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
);
54 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
55 struct lp_build_tgsi_context
*bld_base
,
56 struct lp_build_emit_data
*emit_data
);
58 static void si_dump_shader_key(unsigned processor
, const struct si_shader
*shader
,
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 static bool is_merged_shader(struct si_shader_context
*ctx
)
88 if (ctx
->screen
->info
.chip_class
<= GFX8
)
91 return ctx
->shader
->key
.as_ls
||
92 ctx
->shader
->key
.as_es
||
93 ctx
->type
== PIPE_SHADER_TESS_CTRL
||
94 ctx
->type
== PIPE_SHADER_GEOMETRY
;
97 void si_init_function_info(struct si_function_info
*fninfo
)
99 fninfo
->num_params
= 0;
100 fninfo
->num_sgpr_params
= 0;
103 unsigned add_arg_assign(struct si_function_info
*fninfo
,
104 enum si_arg_regfile regfile
, LLVMTypeRef type
,
105 LLVMValueRef
*assign
)
107 assert(regfile
!= ARG_SGPR
|| fninfo
->num_sgpr_params
== fninfo
->num_params
);
109 unsigned idx
= fninfo
->num_params
++;
110 assert(idx
< ARRAY_SIZE(fninfo
->types
));
112 if (regfile
== ARG_SGPR
)
113 fninfo
->num_sgpr_params
= fninfo
->num_params
;
115 fninfo
->types
[idx
] = type
;
116 fninfo
->assign
[idx
] = assign
;
120 static unsigned add_arg(struct si_function_info
*fninfo
,
121 enum si_arg_regfile regfile
, LLVMTypeRef type
)
123 return add_arg_assign(fninfo
, regfile
, type
, NULL
);
126 static void add_arg_assign_checked(struct si_function_info
*fninfo
,
127 enum si_arg_regfile regfile
, LLVMTypeRef type
,
128 LLVMValueRef
*assign
, unsigned idx
)
130 MAYBE_UNUSED
unsigned actual
= add_arg_assign(fninfo
, regfile
, type
, assign
);
131 assert(actual
== idx
);
134 static void add_arg_checked(struct si_function_info
*fninfo
,
135 enum si_arg_regfile regfile
, LLVMTypeRef type
,
138 add_arg_assign_checked(fninfo
, regfile
, type
, NULL
, idx
);
142 * Returns a unique index for a per-patch semantic name and index. The index
143 * must be less than 32, so that a 32-bit bitmask of used inputs or outputs
146 unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name
, unsigned index
)
148 switch (semantic_name
) {
149 case TGSI_SEMANTIC_TESSOUTER
:
151 case TGSI_SEMANTIC_TESSINNER
:
153 case TGSI_SEMANTIC_PATCH
:
158 assert(!"invalid semantic name");
164 * Returns a unique index for a semantic name and index. The index must be
165 * less than 64, so that a 64-bit bitmask of used inputs or outputs can be
168 unsigned si_shader_io_get_unique_index(unsigned semantic_name
, unsigned index
,
171 switch (semantic_name
) {
172 case TGSI_SEMANTIC_POSITION
:
174 case TGSI_SEMANTIC_GENERIC
:
175 /* Since some shader stages use the the highest used IO index
176 * to determine the size to allocate for inputs/outputs
177 * (in LDS, tess and GS rings). GENERIC should be placed right
178 * after POSITION to make that size as small as possible.
180 if (index
< SI_MAX_IO_GENERIC
)
183 assert(!"invalid generic index");
185 case TGSI_SEMANTIC_PSIZE
:
186 return SI_MAX_IO_GENERIC
+ 1;
187 case TGSI_SEMANTIC_CLIPDIST
:
189 return SI_MAX_IO_GENERIC
+ 2 + index
;
190 case TGSI_SEMANTIC_FOG
:
191 return SI_MAX_IO_GENERIC
+ 4;
192 case TGSI_SEMANTIC_LAYER
:
193 return SI_MAX_IO_GENERIC
+ 5;
194 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
195 return SI_MAX_IO_GENERIC
+ 6;
196 case TGSI_SEMANTIC_PRIMID
:
197 return SI_MAX_IO_GENERIC
+ 7;
198 case TGSI_SEMANTIC_COLOR
:
200 return SI_MAX_IO_GENERIC
+ 8 + index
;
201 case TGSI_SEMANTIC_BCOLOR
:
203 /* If it's a varying, COLOR and BCOLOR alias. */
205 return SI_MAX_IO_GENERIC
+ 8 + index
;
207 return SI_MAX_IO_GENERIC
+ 10 + index
;
208 case TGSI_SEMANTIC_TEXCOORD
:
210 STATIC_ASSERT(SI_MAX_IO_GENERIC
+ 12 + 8 <= 63);
211 return SI_MAX_IO_GENERIC
+ 12 + index
;
212 case TGSI_SEMANTIC_CLIPVERTEX
:
215 fprintf(stderr
, "invalid semantic name = %u\n", semantic_name
);
216 assert(!"invalid semantic name");
222 * Get the value of a shader input parameter and extract a bitfield.
224 static LLVMValueRef
unpack_llvm_param(struct si_shader_context
*ctx
,
225 LLVMValueRef value
, unsigned rshift
,
228 if (LLVMGetTypeKind(LLVMTypeOf(value
)) == LLVMFloatTypeKind
)
229 value
= ac_to_integer(&ctx
->ac
, value
);
232 value
= LLVMBuildLShr(ctx
->ac
.builder
, value
,
233 LLVMConstInt(ctx
->i32
, rshift
, 0), "");
235 if (rshift
+ bitwidth
< 32) {
236 unsigned mask
= (1 << bitwidth
) - 1;
237 value
= LLVMBuildAnd(ctx
->ac
.builder
, value
,
238 LLVMConstInt(ctx
->i32
, mask
, 0), "");
244 LLVMValueRef
si_unpack_param(struct si_shader_context
*ctx
,
245 unsigned param
, unsigned rshift
,
248 LLVMValueRef value
= LLVMGetParam(ctx
->main_fn
, param
);
250 return unpack_llvm_param(ctx
, value
, rshift
, bitwidth
);
253 static LLVMValueRef
get_rel_patch_id(struct si_shader_context
*ctx
)
256 case PIPE_SHADER_TESS_CTRL
:
257 return unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 0, 8);
259 case PIPE_SHADER_TESS_EVAL
:
260 return LLVMGetParam(ctx
->main_fn
,
261 ctx
->param_tes_rel_patch_id
);
269 /* Tessellation shaders pass outputs to the next shader using LDS.
271 * LS outputs = TCS inputs
272 * TCS outputs = TES inputs
275 * - TCS inputs for patch 0
276 * - TCS inputs for patch 1
277 * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2)
279 * - TCS outputs for patch 0 = get_tcs_out_patch0_offset
280 * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset
281 * - TCS outputs for patch 1
282 * - Per-patch TCS outputs for patch 1
283 * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2)
284 * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2)
287 * All three shaders VS(LS), TCS, TES share the same LDS space.
291 get_tcs_in_patch_stride(struct si_shader_context
*ctx
)
293 return si_unpack_param(ctx
, ctx
->param_vs_state_bits
, 8, 13);
296 static unsigned get_tcs_out_vertex_dw_stride_constant(struct si_shader_context
*ctx
)
298 assert(ctx
->type
== PIPE_SHADER_TESS_CTRL
);
300 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
301 return util_last_bit64(ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
) * 4;
303 return util_last_bit64(ctx
->shader
->selector
->outputs_written
) * 4;
306 static LLVMValueRef
get_tcs_out_vertex_dw_stride(struct si_shader_context
*ctx
)
308 unsigned stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
310 return LLVMConstInt(ctx
->i32
, stride
, 0);
313 static LLVMValueRef
get_tcs_out_patch_stride(struct si_shader_context
*ctx
)
315 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
316 return si_unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 0, 13);
318 const struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
319 unsigned tcs_out_vertices
= info
->properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
];
320 unsigned vertex_dw_stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
321 unsigned num_patch_outputs
= util_last_bit64(ctx
->shader
->selector
->patch_outputs_written
);
322 unsigned patch_dw_stride
= tcs_out_vertices
* vertex_dw_stride
+
323 num_patch_outputs
* 4;
324 return LLVMConstInt(ctx
->i32
, patch_dw_stride
, 0);
328 get_tcs_out_patch0_offset(struct si_shader_context
*ctx
)
330 return LLVMBuildMul(ctx
->ac
.builder
,
332 ctx
->param_tcs_out_lds_offsets
,
334 LLVMConstInt(ctx
->i32
, 4, 0), "");
338 get_tcs_out_patch0_patch_data_offset(struct si_shader_context
*ctx
)
340 return LLVMBuildMul(ctx
->ac
.builder
,
342 ctx
->param_tcs_out_lds_offsets
,
344 LLVMConstInt(ctx
->i32
, 4, 0), "");
348 get_tcs_in_current_patch_offset(struct si_shader_context
*ctx
)
350 LLVMValueRef patch_stride
= get_tcs_in_patch_stride(ctx
);
351 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
353 return LLVMBuildMul(ctx
->ac
.builder
, patch_stride
, rel_patch_id
, "");
357 get_tcs_out_current_patch_offset(struct si_shader_context
*ctx
)
359 LLVMValueRef patch0_offset
= get_tcs_out_patch0_offset(ctx
);
360 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
361 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
363 return ac_build_imad(&ctx
->ac
, patch_stride
, rel_patch_id
, patch0_offset
);
367 get_tcs_out_current_patch_data_offset(struct si_shader_context
*ctx
)
369 LLVMValueRef patch0_patch_data_offset
=
370 get_tcs_out_patch0_patch_data_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_patch_data_offset
);
377 static LLVMValueRef
get_num_tcs_out_vertices(struct si_shader_context
*ctx
)
379 unsigned tcs_out_vertices
=
380 ctx
->shader
->selector
?
381 ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
] : 0;
383 /* If !tcs_out_vertices, it's either the fixed-func TCS or the TCS epilog. */
384 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&& tcs_out_vertices
)
385 return LLVMConstInt(ctx
->i32
, tcs_out_vertices
, 0);
387 return si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 6, 6);
390 static LLVMValueRef
get_tcs_in_vertex_dw_stride(struct si_shader_context
*ctx
)
395 case PIPE_SHADER_VERTEX
:
396 stride
= ctx
->shader
->selector
->lshs_vertex_stride
/ 4;
397 return LLVMConstInt(ctx
->i32
, stride
, 0);
399 case PIPE_SHADER_TESS_CTRL
:
400 if (ctx
->screen
->info
.chip_class
>= GFX9
&&
401 ctx
->shader
->is_monolithic
) {
402 stride
= ctx
->shader
->key
.part
.tcs
.ls
->lshs_vertex_stride
/ 4;
403 return LLVMConstInt(ctx
->i32
, stride
, 0);
405 return si_unpack_param(ctx
, ctx
->param_vs_state_bits
, 24, 8);
413 static LLVMValueRef
unpack_sint16(struct si_shader_context
*ctx
,
414 LLVMValueRef i32
, unsigned index
)
419 return LLVMBuildAShr(ctx
->ac
.builder
, i32
,
420 LLVMConstInt(ctx
->i32
, 16, 0), "");
422 return LLVMBuildSExt(ctx
->ac
.builder
,
423 LLVMBuildTrunc(ctx
->ac
.builder
, i32
,
428 void si_llvm_load_input_vs(
429 struct si_shader_context
*ctx
,
430 unsigned input_index
,
433 const struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
434 unsigned vs_blit_property
= info
->properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
436 if (vs_blit_property
) {
437 LLVMValueRef vertex_id
= ctx
->abi
.vertex_id
;
438 LLVMValueRef sel_x1
= LLVMBuildICmp(ctx
->ac
.builder
,
439 LLVMIntULE
, vertex_id
,
441 /* Use LLVMIntNE, because we have 3 vertices and only
442 * the middle one should use y2.
444 LLVMValueRef sel_y1
= LLVMBuildICmp(ctx
->ac
.builder
,
445 LLVMIntNE
, vertex_id
,
448 if (input_index
== 0) {
450 LLVMValueRef x1y1
= LLVMGetParam(ctx
->main_fn
,
451 ctx
->param_vs_blit_inputs
);
452 LLVMValueRef x2y2
= LLVMGetParam(ctx
->main_fn
,
453 ctx
->param_vs_blit_inputs
+ 1);
455 LLVMValueRef x1
= unpack_sint16(ctx
, x1y1
, 0);
456 LLVMValueRef y1
= unpack_sint16(ctx
, x1y1
, 1);
457 LLVMValueRef x2
= unpack_sint16(ctx
, x2y2
, 0);
458 LLVMValueRef y2
= unpack_sint16(ctx
, x2y2
, 1);
460 LLVMValueRef x
= LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
462 LLVMValueRef y
= LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
465 out
[0] = LLVMBuildSIToFP(ctx
->ac
.builder
, x
, ctx
->f32
, "");
466 out
[1] = LLVMBuildSIToFP(ctx
->ac
.builder
, y
, ctx
->f32
, "");
467 out
[2] = LLVMGetParam(ctx
->main_fn
,
468 ctx
->param_vs_blit_inputs
+ 2);
469 out
[3] = ctx
->ac
.f32_1
;
473 /* Color or texture coordinates: */
474 assert(input_index
== 1);
476 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
477 for (int i
= 0; i
< 4; i
++) {
478 out
[i
] = LLVMGetParam(ctx
->main_fn
,
479 ctx
->param_vs_blit_inputs
+ 3 + i
);
482 assert(vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
);
483 LLVMValueRef x1
= LLVMGetParam(ctx
->main_fn
,
484 ctx
->param_vs_blit_inputs
+ 3);
485 LLVMValueRef y1
= LLVMGetParam(ctx
->main_fn
,
486 ctx
->param_vs_blit_inputs
+ 4);
487 LLVMValueRef x2
= LLVMGetParam(ctx
->main_fn
,
488 ctx
->param_vs_blit_inputs
+ 5);
489 LLVMValueRef y2
= LLVMGetParam(ctx
->main_fn
,
490 ctx
->param_vs_blit_inputs
+ 6);
492 out
[0] = LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
494 out
[1] = LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
496 out
[2] = LLVMGetParam(ctx
->main_fn
,
497 ctx
->param_vs_blit_inputs
+ 7);
498 out
[3] = LLVMGetParam(ctx
->main_fn
,
499 ctx
->param_vs_blit_inputs
+ 8);
504 union si_vs_fix_fetch fix_fetch
;
505 LLVMValueRef t_list_ptr
;
506 LLVMValueRef t_offset
;
508 LLVMValueRef vertex_index
;
511 /* Load the T list */
512 t_list_ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vertex_buffers
);
514 t_offset
= LLVMConstInt(ctx
->i32
, input_index
, 0);
516 t_list
= ac_build_load_to_sgpr(&ctx
->ac
, t_list_ptr
, t_offset
);
518 vertex_index
= LLVMGetParam(ctx
->main_fn
,
519 ctx
->param_vertex_index0
+
522 /* Use the open-coded implementation for all loads of doubles and
523 * of dword-sized data that needs fixups. We need to insert conversion
524 * code anyway, and the amd/common code does it for us.
526 * Note: On LLVM <= 8, we can only open-code formats with
527 * channel size >= 4 bytes.
529 bool opencode
= ctx
->shader
->key
.mono
.vs_fetch_opencode
& (1 << input_index
);
530 fix_fetch
.bits
= ctx
->shader
->key
.mono
.vs_fix_fetch
[input_index
].bits
;
532 (fix_fetch
.u
.log_size
== 3 && fix_fetch
.u
.format
== AC_FETCH_FORMAT_FLOAT
) ||
533 (fix_fetch
.u
.log_size
== 2)) {
534 tmp
= ac_build_opencoded_load_format(
535 &ctx
->ac
, fix_fetch
.u
.log_size
, fix_fetch
.u
.num_channels_m1
+ 1,
536 fix_fetch
.u
.format
, fix_fetch
.u
.reverse
, !opencode
,
537 t_list
, vertex_index
, ctx
->ac
.i32_0
, ctx
->ac
.i32_0
,
539 for (unsigned i
= 0; i
< 4; ++i
)
540 out
[i
] = LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, LLVMConstInt(ctx
->i32
, i
, false), "");
544 /* Do multiple loads for special formats. */
545 unsigned required_channels
= util_last_bit(info
->input_usage_mask
[input_index
]);
546 LLVMValueRef fetches
[4];
547 unsigned num_fetches
;
548 unsigned fetch_stride
;
549 unsigned channels_per_fetch
;
551 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2) {
552 num_fetches
= MIN2(required_channels
, 3);
553 fetch_stride
= 1 << fix_fetch
.u
.log_size
;
554 channels_per_fetch
= 1;
558 channels_per_fetch
= required_channels
;
561 for (unsigned i
= 0; i
< num_fetches
; ++i
) {
562 LLVMValueRef voffset
= LLVMConstInt(ctx
->i32
, fetch_stride
* i
, 0);
563 fetches
[i
] = ac_build_buffer_load_format(&ctx
->ac
, t_list
, vertex_index
, voffset
,
564 channels_per_fetch
, false, true);
567 if (num_fetches
== 1 && channels_per_fetch
> 1) {
568 LLVMValueRef fetch
= fetches
[0];
569 for (unsigned i
= 0; i
< channels_per_fetch
; ++i
) {
570 tmp
= LLVMConstInt(ctx
->i32
, i
, false);
571 fetches
[i
] = LLVMBuildExtractElement(
572 ctx
->ac
.builder
, fetch
, tmp
, "");
574 num_fetches
= channels_per_fetch
;
575 channels_per_fetch
= 1;
578 for (unsigned i
= num_fetches
; i
< 4; ++i
)
579 fetches
[i
] = LLVMGetUndef(ctx
->f32
);
581 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2 &&
582 required_channels
== 4) {
583 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_UINT
|| fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
)
584 fetches
[3] = ctx
->ac
.i32_1
;
586 fetches
[3] = ctx
->ac
.f32_1
;
587 } else if (fix_fetch
.u
.log_size
== 3 &&
588 (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
||
589 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
||
590 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
) &&
591 required_channels
== 4) {
592 /* For 2_10_10_10, the hardware returns an unsigned value;
593 * convert it to a signed one.
595 LLVMValueRef tmp
= fetches
[3];
596 LLVMValueRef c30
= LLVMConstInt(ctx
->i32
, 30, 0);
598 /* First, recover the sign-extended signed integer value. */
599 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
)
600 tmp
= LLVMBuildFPToUI(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
602 tmp
= ac_to_integer(&ctx
->ac
, tmp
);
604 /* For the integer-like cases, do a natural sign extension.
606 * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0
607 * and happen to contain 0, 1, 2, 3 as the two LSBs of the
610 tmp
= LLVMBuildShl(ctx
->ac
.builder
, tmp
,
611 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
?
612 LLVMConstInt(ctx
->i32
, 7, 0) : c30
, "");
613 tmp
= LLVMBuildAShr(ctx
->ac
.builder
, tmp
, c30
, "");
615 /* Convert back to the right type. */
616 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
) {
618 LLVMValueRef neg_one
= LLVMConstReal(ctx
->f32
, -1.0);
619 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
620 clamp
= LLVMBuildFCmp(ctx
->ac
.builder
, LLVMRealULT
, tmp
, neg_one
, "");
621 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, clamp
, neg_one
, tmp
, "");
622 } else if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
) {
623 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
629 for (unsigned i
= 0; i
< 4; ++i
)
630 out
[i
] = ac_to_float(&ctx
->ac
, fetches
[i
]);
633 static void declare_input_vs(
634 struct si_shader_context
*ctx
,
635 unsigned input_index
,
636 const struct tgsi_full_declaration
*decl
,
639 si_llvm_load_input_vs(ctx
, input_index
, out
);
642 LLVMValueRef
si_get_primitive_id(struct si_shader_context
*ctx
,
649 case PIPE_SHADER_VERTEX
:
650 return LLVMGetParam(ctx
->main_fn
,
651 ctx
->param_vs_prim_id
);
652 case PIPE_SHADER_TESS_CTRL
:
653 return ctx
->abi
.tcs_patch_id
;
654 case PIPE_SHADER_TESS_EVAL
:
655 return ctx
->abi
.tes_patch_id
;
656 case PIPE_SHADER_GEOMETRY
:
657 return ctx
->abi
.gs_prim_id
;
665 * Return the value of tgsi_ind_register for indexing.
666 * This is the indirect index with the constant offset added to it.
668 LLVMValueRef
si_get_indirect_index(struct si_shader_context
*ctx
,
669 const struct tgsi_ind_register
*ind
,
675 if (ind
->File
== TGSI_FILE_ADDRESS
) {
676 result
= ctx
->addrs
[ind
->Index
][ind
->Swizzle
];
677 result
= LLVMBuildLoad(ctx
->ac
.builder
, result
, "");
679 struct tgsi_full_src_register src
= {};
681 src
.Register
.File
= ind
->File
;
682 src
.Register
.Index
= ind
->Index
;
684 /* Set the second index to 0 for constants. */
685 if (ind
->File
== TGSI_FILE_CONSTANT
)
686 src
.Register
.Dimension
= 1;
688 result
= ctx
->bld_base
.emit_fetch_funcs
[ind
->File
](&ctx
->bld_base
, &src
,
691 result
= ac_to_integer(&ctx
->ac
, result
);
694 return ac_build_imad(&ctx
->ac
, result
, LLVMConstInt(ctx
->i32
, addr_mul
, 0),
695 LLVMConstInt(ctx
->i32
, rel_index
, 0));
699 * Like si_get_indirect_index, but restricts the return value to a (possibly
700 * undefined) value inside [0..num).
