 case TGSI_SEMANTIC_SAMPLEPOS
: {
2087 LLVMValueRef pos
[4] = {
2088 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
2089 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
2090 LLVMConstReal(ctx
->f32
, 0),
2091 LLVMConstReal(ctx
->f32
, 0)
2093 pos
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2094 pos
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2095 value
= ac_build_gather_values(&ctx
->ac
, pos
, 4);
2099 case TGSI_SEMANTIC_SAMPLEMASK
:
2100 /* This can only occur with the OpenGL Core profile, which
2101 * doesn't support smoothing.
2103 value
= LLVMGetParam(ctx
->main_fn
, SI_PARAM_SAMPLE_COVERAGE
);
2106 case TGSI_SEMANTIC_TESSCOORD
:
2107 value
= si_load_tess_coord(&ctx
->abi
);
2110 case TGSI_SEMANTIC_VERTICESIN
:
2111 value
= si_load_patch_vertices_in(&ctx
->abi
);
2114 case TGSI_SEMANTIC_TESSINNER
:
2115 case TGSI_SEMANTIC_TESSOUTER
:
2116 value
= load_tess_level(ctx
, decl
->Semantic
.Name
);
2119 case TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI
:
2120 case TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
:
2122 LLVMValueRef buf
, slot
, val
[4];
2125 slot
= LLVMConstInt(ctx
->i32
, SI_HS_CONST_DEFAULT_TESS_LEVELS
, 0);
2126 buf
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
2127 buf
= ac_build_load_to_sgpr(&ctx
->ac
, buf
, slot
);
2128 offset
= decl
->Semantic
.Name
== TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
? 4 : 0;
2130 for (i
= 0; i
< 4; i
++)
2131 val
[i
] = buffer_load_const(ctx
, buf
,
2132 LLVMConstInt(ctx
->i32
, (offset
+ i
) * 4, 0));
2133 value
= ac_build_gather_values(&ctx
->ac
, val
, 4);
2137 case TGSI_SEMANTIC_PRIMID
:
2138 value
= si_get_primitive_id(ctx
, 0);
2141 case TGSI_SEMANTIC_GRID_SIZE
:
2142 value
= ctx
->abi
.num_work_groups
;
2145 case TGSI_SEMANTIC_BLOCK_SIZE
:
2146 value
= get_block_size(&ctx
->abi
);
2149 case TGSI_SEMANTIC_BLOCK_ID
:
2151 LLVMValueRef values
[3];
2153 for (int i
= 0; i
< 3; i
++) {
2154 values
[i
] = ctx
->i32_0
;
2155 if (ctx
->abi
.workgroup_ids
[i
]) {
2156 values
[i
] = ctx
->abi
.workgroup_ids
[i
];
2159 value
= ac_build_gather_values(&ctx
->ac
, values
, 3);
2163 case TGSI_SEMANTIC_THREAD_ID
:
2164 value
= ctx
->abi
.local_invocation_ids
;
2167 case TGSI_SEMANTIC_HELPER_INVOCATION
:
2168 value
= ac_build_load_helper_invocation(&ctx
->ac
);
2171 case TGSI_SEMANTIC_SUBGROUP_SIZE
:
2172 value
= LLVMConstInt(ctx
->i32
, ctx
->ac
.wave_size
, 0);
2175 case TGSI_SEMANTIC_SUBGROUP_INVOCATION
:
2176 value
= ac_get_thread_id(&ctx
->ac
);
2179 case TGSI_SEMANTIC_SUBGROUP_EQ_MASK
:
2181 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
2182 if (ctx
->ac
.wave_size
== 64)
2183 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
2184 value
= LLVMBuildShl(ctx
->ac
.builder
,
2185 LLVMConstInt(ctx
->ac
.iN_wavemask
, 1, 0), id
, "");
2186 if (ctx
->ac
.wave_size
== 32)
2187 value
= LLVMBuildZExt(ctx
->ac
.builder
, value
, ctx
->i64
, "");
2188 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
2192 case TGSI_SEMANTIC_SUBGROUP_GE_MASK
:
2193 case TGSI_SEMANTIC_SUBGROUP_GT_MASK
:
2194 case TGSI_SEMANTIC_SUBGROUP_LE_MASK
:
2195 case TGSI_SEMANTIC_SUBGROUP_LT_MASK
:
2197 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
2198 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_GT_MASK
||
2199 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
) {
2200 /* All bits set except LSB */
2201 value
= LLVMConstInt(ctx
->ac
.iN_wavemask
, -2, 0);
2204 value
= LLVMConstInt(ctx
->ac
.iN_wavemask
, -1, 0);
2206 if (ctx
->ac
.wave_size
== 64)
2207 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
2208 value
= LLVMBuildShl(ctx
->ac
.builder
, value
, id
, "");
2209 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
||
2210 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LT_MASK
)
2211 value
= LLVMBuildNot(ctx
->ac
.builder
, value
, "");
2212 if (ctx
->ac
.wave_size
== 32)
2213 value
= LLVMBuildZExt(ctx
->ac
.builder
, value
, ctx
->i64
, "");
2214 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
2218 case TGSI_SEMANTIC_CS_USER_DATA
:
2219 value
= LLVMGetParam(ctx
->main_fn
, ctx
->param_cs_user_data
);
2223 assert(!"unknown system value");
2227 ctx
->system_values
[index
] = value
;
2230 void si_declare_compute_memory(struct si_shader_context
*ctx
)
2232 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2233 unsigned lds_size
= sel
->info
.properties
[TGSI_PROPERTY_CS_LOCAL_SIZE
];
2235 LLVMTypeRef i8p
= LLVMPointerType(ctx
->i8
, AC_ADDR_SPACE_LDS
);
2238 assert(!ctx
->ac
.lds
);
2240 var
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
2241 LLVMArrayType(ctx
->i8
, lds_size
),
2244 LLVMSetAlignment(var
, 64 * 1024);
2246 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, var
, i8p
, "");
2249 void si_tgsi_declare_compute_memory(struct si_shader_context
*ctx
,
2250 const struct tgsi_full_declaration
*decl
)
2252 assert(decl
->Declaration
.MemType
== TGSI_MEMORY_TYPE_SHARED
);
2253 assert(decl
->Range
.First
== decl
->Range
.Last
);
2255 si_declare_compute_memory(ctx
);
2258 static LLVMValueRef
load_const_buffer_desc_fast_path(struct si_shader_context
*ctx
)
2261 LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2262 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2264 /* Do the bounds checking with a descriptor, because
2265 * doing computation and manual bounds checking of 64-bit
2266 * addresses generates horrible VALU code with very high
2267 * VGPR usage and very low SIMD occupancy.
2269 ptr
= LLVMBuildPtrToInt(ctx
->ac
.builder
, ptr
, ctx
->ac
.intptr
, "");
2271 LLVMValueRef desc0
, desc1
;
2273 desc1
= LLVMConstInt(ctx
->i32
,
2274 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
2276 uint32_t rsrc3
= S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
2277 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
2278 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
2279 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
);
2281 if (ctx
->screen
->info
.chip_class
>= GFX10
)
2282 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
2283 S_008F0C_OOB_SELECT(3) |
2284 S_008F0C_RESOURCE_LEVEL(1);
2286 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
2287 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
);
2289 LLVMValueRef desc_elems
[] = {
2292 LLVMConstInt(ctx
->i32
, (sel
->info
.const_file_max
[0] + 1) * 16, 0),
2293 LLVMConstInt(ctx
->i32
, rsrc3
, false)
2296 return ac_build_gather_values(&ctx
->ac
, desc_elems
, 4);
2299 static LLVMValueRef
load_const_buffer_desc(struct si_shader_context
*ctx
, int i
)
2301 LLVMValueRef list_ptr
= LLVMGetParam(ctx
->main_fn
,
2302 ctx
->param_const_and_shader_buffers
);
2304 return ac_build_load_to_sgpr(&ctx
->ac
, list_ptr
,
2305 LLVMConstInt(ctx
->i32
, si_get_constbuf_slot(i
), 0));
2308 static LLVMValueRef
load_ubo(struct ac_shader_abi
*abi
, LLVMValueRef index
)
2310 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2311 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2313 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2315 if (sel
->info
.const_buffers_declared
== 1 &&
2316 sel
->info
.shader_buffers_declared
== 0) {
2317 return load_const_buffer_desc_fast_path(ctx
);
2320 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_const_buffers
);
2321 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
2322 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
2324 return ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
2328 load_ssbo(struct ac_shader_abi
*abi
, LLVMValueRef index
, bool write
)
2330 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2331 LLVMValueRef rsrc_ptr
= LLVMGetParam(ctx
->main_fn
,
2332 ctx
->param_const_and_shader_buffers
);
2334 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_shader_buffers
);
2335 index
= LLVMBuildSub(ctx
->ac
.builder
,
2336 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
- 1, 0),
2339 return ac_build_load_to_sgpr(&ctx
->ac
, rsrc_ptr
, index
);
2342 static LLVMValueRef
fetch_constant(
2343 struct lp_build_tgsi_context
*bld_base
,
2344 const struct tgsi_full_src_register
*reg
,
2345 enum tgsi_opcode_type type
,
2346 unsigned swizzle_in
)
2348 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2349 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2350 const struct tgsi_ind_register
*ireg
= ®
->Indirect
;
2352 unsigned swizzle
= swizzle_in
& 0xffff;
2354 LLVMValueRef addr
, bufp
;
2356 if (swizzle_in
== LP_CHAN_ALL
) {
2358 LLVMValueRef values
[4];
2359 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; ++chan
)
2360 values
[chan
] = fetch_constant(bld_base
, reg
, type
, chan
);
2362 return ac_build_gather_values(&ctx
->ac
, values
, 4);
2365 /* Split 64-bit loads. */
2366 if (tgsi_type_is_64bit(type
)) {
2367 LLVMValueRef lo
, hi
;
2369 lo
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, swizzle
);
2370 hi
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, (swizzle_in
>> 16));
2371 return si_llvm_emit_fetch_64bit(bld_base
, tgsi2llvmtype(bld_base
, type
),
2375 idx
= reg
->Register
.Index
* 4 + swizzle
;
2376 if (reg
->Register
.Indirect
) {
2377 addr
= si_get_indirect_index(ctx
, ireg
, 16, idx
* 4);
2379 addr
= LLVMConstInt(ctx
->i32
, idx
* 4, 0);
2382 /* Fast path when user data SGPRs point to constant buffer 0 directly. */
2383 if (sel
->info
.const_buffers_declared
== 1 &&
2384 sel
->info
.shader_buffers_declared
== 0) {
2385 LLVMValueRef desc
= load_const_buffer_desc_fast_path(ctx
);
2386 LLVMValueRef result
= buffer_load_const(ctx
, desc
, addr
);
2387 return bitcast(bld_base
, type
, result
);
2390 assert(reg
->Register
.Dimension
);
2391 buf
= reg
->Dimension
.Index
;
2393 if (reg
->Dimension
.Indirect
) {
2394 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2396 index
= si_get_bounded_indirect_index(ctx
, ®
->DimIndirect
,
2397 reg
->Dimension
.Index
,
2398 ctx
->num_const_buffers
);
2399 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
2400 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
2401 bufp
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
2403 bufp
= load_const_buffer_desc(ctx
, buf
);
2405 return bitcast(bld_base
, type
, buffer_load_const(ctx
, bufp
, addr
));
2408 /* Initialize arguments for the shader export intrinsic */
2409 static void si_llvm_init_export_args(struct si_shader_context
*ctx
,
2410 LLVMValueRef
*values
,
2412 struct ac_export_args
*args
)
2414 LLVMValueRef f32undef
= LLVMGetUndef(ctx
->ac
.f32
);
2415 unsigned spi_shader_col_format
= V_028714_SPI_SHADER_32_ABGR
;
2417 bool is_int8
, is_int10
;
2419 /* Default is 0xf. Adjusted below depending on the format. */
2420 args
->enabled_channels
= 0xf; /* writemask */
2422 /* Specify whether the EXEC mask represents the valid mask */
2423 args
->valid_mask
= 0;
2425 /* Specify whether this is the last export */
2428 /* Specify the target we are exporting */
2429 args
->target
= target
;
2431 if (ctx
->type
== PIPE_SHADER_FRAGMENT
) {
2432 const struct si_shader_key
*key
= &ctx
->shader
->key
;
2433 unsigned col_formats
= key
->part
.ps
.epilog
.spi_shader_col_format
;
2434 int cbuf
= target
- V_008DFC_SQ_EXP_MRT
;
2436 assert(cbuf
>= 0 && cbuf
< 8);
2437 spi_shader_col_format
= (col_formats
>> (cbuf
* 4)) & 0xf;
2438 is_int8
= (key
->part
.ps
.epilog
.color_is_int8
>> cbuf
) & 0x1;
2439 is_int10
= (key
->part
.ps
.epilog
.color_is_int10
>> cbuf
) & 0x1;
2442 args
->compr
= false;
2443 args
->out
[0] = f32undef
;
2444 args
->out
[1] = f32undef
;
2445 args
->out
[2] = f32undef
;
2446 args
->out
[3] = f32undef
;
2448 LLVMValueRef (*packf
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2]) = NULL
;
2449 LLVMValueRef (*packi
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2],
2450 unsigned bits
, bool hi
) = NULL
;
2452 switch (spi_shader_col_format
) {
2453 case V_028714_SPI_SHADER_ZERO
:
2454 args
->enabled_channels
= 0; /* writemask */
2455 args
->target
= V_008DFC_SQ_EXP_NULL
;
2458 case V_028714_SPI_SHADER_32_R
:
2459 args
->enabled_channels
= 1; /* writemask */
2460 args
->out
[0] = values
[0];
2463 case V_028714_SPI_SHADER_32_GR
:
2464 args
->enabled_channels
= 0x3; /* writemask */
2465 args
->out
[0] = values
[0];
2466 args
->out
[1] = values
[1];
2469 case V_028714_SPI_SHADER_32_AR
:
2470 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
2471 args
->enabled_channels
= 0x3; /* writemask */
2472 args
->out
[0] = values
[0];
2473 args
->out
[1] = values
[3];
2475 args
->enabled_channels
= 0x9; /* writemask */
2476 args
->out
[0] = values
[0];
2477 args
->out
[3] = values
[3];
2481 case V_028714_SPI_SHADER_FP16_ABGR
:
2482 packf
= ac_build_cvt_pkrtz_f16
;
2485 case V_028714_SPI_SHADER_UNORM16_ABGR
:
2486 packf
= ac_build_cvt_pknorm_u16
;
2489 case V_028714_SPI_SHADER_SNORM16_ABGR
:
2490 packf
= ac_build_cvt_pknorm_i16
;
2493 case V_028714_SPI_SHADER_UINT16_ABGR
:
2494 packi
= ac_build_cvt_pk_u16
;
2497 case V_028714_SPI_SHADER_SINT16_ABGR
:
2498 packi
= ac_build_cvt_pk_i16
;
2501 case V_028714_SPI_SHADER_32_ABGR
:
2502 memcpy(&args
->out
[0], values
, sizeof(values
[0]) * 4);
2506 /* Pack f16 or norm_i16/u16. */
2508 for (chan
= 0; chan
< 2; chan
++) {
2509 LLVMValueRef pack_args
[2] = {
2511 values
[2 * chan
+ 1]
2513 LLVMValueRef packed
;
2515 packed
= packf(&ctx
->ac
, pack_args
);
2516 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
2518 args
->compr
= 1; /* COMPR flag */
2522 for (chan
= 0; chan
< 2; chan
++) {
2523 LLVMValueRef pack_args
[2] = {
2524 ac_to_integer(&ctx
->ac
, values
[2 * chan
]),
2525 ac_to_integer(&ctx
->ac
, values
[2 * chan
+ 1])
2527 LLVMValueRef packed
;
2529 packed
= packi(&ctx
->ac
, pack_args
,
2530 is_int8
? 8 : is_int10
? 10 : 16,
2532 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
2534 args
->compr
= 1; /* COMPR flag */
2538 static void si_alpha_test(struct lp_build_tgsi_context
*bld_base
,
2541 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2543 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_NEVER
) {
2544 static LLVMRealPredicate cond_map
[PIPE_FUNC_ALWAYS
+ 1] = {
2545 [PIPE_FUNC_LESS
] = LLVMRealOLT
,
2546 [PIPE_FUNC_EQUAL
] = LLVMRealOEQ
,
2547 [PIPE_FUNC_LEQUAL
] = LLVMRealOLE
,
2548 [PIPE_FUNC_GREATER
] = LLVMRealOGT
,
2549 [PIPE_FUNC_NOTEQUAL
] = LLVMRealONE
,
2550 [PIPE_FUNC_GEQUAL
] = LLVMRealOGE
,
2552 LLVMRealPredicate cond
= cond_map
[ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
];
2555 LLVMValueRef alpha_ref
= LLVMGetParam(ctx
->main_fn
,
2556 SI_PARAM_ALPHA_REF
);
2557 LLVMValueRef alpha_pass
=
2558 LLVMBuildFCmp(ctx
->ac
.builder
, cond
, alpha
, alpha_ref
, "");
2559 ac_build_kill_if_false(&ctx
->ac
, alpha_pass
);
2561 ac_build_kill_if_false(&ctx
->ac
, ctx
->i1false
);
2565 static LLVMValueRef
si_scale_alpha_by_sample_mask(struct lp_build_tgsi_context
*bld_base
,
2567 unsigned samplemask_param
)
2569 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2570 LLVMValueRef coverage
;
2572 /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
2573 coverage
= LLVMGetParam(ctx
->main_fn
,
2575 coverage
= ac_to_integer(&ctx
->ac
, coverage
);
2577 coverage
= ac_build_intrinsic(&ctx
->ac
, "llvm.ctpop.i32",
2579 &coverage
, 1, AC_FUNC_ATTR_READNONE
);
2581 coverage
= LLVMBuildUIToFP(ctx
->ac
.builder
, coverage
,
2584 coverage
= LLVMBuildFMul(ctx
->ac
.builder
, coverage
,
2585 LLVMConstReal(ctx
->f32
,
2586 1.0 / SI_NUM_SMOOTH_AA_SAMPLES
), "");
2588 return LLVMBuildFMul(ctx
->ac
.builder
, alpha
, coverage
, "");
2591 static void si_llvm_emit_clipvertex(struct si_shader_context
*ctx
,
2592 struct ac_export_args
*pos
, LLVMValueRef
*out_elts
)
2596 unsigned const_chan
;
2597 LLVMValueRef base_elt
;
2598 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
2599 LLVMValueRef constbuf_index
= LLVMConstInt(ctx
->i32
,
2600 SI_VS_CONST_CLIP_PLANES
, 0);
2601 LLVMValueRef const_resource
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, constbuf_index
);
2603 for (reg_index
= 0; reg_index
< 2; reg_index
++) {
2604 struct ac_export_args
*args
= &pos
[2 + reg_index
];
2609 args
->out
[3] = LLVMConstReal(ctx
->f32
, 0.0f
);
2611 /* Compute dot products of position and user clip plane vectors */
2612 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
2613 for (const_chan
= 0; const_chan
< TGSI_NUM_CHANNELS
; const_chan
++) {
2615 LLVMConstInt(ctx
->i32
, ((reg_index
* 4 + chan
) * 4 +
2616 const_chan
) * 4, 0);
2617 base_elt
= buffer_load_const(ctx
, const_resource
,
2619 args
->out
[chan
] = ac_build_fmad(&ctx
->ac
, base_elt
,
2620 out_elts
[const_chan
], args
->out
[chan
]);
2624 args
->enabled_channels
= 0xf;
2625 args
->valid_mask
= 0;
2627 args
->target
= V_008DFC_SQ_EXP_POS
+ 2 + reg_index
;
2632 static void si_dump_streamout(struct pipe_stream_output_info
*so
)
2636 if (so
->num_outputs
)
2637 fprintf(stderr
, "STREAMOUT\n");
2639 for (i
= 0; i
< so
->num_outputs
; i
++) {
2640 unsigned mask
= ((1 << so
->output
[i
].num_components
) - 1) <<
2641 so
->output
[i
].start_component
;
2642 fprintf(stderr
, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n",
2643 i
, so
->output
[i
].output_buffer
,
2644 so
->output
[i
].dst_offset
, so
->output
[i
].dst_offset
+ so
->output
[i
].num_components
- 1,
2645 so
->output
[i
].register_index
,
2646 mask
& 1 ? "x" : "",
2647 mask
& 2 ? "y" : "",
2648 mask
& 4 ? "z" : "",
2649 mask
& 8 ? "w" : "");
2653 void si_emit_streamout_output(struct si_shader_context
*ctx
,
2654 LLVMValueRef
const *so_buffers
,
2655 LLVMValueRef
const *so_write_offsets
,
2656 struct pipe_stream_output
*stream_out
,
2657 struct si_shader_output_values
*shader_out
)
2659 unsigned buf_idx
= stream_out
->output_buffer
;
2660 unsigned start
= stream_out
->start_component
;
2661 unsigned num_comps
= stream_out
->num_components
;
2662 LLVMValueRef out
[4];
2664 assert(num_comps
&& num_comps
<= 4);
2665 if (!num_comps
|| num_comps
> 4)
2668 /* Load the output as int. */
2669 for (int j
= 0; j
< num_comps
; j
++) {
2670 assert(stream_out
->stream
== shader_out
->vertex_stream
[start
+ j
]);
2672 out
[j
] = ac_to_integer(&ctx
->ac
, shader_out
->values
[start
+ j
]);
2675 /* Pack the output. */
2676 LLVMValueRef vdata
= NULL
;
2678 switch (num_comps
) {
2679 case 1: /* as i32 */
2682 case 2: /* as v2i32 */
2683 case 3: /* as v3i32 */
2684 if (ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false)) {
2685 vdata
= ac_build_gather_values(&ctx
->ac
, out
, num_comps
);
2688 /* as v4i32 (aligned to 4) */
2689 out
[3] = LLVMGetUndef(ctx
->i32
);
2691 case 4: /* as v4i32 */
2692 vdata
= ac_build_gather_values(&ctx
->ac
, out
, util_next_power_of_two(num_comps
));
2696 ac_build_buffer_store_dword(&ctx
->ac
, so_buffers
[buf_idx
],
2698 so_write_offsets
[buf_idx
],
2700 stream_out
->dst_offset
* 4, ac_glc
| ac_slc
, false);
2704 * Write streamout data to buffers for vertex stream @p stream (different
2705 * vertex streams can occur for GS copy shaders).
2707 static void si_llvm_emit_streamout(struct si_shader_context
*ctx
,
2708 struct si_shader_output_values
*outputs
,
2709 unsigned noutput
, unsigned stream
)
2711 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2712 struct pipe_stream_output_info
*so
= &sel
->so
;
2713 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2716 /* Get bits [22:16], i.e. (so_param >> 16) & 127; */
2717 LLVMValueRef so_vtx_count
=
2718 si_unpack_param(ctx
, ctx
->param_streamout_config
, 16, 7);
2720 LLVMValueRef tid
= ac_get_thread_id(&ctx
->ac
);
2722 /* can_emit = tid < so_vtx_count; */
2723 LLVMValueRef can_emit
=
2724 LLVMBuildICmp(builder
, LLVMIntULT
, tid
, so_vtx_count
, "");
2726 /* Emit the streamout code conditionally. This actually avoids
2727 * out-of-bounds buffer access. The hw tells us via the SGPR
2728 * (so_vtx_count) which threads are allowed to emit streamout data. */
2729 ac_build_ifcc(&ctx
->ac
, can_emit
, 6501);
2731 /* The buffer offset is computed as follows:
2732 * ByteOffset = streamout_offset[buffer_id]*4 +
2733 * (streamout_write_index + thread_id)*stride[buffer_id] +
2737 LLVMValueRef so_write_index
=
2738 LLVMGetParam(ctx
->main_fn
,
2739 ctx
->param_streamout_write_index
);
2741 /* Compute (streamout_write_index + thread_id). */
2742 so_write_index
= LLVMBuildAdd(builder
, so_write_index
, tid
, "");
2744 /* Load the descriptor and compute the write offset for each
2745 * enabled buffer. */
2746 LLVMValueRef so_write_offset
[4] = {};
2747 LLVMValueRef so_buffers
[4];
2748 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
2749 ctx
->param_rw_buffers
);
2751 for (i
= 0; i
< 4; i
++) {
2755 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
,
2756 SI_VS_STREAMOUT_BUF0
+ i
, 0);
2758 so_buffers
[i
] = ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
2760 LLVMValueRef so_offset
= LLVMGetParam(ctx
->main_fn
,
2761 ctx
->param_streamout_offset
[i
]);
2762 so_offset
= LLVMBuildMul(builder
, so_offset
, LLVMConstInt(ctx
->i32
, 4, 0), "");
2764 so_write_offset
[i
] = ac_build_imad(&ctx
->ac
, so_write_index
,
2765 LLVMConstInt(ctx
->i32
, so
->stride
[i
]*4, 0),
2769 /* Write streamout data. */
2770 for (i
= 0; i
< so
->num_outputs
; i
++) {
2771 unsigned reg
= so
->output
[i
].register_index
;
2776 if (stream
!= so
->output
[i
].stream
)
2779 si_emit_streamout_output(ctx
, so_buffers
, so_write_offset
,
2780 &so
->output
[i
], &outputs
[reg
]);
2783 ac_build_endif(&ctx
->ac
, 6501);
2786 static void si_export_param(struct si_shader_context
*ctx
, unsigned index
,
2787 LLVMValueRef
*values
)
2789 struct ac_export_args args
;
2791 si_llvm_init_export_args(ctx
, values
,
2792 V_008DFC_SQ_EXP_PARAM
+ index
, &args
);
2793 ac_build_export(&ctx
->ac
, &args
);
2796 static void si_build_param_exports(struct si_shader_context
*ctx
,
2797 struct si_shader_output_values
*outputs
,
2800 struct si_shader
*shader
= ctx
->shader
;
2801 unsigned param_count
= 0;
2803 for (unsigned i
= 0; i
< noutput
; i
++) {
2804 unsigned semantic_name
= outputs
[i
].semantic_name
;
2805 unsigned semantic_index
= outputs
[i
].semantic_index
;
2807 if (outputs
[i
].vertex_stream
[0] != 0 &&
2808 outputs
[i
].vertex_stream
[1] != 0 &&
2809 outputs
[i
].vertex_stream
[2] != 0 &&
2810 outputs
[i
].vertex_stream
[3] != 0)
2813 switch (semantic_name
) {
2814 case TGSI_SEMANTIC_LAYER
:
2815 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2816 case TGSI_SEMANTIC_CLIPDIST
:
2817 case TGSI_SEMANTIC_COLOR
:
2818 case TGSI_SEMANTIC_BCOLOR
:
2819 case TGSI_SEMANTIC_PRIMID
:
2820 case TGSI_SEMANTIC_FOG
:
2821 case TGSI_SEMANTIC_TEXCOORD
:
2822 case TGSI_SEMANTIC_GENERIC
:
2828 if ((semantic_name
!= TGSI_SEMANTIC_GENERIC
||
2829 semantic_index
< SI_MAX_IO_GENERIC
) &&
2830 shader
->key
.opt
.kill_outputs
&
2831 (1ull << si_shader_io_get_unique_index(semantic_name
,
2832 semantic_index
, true)))
2835 si_export_param(ctx
, param_count
, outputs
[i
].values
);
2837 assert(i
< ARRAY_SIZE(shader
->info
.vs_output_param_offset
));
2838 shader
->info
.vs_output_param_offset
[i
] = param_count
++;
2841 shader
->info
.nr_param_exports
= param_count
;
2845 * Vertex color clamping.
2847 * This uses a state constant loaded in a user data SGPR and
2848 * an IF statement is added that clamps all colors if the constant
2851 static void si_vertex_color_clamping(struct si_shader_context
*ctx
,
2852 struct si_shader_output_values
*outputs
,
2855 LLVMValueRef addr
[SI_MAX_VS_OUTPUTS
][4];
2856 bool has_colors
= false;
2858 /* Store original colors to alloca variables. */
2859 for (unsigned i
= 0; i
< noutput
; i
++) {
2860 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2861 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2864 for (unsigned j
= 0; j
< 4; j
++) {
2865 addr
[i
][j
] = ac_build_alloca_undef(&ctx
->ac
, ctx
->f32
, "");
2866 LLVMBuildStore(ctx
->ac
.builder
, outputs
[i
].values
[j
], addr
[i
][j
]);
2874 /* The state is in the first bit of the user SGPR. */
2875 LLVMValueRef cond
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vs_state_bits
);
2876 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->i1
, "");
2878 ac_build_ifcc(&ctx
->ac
, cond
, 6502);
2880 /* Store clamped colors to alloca variables within the conditional block. */
2881 for (unsigned i
= 0; i
< noutput
; i
++) {
2882 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2883 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2886 for (unsigned j
= 0; j
< 4; j
++) {
2887 LLVMBuildStore(ctx
->ac
.builder
,
2888 ac_build_clamp(&ctx
->ac
, outputs
[i
].values
[j
]),
2892 ac_build_endif(&ctx
->ac
, 6502);
2894 /* Load clamped colors */
2895 for (unsigned i
= 0; i
< noutput
; i
++) {
2896 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2897 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2900 for (unsigned j
= 0; j
< 4; j
++) {
2901 outputs
[i
].values
[j
] =
2902 LLVMBuildLoad(ctx
->ac
.builder
, addr
[i
][j
], "");
2907 /* Generate export instructions for hardware VS shader stage or NGG GS stage
2908 * (position and parameter data only).