702 LLVMValueRef
si_get_bounded_indirect_index(struct si_shader_context
*ctx
,
703 const struct tgsi_ind_register
*ind
,
704 int rel_index
, unsigned num
)
706 LLVMValueRef result
= si_get_indirect_index(ctx
, ind
, 1, rel_index
);
708 return si_llvm_bound_index(ctx
, result
, num
);
711 static LLVMValueRef
get_dw_address_from_generic_indices(struct si_shader_context
*ctx
,
712 LLVMValueRef vertex_dw_stride
,
713 LLVMValueRef base_addr
,
714 LLVMValueRef vertex_index
,
715 LLVMValueRef param_index
,
716 unsigned input_index
,
721 if (vertex_dw_stride
) {
722 base_addr
= ac_build_imad(&ctx
->ac
, vertex_index
,
723 vertex_dw_stride
, base_addr
);
727 base_addr
= ac_build_imad(&ctx
->ac
, param_index
,
728 LLVMConstInt(ctx
->i32
, 4, 0), base_addr
);
731 int param
= is_patch
?
732 si_shader_io_get_unique_index_patch(name
[input_index
],
733 index
[input_index
]) :
734 si_shader_io_get_unique_index(name
[input_index
],
735 index
[input_index
], false);
737 /* Add the base address of the element. */
738 return LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
739 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
743 * Calculate a dword address given an input or output register and a stride.
745 static LLVMValueRef
get_dw_address(struct si_shader_context
*ctx
,
746 const struct tgsi_full_dst_register
*dst
,
747 const struct tgsi_full_src_register
*src
,
748 LLVMValueRef vertex_dw_stride
,
749 LLVMValueRef base_addr
)
751 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
752 ubyte
*name
, *index
, *array_first
;
754 struct tgsi_full_dst_register reg
;
755 LLVMValueRef vertex_index
= NULL
;
756 LLVMValueRef ind_index
= NULL
;
758 /* Set the register description. The address computation is the same
759 * for sources and destinations. */
761 reg
.Register
.File
= src
->Register
.File
;
762 reg
.Register
.Index
= src
->Register
.Index
;
763 reg
.Register
.Indirect
= src
->Register
.Indirect
;
764 reg
.Register
.Dimension
= src
->Register
.Dimension
;
765 reg
.Indirect
= src
->Indirect
;
766 reg
.Dimension
= src
->Dimension
;
767 reg
.DimIndirect
= src
->DimIndirect
;
771 /* If the register is 2-dimensional (e.g. an array of vertices
772 * in a primitive), calculate the base address of the vertex. */
773 if (reg
.Register
.Dimension
) {
774 if (reg
.Dimension
.Indirect
)
775 vertex_index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
776 1, reg
.Dimension
.Index
);
778 vertex_index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
781 /* Get information about the register. */
782 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
783 name
= info
->input_semantic_name
;
784 index
= info
->input_semantic_index
;
785 array_first
= info
->input_array_first
;
786 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
787 name
= info
->output_semantic_name
;
788 index
= info
->output_semantic_index
;
789 array_first
= info
->output_array_first
;
795 if (reg
.Register
.Indirect
) {
796 /* Add the relative address of the element. */
797 if (reg
.Indirect
.ArrayID
)
798 input_index
= array_first
[reg
.Indirect
.ArrayID
];
800 input_index
= reg
.Register
.Index
;
802 ind_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
803 1, reg
.Register
.Index
- input_index
);
805 input_index
= reg
.Register
.Index
;
808 return get_dw_address_from_generic_indices(ctx
, vertex_dw_stride
,
809 base_addr
, vertex_index
,
810 ind_index
, input_index
,
812 !reg
.Register
.Dimension
);
815 /* The offchip buffer layout for TCS->TES is
817 * - attribute 0 of patch 0 vertex 0
818 * - attribute 0 of patch 0 vertex 1
819 * - attribute 0 of patch 0 vertex 2
821 * - attribute 0 of patch 1 vertex 0
822 * - attribute 0 of patch 1 vertex 1
824 * - attribute 1 of patch 0 vertex 0
825 * - attribute 1 of patch 0 vertex 1
827 * - per patch attribute 0 of patch 0
828 * - per patch attribute 0 of patch 1
831 * Note that every attribute has 4 components.
833 static LLVMValueRef
get_tcs_tes_buffer_address(struct si_shader_context
*ctx
,
834 LLVMValueRef rel_patch_id
,
835 LLVMValueRef vertex_index
,
836 LLVMValueRef param_index
)
838 LLVMValueRef base_addr
, vertices_per_patch
, num_patches
, total_vertices
;
839 LLVMValueRef param_stride
, constant16
;
841 vertices_per_patch
= get_num_tcs_out_vertices(ctx
);
842 num_patches
= si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 0, 6);
843 total_vertices
= LLVMBuildMul(ctx
->ac
.builder
, vertices_per_patch
,
846 constant16
= LLVMConstInt(ctx
->i32
, 16, 0);
848 base_addr
= ac_build_imad(&ctx
->ac
, rel_patch_id
,
849 vertices_per_patch
, vertex_index
);
850 param_stride
= total_vertices
;
852 base_addr
= rel_patch_id
;
853 param_stride
= num_patches
;
856 base_addr
= ac_build_imad(&ctx
->ac
, param_index
, param_stride
, base_addr
);
857 base_addr
= LLVMBuildMul(ctx
->ac
.builder
, base_addr
, constant16
, "");
860 LLVMValueRef patch_data_offset
=
861 si_unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 12, 20);
863 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
864 patch_data_offset
, "");
869 /* This is a generic helper that can be shared by the NIR and TGSI backends */
870 static LLVMValueRef
get_tcs_tes_buffer_address_from_generic_indices(
871 struct si_shader_context
*ctx
,
872 LLVMValueRef vertex_index
,
873 LLVMValueRef param_index
,
879 unsigned param_index_base
;
881 param_index_base
= is_patch
?
882 si_shader_io_get_unique_index_patch(name
[param_base
], index
[param_base
]) :
883 si_shader_io_get_unique_index(name
[param_base
], index
[param_base
], false);
886 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
887 LLVMConstInt(ctx
->i32
, param_index_base
, 0),
890 param_index
= LLVMConstInt(ctx
->i32
, param_index_base
, 0);
893 return get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
),
894 vertex_index
, param_index
);
897 static LLVMValueRef
get_tcs_tes_buffer_address_from_reg(
898 struct si_shader_context
*ctx
,
899 const struct tgsi_full_dst_register
*dst
,
900 const struct tgsi_full_src_register
*src
)
902 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
903 ubyte
*name
, *index
, *array_first
;
904 struct tgsi_full_src_register reg
;
905 LLVMValueRef vertex_index
= NULL
;
906 LLVMValueRef param_index
= NULL
;
909 reg
= src
? *src
: tgsi_full_src_register_from_dst(dst
);
911 if (reg
.Register
.Dimension
) {
913 if (reg
.Dimension
.Indirect
)
914 vertex_index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
915 1, reg
.Dimension
.Index
);
917 vertex_index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
920 /* Get information about the register. */
921 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
922 name
= info
->input_semantic_name
;
923 index
= info
->input_semantic_index
;
924 array_first
= info
->input_array_first
;
925 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
926 name
= info
->output_semantic_name
;
927 index
= info
->output_semantic_index
;
928 array_first
= info
->output_array_first
;
934 if (reg
.Register
.Indirect
) {
935 if (reg
.Indirect
.ArrayID
)
936 param_base
= array_first
[reg
.Indirect
.ArrayID
];
938 param_base
= reg
.Register
.Index
;
940 param_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
941 1, reg
.Register
.Index
- param_base
);
944 param_base
= reg
.Register
.Index
;
947 return get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
948 param_index
, param_base
,
949 name
, index
, !reg
.Register
.Dimension
);
952 static LLVMValueRef
buffer_load(struct lp_build_tgsi_context
*bld_base
,
953 LLVMTypeRef type
, unsigned swizzle
,
954 LLVMValueRef buffer
, LLVMValueRef offset
,
955 LLVMValueRef base
, bool can_speculate
)
957 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
958 LLVMValueRef value
, value2
;
959 LLVMTypeRef vec_type
= LLVMVectorType(type
, 4);
962 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
963 0, 1, 0, can_speculate
, false);
965 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
968 if (!llvm_type_is_64bit(ctx
, type
)) {
969 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
970 0, 1, 0, can_speculate
, false);
972 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
973 return LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
974 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
977 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
978 swizzle
* 4, 1, 0, can_speculate
, false);
980 value2
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
981 swizzle
* 4 + 4, 1, 0, can_speculate
, false);
983 return si_llvm_emit_fetch_64bit(bld_base
, type
, value
, value2
);
987 * Load from LSHS LDS storage.
989 * \param type output value type
990 * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4
991 * \param dw_addr address in dwords
993 static LLVMValueRef
lshs_lds_load(struct lp_build_tgsi_context
*bld_base
,
994 LLVMTypeRef type
, unsigned swizzle
,
995 LLVMValueRef dw_addr
)
997 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1000 if (swizzle
== ~0) {
1001 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1003 for (unsigned chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++)
1004 values
[chan
] = lshs_lds_load(bld_base
, type
, chan
, dw_addr
);
1006 return ac_build_gather_values(&ctx
->ac
, values
,
1010 /* Split 64-bit loads. */
1011 if (llvm_type_is_64bit(ctx
, type
)) {
1012 LLVMValueRef lo
, hi
;
1014 lo
= lshs_lds_load(bld_base
, ctx
->i32
, swizzle
, dw_addr
);
1015 hi
= lshs_lds_load(bld_base
, ctx
->i32
, swizzle
+ 1, dw_addr
);
1016 return si_llvm_emit_fetch_64bit(bld_base
, type
, lo
, hi
);
1019 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
1020 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
1022 value
= ac_lds_load(&ctx
->ac
, dw_addr
);
1024 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1028 * Store to LSHS LDS storage.
1030 * \param swizzle offset (typically 0..3)
1031 * \param dw_addr address in dwords
1032 * \param value value to store
1034 static void lshs_lds_store(struct si_shader_context
*ctx
,
1035 unsigned dw_offset_imm
, LLVMValueRef dw_addr
,
1038 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
1039 LLVMConstInt(ctx
->i32
, dw_offset_imm
, 0), "");
1041 ac_lds_store(&ctx
->ac
, dw_addr
, value
);
1046 TESS_OFFCHIP_RING_TCS
,
1047 TESS_OFFCHIP_RING_TES
,
1050 static LLVMValueRef
get_tess_ring_descriptor(struct si_shader_context
*ctx
,
1051 enum si_tess_ring ring
)
1053 LLVMBuilderRef builder
= ctx
->ac
.builder
;
1054 unsigned param
= ring
== TESS_OFFCHIP_RING_TES
? ctx
->param_tes_offchip_addr
:
1055 ctx
->param_tcs_out_lds_layout
;
1056 LLVMValueRef addr
= LLVMGetParam(ctx
->main_fn
, param
);
1058 /* TCS only receives high 13 bits of the address. */
1059 if (ring
== TESS_OFFCHIP_RING_TCS
|| ring
== TCS_FACTOR_RING
) {
1060 addr
= LLVMBuildAnd(builder
, addr
,
1061 LLVMConstInt(ctx
->i32
, 0xfff80000, 0), "");
1064 if (ring
== TCS_FACTOR_RING
) {
1065 unsigned tf_offset
= ctx
->screen
->tess_offchip_ring_size
;
1066 addr
= LLVMBuildAdd(builder
, addr
,
1067 LLVMConstInt(ctx
->i32
, tf_offset
, 0), "");
1070 LLVMValueRef desc
[4];
1072 desc
[1] = LLVMConstInt(ctx
->i32
,
1073 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
1074 desc
[2] = LLVMConstInt(ctx
->i32
, 0xffffffff, 0);
1075 desc
[3] = LLVMConstInt(ctx
->i32
,
1076 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
1077 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
1078 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
1079 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
1080 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
1081 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
), 0);
1083 return ac_build_gather_values(&ctx
->ac
, desc
, 4);
1086 static LLVMValueRef
fetch_input_tcs(
1087 struct lp_build_tgsi_context
*bld_base
,
1088 const struct tgsi_full_src_register
*reg
,
1089 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1091 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1092 LLVMValueRef dw_addr
, stride
;
1093 unsigned swizzle
= swizzle_in
& 0xffff;
1094 stride
= get_tcs_in_vertex_dw_stride(ctx
);
1095 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
1096 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1098 return lshs_lds_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
, dw_addr
);
1101 static LLVMValueRef
si_nir_load_tcs_varyings(struct ac_shader_abi
*abi
,
1103 LLVMValueRef vertex_index
,
1104 LLVMValueRef param_index
,
1105 unsigned const_index
,
1107 unsigned driver_location
,
1109 unsigned num_components
,
1114 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1115 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1116 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
1117 LLVMValueRef dw_addr
, stride
;
1119 driver_location
= driver_location
/ 4;
1122 stride
= get_tcs_in_vertex_dw_stride(ctx
);
1123 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
1127 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1129 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1130 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1135 /* Add the constant index to the indirect index */
1136 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1137 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1139 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1145 names
= info
->input_semantic_name
;
1146 indices
= info
->input_semantic_index
;
1148 names
= info
->output_semantic_name
;
1149 indices
= info
->output_semantic_index
;
1152 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
1153 vertex_index
, param_index
,
1158 LLVMValueRef value
[4];
1159 for (unsigned i
= 0; i
< num_components
; i
++) {
1160 unsigned offset
= i
;
1161 if (llvm_type_is_64bit(ctx
, type
))
1164 offset
+= component
;
1165 value
[i
+ component
] = lshs_lds_load(bld_base
, type
, offset
, dw_addr
);
1168 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1171 static LLVMValueRef
fetch_output_tcs(
1172 struct lp_build_tgsi_context
*bld_base
,
1173 const struct tgsi_full_src_register
*reg
,
1174 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1176 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1177 LLVMValueRef dw_addr
, stride
;
1178 unsigned swizzle
= (swizzle_in
& 0xffff);
1180 if (reg
->Register
.Dimension
) {
1181 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1182 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1183 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1185 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1186 dw_addr
= get_dw_address(ctx
, NULL
, reg
, NULL
, dw_addr
);
1189 return lshs_lds_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
, dw_addr
);
1192 static LLVMValueRef
fetch_input_tes(
1193 struct lp_build_tgsi_context
*bld_base
,
1194 const struct tgsi_full_src_register
*reg
,
1195 enum tgsi_opcode_type type
, unsigned swizzle_in
)
1197 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1198 LLVMValueRef base
, addr
;
1199 unsigned swizzle
= (swizzle_in
& 0xffff);
1201 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1202 addr
= get_tcs_tes_buffer_address_from_reg(ctx
, NULL
, reg
);
1204 return buffer_load(bld_base
, tgsi2llvmtype(bld_base
, type
), swizzle
,
1205 ctx
->tess_offchip_ring
, base
, addr
, true);
1208 LLVMValueRef
si_nir_load_input_tes(struct ac_shader_abi
*abi
,
1210 LLVMValueRef vertex_index
,
1211 LLVMValueRef param_index
,
1212 unsigned const_index
,
1214 unsigned driver_location
,
1216 unsigned num_components
,
1221 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1222 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1223 LLVMValueRef base
, addr
;
1225 driver_location
= driver_location
/ 4;
1227 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1230 /* Add the constant index to the indirect index */
1231 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1232 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1234 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1237 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
1238 param_index
, driver_location
,
1239 info
->input_semantic_name
,
1240 info
->input_semantic_index
,
1243 /* TODO: This will generate rather ordinary llvm code, although it
1244 * should be easy for the optimiser to fix up. In future we might want
1245 * to refactor buffer_load(), but for now this maximises code sharing
1246 * between the NIR and TGSI backends.
1248 LLVMValueRef value
[4];
1249 for (unsigned i
= 0; i
< num_components
; i
++) {
1250 unsigned offset
= i
;
1251 if (llvm_type_is_64bit(ctx
, type
)) {
1254 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
1257 driver_location
+ 1,
1258 info
->input_semantic_name
,
1259 info
->input_semantic_index
,
1263 offset
= offset
% 4;
1266 offset
+= component
;
1267 value
[i
+ component
] = buffer_load(&ctx
->bld_base
, type
, offset
,
1268 ctx
->tess_offchip_ring
, base
, addr
, true);
1271 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1274 static void store_output_tcs(struct lp_build_tgsi_context
*bld_base
,
1275 const struct tgsi_full_instruction
*inst
,
1276 const struct tgsi_opcode_info
*info
,
1278 LLVMValueRef dst
[4])
1280 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1281 const struct tgsi_full_dst_register
*reg
= &inst
->Dst
[index
];
1282 const struct tgsi_shader_info
*sh_info
= &ctx
->shader
->selector
->info
;
1283 unsigned chan_index
;
1284 LLVMValueRef dw_addr
, stride
;
1285 LLVMValueRef buffer
, base
, buf_addr
;
1286 LLVMValueRef values
[4];
1287 bool skip_lds_store
;
1288 bool is_tess_factor
= false, is_tess_inner
= false;
1290 /* Only handle per-patch and per-vertex outputs here.
1291 * Vectors will be lowered to scalars and this function will be called again.