2910 void si_llvm_export_vs(struct si_shader_context
*ctx
,
2911 struct si_shader_output_values
*outputs
,
2914 struct si_shader
*shader
= ctx
->shader
;
2915 struct ac_export_args pos_args
[4] = {};
2916 LLVMValueRef psize_value
= NULL
, edgeflag_value
= NULL
, layer_value
= NULL
, viewport_index_value
= NULL
;
2920 si_vertex_color_clamping(ctx
, outputs
, noutput
);
2922 /* Build position exports. */
2923 for (i
= 0; i
< noutput
; i
++) {
2924 switch (outputs
[i
].semantic_name
) {
2925 case TGSI_SEMANTIC_POSITION
:
2926 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2927 V_008DFC_SQ_EXP_POS
, &pos_args
[0]);
2929 case TGSI_SEMANTIC_PSIZE
:
2930 psize_value
= outputs
[i
].values
[0];
2932 case TGSI_SEMANTIC_LAYER
:
2933 layer_value
= outputs
[i
].values
[0];
2935 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2936 viewport_index_value
= outputs
[i
].values
[0];
2938 case TGSI_SEMANTIC_EDGEFLAG
:
2939 edgeflag_value
= outputs
[i
].values
[0];
2941 case TGSI_SEMANTIC_CLIPDIST
:
2942 if (!shader
->key
.opt
.clip_disable
) {
2943 unsigned index
= 2 + outputs
[i
].semantic_index
;
2944 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2945 V_008DFC_SQ_EXP_POS
+ index
,
2949 case TGSI_SEMANTIC_CLIPVERTEX
:
2950 if (!shader
->key
.opt
.clip_disable
) {
2951 si_llvm_emit_clipvertex(ctx
, pos_args
,
2958 /* We need to add the position output manually if it's missing. */
2959 if (!pos_args
[0].out
[0]) {
2960 pos_args
[0].enabled_channels
= 0xf; /* writemask */
2961 pos_args
[0].valid_mask
= 0; /* EXEC mask */
2962 pos_args
[0].done
= 0; /* last export? */
2963 pos_args
[0].target
= V_008DFC_SQ_EXP_POS
;
2964 pos_args
[0].compr
= 0; /* COMPR flag */
2965 pos_args
[0].out
[0] = ctx
->ac
.f32_0
; /* X */
2966 pos_args
[0].out
[1] = ctx
->ac
.f32_0
; /* Y */
2967 pos_args
[0].out
[2] = ctx
->ac
.f32_0
; /* Z */
2968 pos_args
[0].out
[3] = ctx
->ac
.f32_1
; /* W */
2971 /* Write the misc vector (point size, edgeflag, layer, viewport). */
2972 if (shader
->selector
->info
.writes_psize
||
2973 shader
->selector
->pos_writes_edgeflag
||
2974 shader
->selector
->info
.writes_viewport_index
||
2975 shader
->selector
->info
.writes_layer
) {
2976 pos_args
[1].enabled_channels
= shader
->selector
->info
.writes_psize
|
2977 (shader
->selector
->pos_writes_edgeflag
<< 1) |
2978 (shader
->selector
->info
.writes_layer
<< 2);
2980 pos_args
[1].valid_mask
= 0; /* EXEC mask */
2981 pos_args
[1].done
= 0; /* last export? */
2982 pos_args
[1].target
= V_008DFC_SQ_EXP_POS
+ 1;
2983 pos_args
[1].compr
= 0; /* COMPR flag */
2984 pos_args
[1].out
[0] = ctx
->ac
.f32_0
; /* X */
2985 pos_args
[1].out
[1] = ctx
->ac
.f32_0
; /* Y */
2986 pos_args
[1].out
[2] = ctx
->ac
.f32_0
; /* Z */
2987 pos_args
[1].out
[3] = ctx
->ac
.f32_0
; /* W */
2989 if (shader
->selector
->info
.writes_psize
)
2990 pos_args
[1].out
[0] = psize_value
;
2992 if (shader
->selector
->pos_writes_edgeflag
) {
2993 /* The output is a float, but the hw expects an integer
2994 * with the first bit containing the edge flag. */
2995 edgeflag_value
= LLVMBuildFPToUI(ctx
->ac
.builder
,
2998 edgeflag_value
= ac_build_umin(&ctx
->ac
,
3002 /* The LLVM intrinsic expects a float. */
3003 pos_args
[1].out
[1] = ac_to_float(&ctx
->ac
, edgeflag_value
);
3006 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3007 /* GFX9 has the layer in out.z[10:0] and the viewport
3008 * index in out.z[19:16].
3010 if (shader
->selector
->info
.writes_layer
)
3011 pos_args
[1].out
[2] = layer_value
;
3013 if (shader
->selector
->info
.writes_viewport_index
) {
3014 LLVMValueRef v
= viewport_index_value
;
3016 v
= ac_to_integer(&ctx
->ac
, v
);
3017 v
= LLVMBuildShl(ctx
->ac
.builder
, v
,
3018 LLVMConstInt(ctx
->i32
, 16, 0), "");
3019 v
= LLVMBuildOr(ctx
->ac
.builder
, v
,
3020 ac_to_integer(&ctx
->ac
, pos_args
[1].out
[2]), "");
3021 pos_args
[1].out
[2] = ac_to_float(&ctx
->ac
, v
);
3022 pos_args
[1].enabled_channels
|= 1 << 2;
3025 if (shader
->selector
->info
.writes_layer
)
3026 pos_args
[1].out
[2] = layer_value
;
3028 if (shader
->selector
->info
.writes_viewport_index
) {
3029 pos_args
[1].out
[3] = viewport_index_value
;
3030 pos_args
[1].enabled_channels
|= 1 << 3;
3035 for (i
= 0; i
< 4; i
++)
3036 if (pos_args
[i
].out
[0])
3037 shader
->info
.nr_pos_exports
++;
3039 /* Navi10-14 skip POS0 exports if EXEC=0 and DONE=0, causing a hang.
3040 * Setting valid_mask=1 prevents it and has no other effect.
3042 if (ctx
->screen
->info
.family
== CHIP_NAVI10
||
3043 ctx
->screen
->info
.family
== CHIP_NAVI12
||
3044 ctx
->screen
->info
.family
== CHIP_NAVI14
)
3045 pos_args
[0].valid_mask
= 1;
3048 for (i
= 0; i
< 4; i
++) {
3049 if (!pos_args
[i
].out
[0])
3052 /* Specify the target we are exporting */
3053 pos_args
[i
].target
= V_008DFC_SQ_EXP_POS
+ pos_idx
++;
3055 if (pos_idx
== shader
->info
.nr_pos_exports
)
3056 /* Specify that this is the last export */
3057 pos_args
[i
].done
= 1;
3059 ac_build_export(&ctx
->ac
, &pos_args
[i
]);
3062 /* Build parameter exports. */
3063 si_build_param_exports(ctx
, outputs
, noutput
);
3067 * Forward all outputs from the vertex shader to the TES. This is only used
3068 * for the fixed function TCS.
3070 static void si_copy_tcs_inputs(struct lp_build_tgsi_context
*bld_base
)
3072 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3073 LLVMValueRef invocation_id
, buffer
, buffer_offset
;
3074 LLVMValueRef lds_vertex_stride
, lds_base
;
3077 invocation_id
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
3078 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
3079 buffer_offset
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
3081 lds_vertex_stride
= get_tcs_in_vertex_dw_stride(ctx
);
3082 lds_base
= get_tcs_in_current_patch_offset(ctx
);
3083 lds_base
= ac_build_imad(&ctx
->ac
, invocation_id
, lds_vertex_stride
,
3086 inputs
= ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
;
3088 unsigned i
= u_bit_scan64(&inputs
);
3090 LLVMValueRef lds_ptr
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3091 LLVMConstInt(ctx
->i32
, 4 * i
, 0),
3094 LLVMValueRef buffer_addr
= get_tcs_tes_buffer_address(ctx
,
3095 get_rel_patch_id(ctx
),
3097 LLVMConstInt(ctx
->i32
, i
, 0));
3099 LLVMValueRef value
= lshs_lds_load(bld_base
, ctx
->ac
.i32
, ~0, lds_ptr
);
3101 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buffer_addr
,
3102 buffer_offset
, 0, ac_glc
, false);
3106 static void si_write_tess_factors(struct lp_build_tgsi_context
*bld_base
,
3107 LLVMValueRef rel_patch_id
,
3108 LLVMValueRef invocation_id
,
3109 LLVMValueRef tcs_out_current_patch_data_offset
,
3110 LLVMValueRef invoc0_tf_outer
[4],
3111 LLVMValueRef invoc0_tf_inner
[2])
3113 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3114 struct si_shader
*shader
= ctx
->shader
;
3115 unsigned tess_inner_index
, tess_outer_index
;
3116 LLVMValueRef lds_base
, lds_inner
, lds_outer
, byteoffset
, buffer
;
3117 LLVMValueRef out
[6], vec0
, vec1
, tf_base
, inner
[4], outer
[4];
3118 unsigned stride
, outer_comps
, inner_comps
, i
, offset
;
3120 /* Add a barrier before loading tess factors from LDS. */
3121 if (!shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
)
3122 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
3124 /* Do this only for invocation 0, because the tess levels are per-patch,
3127 * This can't jump, because invocation 0 executes this. It should
3128 * at least mask out the loads and stores for other invocations.
3130 ac_build_ifcc(&ctx
->ac
,
3131 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3132 invocation_id
, ctx
->i32_0
, ""), 6503);
3134 /* Determine the layout of one tess factor element in the buffer. */
3135 switch (shader
->key
.part
.tcs
.epilog
.prim_mode
) {
3136 case PIPE_PRIM_LINES
:
3137 stride
= 2; /* 2 dwords, 1 vec2 store */
3141 case PIPE_PRIM_TRIANGLES
:
3142 stride
= 4; /* 4 dwords, 1 vec4 store */
3146 case PIPE_PRIM_QUADS
:
3147 stride
= 6; /* 6 dwords, 2 stores (vec4 + vec2) */
3156 for (i
= 0; i
< 4; i
++) {
3157 inner
[i
] = LLVMGetUndef(ctx
->i32
);
3158 outer
[i
] = LLVMGetUndef(ctx
->i32
);
3161 if (shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
) {
3162 /* Tess factors are in VGPRs. */
3163 for (i
= 0; i
< outer_comps
; i
++)
3164 outer
[i
] = out
[i
] = invoc0_tf_outer
[i
];
3165 for (i
= 0; i
< inner_comps
; i
++)
3166 inner
[i
] = out
[outer_comps
+i
] = invoc0_tf_inner
[i
];
3168 /* Load tess_inner and tess_outer from LDS.
3169 * Any invocation can write them, so we can't get them from a temporary.
3171 tess_inner_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSINNER
, 0);
3172 tess_outer_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSOUTER
, 0);
3174 lds_base
= tcs_out_current_patch_data_offset
;
3175 lds_inner
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3176 LLVMConstInt(ctx
->i32
,
3177 tess_inner_index
* 4, 0), "");
3178 lds_outer
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3179 LLVMConstInt(ctx
->i32
,
3180 tess_outer_index
* 4, 0), "");
3182 for (i
= 0; i
< outer_comps
; i
++) {
3184 lshs_lds_load(bld_base
, ctx
->ac
.i32
, i
, lds_outer
);
3186 for (i
= 0; i
< inner_comps
; i
++) {
3187 inner
[i
] = out
[outer_comps
+i
] =
3188 lshs_lds_load(bld_base
, ctx
->ac
.i32
, i
, lds_inner
);
3192 if (shader
->key
.part
.tcs
.epilog
.prim_mode
== PIPE_PRIM_LINES
) {
3193 /* For isolines, the hardware expects tess factors in the
3194 * reverse order from what GLSL / TGSI specify.
3196 LLVMValueRef tmp
= out
[0];
3201 /* Convert the outputs to vectors for stores. */
3202 vec0
= ac_build_gather_values(&ctx
->ac
, out
, MIN2(stride
, 4));
3206 vec1
= ac_build_gather_values(&ctx
->ac
, out
+4, stride
- 4);
3208 /* Get the buffer. */
3209 buffer
= get_tess_ring_descriptor(ctx
, TCS_FACTOR_RING
);
3211 /* Get the offset. */
3212 tf_base
= LLVMGetParam(ctx
->main_fn
,
3213 ctx
->param_tcs_factor_offset
);
3214 byteoffset
= LLVMBuildMul(ctx
->ac
.builder
, rel_patch_id
,
3215 LLVMConstInt(ctx
->i32
, 4 * stride
, 0), "");
3217 ac_build_ifcc(&ctx
->ac
,
3218 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3219 rel_patch_id
, ctx
->i32_0
, ""), 6504);
3221 /* Store the dynamic HS control word. */
3223 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
3224 ac_build_buffer_store_dword(&ctx
->ac
, buffer
,
3225 LLVMConstInt(ctx
->i32
, 0x80000000, 0),
3226 1, ctx
->i32_0
, tf_base
,
3227 offset
, ac_glc
, false);
3231 ac_build_endif(&ctx
->ac
, 6504);
3233 /* Store the tessellation factors. */
3234 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec0
,
3235 MIN2(stride
, 4), byteoffset
, tf_base
,
3236 offset
, ac_glc
, false);
3239 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec1
,
3240 stride
- 4, byteoffset
, tf_base
,
3241 offset
, ac_glc
, false);
3243 /* Store the tess factors into the offchip buffer if TES reads them. */
3244 if (shader
->key
.part
.tcs
.epilog
.tes_reads_tess_factors
) {
3245 LLVMValueRef buf
, base
, inner_vec
, outer_vec
, tf_outer_offset
;
3246 LLVMValueRef tf_inner_offset
;
3247 unsigned param_outer
, param_inner
;
3249 buf
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
3250 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
3252 param_outer
= si_shader_io_get_unique_index_patch(
3253 TGSI_SEMANTIC_TESSOUTER
, 0);
3254 tf_outer_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
3255 LLVMConstInt(ctx
->i32
, param_outer
, 0));
3257 unsigned outer_vec_size
=
3258 ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false) ?
3259 outer_comps
: util_next_power_of_two(outer_comps
);
3260 outer_vec
= ac_build_gather_values(&ctx
->ac
, outer
, outer_vec_size
);
3262 ac_build_buffer_store_dword(&ctx
->ac
, buf
, outer_vec
,
3263 outer_comps
, tf_outer_offset
,
3264 base
, 0, ac_glc
, false);
3266 param_inner
= si_shader_io_get_unique_index_patch(
3267 TGSI_SEMANTIC_TESSINNER
, 0);
3268 tf_inner_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
3269 LLVMConstInt(ctx
->i32
, param_inner
, 0));
3271 inner_vec
= inner_comps
== 1 ? inner
[0] :
3272 ac_build_gather_values(&ctx
->ac
, inner
, inner_comps
);
3273 ac_build_buffer_store_dword(&ctx
->ac
, buf
, inner_vec
,
3274 inner_comps
, tf_inner_offset
,
3275 base
, 0, ac_glc
, false);
3279 ac_build_endif(&ctx
->ac
, 6503);
3283 si_insert_input_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3284 unsigned param
, unsigned return_index
)
3286 return LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3287 LLVMGetParam(ctx
->main_fn
, param
),
3292 si_insert_input_ret_float(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3293 unsigned param
, unsigned return_index
)
3295 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3296 LLVMValueRef p
= LLVMGetParam(ctx
->main_fn
, param
);
3298 return LLVMBuildInsertValue(builder
, ret
,
3299 ac_to_float(&ctx
->ac
, p
),
3304 si_insert_input_ptr(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3305 unsigned param
, unsigned return_index
)
3307 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3308 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, param
);
3309 ptr
= LLVMBuildPtrToInt(builder
, ptr
, ctx
->i32
, "");
3310 return LLVMBuildInsertValue(builder
, ret
, ptr
, return_index
, "");
3313 /* This only writes the tessellation factor levels. */
3314 static void si_llvm_emit_tcs_epilogue(struct ac_shader_abi
*abi
,
3315 unsigned max_outputs
,
3316 LLVMValueRef
*addrs
)
3318 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3319 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
3320 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3321 LLVMValueRef rel_patch_id
, invocation_id
, tf_lds_offset
;
3323 si_copy_tcs_inputs(bld_base
);
3325 rel_patch_id
= get_rel_patch_id(ctx
);
3326 invocation_id
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
3327 tf_lds_offset
= get_tcs_out_current_patch_data_offset(ctx
);
3329 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3330 LLVMBasicBlockRef blocks
[2] = {
3331 LLVMGetInsertBlock(builder
),
3332 ctx
->merged_wrap_if_entry_block
3334 LLVMValueRef values
[2];
3336 ac_build_endif(&ctx
->ac
, ctx
->merged_wrap_if_label
);
3338 values
[0] = rel_patch_id
;
3339 values
[1] = LLVMGetUndef(ctx
->i32
);
3340 rel_patch_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3342 values
[0] = tf_lds_offset
;
3343 values
[1] = LLVMGetUndef(ctx
->i32
);
3344 tf_lds_offset
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3346 values
[0] = invocation_id
;
3347 values
[1] = ctx
->i32_1
; /* cause the epilog to skip threads */
3348 invocation_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3351 /* Return epilog parameters from this function. */
3352 LLVMValueRef ret
= ctx
->return_value
;
3355 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3356 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3357 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3358 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3359 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
3360 /* Tess offchip and tess factor offsets are at the beginning. */
3361 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3362 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3363 vgpr
= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
+ 1;
3365 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3366 GFX6_SGPR_TCS_OFFCHIP_LAYOUT
);
3367 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3368 GFX6_SGPR_TCS_OUT_LAYOUT
);
3369 /* Tess offchip and tess factor offsets are after user SGPRs. */
3370 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
,
3371 GFX6_TCS_NUM_USER_SGPR
);
3372 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
,
3373 GFX6_TCS_NUM_USER_SGPR
+ 1);
3374 vgpr
= GFX6_TCS_NUM_USER_SGPR
+ 2;
3378 rel_patch_id
= ac_to_float(&ctx
->ac
, rel_patch_id
);
3379 invocation_id
= ac_to_float(&ctx
->ac
, invocation_id
);
3380 tf_lds_offset
= ac_to_float(&ctx
->ac
, tf_lds_offset
);
3382 /* Leave a hole corresponding to the two input VGPRs. This ensures that
3383 * the invocation_id output does not alias the tcs_rel_ids input,
3384 * which saves a V_MOV on gfx9.
3388 ret
= LLVMBuildInsertValue(builder
, ret
, rel_patch_id
, vgpr
++, "");
3389 ret
= LLVMBuildInsertValue(builder
, ret
, invocation_id
, vgpr
++, "");
3391 if (ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
3392 vgpr
++; /* skip the tess factor LDS offset */
3393 for (unsigned i
= 0; i
< 6; i
++) {
3394 LLVMValueRef value
=
3395 LLVMBuildLoad(builder
, ctx
->invoc0_tess_factors
[i
], "");
3396 value
= ac_to_float(&ctx
->ac
, value
);
3397 ret
= LLVMBuildInsertValue(builder
, ret
, value
, vgpr
++, "");
3400 ret
= LLVMBuildInsertValue(builder
, ret
, tf_lds_offset
, vgpr
++, "");
3402 ctx
->return_value
= ret
;
3405 /* Pass TCS inputs from LS to TCS on GFX9. */
3406 static void si_set_ls_return_value_for_tcs(struct si_shader_context
*ctx
)
3408 LLVMValueRef ret
= ctx
->return_value
;
3410 ret
= si_insert_input_ptr(ctx
, ret
, 0, 0);
3411 ret
= si_insert_input_ptr(ctx
, ret
, 1, 1);
3412 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3413 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3414 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3415 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3417 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->param_rw_buffers
,
3418 8 + SI_SGPR_RW_BUFFERS
);
3419 ret
= si_insert_input_ptr(ctx
, ret
,
3420 ctx
->param_bindless_samplers_and_images
,
3421 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3423 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_vs_state_bits
,
3424 8 + SI_SGPR_VS_STATE_BITS
);
3426 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3427 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3428 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_offsets
,
3429 8 + GFX9_SGPR_TCS_OUT_OFFSETS
);
3430 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3431 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
3433 unsigned vgpr
= 8 + GFX9_TCS_NUM_USER_SGPR
;
3434 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3435 ac_to_float(&ctx
->ac
, ctx
->abi
.tcs_patch_id
),
3437 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3438 ac_to_float(&ctx
->ac
, ctx
->abi
.tcs_rel_ids
),
3440 ctx
->return_value
= ret
;
3443 /* Pass GS inputs from ES to GS on GFX9. */
3444 static void si_set_es_return_value_for_gs(struct si_shader_context
*ctx
)
3446 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3447 LLVMValueRef ret
= ctx
->return_value
;
3449 ret
= si_insert_input_ptr(ctx
, ret
, 0, 0);
3450 ret
= si_insert_input_ptr(ctx
, ret
, 1, 1);
3451 if (ctx
->shader
->key
.as_ngg
)
3452 ret
= LLVMBuildInsertValue(builder
, ret
, ctx
->gs_tg_info
, 2, "");
3454 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_gs2vs_offset
, 2);
3455 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3456 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3458 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->param_rw_buffers
,
3459 8 + SI_SGPR_RW_BUFFERS
);
3460 ret
= si_insert_input_ptr(ctx
, ret
,
3461 ctx
->param_bindless_samplers_and_images
,
3462 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3463 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
3464 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->param_vs_state_bits
,
3465 8 + SI_SGPR_VS_STATE_BITS
);
3469 if (ctx
->type
== PIPE_SHADER_VERTEX
)
3470 vgpr
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
3472 vgpr
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
3474 for (unsigned i
= 0; i
< 5; i
++) {
3475 unsigned param
= ctx
->param_gs_vtx01_offset
+ i
;
3476 ret
= si_insert_input_ret_float(ctx
, ret
, param
, vgpr
++);
3478 ctx
->return_value
= ret
;
3481 static void si_llvm_emit_ls_epilogue(struct ac_shader_abi
*abi
,
3482 unsigned max_outputs
,
3483 LLVMValueRef
*addrs
)
3485 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3486 struct si_shader
*shader
= ctx
->shader
;
3487 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3489 LLVMValueRef vertex_id
= LLVMGetParam(ctx
->main_fn
,
3490 ctx
->param_rel_auto_id
);
3491 LLVMValueRef vertex_dw_stride
= get_tcs_in_vertex_dw_stride(ctx
);
3492 LLVMValueRef base_dw_addr
= LLVMBuildMul(ctx
->ac
.builder
, vertex_id
,
3493 vertex_dw_stride
, "");
3495 /* Write outputs to LDS. The next shader (TCS aka HS) will read
3496 * its inputs from it. */
3497 for (i
= 0; i
< info
->num_outputs
; i
++) {
3498 unsigned name
= info
->output_semantic_name
[i
];
3499 unsigned index
= info
->output_semantic_index
[i
];
3501 /* The ARB_shader_viewport_layer_array spec contains the
3504 * 2) What happens if gl_ViewportIndex or gl_Layer is
3505 * written in the vertex shader and a geometry shader is
3508 * RESOLVED: The value written by the last vertex processing
3509 * stage is used. If the last vertex processing stage
3510 * (vertex, tessellation evaluation or geometry) does not
3511 * statically assign to gl_ViewportIndex or gl_Layer, index
3512 * or layer zero is assumed.
3514 * So writes to those outputs in VS-as-LS are simply ignored.
3516 if (name
== TGSI_SEMANTIC_LAYER
||
3517 name
== TGSI_SEMANTIC_VIEWPORT_INDEX
)
3520 int param
= si_shader_io_get_unique_index(name
, index
, false);
3521 LLVMValueRef dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_dw_addr
,
3522 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
3524 for (chan
= 0; chan
< 4; chan
++) {
3525 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
3528 lshs_lds_store(ctx
, chan
, dw_addr
,
3529 LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], ""));
3533 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3534 si_set_ls_return_value_for_tcs(ctx
);
3537 static void si_llvm_emit_es_epilogue(struct ac_shader_abi
*abi
,
3538 unsigned max_outputs
,
3539 LLVMValueRef
*addrs
)
3541 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3542 struct si_shader
*es
= ctx
->shader
;
3543 struct tgsi_shader_info
*info
= &es
->selector
->info
;
3544 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
3545 ctx
->param_es2gs_offset
);
3546 LLVMValueRef lds_base
= NULL
;
3550 if (ctx
->screen
->info
.chip_class
>= GFX9
&& info
->num_outputs
) {
3551 unsigned itemsize_dw
= es
->selector
->esgs_itemsize
/ 4;
3552 LLVMValueRef vertex_idx
= ac_get_thread_id(&ctx
->ac
);
3553 LLVMValueRef wave_idx
= si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 24, 4);
3554 vertex_idx
= LLVMBuildOr(ctx
->ac
.builder
, vertex_idx
,
3555 LLVMBuildMul(ctx
->ac
.builder
, wave_idx
,
3556 LLVMConstInt(ctx
->i32
, ctx
->ac
.wave_size
, false), ""), "");
3557 lds_base
= LLVMBuildMul(ctx
->ac
.builder
, vertex_idx
,
3558 LLVMConstInt(ctx
->i32
, itemsize_dw
, 0), "");
3561 for (i
= 0; i
< info
->num_outputs
; i
++) {
3564 if (info
->output_semantic_name
[i
] == TGSI_SEMANTIC_VIEWPORT_INDEX
||
3565 info
->output_semantic_name
[i
] == TGSI_SEMANTIC_LAYER
)
3568 param
= si_shader_io_get_unique_index(info
->output_semantic_name
[i
],
3569 info
->output_semantic_index
[i
], false);
3571 for (chan
= 0; chan
< 4; chan
++) {
3572 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
3575 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
3576 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
3578 /* GFX9 has the ESGS ring in LDS. */
3579 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3580 LLVMValueRef idx
= LLVMConstInt(ctx
->i32
, param
* 4 + chan
, false);
3581 idx
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
, idx
, "");
3582 ac_build_indexed_store(&ctx
->ac
, ctx
->esgs_ring
, idx
, out_val
);
3586 ac_build_buffer_store_dword(&ctx
->ac
,
3588 out_val
, 1, NULL
, soffset
,
3589 (4 * param
+ chan
) * 4,
3590 ac_glc
| ac_slc
, true);
3594 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3595 si_set_es_return_value_for_gs(ctx
);
3598 static LLVMValueRef
si_get_gs_wave_id(struct si_shader_context
*ctx
)
3600 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3601 return si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 16, 8);
3603 return LLVMGetParam(ctx
->main_fn
, ctx
->param_gs_wave_id
);
3606 static void emit_gs_epilogue(struct si_shader_context
*ctx
)
3608 if (ctx
->shader
->key
.as_ngg
) {
3609 gfx10_ngg_gs_emit_epilogue(ctx
);
3613 if (ctx
->screen
->info
.chip_class
>= GFX10
)
3614 LLVMBuildFence(ctx
->ac
.builder
, LLVMAtomicOrderingRelease
, false, "");
3616 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_NOP
| AC_SENDMSG_GS_DONE
,
3617 si_get_gs_wave_id(ctx
));
3619 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3620 ac_build_endif(&ctx
->ac
, ctx
->merged_wrap_if_label
);
3623 static void si_llvm_emit_gs_epilogue(struct ac_shader_abi
*abi
,
3624 unsigned max_outputs
,
3625 LLVMValueRef
*addrs
)
3627 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3628 struct tgsi_shader_info UNUSED
*info
= &ctx
->shader
->selector
->info
;
3630 assert(info
->num_outputs
<= max_outputs
);
3632 emit_gs_epilogue(ctx
);
3635 static void si_tgsi_emit_gs_epilogue(struct lp_build_tgsi_context
*bld_base
)
3637 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3638 emit_gs_epilogue(ctx
);
3641 static void si_llvm_emit_vs_epilogue(struct ac_shader_abi
*abi
,
3642 unsigned max_outputs
,
3643 LLVMValueRef
*addrs
)
3645 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3646 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
3647 struct si_shader_output_values
*outputs
= NULL
;
3650 assert(!ctx
->shader
->is_gs_copy_shader
);
3651 assert(info
->num_outputs
<= max_outputs
);
3653 outputs
= MALLOC((info
->num_outputs
+ 1) * sizeof(outputs
[0]));
3655 for (i
= 0; i
< info
->num_outputs
; i
++) {
3656 outputs
[i
].semantic_name
= info
->output_semantic_name
[i
];
3657 outputs
[i
].semantic_index
= info
->output_semantic_index
[i
];
3659 for (j
= 0; j
< 4; j
++) {
3660 outputs
[i
].values
[j
] =
3661 LLVMBuildLoad(ctx
->ac
.builder
,
3664 outputs
[i
].vertex_stream
[j
] =
3665 (info
->output_streams
[i
] >> (2 * j
)) & 3;
3669 if (ctx
->ac
.chip_class
<= GFX9
&&
3670 ctx
->shader
->selector
->so
.num_outputs
)
3671 si_llvm_emit_streamout(ctx
, outputs
, i
, 0);
3673 /* Export PrimitiveID. */
3674 if (ctx
->shader
->key
.mono
.u
.vs_export_prim_id
) {
3675 outputs
[i
].semantic_name
= TGSI_SEMANTIC_PRIMID
;
3676 outputs
[i
].semantic_index
= 0;
3677 outputs
[i
].values
[0] = ac_to_float(&ctx
->ac
, si_get_primitive_id(ctx
, 0));
3678 for (j
= 1; j
< 4; j
++)
3679 outputs
[i
].values
[j
] = LLVMConstReal(ctx
->f32
, 0);
3681 memset(outputs
[i
].vertex_stream
, 0,
3682 sizeof(outputs
[i
].vertex_stream
));
3686 si_llvm_export_vs(ctx
, outputs
, i
);
3690 static void si_llvm_emit_prim_discard_cs_epilogue(struct ac_shader_abi
*abi
,
3691 unsigned max_outputs
,
3692 LLVMValueRef
*addrs
)
3694 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3695 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
3696 LLVMValueRef pos
[4] = {};
3698 assert(info
->num_outputs
<= max_outputs
);
3700 for (unsigned i
= 0; i
< info
->num_outputs
; i
++) {
3701 if (info
->output_semantic_name
[i
] != TGSI_SEMANTIC_POSITION
)
3704 for (unsigned chan
= 0; chan
< 4; chan
++)
3705 pos
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
3708 assert(pos
[0] != NULL
);
3710 /* Return the position output. */
3711 LLVMValueRef ret
= ctx
->return_value
;
3712 for (unsigned chan
= 0; chan
< 4; chan
++)
3713 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, pos
[chan
], chan
, "");
3714 ctx
->return_value
= ret
;
3717 static void si_tgsi_emit_epilogue(struct lp_build_tgsi_context
*bld_base
)
3719 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3721 ctx
->abi
.emit_outputs(&ctx
->abi
, RADEON_LLVM_MAX_OUTPUTS
,
3722 &ctx
->outputs
[0][0]);
3725 struct si_ps_exports
{
3727 struct ac_export_args args
[10];
3730 static void si_export_mrt_z(struct lp_build_tgsi_context
*bld_base
,
3731 LLVMValueRef depth
, LLVMValueRef stencil
,
3732 LLVMValueRef samplemask
, struct si_ps_exports
*exp
)
3734 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3735 struct ac_export_args args
;
3737 ac_export_mrt_z(&ctx
->ac
, depth
, stencil
, samplemask
, &args
);
3739 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3742 static void si_export_mrt_color(struct lp_build_tgsi_context
*bld_base
,
3743 LLVMValueRef
*color
, unsigned index
,
3744 unsigned samplemask_param
,
3745 bool is_last
, struct si_ps_exports
*exp
)
3747 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3751 if (ctx
->shader
->key
.part
.ps
.epilog
.clamp_color
)
3752 for (i
= 0; i
< 4; i
++)
3753 color
[i
] = ac_build_clamp(&ctx
->ac
, color
[i
]);
3756 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_to_one
)
3757 color
[3] = ctx
->ac
.f32_1
;
3761 ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_ALWAYS
)
3762 si_alpha_test(bld_base
, color
[3]);
3764 /* Line & polygon smoothing */
3765 if (ctx
->shader
->key
.part
.ps
.epilog
.poly_line_smoothing
)
3766 color
[3] = si_scale_alpha_by_sample_mask(bld_base
, color
[3],
3769 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
3770 if (ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
> 0) {
3771 struct ac_export_args args
[8];
3774 /* Get the export arguments, also find out what the last one is. */
3775 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3776 si_llvm_init_export_args(ctx
, color
,
3777 V_008DFC_SQ_EXP_MRT
+ c
, &args
[c
]);
3778 if (args
[c
].enabled_channels
)
3782 /* Emit all exports. */
3783 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3784 if (is_last
&& last
== c
) {
3785 args
[c
].valid_mask
= 1; /* whether the EXEC mask is valid */
3786 args
[c
].done
= 1; /* DONE bit */
3787 } else if (!args
[c
].enabled_channels
)
3788 continue; /* unnecessary NULL export */
3790 memcpy(&exp
->args
[exp
->num
++], &args
[c
], sizeof(args
[c
]));
3793 struct ac_export_args args
;
3796 si_llvm_init_export_args(ctx
, color
, V_008DFC_SQ_EXP_MRT
+ index
,
3799 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3800 args
.done
= 1; /* DONE bit */
3801 } else if (!args
.enabled_channels
)
3802 return; /* unnecessary NULL export */
3804 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3808 static void si_emit_ps_exports(struct si_shader_context
*ctx
,
3809 struct si_ps_exports
*exp
)
3811 for (unsigned i
= 0; i
< exp
->num
; i
++)
3812 ac_build_export(&ctx
->ac
, &exp
->args
[i
]);
3816 * Return PS outputs in this order:
3818 * v[0:3] = color0.xyzw
3819 * v[4:7] = color1.xyzw
3824 * vN+3 = SampleMaskIn (used for OpenGL smoothing)
3826 * The alpha-ref SGPR is returned via its original location.