1293 if (reg
->Register
.File
!= TGSI_FILE_OUTPUT
||
1294 (dst
[0] && LLVMGetTypeKind(LLVMTypeOf(dst
[0])) == LLVMVectorTypeKind
)) {
1295 si_llvm_emit_store(bld_base
, inst
, info
, index
, dst
);
1299 if (reg
->Register
.Dimension
) {
1300 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1301 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1302 dw_addr
= get_dw_address(ctx
, reg
, NULL
, stride
, dw_addr
);
1303 skip_lds_store
= !sh_info
->reads_pervertex_outputs
;
1305 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1306 dw_addr
= get_dw_address(ctx
, reg
, NULL
, NULL
, dw_addr
);
1307 skip_lds_store
= !sh_info
->reads_perpatch_outputs
;
1309 if (!reg
->Register
.Indirect
) {
1310 int name
= sh_info
->output_semantic_name
[reg
->Register
.Index
];
1312 /* Always write tess factors into LDS for the TCS epilog. */
1313 if (name
== TGSI_SEMANTIC_TESSINNER
||
1314 name
== TGSI_SEMANTIC_TESSOUTER
) {
1315 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1316 skip_lds_store
= !sh_info
->reads_tessfactor_outputs
&&
1317 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
;
1318 is_tess_factor
= true;
1319 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1324 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
1326 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1327 buf_addr
= get_tcs_tes_buffer_address_from_reg(ctx
, reg
, NULL
);
1329 uint32_t writemask
= reg
->Register
.WriteMask
;
1331 chan_index
= u_bit_scan(&writemask
);
1332 LLVMValueRef value
= dst
[chan_index
];
1334 if (inst
->Instruction
.Saturate
)
1335 value
= ac_build_clamp(&ctx
->ac
, value
);
1337 /* Skip LDS stores if there is no LDS read of this output. */
1338 if (!skip_lds_store
)
1339 lshs_lds_store(ctx
, chan_index
, dw_addr
, value
);
1341 value
= ac_to_integer(&ctx
->ac
, value
);
1342 values
[chan_index
] = value
;
1344 if (reg
->Register
.WriteMask
!= 0xF && !is_tess_factor
) {
1345 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1347 4 * chan_index
, 1, 0, false);
1350 /* Write tess factors into VGPRs for the epilog. */
1351 if (is_tess_factor
&&
1352 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
1353 if (!is_tess_inner
) {
1354 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1355 ctx
->invoc0_tess_factors
[chan_index
]);
1356 } else if (chan_index
< 2) {
1357 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1358 ctx
->invoc0_tess_factors
[4 + chan_index
]);
1363 if (reg
->Register
.WriteMask
== 0xF && !is_tess_factor
) {
1364 LLVMValueRef value
= ac_build_gather_values(&ctx
->ac
,
1366 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buf_addr
,
1367 base
, 0, 1, 0, false);
1371 static void si_nir_store_output_tcs(struct ac_shader_abi
*abi
,
1372 const struct nir_variable
*var
,
1373 LLVMValueRef vertex_index
,
1374 LLVMValueRef param_index
,
1375 unsigned const_index
,
1379 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1380 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1381 const unsigned component
= var
->data
.location_frac
;
1382 const bool is_patch
= var
->data
.patch
;
1383 unsigned driver_location
= var
->data
.driver_location
;
1384 LLVMValueRef dw_addr
, stride
;
1385 LLVMValueRef buffer
, base
, addr
;
1386 LLVMValueRef values
[8];
1387 bool skip_lds_store
;
1388 bool is_tess_factor
= false, is_tess_inner
= false;
1390 driver_location
= driver_location
/ 4;
1393 /* Add the constant index to the indirect index */
1394 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1395 LLVMConstInt(ctx
->i32
, const_index
, 0), "");
1397 if (const_index
!= 0)
1398 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1402 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1403 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1404 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
1405 vertex_index
, param_index
,
1407 info
->output_semantic_name
,
1408 info
->output_semantic_index
,
1411 skip_lds_store
= !info
->reads_pervertex_outputs
;
1413 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1414 dw_addr
= get_dw_address_from_generic_indices(ctx
, NULL
, dw_addr
,
1415 vertex_index
, param_index
,
1417 info
->output_semantic_name
,
1418 info
->output_semantic_index
,
1421 skip_lds_store
= !info
->reads_perpatch_outputs
;
1424 int name
= info
->output_semantic_name
[driver_location
];
1426 /* Always write tess factors into LDS for the TCS epilog. */
1427 if (name
== TGSI_SEMANTIC_TESSINNER
||
1428 name
== TGSI_SEMANTIC_TESSOUTER
) {
1429 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1430 skip_lds_store
= !info
->reads_tessfactor_outputs
&&
1431 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
;
1432 is_tess_factor
= true;
1433 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1438 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
1440 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1442 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
1443 param_index
, driver_location
,
1444 info
->output_semantic_name
,
1445 info
->output_semantic_index
,
1448 for (unsigned chan
= 0; chan
< 8; chan
++) {
1449 if (!(writemask
& (1 << chan
)))
1451 LLVMValueRef value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- component
);
1453 unsigned buffer_store_offset
= chan
% 4;
1455 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
1458 driver_location
+ 1,
1459 info
->output_semantic_name
,
1460 info
->output_semantic_index
,
1464 /* Skip LDS stores if there is no LDS read of this output. */
1465 if (!skip_lds_store
)
1466 lshs_lds_store(ctx
, chan
, dw_addr
, value
);
1468 value
= ac_to_integer(&ctx
->ac
, value
);
1469 values
[chan
] = value
;
1471 if (writemask
!= 0xF && !is_tess_factor
) {
1472 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1474 4 * buffer_store_offset
,
1478 /* Write tess factors into VGPRs for the epilog. */
1479 if (is_tess_factor
&&
1480 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
1481 if (!is_tess_inner
) {
1482 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1483 ctx
->invoc0_tess_factors
[chan
]);
1484 } else if (chan
< 2) {
1485 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1486 ctx
->invoc0_tess_factors
[4 + chan
]);
1491 if (writemask
== 0xF && !is_tess_factor
) {
1492 LLVMValueRef value
= ac_build_gather_values(&ctx
->ac
,
1494 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, addr
,
1495 base
, 0, 1, 0, false);
1499 LLVMValueRef
si_llvm_load_input_gs(struct ac_shader_abi
*abi
,
1500 unsigned input_index
,
1501 unsigned vtx_offset_param
,
1505 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1506 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
1507 struct si_shader
*shader
= ctx
->shader
;
1508 LLVMValueRef vtx_offset
, soffset
;
1509 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1510 unsigned semantic_name
= info
->input_semantic_name
[input_index
];
1511 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1515 param
= si_shader_io_get_unique_index(semantic_name
, semantic_index
, false);
1517 /* GFX9 has the ESGS ring in LDS. */
1518 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
1519 unsigned index
= vtx_offset_param
;
1521 switch (index
/ 2) {
1523 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx01_offset
,
1524 index
% 2 ? 16 : 0, 16);
1527 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx23_offset
,
1528 index
% 2 ? 16 : 0, 16);
1531 vtx_offset
= si_unpack_param(ctx
, ctx
->param_gs_vtx45_offset
,
1532 index
% 2 ? 16 : 0, 16);
1539 unsigned offset
= param
* 4 + swizzle
;
1540 vtx_offset
= LLVMBuildAdd(ctx
->ac
.builder
, vtx_offset
,
1541 LLVMConstInt(ctx
->i32
, offset
, false), "");
1543 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->esgs_ring
, vtx_offset
);
1544 LLVMValueRef value
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1545 if (llvm_type_is_64bit(ctx
, type
)) {
1546 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
,
1547 &ctx
->ac
.i32_1
, 1, "");
1548 LLVMValueRef values
[2] = {
1550 LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "")
1552 value
= ac_build_gather_values(&ctx
->ac
, values
, 2);
1554 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1557 /* GFX6: input load from the ESGS ring in memory. */
1558 if (swizzle
== ~0) {
1559 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1561 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1562 values
[chan
] = si_llvm_load_input_gs(abi
, input_index
, vtx_offset_param
,
1565 return ac_build_gather_values(&ctx
->ac
, values
,
1569 /* Get the vertex offset parameter on GFX6. */
1570 LLVMValueRef gs_vtx_offset
= ctx
->gs_vtx_offset
[vtx_offset_param
];
1572 vtx_offset
= LLVMBuildMul(ctx
->ac
.builder
, gs_vtx_offset
,
1573 LLVMConstInt(ctx
->i32
, 4, 0), "");
1575 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
) * 256, 0);
1577 value
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1, ctx
->i32_0
,
1578 vtx_offset
, soffset
, 0, 1, 0, true, false);
1579 if (llvm_type_is_64bit(ctx
, type
)) {
1580 LLVMValueRef value2
;
1581 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
+ 1) * 256, 0);
1583 value2
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1,
1584 ctx
->i32_0
, vtx_offset
, soffset
,
1585 0, 1, 0, true, false);
1586 return si_llvm_emit_fetch_64bit(bld_base
, type
, value
, value2
);
1588 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1591 static LLVMValueRef
si_nir_load_input_gs(struct ac_shader_abi
*abi
,
1593 unsigned driver_location
,
1595 unsigned num_components
,
1596 unsigned vertex_index
,
1597 unsigned const_index
,
1600 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1602 LLVMValueRef value
[4];
1603 for (unsigned i
= 0; i
< num_components
; i
++) {
1604 unsigned offset
= i
;
1605 if (llvm_type_is_64bit(ctx
, type
))
1608 offset
+= component
;
1609 value
[i
+ component
] = si_llvm_load_input_gs(&ctx
->abi
, driver_location
/ 4,
1610 vertex_index
, type
, offset
);
1613 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1616 static LLVMValueRef
fetch_input_gs(
1617 struct lp_build_tgsi_context
*bld_base
,
1618 const struct tgsi_full_src_register
*reg
,
1619 enum tgsi_opcode_type type
,
1620 unsigned swizzle_in
)
1622 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1623 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
1624 unsigned swizzle
= swizzle_in
& 0xffff;
1626 unsigned semantic_name
= info
->input_semantic_name
[reg
->Register
.Index
];
1627 if (swizzle
!= ~0 && semantic_name
== TGSI_SEMANTIC_PRIMID
)
1628 return si_get_primitive_id(ctx
, swizzle
);
1630 if (!reg
->Register
.Dimension
)
1633 return si_llvm_load_input_gs(&ctx
->abi
, reg
->Register
.Index
,
1634 reg
->Dimension
.Index
,
1635 tgsi2llvmtype(bld_base
, type
),
1639 static int lookup_interp_param_index(unsigned interpolate
, unsigned location
)
1641 switch (interpolate
) {
1642 case TGSI_INTERPOLATE_CONSTANT
:
1645 case TGSI_INTERPOLATE_LINEAR
:
1646 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1647 return SI_PARAM_LINEAR_SAMPLE
;
1648 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1649 return SI_PARAM_LINEAR_CENTROID
;
1651 return SI_PARAM_LINEAR_CENTER
;
1653 case TGSI_INTERPOLATE_COLOR
:
1654 case TGSI_INTERPOLATE_PERSPECTIVE
:
1655 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1656 return SI_PARAM_PERSP_SAMPLE
;
1657 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1658 return SI_PARAM_PERSP_CENTROID
;
1660 return SI_PARAM_PERSP_CENTER
;
1663 fprintf(stderr
, "Warning: Unhandled interpolation mode.\n");
1668 static LLVMValueRef
si_build_fs_interp(struct si_shader_context
*ctx
,
1669 unsigned attr_index
, unsigned chan
,
1670 LLVMValueRef prim_mask
,
1671 LLVMValueRef i
, LLVMValueRef j
)
1674 return ac_build_fs_interp(&ctx
->ac
,
1675 LLVMConstInt(ctx
->i32
, chan
, 0),
1676 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1679 return ac_build_fs_interp_mov(&ctx
->ac
,
1680 LLVMConstInt(ctx
->i32
, 2, 0), /* P0 */
1681 LLVMConstInt(ctx
->i32
, chan
, 0),
1682 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1687 * Interpolate a fragment shader input.
1689 * @param ctx context
1690 * @param input_index index of the input in hardware
1691 * @param semantic_name TGSI_SEMANTIC_*
1692 * @param semantic_index semantic index
1693 * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset)
1694 * @param colors_read_mask color components read (4 bits for each color, 8 bits in total)
1695 * @param interp_param interpolation weights (i,j)
1696 * @param prim_mask SI_PARAM_PRIM_MASK
1697 * @param face SI_PARAM_FRONT_FACE
1698 * @param result the return value (4 components)
1700 static void interp_fs_input(struct si_shader_context
*ctx
,
1701 unsigned input_index
,
1702 unsigned semantic_name
,
1703 unsigned semantic_index
,
1704 unsigned num_interp_inputs
,
1705 unsigned colors_read_mask
,
1706 LLVMValueRef interp_param
,
1707 LLVMValueRef prim_mask
,
1709 LLVMValueRef result
[4])
1711 LLVMValueRef i
= NULL
, j
= NULL
;
1714 /* fs.constant returns the param from the middle vertex, so it's not
1715 * really useful for flat shading. It's meant to be used for custom
1716 * interpolation (but the intrinsic can't fetch from the other two
1719 * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state
1720 * to do the right thing. The only reason we use fs.constant is that
1721 * fs.interp cannot be used on integers, because they can be equal
1724 * When interp is false we will use fs.constant or for newer llvm,
1725 * amdgcn.interp.mov.
1727 bool interp
= interp_param
!= NULL
;
1730 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
,
1731 LLVMVectorType(ctx
->f32
, 2), "");
1733 i
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1735 j
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1739 if (semantic_name
== TGSI_SEMANTIC_COLOR
&&
1740 ctx
->shader
->key
.part
.ps
.prolog
.color_two_side
) {
1741 LLVMValueRef is_face_positive
;
1743 /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1",
1744 * otherwise it's at offset "num_inputs".
1746 unsigned back_attr_offset
= num_interp_inputs
;
1747 if (semantic_index
== 1 && colors_read_mask
& 0xf)
1748 back_attr_offset
+= 1;
1750 is_face_positive
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
1751 face
, ctx
->i32_0
, "");
1753 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1754 LLVMValueRef front
, back
;
1756 front
= si_build_fs_interp(ctx
,
1759 back
= si_build_fs_interp(ctx
,
1760 back_attr_offset
, chan
,
1763 result
[chan
] = LLVMBuildSelect(ctx
->ac
.builder
,
1769 } else if (semantic_name
== TGSI_SEMANTIC_FOG
) {
1770 result
[0] = si_build_fs_interp(ctx
, input_index
,
1771 0, prim_mask
, i
, j
);
1773 result
[2] = LLVMConstReal(ctx
->f32
, 0.0f
);
1774 result
[3] = LLVMConstReal(ctx
->f32
, 1.0f
);
1776 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1777 result
[chan
] = si_build_fs_interp(ctx
,
1784 void si_llvm_load_input_fs(
1785 struct si_shader_context
*ctx
,
1786 unsigned input_index
,
1787 LLVMValueRef out
[4])
1789 struct si_shader
*shader
= ctx
->shader
;
1790 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1791 LLVMValueRef main_fn
= ctx
->main_fn
;
1792 LLVMValueRef interp_param
= NULL
;
1793 int interp_param_idx
;
1794 enum tgsi_semantic semantic_name
= info
->input_semantic_name
[input_index
];
1795 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1796 enum tgsi_interpolate_mode interp_mode
= info
->input_interpolate
[input_index
];
1797 enum tgsi_interpolate_loc interp_loc
= info
->input_interpolate_loc
[input_index
];
1799 /* Get colors from input VGPRs (set by the prolog). */
1800 if (semantic_name
== TGSI_SEMANTIC_COLOR
) {
1801 unsigned colors_read
= shader
->selector
->info
.colors_read
;
1802 unsigned mask
= colors_read
>> (semantic_index
* 4);
1803 unsigned offset
= SI_PARAM_POS_FIXED_PT
+ 1 +
1804 (semantic_index
? util_bitcount(colors_read
& 0xf) : 0);
1805 LLVMValueRef undef
= LLVMGetUndef(ctx
->f32
);
1807 out
[0] = mask
& 0x1 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1808 out
[1] = mask
& 0x2 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1809 out
[2] = mask
& 0x4 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1810 out
[3] = mask
& 0x8 ? LLVMGetParam(main_fn
, offset
++) : undef
;
1814 interp_param_idx
= lookup_interp_param_index(interp_mode
, interp_loc
);
1815 if (interp_param_idx
== -1)
1817 else if (interp_param_idx
) {
1818 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
1821 interp_fs_input(ctx
, input_index
, semantic_name
,
1822 semantic_index
, 0, /* this param is unused */
1823 shader
->selector
->info
.colors_read
, interp_param
,
1825 LLVMGetParam(main_fn
, SI_PARAM_FRONT_FACE
),
1829 static void declare_input_fs(
1830 struct si_shader_context
*ctx
,
1831 unsigned input_index
,
1832 const struct tgsi_full_declaration
*decl
,
1833 LLVMValueRef out
[4])
1835 si_llvm_load_input_fs(ctx
, input_index
, out
);
1838 LLVMValueRef
si_get_sample_id(struct si_shader_context
*ctx
)
1840 return si_unpack_param(ctx
, SI_PARAM_ANCILLARY
, 8, 4);
1843 static LLVMValueRef
get_base_vertex(struct ac_shader_abi
*abi
)
1845 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1847 /* For non-indexed draws, the base vertex set by the driver
1848 * (for direct draws) or the CP (for indirect draws) is the
1849 * first vertex ID, but GLSL expects 0 to be returned.
1851 LLVMValueRef vs_state
= LLVMGetParam(ctx
->main_fn
,
1852 ctx
->param_vs_state_bits
);
1853 LLVMValueRef indexed
;
1855 indexed
= LLVMBuildLShr(ctx
->ac
.builder
, vs_state
, ctx
->i32_1
, "");
1856 indexed
= LLVMBuildTrunc(ctx
->ac
.builder
, indexed
, ctx
->i1
, "");
1858 return LLVMBuildSelect(ctx
->ac
.builder
, indexed
, ctx
->abi
.base_vertex
,
1862 static LLVMValueRef
get_block_size(struct ac_shader_abi
*abi
)
1864 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1866 LLVMValueRef values
[3];
1867 LLVMValueRef result
;
1869 unsigned *properties
= ctx
->shader
->selector
->info
.properties
;
1871 if (properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] != 0) {
1872 unsigned sizes
[3] = {
1873 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
],
1874 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
],
1875 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
]
1878 for (i
= 0; i
< 3; ++i
)
1879 values
[i
] = LLVMConstInt(ctx
->i32
, sizes
[i
], 0);
1881 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
1883 result
= LLVMGetParam(ctx
->main_fn
, ctx
->param_block_size
);
1890 * Load a dword from a constant buffer.
1892 static LLVMValueRef
buffer_load_const(struct si_shader_context
*ctx
,
1893 LLVMValueRef resource
,
1894 LLVMValueRef offset
)
1896 return ac_build_buffer_load(&ctx
->ac
, resource
, 1, NULL
, offset
, NULL
,
1897 0, 0, 0, true, true);
1900 static LLVMValueRef
load_sample_position(struct ac_shader_abi
*abi
, LLVMValueRef sample_id
)
1902 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1903 LLVMValueRef desc
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
1904 LLVMValueRef buf_index
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_SAMPLE_POSITIONS
, 0);
1905 LLVMValueRef resource
= ac_build_load_to_sgpr(&ctx
->ac
, desc
, buf_index
);
1907 /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */
1908 LLVMValueRef offset0
= LLVMBuildMul(ctx
->ac
.builder
, sample_id
, LLVMConstInt(ctx
->i32
, 8, 0), "");
1909 LLVMValueRef offset1
= LLVMBuildAdd(ctx
->ac
.builder
, offset0
, LLVMConstInt(ctx
->i32
, 4, 0), "");
1911 LLVMValueRef pos
[4] = {
1912 buffer_load_const(ctx
, resource
, offset0
),
1913 buffer_load_const(ctx
, resource
, offset1
),
1914 LLVMConstReal(ctx
->f32
, 0),
1915 LLVMConstReal(ctx
->f32
, 0)
1918 return ac_build_gather_values(&ctx
->ac
, pos
, 4);
1921 static LLVMValueRef
load_sample_mask_in(struct ac_shader_abi
*abi
)
1923 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1924 return ac_to_integer(&ctx
->ac
, abi
->sample_coverage
);
1927 static LLVMValueRef
si_load_tess_coord(struct ac_shader_abi
*abi
)
1929 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1930 LLVMValueRef coord
[4] = {
1931 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_u
),
1932 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_v
),
1937 /* For triangles, the vector should be (u, v, 1-u-v). */
1938 if (ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TES_PRIM_MODE
] ==
1939 PIPE_PRIM_TRIANGLES
) {
1940 coord
[2] = LLVMBuildFSub(ctx
->ac
.builder
, ctx
->ac
.f32_1
,
1941 LLVMBuildFAdd(ctx
->ac
.builder
,
1942 coord
[0], coord
[1], ""), "");
1944 return ac_build_gather_values(&ctx
->ac
, coord
, 4);
1947 static LLVMValueRef
load_tess_level(struct si_shader_context
*ctx
,
1948 unsigned semantic_name
)
1950 LLVMValueRef base
, addr
;
1952 int param
= si_shader_io_get_unique_index_patch(semantic_name
, 0);
1954 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1955 addr
= get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
), NULL
,
1956 LLVMConstInt(ctx
->i32
, param
, 0));
1958 return buffer_load(&ctx
->bld_base
, ctx
->f32
,
1959 ~0, ctx
->tess_offchip_ring
, base
, addr
, true);
1963 static LLVMValueRef
si_load_tess_level(struct ac_shader_abi
*abi
,
1964 unsigned varying_id
)
1966 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1967 unsigned semantic_name
;
1969 switch (varying_id
) {
1970 case VARYING_SLOT_TESS_LEVEL_INNER
:
1971 semantic_name
= TGSI_SEMANTIC_TESSINNER
;
1973 case VARYING_SLOT_TESS_LEVEL_OUTER
:
1974 semantic_name
= TGSI_SEMANTIC_TESSOUTER
;
1977 unreachable("unknown tess level");
1980 return load_tess_level(ctx
, semantic_name
);
1984 static LLVMValueRef
si_load_patch_vertices_in(struct ac_shader_abi
*abi
)
1986 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1987 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
1988 return si_unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 13, 6);
1989 else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
)
1990 return get_num_tcs_out_vertices(ctx
);
1992 unreachable("invalid shader stage for TGSI_SEMANTIC_VERTICESIN");
1995 void si_load_system_value(struct si_shader_context
*ctx
,
1997 const struct tgsi_full_declaration
*decl
)
1999 LLVMValueRef value
= 0;
2001 assert(index
< RADEON_LLVM_MAX_SYSTEM_VALUES
);
2003 switch (decl
->Semantic
.Name
) {
2004 case TGSI_SEMANTIC_INSTANCEID
:
2005 value
= ctx
->abi
.instance_id
;
2008 case TGSI_SEMANTIC_VERTEXID
:
2009 value
= LLVMBuildAdd(ctx
->ac
.builder
,
2011 ctx
->abi
.base_vertex
, "");
2014 case TGSI_SEMANTIC_VERTEXID_NOBASE
:
2015 /* Unused. Clarify the meaning in indexed vs. non-indexed
2016 * draws if this is ever used again. */
2020 case TGSI_SEMANTIC_BASEVERTEX
:
2021 value
= get_base_vertex(&ctx
->abi
);
2024 case TGSI_SEMANTIC_BASEINSTANCE
:
2025 value
= ctx
->abi
.start_instance
;
2028 case TGSI_SEMANTIC_DRAWID
:
2029 value
= ctx
->abi
.draw_id
;
2032 case TGSI_SEMANTIC_INVOCATIONID
:
2033 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
2034 value
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
2035 else if (ctx
->type
== PIPE_SHADER_GEOMETRY
)
2036 value
= ctx
->abi
.gs_invocation_id
;
2038 assert(!"INVOCATIONID not implemented");
2041 case TGSI_SEMANTIC_POSITION
:
2043 LLVMValueRef pos
[4] = {
2044 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
2045 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
2046 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Z_FLOAT
),
2047 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
2048 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_W_FLOAT
)),
2050 value
= ac_build_gather_values(&ctx
->ac
, pos
, 4);
2054 case TGSI_SEMANTIC_FACE
:
2055 value
= ctx
->abi
.front_face
;
2058 case TGSI_SEMANTIC_SAMPLEID
:
2059 value
= si_get_sample_id(ctx
);
2062 case TGSI_SEMANTIC_SAMPLEPOS
: {
2063 LLVMValueRef pos
[4] = {
2064 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
2065 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
2066 LLVMConstReal(ctx
->f32
, 0),
2067 LLVMConstReal(ctx
->f32
, 0)
2069 pos
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2070 pos
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2071 value
= ac_build_gather_values(&ctx
->ac
, pos
, 4);
2075 case TGSI_SEMANTIC_SAMPLEMASK
:
2076 /* This can only occur with the OpenGL Core profile, which
2077 * doesn't support smoothing.