3828 static void si_llvm_return_fs_outputs(struct ac_shader_abi
*abi
,
3829 unsigned max_outputs
,
3830 LLVMValueRef
*addrs
)
3832 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3833 struct si_shader
*shader
= ctx
->shader
;
3834 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3835 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3836 unsigned i
, j
, first_vgpr
, vgpr
;
3838 LLVMValueRef color
[8][4] = {};
3839 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
3842 if (ctx
->postponed_kill
)
3843 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildLoad(builder
, ctx
->postponed_kill
, ""));
3845 /* Read the output values. */
3846 for (i
= 0; i
< info
->num_outputs
; i
++) {
3847 unsigned semantic_name
= info
->output_semantic_name
[i
];
3848 unsigned semantic_index
= info
->output_semantic_index
[i
];
3850 switch (semantic_name
) {
3851 case TGSI_SEMANTIC_COLOR
:
3852 assert(semantic_index
< 8);
3853 for (j
= 0; j
< 4; j
++) {
3854 LLVMValueRef ptr
= addrs
[4 * i
+ j
];
3855 LLVMValueRef result
= LLVMBuildLoad(builder
, ptr
, "");
3856 color
[semantic_index
][j
] = result
;
3859 case TGSI_SEMANTIC_POSITION
:
3860 depth
= LLVMBuildLoad(builder
,
3861 addrs
[4 * i
+ 2], "");
3863 case TGSI_SEMANTIC_STENCIL
:
3864 stencil
= LLVMBuildLoad(builder
,
3865 addrs
[4 * i
+ 1], "");
3867 case TGSI_SEMANTIC_SAMPLEMASK
:
3868 samplemask
= LLVMBuildLoad(builder
,
3869 addrs
[4 * i
+ 0], "");
3872 fprintf(stderr
, "Warning: GFX6 unhandled fs output type:%d\n",
3877 /* Fill the return structure. */
3878 ret
= ctx
->return_value
;
3881 ret
= LLVMBuildInsertValue(builder
, ret
,
3882 ac_to_integer(&ctx
->ac
,
3883 LLVMGetParam(ctx
->main_fn
,
3884 SI_PARAM_ALPHA_REF
)),
3885 SI_SGPR_ALPHA_REF
, "");
3888 first_vgpr
= vgpr
= SI_SGPR_ALPHA_REF
+ 1;
3889 for (i
= 0; i
< ARRAY_SIZE(color
); i
++) {
3893 for (j
= 0; j
< 4; j
++)
3894 ret
= LLVMBuildInsertValue(builder
, ret
, color
[i
][j
], vgpr
++, "");
3897 ret
= LLVMBuildInsertValue(builder
, ret
, depth
, vgpr
++, "");
3899 ret
= LLVMBuildInsertValue(builder
, ret
, stencil
, vgpr
++, "");
3901 ret
= LLVMBuildInsertValue(builder
, ret
, samplemask
, vgpr
++, "");
3903 /* Add the input sample mask for smoothing at the end. */
3904 if (vgpr
< first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
)
3905 vgpr
= first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
;
3906 ret
= LLVMBuildInsertValue(builder
, ret
,
3907 LLVMGetParam(ctx
->main_fn
,
3908 SI_PARAM_SAMPLE_COVERAGE
), vgpr
++, "");
3910 ctx
->return_value
= ret
;
3913 static void membar_emit(
3914 const struct lp_build_tgsi_action
*action
,
3915 struct lp_build_tgsi_context
*bld_base
,
3916 struct lp_build_emit_data
*emit_data
)
3918 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3919 LLVMValueRef src0
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, 0);
3920 unsigned flags
= LLVMConstIntGetZExtValue(src0
);
3921 unsigned wait_flags
= 0;
3923 if (flags
& TGSI_MEMBAR_THREAD_GROUP
)
3924 wait_flags
|= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3926 if (flags
& (TGSI_MEMBAR_ATOMIC_BUFFER
|
3927 TGSI_MEMBAR_SHADER_BUFFER
|
3928 TGSI_MEMBAR_SHADER_IMAGE
))
3929 wait_flags
|= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3931 if (flags
& TGSI_MEMBAR_SHARED
)
3932 wait_flags
|= AC_WAIT_LGKM
;
3934 ac_build_waitcnt(&ctx
->ac
, wait_flags
);
3937 static void clock_emit(
3938 const struct lp_build_tgsi_action
*action
,
3939 struct lp_build_tgsi_context
*bld_base
,
3940 struct lp_build_emit_data
*emit_data
)
3942 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3943 LLVMValueRef tmp
= ac_build_shader_clock(&ctx
->ac
);
3945 emit_data
->output
[0] =
3946 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_0
, "");
3947 emit_data
->output
[1] =
3948 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_1
, "");
3951 static void si_llvm_emit_ddxy(
3952 const struct lp_build_tgsi_action
*action
,
3953 struct lp_build_tgsi_context
*bld_base
,
3954 struct lp_build_emit_data
*emit_data
)
3956 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3957 unsigned opcode
= emit_data
->info
->opcode
;
3962 if (opcode
== TGSI_OPCODE_DDX_FINE
)
3963 mask
= AC_TID_MASK_LEFT
;
3964 else if (opcode
== TGSI_OPCODE_DDY_FINE
)
3965 mask
= AC_TID_MASK_TOP
;
3967 mask
= AC_TID_MASK_TOP_LEFT
;
3969 /* for DDX we want to next X pixel, DDY next Y pixel. */
3970 idx
= (opcode
== TGSI_OPCODE_DDX
|| opcode
== TGSI_OPCODE_DDX_FINE
) ? 1 : 2;
3972 val
= ac_to_integer(&ctx
->ac
, emit_data
->args
[0]);
3973 val
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, val
);
3974 emit_data
->output
[emit_data
->chan
] = val
;
3977 static void build_interp_intrinsic(const struct lp_build_tgsi_action
*action
,
3978 struct lp_build_tgsi_context
*bld_base
,
3979 struct lp_build_emit_data
*emit_data
)
3981 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3982 struct si_shader
*shader
= ctx
->shader
;
3983 const struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3984 LLVMValueRef interp_param
;
3985 const struct tgsi_full_instruction
*inst
= emit_data
->inst
;
3986 const struct tgsi_full_src_register
*input
= &inst
->Src
[0];
3987 int input_base
, input_array_size
;
3990 LLVMValueRef prim_mask
= ctx
->abi
.prim_mask
;
3991 LLVMValueRef array_idx
, offset_x
= NULL
, offset_y
= NULL
;
3992 int interp_param_idx
;
3996 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
) {
3997 /* offset is in second src, first two channels */
3998 offset_x
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 1,
4000 offset_y
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 1,
4002 } else if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
4003 LLVMValueRef sample_position
;
4004 LLVMValueRef sample_id
;
4005 LLVMValueRef halfval
= LLVMConstReal(ctx
->f32
, 0.5f
);
4007 /* fetch sample ID, then fetch its sample position,
4008 * and place into first two channels.
4010 sample_id
= lp_build_emit_fetch(bld_base
,
4011 emit_data
->inst
, 1, TGSI_CHAN_X
);
4012 sample_id
= ac_to_integer(&ctx
->ac
, sample_id
);
4014 /* Section 8.13.2 (Interpolation Functions) of the OpenGL Shading
4015 * Language 4.50 spec says about interpolateAtSample:
4017 * "Returns the value of the input interpolant variable at
4018 * the location of sample number sample. If multisample
4019 * buffers are not available, the input variable will be
4020 * evaluated at the center of the pixel. If sample sample
4021 * does not exist, the position used to interpolate the
4022 * input variable is undefined."
4024 * This means that sample_id values outside of the valid are
4025 * in fact valid input, and the usual mechanism for loading the
4026 * sample position doesn't work.
4028 if (ctx
->shader
->key
.mono
.u
.ps
.interpolate_at_sample_force_center
) {
4029 LLVMValueRef center
[4] = {
4030 LLVMConstReal(ctx
->f32
, 0.5),
4031 LLVMConstReal(ctx
->f32
, 0.5),
4036 sample_position
= ac_build_gather_values(&ctx
->ac
, center
, 4);
4038 sample_position
= load_sample_position(&ctx
->abi
, sample_id
);
4041 offset_x
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
,
4044 offset_x
= LLVMBuildFSub(ctx
->ac
.builder
, offset_x
, halfval
, "");
4045 offset_y
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
,
4047 offset_y
= LLVMBuildFSub(ctx
->ac
.builder
, offset_y
, halfval
, "");
4050 assert(input
->Register
.File
== TGSI_FILE_INPUT
);
4052 if (input
->Register
.Indirect
) {
4053 unsigned array_id
= input
->Indirect
.ArrayID
;
4056 input_base
= info
->input_array_first
[array_id
];
4057 input_array_size
= info
->input_array_last
[array_id
] - input_base
+ 1;
4059 input_base
= inst
->Src
[0].Register
.Index
;
4060 input_array_size
= info
->num_inputs
- input_base
;
4063 array_idx
= si_get_indirect_index(ctx
, &input
->Indirect
,
4064 1, input
->Register
.Index
- input_base
);
4066 input_base
= inst
->Src
[0].Register
.Index
;
4067 input_array_size
= 1;
4068 array_idx
= ctx
->i32_0
;
4071 interp
= shader
->selector
->info
.input_interpolate
[input_base
];
4073 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
4074 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
)
4075 location
= TGSI_INTERPOLATE_LOC_CENTER
;
4077 location
= TGSI_INTERPOLATE_LOC_CENTROID
;
4079 interp_param_idx
= lookup_interp_param_index(interp
, location
);
4080 if (interp_param_idx
== -1)
4082 else if (interp_param_idx
)
4083 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
4085 interp_param
= NULL
;
4087 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
4088 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
4089 LLVMValueRef ij_out
[2];
4090 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
4093 * take the I then J parameters, and the DDX/Y for it, and
4094 * calculate the IJ inputs for the interpolator.
4095 * temp1 = ddx * offset/sample.x + I;
4096 * interp_param.I = ddy * offset/sample.y + temp1;
4097 * temp1 = ddx * offset/sample.x + J;
4098 * interp_param.J = ddy * offset/sample.y + temp1;
4100 for (i
= 0; i
< 2; i
++) {
4101 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->i32
, i
, 0);
4102 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->i32
, i
+ 2, 0);
4103 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4104 ddxy_out
, ix_ll
, "");
4105 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4106 ddxy_out
, iy_ll
, "");
4107 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4108 interp_param
, ix_ll
, "");
4111 interp_el
= ac_to_float(&ctx
->ac
, interp_el
);
4113 temp
= ac_build_fmad(&ctx
->ac
, ddx_el
, offset_x
, interp_el
);
4114 ij_out
[i
] = ac_build_fmad(&ctx
->ac
, ddy_el
, offset_y
, temp
);
4116 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
4120 interp_param
= ac_to_float(&ctx
->ac
, interp_param
);
4122 for (chan
= 0; chan
< 4; chan
++) {
4123 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->f32
, input_array_size
));
4124 unsigned schan
= tgsi_util_get_full_src_register_swizzle(&inst
->Src
[0], chan
);
4126 for (unsigned idx
= 0; idx
< input_array_size
; ++idx
) {
4127 LLVMValueRef v
, i
= NULL
, j
= NULL
;
4130 i
= LLVMBuildExtractElement(
4131 ctx
->ac
.builder
, interp_param
, ctx
->i32_0
, "");
4132 j
= LLVMBuildExtractElement(
4133 ctx
->ac
.builder
, interp_param
, ctx
->i32_1
, "");
4135 v
= si_build_fs_interp(ctx
, input_base
+ idx
, schan
,
4138 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
,
4139 gather
, v
, LLVMConstInt(ctx
->i32
, idx
, false), "");
4142 emit_data
->output
[chan
] = LLVMBuildExtractElement(
4143 ctx
->ac
.builder
, gather
, array_idx
, "");
4147 static void vote_all_emit(
4148 const struct lp_build_tgsi_action
*action
,
4149 struct lp_build_tgsi_context
*bld_base
,
4150 struct lp_build_emit_data
*emit_data
)
4152 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4154 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, emit_data
->args
[0]);
4155 emit_data
->output
[emit_data
->chan
] =
4156 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4159 static void vote_any_emit(
4160 const struct lp_build_tgsi_action
*action
,
4161 struct lp_build_tgsi_context
*bld_base
,
4162 struct lp_build_emit_data
*emit_data
)
4164 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4166 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, emit_data
->args
[0]);
4167 emit_data
->output
[emit_data
->chan
] =
4168 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4171 static void vote_eq_emit(
4172 const struct lp_build_tgsi_action
*action
,
4173 struct lp_build_tgsi_context
*bld_base
,
4174 struct lp_build_emit_data
*emit_data
)
4176 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4178 LLVMValueRef tmp
= ac_build_vote_eq(&ctx
->ac
, emit_data
->args
[0]);
4179 emit_data
->output
[emit_data
->chan
] =
4180 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4183 static void ballot_emit(
4184 const struct lp_build_tgsi_action
*action
,
4185 struct lp_build_tgsi_context
*bld_base
,
4186 struct lp_build_emit_data
*emit_data
)
4188 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4189 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4192 tmp
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, TGSI_CHAN_X
);
4193 tmp
= ac_build_ballot(&ctx
->ac
, tmp
);
4195 emit_data
->output
[0] = LLVMBuildTrunc(builder
, tmp
, ctx
->i32
, "");
4197 if (ctx
->ac
.wave_size
== 32) {
4198 emit_data
->output
[1] = ctx
->i32_0
;
4200 tmp
= LLVMBuildLShr(builder
, tmp
, LLVMConstInt(ctx
->i64
, 32, 0), "");
4201 emit_data
->output
[1] = LLVMBuildTrunc(builder
, tmp
, ctx
->i32
, "");
4205 static void read_lane_emit(
4206 const struct lp_build_tgsi_action
*action
,
4207 struct lp_build_tgsi_context
*bld_base
,
4208 struct lp_build_emit_data
*emit_data
)
4210 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4212 if (emit_data
->inst
->Instruction
.Opcode
== TGSI_OPCODE_READ_INVOC
) {
4213 emit_data
->args
[0] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
4214 0, emit_data
->src_chan
);
4216 /* Always read the source invocation (= lane) from the X channel. */
4217 emit_data
->args
[1] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
4219 emit_data
->arg_count
= 2;
4222 /* We currently have no other way to prevent LLVM from lifting the icmp
4223 * calls to a dominating basic block.
4225 ac_build_optimization_barrier(&ctx
->ac
, &emit_data
->args
[0]);
4227 for (unsigned i
= 0; i
< emit_data
->arg_count
; ++i
)
4228 emit_data
->args
[i
] = ac_to_integer(&ctx
->ac
, emit_data
->args
[i
]);
4230 emit_data
->output
[emit_data
->chan
] =
4231 ac_build_intrinsic(&ctx
->ac
, action
->intr_name
,
4232 ctx
->i32
, emit_data
->args
, emit_data
->arg_count
,
4233 AC_FUNC_ATTR_READNONE
|
4234 AC_FUNC_ATTR_CONVERGENT
);
4237 static unsigned si_llvm_get_stream(struct lp_build_tgsi_context
*bld_base
,
4238 struct lp_build_emit_data
*emit_data
)
4240 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4241 struct tgsi_src_register src0
= emit_data
->inst
->Src
[0].Register
;
4245 assert(src0
.File
== TGSI_FILE_IMMEDIATE
);
4247 imm
= ctx
->imms
[src0
.Index
* TGSI_NUM_CHANNELS
+ src0
.SwizzleX
];
4248 stream
= LLVMConstIntGetZExtValue(imm
) & 0x3;
4252 /* Emit one vertex from the geometry shader */
4253 static void si_llvm_emit_vertex(struct ac_shader_abi
*abi
,
4255 LLVMValueRef
*addrs
)
4257 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4259 if (ctx
->shader
->key
.as_ngg
) {
4260 gfx10_ngg_gs_emit_vertex(ctx
, stream
, addrs
);
4264 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
4265 struct si_shader
*shader
= ctx
->shader
;
4266 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
4267 ctx
->param_gs2vs_offset
);
4268 LLVMValueRef gs_next_vertex
;
4269 LLVMValueRef can_emit
;
4270 unsigned chan
, offset
;
4273 /* Write vertex attribute values to GSVS ring */
4274 gs_next_vertex
= LLVMBuildLoad(ctx
->ac
.builder
,
4275 ctx
->gs_next_vertex
[stream
],
4278 /* If this thread has already emitted the declared maximum number of
4279 * vertices, skip the write: excessive vertex emissions are not
4280 * supposed to have any effect.
4282 * If the shader has no writes to memory, kill it instead. This skips
4283 * further memory loads and may allow LLVM to skip to the end
4286 can_emit
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, gs_next_vertex
,
4287 LLVMConstInt(ctx
->i32
,
4288 shader
->selector
->gs_max_out_vertices
, 0), "");
4290 bool use_kill
= !info
->writes_memory
;
4292 ac_build_kill_if_false(&ctx
->ac
, can_emit
);
4294 ac_build_ifcc(&ctx
->ac
, can_emit
, 6505);
4298 for (i
= 0; i
< info
->num_outputs
; i
++) {
4299 for (chan
= 0; chan
< 4; chan
++) {
4300 if (!(info
->output_usagemask
[i
] & (1 << chan
)) ||
4301 ((info
->output_streams
[i
] >> (2 * chan
)) & 3) != stream
)
4304 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
4305 LLVMValueRef voffset
=
4306 LLVMConstInt(ctx
->i32
, offset
*
4307 shader
->selector
->gs_max_out_vertices
, 0);
4310 voffset
= LLVMBuildAdd(ctx
->ac
.builder
, voffset
, gs_next_vertex
, "");
4311 voffset
= LLVMBuildMul(ctx
->ac
.builder
, voffset
,
4312 LLVMConstInt(ctx
->i32
, 4, 0), "");
4314 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
4316 ac_build_buffer_store_dword(&ctx
->ac
,
4317 ctx
->gsvs_ring
[stream
],
4319 voffset
, soffset
, 0,
4320 ac_glc
| ac_slc
, true);
4324 gs_next_vertex
= LLVMBuildAdd(ctx
->ac
.builder
, gs_next_vertex
, ctx
->i32_1
, "");
4325 LLVMBuildStore(ctx
->ac
.builder
, gs_next_vertex
, ctx
->gs_next_vertex
[stream
]);
4327 /* Signal vertex emission if vertex data was written. */
4329 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_EMIT
| AC_SENDMSG_GS
| (stream
<< 8),
4330 si_get_gs_wave_id(ctx
));
4334 ac_build_endif(&ctx
->ac
, 6505);
4337 /* Emit one vertex from the geometry shader */
4338 static void si_tgsi_emit_vertex(
4339 const struct lp_build_tgsi_action
*action
,
4340 struct lp_build_tgsi_context
*bld_base
,
4341 struct lp_build_emit_data
*emit_data
)
4343 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4344 unsigned stream
= si_llvm_get_stream(bld_base
, emit_data
);
4346 si_llvm_emit_vertex(&ctx
->abi
, stream
, ctx
->outputs
[0]);
4349 /* Cut one primitive from the geometry shader */
4350 static void si_llvm_emit_primitive(struct ac_shader_abi
*abi
,
4353 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4355 if (ctx
->shader
->key
.as_ngg
) {
4356 LLVMBuildStore(ctx
->ac
.builder
, ctx
->ac
.i32_0
, ctx
->gs_curprim_verts
[stream
]);
4360 /* Signal primitive cut */
4361 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_CUT
| AC_SENDMSG_GS
| (stream
<< 8),
4362 si_get_gs_wave_id(ctx
));
4365 /* Cut one primitive from the geometry shader */
4366 static void si_tgsi_emit_primitive(
4367 const struct lp_build_tgsi_action
*action
,
4368 struct lp_build_tgsi_context
*bld_base
,
4369 struct lp_build_emit_data
*emit_data
)
4371 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4373 si_llvm_emit_primitive(&ctx
->abi
, si_llvm_get_stream(bld_base
, emit_data
));
4376 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
4377 struct lp_build_tgsi_context
*bld_base
,
4378 struct lp_build_emit_data
*emit_data
)
4380 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4382 /* GFX6 only (thanks to a hw bug workaround):
4383 * The real barrier instruction isn’t needed, because an entire patch
4384 * always fits into a single wave.
4386 if (ctx
->screen
->info
.chip_class
== GFX6
&&
4387 ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
4388 ac_build_waitcnt(&ctx
->ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
4392 ac_build_s_barrier(&ctx
->ac
);
4395 void si_create_function(struct si_shader_context
*ctx
,
4397 LLVMTypeRef
*returns
, unsigned num_returns
,
4398 struct si_function_info
*fninfo
,
4399 unsigned max_workgroup_size
)
4403 si_llvm_create_func(ctx
, name
, returns
, num_returns
,
4404 fninfo
->types
, fninfo
->num_params
);
4405 ctx
->return_value
= LLVMGetUndef(ctx
->return_type
);
4407 for (i
= 0; i
< fninfo
->num_sgpr_params
; ++i
) {
4408 LLVMValueRef P
= LLVMGetParam(ctx
->main_fn
, i
);
4410 /* The combination of:
4414 * allows the optimization passes to move loads and reduces
4415 * SGPR spilling significantly.
4417 ac_add_function_attr(ctx
->ac
.context
, ctx
->main_fn
, i
+ 1,
4418 AC_FUNC_ATTR_INREG
);
4420 if (LLVMGetTypeKind(LLVMTypeOf(P
)) == LLVMPointerTypeKind
) {
4421 ac_add_function_attr(ctx
->ac
.context
, ctx
->main_fn
, i
+ 1,
4422 AC_FUNC_ATTR_NOALIAS
);
4423 ac_add_attr_dereferenceable(P
, UINT64_MAX
);
4427 for (i
= 0; i
< fninfo
->num_params
; ++i
) {
4428 if (fninfo
->assign
[i
])
4429 *fninfo
->assign
[i
] = LLVMGetParam(ctx
->main_fn
, i
);
4432 if (ctx
->screen
->info
.address32_hi
) {
4433 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
4434 "amdgpu-32bit-address-high-bits",
4435 ctx
->screen
->info
.address32_hi
);
4438 ac_llvm_set_workgroup_size(ctx
->main_fn
, max_workgroup_size
);
4440 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4441 "no-signed-zeros-fp-math",
4444 if (ctx
->screen
->debug_flags
& DBG(UNSAFE_MATH
)) {
4445 /* These were copied from some LLVM test. */
4446 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4447 "less-precise-fpmad",
4449 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4452 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4455 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4461 static void declare_streamout_params(struct si_shader_context
*ctx
,
4462 struct pipe_stream_output_info
*so
,
4463 struct si_function_info
*fninfo
)
4465 if (ctx
->ac
.chip_class
>= GFX10
)
4468 /* Streamout SGPRs. */
4469 if (so
->num_outputs
) {
4470 if (ctx
->type
!= PIPE_SHADER_TESS_EVAL
)
4471 ctx
->param_streamout_config
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4473 ctx
->param_streamout_config
= fninfo
->num_params
- 1;
4475 ctx
->param_streamout_write_index
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4477 /* A streamout buffer offset is loaded if the stride is non-zero. */
4478 for (int i
= 0; i
< 4; i
++) {
4482 ctx
->param_streamout_offset
[i
] = add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4486 static unsigned si_get_max_workgroup_size(const struct si_shader
*shader
)
4488 switch (shader
->selector
->type
) {
4489 case PIPE_SHADER_VERTEX
:
4490 case PIPE_SHADER_TESS_EVAL
:
4491 return shader
->key
.as_ngg
? 128 : 0;
4493 case PIPE_SHADER_TESS_CTRL
:
4494 /* Return this so that LLVM doesn't remove s_barrier
4495 * instructions on chips where we use s_barrier. */
4496 return shader
->selector
->screen
->info
.chip_class
>= GFX7
? 128 : 0;
4498 case PIPE_SHADER_GEOMETRY
:
4499 return shader
->selector
->screen
->info
.chip_class
>= GFX9
? 128 : 0;
4501 case PIPE_SHADER_COMPUTE
:
4502 break; /* see below */
4508 const unsigned *properties
= shader
->selector
->info
.properties
;
4509 unsigned max_work_group_size
=
4510 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] *
4511 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
] *
4512 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
];
4514 if (!max_work_group_size
) {
4515 /* This is a variable group size compute shader,
4516 * compile it for the maximum possible group size.