2079 value
= LLVMGetParam(ctx
->main_fn
, SI_PARAM_SAMPLE_COVERAGE
);
2082 case TGSI_SEMANTIC_TESSCOORD
:
2083 value
= si_load_tess_coord(&ctx
->abi
);
2086 case TGSI_SEMANTIC_VERTICESIN
:
2087 value
= si_load_patch_vertices_in(&ctx
->abi
);
2090 case TGSI_SEMANTIC_TESSINNER
:
2091 case TGSI_SEMANTIC_TESSOUTER
:
2092 value
= load_tess_level(ctx
, decl
->Semantic
.Name
);
2095 case TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI
:
2096 case TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
:
2098 LLVMValueRef buf
, slot
, val
[4];
2101 slot
= LLVMConstInt(ctx
->i32
, SI_HS_CONST_DEFAULT_TESS_LEVELS
, 0);
2102 buf
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
2103 buf
= ac_build_load_to_sgpr(&ctx
->ac
, buf
, slot
);
2104 offset
= decl
->Semantic
.Name
== TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
? 4 : 0;
2106 for (i
= 0; i
< 4; i
++)
2107 val
[i
] = buffer_load_const(ctx
, buf
,
2108 LLVMConstInt(ctx
->i32
, (offset
+ i
) * 4, 0));
2109 value
= ac_build_gather_values(&ctx
->ac
, val
, 4);
2113 case TGSI_SEMANTIC_PRIMID
:
2114 value
= si_get_primitive_id(ctx
, 0);
2117 case TGSI_SEMANTIC_GRID_SIZE
:
2118 value
= ctx
->abi
.num_work_groups
;
2121 case TGSI_SEMANTIC_BLOCK_SIZE
:
2122 value
= get_block_size(&ctx
->abi
);
2125 case TGSI_SEMANTIC_BLOCK_ID
:
2127 LLVMValueRef values
[3];
2129 for (int i
= 0; i
< 3; i
++) {
2130 values
[i
] = ctx
->i32_0
;
2131 if (ctx
->abi
.workgroup_ids
[i
]) {
2132 values
[i
] = ctx
->abi
.workgroup_ids
[i
];
2135 value
= ac_build_gather_values(&ctx
->ac
, values
, 3);
2139 case TGSI_SEMANTIC_THREAD_ID
:
2140 value
= ctx
->abi
.local_invocation_ids
;
2143 case TGSI_SEMANTIC_HELPER_INVOCATION
:
2144 value
= ac_build_load_helper_invocation(&ctx
->ac
);
2147 case TGSI_SEMANTIC_SUBGROUP_SIZE
:
2148 value
= LLVMConstInt(ctx
->i32
, 64, 0);
2151 case TGSI_SEMANTIC_SUBGROUP_INVOCATION
:
2152 value
= ac_get_thread_id(&ctx
->ac
);
2155 case TGSI_SEMANTIC_SUBGROUP_EQ_MASK
:
2157 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
2158 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
2159 value
= LLVMBuildShl(ctx
->ac
.builder
, LLVMConstInt(ctx
->i64
, 1, 0), id
, "");
2160 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
2164 case TGSI_SEMANTIC_SUBGROUP_GE_MASK
:
2165 case TGSI_SEMANTIC_SUBGROUP_GT_MASK
:
2166 case TGSI_SEMANTIC_SUBGROUP_LE_MASK
:
2167 case TGSI_SEMANTIC_SUBGROUP_LT_MASK
:
2169 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
2170 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_GT_MASK
||
2171 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
) {
2172 /* All bits set except LSB */
2173 value
= LLVMConstInt(ctx
->i64
, -2, 0);
2176 value
= LLVMConstInt(ctx
->i64
, -1, 0);
2178 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
2179 value
= LLVMBuildShl(ctx
->ac
.builder
, value
, id
, "");
2180 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
||
2181 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LT_MASK
)
2182 value
= LLVMBuildNot(ctx
->ac
.builder
, value
, "");
2183 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
2187 case TGSI_SEMANTIC_CS_USER_DATA
:
2188 value
= LLVMGetParam(ctx
->main_fn
, ctx
->param_cs_user_data
);
2192 assert(!"unknown system value");
2196 ctx
->system_values
[index
] = value
;
2199 void si_declare_compute_memory(struct si_shader_context
*ctx
)
2201 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2202 unsigned lds_size
= sel
->info
.properties
[TGSI_PROPERTY_CS_LOCAL_SIZE
];
2204 LLVMTypeRef i8p
= LLVMPointerType(ctx
->i8
, AC_ADDR_SPACE_LDS
);
2207 assert(!ctx
->ac
.lds
);
2209 var
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
2210 LLVMArrayType(ctx
->i8
, lds_size
),
2213 LLVMSetAlignment(var
, 64 * 1024);
2215 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, var
, i8p
, "");
2218 void si_tgsi_declare_compute_memory(struct si_shader_context
*ctx
,
2219 const struct tgsi_full_declaration
*decl
)
2221 assert(decl
->Declaration
.MemType
== TGSI_MEMORY_TYPE_SHARED
);
2222 assert(decl
->Range
.First
== decl
->Range
.Last
);
2224 si_declare_compute_memory(ctx
);
2227 static LLVMValueRef
load_const_buffer_desc_fast_path(struct si_shader_context
*ctx
)
2230 LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2231 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2233 /* Do the bounds checking with a descriptor, because
2234 * doing computation and manual bounds checking of 64-bit
2235 * addresses generates horrible VALU code with very high
2236 * VGPR usage and very low SIMD occupancy.
2238 ptr
= LLVMBuildPtrToInt(ctx
->ac
.builder
, ptr
, ctx
->ac
.intptr
, "");
2240 LLVMValueRef desc0
, desc1
;
2242 desc1
= LLVMConstInt(ctx
->i32
,
2243 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
2245 LLVMValueRef desc_elems
[] = {
2248 LLVMConstInt(ctx
->i32
, (sel
->info
.const_file_max
[0] + 1) * 16, 0),
2249 LLVMConstInt(ctx
->i32
,
2250 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
2251 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
2252 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
2253 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
2254 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
2255 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
), 0)
2258 return ac_build_gather_values(&ctx
->ac
, desc_elems
, 4);
2261 static LLVMValueRef
load_const_buffer_desc(struct si_shader_context
*ctx
, int i
)
2263 LLVMValueRef list_ptr
= LLVMGetParam(ctx
->main_fn
,
2264 ctx
->param_const_and_shader_buffers
);
2266 return ac_build_load_to_sgpr(&ctx
->ac
, list_ptr
,
2267 LLVMConstInt(ctx
->i32
, si_get_constbuf_slot(i
), 0));
2270 static LLVMValueRef
load_ubo(struct ac_shader_abi
*abi
, LLVMValueRef index
)
2272 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2273 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2275 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2277 if (sel
->info
.const_buffers_declared
== 1 &&
2278 sel
->info
.shader_buffers_declared
== 0) {
2279 return load_const_buffer_desc_fast_path(ctx
);
2282 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_const_buffers
);
2283 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
2284 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
2286 return ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
2290 load_ssbo(struct ac_shader_abi
*abi
, LLVMValueRef index
, bool write
)
2292 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2293 LLVMValueRef rsrc_ptr
= LLVMGetParam(ctx
->main_fn
,
2294 ctx
->param_const_and_shader_buffers
);
2296 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_shader_buffers
);
2297 index
= LLVMBuildSub(ctx
->ac
.builder
,
2298 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
- 1, 0),
2301 return ac_build_load_to_sgpr(&ctx
->ac
, rsrc_ptr
, index
);
2304 static LLVMValueRef
fetch_constant(
2305 struct lp_build_tgsi_context
*bld_base
,
2306 const struct tgsi_full_src_register
*reg
,
2307 enum tgsi_opcode_type type
,
2308 unsigned swizzle_in
)
2310 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2311 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2312 const struct tgsi_ind_register
*ireg
= ®
->Indirect
;
2314 unsigned swizzle
= swizzle_in
& 0xffff;
2316 LLVMValueRef addr
, bufp
;
2318 if (swizzle_in
== LP_CHAN_ALL
) {
2320 LLVMValueRef values
[4];
2321 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; ++chan
)
2322 values
[chan
] = fetch_constant(bld_base
, reg
, type
, chan
);
2324 return ac_build_gather_values(&ctx
->ac
, values
, 4);
2327 /* Split 64-bit loads. */
2328 if (tgsi_type_is_64bit(type
)) {
2329 LLVMValueRef lo
, hi
;
2331 lo
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, swizzle
);
2332 hi
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, (swizzle_in
>> 16));
2333 return si_llvm_emit_fetch_64bit(bld_base
, tgsi2llvmtype(bld_base
, type
),
2337 idx
= reg
->Register
.Index
* 4 + swizzle
;
2338 if (reg
->Register
.Indirect
) {
2339 addr
= si_get_indirect_index(ctx
, ireg
, 16, idx
* 4);
2341 addr
= LLVMConstInt(ctx
->i32
, idx
* 4, 0);
2344 /* Fast path when user data SGPRs point to constant buffer 0 directly. */
2345 if (sel
->info
.const_buffers_declared
== 1 &&
2346 sel
->info
.shader_buffers_declared
== 0) {
2347 LLVMValueRef desc
= load_const_buffer_desc_fast_path(ctx
);
2348 LLVMValueRef result
= buffer_load_const(ctx
, desc
, addr
);
2349 return bitcast(bld_base
, type
, result
);
2352 assert(reg
->Register
.Dimension
);
2353 buf
= reg
->Dimension
.Index
;
2355 if (reg
->Dimension
.Indirect
) {
2356 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2358 index
= si_get_bounded_indirect_index(ctx
, ®
->DimIndirect
,
2359 reg
->Dimension
.Index
,
2360 ctx
->num_const_buffers
);
2361 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
2362 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
2363 bufp
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
2365 bufp
= load_const_buffer_desc(ctx
, buf
);
2367 return bitcast(bld_base
, type
, buffer_load_const(ctx
, bufp
, addr
));
2370 /* Initialize arguments for the shader export intrinsic */
2371 static void si_llvm_init_export_args(struct si_shader_context
*ctx
,
2372 LLVMValueRef
*values
,
2374 struct ac_export_args
*args
)
2376 LLVMValueRef f32undef
= LLVMGetUndef(ctx
->ac
.f32
);
2377 unsigned spi_shader_col_format
= V_028714_SPI_SHADER_32_ABGR
;
2379 bool is_int8
, is_int10
;
2381 /* Default is 0xf. Adjusted below depending on the format. */
2382 args
->enabled_channels
= 0xf; /* writemask */
2384 /* Specify whether the EXEC mask represents the valid mask */
2385 args
->valid_mask
= 0;
2387 /* Specify whether this is the last export */
2390 /* Specify the target we are exporting */
2391 args
->target
= target
;
2393 if (ctx
->type
== PIPE_SHADER_FRAGMENT
) {
2394 const struct si_shader_key
*key
= &ctx
->shader
->key
;
2395 unsigned col_formats
= key
->part
.ps
.epilog
.spi_shader_col_format
;
2396 int cbuf
= target
- V_008DFC_SQ_EXP_MRT
;
2398 assert(cbuf
>= 0 && cbuf
< 8);
2399 spi_shader_col_format
= (col_formats
>> (cbuf
* 4)) & 0xf;
2400 is_int8
= (key
->part
.ps
.epilog
.color_is_int8
>> cbuf
) & 0x1;
2401 is_int10
= (key
->part
.ps
.epilog
.color_is_int10
>> cbuf
) & 0x1;
2404 args
->compr
= false;
2405 args
->out
[0] = f32undef
;
2406 args
->out
[1] = f32undef
;
2407 args
->out
[2] = f32undef
;
2408 args
->out
[3] = f32undef
;
2410 LLVMValueRef (*packf
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2]) = NULL
;
2411 LLVMValueRef (*packi
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2],
2412 unsigned bits
, bool hi
) = NULL
;
2414 switch (spi_shader_col_format
) {
2415 case V_028714_SPI_SHADER_ZERO
:
2416 args
->enabled_channels
= 0; /* writemask */
2417 args
->target
= V_008DFC_SQ_EXP_NULL
;
2420 case V_028714_SPI_SHADER_32_R
:
2421 args
->enabled_channels
= 1; /* writemask */
2422 args
->out
[0] = values
[0];
2425 case V_028714_SPI_SHADER_32_GR
:
2426 args
->enabled_channels
= 0x3; /* writemask */
2427 args
->out
[0] = values
[0];
2428 args
->out
[1] = values
[1];
2431 case V_028714_SPI_SHADER_32_AR
:
2432 args
->enabled_channels
= 0x9; /* writemask */
2433 args
->out
[0] = values
[0];
2434 args
->out
[3] = values
[3];
2437 case V_028714_SPI_SHADER_FP16_ABGR
:
2438 packf
= ac_build_cvt_pkrtz_f16
;
2441 case V_028714_SPI_SHADER_UNORM16_ABGR
:
2442 packf
= ac_build_cvt_pknorm_u16
;
2445 case V_028714_SPI_SHADER_SNORM16_ABGR
:
2446 packf
= ac_build_cvt_pknorm_i16
;
2449 case V_028714_SPI_SHADER_UINT16_ABGR
:
2450 packi
= ac_build_cvt_pk_u16
;
2453 case V_028714_SPI_SHADER_SINT16_ABGR
:
2454 packi
= ac_build_cvt_pk_i16
;
2457 case V_028714_SPI_SHADER_32_ABGR
:
2458 memcpy(&args
->out
[0], values
, sizeof(values
[0]) * 4);
2462 /* Pack f16 or norm_i16/u16. */
2464 for (chan
= 0; chan
< 2; chan
++) {
2465 LLVMValueRef pack_args
[2] = {
2467 values
[2 * chan
+ 1]
2469 LLVMValueRef packed
;
2471 packed
= packf(&ctx
->ac
, pack_args
);
2472 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
2474 args
->compr
= 1; /* COMPR flag */
2478 for (chan
= 0; chan
< 2; chan
++) {
2479 LLVMValueRef pack_args
[2] = {
2480 ac_to_integer(&ctx
->ac
, values
[2 * chan
]),
2481 ac_to_integer(&ctx
->ac
, values
[2 * chan
+ 1])
2483 LLVMValueRef packed
;
2485 packed
= packi(&ctx
->ac
, pack_args
,
2486 is_int8
? 8 : is_int10
? 10 : 16,
2488 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
2490 args
->compr
= 1; /* COMPR flag */
2494 static void si_alpha_test(struct lp_build_tgsi_context
*bld_base
,
2497 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2499 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_NEVER
) {
2500 static LLVMRealPredicate cond_map
[PIPE_FUNC_ALWAYS
+ 1] = {
2501 [PIPE_FUNC_LESS
] = LLVMRealOLT
,
2502 [PIPE_FUNC_EQUAL
] = LLVMRealOEQ
,
2503 [PIPE_FUNC_LEQUAL
] = LLVMRealOLE
,
2504 [PIPE_FUNC_GREATER
] = LLVMRealOGT
,
2505 [PIPE_FUNC_NOTEQUAL
] = LLVMRealONE
,
2506 [PIPE_FUNC_GEQUAL
] = LLVMRealOGE
,
2508 LLVMRealPredicate cond
= cond_map
[ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
];
2511 LLVMValueRef alpha_ref
= LLVMGetParam(ctx
->main_fn
,
2512 SI_PARAM_ALPHA_REF
);
2513 LLVMValueRef alpha_pass
=
2514 LLVMBuildFCmp(ctx
->ac
.builder
, cond
, alpha
, alpha_ref
, "");
2515 ac_build_kill_if_false(&ctx
->ac
, alpha_pass
);
2517 ac_build_kill_if_false(&ctx
->ac
, ctx
->i1false
);
2521 static LLVMValueRef
si_scale_alpha_by_sample_mask(struct lp_build_tgsi_context
*bld_base
,
2523 unsigned samplemask_param
)
2525 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2526 LLVMValueRef coverage
;
2528 /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
2529 coverage
= LLVMGetParam(ctx
->main_fn
,
2531 coverage
= ac_to_integer(&ctx
->ac
, coverage
);
2533 coverage
= ac_build_intrinsic(&ctx
->ac
, "llvm.ctpop.i32",
2535 &coverage
, 1, AC_FUNC_ATTR_READNONE
);
2537 coverage
= LLVMBuildUIToFP(ctx
->ac
.builder
, coverage
,
2540 coverage
= LLVMBuildFMul(ctx
->ac
.builder
, coverage
,
2541 LLVMConstReal(ctx
->f32
,
2542 1.0 / SI_NUM_SMOOTH_AA_SAMPLES
), "");
2544 return LLVMBuildFMul(ctx
->ac
.builder
, alpha
, coverage
, "");
2547 static void si_llvm_emit_clipvertex(struct si_shader_context
*ctx
,
2548 struct ac_export_args
*pos
, LLVMValueRef
*out_elts
)
2552 unsigned const_chan
;
2553 LLVMValueRef base_elt
;
2554 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
2555 LLVMValueRef constbuf_index
= LLVMConstInt(ctx
->i32
,
2556 SI_VS_CONST_CLIP_PLANES
, 0);
2557 LLVMValueRef const_resource
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, constbuf_index
);
2559 for (reg_index
= 0; reg_index
< 2; reg_index
++) {
2560 struct ac_export_args
*args
= &pos
[2 + reg_index
];
2565 args
->out
[3] = LLVMConstReal(ctx
->f32
, 0.0f
);
2567 /* Compute dot products of position and user clip plane vectors */
2568 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
2569 for (const_chan
= 0; const_chan
< TGSI_NUM_CHANNELS
; const_chan
++) {
2571 LLVMConstInt(ctx
->i32
, ((reg_index
* 4 + chan
) * 4 +
2572 const_chan
) * 4, 0);
2573 base_elt
= buffer_load_const(ctx
, const_resource
,
2575 args
->out
[chan
] = ac_build_fmad(&ctx
->ac
, base_elt
,
2576 out_elts
[const_chan
], args
->out
[chan
]);
2580 args
->enabled_channels
= 0xf;
2581 args
->valid_mask
= 0;
2583 args
->target
= V_008DFC_SQ_EXP_POS
+ 2 + reg_index
;
2588 static void si_dump_streamout(struct pipe_stream_output_info
*so
)
2592 if (so
->num_outputs
)
2593 fprintf(stderr
, "STREAMOUT\n");
2595 for (i
= 0; i
< so
->num_outputs
; i
++) {
2596 unsigned mask
= ((1 << so
->output
[i
].num_components
) - 1) <<
2597 so
->output
[i
].start_component
;
2598 fprintf(stderr
, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n",
2599 i
, so
->output
[i
].output_buffer
,
2600 so
->output
[i
].dst_offset
, so
->output
[i
].dst_offset
+ so
->output
[i
].num_components
- 1,
2601 so
->output
[i
].register_index
,
2602 mask
& 1 ? "x" : "",
2603 mask
& 2 ? "y" : "",
2604 mask
& 4 ? "z" : "",
2605 mask
& 8 ? "w" : "");
2609 void si_emit_streamout_output(struct si_shader_context
*ctx
,
2610 LLVMValueRef
const *so_buffers
,
2611 LLVMValueRef
const *so_write_offsets
,
2612 struct pipe_stream_output
*stream_out
,
2613 struct si_shader_output_values
*shader_out
)
2615 unsigned buf_idx
= stream_out
->output_buffer
;
2616 unsigned start
= stream_out
->start_component
;
2617 unsigned num_comps
= stream_out
->num_components
;
2618 LLVMValueRef out
[4];
2620 assert(num_comps
&& num_comps
<= 4);
2621 if (!num_comps
|| num_comps
> 4)
2624 /* Load the output as int. */
2625 for (int j
= 0; j
< num_comps
; j
++) {
2626 assert(stream_out
->stream
== shader_out
->vertex_stream
[start
+ j
]);
2628 out
[j
] = ac_to_integer(&ctx
->ac
, shader_out
->values
[start
+ j
]);
2631 /* Pack the output. */
2632 LLVMValueRef vdata
= NULL
;
2634 switch (num_comps
) {
2635 case 1: /* as i32 */
2638 case 2: /* as v2i32 */
2639 case 3: /* as v3i32 */
2640 if (ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false)) {
2641 vdata
= ac_build_gather_values(&ctx
->ac
, out
, num_comps
);
2644 /* as v4i32 (aligned to 4) */
2645 out
[3] = LLVMGetUndef(ctx
->i32
);
2647 case 4: /* as v4i32 */
2648 vdata
= ac_build_gather_values(&ctx
->ac
, out
, util_next_power_of_two(num_comps
));
2652 ac_build_buffer_store_dword(&ctx
->ac
, so_buffers
[buf_idx
],
2654 so_write_offsets
[buf_idx
],
2656 stream_out
->dst_offset
* 4, 1, 1, false);
2660 * Write streamout data to buffers for vertex stream @p stream (different
2661 * vertex streams can occur for GS copy shaders).