4518 max_work_group_size
= SI_MAX_VARIABLE_THREADS_PER_BLOCK
;
4520 return max_work_group_size
;
4523 static void declare_const_and_shader_buffers(struct si_shader_context
*ctx
,
4524 struct si_function_info
*fninfo
,
4527 LLVMTypeRef const_shader_buf_type
;
4529 if (ctx
->shader
->selector
->info
.const_buffers_declared
== 1 &&
4530 ctx
->shader
->selector
->info
.shader_buffers_declared
== 0)
4531 const_shader_buf_type
= ctx
->f32
;
4533 const_shader_buf_type
= ctx
->v4i32
;
4535 unsigned const_and_shader_buffers
=
4536 add_arg(fninfo
, ARG_SGPR
,
4537 ac_array_in_const32_addr_space(const_shader_buf_type
));
4540 ctx
->param_const_and_shader_buffers
= const_and_shader_buffers
;
4543 static void declare_samplers_and_images(struct si_shader_context
*ctx
,
4544 struct si_function_info
*fninfo
,
4547 unsigned samplers_and_images
=
4548 add_arg(fninfo
, ARG_SGPR
,
4549 ac_array_in_const32_addr_space(ctx
->v8i32
));
4552 ctx
->param_samplers_and_images
= samplers_and_images
;
4555 static void declare_per_stage_desc_pointers(struct si_shader_context
*ctx
,
4556 struct si_function_info
*fninfo
,
4559 declare_const_and_shader_buffers(ctx
, fninfo
, assign_params
);
4560 declare_samplers_and_images(ctx
, fninfo
, assign_params
);
4563 static void declare_global_desc_pointers(struct si_shader_context
*ctx
,
4564 struct si_function_info
*fninfo
)
4566 ctx
->param_rw_buffers
= add_arg(fninfo
, ARG_SGPR
,
4567 ac_array_in_const32_addr_space(ctx
->v4i32
));
4568 ctx
->param_bindless_samplers_and_images
= add_arg(fninfo
, ARG_SGPR
,
4569 ac_array_in_const32_addr_space(ctx
->v8i32
));
4572 static void declare_vs_specific_input_sgprs(struct si_shader_context
*ctx
,
4573 struct si_function_info
*fninfo
)
4575 ctx
->param_vs_state_bits
= add_arg(fninfo
, ARG_SGPR
, ctx
->i32
);
4576 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.base_vertex
);
4577 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.start_instance
);
4578 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.draw_id
);
4581 static void declare_vs_input_vgprs(struct si_shader_context
*ctx
,
4582 struct si_function_info
*fninfo
,
4583 unsigned *num_prolog_vgprs
)
4585 struct si_shader
*shader
= ctx
->shader
;
4587 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.vertex_id
);
4588 if (shader
->key
.as_ls
) {
4589 ctx
->param_rel_auto_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4590 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
4591 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* user VGPR */
4592 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4594 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4595 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* unused */
4597 } else if (ctx
->screen
->info
.chip_class
== GFX10
&&
4598 !shader
->is_gs_copy_shader
) {
4599 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* user vgpr */
4600 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* user vgpr */
4601 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4603 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4604 ctx
->param_vs_prim_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4605 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* unused */
4608 if (!shader
->is_gs_copy_shader
) {
4609 /* Vertex load indices. */
4610 ctx
->param_vertex_index0
= fninfo
->num_params
;
4611 for (unsigned i
= 0; i
< shader
->selector
->info
.num_inputs
; i
++)
4612 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4613 *num_prolog_vgprs
+= shader
->selector
->info
.num_inputs
;
4617 static void declare_vs_blit_inputs(struct si_shader_context
*ctx
,
4618 struct si_function_info
*fninfo
,
4619 unsigned vs_blit_property
)
4621 ctx
->param_vs_blit_inputs
= fninfo
->num_params
;
4622 add_arg(fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x1, y1 */
4623 add_arg(fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x2, y2 */
4624 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* depth */
4626 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
4627 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color0 */
4628 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color1 */
4629 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color2 */
4630 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color3 */
4631 } else if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
) {
4632 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x1 */
4633 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y1 */
4634 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x2 */
4635 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y2 */
4636 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.z */
4637 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.w */
4641 static void declare_tes_input_vgprs(struct si_shader_context
*ctx
,
4642 struct si_function_info
*fninfo
)
4644 ctx
->param_tes_u
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4645 ctx
->param_tes_v
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4646 ctx
->param_tes_rel_patch_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4647 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tes_patch_id
);
4651 /* Convenient merged shader definitions. */
4652 SI_SHADER_MERGED_VERTEX_TESSCTRL
= PIPE_SHADER_TYPES
,
4653 SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
,
4656 static void create_function(struct si_shader_context
*ctx
)
4658 struct si_shader
*shader
= ctx
->shader
;
4659 struct si_function_info fninfo
;
4660 LLVMTypeRef returns
[16+32*4];
4661 unsigned i
, num_return_sgprs
;
4662 unsigned num_returns
= 0;
4663 unsigned num_prolog_vgprs
= 0;
4664 unsigned type
= ctx
->type
;
4665 unsigned vs_blit_property
=
4666 shader
->selector
->info
.properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
4668 si_init_function_info(&fninfo
);
4670 /* Set MERGED shaders. */
4671 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
4672 if (shader
->key
.as_ls
|| type
== PIPE_SHADER_TESS_CTRL
)
4673 type
= SI_SHADER_MERGED_VERTEX_TESSCTRL
; /* LS or HS */
4674 else if (shader
->key
.as_es
|| shader
->key
.as_ngg
|| type
== PIPE_SHADER_GEOMETRY
)
4675 type
= SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
;
4678 LLVMTypeRef v3i32
= LLVMVectorType(ctx
->i32
, 3);
4681 case PIPE_SHADER_VERTEX
:
4682 declare_global_desc_pointers(ctx
, &fninfo
);
4684 if (vs_blit_property
) {
4685 declare_vs_blit_inputs(ctx
, &fninfo
, vs_blit_property
);
4688 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4692 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4693 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4694 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4695 ac_array_in_const32_addr_space(ctx
->v4i32
));
4697 if (shader
->key
.as_es
) {
4698 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4699 } else if (shader
->key
.as_ls
) {
4700 /* no extra parameters */
4702 if (shader
->is_gs_copy_shader
) {
4703 fninfo
.num_params
= ctx
->param_vs_state_bits
+ 1;
4704 fninfo
.num_sgpr_params
= fninfo
.num_params
;
4707 /* The locations of the other parameters are assigned dynamically. */
4708 declare_streamout_params(ctx
, &shader
->selector
->so
,
4713 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4716 if (shader
->key
.opt
.vs_as_prim_discard_cs
) {
4717 for (i
= 0; i
< 4; i
++)
4718 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4722 case PIPE_SHADER_TESS_CTRL
: /* GFX6-GFX8 */
4723 declare_global_desc_pointers(ctx
, &fninfo
);
4724 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4725 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4726 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4727 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4728 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4729 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4730 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4733 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_patch_id
);
4734 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_rel_ids
);
4736 /* param_tcs_offchip_offset and param_tcs_factor_offset are
4737 * placed after the user SGPRs.
4739 for (i
= 0; i
< GFX6_TCS_NUM_USER_SGPR
+ 2; i
++)
4740 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4741 for (i
= 0; i
< 11; i
++)
4742 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4745 case SI_SHADER_MERGED_VERTEX_TESSCTRL
:
4746 /* Merged stages have 8 system SGPRs at the beginning. */
4747 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_HS */
4748 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4749 ctx
->type
== PIPE_SHADER_TESS_CTRL
);
4750 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4751 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4752 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4753 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4754 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4755 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4757 declare_global_desc_pointers(ctx
, &fninfo
);
4758 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4759 ctx
->type
== PIPE_SHADER_VERTEX
);
4760 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4762 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4763 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4764 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4765 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4766 ac_array_in_const32_addr_space(ctx
->v4i32
));
4768 /* VGPRs (first TCS, then VS) */
4769 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_patch_id
);
4770 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_rel_ids
);
4772 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4773 declare_vs_input_vgprs(ctx
, &fninfo
,
4776 /* LS return values are inputs to the TCS main shader part. */
4777 for (i
= 0; i
< 8 + GFX9_TCS_NUM_USER_SGPR
; i
++)
4778 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4779 for (i
= 0; i
< 2; i
++)
4780 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4782 /* TCS return values are inputs to the TCS epilog.
4784 * param_tcs_offchip_offset, param_tcs_factor_offset,
4785 * param_tcs_offchip_layout, and param_rw_buffers
4786 * should be passed to the epilog.
4788 for (i
= 0; i
<= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
; i
++)
4789 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4790 for (i
= 0; i
< 11; i
++)
4791 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4795 case SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
:
4796 /* Merged stages have 8 system SGPRs at the beginning. */
4797 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_GS */
4798 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4799 ctx
->type
== PIPE_SHADER_GEOMETRY
);
4801 if (ctx
->shader
->key
.as_ngg
)
4802 add_arg_assign(&fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->gs_tg_info
);
4804 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4806 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4807 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4808 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4809 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS << 8) */
4810 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS >> 24) */
4812 declare_global_desc_pointers(ctx
, &fninfo
);
4813 if (ctx
->type
!= PIPE_SHADER_VERTEX
|| !vs_blit_property
) {
4814 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4815 (ctx
->type
== PIPE_SHADER_VERTEX
||
4816 ctx
->type
== PIPE_SHADER_TESS_EVAL
));
4819 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4820 if (vs_blit_property
)
4821 declare_vs_blit_inputs(ctx
, &fninfo
, vs_blit_property
);
4823 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4825 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4826 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4827 ctx
->param_tes_offchip_addr
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4828 /* Declare as many input SGPRs as the VS has. */
4831 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4832 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4833 ac_array_in_const32_addr_space(ctx
->v4i32
));
4836 /* VGPRs (first GS, then VS/TES) */
4837 ctx
->param_gs_vtx01_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4838 ctx
->param_gs_vtx23_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4839 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4840 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4841 ctx
->param_gs_vtx45_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4843 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4844 declare_vs_input_vgprs(ctx
, &fninfo
,
4846 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
4847 declare_tes_input_vgprs(ctx
, &fninfo
);
4850 if (ctx
->shader
->key
.as_es
&&
4851 (ctx
->type
== PIPE_SHADER_VERTEX
||
4852 ctx
->type
== PIPE_SHADER_TESS_EVAL
)) {
4853 unsigned num_user_sgprs
;
4855 if (ctx
->type
== PIPE_SHADER_VERTEX
)
4856 num_user_sgprs
= GFX9_VSGS_NUM_USER_SGPR
;
4858 num_user_sgprs
= GFX9_TESGS_NUM_USER_SGPR
;
4860 /* ES return values are inputs to GS. */
4861 for (i
= 0; i
< 8 + num_user_sgprs
; i
++)
4862 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4863 for (i
= 0; i
< 5; i
++)
4864 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4868 case PIPE_SHADER_TESS_EVAL
:
4869 declare_global_desc_pointers(ctx
, &fninfo
);
4870 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4871 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4872 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4873 ctx
->param_tes_offchip_addr
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4875 if (shader
->key
.as_es
) {
4876 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4877 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4878 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4880 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4881 declare_streamout_params(ctx
, &shader
->selector
->so
,
4883 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4887 declare_tes_input_vgprs(ctx
, &fninfo
);
4890 case PIPE_SHADER_GEOMETRY
:
4891 declare_global_desc_pointers(ctx
, &fninfo
);
4892 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4893 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4894 ctx
->param_gs_wave_id
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4897 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[0]);
4898 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[1]);
4899 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4900 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[2]);
4901 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[3]);
4902 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[4]);
4903 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[5]);
4904 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4907 case PIPE_SHADER_FRAGMENT
:
4908 declare_global_desc_pointers(ctx
, &fninfo
);
4909 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4910 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
4911 add_arg_assign_checked(&fninfo
, ARG_SGPR
, ctx
->i32
,
4912 &ctx
->abi
.prim_mask
, SI_PARAM_PRIM_MASK
);
4914 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_SAMPLE
);
4915 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTER
);
4916 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTROID
);
4917 add_arg_checked(&fninfo
, ARG_VGPR
, v3i32
, SI_PARAM_PERSP_PULL_MODEL
);
4918 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_SAMPLE
);
4919 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTER
);
4920 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTROID
);
4921 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->f32
, SI_PARAM_LINE_STIPPLE_TEX
);
4922 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4923 &ctx
->abi
.frag_pos
[0], SI_PARAM_POS_X_FLOAT
);
4924 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4925 &ctx
->abi
.frag_pos
[1], SI_PARAM_POS_Y_FLOAT
);
4926 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4927 &ctx
->abi
.frag_pos
[2], SI_PARAM_POS_Z_FLOAT
);
4928 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4929 &ctx
->abi
.frag_pos
[3], SI_PARAM_POS_W_FLOAT
);
4930 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4931 &ctx
->abi
.front_face
, SI_PARAM_FRONT_FACE
);
4932 shader
->info
.face_vgpr_index
= 20;
4933 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4934 &ctx
->abi
.ancillary
, SI_PARAM_ANCILLARY
);
4935 shader
->info
.ancillary_vgpr_index
= 21;
4936 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4937 &ctx
->abi
.sample_coverage
, SI_PARAM_SAMPLE_COVERAGE
);
4938 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->i32
, SI_PARAM_POS_FIXED_PT
);
4940 /* Color inputs from the prolog. */
4941 if (shader
->selector
->info
.colors_read
) {
4942 unsigned num_color_elements
=
4943 util_bitcount(shader
->selector
->info
.colors_read
);
4945 assert(fninfo
.num_params
+ num_color_elements
<= ARRAY_SIZE(fninfo
.types
));
4946 for (i
= 0; i
< num_color_elements
; i
++)
4947 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
4949 num_prolog_vgprs
+= num_color_elements
;
4952 /* Outputs for the epilog. */
4953 num_return_sgprs
= SI_SGPR_ALPHA_REF
+ 1;
4956 util_bitcount(shader
->selector
->info
.colors_written
) * 4 +
4957 shader
->selector
->info
.writes_z
+
4958 shader
->selector
->info
.writes_stencil
+
4959 shader
->selector
->info
.writes_samplemask
+
4960 1 /* SampleMaskIn */;
4962 num_returns
= MAX2(num_returns
,
4964 PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
4966 for (i
= 0; i
< num_return_sgprs
; i
++)
4967 returns
[i
] = ctx
->i32
;
4968 for (; i
< num_returns
; i
++)
4969 returns
[i
] = ctx
->f32
;
4972 case PIPE_SHADER_COMPUTE
:
4973 declare_global_desc_pointers(ctx
, &fninfo
);
4974 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4975 if (shader
->selector
->info
.uses_grid_size
)
4976 add_arg_assign(&fninfo
, ARG_SGPR
, v3i32
, &ctx
->abi
.num_work_groups
);
4977 if (shader
->selector
->info
.uses_block_size
&&
4978 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] == 0)
4979 ctx
->param_block_size
= add_arg(&fninfo
, ARG_SGPR
, v3i32
);
4981 unsigned cs_user_data_dwords
=
4982 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_USER_DATA_DWORDS
];
4983 if (cs_user_data_dwords
) {
4984 ctx
->param_cs_user_data
= add_arg(&fninfo
, ARG_SGPR
,
4985 LLVMVectorType(ctx
->i32
, cs_user_data_dwords
));
4988 for (i
= 0; i
< 3; i
++) {
4989 ctx
->abi
.workgroup_ids
[i
] = NULL
;
4990 if (shader
->selector
->info
.uses_block_id
[i
])
4991 add_arg_assign(&fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.workgroup_ids
[i
]);
4994 add_arg_assign(&fninfo
, ARG_VGPR
, v3i32
, &ctx
->abi
.local_invocation_ids
);
4997 assert(0 && "unimplemented shader");
5001 si_create_function(ctx
, "main", returns
, num_returns
, &fninfo
,
5002 si_get_max_workgroup_size(shader
));
5004 /* Reserve register locations for VGPR inputs the PS prolog may need. */
5005 if (ctx
->type
== PIPE_SHADER_FRAGMENT
&& !ctx
->shader
->is_monolithic
) {
5006 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
5007 "InitialPSInputAddr",
5008 S_0286D0_PERSP_SAMPLE_ENA(1) |
5009 S_0286D0_PERSP_CENTER_ENA(1) |
5010 S_0286D0_PERSP_CENTROID_ENA(1) |
5011 S_0286D0_LINEAR_SAMPLE_ENA(1) |
5012 S_0286D0_LINEAR_CENTER_ENA(1) |
5013 S_0286D0_LINEAR_CENTROID_ENA(1) |
5014 S_0286D0_FRONT_FACE_ENA(1) |
5015 S_0286D0_ANCILLARY_ENA(1) |
5016 S_0286D0_POS_FIXED_PT_ENA(1));
5019 shader
->info
.num_input_sgprs
= 0;
5020 shader
->info
.num_input_vgprs
= 0;
5022 for (i
= 0; i
< fninfo
.num_sgpr_params
; ++i
)
5023 shader
->info
.num_input_sgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
5025 for (; i
< fninfo
.num_params
; ++i
)
5026 shader
->info
.num_input_vgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
5028 assert(shader
->info
.num_input_vgprs
>= num_prolog_vgprs
);
5029 shader
->info
.num_input_vgprs
-= num_prolog_vgprs
;
5031 if (shader
->key
.as_ls
|| ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
5032 if (USE_LDS_SYMBOLS
&& HAVE_LLVM
>= 0x0900) {
5033 /* The LSHS size is not known until draw time, so we append it
5034 * at the end of whatever LDS use there may be in the rest of
5035 * the shader (currently none, unless LLVM decides to do its
5036 * own LDS-based lowering).
5038 ctx
->ac
.lds
= LLVMAddGlobalInAddressSpace(
5039 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
5040 "__lds_end", AC_ADDR_SPACE_LDS
);
5041 LLVMSetAlignment(ctx
->ac
.lds
, 256);
5043 ac_declare_lds_as_pointer(&ctx
->ac
);
5048 /* Ensure that the esgs ring is declared.
5050 * We declare it with 64KB alignment as a hint that the
5051 * pointer value will always be 0.
5053 static void declare_esgs_ring(struct si_shader_context
*ctx
)
5058 assert(!LLVMGetNamedGlobal(ctx
->ac
.module
, "esgs_ring"));
5060 ctx
->esgs_ring
= LLVMAddGlobalInAddressSpace(
5061 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
5064 LLVMSetLinkage(ctx
->esgs_ring
, LLVMExternalLinkage
);
5065 LLVMSetAlignment(ctx
->esgs_ring
, 64 * 1024);
5069 * Load ESGS and GSVS ring buffer resource descriptors and save the variables
5072 static void preload_ring_buffers(struct si_shader_context
*ctx
)
5074 LLVMBuilderRef builder
= ctx
->ac
.builder
;
5076 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
5077 ctx
->param_rw_buffers
);
5079 if (ctx
->shader
->key
.as_es
|| ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5080 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
5082 ctx
->type
== PIPE_SHADER_GEOMETRY
? SI_GS_RING_ESGS
5084 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, ring
, 0);
5087 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
5089 if (USE_LDS_SYMBOLS
&& HAVE_LLVM
>= 0x0900) {
5090 /* Declare the ESGS ring as an explicit LDS symbol. */
5091 declare_esgs_ring(ctx
);
5093 ac_declare_lds_as_pointer(&ctx
->ac
);
5094 ctx
->esgs_ring
= ctx
->ac
.lds
;
5099 if (ctx
->shader
->is_gs_copy_shader
) {
5100 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
5103 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
5104 } else if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5105 const struct si_shader_selector
*sel
= ctx
->shader
->selector
;
5106 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
5107 LLVMValueRef base_ring
;
5109 base_ring
= ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
5111 /* The conceptual layout of the GSVS ring is
5112 * v0c0 .. vLv0 v0c1 .. vLc1 ..
5113 * but the real memory layout is swizzled across
5115 * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL
5117 * Override the buffer descriptor accordingly.
5119 LLVMTypeRef v2i64
= LLVMVectorType(ctx
->i64
, 2);
5120 uint64_t stream_offset
= 0;
5122 for (unsigned stream
= 0; stream
< 4; ++stream
) {
5123 unsigned num_components
;
5125 unsigned num_records
;
5126 LLVMValueRef ring
, tmp
;
5128 num_components
= sel
->info
.num_stream_output_components
[stream
];
5129 if (!num_components
)
5132 stride
= 4 * num_components
* sel
->gs_max_out_vertices
;
5134 /* Limit on the stride field for <= GFX7. */
5135 assert(stride
< (1 << 14));
5137 num_records
= ctx
->ac
.wave_size
;
5139 ring
= LLVMBuildBitCast(builder
, base_ring
, v2i64
, "");
5140 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_0
, "");
5141 tmp
= LLVMBuildAdd(builder
, tmp
,
5142 LLVMConstInt(ctx
->i64
,
5143 stream_offset
, 0), "");
5144 stream_offset
+= stride
* ctx
->ac
.wave_size
;
5146 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_0
, "");
5147 ring
= LLVMBuildBitCast(builder
, ring
, ctx
->v4i32
, "");
5148 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_1
, "");
5149 tmp
= LLVMBuildOr(builder
, tmp
,
5150 LLVMConstInt(ctx
->i32
,
5151 S_008F04_STRIDE(stride
) |
5152 S_008F04_SWIZZLE_ENABLE(1), 0), "");
5153 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_1
, "");
5154 ring
= LLVMBuildInsertElement(builder
, ring
,
5155 LLVMConstInt(ctx
->i32
, num_records
, 0),
5156 LLVMConstInt(ctx
->i32
, 2, 0), "");
5159 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
5160 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
5161 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
5162 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
5163 S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */
5164 S_008F0C_ADD_TID_ENABLE(1);
5166 if (ctx
->ac
.chip_class
>= GFX10
) {
5167 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
5168 S_008F0C_OOB_SELECT(2) |
5169 S_008F0C_RESOURCE_LEVEL(1);
5171 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
5172 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
) |
5173 S_008F0C_ELEMENT_SIZE(1); /* element_size = 4 (bytes) */
5176 ring
= LLVMBuildInsertElement(builder
, ring
,
5177 LLVMConstInt(ctx
->i32
, rsrc3
, false),
5178 LLVMConstInt(ctx
->i32
, 3, 0), "");
5180 ctx
->gsvs_ring
[stream
] = ring
;
5182 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
5183 ctx
->tess_offchip_ring
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TES
);
5187 static void si_llvm_emit_polygon_stipple(struct si_shader_context
*ctx
,
5188 LLVMValueRef param_rw_buffers
,
5189 unsigned param_pos_fixed_pt
)
5191 LLVMBuilderRef builder
= ctx
->ac
.builder
;
5192 LLVMValueRef slot
, desc
, offset
, row
, bit
, address
[2];
5194 /* Use the fixed-point gl_FragCoord input.
5195 * Since the stipple pattern is 32x32 and it repeats, just get 5 bits
5196 * per coordinate to get the repeating effect.
5198 address
[0] = si_unpack_param(ctx
, param_pos_fixed_pt
, 0, 5);
5199 address
[1] = si_unpack_param(ctx
, param_pos_fixed_pt
, 16, 5);
5201 /* Load the buffer descriptor. */
5202 slot
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_POLY_STIPPLE
, 0);
5203 desc
= ac_build_load_to_sgpr(&ctx
->ac
, param_rw_buffers
, slot
);
5205 /* The stipple pattern is 32x32, each row has 32 bits. */
5206 offset
= LLVMBuildMul(builder
, address
[1],
5207 LLVMConstInt(ctx
->i32
, 4, 0), "");
5208 row
= buffer_load_const(ctx
, desc
, offset
);
5209 row
= ac_to_integer(&ctx
->ac
, row
);
5210 bit
= LLVMBuildLShr(builder
, row
, address
[0], "");
5211 bit
= LLVMBuildTrunc(builder
, bit
, ctx
->i1
, "");
5212 ac_build_kill_if_false(&ctx
->ac
, bit
);
5215 /* For the UMR disassembler. */
5216 #define DEBUGGER_END_OF_CODE_MARKER 0xbf9f0000 /* invalid instruction */
5217 #define DEBUGGER_NUM_MARKERS 5
5219 static bool si_shader_binary_open(struct si_screen
*screen
,
5220 struct si_shader
*shader
,
5221 struct ac_rtld_binary
*rtld
)
5223 const struct si_shader_selector
*sel
= shader
->selector
;
5224 const char *part_elfs
[5];
5225 size_t part_sizes
[5];
5226 unsigned num_parts
= 0;
5228 #define add_part(shader_or_part) \
5229 if (shader_or_part) { \
5230 part_elfs[num_parts] = (shader_or_part)->binary.elf_buffer; \
5231 part_sizes[num_parts] = (shader_or_part)->binary.elf_size; \
5235 add_part(shader
->prolog
);
5236 add_part(shader
->previous_stage
);
5237 add_part(shader
->prolog2
);
5239 add_part(shader
->epilog
);
5243 struct ac_rtld_symbol lds_symbols
[2];
5244 unsigned num_lds_symbols
= 0;
5246 if (sel
&& screen
->info
.chip_class
>= GFX9
&& !shader
->is_gs_copy_shader
&&
5247 (sel
->type
== PIPE_SHADER_GEOMETRY
|| shader
->key
.as_ngg
)) {
5248 /* We add this symbol even on LLVM <= 8 to ensure that
5249 * shader->config.lds_size is set correctly below.
5251 struct ac_rtld_symbol
*sym
= &lds_symbols
[num_lds_symbols
++];
5252 sym
->name
= "esgs_ring";
5253 sym
->size
= shader
->gs_info
.esgs_ring_size
;
5254 sym
->align
= 64 * 1024;
5257 if (shader
->key
.as_ngg
&& sel
->type
== PIPE_SHADER_GEOMETRY
) {
5258 struct ac_rtld_symbol
*sym
= &lds_symbols
[num_lds_symbols
++];
5259 sym
->name
= "ngg_emit";
5260 sym
->size
= shader
->ngg
.ngg_emit_size
* 4;
5264 bool ok
= ac_rtld_open(rtld
, (struct ac_rtld_open_info
){
5265 .info
= &screen
->info
,
5267 .halt_at_entry
= screen
->options
.halt_shaders
,
5269 .shader_type
= tgsi_processor_to_shader_stage(sel
->type
),
5270 .wave_size
= si_get_shader_wave_size(shader
),
5271 .num_parts
= num_parts
,
5272 .elf_ptrs
= part_elfs
,
5273 .elf_sizes
= part_sizes
,
5274 .num_shared_lds_symbols
= num_lds_symbols
,
5275 .shared_lds_symbols
= lds_symbols
});
5277 if (rtld
->lds_size
> 0) {
5278 unsigned alloc_granularity
= screen
->info
.chip_class
>= GFX7
? 512 : 256;
5279 shader
->config
.lds_size
=
5280 align(rtld
->lds_size
, alloc_granularity
) / alloc_granularity
;
5286 static unsigned si_get_shader_binary_size(struct si_screen
*screen
, struct si_shader
*shader
)
5288 struct ac_rtld_binary rtld
;
5289 si_shader_binary_open(screen
, shader
, &rtld
);
5290 return rtld
.rx_size
;
5293 static bool si_get_external_symbol(void *data
, const char *name
, uint64_t *value
)
5295 uint64_t *scratch_va
= data
;
5297 if (!strcmp(scratch_rsrc_dword0_symbol
, name
)) {
5298 *value
= (uint32_t)*scratch_va
;
5301 if (!strcmp(scratch_rsrc_dword1_symbol
, name
)) {
5302 /* Enable scratch coalescing. */
5303 *value
= S_008F04_BASE_ADDRESS_HI(*scratch_va
>> 32) |
5304 S_008F04_SWIZZLE_ENABLE(1);
5305 if (HAVE_LLVM
< 0x0800) {
5306 /* Old LLVM created an R_ABS32_HI relocation for
5316 bool si_shader_binary_upload(struct si_screen
*sscreen
, struct si_shader
*shader
,
5317 uint64_t scratch_va
)
5319 struct ac_rtld_binary binary
;
5320 if (!si_shader_binary_open(sscreen
, shader
, &binary
))
5323 si_resource_reference(&shader
->bo
, NULL
);
5324 shader
->bo
= si_aligned_buffer_create(&sscreen
->b
,
5325 sscreen
->cpdma_prefetch_writes_memory
?
5326 0 : SI_RESOURCE_FLAG_READ_ONLY
,
5327 PIPE_USAGE_IMMUTABLE
,
5328 align(binary
.rx_size
, SI_CPDMA_ALIGNMENT
),
5334 struct ac_rtld_upload_info u
= {};
5336 u
.get_external_symbol
= si_get_external_symbol
;
5337 u
.cb_data
= &scratch_va
;
5338 u
.rx_va
= shader
->bo
->gpu_address
;
5339 u
.rx_ptr
= sscreen
->ws
->buffer_map(shader
->bo
->buf
, NULL
,
5340 PIPE_TRANSFER_READ_WRITE
|
5341 PIPE_TRANSFER_UNSYNCHRONIZED
|
5342 RADEON_TRANSFER_TEMPORARY
);
5346 bool ok
= ac_rtld_upload(&u
);
5348 sscreen
->ws
->buffer_unmap(shader
->bo
->buf
);
5349 ac_rtld_close(&binary
);
5354 static void si_shader_dump_disassembly(struct si_screen
*screen
,
5355 const struct si_shader_binary
*binary
,
5356 enum pipe_shader_type shader_type
,
5358 struct pipe_debug_callback
*debug
,
5359 const char *name
, FILE *file
)
5361 struct ac_rtld_binary rtld_binary
;
5363 if (!ac_rtld_open(&rtld_binary
, (struct ac_rtld_open_info
){
5364 .info
= &screen
->info
,
5365 .shader_type
= tgsi_processor_to_shader_stage(shader_type
),
5366 .wave_size
= wave_size
,
5368 .elf_ptrs
= &binary
->elf_buffer
,
5369 .elf_sizes
= &binary
->elf_size
}))
5375 if (!ac_rtld_get_section_by_name(&rtld_binary
, ".AMDGPU.disasm", &disasm
, &nbytes
))
5378 if (nbytes
> INT_MAX
)
5381 if (debug
&& debug
->debug_message
) {
5382 /* Very long debug messages are cut off, so send the
5383 * disassembly one line at a time. This causes more
5384 * overhead, but on the plus side it simplifies
5385 * parsing of resulting logs.