2663 static void si_llvm_emit_streamout(struct si_shader_context
*ctx
,
2664 struct si_shader_output_values
*outputs
,
2665 unsigned noutput
, unsigned stream
)
2667 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2668 struct pipe_stream_output_info
*so
= &sel
->so
;
2669 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2671 struct lp_build_if_state if_ctx
;
2673 /* Get bits [22:16], i.e. (so_param >> 16) & 127; */
2674 LLVMValueRef so_vtx_count
=
2675 si_unpack_param(ctx
, ctx
->param_streamout_config
, 16, 7);
2677 LLVMValueRef tid
= ac_get_thread_id(&ctx
->ac
);
2679 /* can_emit = tid < so_vtx_count; */
2680 LLVMValueRef can_emit
=
2681 LLVMBuildICmp(builder
, LLVMIntULT
, tid
, so_vtx_count
, "");
2683 /* Emit the streamout code conditionally. This actually avoids
2684 * out-of-bounds buffer access. The hw tells us via the SGPR
2685 * (so_vtx_count) which threads are allowed to emit streamout data. */
2686 lp_build_if(&if_ctx
, &ctx
->gallivm
, can_emit
);
2688 /* The buffer offset is computed as follows:
2689 * ByteOffset = streamout_offset[buffer_id]*4 +
2690 * (streamout_write_index + thread_id)*stride[buffer_id] +
2694 LLVMValueRef so_write_index
=
2695 LLVMGetParam(ctx
->main_fn
,
2696 ctx
->param_streamout_write_index
);
2698 /* Compute (streamout_write_index + thread_id). */
2699 so_write_index
= LLVMBuildAdd(builder
, so_write_index
, tid
, "");
2701 /* Load the descriptor and compute the write offset for each
2702 * enabled buffer. */
2703 LLVMValueRef so_write_offset
[4] = {};
2704 LLVMValueRef so_buffers
[4];
2705 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
2706 ctx
->param_rw_buffers
);
2708 for (i
= 0; i
< 4; i
++) {
2712 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
,
2713 SI_VS_STREAMOUT_BUF0
+ i
, 0);
2715 so_buffers
[i
] = ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
2717 LLVMValueRef so_offset
= LLVMGetParam(ctx
->main_fn
,
2718 ctx
->param_streamout_offset
[i
]);
2719 so_offset
= LLVMBuildMul(builder
, so_offset
, LLVMConstInt(ctx
->i32
, 4, 0), "");
2721 so_write_offset
[i
] = ac_build_imad(&ctx
->ac
, so_write_index
,
2722 LLVMConstInt(ctx
->i32
, so
->stride
[i
]*4, 0),
2726 /* Write streamout data. */
2727 for (i
= 0; i
< so
->num_outputs
; i
++) {
2728 unsigned reg
= so
->output
[i
].register_index
;
2733 if (stream
!= so
->output
[i
].stream
)
2736 si_emit_streamout_output(ctx
, so_buffers
, so_write_offset
,
2737 &so
->output
[i
], &outputs
[reg
]);
2740 lp_build_endif(&if_ctx
);
2743 static void si_export_param(struct si_shader_context
*ctx
, unsigned index
,
2744 LLVMValueRef
*values
)
2746 struct ac_export_args args
;
2748 si_llvm_init_export_args(ctx
, values
,
2749 V_008DFC_SQ_EXP_PARAM
+ index
, &args
);
2750 ac_build_export(&ctx
->ac
, &args
);
2753 static void si_build_param_exports(struct si_shader_context
*ctx
,
2754 struct si_shader_output_values
*outputs
,
2757 struct si_shader
*shader
= ctx
->shader
;
2758 unsigned param_count
= 0;
2760 for (unsigned i
= 0; i
< noutput
; i
++) {
2761 unsigned semantic_name
= outputs
[i
].semantic_name
;
2762 unsigned semantic_index
= outputs
[i
].semantic_index
;
2764 if (outputs
[i
].vertex_stream
[0] != 0 &&
2765 outputs
[i
].vertex_stream
[1] != 0 &&
2766 outputs
[i
].vertex_stream
[2] != 0 &&
2767 outputs
[i
].vertex_stream
[3] != 0)
2770 switch (semantic_name
) {
2771 case TGSI_SEMANTIC_LAYER
:
2772 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2773 case TGSI_SEMANTIC_CLIPDIST
:
2774 case TGSI_SEMANTIC_COLOR
:
2775 case TGSI_SEMANTIC_BCOLOR
:
2776 case TGSI_SEMANTIC_PRIMID
:
2777 case TGSI_SEMANTIC_FOG
:
2778 case TGSI_SEMANTIC_TEXCOORD
:
2779 case TGSI_SEMANTIC_GENERIC
:
2785 if ((semantic_name
!= TGSI_SEMANTIC_GENERIC
||
2786 semantic_index
< SI_MAX_IO_GENERIC
) &&
2787 shader
->key
.opt
.kill_outputs
&
2788 (1ull << si_shader_io_get_unique_index(semantic_name
,
2789 semantic_index
, true)))
2792 si_export_param(ctx
, param_count
, outputs
[i
].values
);
2794 assert(i
< ARRAY_SIZE(shader
->info
.vs_output_param_offset
));
2795 shader
->info
.vs_output_param_offset
[i
] = param_count
++;
2798 shader
->info
.nr_param_exports
= param_count
;
2802 * Vertex color clamping.
2804 * This uses a state constant loaded in a user data SGPR and
2805 * an IF statement is added that clamps all colors if the constant
2808 static void si_vertex_color_clamping(struct si_shader_context
*ctx
,
2809 struct si_shader_output_values
*outputs
,
2812 LLVMValueRef addr
[SI_MAX_VS_OUTPUTS
][4];
2813 bool has_colors
= false;
2815 /* Store original colors to alloca variables. */
2816 for (unsigned i
= 0; i
< noutput
; i
++) {
2817 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2818 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2821 for (unsigned j
= 0; j
< 4; j
++) {
2822 addr
[i
][j
] = ac_build_alloca_undef(&ctx
->ac
, ctx
->f32
, "");
2823 LLVMBuildStore(ctx
->ac
.builder
, outputs
[i
].values
[j
], addr
[i
][j
]);
2831 /* The state is in the first bit of the user SGPR. */
2832 LLVMValueRef cond
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vs_state_bits
);
2833 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->i1
, "");
2835 struct lp_build_if_state if_ctx
;
2836 lp_build_if(&if_ctx
, &ctx
->gallivm
, cond
);
2838 /* Store clamped colors to alloca variables within the conditional block. */
2839 for (unsigned i
= 0; i
< noutput
; i
++) {
2840 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2841 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2844 for (unsigned j
= 0; j
< 4; j
++) {
2845 LLVMBuildStore(ctx
->ac
.builder
,
2846 ac_build_clamp(&ctx
->ac
, outputs
[i
].values
[j
]),
2850 lp_build_endif(&if_ctx
);
2852 /* Load clamped colors */
2853 for (unsigned i
= 0; i
< noutput
; i
++) {
2854 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2855 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2858 for (unsigned j
= 0; j
< 4; j
++) {
2859 outputs
[i
].values
[j
] =
2860 LLVMBuildLoad(ctx
->ac
.builder
, addr
[i
][j
], "");
2865 /* Generate export instructions for hardware VS shader stage or NGG GS stage
2866 * (position and parameter data only).
2868 void si_llvm_export_vs(struct si_shader_context
*ctx
,
2869 struct si_shader_output_values
*outputs
,
2872 struct si_shader
*shader
= ctx
->shader
;
2873 struct ac_export_args pos_args
[4] = {};
2874 LLVMValueRef psize_value
= NULL
, edgeflag_value
= NULL
, layer_value
= NULL
, viewport_index_value
= NULL
;
2878 si_vertex_color_clamping(ctx
, outputs
, noutput
);
2880 /* Build position exports. */
2881 for (i
= 0; i
< noutput
; i
++) {
2882 switch (outputs
[i
].semantic_name
) {
2883 case TGSI_SEMANTIC_POSITION
:
2884 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2885 V_008DFC_SQ_EXP_POS
, &pos_args
[0]);
2887 case TGSI_SEMANTIC_PSIZE
:
2888 psize_value
= outputs
[i
].values
[0];
2890 case TGSI_SEMANTIC_LAYER
:
2891 layer_value
= outputs
[i
].values
[0];
2893 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2894 viewport_index_value
= outputs
[i
].values
[0];
2896 case TGSI_SEMANTIC_EDGEFLAG
:
2897 edgeflag_value
= outputs
[i
].values
[0];
2899 case TGSI_SEMANTIC_CLIPDIST
:
2900 if (!shader
->key
.opt
.clip_disable
) {
2901 unsigned index
= 2 + outputs
[i
].semantic_index
;
2902 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2903 V_008DFC_SQ_EXP_POS
+ index
,
2907 case TGSI_SEMANTIC_CLIPVERTEX
:
2908 if (!shader
->key
.opt
.clip_disable
) {
2909 si_llvm_emit_clipvertex(ctx
, pos_args
,
2916 /* We need to add the position output manually if it's missing. */
2917 if (!pos_args
[0].out
[0]) {
2918 pos_args
[0].enabled_channels
= 0xf; /* writemask */
2919 pos_args
[0].valid_mask
= 0; /* EXEC mask */
2920 pos_args
[0].done
= 0; /* last export? */
2921 pos_args
[0].target
= V_008DFC_SQ_EXP_POS
;
2922 pos_args
[0].compr
= 0; /* COMPR flag */
2923 pos_args
[0].out
[0] = ctx
->ac
.f32_0
; /* X */
2924 pos_args
[0].out
[1] = ctx
->ac
.f32_0
; /* Y */
2925 pos_args
[0].out
[2] = ctx
->ac
.f32_0
; /* Z */
2926 pos_args
[0].out
[3] = ctx
->ac
.f32_1
; /* W */
2929 /* Write the misc vector (point size, edgeflag, layer, viewport). */
2930 if (shader
->selector
->info
.writes_psize
||
2931 shader
->selector
->info
.writes_edgeflag
||
2932 shader
->selector
->info
.writes_viewport_index
||
2933 shader
->selector
->info
.writes_layer
) {
2934 pos_args
[1].enabled_channels
= shader
->selector
->info
.writes_psize
|
2935 (shader
->selector
->info
.writes_edgeflag
<< 1) |
2936 (shader
->selector
->info
.writes_layer
<< 2);
2938 pos_args
[1].valid_mask
= 0; /* EXEC mask */
2939 pos_args
[1].done
= 0; /* last export? */
2940 pos_args
[1].target
= V_008DFC_SQ_EXP_POS
+ 1;
2941 pos_args
[1].compr
= 0; /* COMPR flag */
2942 pos_args
[1].out
[0] = ctx
->ac
.f32_0
; /* X */
2943 pos_args
[1].out
[1] = ctx
->ac
.f32_0
; /* Y */
2944 pos_args
[1].out
[2] = ctx
->ac
.f32_0
; /* Z */
2945 pos_args
[1].out
[3] = ctx
->ac
.f32_0
; /* W */
2947 if (shader
->selector
->info
.writes_psize
)
2948 pos_args
[1].out
[0] = psize_value
;
2950 if (shader
->selector
->info
.writes_edgeflag
) {
2951 /* The output is a float, but the hw expects an integer
2952 * with the first bit containing the edge flag. */
2953 edgeflag_value
= LLVMBuildFPToUI(ctx
->ac
.builder
,
2956 edgeflag_value
= ac_build_umin(&ctx
->ac
,
2960 /* The LLVM intrinsic expects a float. */
2961 pos_args
[1].out
[1] = ac_to_float(&ctx
->ac
, edgeflag_value
);
2964 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
2965 /* GFX9 has the layer in out.z[10:0] and the viewport
2966 * index in out.z[19:16].
2968 if (shader
->selector
->info
.writes_layer
)
2969 pos_args
[1].out
[2] = layer_value
;
2971 if (shader
->selector
->info
.writes_viewport_index
) {
2972 LLVMValueRef v
= viewport_index_value
;
2974 v
= ac_to_integer(&ctx
->ac
, v
);
2975 v
= LLVMBuildShl(ctx
->ac
.builder
, v
,
2976 LLVMConstInt(ctx
->i32
, 16, 0), "");
2977 v
= LLVMBuildOr(ctx
->ac
.builder
, v
,
2978 ac_to_integer(&ctx
->ac
, pos_args
[1].out
[2]), "");
2979 pos_args
[1].out
[2] = ac_to_float(&ctx
->ac
, v
);
2980 pos_args
[1].enabled_channels
|= 1 << 2;
2983 if (shader
->selector
->info
.writes_layer
)
2984 pos_args
[1].out
[2] = layer_value
;
2986 if (shader
->selector
->info
.writes_viewport_index
) {
2987 pos_args
[1].out
[3] = viewport_index_value
;
2988 pos_args
[1].enabled_channels
|= 1 << 3;
2993 for (i
= 0; i
< 4; i
++)
2994 if (pos_args
[i
].out
[0])
2995 shader
->info
.nr_pos_exports
++;
2998 for (i
= 0; i
< 4; i
++) {
2999 if (!pos_args
[i
].out
[0])
3002 /* Specify the target we are exporting */
3003 pos_args
[i
].target
= V_008DFC_SQ_EXP_POS
+ pos_idx
++;
3005 if (pos_idx
== shader
->info
.nr_pos_exports
)
3006 /* Specify that this is the last export */
3007 pos_args
[i
].done
= 1;
3009 ac_build_export(&ctx
->ac
, &pos_args
[i
]);
3012 /* Build parameter exports. */
3013 si_build_param_exports(ctx
, outputs
, noutput
);
3017 * Forward all outputs from the vertex shader to the TES. This is only used
3018 * for the fixed function TCS.
3020 static void si_copy_tcs_inputs(struct lp_build_tgsi_context
*bld_base
)
3022 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3023 LLVMValueRef invocation_id
, buffer
, buffer_offset
;
3024 LLVMValueRef lds_vertex_stride
, lds_base
;
3027 invocation_id
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
3028 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
3029 buffer_offset
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
3031 lds_vertex_stride
= get_tcs_in_vertex_dw_stride(ctx
);
3032 lds_base
= get_tcs_in_current_patch_offset(ctx
);
3033 lds_base
= ac_build_imad(&ctx
->ac
, invocation_id
, lds_vertex_stride
,
3036 inputs
= ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
;
3038 unsigned i
= u_bit_scan64(&inputs
);
3040 LLVMValueRef lds_ptr
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3041 LLVMConstInt(ctx
->i32
, 4 * i
, 0),
3044 LLVMValueRef buffer_addr
= get_tcs_tes_buffer_address(ctx
,
3045 get_rel_patch_id(ctx
),
3047 LLVMConstInt(ctx
->i32
, i
, 0));
3049 LLVMValueRef value
= lshs_lds_load(bld_base
, ctx
->ac
.i32
, ~0, lds_ptr
);
3051 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buffer_addr
,
3052 buffer_offset
, 0, 1, 0, false);
3056 static void si_write_tess_factors(struct lp_build_tgsi_context
*bld_base
,
3057 LLVMValueRef rel_patch_id
,
3058 LLVMValueRef invocation_id
,
3059 LLVMValueRef tcs_out_current_patch_data_offset
,
3060 LLVMValueRef invoc0_tf_outer
[4],
3061 LLVMValueRef invoc0_tf_inner
[2])
3063 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3064 struct si_shader
*shader
= ctx
->shader
;
3065 unsigned tess_inner_index
, tess_outer_index
;
3066 LLVMValueRef lds_base
, lds_inner
, lds_outer
, byteoffset
, buffer
;
3067 LLVMValueRef out
[6], vec0
, vec1
, tf_base
, inner
[4], outer
[4];
3068 unsigned stride
, outer_comps
, inner_comps
, i
, offset
;
3069 struct lp_build_if_state if_ctx
, inner_if_ctx
;
3071 /* Add a barrier before loading tess factors from LDS. */
3072 if (!shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
)
3073 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
3075 /* Do this only for invocation 0, because the tess levels are per-patch,
3078 * This can't jump, because invocation 0 executes this. It should
3079 * at least mask out the loads and stores for other invocations.
3081 lp_build_if(&if_ctx
, &ctx
->gallivm
,
3082 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3083 invocation_id
, ctx
->i32_0
, ""));
3085 /* Determine the layout of one tess factor element in the buffer. */
3086 switch (shader
->key
.part
.tcs
.epilog
.prim_mode
) {
3087 case PIPE_PRIM_LINES
:
3088 stride
= 2; /* 2 dwords, 1 vec2 store */
3092 case PIPE_PRIM_TRIANGLES
:
3093 stride
= 4; /* 4 dwords, 1 vec4 store */
3097 case PIPE_PRIM_QUADS
:
3098 stride
= 6; /* 6 dwords, 2 stores (vec4 + vec2) */
3107 for (i
= 0; i
< 4; i
++) {
3108 inner
[i
] = LLVMGetUndef(ctx
->i32
);
3109 outer
[i
] = LLVMGetUndef(ctx
->i32
);
3112 if (shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
) {
3113 /* Tess factors are in VGPRs. */
3114 for (i
= 0; i
< outer_comps
; i
++)
3115 outer
[i
] = out
[i
] = invoc0_tf_outer
[i
];
3116 for (i
= 0; i
< inner_comps
; i
++)
3117 inner
[i
] = out
[outer_comps
+i
] = invoc0_tf_inner
[i
];
3119 /* Load tess_inner and tess_outer from LDS.
3120 * Any invocation can write them, so we can't get them from a temporary.
3122 tess_inner_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSINNER
, 0);
3123 tess_outer_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSOUTER
, 0);
3125 lds_base
= tcs_out_current_patch_data_offset
;
3126 lds_inner
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3127 LLVMConstInt(ctx
->i32
,
3128 tess_inner_index
* 4, 0), "");
3129 lds_outer
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
3130 LLVMConstInt(ctx
->i32
,
3131 tess_outer_index
* 4, 0), "");
3133 for (i
= 0; i
< outer_comps
; i
++) {
3135 lshs_lds_load(bld_base
, ctx
->ac
.i32
, i
, lds_outer
);
3137 for (i
= 0; i
< inner_comps
; i
++) {
3138 inner
[i
] = out
[outer_comps
+i
] =
3139 lshs_lds_load(bld_base
, ctx
->ac
.i32
, i
, lds_inner
);
3143 if (shader
->key
.part
.tcs
.epilog
.prim_mode
== PIPE_PRIM_LINES
) {
3144 /* For isolines, the hardware expects tess factors in the
3145 * reverse order from what GLSL / TGSI specify.
3147 LLVMValueRef tmp
= out
[0];
3152 /* Convert the outputs to vectors for stores. */
3153 vec0
= ac_build_gather_values(&ctx
->ac
, out
, MIN2(stride
, 4));
3157 vec1
= ac_build_gather_values(&ctx
->ac
, out
+4, stride
- 4);
3159 /* Get the buffer. */
3160 buffer
= get_tess_ring_descriptor(ctx
, TCS_FACTOR_RING
);
3162 /* Get the offset. */
3163 tf_base
= LLVMGetParam(ctx
->main_fn
,
3164 ctx
->param_tcs_factor_offset
);
3165 byteoffset
= LLVMBuildMul(ctx
->ac
.builder
, rel_patch_id
,
3166 LLVMConstInt(ctx
->i32
, 4 * stride
, 0), "");
3168 lp_build_if(&inner_if_ctx
, &ctx
->gallivm
,
3169 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3170 rel_patch_id
, ctx
->i32_0
, ""));
3172 /* Store the dynamic HS control word. */
3174 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
3175 ac_build_buffer_store_dword(&ctx
->ac
, buffer
,
3176 LLVMConstInt(ctx
->i32
, 0x80000000, 0),
3177 1, ctx
->i32_0
, tf_base
,
3178 offset
, 1, 0, false);
3182 lp_build_endif(&inner_if_ctx
);
3184 /* Store the tessellation factors. */
3185 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec0
,
3186 MIN2(stride
, 4), byteoffset
, tf_base
,
3187 offset
, 1, 0, false);
3190 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec1
,
3191 stride
- 4, byteoffset
, tf_base
,
3192 offset
, 1, 0, false);
3194 /* Store the tess factors into the offchip buffer if TES reads them. */
3195 if (shader
->key
.part
.tcs
.epilog
.tes_reads_tess_factors
) {
3196 LLVMValueRef buf
, base
, inner_vec
, outer_vec
, tf_outer_offset
;
3197 LLVMValueRef tf_inner_offset
;
3198 unsigned param_outer
, param_inner
;
3200 buf
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
3201 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
3203 param_outer
= si_shader_io_get_unique_index_patch(
3204 TGSI_SEMANTIC_TESSOUTER
, 0);
3205 tf_outer_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
3206 LLVMConstInt(ctx
->i32
, param_outer
, 0));
3208 unsigned outer_vec_size
=
3209 ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false) ?