5387 pipe_debug_message(debug
, SHADER_INFO
,
5388 "Shader Disassembly Begin");
5391 while (line
< nbytes
) {
5392 int count
= nbytes
- line
;
5393 const char *nl
= memchr(disasm
+ line
, '\n', nbytes
- line
);
5395 count
= nl
- (disasm
+ line
);
5398 pipe_debug_message(debug
, SHADER_INFO
,
5399 "%.*s", count
, disasm
+ line
);
5405 pipe_debug_message(debug
, SHADER_INFO
,
5406 "Shader Disassembly End");
5410 fprintf(file
, "Shader %s disassembly:\n", name
);
5411 fprintf(file
, "%*s", (int)nbytes
, disasm
);
5415 ac_rtld_close(&rtld_binary
);
5418 static void si_calculate_max_simd_waves(struct si_shader
*shader
)
5420 struct si_screen
*sscreen
= shader
->selector
->screen
;
5421 struct ac_shader_config
*conf
= &shader
->config
;
5422 unsigned num_inputs
= shader
->selector
->info
.num_inputs
;
5423 unsigned lds_increment
= sscreen
->info
.chip_class
>= GFX7
? 512 : 256;
5424 unsigned lds_per_wave
= 0;
5425 unsigned max_simd_waves
;
5427 max_simd_waves
= ac_get_max_simd_waves(sscreen
->info
.family
);
5429 /* Compute LDS usage for PS. */
5430 switch (shader
->selector
->type
) {
5431 case PIPE_SHADER_FRAGMENT
:
5432 /* The minimum usage per wave is (num_inputs * 48). The maximum
5433 * usage is (num_inputs * 48 * 16).
5434 * We can get anything in between and it varies between waves.
5436 * The 48 bytes per input for a single primitive is equal to
5437 * 4 bytes/component * 4 components/input * 3 points.
5439 * Other stages don't know the size at compile time or don't
5440 * allocate LDS per wave, but instead they do it per thread group.
5442 lds_per_wave
= conf
->lds_size
* lds_increment
+
5443 align(num_inputs
* 48, lds_increment
);
5445 case PIPE_SHADER_COMPUTE
:
5446 if (shader
->selector
) {
5447 unsigned max_workgroup_size
=
5448 si_get_max_workgroup_size(shader
);
5449 lds_per_wave
= (conf
->lds_size
* lds_increment
) /
5450 DIV_ROUND_UP(max_workgroup_size
,
5451 sscreen
->compute_wave_size
);
5457 /* Compute the per-SIMD wave counts. */
5458 if (conf
->num_sgprs
) {
5460 MIN2(max_simd_waves
,
5461 ac_get_num_physical_sgprs(sscreen
->info
.chip_class
) / conf
->num_sgprs
);
5464 if (conf
->num_vgprs
)
5465 max_simd_waves
= MIN2(max_simd_waves
, 256 / conf
->num_vgprs
);
5467 /* LDS is 64KB per CU (4 SIMDs), which is 16KB per SIMD (usage above
5468 * 16KB makes some SIMDs unoccupied). */
5470 max_simd_waves
= MIN2(max_simd_waves
, 16384 / lds_per_wave
);
5472 shader
->info
.max_simd_waves
= max_simd_waves
;
5475 void si_shader_dump_stats_for_shader_db(struct si_screen
*screen
,
5476 struct si_shader
*shader
,
5477 struct pipe_debug_callback
*debug
)
5479 const struct ac_shader_config
*conf
= &shader
->config
;
5481 if (screen
->options
.debug_disassembly
)
5482 si_shader_dump_disassembly(screen
, &shader
->binary
,
5483 shader
->selector
->type
,
5484 si_get_shader_wave_size(shader
),
5485 debug
, "main", NULL
);
5487 pipe_debug_message(debug
, SHADER_INFO
,
5488 "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d "
5489 "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d "
5490 "Spilled VGPRs: %d PrivMem VGPRs: %d",
5491 conf
->num_sgprs
, conf
->num_vgprs
,
5492 si_get_shader_binary_size(screen
, shader
),
5493 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5494 shader
->info
.max_simd_waves
, conf
->spilled_sgprs
,
5495 conf
->spilled_vgprs
, shader
->info
.private_mem_vgprs
);
5498 static void si_shader_dump_stats(struct si_screen
*sscreen
,
5499 struct si_shader
*shader
,
5501 bool check_debug_option
)
5503 const struct ac_shader_config
*conf
= &shader
->config
;
5505 if (!check_debug_option
||
5506 si_can_dump_shader(sscreen
, shader
->selector
->type
)) {
5507 if (shader
->selector
->type
== PIPE_SHADER_FRAGMENT
) {
5508 fprintf(file
, "*** SHADER CONFIG ***\n"
5509 "SPI_PS_INPUT_ADDR = 0x%04x\n"
5510 "SPI_PS_INPUT_ENA = 0x%04x\n",
5511 conf
->spi_ps_input_addr
, conf
->spi_ps_input_ena
);
5514 fprintf(file
, "*** SHADER STATS ***\n"
5517 "Spilled SGPRs: %d\n"
5518 "Spilled VGPRs: %d\n"
5519 "Private memory VGPRs: %d\n"
5520 "Code Size: %d bytes\n"
5522 "Scratch: %d bytes per wave\n"
5524 "********************\n\n\n",
5525 conf
->num_sgprs
, conf
->num_vgprs
,
5526 conf
->spilled_sgprs
, conf
->spilled_vgprs
,
5527 shader
->info
.private_mem_vgprs
,
5528 si_get_shader_binary_size(sscreen
, shader
),
5529 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5530 shader
->info
.max_simd_waves
);
5534 const char *si_get_shader_name(const struct si_shader
*shader
)
5536 switch (shader
->selector
->type
) {
5537 case PIPE_SHADER_VERTEX
:
5538 if (shader
->key
.as_es
)
5539 return "Vertex Shader as ES";
5540 else if (shader
->key
.as_ls
)
5541 return "Vertex Shader as LS";
5542 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
5543 return "Vertex Shader as Primitive Discard CS";
5544 else if (shader
->key
.as_ngg
)
5545 return "Vertex Shader as ESGS";
5547 return "Vertex Shader as VS";
5548 case PIPE_SHADER_TESS_CTRL
:
5549 return "Tessellation Control Shader";
5550 case PIPE_SHADER_TESS_EVAL
:
5551 if (shader
->key
.as_es
)
5552 return "Tessellation Evaluation Shader as ES";
5553 else if (shader
->key
.as_ngg
)
5554 return "Tessellation Evaluation Shader as ESGS";
5556 return "Tessellation Evaluation Shader as VS";
5557 case PIPE_SHADER_GEOMETRY
:
5558 if (shader
->is_gs_copy_shader
)
5559 return "GS Copy Shader as VS";
5561 return "Geometry Shader";
5562 case PIPE_SHADER_FRAGMENT
:
5563 return "Pixel Shader";
5564 case PIPE_SHADER_COMPUTE
:
5565 return "Compute Shader";
5567 return "Unknown Shader";
5571 void si_shader_dump(struct si_screen
*sscreen
, struct si_shader
*shader
,
5572 struct pipe_debug_callback
*debug
,
5573 FILE *file
, bool check_debug_option
)
5575 enum pipe_shader_type shader_type
= shader
->selector
->type
;
5577 if (!check_debug_option
||
5578 si_can_dump_shader(sscreen
, shader_type
))
5579 si_dump_shader_key(shader
, file
);
5581 if (!check_debug_option
&& shader
->binary
.llvm_ir_string
) {
5582 if (shader
->previous_stage
&&
5583 shader
->previous_stage
->binary
.llvm_ir_string
) {
5584 fprintf(file
, "\n%s - previous stage - LLVM IR:\n\n",
5585 si_get_shader_name(shader
));
5586 fprintf(file
, "%s\n", shader
->previous_stage
->binary
.llvm_ir_string
);
5589 fprintf(file
, "\n%s - main shader part - LLVM IR:\n\n",
5590 si_get_shader_name(shader
));
5591 fprintf(file
, "%s\n", shader
->binary
.llvm_ir_string
);
5594 if (!check_debug_option
||
5595 (si_can_dump_shader(sscreen
, shader_type
) &&
5596 !(sscreen
->debug_flags
& DBG(NO_ASM
)))) {
5597 unsigned wave_size
= si_get_shader_wave_size(shader
);
5599 fprintf(file
, "\n%s:\n", si_get_shader_name(shader
));
5602 si_shader_dump_disassembly(sscreen
, &shader
->prolog
->binary
,
5603 shader_type
, wave_size
, debug
, "prolog", file
);
5604 if (shader
->previous_stage
)
5605 si_shader_dump_disassembly(sscreen
, &shader
->previous_stage
->binary
,
5606 shader_type
, wave_size
, debug
, "previous stage", file
);
5607 if (shader
->prolog2
)
5608 si_shader_dump_disassembly(sscreen
, &shader
->prolog2
->binary
,
5609 shader_type
, wave_size
, debug
, "prolog2", file
);
5611 si_shader_dump_disassembly(sscreen
, &shader
->binary
, shader_type
,
5612 wave_size
, debug
, "main", file
);
5615 si_shader_dump_disassembly(sscreen
, &shader
->epilog
->binary
,
5616 shader_type
, wave_size
, debug
, "epilog", file
);
5617 fprintf(file
, "\n");
5620 si_shader_dump_stats(sscreen
, shader
, file
, check_debug_option
);
5623 static int si_compile_llvm(struct si_screen
*sscreen
,
5624 struct si_shader_binary
*binary
,
5625 struct ac_shader_config
*conf
,
5626 struct ac_llvm_compiler
*compiler
,
5628 struct pipe_debug_callback
*debug
,
5629 enum pipe_shader_type shader_type
,
5632 bool less_optimized
)
5634 unsigned count
= p_atomic_inc_return(&sscreen
->num_compilations
);
5636 if (si_can_dump_shader(sscreen
, shader_type
)) {
5637 fprintf(stderr
, "radeonsi: Compiling shader %d\n", count
);
5639 if (!(sscreen
->debug_flags
& (DBG(NO_IR
) | DBG(PREOPT_IR
)))) {
5640 fprintf(stderr
, "%s LLVM IR:\n\n", name
);
5641 ac_dump_module(mod
);
5642 fprintf(stderr
, "\n");
5646 if (sscreen
->record_llvm_ir
) {
5647 char *ir
= LLVMPrintModuleToString(mod
);
5648 binary
->llvm_ir_string
= strdup(ir
);
5649 LLVMDisposeMessage(ir
);
5652 if (!si_replace_shader(count
, binary
)) {
5653 unsigned r
= si_llvm_compile(mod
, binary
, compiler
, debug
,
5654 less_optimized
, wave_size
);
5659 struct ac_rtld_binary rtld
;
5660 if (!ac_rtld_open(&rtld
, (struct ac_rtld_open_info
){
5661 .info
= &sscreen
->info
,
5662 .shader_type
= tgsi_processor_to_shader_stage(shader_type
),
5663 .wave_size
= wave_size
,
5665 .elf_ptrs
= &binary
->elf_buffer
,
5666 .elf_sizes
= &binary
->elf_size
}))
5669 bool ok
= ac_rtld_read_config(&rtld
, conf
);
5670 ac_rtld_close(&rtld
);
5674 /* Enable 64-bit and 16-bit denormals, because there is no performance
5677 * If denormals are enabled, all floating-point output modifiers are
5680 * Don't enable denormals for 32-bit floats, because:
5681 * - Floating-point output modifiers would be ignored by the hw.
5682 * - Some opcodes don't support denormals, such as v_mad_f32. We would
5683 * have to stop using those.
5684 * - GFX6 & GFX7 would be very slow.
5686 conf
->float_mode
|= V_00B028_FP_64_DENORMS
;
5691 static void si_llvm_build_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
)
5693 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
5694 LLVMBuildRetVoid(ctx
->ac
.builder
);
5696 LLVMBuildRet(ctx
->ac
.builder
, ret
);
5699 /* Generate code for the hardware VS shader stage to go with a geometry shader */
5701 si_generate_gs_copy_shader(struct si_screen
*sscreen
,
5702 struct ac_llvm_compiler
*compiler
,
5703 struct si_shader_selector
*gs_selector
,
5704 struct pipe_debug_callback
*debug
)
5706 struct si_shader_context ctx
;
5707 struct si_shader
*shader
;
5708 LLVMBuilderRef builder
;
5709 struct si_shader_output_values outputs
[SI_MAX_VS_OUTPUTS
];
5710 struct tgsi_shader_info
*gsinfo
= &gs_selector
->info
;
5714 shader
= CALLOC_STRUCT(si_shader
);
5718 /* We can leave the fence as permanently signaled because the GS copy
5719 * shader only becomes visible globally after it has been compiled. */
5720 util_queue_fence_init(&shader
->ready
);
5722 shader
->selector
= gs_selector
;
5723 shader
->is_gs_copy_shader
= true;
5725 si_init_shader_ctx(&ctx
, sscreen
, compiler
,
5726 si_get_wave_size(sscreen
, PIPE_SHADER_VERTEX
, false, false));
5727 ctx
.shader
= shader
;
5728 ctx
.type
= PIPE_SHADER_VERTEX
;
5730 builder
= ctx
.ac
.builder
;
5732 create_function(&ctx
);
5733 preload_ring_buffers(&ctx
);
5735 LLVMValueRef voffset
=
5736 LLVMBuildMul(ctx
.ac
.builder
, ctx
.abi
.vertex_id
,
5737 LLVMConstInt(ctx
.i32
, 4, 0), "");
5739 /* Fetch the vertex stream ID.*/
5740 LLVMValueRef stream_id
;
5742 if (ctx
.ac
.chip_class
<= GFX9
&& gs_selector
->so
.num_outputs
)
5743 stream_id
= si_unpack_param(&ctx
, ctx
.param_streamout_config
, 24, 2);
5745 stream_id
= ctx
.i32_0
;
5747 /* Fill in output information. */
5748 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5749 outputs
[i
].semantic_name
= gsinfo
->output_semantic_name
[i
];
5750 outputs
[i
].semantic_index
= gsinfo
->output_semantic_index
[i
];
5752 for (int chan
= 0; chan
< 4; chan
++) {
5753 outputs
[i
].vertex_stream
[chan
] =
5754 (gsinfo
->output_streams
[i
] >> (2 * chan
)) & 3;
5758 LLVMBasicBlockRef end_bb
;
5759 LLVMValueRef switch_inst
;
5761 end_bb
= LLVMAppendBasicBlockInContext(ctx
.ac
.context
, ctx
.main_fn
, "end");
5762 switch_inst
= LLVMBuildSwitch(builder
, stream_id
, end_bb
, 4);
5764 for (int stream
= 0; stream
< 4; stream
++) {
5765 LLVMBasicBlockRef bb
;
5768 if (!gsinfo
->num_stream_output_components
[stream
])
5771 if (stream
> 0 && !gs_selector
->so
.num_outputs
)
5774 bb
= LLVMInsertBasicBlockInContext(ctx
.ac
.context
, end_bb
, "out");
5775 LLVMAddCase(switch_inst
, LLVMConstInt(ctx
.i32
, stream
, 0), bb
);
5776 LLVMPositionBuilderAtEnd(builder
, bb
);
5778 /* Fetch vertex data from GSVS ring */
5780 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5781 for (unsigned chan
= 0; chan
< 4; chan
++) {
5782 if (!(gsinfo
->output_usagemask
[i
] & (1 << chan
)) ||
5783 outputs
[i
].vertex_stream
[chan
] != stream
) {
5784 outputs
[i
].values
[chan
] = LLVMGetUndef(ctx
.f32
);
5788 LLVMValueRef soffset
= LLVMConstInt(ctx
.i32
,
5789 offset
* gs_selector
->gs_max_out_vertices
* 16 * 4, 0);
5792 outputs
[i
].values
[chan
] =
5793 ac_build_buffer_load(&ctx
.ac
,
5794 ctx
.gsvs_ring
[0], 1,
5796 soffset
, 0, ac_glc
| ac_slc
,
5801 /* Streamout and exports. */
5802 if (ctx
.ac
.chip_class
<= GFX9
&& gs_selector
->so
.num_outputs
) {
5803 si_llvm_emit_streamout(&ctx
, outputs
,
5804 gsinfo
->num_outputs
,
5809 si_llvm_export_vs(&ctx
, outputs
, gsinfo
->num_outputs
);
5811 LLVMBuildBr(builder
, end_bb
);
5814 LLVMPositionBuilderAtEnd(builder
, end_bb
);
5816 LLVMBuildRetVoid(ctx
.ac
.builder
);
5818 ctx
.type
= PIPE_SHADER_GEOMETRY
; /* override for shader dumping */
5819 si_llvm_optimize_module(&ctx
);
5822 if (si_compile_llvm(sscreen
, &ctx
.shader
->binary
,
5823 &ctx
.shader
->config
, ctx
.compiler
,
5825 debug
, PIPE_SHADER_GEOMETRY
, ctx
.ac
.wave_size
,
5826 "GS Copy Shader", false) == 0) {
5827 if (si_can_dump_shader(sscreen
, PIPE_SHADER_GEOMETRY
))
5828 fprintf(stderr
, "GS Copy Shader:\n");
5829 si_shader_dump(sscreen
, ctx
.shader
, debug
, stderr
, true);
5831 if (!ctx
.shader
->config
.scratch_bytes_per_wave
)
5832 ok
= si_shader_binary_upload(sscreen
, ctx
.shader
, 0);
5837 si_llvm_dispose(&ctx
);
5843 si_fix_resource_usage(sscreen
, shader
);
5848 static void si_dump_shader_key_vs(const struct si_shader_key
*key
,
5849 const struct si_vs_prolog_bits
*prolog
,
5850 const char *prefix
, FILE *f
)
5852 fprintf(f
, " %s.instance_divisor_is_one = %u\n",
5853 prefix
, prolog
->instance_divisor_is_one
);
5854 fprintf(f
, " %s.instance_divisor_is_fetched = %u\n",
5855 prefix
, prolog
->instance_divisor_is_fetched
);
5856 fprintf(f
, " %s.unpack_instance_id_from_vertex_id = %u\n",
5857 prefix
, prolog
->unpack_instance_id_from_vertex_id
);
5858 fprintf(f
, " %s.ls_vgpr_fix = %u\n",
5859 prefix
, prolog
->ls_vgpr_fix
);
5861 fprintf(f
, " mono.vs.fetch_opencode = %x\n", key
->mono
.vs_fetch_opencode
);
5862 fprintf(f
, " mono.vs.fix_fetch = {");
5863 for (int i
= 0; i
< SI_MAX_ATTRIBS
; i
++) {
5864 union si_vs_fix_fetch fix
= key
->mono
.vs_fix_fetch
[i
];
5870 fprintf(f
, "%u.%u.%u.%u", fix
.u
.reverse
, fix
.u
.log_size
,
5871 fix
.u
.num_channels_m1
, fix
.u
.format
);
5876 static void si_dump_shader_key(const struct si_shader
*shader
, FILE *f
)
5878 const struct si_shader_key
*key
= &shader
->key
;
5879 enum pipe_shader_type shader_type
= shader
->selector
->type
;
5881 fprintf(f
, "SHADER KEY\n");
5883 switch (shader_type
) {
5884 case PIPE_SHADER_VERTEX
:
5885 si_dump_shader_key_vs(key
, &key
->part
.vs
.prolog
,
5886 "part.vs.prolog", f
);
5887 fprintf(f
, " as_es = %u\n", key
->as_es
);
5888 fprintf(f
, " as_ls = %u\n", key
->as_ls
);
5889 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5890 key
->mono
.u
.vs_export_prim_id
);
5891 fprintf(f
, " opt.vs_as_prim_discard_cs = %u\n",
5892 key
->opt
.vs_as_prim_discard_cs
);
5893 fprintf(f
, " opt.cs_prim_type = %s\n",
5894 tgsi_primitive_names
[key
->opt
.cs_prim_type
]);
5895 fprintf(f
, " opt.cs_indexed = %u\n",
5896 key
->opt
.cs_indexed
);
5897 fprintf(f
, " opt.cs_instancing = %u\n",
5898 key
->opt
.cs_instancing
);
5899 fprintf(f
, " opt.cs_primitive_restart = %u\n",
5900 key
->opt
.cs_primitive_restart
);
5901 fprintf(f
, " opt.cs_provoking_vertex_first = %u\n",
5902 key
->opt
.cs_provoking_vertex_first
);
5903 fprintf(f
, " opt.cs_need_correct_orientation = %u\n",
5904 key
->opt
.cs_need_correct_orientation
);
5905 fprintf(f
, " opt.cs_cull_front = %u\n",
5906 key
->opt
.cs_cull_front
);
5907 fprintf(f
, " opt.cs_cull_back = %u\n",
5908 key
->opt
.cs_cull_back
);
5909 fprintf(f
, " opt.cs_cull_z = %u\n",
5910 key
->opt
.cs_cull_z
);
5911 fprintf(f
, " opt.cs_halfz_clip_space = %u\n",
5912 key
->opt
.cs_halfz_clip_space
);
5915 case PIPE_SHADER_TESS_CTRL
:
5916 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
) {
5917 si_dump_shader_key_vs(key
, &key
->part
.tcs
.ls_prolog
,
5918 "part.tcs.ls_prolog", f
);
5920 fprintf(f
, " part.tcs.epilog.prim_mode = %u\n", key
->part
.tcs
.epilog
.prim_mode
);
5921 fprintf(f
, " mono.u.ff_tcs_inputs_to_copy = 0x%"PRIx64
"\n", key
->mono
.u
.ff_tcs_inputs_to_copy
);
5924 case PIPE_SHADER_TESS_EVAL
:
5925 fprintf(f
, " as_es = %u\n", key
->as_es
);
5926 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5927 key
->mono
.u
.vs_export_prim_id
);
5930 case PIPE_SHADER_GEOMETRY
:
5931 if (shader
->is_gs_copy_shader
)
5934 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
&&
5935 key
->part
.gs
.es
->type
== PIPE_SHADER_VERTEX
) {
5936 si_dump_shader_key_vs(key
, &key
->part
.gs
.vs_prolog
,
5937 "part.gs.vs_prolog", f
);
5939 fprintf(f
, " part.gs.prolog.tri_strip_adj_fix = %u\n", key
->part
.gs
.prolog
.tri_strip_adj_fix
);
5942 case PIPE_SHADER_COMPUTE
:
5945 case PIPE_SHADER_FRAGMENT
:
5946 fprintf(f
, " part.ps.prolog.color_two_side = %u\n", key
->part
.ps
.prolog
.color_two_side
);
5947 fprintf(f
, " part.ps.prolog.flatshade_colors = %u\n", key
->part
.ps
.prolog
.flatshade_colors
);
5948 fprintf(f
, " part.ps.prolog.poly_stipple = %u\n", key
->part
.ps
.prolog
.poly_stipple
);
5949 fprintf(f
, " part.ps.prolog.force_persp_sample_interp = %u\n", key
->part
.ps
.prolog
.force_persp_sample_interp
);
5950 fprintf(f
, " part.ps.prolog.force_linear_sample_interp = %u\n", key
->part
.ps
.prolog
.force_linear_sample_interp
);
5951 fprintf(f
, " part.ps.prolog.force_persp_center_interp = %u\n", key
->part
.ps
.prolog
.force_persp_center_interp
);
5952 fprintf(f
, " part.ps.prolog.force_linear_center_interp = %u\n", key
->part
.ps
.prolog
.force_linear_center_interp
);
5953 fprintf(f
, " part.ps.prolog.bc_optimize_for_persp = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_persp
);
5954 fprintf(f
, " part.ps.prolog.bc_optimize_for_linear = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_linear
);
5955 fprintf(f
, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key
->part
.ps
.epilog
.spi_shader_col_format
);
5956 fprintf(f
, " part.ps.epilog.color_is_int8 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int8
);
5957 fprintf(f
, " part.ps.epilog.color_is_int10 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int10
);
5958 fprintf(f
, " part.ps.epilog.last_cbuf = %u\n", key
->part
.ps
.epilog
.last_cbuf
);
5959 fprintf(f
, " part.ps.epilog.alpha_func = %u\n", key
->part
.ps
.epilog
.alpha_func
);
5960 fprintf(f
, " part.ps.epilog.alpha_to_one = %u\n", key
->part
.ps
.epilog
.alpha_to_one
);
5961 fprintf(f
, " part.ps.epilog.poly_line_smoothing = %u\n", key
->part
.ps
.epilog
.poly_line_smoothing
);
5962 fprintf(f
, " part.ps.epilog.clamp_color = %u\n", key
->part
.ps
.epilog
.clamp_color
);
5969 if ((shader_type
== PIPE_SHADER_GEOMETRY
||
5970 shader_type
== PIPE_SHADER_TESS_EVAL
||
5971 shader_type
== PIPE_SHADER_VERTEX
) &&
5972 !key
->as_es
&& !key
->as_ls
) {
5973 fprintf(f
, " opt.kill_outputs = 0x%"PRIx64
"\n", key
->opt
.kill_outputs
);
5974 fprintf(f
, " opt.clip_disable = %u\n", key
->opt
.clip_disable
);
5978 static void si_init_shader_ctx(struct si_shader_context
*ctx
,
5979 struct si_screen
*sscreen
,
5980 struct ac_llvm_compiler
*compiler
,
5983 struct lp_build_tgsi_context
*bld_base
;
5985 si_llvm_context_init(ctx
, sscreen
, compiler
, wave_size
);
5987 bld_base
= &ctx
->bld_base
;
5988 bld_base
->emit_fetch_funcs
[TGSI_FILE_CONSTANT
] = fetch_constant
;
5990 bld_base
->op_actions
[TGSI_OPCODE_INTERP_CENTROID
].emit
= build_interp_intrinsic
;
5991 bld_base
->op_actions
[TGSI_OPCODE_INTERP_SAMPLE
].emit
= build_interp_intrinsic
;
5992 bld_base
->op_actions
[TGSI_OPCODE_INTERP_OFFSET
].emit
= build_interp_intrinsic
;
5994 bld_base
->op_actions
[TGSI_OPCODE_MEMBAR
].emit
= membar_emit
;
5996 bld_base
->op_actions
[TGSI_OPCODE_CLOCK
].emit
= clock_emit
;
5998 bld_base
->op_actions
[TGSI_OPCODE_DDX
].emit
= si_llvm_emit_ddxy
;
5999 bld_base
->op_actions
[TGSI_OPCODE_DDY
].emit
= si_llvm_emit_ddxy
;
6000 bld_base
->op_actions
[TGSI_OPCODE_DDX_FINE
].emit
= si_llvm_emit_ddxy
;
6001 bld_base
->op_actions
[TGSI_OPCODE_DDY_FINE
].emit
= si_llvm_emit_ddxy
;
6003 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ALL
].emit
= vote_all_emit
;
6004 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ANY
].emit
= vote_any_emit
;
6005 bld_base
->op_actions
[TGSI_OPCODE_VOTE_EQ
].emit
= vote_eq_emit
;
6006 bld_base
->op_actions
[TGSI_OPCODE_BALLOT
].emit
= ballot_emit
;
6007 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].intr_name
= "llvm.amdgcn.readfirstlane";
6008 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].emit
= read_lane_emit
;
6009 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].intr_name
= "llvm.amdgcn.readlane";
6010 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].emit
= read_lane_emit
;
6012 bld_base
->op_actions
[TGSI_OPCODE_EMIT
].emit
= si_tgsi_emit_vertex
;
6013 bld_base
->op_actions
[TGSI_OPCODE_ENDPRIM
].emit
= si_tgsi_emit_primitive
;
6014 bld_base
->op_actions
[TGSI_OPCODE_BARRIER
].emit
= si_llvm_emit_barrier
;
6017 static void si_optimize_vs_outputs(struct si_shader_context
*ctx
)
6019 struct si_shader
*shader
= ctx
->shader
;
6020 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6022 if ((ctx
->type
!= PIPE_SHADER_VERTEX
&&
6023 ctx
->type
!= PIPE_SHADER_TESS_EVAL
) ||
6024 shader
->key
.as_ls
||
6028 ac_optimize_vs_outputs(&ctx
->ac
,
6030 shader
->info
.vs_output_param_offset
,
6032 &shader
->info
.nr_param_exports
);
6035 static void si_init_exec_from_input(struct si_shader_context
*ctx
,
6036 unsigned param
, unsigned bitoffset
)
6038 LLVMValueRef args
[] = {
6039 LLVMGetParam(ctx
->main_fn
, param
),
6040 LLVMConstInt(ctx
->i32
, bitoffset
, 0),
6042 ac_build_intrinsic(&ctx
->ac
,
6043 "llvm.amdgcn.init.exec.from.input",
6044 ctx
->voidt
, args
, 2, AC_FUNC_ATTR_CONVERGENT
);
6047 static bool si_vs_needs_prolog(const struct si_shader_selector
*sel
,
6048 const struct si_vs_prolog_bits
*key
)
6050 /* VGPR initialization fixup for Vega10 and Raven is always done in the
6052 return sel
->vs_needs_prolog
|| key
->ls_vgpr_fix
;
6055 static bool si_compile_tgsi_main(struct si_shader_context
*ctx
)
6057 struct si_shader
*shader
= ctx
->shader
;
6058 struct si_shader_selector
*sel
= shader
->selector
;
6059 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
6061 // TODO clean all this up!