3210 outer_comps
: util_next_power_of_two(outer_comps
);
3211 outer_vec
= ac_build_gather_values(&ctx
->ac
, outer
, outer_vec_size
);
3213 ac_build_buffer_store_dword(&ctx
->ac
, buf
, outer_vec
,
3214 outer_comps
, tf_outer_offset
,
3215 base
, 0, 1, 0, false);
3217 param_inner
= si_shader_io_get_unique_index_patch(
3218 TGSI_SEMANTIC_TESSINNER
, 0);
3219 tf_inner_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
3220 LLVMConstInt(ctx
->i32
, param_inner
, 0));
3222 inner_vec
= inner_comps
== 1 ? inner
[0] :
3223 ac_build_gather_values(&ctx
->ac
, inner
, inner_comps
);
3224 ac_build_buffer_store_dword(&ctx
->ac
, buf
, inner_vec
,
3225 inner_comps
, tf_inner_offset
,
3226 base
, 0, 1, 0, false);
3230 lp_build_endif(&if_ctx
);
3234 si_insert_input_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3235 unsigned param
, unsigned return_index
)
3237 return LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3238 LLVMGetParam(ctx
->main_fn
, param
),
3243 si_insert_input_ret_float(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3244 unsigned param
, unsigned return_index
)
3246 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3247 LLVMValueRef p
= LLVMGetParam(ctx
->main_fn
, param
);
3249 return LLVMBuildInsertValue(builder
, ret
,
3250 ac_to_float(&ctx
->ac
, p
),
3255 si_insert_input_ptr(struct si_shader_context
*ctx
, LLVMValueRef ret
,
3256 unsigned param
, unsigned return_index
)
3258 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3259 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, param
);
3260 ptr
= LLVMBuildPtrToInt(builder
, ptr
, ctx
->i32
, "");
3261 return LLVMBuildInsertValue(builder
, ret
, ptr
, return_index
, "");
3264 /* This only writes the tessellation factor levels. */
3265 static void si_llvm_emit_tcs_epilogue(struct ac_shader_abi
*abi
,
3266 unsigned max_outputs
,
3267 LLVMValueRef
*addrs
)
3269 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3270 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
3271 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3272 LLVMValueRef rel_patch_id
, invocation_id
, tf_lds_offset
;
3274 si_copy_tcs_inputs(bld_base
);
3276 rel_patch_id
= get_rel_patch_id(ctx
);
3277 invocation_id
= unpack_llvm_param(ctx
, ctx
->abi
.tcs_rel_ids
, 8, 5);
3278 tf_lds_offset
= get_tcs_out_current_patch_data_offset(ctx
);
3280 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3281 LLVMBasicBlockRef blocks
[2] = {
3282 LLVMGetInsertBlock(builder
),
3283 ctx
->merged_wrap_if_state
.entry_block
3285 LLVMValueRef values
[2];
3287 lp_build_endif(&ctx
->merged_wrap_if_state
);
3289 values
[0] = rel_patch_id
;
3290 values
[1] = LLVMGetUndef(ctx
->i32
);
3291 rel_patch_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3293 values
[0] = tf_lds_offset
;
3294 values
[1] = LLVMGetUndef(ctx
->i32
);
3295 tf_lds_offset
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3297 values
[0] = invocation_id
;
3298 values
[1] = ctx
->i32_1
; /* cause the epilog to skip threads */
3299 invocation_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3302 /* Return epilog parameters from this function. */
3303 LLVMValueRef ret
= ctx
->return_value
;
3306 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3307 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3308 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3309 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3310 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
3311 /* Tess offchip and tess factor offsets are at the beginning. */
3312 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3313 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3314 vgpr
= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
+ 1;
3316 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3317 GFX6_SGPR_TCS_OFFCHIP_LAYOUT
);
3318 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3319 GFX6_SGPR_TCS_OUT_LAYOUT
);
3320 /* Tess offchip and tess factor offsets are after user SGPRs. */
3321 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
,
3322 GFX6_TCS_NUM_USER_SGPR
);
3323 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
,
3324 GFX6_TCS_NUM_USER_SGPR
+ 1);
3325 vgpr
= GFX6_TCS_NUM_USER_SGPR
+ 2;
3329 rel_patch_id
= ac_to_float(&ctx
->ac
, rel_patch_id
);
3330 invocation_id
= ac_to_float(&ctx
->ac
, invocation_id
);
3331 tf_lds_offset
= ac_to_float(&ctx
->ac
, tf_lds_offset
);
3333 /* Leave a hole corresponding to the two input VGPRs. This ensures that
3334 * the invocation_id output does not alias the tcs_rel_ids input,
3335 * which saves a V_MOV on gfx9.
3339 ret
= LLVMBuildInsertValue(builder
, ret
, rel_patch_id
, vgpr
++, "");
3340 ret
= LLVMBuildInsertValue(builder
, ret
, invocation_id
, vgpr
++, "");
3342 if (ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
3343 vgpr
++; /* skip the tess factor LDS offset */
3344 for (unsigned i
= 0; i
< 6; i
++) {
3345 LLVMValueRef value
=
3346 LLVMBuildLoad(builder
, ctx
->invoc0_tess_factors
[i
], "");
3347 value
= ac_to_float(&ctx
->ac
, value
);
3348 ret
= LLVMBuildInsertValue(builder
, ret
, value
, vgpr
++, "");
3351 ret
= LLVMBuildInsertValue(builder
, ret
, tf_lds_offset
, vgpr
++, "");
3353 ctx
->return_value
= ret
;
3356 /* Pass TCS inputs from LS to TCS on GFX9. */
3357 static void si_set_ls_return_value_for_tcs(struct si_shader_context
*ctx
)
3359 LLVMValueRef ret
= ctx
->return_value
;
3361 ret
= si_insert_input_ptr(ctx
, ret
, 0, 0);
3362 ret
= si_insert_input_ptr(ctx
, ret
, 1, 1);
3363 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3364 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3365 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3366 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3368 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->param_rw_buffers
,
3369 8 + SI_SGPR_RW_BUFFERS
);
3370 ret
= si_insert_input_ptr(ctx
, ret
,
3371 ctx
->param_bindless_samplers_and_images
,
3372 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3374 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_vs_state_bits
,
3375 8 + SI_SGPR_VS_STATE_BITS
);
3377 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3378 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3379 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_offsets
,
3380 8 + GFX9_SGPR_TCS_OUT_OFFSETS
);
3381 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3382 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
3384 unsigned vgpr
= 8 + GFX9_TCS_NUM_USER_SGPR
;
3385 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3386 ac_to_float(&ctx
->ac
, ctx
->abi
.tcs_patch_id
),
3388 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
3389 ac_to_float(&ctx
->ac
, ctx
->abi
.tcs_rel_ids
),
3391 ctx
->return_value
= ret
;
3394 /* Pass GS inputs from ES to GS on GFX9. */
3395 static void si_set_es_return_value_for_gs(struct si_shader_context
*ctx
)
3397 LLVMValueRef ret
= ctx
->return_value
;
3399 ret
= si_insert_input_ptr(ctx
, ret
, 0, 0);
3400 ret
= si_insert_input_ptr(ctx
, ret
, 1, 1);
3401 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_gs2vs_offset
, 2);
3402 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3403 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3405 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->param_rw_buffers
,
3406 8 + SI_SGPR_RW_BUFFERS
);
3407 ret
= si_insert_input_ptr(ctx
, ret
,
3408 ctx
->param_bindless_samplers_and_images
,
3409 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3412 if (ctx
->type
== PIPE_SHADER_VERTEX
)
3413 vgpr
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
3415 vgpr
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
3417 for (unsigned i
= 0; i
< 5; i
++) {
3418 unsigned param
= ctx
->param_gs_vtx01_offset
+ i
;
3419 ret
= si_insert_input_ret_float(ctx
, ret
, param
, vgpr
++);
3421 ctx
->return_value
= ret
;
3424 static void si_llvm_emit_ls_epilogue(struct ac_shader_abi
*abi
,
3425 unsigned max_outputs
,
3426 LLVMValueRef
*addrs
)
3428 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3429 struct si_shader
*shader
= ctx
->shader
;
3430 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3432 LLVMValueRef vertex_id
= LLVMGetParam(ctx
->main_fn
,
3433 ctx
->param_rel_auto_id
);
3434 LLVMValueRef vertex_dw_stride
= get_tcs_in_vertex_dw_stride(ctx
);
3435 LLVMValueRef base_dw_addr
= LLVMBuildMul(ctx
->ac
.builder
, vertex_id
,
3436 vertex_dw_stride
, "");
3438 /* Write outputs to LDS. The next shader (TCS aka HS) will read
3439 * its inputs from it. */
3440 for (i
= 0; i
< info
->num_outputs
; i
++) {
3441 unsigned name
= info
->output_semantic_name
[i
];
3442 unsigned index
= info
->output_semantic_index
[i
];
3444 /* The ARB_shader_viewport_layer_array spec contains the
3447 * 2) What happens if gl_ViewportIndex or gl_Layer is
3448 * written in the vertex shader and a geometry shader is
3451 * RESOLVED: The value written by the last vertex processing
3452 * stage is used. If the last vertex processing stage
3453 * (vertex, tessellation evaluation or geometry) does not
3454 * statically assign to gl_ViewportIndex or gl_Layer, index
3455 * or layer zero is assumed.
3457 * So writes to those outputs in VS-as-LS are simply ignored.
3459 if (name
== TGSI_SEMANTIC_LAYER
||
3460 name
== TGSI_SEMANTIC_VIEWPORT_INDEX
)
3463 int param
= si_shader_io_get_unique_index(name
, index
, false);
3464 LLVMValueRef dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_dw_addr
,
3465 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
3467 for (chan
= 0; chan
< 4; chan
++) {
3468 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
3471 lshs_lds_store(ctx
, chan
, dw_addr
,
3472 LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], ""));
3476 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3477 si_set_ls_return_value_for_tcs(ctx
);
3480 static void si_llvm_emit_es_epilogue(struct ac_shader_abi
*abi
,
3481 unsigned max_outputs
,
3482 LLVMValueRef
*addrs
)
3484 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3485 struct si_shader
*es
= ctx
->shader
;
3486 struct tgsi_shader_info
*info
= &es
->selector
->info
;
3487 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
3488 ctx
->param_es2gs_offset
);
3489 LLVMValueRef lds_base
= NULL
;
3493 if (ctx
->screen
->info
.chip_class
>= GFX9
&& info
->num_outputs
) {
3494 unsigned itemsize_dw
= es
->selector
->esgs_itemsize
/ 4;
3495 LLVMValueRef vertex_idx
= ac_get_thread_id(&ctx
->ac
);
3496 LLVMValueRef wave_idx
= si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 24, 4);
3497 vertex_idx
= LLVMBuildOr(ctx
->ac
.builder
, vertex_idx
,
3498 LLVMBuildMul(ctx
->ac
.builder
, wave_idx
,
3499 LLVMConstInt(ctx
->i32
, 64, false), ""), "");
3500 lds_base
= LLVMBuildMul(ctx
->ac
.builder
, vertex_idx
,
3501 LLVMConstInt(ctx
->i32
, itemsize_dw
, 0), "");
3504 for (i
= 0; i
< info
->num_outputs
; i
++) {
3507 if (info
->output_semantic_name
[i
] == TGSI_SEMANTIC_VIEWPORT_INDEX
||
3508 info
->output_semantic_name
[i
] == TGSI_SEMANTIC_LAYER
)
3511 param
= si_shader_io_get_unique_index(info
->output_semantic_name
[i
],
3512 info
->output_semantic_index
[i
], false);
3514 for (chan
= 0; chan
< 4; chan
++) {
3515 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
3518 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
3519 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
3521 /* GFX9 has the ESGS ring in LDS. */
3522 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3523 LLVMValueRef idx
= LLVMConstInt(ctx
->i32
, param
* 4 + chan
, false);
3524 idx
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
, idx
, "");
3525 ac_build_indexed_store(&ctx
->ac
, ctx
->esgs_ring
, idx
, out_val
);
3529 ac_build_buffer_store_dword(&ctx
->ac
,
3531 out_val
, 1, NULL
, soffset
,
3532 (4 * param
+ chan
) * 4,
3537 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3538 si_set_es_return_value_for_gs(ctx
);
3541 static LLVMValueRef
si_get_gs_wave_id(struct si_shader_context
*ctx
)
3543 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3544 return si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 16, 8);
3546 return LLVMGetParam(ctx
->main_fn
, ctx
->param_gs_wave_id
);
3549 static void emit_gs_epilogue(struct si_shader_context
*ctx
)
3551 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_NOP
| AC_SENDMSG_GS_DONE
,
3552 si_get_gs_wave_id(ctx
));
3554 if (ctx
->screen
->info
.chip_class
>= GFX9
)
3555 lp_build_endif(&ctx
->merged_wrap_if_state
);
3558 static void si_llvm_emit_gs_epilogue(struct ac_shader_abi
*abi
,
3559 unsigned max_outputs
,
3560 LLVMValueRef
*addrs
)
3562 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3563 struct tgsi_shader_info UNUSED
*info
= &ctx
->shader
->selector
->info
;
3565 assert(info
->num_outputs
<= max_outputs
);
3567 emit_gs_epilogue(ctx
);
3570 static void si_tgsi_emit_gs_epilogue(struct lp_build_tgsi_context
*bld_base
)
3572 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3573 emit_gs_epilogue(ctx
);
3576 static void si_llvm_emit_vs_epilogue(struct ac_shader_abi
*abi
,
3577 unsigned max_outputs
,
3578 LLVMValueRef
*addrs
)
3580 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3581 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
3582 struct si_shader_output_values
*outputs
= NULL
;
3585 assert(!ctx
->shader
->is_gs_copy_shader
);
3586 assert(info
->num_outputs
<= max_outputs
);
3588 outputs
= MALLOC((info
->num_outputs
+ 1) * sizeof(outputs
[0]));
3590 for (i
= 0; i
< info
->num_outputs
; i
++) {
3591 outputs
[i
].semantic_name
= info
->output_semantic_name
[i
];
3592 outputs
[i
].semantic_index
= info
->output_semantic_index
[i
];
3594 for (j
= 0; j
< 4; j
++) {
3595 outputs
[i
].values
[j
] =
3596 LLVMBuildLoad(ctx
->ac
.builder
,
3599 outputs
[i
].vertex_stream
[j
] =
3600 (info
->output_streams
[i
] >> (2 * j
)) & 3;
3604 if (ctx
->shader
->selector
->so
.num_outputs
)
3605 si_llvm_emit_streamout(ctx
, outputs
, i
, 0);
3607 /* Export PrimitiveID. */
3608 if (ctx
->shader
->key
.mono
.u
.vs_export_prim_id
) {
3609 outputs
[i
].semantic_name
= TGSI_SEMANTIC_PRIMID
;
3610 outputs
[i
].semantic_index
= 0;
3611 outputs
[i
].values
[0] = ac_to_float(&ctx
->ac
, si_get_primitive_id(ctx
, 0));
3612 for (j
= 1; j
< 4; j
++)
3613 outputs
[i
].values
[j
] = LLVMConstReal(ctx
->f32
, 0);
3615 memset(outputs
[i
].vertex_stream
, 0,
3616 sizeof(outputs
[i
].vertex_stream
));
3620 si_llvm_export_vs(ctx
, outputs
, i
);
3624 static void si_llvm_emit_prim_discard_cs_epilogue(struct ac_shader_abi
*abi
,
3625 unsigned max_outputs
,
3626 LLVMValueRef
*addrs
)
3628 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3629 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
3630 LLVMValueRef pos
[4] = {};
3632 assert(info
->num_outputs
<= max_outputs
);
3634 for (unsigned i
= 0; i
< info
->num_outputs
; i
++) {
3635 if (info
->output_semantic_name
[i
] != TGSI_SEMANTIC_POSITION
)
3638 for (unsigned chan
= 0; chan
< 4; chan
++)
3639 pos
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
3642 assert(pos
[0] != NULL
);
3644 /* Return the position output. */
3645 LLVMValueRef ret
= ctx
->return_value
;
3646 for (unsigned chan
= 0; chan
< 4; chan
++)
3647 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, pos
[chan
], chan
, "");
3648 ctx
->return_value
= ret
;
3651 static void si_tgsi_emit_epilogue(struct lp_build_tgsi_context
*bld_base
)
3653 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3655 ctx
->abi
.emit_outputs(&ctx
->abi
, RADEON_LLVM_MAX_OUTPUTS
,
3656 &ctx
->outputs
[0][0]);
3659 struct si_ps_exports
{
3661 struct ac_export_args args
[10];
3664 static void si_export_mrt_z(struct lp_build_tgsi_context
*bld_base
,
3665 LLVMValueRef depth
, LLVMValueRef stencil
,
3666 LLVMValueRef samplemask
, struct si_ps_exports
*exp
)
3668 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3669 struct ac_export_args args
;
3671 ac_export_mrt_z(&ctx
->ac
, depth
, stencil
, samplemask
, &args
);
3673 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3676 static void si_export_mrt_color(struct lp_build_tgsi_context
*bld_base
,
3677 LLVMValueRef
*color
, unsigned index
,
3678 unsigned samplemask_param
,
3679 bool is_last
, struct si_ps_exports
*exp
)
3681 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3685 if (ctx
->shader
->key
.part
.ps
.epilog
.clamp_color
)
3686 for (i
= 0; i
< 4; i
++)
3687 color
[i
] = ac_build_clamp(&ctx
->ac
, color
[i
]);
3690 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_to_one
)
3691 color
[3] = ctx
->ac
.f32_1
;
3695 ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_ALWAYS
)
3696 si_alpha_test(bld_base
, color
[3]);
3698 /* Line & polygon smoothing */
3699 if (ctx
->shader
->key
.part
.ps
.epilog
.poly_line_smoothing
)
3700 color
[3] = si_scale_alpha_by_sample_mask(bld_base
, color
[3],
3703 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
3704 if (ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
> 0) {
3705 struct ac_export_args args
[8];
3708 /* Get the export arguments, also find out what the last one is. */
3709 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3710 si_llvm_init_export_args(ctx
, color
,
3711 V_008DFC_SQ_EXP_MRT
+ c
, &args
[c
]);
3712 if (args
[c
].enabled_channels
)
3716 /* Emit all exports. */
3717 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3718 if (is_last
&& last
== c
) {
3719 args
[c
].valid_mask
= 1; /* whether the EXEC mask is valid */
3720 args
[c
].done
= 1; /* DONE bit */
3721 } else if (!args
[c
].enabled_channels
)
3722 continue; /* unnecessary NULL export */
3724 memcpy(&exp
->args
[exp
->num
++], &args
[c
], sizeof(args
[c
]));
3727 struct ac_export_args args
;
3730 si_llvm_init_export_args(ctx
, color
, V_008DFC_SQ_EXP_MRT
+ index
,
3733 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3734 args
.done
= 1; /* DONE bit */
3735 } else if (!args
.enabled_channels
)
3736 return; /* unnecessary NULL export */
3738 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3742 static void si_emit_ps_exports(struct si_shader_context
*ctx
,
3743 struct si_ps_exports
*exp
)
3745 for (unsigned i
= 0; i
< exp
->num
; i
++)
3746 ac_build_export(&ctx
->ac
, &exp
->args
[i
]);
3750 * Return PS outputs in this order:
3752 * v[0:3] = color0.xyzw
3753 * v[4:7] = color1.xyzw
3758 * vN+3 = SampleMaskIn (used for OpenGL smoothing)
3760 * The alpha-ref SGPR is returned via its original location.