6062 switch (ctx
->type
) {
6063 case PIPE_SHADER_VERTEX
:
6064 ctx
->load_input
= declare_input_vs
;
6065 if (shader
->key
.as_ls
)
6066 ctx
->abi
.emit_outputs
= si_llvm_emit_ls_epilogue
;
6067 else if (shader
->key
.as_es
)
6068 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
6069 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
6070 ctx
->abi
.emit_outputs
= si_llvm_emit_prim_discard_cs_epilogue
;
6071 else if (shader
->key
.as_ngg
)
6072 ctx
->abi
.emit_outputs
= gfx10_emit_ngg_epilogue
;
6074 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
6075 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
6076 ctx
->abi
.load_base_vertex
= get_base_vertex
;
6078 case PIPE_SHADER_TESS_CTRL
:
6079 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tcs
;
6080 ctx
->abi
.load_tess_varyings
= si_nir_load_tcs_varyings
;
6081 bld_base
->emit_fetch_funcs
[TGSI_FILE_OUTPUT
] = fetch_output_tcs
;
6082 bld_base
->emit_store
= store_output_tcs
;
6083 ctx
->abi
.store_tcs_outputs
= si_nir_store_output_tcs
;
6084 ctx
->abi
.emit_outputs
= si_llvm_emit_tcs_epilogue
;
6085 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
6086 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
6088 case PIPE_SHADER_TESS_EVAL
:
6089 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tes
;
6090 ctx
->abi
.load_tess_varyings
= si_nir_load_input_tes
;
6091 ctx
->abi
.load_tess_coord
= si_load_tess_coord
;
6092 ctx
->abi
.load_tess_level
= si_load_tess_level
;
6093 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
6094 if (shader
->key
.as_es
)
6095 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
6096 else if (shader
->key
.as_ngg
)
6097 ctx
->abi
.emit_outputs
= gfx10_emit_ngg_epilogue
;
6099 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
6100 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
6102 case PIPE_SHADER_GEOMETRY
:
6103 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_gs
;
6104 ctx
->abi
.load_inputs
= si_nir_load_input_gs
;
6105 ctx
->abi
.emit_vertex
= si_llvm_emit_vertex
;
6106 ctx
->abi
.emit_primitive
= si_llvm_emit_primitive
;
6107 ctx
->abi
.emit_outputs
= si_llvm_emit_gs_epilogue
;
6108 bld_base
->emit_epilogue
= si_tgsi_emit_gs_epilogue
;
6110 case PIPE_SHADER_FRAGMENT
:
6111 ctx
->load_input
= declare_input_fs
;
6112 ctx
->abi
.emit_outputs
= si_llvm_return_fs_outputs
;
6113 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
6114 ctx
->abi
.lookup_interp_param
= si_nir_lookup_interp_param
;
6115 ctx
->abi
.load_sample_position
= load_sample_position
;
6116 ctx
->abi
.load_sample_mask_in
= load_sample_mask_in
;
6117 ctx
->abi
.emit_fbfetch
= si_nir_emit_fbfetch
;
6118 ctx
->abi
.emit_kill
= si_llvm_emit_kill
;
6120 case PIPE_SHADER_COMPUTE
:
6121 ctx
->abi
.load_local_group_size
= get_block_size
;
6124 assert(!"Unsupported shader type");
6128 ctx
->abi
.load_ubo
= load_ubo
;
6129 ctx
->abi
.load_ssbo
= load_ssbo
;
6131 create_function(ctx
);
6132 preload_ring_buffers(ctx
);
6134 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&&
6135 sel
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
6136 for (unsigned i
= 0; i
< 6; i
++) {
6137 ctx
->invoc0_tess_factors
[i
] =
6138 ac_build_alloca_undef(&ctx
->ac
, ctx
->i32
, "");
6142 if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
6143 for (unsigned i
= 0; i
< 4; i
++) {
6144 ctx
->gs_next_vertex
[i
] =
6145 ac_build_alloca(&ctx
->ac
, ctx
->i32
, "");
6147 if (shader
->key
.as_ngg
) {
6148 for (unsigned i
= 0; i
< 4; ++i
) {
6149 ctx
->gs_curprim_verts
[i
] =
6150 ac_build_alloca(&ctx
->ac
, ctx
->ac
.i32
, "");
6151 ctx
->gs_generated_prims
[i
] =
6152 ac_build_alloca(&ctx
->ac
, ctx
->ac
.i32
, "");
6155 unsigned scratch_size
= 8;
6156 if (sel
->so
.num_outputs
)
6159 LLVMTypeRef ai32
= LLVMArrayType(ctx
->i32
, scratch_size
);
6160 ctx
->gs_ngg_scratch
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
6161 ai32
, "ngg_scratch", AC_ADDR_SPACE_LDS
);
6162 LLVMSetInitializer(ctx
->gs_ngg_scratch
, LLVMGetUndef(ai32
));
6163 LLVMSetAlignment(ctx
->gs_ngg_scratch
, 4);
6165 ctx
->gs_ngg_emit
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
6166 LLVMArrayType(ctx
->i32
, 0), "ngg_emit", AC_ADDR_SPACE_LDS
);
6167 LLVMSetLinkage(ctx
->gs_ngg_emit
, LLVMExternalLinkage
);
6168 LLVMSetAlignment(ctx
->gs_ngg_emit
, 4);
6172 if (ctx
->type
!= PIPE_SHADER_GEOMETRY
&&
6173 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)) {
6174 /* Unconditionally declare scratch space base for streamout and
6175 * vertex compaction. Whether space is actually allocated is
6176 * determined during linking / PM4 creation.
6178 * Add an extra dword per vertex to ensure an odd stride, which
6179 * avoids bank conflicts for SoA accesses.
6181 declare_esgs_ring(ctx
);
6183 /* This is really only needed when streamout and / or vertex
6184 * compaction is enabled.
6186 LLVMTypeRef asi32
= LLVMArrayType(ctx
->i32
, 8);
6187 ctx
->gs_ngg_scratch
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
6188 asi32
, "ngg_scratch", AC_ADDR_SPACE_LDS
);
6189 LLVMSetInitializer(ctx
->gs_ngg_scratch
, LLVMGetUndef(asi32
));
6190 LLVMSetAlignment(ctx
->gs_ngg_scratch
, 4);
6193 /* For GFX9 merged shaders:
6194 * - Set EXEC for the first shader. If the prolog is present, set
6195 * EXEC there instead.
6196 * - Add a barrier before the second shader.
6197 * - In the second shader, reset EXEC to ~0 and wrap the main part in
6198 * an if-statement. This is required for correctness in geometry
6199 * shaders, to ensure that empty GS waves do not send GS_EMIT and
6202 * For monolithic merged shaders, the first shader is wrapped in an
6203 * if-block together with its prolog in si_build_wrapper_function.
6205 * NGG vertex and tess eval shaders running as the last
6206 * vertex/geometry stage handle execution explicitly using
6209 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6210 if (!shader
->is_monolithic
&&
6211 sel
->info
.num_instructions
> 1 && /* not empty shader */
6212 (shader
->key
.as_es
|| shader
->key
.as_ls
) &&
6213 (ctx
->type
== PIPE_SHADER_TESS_EVAL
||
6214 (ctx
->type
== PIPE_SHADER_VERTEX
&&
6215 !si_vs_needs_prolog(sel
, &shader
->key
.part
.vs
.prolog
)))) {
6216 si_init_exec_from_input(ctx
,
6217 ctx
->param_merged_wave_info
, 0);
6218 } else if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
6219 ctx
->type
== PIPE_SHADER_GEOMETRY
||
6220 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)) {
6221 LLVMValueRef num_threads
;
6222 bool nested_barrier
;
6224 if (!shader
->is_monolithic
||
6225 (ctx
->type
== PIPE_SHADER_TESS_EVAL
&&
6226 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)))
6227 ac_init_exec_full_mask(&ctx
->ac
);
6229 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
6230 ctx
->type
== PIPE_SHADER_GEOMETRY
) {
6231 if (ctx
->type
== PIPE_SHADER_GEOMETRY
&& shader
->key
.as_ngg
) {
6232 gfx10_ngg_gs_emit_prologue(ctx
);
6233 nested_barrier
= false;
6235 nested_barrier
= true;
6238 /* Number of patches / primitives */
6239 num_threads
= si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 8, 8);
6241 /* Number of vertices */
6242 num_threads
= si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 0, 8);
6243 nested_barrier
= false;
6247 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
6248 ac_get_thread_id(&ctx
->ac
), num_threads
, "");
6250 ctx
->merged_wrap_if_entry_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
6251 ctx
->merged_wrap_if_label
= 11500;
6252 ac_build_ifcc(&ctx
->ac
, ena
, ctx
->merged_wrap_if_label
);
6254 if (nested_barrier
) {
6255 /* Execute a barrier before the second shader in
6258 * Execute the barrier inside the conditional block,
6259 * so that empty waves can jump directly to s_endpgm,
6260 * which will also signal the barrier.
6262 * This is possible in gfx9, because an empty wave
6263 * for the second shader does not participate in
6264 * the epilogue. With NGG, empty waves may still
6265 * be required to export data (e.g. GS output vertices),
6266 * so we cannot let them exit early.
6268 * If the shader is TCS and the TCS epilog is present
6269 * and contains a barrier, it will wait there and then
6272 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
6277 if (sel
->force_correct_derivs_after_kill
) {
6278 ctx
->postponed_kill
= ac_build_alloca_undef(&ctx
->ac
, ctx
->i1
, "");
6279 /* true = don't kill. */
6280 LLVMBuildStore(ctx
->ac
.builder
, ctx
->i1true
,
6281 ctx
->postponed_kill
);
6285 if (!lp_build_tgsi_llvm(bld_base
, sel
->tokens
)) {
6286 fprintf(stderr
, "Failed to translate shader from TGSI to LLVM\n");
6290 if (!si_nir_build_llvm(ctx
, sel
->nir
)) {
6291 fprintf(stderr
, "Failed to translate shader from NIR to LLVM\n");
6296 si_llvm_build_ret(ctx
, ctx
->return_value
);
6301 * Compute the VS prolog key, which contains all the information needed to
6302 * build the VS prolog function, and set shader->info bits where needed.
6304 * \param info Shader info of the vertex shader.
6305 * \param num_input_sgprs Number of input SGPRs for the vertex shader.
6306 * \param prolog_key Key of the VS prolog
6307 * \param shader_out The vertex shader, or the next shader if merging LS+HS or ES+GS.
6308 * \param key Output shader part key.
6310 static void si_get_vs_prolog_key(const struct tgsi_shader_info
*info
,
6311 unsigned num_input_sgprs
,
6312 const struct si_vs_prolog_bits
*prolog_key
,
6313 struct si_shader
*shader_out
,
6314 union si_shader_part_key
*key
)
6316 memset(key
, 0, sizeof(*key
));
6317 key
->vs_prolog
.states
= *prolog_key
;
6318 key
->vs_prolog
.num_input_sgprs
= num_input_sgprs
;
6319 key
->vs_prolog
.last_input
= MAX2(1, info
->num_inputs
) - 1;
6320 key
->vs_prolog
.as_ls
= shader_out
->key
.as_ls
;
6321 key
->vs_prolog
.as_es
= shader_out
->key
.as_es
;
6322 key
->vs_prolog
.as_ngg
= shader_out
->key
.as_ngg
;
6324 if (shader_out
->selector
->type
== PIPE_SHADER_TESS_CTRL
) {
6325 key
->vs_prolog
.as_ls
= 1;
6326 key
->vs_prolog
.num_merged_next_stage_vgprs
= 2;
6327 } else if (shader_out
->selector
->type
== PIPE_SHADER_GEOMETRY
) {
6328 key
->vs_prolog
.as_es
= 1;
6329 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
6330 } else if (shader_out
->key
.as_ngg
) {
6331 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
6334 /* Enable loading the InstanceID VGPR. */
6335 uint16_t input_mask
= u_bit_consecutive(0, info
->num_inputs
);
6337 if ((key
->vs_prolog
.states
.instance_divisor_is_one
|
6338 key
->vs_prolog
.states
.instance_divisor_is_fetched
) & input_mask
)
6339 shader_out
->info
.uses_instanceid
= true;
6343 * Compute the PS prolog key, which contains all the information needed to
6344 * build the PS prolog function, and set related bits in shader->config.
6346 static void si_get_ps_prolog_key(struct si_shader
*shader
,
6347 union si_shader_part_key
*key
,
6348 bool separate_prolog
)
6350 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6352 memset(key
, 0, sizeof(*key
));
6353 key
->ps_prolog
.states
= shader
->key
.part
.ps
.prolog
;
6354 key
->ps_prolog
.colors_read
= info
->colors_read
;
6355 key
->ps_prolog
.num_input_sgprs
= shader
->info
.num_input_sgprs
;
6356 key
->ps_prolog
.num_input_vgprs
= shader
->info
.num_input_vgprs
;
6357 key
->ps_prolog
.wqm
= info
->uses_derivatives
&&
6358 (key
->ps_prolog
.colors_read
||
6359 key
->ps_prolog
.states
.force_persp_sample_interp
||
6360 key
->ps_prolog
.states
.force_linear_sample_interp
||
6361 key
->ps_prolog
.states
.force_persp_center_interp
||
6362 key
->ps_prolog
.states
.force_linear_center_interp
||
6363 key
->ps_prolog
.states
.bc_optimize_for_persp
||
6364 key
->ps_prolog
.states
.bc_optimize_for_linear
);
6365 key
->ps_prolog
.ancillary_vgpr_index
= shader
->info
.ancillary_vgpr_index
;
6367 if (info
->colors_read
) {
6368 unsigned *color
= shader
->selector
->color_attr_index
;
6370 if (shader
->key
.part
.ps
.prolog
.color_two_side
) {
6371 /* BCOLORs are stored after the last input. */
6372 key
->ps_prolog
.num_interp_inputs
= info
->num_inputs
;
6373 key
->ps_prolog
.face_vgpr_index
= shader
->info
.face_vgpr_index
;
6374 if (separate_prolog
)
6375 shader
->config
.spi_ps_input_ena
|= S_0286CC_FRONT_FACE_ENA(1);
6378 for (unsigned i
= 0; i
< 2; i
++) {
6379 unsigned interp
= info
->input_interpolate
[color
[i
]];
6380 unsigned location
= info
->input_interpolate_loc
[color
[i
]];
6382 if (!(info
->colors_read
& (0xf << i
*4)))
6385 key
->ps_prolog
.color_attr_index
[i
] = color
[i
];
6387 if (shader
->key
.part
.ps
.prolog
.flatshade_colors
&&
6388 interp
== TGSI_INTERPOLATE_COLOR
)
6389 interp
= TGSI_INTERPOLATE_CONSTANT
;
6392 case TGSI_INTERPOLATE_CONSTANT
:
6393 key
->ps_prolog
.color_interp_vgpr_index
[i
] = -1;
6395 case TGSI_INTERPOLATE_PERSPECTIVE
:
6396 case TGSI_INTERPOLATE_COLOR
:
6397 /* Force the interpolation location for colors here. */
6398 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
)
6399 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
6400 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
)
6401 location
= TGSI_INTERPOLATE_LOC_CENTER
;
6404 case TGSI_INTERPOLATE_LOC_SAMPLE
:
6405 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 0;
6406 if (separate_prolog
) {
6407 shader
->config
.spi_ps_input_ena
|=
6408 S_0286CC_PERSP_SAMPLE_ENA(1);
6411 case TGSI_INTERPOLATE_LOC_CENTER
:
6412 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 2;
6413 if (separate_prolog
) {
6414 shader
->config
.spi_ps_input_ena
|=
6415 S_0286CC_PERSP_CENTER_ENA(1);
6418 case TGSI_INTERPOLATE_LOC_CENTROID
:
6419 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 4;
6420 if (separate_prolog
) {
6421 shader
->config
.spi_ps_input_ena
|=
6422 S_0286CC_PERSP_CENTROID_ENA(1);
6429 case TGSI_INTERPOLATE_LINEAR
:
6430 /* Force the interpolation location for colors here. */
6431 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
)
6432 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
6433 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
)
6434 location
= TGSI_INTERPOLATE_LOC_CENTER
;
6436 /* The VGPR assignment for non-monolithic shaders
6437 * works because InitialPSInputAddr is set on the
6438 * main shader and PERSP_PULL_MODEL is never used.
6441 case TGSI_INTERPOLATE_LOC_SAMPLE
:
6442 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6443 separate_prolog
? 6 : 9;
6444 if (separate_prolog
) {
6445 shader
->config
.spi_ps_input_ena
|=
6446 S_0286CC_LINEAR_SAMPLE_ENA(1);
6449 case TGSI_INTERPOLATE_LOC_CENTER
:
6450 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6451 separate_prolog
? 8 : 11;
6452 if (separate_prolog
) {
6453 shader
->config
.spi_ps_input_ena
|=
6454 S_0286CC_LINEAR_CENTER_ENA(1);
6457 case TGSI_INTERPOLATE_LOC_CENTROID
:
6458 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6459 separate_prolog
? 10 : 13;
6460 if (separate_prolog
) {
6461 shader
->config
.spi_ps_input_ena
|=
6462 S_0286CC_LINEAR_CENTROID_ENA(1);
6477 * Check whether a PS prolog is required based on the key.
6479 static bool si_need_ps_prolog(const union si_shader_part_key
*key
)
6481 return key
->ps_prolog
.colors_read
||
6482 key
->ps_prolog
.states
.force_persp_sample_interp
||
6483 key
->ps_prolog
.states
.force_linear_sample_interp
||
6484 key
->ps_prolog
.states
.force_persp_center_interp
||
6485 key
->ps_prolog
.states
.force_linear_center_interp
||
6486 key
->ps_prolog
.states
.bc_optimize_for_persp
||
6487 key
->ps_prolog
.states
.bc_optimize_for_linear
||
6488 key
->ps_prolog
.states
.poly_stipple
||
6489 key
->ps_prolog
.states
.samplemask_log_ps_iter
;
6493 * Compute the PS epilog key, which contains all the information needed to
6494 * build the PS epilog function.
6496 static void si_get_ps_epilog_key(struct si_shader
*shader
,
6497 union si_shader_part_key
*key
)
6499 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6500 memset(key
, 0, sizeof(*key
));
6501 key
->ps_epilog
.colors_written
= info
->colors_written
;
6502 key
->ps_epilog
.writes_z
= info
->writes_z
;
6503 key
->ps_epilog
.writes_stencil
= info
->writes_stencil
;
6504 key
->ps_epilog
.writes_samplemask
= info
->writes_samplemask
;
6505 key
->ps_epilog
.states
= shader
->key
.part
.ps
.epilog
;
6509 * Build the GS prolog function. Rotate the input vertices for triangle strips
6512 static void si_build_gs_prolog_function(struct si_shader_context
*ctx
,
6513 union si_shader_part_key
*key
)
6515 unsigned num_sgprs
, num_vgprs
;
6516 struct si_function_info fninfo
;
6517 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6518 LLVMTypeRef returns
[48];
6519 LLVMValueRef func
, ret
;
6521 si_init_function_info(&fninfo
);
6523 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6524 if (key
->gs_prolog
.states
.gfx9_prev_is_vs
)
6525 num_sgprs
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
6527 num_sgprs
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
6528 num_vgprs
= 5; /* ES inputs are not needed by GS */
6530 num_sgprs
= GFX6_GS_NUM_USER_SGPR
+ 2;
6534 for (unsigned i
= 0; i
< num_sgprs
; ++i
) {
6535 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
6536 returns
[i
] = ctx
->i32
;
6539 for (unsigned i
= 0; i
< num_vgprs
; ++i
) {
6540 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
6541 returns
[num_sgprs
+ i
] = ctx
->f32
;
6544 /* Create the function. */
6545 si_create_function(ctx
, "gs_prolog", returns
, num_sgprs
+ num_vgprs
,
6547 func
= ctx
->main_fn
;
6549 /* Set the full EXEC mask for the prolog, because we are only fiddling
6550 * with registers here. The main shader part will set the correct EXEC
6553 if (ctx
->screen
->info
.chip_class
>= GFX9
&& !key
->gs_prolog
.is_monolithic
)
6554 ac_init_exec_full_mask(&ctx
->ac
);
6556 /* Copy inputs to outputs. This should be no-op, as the registers match,
6557 * but it will prevent the compiler from overwriting them unintentionally.
6559 ret
= ctx
->return_value
;
6560 for (unsigned i
= 0; i
< num_sgprs
; i
++) {
6561 LLVMValueRef p
= LLVMGetParam(func
, i
);
6562 ret
= LLVMBuildInsertValue(builder
, ret
, p
, i
, "");
6564 for (unsigned i
= 0; i
< num_vgprs
; i
++) {
6565 LLVMValueRef p
= LLVMGetParam(func
, num_sgprs
+ i
);
6566 p
= ac_to_float(&ctx
->ac
, p
);
6567 ret
= LLVMBuildInsertValue(builder
, ret
, p
, num_sgprs
+ i
, "");
6570 if (key
->gs_prolog
.states
.tri_strip_adj_fix
) {
6571 /* Remap the input vertices for every other primitive. */
6572 const unsigned gfx6_vtx_params
[6] = {
6580 const unsigned gfx9_vtx_params
[3] = {
6585 LLVMValueRef vtx_in
[6], vtx_out
[6];
6586 LLVMValueRef prim_id
, rotate
;
6588 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6589 for (unsigned i
= 0; i
< 3; i
++) {
6590 vtx_in
[i
*2] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 0, 16);
6591 vtx_in
[i
*2+1] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 16, 16);
6594 for (unsigned i
= 0; i
< 6; i
++)
6595 vtx_in
[i
] = LLVMGetParam(func
, gfx6_vtx_params
[i
]);
6598 prim_id
= LLVMGetParam(func
, num_sgprs
+ 2);
6599 rotate
= LLVMBuildTrunc(builder
, prim_id
, ctx
->i1
, "");
6601 for (unsigned i
= 0; i
< 6; ++i
) {
6602 LLVMValueRef base
, rotated
;
6604 rotated
= vtx_in
[(i
+ 4) % 6];
6605 vtx_out
[i
] = LLVMBuildSelect(builder
, rotate
, rotated
, base
, "");
6608 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6609 for (unsigned i
= 0; i
< 3; i
++) {
6610 LLVMValueRef hi
, out
;
6612 hi
= LLVMBuildShl(builder
, vtx_out
[i
*2+1],
6613 LLVMConstInt(ctx
->i32
, 16, 0), "");
6614 out
= LLVMBuildOr(builder
, vtx_out
[i
*2], hi
, "");
6615 out
= ac_to_float(&ctx
->ac
, out
);
6616 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6617 gfx9_vtx_params
[i
], "");
6620 for (unsigned i
= 0; i
< 6; i
++) {
6623 out
= ac_to_float(&ctx
->ac
, vtx_out
[i
]);
6624 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6625 gfx6_vtx_params
[i
], "");
6630 LLVMBuildRet(builder
, ret
);
6634 * Given a list of shader part functions, build a wrapper function that
6635 * runs them in sequence to form a monolithic shader.
6637 static void si_build_wrapper_function(struct si_shader_context
*ctx
,
6638 LLVMValueRef
*parts
,
6641 unsigned next_shader_first_part
)
6643 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6644 /* PS epilog has one arg per color component; gfx9 merged shader
6645 * prologs need to forward 32 user SGPRs.
6647 struct si_function_info fninfo
;
6648 LLVMValueRef initial
[64], out
[64];
6649 LLVMTypeRef function_type
;
6650 unsigned num_first_params
;
6651 unsigned num_out
, initial_num_out
;
6652 MAYBE_UNUSED
unsigned num_out_sgpr
; /* used in debug checks */
6653 MAYBE_UNUSED
unsigned initial_num_out_sgpr
; /* used in debug checks */
6654 unsigned num_sgprs
, num_vgprs
;
6657 si_init_function_info(&fninfo
);
6659 for (unsigned i
= 0; i
< num_parts
; ++i
) {
6660 ac_add_function_attr(ctx
->ac
.context
, parts
[i
], -1,
6661 AC_FUNC_ATTR_ALWAYSINLINE
);
6662 LLVMSetLinkage(parts
[i
], LLVMPrivateLinkage
);
6665 /* The parameters of the wrapper function correspond to those of the
6666 * first part in terms of SGPRs and VGPRs, but we use the types of the
6667 * main part to get the right types. This is relevant for the
6668 * dereferenceable attribute on descriptor table pointers.
6673 function_type
= LLVMGetElementType(LLVMTypeOf(parts
[0]));
6674 num_first_params
= LLVMCountParamTypes(function_type
);
6676 for (unsigned i
= 0; i
< num_first_params
; ++i
) {
6677 LLVMValueRef param
= LLVMGetParam(parts
[0], i
);
6679 if (ac_is_sgpr_param(param
)) {
6680 assert(num_vgprs
== 0);
6681 num_sgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6683 num_vgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6688 while (gprs
< num_sgprs
+ num_vgprs
) {
6689 LLVMValueRef param
= LLVMGetParam(parts
[main_part
], fninfo
.num_params
);
6690 LLVMTypeRef type
= LLVMTypeOf(param
);
6691 unsigned size
= ac_get_type_size(type
) / 4;
6693 add_arg(&fninfo
, gprs
< num_sgprs
? ARG_SGPR
: ARG_VGPR
, type
);
6695 assert(ac_is_sgpr_param(param
) == (gprs
< num_sgprs
));
6696 assert(gprs
+ size
<= num_sgprs
+ num_vgprs
&&
6697 (gprs
>= num_sgprs
|| gprs
+ size
<= num_sgprs
));
6702 /* Prepare the return type. */
6703 unsigned num_returns
= 0;
6704 LLVMTypeRef returns
[32], last_func_type
, return_type
;
6706 last_func_type
= LLVMGetElementType(LLVMTypeOf(parts
[num_parts
- 1]));
6707 return_type
= LLVMGetReturnType(last_func_type
);
6709 switch (LLVMGetTypeKind(return_type
)) {
6710 case LLVMStructTypeKind
:
6711 num_returns
= LLVMCountStructElementTypes(return_type
);
6712 assert(num_returns
<= ARRAY_SIZE(returns
));
6713 LLVMGetStructElementTypes(return_type
, returns
);
6715 case LLVMVoidTypeKind
:
6718 unreachable("unexpected type");
6721 si_create_function(ctx
, "wrapper", returns
, num_returns
, &fninfo
,
6722 si_get_max_workgroup_size(ctx
->shader
));
6724 if (is_merged_shader(ctx
))
6725 ac_init_exec_full_mask(&ctx
->ac
);
6727 /* Record the arguments of the function as if they were an output of
6733 for (unsigned i
= 0; i
< fninfo
.num_params
; ++i
) {
6734 LLVMValueRef param
= LLVMGetParam(ctx
->main_fn
, i
);
6735 LLVMTypeRef param_type
= LLVMTypeOf(param
);
6736 LLVMTypeRef out_type
= i
< fninfo
.num_sgpr_params
? ctx
->i32
: ctx
->f32
;
6737 unsigned size
= ac_get_type_size(param_type
) / 4;
6740 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6741 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i32
, "");
6742 param_type
= ctx
->i32
;
6745 if (param_type
!= out_type
)
6746 param
= LLVMBuildBitCast(builder
, param
, out_type
, "");
6747 out
[num_out
++] = param
;
6749 LLVMTypeRef vector_type
= LLVMVectorType(out_type
, size
);
6751 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6752 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i64
, "");
6753 param_type
= ctx
->i64
;
6756 if (param_type
!= vector_type
)
6757 param
= LLVMBuildBitCast(builder
, param
, vector_type
, "");
6759 for (unsigned j
= 0; j
< size
; ++j
)
6760 out
[num_out
++] = LLVMBuildExtractElement(
6761 builder
, param
, LLVMConstInt(ctx
->i32
, j
, 0), "");
6764 if (i
< fninfo
.num_sgpr_params
)
6765 num_out_sgpr
= num_out
;
6768 memcpy(initial
, out
, sizeof(out
));
6769 initial_num_out
= num_out
;
6770 initial_num_out_sgpr
= num_out_sgpr
;
6772 /* Now chain the parts. */
6773 LLVMValueRef ret
= NULL
;
6774 for (unsigned part
= 0; part
< num_parts
; ++part
) {
6775 LLVMValueRef in
[48];
6776 LLVMTypeRef ret_type
;
6777 unsigned out_idx
= 0;
6778 unsigned num_params
= LLVMCountParams(parts
[part
]);
6780 /* Merged shaders are executed conditionally depending
6781 * on the number of enabled threads passed in the input SGPRs. */
6782 if (is_multi_part_shader(ctx
) && part
== 0) {
6783 LLVMValueRef ena
, count
= initial
[3];
6785 count
= LLVMBuildAnd(builder
, count
,
6786 LLVMConstInt(ctx
->i32
, 0x7f, 0), "");
6787 ena
= LLVMBuildICmp(builder
, LLVMIntULT
,
6788 ac_get_thread_id(&ctx
->ac
), count
, "");
6789 ac_build_ifcc(&ctx
->ac
, ena
, 6506);
6792 /* Derive arguments for the next part from outputs of the
6795 for (unsigned param_idx
= 0; param_idx
< num_params
; ++param_idx
) {
6797 LLVMTypeRef param_type
;
6799 unsigned param_size
;
6800 LLVMValueRef arg
= NULL
;
6802 param
= LLVMGetParam(parts
[part
], param_idx
);
6803 param_type
= LLVMTypeOf(param
);
6804 param_size
= ac_get_type_size(param_type
) / 4;
6805 is_sgpr
= ac_is_sgpr_param(param
);
6808 ac_add_function_attr(ctx
->ac
.context
, parts
[part
],
6809 param_idx
+ 1, AC_FUNC_ATTR_INREG
);
6810 } else if (out_idx
< num_out_sgpr
) {
6811 /* Skip returned SGPRs the current part doesn't
6812 * declare on the input. */
6813 out_idx
= num_out_sgpr
;
6816 assert(out_idx
+ param_size
<= (is_sgpr
? num_out_sgpr
: num_out
));
6818 if (param_size
== 1)
6821 arg
= ac_build_gather_values(&ctx
->ac
, &out
[out_idx
], param_size
);
6823 if (LLVMTypeOf(arg
) != param_type
) {
6824 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6825 if (LLVMGetPointerAddressSpace(param_type
) ==
6826 AC_ADDR_SPACE_CONST_32BIT
) {
6827 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i32
, "");
6828 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
6830 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i64
, "");
6831 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
6834 arg
= LLVMBuildBitCast(builder
, arg
, param_type
, "");
6838 in
[param_idx
] = arg
;
6839 out_idx
+= param_size
;
6842 ret
= ac_build_call(&ctx
->ac
, parts
[part
], in
, num_params
);
6844 if (is_multi_part_shader(ctx
) &&
6845 part
+ 1 == next_shader_first_part
) {
6846 ac_build_endif(&ctx
->ac
, 6506);
6848 /* The second half of the merged shader should use
6849 * the inputs from the toplevel (wrapper) function,
6850 * not the return value from the last call.
6852 * That's because the last call was executed condi-
6853 * tionally, so we can't consume it in the main
6856 memcpy(out
, initial
, sizeof(initial
));
6857 num_out
= initial_num_out
;
6858 num_out_sgpr
= initial_num_out_sgpr
;
6862 /* Extract the returned GPRs. */
6863 ret_type
= LLVMTypeOf(ret
);
6867 if (LLVMGetTypeKind(ret_type
) != LLVMVoidTypeKind
) {
6868 assert(LLVMGetTypeKind(ret_type
) == LLVMStructTypeKind
);
6870 unsigned ret_size
= LLVMCountStructElementTypes(ret_type
);
6872 for (unsigned i
= 0; i
< ret_size
; ++i
) {
6874 LLVMBuildExtractValue(builder
, ret
, i
, "");
6876 assert(num_out
< ARRAY_SIZE(out
));
6877 out
[num_out
++] = val
;
6879 if (LLVMTypeOf(val
) == ctx
->i32
) {
6880 assert(num_out_sgpr
+ 1 == num_out
);
6881 num_out_sgpr
= num_out
;
6887 /* Return the value from the last part. */
6888 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
6889 LLVMBuildRetVoid(builder
);
6891 LLVMBuildRet(builder
, ret
);
6894 static bool si_should_optimize_less(struct ac_llvm_compiler
*compiler
,
6895 struct si_shader_selector
*sel
)
6897 if (!compiler
->low_opt_passes
)
6900 /* Assume a slow CPU. */
6901 assert(!sel
->screen
->info
.has_dedicated_vram
&&
6902 sel
->screen
->info
.chip_class
<= GFX8
);
6904 /* For a crazy dEQP test containing 2597 memory opcodes, mostly
6906 return sel
->type
== PIPE_SHADER_COMPUTE
&&
6907 sel
->info
.num_memory_instructions
> 1000;
6910 int si_compile_tgsi_shader(struct si_screen
*sscreen
,
6911 struct ac_llvm_compiler
*compiler
,
6912 struct si_shader
*shader
,
6913 struct pipe_debug_callback
*debug
)
6915 struct si_shader_selector
*sel
= shader
->selector
;
6916 struct si_shader_context ctx
;
6919 /* Dump TGSI code before doing TGSI->LLVM conversion in case the
6920 * conversion fails. */
6921 if (si_can_dump_shader(sscreen
, sel
->type
) &&
6922 !(sscreen
->debug_flags
& DBG(NO_TGSI
))) {
6924 tgsi_dump(sel
->tokens
, 0);
6926 nir_print_shader(sel
->nir
, stderr
);
6927 si_dump_streamout(&sel
->so
);
6930 si_init_shader_ctx(&ctx
, sscreen
, compiler
, si_get_shader_wave_size(shader
));
6931 si_llvm_context_set_tgsi(&ctx
, shader
);
6933 memset(shader
->info
.vs_output_param_offset
, AC_EXP_PARAM_UNDEFINED
,
6934 sizeof(shader
->info
.vs_output_param_offset
));
6936 shader
->info
.uses_instanceid
= sel
->info
.uses_instanceid
;
6938 if (!si_compile_tgsi_main(&ctx
)) {
6939 si_llvm_dispose(&ctx
);
6943 if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_VERTEX
) {
6944 LLVMValueRef parts
[2];
6945 bool need_prolog
= sel
->vs_needs_prolog
;
6947 parts
[1] = ctx
.main_fn
;
6950 union si_shader_part_key prolog_key
;
6951 si_get_vs_prolog_key(&sel
->info
,
6952 shader
->info
.num_input_sgprs
,
6953 &shader
->key
.part
.vs
.prolog
,
6954 shader
, &prolog_key
);
6955 si_build_vs_prolog_function(&ctx
, &prolog_key
);
6956 parts
[0] = ctx
.main_fn
;
6959 si_build_wrapper_function(&ctx
, parts
+ !need_prolog
,
6960 1 + need_prolog
, need_prolog
, 0);
6962 if (ctx
.shader
->key
.opt
.vs_as_prim_discard_cs
)
6963 si_build_prim_discard_compute_shader(&ctx
);
6964 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_TESS_CTRL
) {
6965 if (sscreen
->info
.chip_class
>= GFX9
) {
6966 struct si_shader_selector
*ls
= shader
->key
.part
.tcs
.ls
;
6967 LLVMValueRef parts
[4];
6968 bool vs_needs_prolog
=
6969 si_vs_needs_prolog(ls
, &shader
->key
.part
.tcs
.ls_prolog
);
6972 parts
[2] = ctx
.main_fn
;
6975 union si_shader_part_key tcs_epilog_key
;
6976 memset(&tcs_epilog_key
, 0, sizeof(tcs_epilog_key
));
6977 tcs_epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6978 si_build_tcs_epilog_function(&ctx
, &tcs_epilog_key
);
6979 parts
[3] = ctx
.main_fn
;
6981 /* VS as LS main part */
6982 struct si_shader shader_ls
= {};
6983 shader_ls
.selector
= ls
;
6984 shader_ls
.key
.as_ls
= 1;
6985 shader_ls
.key
.mono
= shader
->key
.mono
;
6986 shader_ls
.key
.opt
= shader
->key
.opt
;
6987 shader_ls
.is_monolithic
= true;
6988 si_llvm_context_set_tgsi(&ctx
, &shader_ls
);
6990 if (!si_compile_tgsi_main(&ctx
)) {
6991 si_llvm_dispose(&ctx
);
6994 shader
->info
.uses_instanceid
|= ls
->info
.uses_instanceid
;
6995 parts
[1] = ctx
.main_fn
;
6998 if (vs_needs_prolog
) {
6999 union si_shader_part_key vs_prolog_key
;
7000 si_get_vs_prolog_key(&ls
->info
,
7001 shader_ls
.info
.num_input_sgprs
,
7002 &shader
->key
.part
.tcs
.ls_prolog
,
7003 shader
, &vs_prolog_key
);
7004 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
7005 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
7006 parts
[0] = ctx
.main_fn
;
7009 /* Reset the shader context. */
7010 ctx
.shader
= shader
;
7011 ctx
.type
= PIPE_SHADER_TESS_CTRL
;
7013 si_build_wrapper_function(&ctx
,
7014 parts
+ !vs_needs_prolog
,
7015 4 - !vs_needs_prolog
, vs_needs_prolog
,
7016 vs_needs_prolog
? 2 : 1);
7018 LLVMValueRef parts
[2];
7019 union si_shader_part_key epilog_key
;
7021 parts
[0] = ctx
.main_fn
;
7023 memset(&epilog_key
, 0, sizeof(epilog_key
));
7024 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
7025 si_build_tcs_epilog_function(&ctx
, &epilog_key
);
7026 parts
[1] = ctx
.main_fn
;
7028 si_build_wrapper_function(&ctx
, parts
, 2, 0, 0);
7030 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_GEOMETRY
) {
7031 if (ctx
.screen
->info
.chip_class
>= GFX9
) {
7032 struct si_shader_selector
*es
= shader
->key
.part
.gs
.es
;
7033 LLVMValueRef es_prolog
= NULL
;
7034 LLVMValueRef es_main
= NULL
;
7035 LLVMValueRef gs_prolog
= NULL
;
7036 LLVMValueRef gs_main
= ctx
.main_fn
;
7039 union si_shader_part_key gs_prolog_key
;
7040 memset(&gs_prolog_key
, 0, sizeof(gs_prolog_key
));
7041 gs_prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
7042 gs_prolog_key
.gs_prolog
.is_monolithic
= true;
7043 gs_prolog_key
.gs_prolog
.as_ngg
= shader
->key
.as_ngg
;
7044 si_build_gs_prolog_function(&ctx
, &gs_prolog_key
);
7045 gs_prolog
= ctx
.main_fn
;
7048 struct si_shader shader_es
= {};
7049 shader_es
.selector
= es
;
7050 shader_es
.key
.as_es
= 1;
7051 shader_es
.key
.as_ngg
= shader
->key
.as_ngg
;
7052 shader_es
.key
.mono
= shader
->key
.mono
;
7053 shader_es
.key
.opt
= shader
->key
.opt
;
7054 shader_es
.is_monolithic
= true;
7055 si_llvm_context_set_tgsi(&ctx
, &shader_es
);
7057 if (!si_compile_tgsi_main(&ctx
)) {
7058 si_llvm_dispose(&ctx
);
7061 shader
->info
.uses_instanceid
|= es
->info
.uses_instanceid
;
7062 es_main
= ctx
.main_fn
;
7065 if (es
->vs_needs_prolog
) {
7066 union si_shader_part_key vs_prolog_key
;
7067 si_get_vs_prolog_key(&es
->info
,
7068 shader_es
.info
.num_input_sgprs
,
7069 &shader
->key
.part
.gs
.vs_prolog
,
7070 shader
, &vs_prolog_key
);
7071 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
7072 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
7073 es_prolog
= ctx
.main_fn
;
7076 /* Reset the shader context. */
7077 ctx
.shader
= shader
;
7078 ctx
.type
= PIPE_SHADER_GEOMETRY
;
7080 /* Prepare the array of shader parts. */
7081 LLVMValueRef parts
[4];
7082 unsigned num_parts
= 0, main_part
, next_first_part
;
7085 parts
[num_parts
++] = es_prolog
;
7087 parts
[main_part
= num_parts
++] = es_main
;
7088 parts
[next_first_part
= num_parts
++] = gs_prolog
;
7089 parts
[num_parts
++] = gs_main
;
7091 si_build_wrapper_function(&ctx
, parts
, num_parts
,
7092 main_part
, next_first_part
);
7094 LLVMValueRef parts
[2];
7095 union si_shader_part_key prolog_key
;
7097 parts
[1] = ctx
.main_fn
;
7099 memset(&prolog_key
, 0, sizeof(prolog_key
));
7100 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
7101 si_build_gs_prolog_function(&ctx
, &prolog_key
);
7102 parts
[0] = ctx
.main_fn
;
7104 si_build_wrapper_function(&ctx
, parts
, 2, 1, 0);
7106 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_FRAGMENT
) {
7107 LLVMValueRef parts
[3];
7108 union si_shader_part_key prolog_key
;
7109 union si_shader_part_key epilog_key
;
7112 si_get_ps_prolog_key(shader
, &prolog_key
, false);
7113 need_prolog
= si_need_ps_prolog(&prolog_key
);
7115 parts
[need_prolog
? 1 : 0] = ctx
.main_fn
;
7118 si_build_ps_prolog_function(&ctx
, &prolog_key
);
7119 parts
[0] = ctx
.main_fn
;
7122 si_get_ps_epilog_key(shader
, &epilog_key
);
7123 si_build_ps_epilog_function(&ctx
, &epilog_key
);
7124 parts
[need_prolog
? 2 : 1] = ctx
.main_fn
;
7126 si_build_wrapper_function(&ctx
, parts
, need_prolog
? 3 : 2,
7127 need_prolog
? 1 : 0, 0);
7130 si_llvm_optimize_module(&ctx
);
7132 /* Post-optimization transformations and analysis. */
7133 si_optimize_vs_outputs(&ctx
);
7135 if ((debug
&& debug
->debug_message
) ||
7136 si_can_dump_shader(sscreen
, ctx
.type
)) {
7137 ctx
.shader
->info
.private_mem_vgprs
=
7138 ac_count_scratch_private_memory(ctx
.main_fn
);
7141 /* Make sure the input is a pointer and not integer followed by inttoptr. */
7142 assert(LLVMGetTypeKind(LLVMTypeOf(LLVMGetParam(ctx
.main_fn
, 0))) ==
7143 LLVMPointerTypeKind
);
7145 /* Compile to bytecode. */
7146 r
= si_compile_llvm(sscreen
, &shader
->binary
, &shader
->config
, compiler
,
7147 ctx
.ac
.module
, debug
, ctx
.type
, ctx
.ac
.wave_size
,
7148 si_get_shader_name(shader
),
7149 si_should_optimize_less(compiler
, shader
->selector
));
7150 si_llvm_dispose(&ctx
);
7152 fprintf(stderr
, "LLVM failed to compile shader\n");
7156 /* Validate SGPR and VGPR usage for compute to detect compiler bugs.
7157 * LLVM 3.9svn has this bug.
7159 if (sel
->type
== PIPE_SHADER_COMPUTE
) {
7160 unsigned wave_size
= sscreen
->compute_wave_size
;
7161 unsigned max_vgprs
= 256;
7162 unsigned max_sgprs
= sscreen
->info
.chip_class
>= GFX8
? 800 : 512;
7163 unsigned max_sgprs_per_wave
= 128;
7164 unsigned max_block_threads
= si_get_max_workgroup_size(shader
);
7165 unsigned min_waves_per_cu
= DIV_ROUND_UP(max_block_threads
, wave_size
);
7166 unsigned min_waves_per_simd
= DIV_ROUND_UP(min_waves_per_cu
, 4);
7168 max_vgprs
= max_vgprs
/ min_waves_per_simd
;
7169 max_sgprs
= MIN2(max_sgprs
/ min_waves_per_simd
, max_sgprs_per_wave
);
7171 if (shader
->config
.num_sgprs
> max_sgprs
||
7172 shader
->config
.num_vgprs
> max_vgprs
) {
7173 fprintf(stderr
, "LLVM failed to compile a shader correctly: "
7174 "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n",
7175 shader
->config
.num_sgprs
, shader
->config
.num_vgprs
,
7176 max_sgprs
, max_vgprs
);
7178 /* Just terminate the process, because dependent
7179 * shaders can hang due to bad input data, but use
7180 * the env var to allow shader-db to work.
7182 if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false))
7187 /* Add the scratch offset to input SGPRs. */
7188 if (shader
->config
.scratch_bytes_per_wave
&& !is_merged_shader(&ctx
))
7189 shader
->info
.num_input_sgprs
+= 1; /* scratch byte offset */
7191 /* Calculate the number of fragment input VGPRs. */
7192 if (ctx
.type
== PIPE_SHADER_FRAGMENT
) {
7193 shader
->info
.num_input_vgprs
= 0;
7194 shader
->info
.face_vgpr_index
= -1;
7195 shader
->info
.ancillary_vgpr_index
= -1;
7197 if (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
7198 shader
->info
.num_input_vgprs
+= 2;
7199 if (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
7200 shader
->info
.num_input_vgprs
+= 2;
7201 if (G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
7202 shader
->info
.num_input_vgprs
+= 2;
7203 if (G_0286CC_PERSP_PULL_MODEL_ENA(shader
->config
.spi_ps_input_addr
))
7204 shader
->info
.num_input_vgprs
+= 3;
7205 if (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
7206 shader
->info
.num_input_vgprs
+= 2;
7207 if (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
7208 shader
->info
.num_input_vgprs
+= 2;
7209 if (G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
7210 shader
->info
.num_input_vgprs
+= 2;
7211 if (G_0286CC_LINE_STIPPLE_TEX_ENA(shader
->config
.spi_ps_input_addr
))
7212 shader
->info
.num_input_vgprs
+= 1;
7213 if (G_0286CC_POS_X_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
7214 shader
->info
.num_input_vgprs
+= 1;
7215 if (G_0286CC_POS_Y_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
7216 shader
->info
.num_input_vgprs
+= 1;
7217 if (G_0286CC_POS_Z_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
7218 shader
->info
.num_input_vgprs
+= 1;
7219 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
7220 shader
->info
.num_input_vgprs
+= 1;
7221 if (G_0286CC_FRONT_FACE_ENA(shader
->config
.spi_ps_input_addr
)) {
7222 shader
->info
.face_vgpr_index
= shader
->info
.num_input_vgprs
;
7223 shader
->info
.num_input_vgprs
+= 1;
7225 if (G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
)) {
7226 shader
->info
.ancillary_vgpr_index
= shader
->info
.num_input_vgprs
;
7227 shader
->info
.num_input_vgprs
+= 1;
7229 if (G_0286CC_SAMPLE_COVERAGE_ENA(shader
->config
.spi_ps_input_addr
))
7230 shader
->info
.num_input_vgprs
+= 1;
7231 if (G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
))
7232 shader
->info
.num_input_vgprs
+= 1;
7235 si_calculate_max_simd_waves(shader
);
7236 si_shader_dump_stats_for_shader_db(sscreen
, shader
, debug
);
7241 * Create, compile and return a shader part (prolog or epilog).
7243 * \param sscreen screen
7244 * \param list list of shader parts of the same category
7245 * \param type shader type
7246 * \param key shader part key
7247 * \param prolog whether the part being requested is a prolog
7248 * \param tm LLVM target machine
7249 * \param debug debug callback
7250 * \param build the callback responsible for building the main function
7251 * \return non-NULL on success
7253 static struct si_shader_part
*
7254 si_get_shader_part(struct si_screen
*sscreen
,
7255 struct si_shader_part
**list
,
7256 enum pipe_shader_type type
,
7258 union si_shader_part_key
*key
,
7259 struct ac_llvm_compiler
*compiler
,
7260 struct pipe_debug_callback
*debug
,
7261 void (*build
)(struct si_shader_context
*,
7262 union si_shader_part_key
*),
7265 struct si_shader_part
*result
;
7267 mtx_lock(&sscreen
->shader_parts_mutex
);
7269 /* Find existing. */
7270 for (result
= *list
; result
; result
= result
->next
) {
7271 if (memcmp(&result
->key
, key
, sizeof(*key
)) == 0) {
7272 mtx_unlock(&sscreen
->shader_parts_mutex
);
7277 /* Compile a new one. */
7278 result
= CALLOC_STRUCT(si_shader_part
);
7281 struct si_shader shader
= {};
7284 case PIPE_SHADER_VERTEX
:
7285 shader
.key
.as_ls
= key
->vs_prolog
.as_ls
;
7286 shader
.key
.as_es
= key
->vs_prolog
.as_es
;
7287 shader
.key
.as_ngg
= key
->vs_prolog
.as_ngg
;
7289 case PIPE_SHADER_TESS_CTRL
:
7291 shader
.key
.part
.tcs
.epilog
= key
->tcs_epilog
.states
;
7293 case PIPE_SHADER_GEOMETRY
:
7295 shader
.key
.as_ngg
= key
->gs_prolog
.as_ngg
;
7297 case PIPE_SHADER_FRAGMENT
:
7299 shader
.key
.part
.ps
.prolog
= key
->ps_prolog
.states
;
7301 shader
.key
.part
.ps
.epilog
= key
->ps_epilog
.states
;
7304 unreachable("bad shader part");
7307 struct si_shader_context ctx
;
7308 si_init_shader_ctx(&ctx
, sscreen
, compiler
,
7309 si_get_wave_size(sscreen
, type
, shader
.key
.as_ngg
,
7311 ctx
.shader
= &shader
;
7317 si_llvm_optimize_module(&ctx
);
7319 if (si_compile_llvm(sscreen
, &result
->binary
, &result
->config
, compiler
,
7320 ctx
.ac
.module
, debug
, ctx
.type
, ctx
.ac
.wave_size
,
7327 result
->next
= *list
;
7331 si_llvm_dispose(&ctx
);
7332 mtx_unlock(&sscreen
->shader_parts_mutex
);
7336 static LLVMValueRef
si_prolog_get_rw_buffers(struct si_shader_context
*ctx
)
7338 LLVMValueRef ptr
[2], list
;
7339 bool merged_shader
= is_merged_shader(ctx
);
7341 ptr
[0] = LLVMGetParam(ctx
->main_fn
, (merged_shader
? 8 : 0) + SI_SGPR_RW_BUFFERS
);
7342 list
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
[0],
7343 ac_array_in_const32_addr_space(ctx
->v4i32
), "");
7348 * Build the vertex shader prolog function.
7350 * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values).
7351 * All inputs are returned unmodified. The vertex load indices are
7352 * stored after them, which will be used by the API VS for fetching inputs.
7354 * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are:
7359 * (VertexID + BaseVertex),
7360 * (InstanceID + StartInstance),
7361 * (InstanceID / 2 + StartInstance)
7363 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
7364 union si_shader_part_key
*key
)
7366 struct si_function_info fninfo
;
7367 LLVMTypeRef
*returns
;
7368 LLVMValueRef ret
, func
;
7370 unsigned first_vs_vgpr
= key
->vs_prolog
.num_merged_next_stage_vgprs
;
7371 unsigned num_input_vgprs
= key
->vs_prolog
.num_merged_next_stage_vgprs
+ 4;
7372 LLVMValueRef input_vgprs
[9];
7373 unsigned num_all_input_regs
= key
->vs_prolog
.num_input_sgprs
+
7375 unsigned user_sgpr_base
= key
->vs_prolog
.num_merged_next_stage_vgprs
? 8 : 0;
7377 si_init_function_info(&fninfo
);
7379 /* 4 preloaded VGPRs + vertex load indices as prolog outputs */
7380 returns
= alloca((num_all_input_regs
+ key
->vs_prolog
.last_input
+ 1) *
7381 sizeof(LLVMTypeRef
));
7384 /* Declare input and output SGPRs. */
7385 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
7386 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7387 returns
[num_returns
++] = ctx
->i32
;
7390 /* Preloaded VGPRs (outputs must be floats) */
7391 for (i
= 0; i
< num_input_vgprs
; i
++) {
7392 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &input_vgprs
[i
]);
7393 returns
[num_returns
++] = ctx
->f32
;
7396 /* Vertex load indices. */
7397 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++)
7398 returns
[num_returns
++] = ctx
->f32
;
7400 /* Create the function. */
7401 si_create_function(ctx
, "vs_prolog", returns
, num_returns
, &fninfo
, 0);
7402 func
= ctx
->main_fn
;
7404 if (key
->vs_prolog
.num_merged_next_stage_vgprs
) {
7405 if (!key
->vs_prolog
.is_monolithic
)
7406 si_init_exec_from_input(ctx
, 3, 0);
7408 if (key
->vs_prolog
.as_ls
&&
7409 ctx
->screen
->has_ls_vgpr_init_bug
) {
7410 /* If there are no HS threads, SPI loads the LS VGPRs
7411 * starting at VGPR 0. Shift them back to where they
7414 LLVMValueRef has_hs_threads
=
7415 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
7416 si_unpack_param(ctx
, 3, 8, 8),
7419 for (i
= 4; i
> 0; --i
) {
7420 input_vgprs
[i
+ 1] =
7421 LLVMBuildSelect(ctx
->ac
.builder
, has_hs_threads
,
7423 input_vgprs
[i
- 1], "");
7428 unsigned vertex_id_vgpr
= first_vs_vgpr
;
7429 unsigned instance_id_vgpr
=
7430 ctx
->screen
->info
.chip_class
>= GFX10
?
7432 first_vs_vgpr
+ (key
->vs_prolog
.as_ls
? 2 : 1);
7434 ctx
->abi
.vertex_id
= input_vgprs
[vertex_id_vgpr
];
7435 ctx
->abi
.instance_id
= input_vgprs
[instance_id_vgpr
];
7437 /* InstanceID = VertexID >> 16;
7438 * VertexID = VertexID & 0xffff;
7440 if (key
->vs_prolog
.states
.unpack_instance_id_from_vertex_id
) {
7441 ctx
->abi
.instance_id
= LLVMBuildLShr(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
7442 LLVMConstInt(ctx
->i32
, 16, 0), "");
7443 ctx
->abi
.vertex_id
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
7444 LLVMConstInt(ctx
->i32
, 0xffff, 0), "");
7447 /* Copy inputs to outputs. This should be no-op, as the registers match,
7448 * but it will prevent the compiler from overwriting them unintentionally.
7450 ret
= ctx
->return_value
;
7451 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
7452 LLVMValueRef p
= LLVMGetParam(func
, i
);
7453 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
7455 for (i
= 0; i
< num_input_vgprs
; i
++) {
7456 LLVMValueRef p
= input_vgprs
[i
];
7458 if (i
== vertex_id_vgpr
)
7459 p
= ctx
->abi
.vertex_id
;
7460 else if (i
== instance_id_vgpr
)
7461 p
= ctx
->abi
.instance_id
;
7463 p
= ac_to_float(&ctx
->ac
, p
);
7464 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
,
7465 key
->vs_prolog
.num_input_sgprs
+ i
, "");
7468 LLVMValueRef original_ret
= ret
;
7469 bool wrapped
= false;
7470 LLVMBasicBlockRef if_entry_block
= NULL
;
7472 if (key
->vs_prolog
.is_monolithic
&& key
->vs_prolog
.as_ngg
) {
7473 LLVMValueRef num_threads
;
7476 num_threads
= si_unpack_param(ctx
, 3, 0, 8);
7477 ena
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
7478 ac_get_thread_id(&ctx
->ac
), num_threads
, "");
7479 if_entry_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
7480 ac_build_ifcc(&ctx
->ac
, ena
, 11501);
7484 /* Compute vertex load indices from instance divisors. */
7485 LLVMValueRef instance_divisor_constbuf
= NULL
;
7487 if (key
->vs_prolog
.states
.instance_divisor_is_fetched
) {
7488 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
7489 LLVMValueRef buf_index
=
7490 LLVMConstInt(ctx
->i32
, SI_VS_CONST_INSTANCE_DIVISORS
, 0);
7491 instance_divisor_constbuf
=
7492 ac_build_load_to_sgpr(&ctx
->ac
, list
, buf_index
);
7495 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++) {
7496 bool divisor_is_one
=
7497 key
->vs_prolog
.states
.instance_divisor_is_one
& (1u << i
);
7498 bool divisor_is_fetched
=
7499 key
->vs_prolog
.states
.instance_divisor_is_fetched
& (1u << i
);
7500 LLVMValueRef index
= NULL
;
7502 if (divisor_is_one
) {
7503 index
= ctx
->abi
.instance_id
;
7504 } else if (divisor_is_fetched
) {
7505 LLVMValueRef udiv_factors
[4];
7507 for (unsigned j
= 0; j
< 4; j
++) {
7509 buffer_load_const(ctx
, instance_divisor_constbuf
,
7510 LLVMConstInt(ctx
->i32
, i
*16 + j
*4, 0));
7511 udiv_factors
[j
] = ac_to_integer(&ctx
->ac
, udiv_factors
[j
]);
7513 /* The faster NUW version doesn't work when InstanceID == UINT_MAX.
7514 * Such InstanceID might not be achievable in a reasonable time though.
7516 index
= ac_build_fast_udiv_nuw(&ctx
->ac
, ctx
->abi
.instance_id
,
7517 udiv_factors
[0], udiv_factors
[1],
7518 udiv_factors
[2], udiv_factors
[3]);
7521 if (divisor_is_one
|| divisor_is_fetched
) {
7522 /* Add StartInstance. */
7523 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
7524 LLVMGetParam(ctx
->main_fn
, user_sgpr_base
+
7525 SI_SGPR_START_INSTANCE
), "");
7527 /* VertexID + BaseVertex */
7528 index
= LLVMBuildAdd(ctx
->ac
.builder
,
7530 LLVMGetParam(func
, user_sgpr_base
+
7531 SI_SGPR_BASE_VERTEX
), "");
7534 index
= ac_to_float(&ctx
->ac
, index
);
7535 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, index
,
7536 fninfo
.num_params
+ i
, "");
7540 LLVMBasicBlockRef bbs
[2] = {
7541 LLVMGetInsertBlock(ctx
->ac
.builder
),
7544 ac_build_endif(&ctx
->ac
, 11501);
7546 LLVMValueRef values
[2] = {
7550 ret
= ac_build_phi(&ctx
->ac
, LLVMTypeOf(ret
), 2, values
, bbs
);
7553 si_llvm_build_ret(ctx
, ret
);
7556 static bool si_get_vs_prolog(struct si_screen
*sscreen
,
7557 struct ac_llvm_compiler
*compiler
,
7558 struct si_shader
*shader
,
7559 struct pipe_debug_callback
*debug
,
7560 struct si_shader
*main_part
,
7561 const struct si_vs_prolog_bits
*key
)
7563 struct si_shader_selector
*vs
= main_part
->selector
;
7565 if (!si_vs_needs_prolog(vs
, key
))
7568 /* Get the prolog. */
7569 union si_shader_part_key prolog_key
;
7570 si_get_vs_prolog_key(&vs
->info
, main_part
->info
.num_input_sgprs
,
7571 key
, shader
, &prolog_key
);
7574 si_get_shader_part(sscreen
, &sscreen
->vs_prologs
,
7575 PIPE_SHADER_VERTEX
, true, &prolog_key
, compiler
,
7576 debug
, si_build_vs_prolog_function
,
7577 "Vertex Shader Prolog");
7578 return shader
->prolog
!= NULL
;
7582 * Select and compile (or reuse) vertex shader parts (prolog & epilog).
7584 static bool si_shader_select_vs_parts(struct si_screen
*sscreen
,
7585 struct ac_llvm_compiler
*compiler
,
7586 struct si_shader
*shader
,
7587 struct pipe_debug_callback
*debug
)
7589 return si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, shader
,
7590 &shader
->key
.part
.vs
.prolog
);
7594 * Compile the TCS epilog function. This writes tesselation factors to memory
7595 * based on the output primitive type of the tesselator (determined by TES).