3762 static void si_llvm_return_fs_outputs(struct ac_shader_abi
*abi
,
3763 unsigned max_outputs
,
3764 LLVMValueRef
*addrs
)
3766 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3767 struct si_shader
*shader
= ctx
->shader
;
3768 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3769 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3770 unsigned i
, j
, first_vgpr
, vgpr
;
3772 LLVMValueRef color
[8][4] = {};
3773 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
3776 if (ctx
->postponed_kill
)
3777 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildLoad(builder
, ctx
->postponed_kill
, ""));
3779 /* Read the output values. */
3780 for (i
= 0; i
< info
->num_outputs
; i
++) {
3781 unsigned semantic_name
= info
->output_semantic_name
[i
];
3782 unsigned semantic_index
= info
->output_semantic_index
[i
];
3784 switch (semantic_name
) {
3785 case TGSI_SEMANTIC_COLOR
:
3786 assert(semantic_index
< 8);
3787 for (j
= 0; j
< 4; j
++) {
3788 LLVMValueRef ptr
= addrs
[4 * i
+ j
];
3789 LLVMValueRef result
= LLVMBuildLoad(builder
, ptr
, "");
3790 color
[semantic_index
][j
] = result
;
3793 case TGSI_SEMANTIC_POSITION
:
3794 depth
= LLVMBuildLoad(builder
,
3795 addrs
[4 * i
+ 2], "");
3797 case TGSI_SEMANTIC_STENCIL
:
3798 stencil
= LLVMBuildLoad(builder
,
3799 addrs
[4 * i
+ 1], "");
3801 case TGSI_SEMANTIC_SAMPLEMASK
:
3802 samplemask
= LLVMBuildLoad(builder
,
3803 addrs
[4 * i
+ 0], "");
3806 fprintf(stderr
, "Warning: GFX6 unhandled fs output type:%d\n",
3811 /* Fill the return structure. */
3812 ret
= ctx
->return_value
;
3815 ret
= LLVMBuildInsertValue(builder
, ret
,
3816 ac_to_integer(&ctx
->ac
,
3817 LLVMGetParam(ctx
->main_fn
,
3818 SI_PARAM_ALPHA_REF
)),
3819 SI_SGPR_ALPHA_REF
, "");
3822 first_vgpr
= vgpr
= SI_SGPR_ALPHA_REF
+ 1;
3823 for (i
= 0; i
< ARRAY_SIZE(color
); i
++) {
3827 for (j
= 0; j
< 4; j
++)
3828 ret
= LLVMBuildInsertValue(builder
, ret
, color
[i
][j
], vgpr
++, "");
3831 ret
= LLVMBuildInsertValue(builder
, ret
, depth
, vgpr
++, "");
3833 ret
= LLVMBuildInsertValue(builder
, ret
, stencil
, vgpr
++, "");
3835 ret
= LLVMBuildInsertValue(builder
, ret
, samplemask
, vgpr
++, "");
3837 /* Add the input sample mask for smoothing at the end. */
3838 if (vgpr
< first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
)
3839 vgpr
= first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
;
3840 ret
= LLVMBuildInsertValue(builder
, ret
,
3841 LLVMGetParam(ctx
->main_fn
,
3842 SI_PARAM_SAMPLE_COVERAGE
), vgpr
++, "");
3844 ctx
->return_value
= ret
;
3847 static void membar_emit(
3848 const struct lp_build_tgsi_action
*action
,
3849 struct lp_build_tgsi_context
*bld_base
,
3850 struct lp_build_emit_data
*emit_data
)
3852 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3853 LLVMValueRef src0
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, 0);
3854 unsigned flags
= LLVMConstIntGetZExtValue(src0
);
3855 unsigned waitcnt
= NOOP_WAITCNT
;
3857 if (flags
& TGSI_MEMBAR_THREAD_GROUP
)
3858 waitcnt
&= VM_CNT
& LGKM_CNT
;
3860 if (flags
& (TGSI_MEMBAR_ATOMIC_BUFFER
|
3861 TGSI_MEMBAR_SHADER_BUFFER
|
3862 TGSI_MEMBAR_SHADER_IMAGE
))
3865 if (flags
& TGSI_MEMBAR_SHARED
)
3866 waitcnt
&= LGKM_CNT
;
3868 if (waitcnt
!= NOOP_WAITCNT
)
3869 ac_build_waitcnt(&ctx
->ac
, waitcnt
);
3872 static void clock_emit(
3873 const struct lp_build_tgsi_action
*action
,
3874 struct lp_build_tgsi_context
*bld_base
,
3875 struct lp_build_emit_data
*emit_data
)
3877 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3878 LLVMValueRef tmp
= ac_build_shader_clock(&ctx
->ac
);
3880 emit_data
->output
[0] =
3881 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_0
, "");
3882 emit_data
->output
[1] =
3883 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_1
, "");
3886 static void si_llvm_emit_ddxy(
3887 const struct lp_build_tgsi_action
*action
,
3888 struct lp_build_tgsi_context
*bld_base
,
3889 struct lp_build_emit_data
*emit_data
)
3891 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3892 unsigned opcode
= emit_data
->info
->opcode
;
3897 if (opcode
== TGSI_OPCODE_DDX_FINE
)
3898 mask
= AC_TID_MASK_LEFT
;
3899 else if (opcode
== TGSI_OPCODE_DDY_FINE
)
3900 mask
= AC_TID_MASK_TOP
;
3902 mask
= AC_TID_MASK_TOP_LEFT
;
3904 /* for DDX we want to next X pixel, DDY next Y pixel. */
3905 idx
= (opcode
== TGSI_OPCODE_DDX
|| opcode
== TGSI_OPCODE_DDX_FINE
) ? 1 : 2;
3907 val
= ac_to_integer(&ctx
->ac
, emit_data
->args
[0]);
3908 val
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, val
);
3909 emit_data
->output
[emit_data
->chan
] = val
;
3912 static void build_interp_intrinsic(const struct lp_build_tgsi_action
*action
,
3913 struct lp_build_tgsi_context
*bld_base
,
3914 struct lp_build_emit_data
*emit_data
)
3916 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3917 struct si_shader
*shader
= ctx
->shader
;
3918 const struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3919 LLVMValueRef interp_param
;
3920 const struct tgsi_full_instruction
*inst
= emit_data
->inst
;
3921 const struct tgsi_full_src_register
*input
= &inst
->Src
[0];
3922 int input_base
, input_array_size
;
3925 LLVMValueRef prim_mask
= ctx
->abi
.prim_mask
;
3926 LLVMValueRef array_idx
, offset_x
= NULL
, offset_y
= NULL
;
3927 int interp_param_idx
;
3931 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
) {
3932 /* offset is in second src, first two channels */
3933 offset_x
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 1,
3935 offset_y
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 1,
3937 } else if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
3938 LLVMValueRef sample_position
;
3939 LLVMValueRef sample_id
;
3940 LLVMValueRef halfval
= LLVMConstReal(ctx
->f32
, 0.5f
);
3942 /* fetch sample ID, then fetch its sample position,
3943 * and place into first two channels.
3945 sample_id
= lp_build_emit_fetch(bld_base
,
3946 emit_data
->inst
, 1, TGSI_CHAN_X
);
3947 sample_id
= ac_to_integer(&ctx
->ac
, sample_id
);
3949 /* Section 8.13.2 (Interpolation Functions) of the OpenGL Shading
3950 * Language 4.50 spec says about interpolateAtSample:
3952 * "Returns the value of the input interpolant variable at
3953 * the location of sample number sample. If multisample
3954 * buffers are not available, the input variable will be
3955 * evaluated at the center of the pixel. If sample sample
3956 * does not exist, the position used to interpolate the
3957 * input variable is undefined."
3959 * This means that sample_id values outside of the valid are
3960 * in fact valid input, and the usual mechanism for loading the
3961 * sample position doesn't work.
3963 if (ctx
->shader
->key
.mono
.u
.ps
.interpolate_at_sample_force_center
) {
3964 LLVMValueRef center
[4] = {
3965 LLVMConstReal(ctx
->f32
, 0.5),
3966 LLVMConstReal(ctx
->f32
, 0.5),
3971 sample_position
= ac_build_gather_values(&ctx
->ac
, center
, 4);
3973 sample_position
= load_sample_position(&ctx
->abi
, sample_id
);
3976 offset_x
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
,
3979 offset_x
= LLVMBuildFSub(ctx
->ac
.builder
, offset_x
, halfval
, "");
3980 offset_y
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
,
3982 offset_y
= LLVMBuildFSub(ctx
->ac
.builder
, offset_y
, halfval
, "");
3985 assert(input
->Register
.File
== TGSI_FILE_INPUT
);
3987 if (input
->Register
.Indirect
) {
3988 unsigned array_id
= input
->Indirect
.ArrayID
;
3991 input_base
= info
->input_array_first
[array_id
];
3992 input_array_size
= info
->input_array_last
[array_id
] - input_base
+ 1;
3994 input_base
= inst
->Src
[0].Register
.Index
;
3995 input_array_size
= info
->num_inputs
- input_base
;
3998 array_idx
= si_get_indirect_index(ctx
, &input
->Indirect
,
3999 1, input
->Register
.Index
- input_base
);
4001 input_base
= inst
->Src
[0].Register
.Index
;
4002 input_array_size
= 1;
4003 array_idx
= ctx
->i32_0
;
4006 interp
= shader
->selector
->info
.input_interpolate
[input_base
];
4008 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
4009 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
)
4010 location
= TGSI_INTERPOLATE_LOC_CENTER
;
4012 location
= TGSI_INTERPOLATE_LOC_CENTROID
;
4014 interp_param_idx
= lookup_interp_param_index(interp
, location
);
4015 if (interp_param_idx
== -1)
4017 else if (interp_param_idx
)
4018 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
4020 interp_param
= NULL
;
4022 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
4023 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
4024 LLVMValueRef ij_out
[2];
4025 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
4028 * take the I then J parameters, and the DDX/Y for it, and
4029 * calculate the IJ inputs for the interpolator.
4030 * temp1 = ddx * offset/sample.x + I;
4031 * interp_param.I = ddy * offset/sample.y + temp1;
4032 * temp1 = ddx * offset/sample.x + J;
4033 * interp_param.J = ddy * offset/sample.y + temp1;
4035 for (i
= 0; i
< 2; i
++) {
4036 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->i32
, i
, 0);
4037 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->i32
, i
+ 2, 0);
4038 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4039 ddxy_out
, ix_ll
, "");
4040 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4041 ddxy_out
, iy_ll
, "");
4042 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
4043 interp_param
, ix_ll
, "");
4046 interp_el
= ac_to_float(&ctx
->ac
, interp_el
);
4048 temp
= ac_build_fmad(&ctx
->ac
, ddx_el
, offset_x
, interp_el
);
4049 ij_out
[i
] = ac_build_fmad(&ctx
->ac
, ddy_el
, offset_y
, temp
);
4051 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
4055 interp_param
= ac_to_float(&ctx
->ac
, interp_param
);
4057 for (chan
= 0; chan
< 4; chan
++) {
4058 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->f32
, input_array_size
));
4059 unsigned schan
= tgsi_util_get_full_src_register_swizzle(&inst
->Src
[0], chan
);
4061 for (unsigned idx
= 0; idx
< input_array_size
; ++idx
) {
4062 LLVMValueRef v
, i
= NULL
, j
= NULL
;
4065 i
= LLVMBuildExtractElement(
4066 ctx
->ac
.builder
, interp_param
, ctx
->i32_0
, "");
4067 j
= LLVMBuildExtractElement(
4068 ctx
->ac
.builder
, interp_param
, ctx
->i32_1
, "");
4070 v
= si_build_fs_interp(ctx
, input_base
+ idx
, schan
,
4073 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
,
4074 gather
, v
, LLVMConstInt(ctx
->i32
, idx
, false), "");
4077 emit_data
->output
[chan
] = LLVMBuildExtractElement(
4078 ctx
->ac
.builder
, gather
, array_idx
, "");
4082 static void vote_all_emit(
4083 const struct lp_build_tgsi_action
*action
,
4084 struct lp_build_tgsi_context
*bld_base
,
4085 struct lp_build_emit_data
*emit_data
)
4087 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4089 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, emit_data
->args
[0]);
4090 emit_data
->output
[emit_data
->chan
] =
4091 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4094 static void vote_any_emit(
4095 const struct lp_build_tgsi_action
*action
,
4096 struct lp_build_tgsi_context
*bld_base
,
4097 struct lp_build_emit_data
*emit_data
)
4099 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4101 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, emit_data
->args
[0]);
4102 emit_data
->output
[emit_data
->chan
] =
4103 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4106 static void vote_eq_emit(
4107 const struct lp_build_tgsi_action
*action
,
4108 struct lp_build_tgsi_context
*bld_base
,
4109 struct lp_build_emit_data
*emit_data
)
4111 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4113 LLVMValueRef tmp
= ac_build_vote_eq(&ctx
->ac
, emit_data
->args
[0]);
4114 emit_data
->output
[emit_data
->chan
] =
4115 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
4118 static void ballot_emit(
4119 const struct lp_build_tgsi_action
*action
,
4120 struct lp_build_tgsi_context
*bld_base
,
4121 struct lp_build_emit_data
*emit_data
)
4123 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4124 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4127 tmp
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, TGSI_CHAN_X
);
4128 tmp
= ac_build_ballot(&ctx
->ac
, tmp
);
4129 tmp
= LLVMBuildBitCast(builder
, tmp
, ctx
->v2i32
, "");
4131 emit_data
->output
[0] = LLVMBuildExtractElement(builder
, tmp
, ctx
->i32_0
, "");
4132 emit_data
->output
[1] = LLVMBuildExtractElement(builder
, tmp
, ctx
->i32_1
, "");
4135 static void read_lane_emit(
4136 const struct lp_build_tgsi_action
*action
,
4137 struct lp_build_tgsi_context
*bld_base
,
4138 struct lp_build_emit_data
*emit_data
)
4140 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4142 if (emit_data
->inst
->Instruction
.Opcode
== TGSI_OPCODE_READ_INVOC
) {
4143 emit_data
->args
[0] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
4144 0, emit_data
->src_chan
);
4146 /* Always read the source invocation (= lane) from the X channel. */
4147 emit_data
->args
[1] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
4149 emit_data
->arg_count
= 2;
4152 /* We currently have no other way to prevent LLVM from lifting the icmp
4153 * calls to a dominating basic block.
4155 ac_build_optimization_barrier(&ctx
->ac
, &emit_data
->args
[0]);
4157 for (unsigned i
= 0; i
< emit_data
->arg_count
; ++i
)
4158 emit_data
->args
[i
] = ac_to_integer(&ctx
->ac
, emit_data
->args
[i
]);
4160 emit_data
->output
[emit_data
->chan
] =
4161 ac_build_intrinsic(&ctx
->ac
, action
->intr_name
,
4162 ctx
->i32
, emit_data
->args
, emit_data
->arg_count
,
4163 AC_FUNC_ATTR_READNONE
|
4164 AC_FUNC_ATTR_CONVERGENT
);
4167 static unsigned si_llvm_get_stream(struct lp_build_tgsi_context
*bld_base
,
4168 struct lp_build_emit_data
*emit_data
)
4170 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4171 struct tgsi_src_register src0
= emit_data
->inst
->Src
[0].Register
;
4175 assert(src0
.File
== TGSI_FILE_IMMEDIATE
);
4177 imm
= ctx
->imms
[src0
.Index
* TGSI_NUM_CHANNELS
+ src0
.SwizzleX
];
4178 stream
= LLVMConstIntGetZExtValue(imm
) & 0x3;
4182 /* Emit one vertex from the geometry shader */
4183 static void si_llvm_emit_vertex(struct ac_shader_abi
*abi
,
4185 LLVMValueRef
*addrs
)
4187 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4188 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
4189 struct si_shader
*shader
= ctx
->shader
;
4190 struct lp_build_if_state if_state
;
4191 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
4192 ctx
->param_gs2vs_offset
);
4193 LLVMValueRef gs_next_vertex
;
4194 LLVMValueRef can_emit
;
4195 unsigned chan
, offset
;
4198 /* Write vertex attribute values to GSVS ring */
4199 gs_next_vertex
= LLVMBuildLoad(ctx
->ac
.builder
,
4200 ctx
->gs_next_vertex
[stream
],
4203 /* If this thread has already emitted the declared maximum number of
4204 * vertices, skip the write: excessive vertex emissions are not
4205 * supposed to have any effect.
4207 * If the shader has no writes to memory, kill it instead. This skips
4208 * further memory loads and may allow LLVM to skip to the end
4211 can_emit
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, gs_next_vertex
,
4212 LLVMConstInt(ctx
->i32
,
4213 shader
->selector
->gs_max_out_vertices
, 0), "");
4215 bool use_kill
= !info
->writes_memory
;
4217 ac_build_kill_if_false(&ctx
->ac
, can_emit
);
4219 lp_build_if(&if_state
, &ctx
->gallivm
, can_emit
);
4223 for (i
= 0; i
< info
->num_outputs
; i
++) {
4224 for (chan
= 0; chan
< 4; chan
++) {
4225 if (!(info
->output_usagemask
[i
] & (1 << chan
)) ||
4226 ((info
->output_streams
[i
] >> (2 * chan
)) & 3) != stream
)
4229 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
4230 LLVMValueRef voffset
=
4231 LLVMConstInt(ctx
->i32
, offset
*
4232 shader
->selector
->gs_max_out_vertices
, 0);
4235 voffset
= LLVMBuildAdd(ctx
->ac
.builder
, voffset
, gs_next_vertex
, "");
4236 voffset
= LLVMBuildMul(ctx
->ac
.builder
, voffset
,
4237 LLVMConstInt(ctx
->i32
, 4, 0), "");
4239 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
4241 ac_build_buffer_store_dword(&ctx
->ac
,
4242 ctx
->gsvs_ring
[stream
],
4244 voffset
, soffset
, 0,
4249 gs_next_vertex
= LLVMBuildAdd(ctx
->ac
.builder
, gs_next_vertex
, ctx
->i32_1
, "");
4250 LLVMBuildStore(ctx
->ac
.builder
, gs_next_vertex
, ctx
->gs_next_vertex
[stream
]);
4252 /* Signal vertex emission if vertex data was written. */
4254 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_EMIT
| AC_SENDMSG_GS
| (stream
<< 8),
4255 si_get_gs_wave_id(ctx
));
4259 lp_build_endif(&if_state
);
4262 /* Emit one vertex from the geometry shader */
4263 static void si_tgsi_emit_vertex(
4264 const struct lp_build_tgsi_action
*action
,
4265 struct lp_build_tgsi_context
*bld_base
,
4266 struct lp_build_emit_data
*emit_data
)
4268 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4269 unsigned stream
= si_llvm_get_stream(bld_base
, emit_data
);
4271 si_llvm_emit_vertex(&ctx
->abi
, stream
, ctx
->outputs
[0]);
4274 /* Cut one primitive from the geometry shader */
4275 static void si_llvm_emit_primitive(struct ac_shader_abi
*abi
,
4278 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4280 /* Signal primitive cut */
4281 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_CUT
| AC_SENDMSG_GS
| (stream
<< 8),
4282 si_get_gs_wave_id(ctx
));
4285 /* Cut one primitive from the geometry shader */
4286 static void si_tgsi_emit_primitive(
4287 const struct lp_build_tgsi_action
*action
,
4288 struct lp_build_tgsi_context
*bld_base
,
4289 struct lp_build_emit_data
*emit_data
)
4291 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4293 si_llvm_emit_primitive(&ctx
->abi
, si_llvm_get_stream(bld_base
, emit_data
));
4296 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
4297 struct lp_build_tgsi_context
*bld_base
,
4298 struct lp_build_emit_data
*emit_data
)
4300 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4302 /* GFX6 only (thanks to a hw bug workaround):
4303 * The real barrier instruction isn’t needed, because an entire patch
4304 * always fits into a single wave.
4306 if (ctx
->screen
->info
.chip_class
== GFX6
&&
4307 ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
4308 ac_build_waitcnt(&ctx
->ac
, LGKM_CNT
& VM_CNT
);
4312 ac_build_s_barrier(&ctx
->ac
);
4315 void si_create_function(struct si_shader_context
*ctx
,
4317 LLVMTypeRef
*returns
, unsigned num_returns
,
4318 struct si_function_info
*fninfo
,
4319 unsigned max_workgroup_size
)
4323 si_llvm_create_func(ctx
, name
, returns
, num_returns
,
4324 fninfo
->types
, fninfo
->num_params
);
4325 ctx
->return_value
= LLVMGetUndef(ctx
->return_type
);
4327 for (i
= 0; i
< fninfo
->num_sgpr_params
; ++i
) {
4328 LLVMValueRef P
= LLVMGetParam(ctx
->main_fn
, i
);
4330 /* The combination of:
4334 * allows the optimization passes to move loads and reduces
4335 * SGPR spilling significantly.
4337 ac_add_function_attr(ctx
->ac
.context
, ctx
->main_fn
, i
+ 1,
4338 AC_FUNC_ATTR_INREG
);
4340 if (LLVMGetTypeKind(LLVMTypeOf(P
)) == LLVMPointerTypeKind
) {
4341 ac_add_function_attr(ctx
->ac
.context
, ctx
->main_fn
, i
+ 1,
4342 AC_FUNC_ATTR_NOALIAS
);
4343 ac_add_attr_dereferenceable(P
, UINT64_MAX
);
4347 for (i
= 0; i
< fninfo
->num_params
; ++i
) {
4348 if (fninfo
->assign
[i
])
4349 *fninfo
->assign
[i
] = LLVMGetParam(ctx
->main_fn
, i
);
4352 if (ctx
->screen
->info
.address32_hi
) {
4353 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
4354 "amdgpu-32bit-address-high-bits",
4355 ctx
->screen
->info
.address32_hi
);
4358 ac_llvm_set_workgroup_size(ctx
->main_fn
, max_workgroup_size
);
4360 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4361 "no-signed-zeros-fp-math",
4364 if (ctx
->screen
->debug_flags
& DBG(UNSAFE_MATH
)) {
4365 /* These were copied from some LLVM test. */
4366 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4367 "less-precise-fpmad",
4369 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4372 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4375 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4381 static void declare_streamout_params(struct si_shader_context
*ctx
,
4382 struct pipe_stream_output_info
*so
,
4383 struct si_function_info
*fninfo
)
4387 /* Streamout SGPRs. */
4388 if (so
->num_outputs
) {
4389 if (ctx
->type
!= PIPE_SHADER_TESS_EVAL
)
4390 ctx
->param_streamout_config
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4392 ctx
->param_streamout_config
= fninfo
->num_params
- 1;
4394 ctx
->param_streamout_write_index
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4396 /* A streamout buffer offset is loaded if the stride is non-zero. */
4397 for (i
= 0; i
< 4; i
++) {
4401 ctx
->param_streamout_offset
[i
] = add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4405 static unsigned si_get_max_workgroup_size(const struct si_shader
*shader
)
4407 switch (shader
->selector
->type
) {
4408 case PIPE_SHADER_TESS_CTRL
:
4409 /* Return this so that LLVM doesn't remove s_barrier
4410 * instructions on chips where we use s_barrier. */
4411 return shader
->selector
->screen
->info
.chip_class
>= GFX7
? 128 : 64;
4413 case PIPE_SHADER_GEOMETRY
:
4414 return shader
->selector
->screen
->info
.chip_class
>= GFX9
? 128 : 64;
4416 case PIPE_SHADER_COMPUTE
:
4417 break; /* see below */
4423 const unsigned *properties
= shader
->selector
->info
.properties
;
4424 unsigned max_work_group_size
=
4425 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] *
4426 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
] *
4427 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
];
4429 if (!max_work_group_size
) {
4430 /* This is a variable group size compute shader,
4431 * compile it for the maximum possible group size.