7597 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
7598 union si_shader_part_key
*key
)
7600 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
7601 struct si_function_info fninfo
;
7604 si_init_function_info(&fninfo
);
7606 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
7607 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7608 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7609 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7610 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* wave info */
7611 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7612 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7613 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7614 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7615 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7616 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7617 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7618 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7619 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7620 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7621 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7622 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7623 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7624 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7625 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7627 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7628 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7629 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7630 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7631 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7632 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7633 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7634 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7635 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7636 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7639 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7640 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7641 unsigned tess_factors_idx
=
7642 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* patch index within the wave (REL_PATCH_ID) */
7643 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* invocation ID within the patch */
7644 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* LDS offset where tess factors should be loaded from */
7646 for (unsigned i
= 0; i
< 6; i
++)
7647 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* tess factors */
7649 /* Create the function. */
7650 si_create_function(ctx
, "tcs_epilog", NULL
, 0, &fninfo
,
7651 ctx
->screen
->info
.chip_class
>= GFX7
? 128 : 0);
7652 ac_declare_lds_as_pointer(&ctx
->ac
);
7653 func
= ctx
->main_fn
;
7655 LLVMValueRef invoc0_tess_factors
[6];
7656 for (unsigned i
= 0; i
< 6; i
++)
7657 invoc0_tess_factors
[i
] = LLVMGetParam(func
, tess_factors_idx
+ 3 + i
);
7659 si_write_tess_factors(bld_base
,
7660 LLVMGetParam(func
, tess_factors_idx
),
7661 LLVMGetParam(func
, tess_factors_idx
+ 1),
7662 LLVMGetParam(func
, tess_factors_idx
+ 2),
7663 invoc0_tess_factors
, invoc0_tess_factors
+ 4);
7665 LLVMBuildRetVoid(ctx
->ac
.builder
);
7669 * Select and compile (or reuse) TCS parts (epilog).
7671 static bool si_shader_select_tcs_parts(struct si_screen
*sscreen
,
7672 struct ac_llvm_compiler
*compiler
,
7673 struct si_shader
*shader
,
7674 struct pipe_debug_callback
*debug
)
7676 if (sscreen
->info
.chip_class
>= GFX9
) {
7677 struct si_shader
*ls_main_part
=
7678 shader
->key
.part
.tcs
.ls
->main_shader_part_ls
;
7680 if (!si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, ls_main_part
,
7681 &shader
->key
.part
.tcs
.ls_prolog
))
7684 shader
->previous_stage
= ls_main_part
;
7687 /* Get the epilog. */
7688 union si_shader_part_key epilog_key
;
7689 memset(&epilog_key
, 0, sizeof(epilog_key
));
7690 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
7692 shader
->epilog
= si_get_shader_part(sscreen
, &sscreen
->tcs_epilogs
,
7693 PIPE_SHADER_TESS_CTRL
, false,
7694 &epilog_key
, compiler
, debug
,
7695 si_build_tcs_epilog_function
,
7696 "Tessellation Control Shader Epilog");
7697 return shader
->epilog
!= NULL
;
7701 * Select and compile (or reuse) GS parts (prolog).
7703 static bool si_shader_select_gs_parts(struct si_screen
*sscreen
,
7704 struct ac_llvm_compiler
*compiler
,
7705 struct si_shader
*shader
,
7706 struct pipe_debug_callback
*debug
)
7708 if (sscreen
->info
.chip_class
>= GFX9
) {
7709 struct si_shader
*es_main_part
;
7710 enum pipe_shader_type es_type
= shader
->key
.part
.gs
.es
->type
;
7712 if (es_type
== PIPE_SHADER_TESS_EVAL
&& shader
->key
.as_ngg
)
7713 es_main_part
= shader
->key
.part
.gs
.es
->main_shader_part_ngg_es
;
7715 es_main_part
= shader
->key
.part
.gs
.es
->main_shader_part_es
;
7717 if (es_type
== PIPE_SHADER_VERTEX
&&
7718 !si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, es_main_part
,
7719 &shader
->key
.part
.gs
.vs_prolog
))
7722 shader
->previous_stage
= es_main_part
;
7725 if (!shader
->key
.part
.gs
.prolog
.tri_strip_adj_fix
)
7728 union si_shader_part_key prolog_key
;
7729 memset(&prolog_key
, 0, sizeof(prolog_key
));
7730 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
7731 prolog_key
.gs_prolog
.as_ngg
= shader
->key
.as_ngg
;
7733 shader
->prolog2
= si_get_shader_part(sscreen
, &sscreen
->gs_prologs
,
7734 PIPE_SHADER_GEOMETRY
, true,
7735 &prolog_key
, compiler
, debug
,
7736 si_build_gs_prolog_function
,
7737 "Geometry Shader Prolog");
7738 return shader
->prolog2
!= NULL
;
7742 * Build the pixel shader prolog function. This handles:
7743 * - two-side color selection and interpolation
7744 * - overriding interpolation parameters for the API PS
7745 * - polygon stippling
7747 * All preloaded SGPRs and VGPRs are passed through unmodified unless they are
7748 * overriden by other states. (e.g. per-sample interpolation)
7749 * Interpolated colors are stored after the preloaded VGPRs.
7751 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
7752 union si_shader_part_key
*key
)
7754 struct si_function_info fninfo
;
7755 LLVMValueRef ret
, func
;
7756 int num_returns
, i
, num_color_channels
;
7758 assert(si_need_ps_prolog(key
));
7760 si_init_function_info(&fninfo
);
7762 /* Declare inputs. */
7763 for (i
= 0; i
< key
->ps_prolog
.num_input_sgprs
; i
++)
7764 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7766 for (i
= 0; i
< key
->ps_prolog
.num_input_vgprs
; i
++)
7767 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
7769 /* Declare outputs (same as inputs + add colors if needed) */
7770 num_returns
= fninfo
.num_params
;
7771 num_color_channels
= util_bitcount(key
->ps_prolog
.colors_read
);
7772 for (i
= 0; i
< num_color_channels
; i
++)
7773 fninfo
.types
[num_returns
++] = ctx
->f32
;
7775 /* Create the function. */
7776 si_create_function(ctx
, "ps_prolog", fninfo
.types
, num_returns
,
7778 func
= ctx
->main_fn
;
7780 /* Copy inputs to outputs. This should be no-op, as the registers match,
7781 * but it will prevent the compiler from overwriting them unintentionally.
7783 ret
= ctx
->return_value
;
7784 for (i
= 0; i
< fninfo
.num_params
; i
++) {
7785 LLVMValueRef p
= LLVMGetParam(func
, i
);
7786 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
7789 /* Polygon stippling. */
7790 if (key
->ps_prolog
.states
.poly_stipple
) {
7791 /* POS_FIXED_PT is always last. */
7792 unsigned pos
= key
->ps_prolog
.num_input_sgprs
+
7793 key
->ps_prolog
.num_input_vgprs
- 1;
7794 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
7796 si_llvm_emit_polygon_stipple(ctx
, list
, pos
);
7799 if (key
->ps_prolog
.states
.bc_optimize_for_persp
||
7800 key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7801 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7802 LLVMValueRef center
[2], centroid
[2], tmp
, bc_optimize
;
7804 /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER;
7805 * The hw doesn't compute CENTROID if the whole wave only
7806 * contains fully-covered quads.
7808 * PRIM_MASK is after user SGPRs.
7810 bc_optimize
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7811 bc_optimize
= LLVMBuildLShr(ctx
->ac
.builder
, bc_optimize
,
7812 LLVMConstInt(ctx
->i32
, 31, 0), "");
7813 bc_optimize
= LLVMBuildTrunc(ctx
->ac
.builder
, bc_optimize
,
7816 if (key
->ps_prolog
.states
.bc_optimize_for_persp
) {
7817 /* Read PERSP_CENTER. */
7818 for (i
= 0; i
< 2; i
++)
7819 center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7820 /* Read PERSP_CENTROID. */
7821 for (i
= 0; i
< 2; i
++)
7822 centroid
[i
] = LLVMGetParam(func
, base
+ 4 + i
);
7823 /* Select PERSP_CENTROID. */
7824 for (i
= 0; i
< 2; i
++) {
7825 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7826 center
[i
], centroid
[i
], "");
7827 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7828 tmp
, base
+ 4 + i
, "");
7831 if (key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7832 /* Read LINEAR_CENTER. */
7833 for (i
= 0; i
< 2; i
++)
7834 center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7835 /* Read LINEAR_CENTROID. */
7836 for (i
= 0; i
< 2; i
++)
7837 centroid
[i
] = LLVMGetParam(func
, base
+ 10 + i
);
7838 /* Select LINEAR_CENTROID. */
7839 for (i
= 0; i
< 2; i
++) {
7840 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7841 center
[i
], centroid
[i
], "");
7842 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7843 tmp
, base
+ 10 + i
, "");
7848 /* Force per-sample interpolation. */
7849 if (key
->ps_prolog
.states
.force_persp_sample_interp
) {
7850 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7851 LLVMValueRef persp_sample
[2];
7853 /* Read PERSP_SAMPLE. */
7854 for (i
= 0; i
< 2; i
++)
7855 persp_sample
[i
] = LLVMGetParam(func
, base
+ i
);
7856 /* Overwrite PERSP_CENTER. */
7857 for (i
= 0; i
< 2; i
++)
7858 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7859 persp_sample
[i
], base
+ 2 + i
, "");
7860 /* Overwrite PERSP_CENTROID. */
7861 for (i
= 0; i
< 2; i
++)
7862 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7863 persp_sample
[i
], base
+ 4 + i
, "");
7865 if (key
->ps_prolog
.states
.force_linear_sample_interp
) {
7866 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7867 LLVMValueRef linear_sample
[2];
7869 /* Read LINEAR_SAMPLE. */
7870 for (i
= 0; i
< 2; i
++)
7871 linear_sample
[i
] = LLVMGetParam(func
, base
+ 6 + i
);
7872 /* Overwrite LINEAR_CENTER. */
7873 for (i
= 0; i
< 2; i
++)
7874 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7875 linear_sample
[i
], base
+ 8 + i
, "");
7876 /* Overwrite LINEAR_CENTROID. */
7877 for (i
= 0; i
< 2; i
++)
7878 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7879 linear_sample
[i
], base
+ 10 + i
, "");
7882 /* Force center interpolation. */
7883 if (key
->ps_prolog
.states
.force_persp_center_interp
) {
7884 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7885 LLVMValueRef persp_center
[2];
7887 /* Read PERSP_CENTER. */
7888 for (i
= 0; i
< 2; i
++)
7889 persp_center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7890 /* Overwrite PERSP_SAMPLE. */
7891 for (i
= 0; i
< 2; i
++)
7892 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7893 persp_center
[i
], base
+ i
, "");
7894 /* Overwrite PERSP_CENTROID. */
7895 for (i
= 0; i
< 2; i
++)
7896 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7897 persp_center
[i
], base
+ 4 + i
, "");
7899 if (key
->ps_prolog
.states
.force_linear_center_interp
) {
7900 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7901 LLVMValueRef linear_center
[2];
7903 /* Read LINEAR_CENTER. */
7904 for (i
= 0; i
< 2; i
++)
7905 linear_center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7906 /* Overwrite LINEAR_SAMPLE. */
7907 for (i
= 0; i
< 2; i
++)
7908 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7909 linear_center
[i
], base
+ 6 + i
, "");
7910 /* Overwrite LINEAR_CENTROID. */
7911 for (i
= 0; i
< 2; i
++)
7912 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7913 linear_center
[i
], base
+ 10 + i
, "");
7916 /* Interpolate colors. */
7917 unsigned color_out_idx
= 0;
7918 for (i
= 0; i
< 2; i
++) {
7919 unsigned writemask
= (key
->ps_prolog
.colors_read
>> (i
* 4)) & 0xf;
7920 unsigned face_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7921 key
->ps_prolog
.face_vgpr_index
;
7922 LLVMValueRef interp
[2], color
[4];
7923 LLVMValueRef interp_ij
= NULL
, prim_mask
= NULL
, face
= NULL
;
7928 /* If the interpolation qualifier is not CONSTANT (-1). */
7929 if (key
->ps_prolog
.color_interp_vgpr_index
[i
] != -1) {
7930 unsigned interp_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7931 key
->ps_prolog
.color_interp_vgpr_index
[i
];
7933 /* Get the (i,j) updated by bc_optimize handling. */
7934 interp
[0] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7936 interp
[1] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7937 interp_vgpr
+ 1, "");
7938 interp_ij
= ac_build_gather_values(&ctx
->ac
, interp
, 2);
7941 /* Use the absolute location of the input. */
7942 prim_mask
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7944 if (key
->ps_prolog
.states
.color_two_side
) {
7945 face
= LLVMGetParam(func
, face_vgpr
);
7946 face
= ac_to_integer(&ctx
->ac
, face
);
7949 interp_fs_input(ctx
,
7950 key
->ps_prolog
.color_attr_index
[i
],
7951 TGSI_SEMANTIC_COLOR
, i
,
7952 key
->ps_prolog
.num_interp_inputs
,
7953 key
->ps_prolog
.colors_read
, interp_ij
,
7954 prim_mask
, face
, color
);
7957 unsigned chan
= u_bit_scan(&writemask
);
7958 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, color
[chan
],
7959 fninfo
.num_params
+ color_out_idx
++, "");
7963 /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec
7966 * "When per-sample shading is active due to the use of a fragment
7967 * input qualified by sample or due to the use of the gl_SampleID
7968 * or gl_SamplePosition variables, only the bit for the current
7969 * sample is set in gl_SampleMaskIn. When state specifies multiple
7970 * fragment shader invocations for a given fragment, the sample
7971 * mask for any single fragment shader invocation may specify a
7972 * subset of the covered samples for the fragment. In this case,
7973 * the bit corresponding to each covered sample will be set in
7974 * exactly one fragment shader invocation."
7976 * The samplemask loaded by hardware is always the coverage of the
7977 * entire pixel/fragment, so mask bits out based on the sample ID.
7979 if (key
->ps_prolog
.states
.samplemask_log_ps_iter
) {
7980 /* The bit pattern matches that used by fixed function fragment
7982 static const uint16_t ps_iter_masks
[] = {
7983 0xffff, /* not used */
7989 assert(key
->ps_prolog
.states
.samplemask_log_ps_iter
< ARRAY_SIZE(ps_iter_masks
));
7991 uint32_t ps_iter_mask
= ps_iter_masks
[key
->ps_prolog
.states
.samplemask_log_ps_iter
];
7992 unsigned ancillary_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7993 key
->ps_prolog
.ancillary_vgpr_index
;
7994 LLVMValueRef sampleid
= si_unpack_param(ctx
, ancillary_vgpr
, 8, 4);
7995 LLVMValueRef samplemask
= LLVMGetParam(func
, ancillary_vgpr
+ 1);
7997 samplemask
= ac_to_integer(&ctx
->ac
, samplemask
);
7998 samplemask
= LLVMBuildAnd(
8001 LLVMBuildShl(ctx
->ac
.builder
,
8002 LLVMConstInt(ctx
->i32
, ps_iter_mask
, false),
8005 samplemask
= ac_to_float(&ctx
->ac
, samplemask
);
8007 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, samplemask
,
8008 ancillary_vgpr
+ 1, "");
8011 /* Tell LLVM to insert WQM instruction sequence when needed. */
8012 if (key
->ps_prolog
.wqm
) {
8013 LLVMAddTargetDependentFunctionAttr(func
,
8014 "amdgpu-ps-wqm-outputs", "");
8017 si_llvm_build_ret(ctx
, ret
);
8021 * Build the pixel shader epilog function. This handles everything that must be
8022 * emulated for pixel shader exports. (alpha-test, format conversions, etc)
8024 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
8025 union si_shader_part_key
*key
)
8027 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
8028 struct si_function_info fninfo
;
8029 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
8031 struct si_ps_exports exp
= {};
8033 si_init_function_info(&fninfo
);
8035 /* Declare input SGPRs. */
8036 ctx
->param_rw_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
8037 ctx
->param_bindless_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
8038 ctx
->param_const_and_shader_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
8039 ctx
->param_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
8040 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
8042 /* Declare input VGPRs. */
8043 unsigned required_num_params
=
8044 fninfo
.num_sgpr_params
+
8045 util_bitcount(key
->ps_epilog
.colors_written
) * 4 +
8046 key
->ps_epilog
.writes_z
+
8047 key
->ps_epilog
.writes_stencil
+
8048 key
->ps_epilog
.writes_samplemask
;
8050 required_num_params
= MAX2(required_num_params
,
8051 fninfo
.num_sgpr_params
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
8053 while (fninfo
.num_params
< required_num_params
)
8054 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
8056 /* Create the function. */
8057 si_create_function(ctx
, "ps_epilog", NULL
, 0, &fninfo
, 0);
8058 /* Disable elimination of unused inputs. */
8059 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
8060 "InitialPSInputAddr", 0xffffff);
8062 /* Process colors. */
8063 unsigned vgpr
= fninfo
.num_sgpr_params
;
8064 unsigned colors_written
= key
->ps_epilog
.colors_written
;
8065 int last_color_export
= -1;
8067 /* Find the last color export. */
8068 if (!key
->ps_epilog
.writes_z
&&
8069 !key
->ps_epilog
.writes_stencil
&&
8070 !key
->ps_epilog
.writes_samplemask
) {
8071 unsigned spi_format
= key
->ps_epilog
.states
.spi_shader_col_format
;
8073 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
8074 if (colors_written
== 0x1 && key
->ps_epilog
.states
.last_cbuf
> 0) {
8075 /* Just set this if any of the colorbuffers are enabled. */
8077 ((1ull << (4 * (key
->ps_epilog
.states
.last_cbuf
+ 1))) - 1))
8078 last_color_export
= 0;
8080 for (i
= 0; i
< 8; i
++)
8081 if (colors_written
& (1 << i
) &&
8082 (spi_format
>> (i
* 4)) & 0xf)
8083 last_color_export
= i
;
8087 while (colors_written
) {
8088 LLVMValueRef color
[4];
8089 int mrt
= u_bit_scan(&colors_written
);
8091 for (i
= 0; i
< 4; i
++)
8092 color
[i
] = LLVMGetParam(ctx
->main_fn
, vgpr
++);
8094 si_export_mrt_color(bld_base
, color
, mrt
,
8095 fninfo
.num_params
- 1,
8096 mrt
== last_color_export
, &exp
);
8099 /* Process depth, stencil, samplemask. */
8100 if (key
->ps_epilog
.writes_z
)
8101 depth
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
8102 if (key
->ps_epilog
.writes_stencil
)
8103 stencil
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
8104 if (key
->ps_epilog
.writes_samplemask
)
8105 samplemask
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
8107 if (depth
|| stencil
|| samplemask
)
8108 si_export_mrt_z(bld_base
, depth
, stencil
, samplemask
, &exp
);
8109 else if (last_color_export
== -1)
8110 ac_build_export_null(&ctx
->ac
);
8113 si_emit_ps_exports(ctx
, &exp
);
8116 LLVMBuildRetVoid(ctx
->ac
.builder
);
8120 * Select and compile (or reuse) pixel shader parts (prolog & epilog).
8122 static bool si_shader_select_ps_parts(struct si_screen
*sscreen
,
8123 struct ac_llvm_compiler
*compiler
,
8124 struct si_shader
*shader
,
8125 struct pipe_debug_callback
*debug
)
8127 union si_shader_part_key prolog_key
;
8128 union si_shader_part_key epilog_key
;
8130 /* Get the prolog. */
8131 si_get_ps_prolog_key(shader
, &prolog_key
, true);
8133 /* The prolog is a no-op if these aren't set. */
8134 if (si_need_ps_prolog(&prolog_key
)) {
8136 si_get_shader_part(sscreen
, &sscreen
->ps_prologs
,
8137 PIPE_SHADER_FRAGMENT
, true,
8138 &prolog_key
, compiler
, debug
,
8139 si_build_ps_prolog_function
,
8140 "Fragment Shader Prolog");
8141 if (!shader
->prolog
)
8145 /* Get the epilog. */
8146 si_get_ps_epilog_key(shader
, &epilog_key
);
8149 si_get_shader_part(sscreen
, &sscreen
->ps_epilogs
,
8150 PIPE_SHADER_FRAGMENT
, false,
8151 &epilog_key
, compiler
, debug
,
8152 si_build_ps_epilog_function
,
8153 "Fragment Shader Epilog");
8154 if (!shader
->epilog
)
8157 /* Enable POS_FIXED_PT if polygon stippling is enabled. */
8158 if (shader
->key
.part
.ps
.prolog
.poly_stipple
) {
8159 shader
->config
.spi_ps_input_ena
|= S_0286CC_POS_FIXED_PT_ENA(1);
8160 assert(G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
));
8163 /* Set up the enable bits for per-sample shading if needed. */
8164 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
&&
8165 (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
8166 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
8167 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTER_ENA
;
8168 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
8169 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_SAMPLE_ENA(1);
8171 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
&&
8172 (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
8173 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
8174 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTER_ENA
;
8175 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
8176 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_SAMPLE_ENA(1);
8178 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
&&
8179 (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
8180 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
8181 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_SAMPLE_ENA
;
8182 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
8183 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
8185 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
&&
8186 (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
8187 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
8188 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_SAMPLE_ENA
;
8189 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
8190 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
8193 /* POW_W_FLOAT requires that one of the perspective weights is enabled. */
8194 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_ena
) &&
8195 !(shader
->config
.spi_ps_input_ena
& 0xf)) {
8196 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
8197 assert(G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
8200 /* At least one pair of interpolation weights must be enabled. */
8201 if (!(shader
->config
.spi_ps_input_ena
& 0x7f)) {
8202 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
8203 assert(G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
8206 /* Samplemask fixup requires the sample ID. */
8207 if (shader
->key
.part
.ps
.prolog
.samplemask_log_ps_iter
) {
8208 shader
->config
.spi_ps_input_ena
|= S_0286CC_ANCILLARY_ENA(1);
8209 assert(G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
));
8212 /* The sample mask input is always enabled, because the API shader always
8213 * passes it through to the epilog. Disable it here if it's unused.
8215 if (!shader
->key
.part
.ps
.epilog
.poly_line_smoothing
&&
8216 !shader
->selector
->info
.reads_samplemask
)
8217 shader
->config
.spi_ps_input_ena
&= C_0286CC_SAMPLE_COVERAGE_ENA
;
8222 void si_multiwave_lds_size_workaround(struct si_screen
*sscreen
,
8225 /* If tessellation is all offchip and on-chip GS isn't used, this
8226 * workaround is not needed.
8230 /* SPI barrier management bug:
8231 * Make sure we have at least 4k of LDS in use to avoid the bug.
8232 * It applies to workgroup sizes of more than one wavefront.
8234 if (sscreen
->info
.family
== CHIP_BONAIRE
||
8235 sscreen
->info
.family
== CHIP_KABINI
)
8236 *lds_size
= MAX2(*lds_size
, 8);
8239 static void si_fix_resource_usage(struct si_screen
*sscreen
,
8240 struct si_shader
*shader
)
8242 unsigned min_sgprs
= shader
->info
.num_input_sgprs
+ 2; /* VCC */
8244 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
, min_sgprs
);
8246 if (shader
->selector
->type
== PIPE_SHADER_COMPUTE
&&
8247 si_get_max_workgroup_size(shader
) > sscreen
->compute_wave_size
) {
8248 si_multiwave_lds_size_workaround(sscreen
,
8249 &shader
->config
.lds_size
);
8253 bool si_shader_create(struct si_screen
*sscreen
, struct ac_llvm_compiler
*compiler
,
8254 struct si_shader
*shader
,
8255 struct pipe_debug_callback
*debug
)
8257 struct si_shader_selector
*sel
= shader
->selector
;
8258 struct si_shader
*mainp
= *si_get_main_shader_part(sel
, &shader
->key
);
8261 /* LS, ES, VS are compiled on demand if the main part hasn't been
8262 * compiled for that stage.
8264 * GS are compiled on demand if the main part hasn't been compiled
8265 * for the chosen NGG-ness.
8267 * Vertex shaders are compiled on demand when a vertex fetch
8268 * workaround must be applied.
8270 if (shader
->is_monolithic
) {
8271 /* Monolithic shader (compiled as a whole, has many variants,
8272 * may take a long time to compile).
8274 r
= si_compile_tgsi_shader(sscreen
, compiler
, shader
, debug
);
8278 /* The shader consists of several parts:
8280 * - the middle part is the user shader, it has 1 variant only
8281 * and it was compiled during the creation of the shader
8283 * - the prolog part is inserted at the beginning
8284 * - the epilog part is inserted at the end
8286 * The prolog and epilog have many (but simple) variants.
8288 * Starting with gfx9, geometry and tessellation control
8289 * shaders also contain the prolog and user shader parts of
8290 * the previous shader stage.
8296 /* Copy the compiled TGSI shader data over. */
8297 shader
->is_binary_shared
= true;
8298 shader
->binary
= mainp
->binary
;
8299 shader
->config
= mainp
->config
;
8300 shader
->info
.num_input_sgprs
= mainp
->info
.num_input_sgprs
;
8301 shader
->info
.num_input_vgprs
= mainp
->info
.num_input_vgprs
;
8302 shader
->info
.face_vgpr_index
= mainp
->info
.face_vgpr_index
;
8303 shader
->info
.ancillary_vgpr_index
= mainp
->info
.ancillary_vgpr_index
;
8304 memcpy(shader
->info
.vs_output_param_offset
,
8305 mainp
->info
.vs_output_param_offset
,
8306 sizeof(mainp
->info
.vs_output_param_offset
));
8307 shader
->info
.uses_instanceid
= mainp
->info
.uses_instanceid
;
8308 shader
->info
.nr_pos_exports
= mainp
->info
.nr_pos_exports
;
8309 shader
->info
.nr_param_exports
= mainp
->info
.nr_param_exports
;
8311 /* Select prologs and/or epilogs. */
8312 switch (sel
->type
) {
8313 case PIPE_SHADER_VERTEX
:
8314 if (!si_shader_select_vs_parts(sscreen
, compiler
, shader
, debug
))
8317 case PIPE_SHADER_TESS_CTRL
:
8318 if (!si_shader_select_tcs_parts(sscreen
, compiler
, shader
, debug
))
8321 case PIPE_SHADER_TESS_EVAL
:
8323 case PIPE_SHADER_GEOMETRY
:
8324 if (!si_shader_select_gs_parts(sscreen
, compiler
, shader
, debug
))
8327 case PIPE_SHADER_FRAGMENT
:
8328 if (!si_shader_select_ps_parts(sscreen
, compiler
, shader
, debug
))
8331 /* Make sure we have at least as many VGPRs as there
8332 * are allocated inputs.
8334 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8335 shader
->info
.num_input_vgprs
);
8340 /* Update SGPR and VGPR counts. */
8341 if (shader
->prolog
) {
8342 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8343 shader
->prolog
->config
.num_sgprs
);
8344 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8345 shader
->prolog
->config
.num_vgprs
);
8347 if (shader
->previous_stage
) {
8348 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8349 shader
->previous_stage
->config
.num_sgprs
);
8350 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8351 shader
->previous_stage
->config
.num_vgprs
);
8352 shader
->config
.spilled_sgprs
=
8353 MAX2(shader
->config
.spilled_sgprs
,
8354 shader
->previous_stage
->config
.spilled_sgprs
);
8355 shader
->config
.spilled_vgprs
=
8356 MAX2(shader
->config
.spilled_vgprs
,
8357 shader
->previous_stage
->config
.spilled_vgprs
);
8358 shader
->info
.private_mem_vgprs
=
8359 MAX2(shader
->info
.private_mem_vgprs
,
8360 shader
->previous_stage
->info
.private_mem_vgprs
);
8361 shader
->config
.scratch_bytes_per_wave
=
8362 MAX2(shader
->config
.scratch_bytes_per_wave
,
8363 shader
->previous_stage
->config
.scratch_bytes_per_wave
);
8364 shader
->info
.uses_instanceid
|=
8365 shader
->previous_stage
->info
.uses_instanceid
;
8367 if (shader
->prolog2
) {
8368 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8369 shader
->prolog2
->config
.num_sgprs
);
8370 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8371 shader
->prolog2
->config
.num_vgprs
);
8373 if (shader
->epilog
) {
8374 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8375 shader
->epilog
->config
.num_sgprs
);
8376 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8377 shader
->epilog
->config
.num_vgprs
);
8379 si_calculate_max_simd_waves(shader
);
8382 if (shader
->key
.as_ngg
) {
8383 assert(!shader
->key
.as_es
&& !shader
->key
.as_ls
);
8384 gfx10_ngg_calculate_subgroup_info(shader
);
8385 } else if (sscreen
->info
.chip_class
>= GFX9
&& sel
->type
== PIPE_SHADER_GEOMETRY
) {
8386 gfx9_get_gs_info(shader
->previous_stage_sel
, sel
, &shader
->gs_info
);
8389 si_fix_resource_usage(sscreen
, shader
);
8390 si_shader_dump(sscreen
, shader
, debug
, stderr
, true);
8393 if (!si_shader_binary_upload(sscreen
, shader
, 0)) {
8394 fprintf(stderr
, "LLVM failed to upload shader\n");
8401 void si_shader_destroy(struct si_shader
*shader
)
8403 if (shader
->scratch_bo
)
8404 si_resource_reference(&shader
->scratch_bo
, NULL
);
8406 si_resource_reference(&shader
->bo
, NULL
);
8408 if (!shader
->is_binary_shared
)
8409 si_shader_binary_clean(&shader
->binary
);
8411 free(shader
->shader_log
);