4433 max_work_group_size
= SI_MAX_VARIABLE_THREADS_PER_BLOCK
;
4435 return max_work_group_size
;
4438 static void declare_const_and_shader_buffers(struct si_shader_context
*ctx
,
4439 struct si_function_info
*fninfo
,
4442 LLVMTypeRef const_shader_buf_type
;
4444 if (ctx
->shader
->selector
->info
.const_buffers_declared
== 1 &&
4445 ctx
->shader
->selector
->info
.shader_buffers_declared
== 0)
4446 const_shader_buf_type
= ctx
->f32
;
4448 const_shader_buf_type
= ctx
->v4i32
;
4450 unsigned const_and_shader_buffers
=
4451 add_arg(fninfo
, ARG_SGPR
,
4452 ac_array_in_const32_addr_space(const_shader_buf_type
));
4455 ctx
->param_const_and_shader_buffers
= const_and_shader_buffers
;
4458 static void declare_samplers_and_images(struct si_shader_context
*ctx
,
4459 struct si_function_info
*fninfo
,
4462 unsigned samplers_and_images
=
4463 add_arg(fninfo
, ARG_SGPR
,
4464 ac_array_in_const32_addr_space(ctx
->v8i32
));
4467 ctx
->param_samplers_and_images
= samplers_and_images
;
4470 static void declare_per_stage_desc_pointers(struct si_shader_context
*ctx
,
4471 struct si_function_info
*fninfo
,
4474 declare_const_and_shader_buffers(ctx
, fninfo
, assign_params
);
4475 declare_samplers_and_images(ctx
, fninfo
, assign_params
);
4478 static void declare_global_desc_pointers(struct si_shader_context
*ctx
,
4479 struct si_function_info
*fninfo
)
4481 ctx
->param_rw_buffers
= add_arg(fninfo
, ARG_SGPR
,
4482 ac_array_in_const32_addr_space(ctx
->v4i32
));
4483 ctx
->param_bindless_samplers_and_images
= add_arg(fninfo
, ARG_SGPR
,
4484 ac_array_in_const32_addr_space(ctx
->v8i32
));
4487 static void declare_vs_specific_input_sgprs(struct si_shader_context
*ctx
,
4488 struct si_function_info
*fninfo
)
4490 ctx
->param_vs_state_bits
= add_arg(fninfo
, ARG_SGPR
, ctx
->i32
);
4491 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.base_vertex
);
4492 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.start_instance
);
4493 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.draw_id
);
4496 static void declare_vs_input_vgprs(struct si_shader_context
*ctx
,
4497 struct si_function_info
*fninfo
,
4498 unsigned *num_prolog_vgprs
)
4500 struct si_shader
*shader
= ctx
->shader
;
4502 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.vertex_id
);
4503 if (shader
->key
.as_ls
) {
4504 ctx
->param_rel_auto_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4505 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4507 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4508 ctx
->param_vs_prim_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4510 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* unused */
4512 if (!shader
->is_gs_copy_shader
) {
4513 /* Vertex load indices. */
4514 ctx
->param_vertex_index0
= fninfo
->num_params
;
4515 for (unsigned i
= 0; i
< shader
->selector
->info
.num_inputs
; i
++)
4516 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4517 *num_prolog_vgprs
+= shader
->selector
->info
.num_inputs
;
4521 static void declare_vs_blit_inputs(struct si_shader_context
*ctx
,
4522 struct si_function_info
*fninfo
,
4523 unsigned vs_blit_property
)
4525 ctx
->param_vs_blit_inputs
= fninfo
->num_params
;
4526 add_arg(fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x1, y1 */
4527 add_arg(fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x2, y2 */
4528 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* depth */
4530 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
4531 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color0 */
4532 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color1 */
4533 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color2 */
4534 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* color3 */
4535 } else if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
) {
4536 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x1 */
4537 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y1 */
4538 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x2 */
4539 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y2 */
4540 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.z */
4541 add_arg(fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.w */
4545 static void declare_tes_input_vgprs(struct si_shader_context
*ctx
,
4546 struct si_function_info
*fninfo
)
4548 ctx
->param_tes_u
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4549 ctx
->param_tes_v
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4550 ctx
->param_tes_rel_patch_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4551 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tes_patch_id
);
4555 /* Convenient merged shader definitions. */
4556 SI_SHADER_MERGED_VERTEX_TESSCTRL
= PIPE_SHADER_TYPES
,
4557 SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
,
4560 static void create_function(struct si_shader_context
*ctx
)
4562 struct si_shader
*shader
= ctx
->shader
;
4563 struct si_function_info fninfo
;
4564 LLVMTypeRef returns
[16+32*4];
4565 unsigned i
, num_return_sgprs
;
4566 unsigned num_returns
= 0;
4567 unsigned num_prolog_vgprs
= 0;
4568 unsigned type
= ctx
->type
;
4569 unsigned vs_blit_property
=
4570 shader
->selector
->info
.properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
4572 si_init_function_info(&fninfo
);
4574 /* Set MERGED shaders. */
4575 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
4576 if (shader
->key
.as_ls
|| type
== PIPE_SHADER_TESS_CTRL
)
4577 type
= SI_SHADER_MERGED_VERTEX_TESSCTRL
; /* LS or HS */
4578 else if (shader
->key
.as_es
|| type
== PIPE_SHADER_GEOMETRY
)
4579 type
= SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
;
4582 LLVMTypeRef v3i32
= LLVMVectorType(ctx
->i32
, 3);
4585 case PIPE_SHADER_VERTEX
:
4586 declare_global_desc_pointers(ctx
, &fninfo
);
4588 if (vs_blit_property
) {
4589 declare_vs_blit_inputs(ctx
, &fninfo
, vs_blit_property
);
4592 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4596 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4597 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4598 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4599 ac_array_in_const32_addr_space(ctx
->v4i32
));
4601 if (shader
->key
.as_es
) {
4602 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4603 } else if (shader
->key
.as_ls
) {
4604 /* no extra parameters */
4606 if (shader
->is_gs_copy_shader
) {
4607 fninfo
.num_params
= ctx
->param_vs_state_bits
+ 1;
4608 fninfo
.num_sgpr_params
= fninfo
.num_params
;
4611 /* The locations of the other parameters are assigned dynamically. */
4612 declare_streamout_params(ctx
, &shader
->selector
->so
,
4617 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4620 if (shader
->key
.opt
.vs_as_prim_discard_cs
) {
4621 for (i
= 0; i
< 4; i
++)
4622 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4626 case PIPE_SHADER_TESS_CTRL
: /* GFX6-GFX8 */
4627 declare_global_desc_pointers(ctx
, &fninfo
);
4628 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4629 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4630 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4631 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4632 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4633 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4634 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4637 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_patch_id
);
4638 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_rel_ids
);
4640 /* param_tcs_offchip_offset and param_tcs_factor_offset are
4641 * placed after the user SGPRs.
4643 for (i
= 0; i
< GFX6_TCS_NUM_USER_SGPR
+ 2; i
++)
4644 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4645 for (i
= 0; i
< 11; i
++)
4646 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4649 case SI_SHADER_MERGED_VERTEX_TESSCTRL
:
4650 /* Merged stages have 8 system SGPRs at the beginning. */
4651 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_HS */
4652 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4653 ctx
->type
== PIPE_SHADER_TESS_CTRL
);
4654 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4655 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4656 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4657 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4658 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4659 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4661 declare_global_desc_pointers(ctx
, &fninfo
);
4662 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4663 ctx
->type
== PIPE_SHADER_VERTEX
);
4664 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4666 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4667 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4668 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4669 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4670 ac_array_in_const32_addr_space(ctx
->v4i32
));
4672 /* VGPRs (first TCS, then VS) */
4673 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_patch_id
);
4674 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.tcs_rel_ids
);
4676 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4677 declare_vs_input_vgprs(ctx
, &fninfo
,
4680 /* LS return values are inputs to the TCS main shader part. */
4681 for (i
= 0; i
< 8 + GFX9_TCS_NUM_USER_SGPR
; i
++)
4682 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4683 for (i
= 0; i
< 2; i
++)
4684 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4686 /* TCS return values are inputs to the TCS epilog.
4688 * param_tcs_offchip_offset, param_tcs_factor_offset,
4689 * param_tcs_offchip_layout, and param_rw_buffers
4690 * should be passed to the epilog.
4692 for (i
= 0; i
<= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
; i
++)
4693 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4694 for (i
= 0; i
< 11; i
++)
4695 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4699 case SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
:
4700 /* Merged stages have 8 system SGPRs at the beginning. */
4701 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_GS */
4702 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4703 ctx
->type
== PIPE_SHADER_GEOMETRY
);
4704 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4705 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4706 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4707 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4708 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS << 8) */
4709 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS >> 24) */
4711 declare_global_desc_pointers(ctx
, &fninfo
);
4712 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4713 (ctx
->type
== PIPE_SHADER_VERTEX
||
4714 ctx
->type
== PIPE_SHADER_TESS_EVAL
));
4715 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4716 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4718 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4719 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4720 ctx
->param_tes_offchip_addr
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4721 /* Declare as many input SGPRs as the VS has. */
4724 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4725 ctx
->param_vertex_buffers
= add_arg(&fninfo
, ARG_SGPR
,
4726 ac_array_in_const32_addr_space(ctx
->v4i32
));
4729 /* VGPRs (first GS, then VS/TES) */
4730 ctx
->param_gs_vtx01_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4731 ctx
->param_gs_vtx23_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4732 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4733 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4734 ctx
->param_gs_vtx45_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4736 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4737 declare_vs_input_vgprs(ctx
, &fninfo
,
4739 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
4740 declare_tes_input_vgprs(ctx
, &fninfo
);
4743 if (ctx
->type
== PIPE_SHADER_VERTEX
||
4744 ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
4745 unsigned num_user_sgprs
;
4747 if (ctx
->type
== PIPE_SHADER_VERTEX
)
4748 num_user_sgprs
= GFX9_VSGS_NUM_USER_SGPR
;
4750 num_user_sgprs
= GFX9_TESGS_NUM_USER_SGPR
;
4752 /* ES return values are inputs to GS. */
4753 for (i
= 0; i
< 8 + num_user_sgprs
; i
++)
4754 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4755 for (i
= 0; i
< 5; i
++)
4756 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4760 case PIPE_SHADER_TESS_EVAL
:
4761 declare_global_desc_pointers(ctx
, &fninfo
);
4762 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4763 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4764 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4765 ctx
->param_tes_offchip_addr
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4767 if (shader
->key
.as_es
) {
4768 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4769 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4770 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4772 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4773 declare_streamout_params(ctx
, &shader
->selector
->so
,
4775 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4779 declare_tes_input_vgprs(ctx
, &fninfo
);
4782 case PIPE_SHADER_GEOMETRY
:
4783 declare_global_desc_pointers(ctx
, &fninfo
);
4784 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4785 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4786 ctx
->param_gs_wave_id
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4789 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[0]);
4790 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[1]);
4791 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4792 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[2]);
4793 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[3]);
4794 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[4]);
4795 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[5]);
4796 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4799 case PIPE_SHADER_FRAGMENT
:
4800 declare_global_desc_pointers(ctx
, &fninfo
);
4801 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4802 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
4803 add_arg_assign_checked(&fninfo
, ARG_SGPR
, ctx
->i32
,
4804 &ctx
->abi
.prim_mask
, SI_PARAM_PRIM_MASK
);
4806 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_SAMPLE
);
4807 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTER
);
4808 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTROID
);
4809 add_arg_checked(&fninfo
, ARG_VGPR
, v3i32
, SI_PARAM_PERSP_PULL_MODEL
);
4810 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_SAMPLE
);
4811 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTER
);
4812 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTROID
);
4813 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->f32
, SI_PARAM_LINE_STIPPLE_TEX
);
4814 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4815 &ctx
->abi
.frag_pos
[0], SI_PARAM_POS_X_FLOAT
);
4816 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4817 &ctx
->abi
.frag_pos
[1], SI_PARAM_POS_Y_FLOAT
);
4818 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4819 &ctx
->abi
.frag_pos
[2], SI_PARAM_POS_Z_FLOAT
);
4820 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4821 &ctx
->abi
.frag_pos
[3], SI_PARAM_POS_W_FLOAT
);
4822 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4823 &ctx
->abi
.front_face
, SI_PARAM_FRONT_FACE
);
4824 shader
->info
.face_vgpr_index
= 20;
4825 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4826 &ctx
->abi
.ancillary
, SI_PARAM_ANCILLARY
);
4827 shader
->info
.ancillary_vgpr_index
= 21;
4828 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4829 &ctx
->abi
.sample_coverage
, SI_PARAM_SAMPLE_COVERAGE
);
4830 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->i32
, SI_PARAM_POS_FIXED_PT
);
4832 /* Color inputs from the prolog. */
4833 if (shader
->selector
->info
.colors_read
) {
4834 unsigned num_color_elements
=
4835 util_bitcount(shader
->selector
->info
.colors_read
);
4837 assert(fninfo
.num_params
+ num_color_elements
<= ARRAY_SIZE(fninfo
.types
));
4838 for (i
= 0; i
< num_color_elements
; i
++)
4839 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
4841 num_prolog_vgprs
+= num_color_elements
;
4844 /* Outputs for the epilog. */
4845 num_return_sgprs
= SI_SGPR_ALPHA_REF
+ 1;
4848 util_bitcount(shader
->selector
->info
.colors_written
) * 4 +
4849 shader
->selector
->info
.writes_z
+
4850 shader
->selector
->info
.writes_stencil
+
4851 shader
->selector
->info
.writes_samplemask
+
4852 1 /* SampleMaskIn */;
4854 num_returns
= MAX2(num_returns
,
4856 PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
4858 for (i
= 0; i
< num_return_sgprs
; i
++)
4859 returns
[i
] = ctx
->i32
;
4860 for (; i
< num_returns
; i
++)
4861 returns
[i
] = ctx
->f32
;
4864 case PIPE_SHADER_COMPUTE
:
4865 declare_global_desc_pointers(ctx
, &fninfo
);
4866 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4867 if (shader
->selector
->info
.uses_grid_size
)
4868 add_arg_assign(&fninfo
, ARG_SGPR
, v3i32
, &ctx
->abi
.num_work_groups
);
4869 if (shader
->selector
->info
.uses_block_size
&&
4870 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] == 0)
4871 ctx
->param_block_size
= add_arg(&fninfo
, ARG_SGPR
, v3i32
);
4873 unsigned cs_user_data_dwords
=
4874 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_USER_DATA_DWORDS
];
4875 if (cs_user_data_dwords
) {
4876 ctx
->param_cs_user_data
= add_arg(&fninfo
, ARG_SGPR
,
4877 LLVMVectorType(ctx
->i32
, cs_user_data_dwords
));
4880 for (i
= 0; i
< 3; i
++) {
4881 ctx
->abi
.workgroup_ids
[i
] = NULL
;
4882 if (shader
->selector
->info
.uses_block_id
[i
])
4883 add_arg_assign(&fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.workgroup_ids
[i
]);
4886 add_arg_assign(&fninfo
, ARG_VGPR
, v3i32
, &ctx
->abi
.local_invocation_ids
);
4889 assert(0 && "unimplemented shader");
4893 si_create_function(ctx
, "main", returns
, num_returns
, &fninfo
,
4894 si_get_max_workgroup_size(shader
));
4896 /* Reserve register locations for VGPR inputs the PS prolog may need. */
4897 if (ctx
->type
== PIPE_SHADER_FRAGMENT
&& !ctx
->shader
->is_monolithic
) {
4898 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
4899 "InitialPSInputAddr",
4900 S_0286D0_PERSP_SAMPLE_ENA(1) |
4901 S_0286D0_PERSP_CENTER_ENA(1) |
4902 S_0286D0_PERSP_CENTROID_ENA(1) |
4903 S_0286D0_LINEAR_SAMPLE_ENA(1) |
4904 S_0286D0_LINEAR_CENTER_ENA(1) |
4905 S_0286D0_LINEAR_CENTROID_ENA(1) |
4906 S_0286D0_FRONT_FACE_ENA(1) |
4907 S_0286D0_ANCILLARY_ENA(1) |
4908 S_0286D0_POS_FIXED_PT_ENA(1));
4911 shader
->info
.num_input_sgprs
= 0;
4912 shader
->info
.num_input_vgprs
= 0;
4914 for (i
= 0; i
< fninfo
.num_sgpr_params
; ++i
)
4915 shader
->info
.num_input_sgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
4917 for (; i
< fninfo
.num_params
; ++i
)
4918 shader
->info
.num_input_vgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
4920 assert(shader
->info
.num_input_vgprs
>= num_prolog_vgprs
);
4921 shader
->info
.num_input_vgprs
-= num_prolog_vgprs
;
4923 if (shader
->key
.as_ls
|| ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
4924 if (USE_LDS_SYMBOLS
&& HAVE_LLVM
>= 0x0900) {
4925 /* The LSHS size is not known until draw time, so we append it
4926 * at the end of whatever LDS use there may be in the rest of
4927 * the shader (currently none, unless LLVM decides to do its
4928 * own LDS-based lowering).
4930 ctx
->ac
.lds
= LLVMAddGlobalInAddressSpace(
4931 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
4932 "__lds_end", AC_ADDR_SPACE_LDS
);
4933 LLVMSetAlignment(ctx
->ac
.lds
, 256);
4935 ac_declare_lds_as_pointer(&ctx
->ac
);
4941 * Load ESGS and GSVS ring buffer resource descriptors and save the variables
4944 static void preload_ring_buffers(struct si_shader_context
*ctx
)
4946 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4948 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
4949 ctx
->param_rw_buffers
);
4951 if (ctx
->shader
->key
.as_es
|| ctx
->type
== PIPE_SHADER_GEOMETRY
) {
4952 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
4954 ctx
->type
== PIPE_SHADER_GEOMETRY
? SI_GS_RING_ESGS
4956 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, ring
, 0);
4959 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4961 if (USE_LDS_SYMBOLS
&& HAVE_LLVM
>= 0x0900) {
4962 /* Declare the ESGS ring as an explicit LDS symbol.
4963 * For monolithic shaders, we declare the ring only once.
4965 * We declare it with 64KB alignment as a hint that the
4966 * pointer value will always be 0.
4968 ctx
->esgs_ring
= LLVMAddGlobalInAddressSpace(
4969 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
4972 LLVMSetAlignment(ctx
->esgs_ring
, 64 * 1024);
4974 ac_declare_lds_as_pointer(&ctx
->ac
);
4975 ctx
->esgs_ring
= ctx
->ac
.lds
;
4980 if (ctx
->shader
->is_gs_copy_shader
) {
4981 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
4984 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4985 } else if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
4986 const struct si_shader_selector
*sel
= ctx
->shader
->selector
;
4987 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
4988 LLVMValueRef base_ring
;
4990 base_ring
= ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4992 /* The conceptual layout of the GSVS ring is
4993 * v0c0 .. vLv0 v0c1 .. vLc1 ..
4994 * but the real memory layout is swizzled across
4996 * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL
4998 * Override the buffer descriptor accordingly.
5000 LLVMTypeRef v2i64
= LLVMVectorType(ctx
->i64
, 2);
5001 uint64_t stream_offset
= 0;
5003 for (unsigned stream
= 0; stream
< 4; ++stream
) {
5004 unsigned num_components
;
5006 unsigned num_records
;
5007 LLVMValueRef ring
, tmp
;
5009 num_components
= sel
->info
.num_stream_output_components
[stream
];
5010 if (!num_components
)
5013 stride
= 4 * num_components
* sel
->gs_max_out_vertices
;
5015 /* Limit on the stride field for <= GFX7. */
5016 assert(stride
< (1 << 14));
5020 ring
= LLVMBuildBitCast(builder
, base_ring
, v2i64
, "");
5021 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_0
, "");
5022 tmp
= LLVMBuildAdd(builder
, tmp
,
5023 LLVMConstInt(ctx
->i64
,
5024 stream_offset
, 0), "");
5025 stream_offset
+= stride
* 64;
5027 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_0
, "");
5028 ring
= LLVMBuildBitCast(builder
, ring
, ctx
->v4i32
, "");
5029 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_1
, "");
5030 tmp
= LLVMBuildOr(builder
, tmp
,
5031 LLVMConstInt(ctx
->i32
,
5032 S_008F04_STRIDE(stride
) |
5033 S_008F04_SWIZZLE_ENABLE(1), 0), "");
5034 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_1
, "");
5035 ring
= LLVMBuildInsertElement(builder
, ring
,
5036 LLVMConstInt(ctx
->i32
, num_records
, 0),
5037 LLVMConstInt(ctx
->i32
, 2, 0), "");
5038 ring
= LLVMBuildInsertElement(builder
, ring
,
5039 LLVMConstInt(ctx
->i32
,
5040 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
5041 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
5042 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
5043 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
5044 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
5045 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
) |
5046 S_008F0C_ELEMENT_SIZE(1) | /* element_size = 4 (bytes) */
5047 S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */
5048 S_008F0C_ADD_TID_ENABLE(1),
5050 LLVMConstInt(ctx
->i32
, 3, 0), "");
5052 ctx
->gsvs_ring
[stream
] = ring
;
5054 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
5055 ctx
->tess_offchip_ring
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TES
);
5059 static void si_llvm_emit_polygon_stipple(struct si_shader_context
*ctx
,
5060 LLVMValueRef param_rw_buffers
,
5061 unsigned param_pos_fixed_pt
)
5063 LLVMBuilderRef builder
= ctx
->ac
.builder
;
5064 LLVMValueRef slot
, desc
, offset
, row
, bit
, address
[2];
5066 /* Use the fixed-point gl_FragCoord input.
5067 * Since the stipple pattern is 32x32 and it repeats, just get 5 bits
5068 * per coordinate to get the repeating effect.
5070 address
[0] = si_unpack_param(ctx
, param_pos_fixed_pt
, 0, 5);
5071 address
[1] = si_unpack_param(ctx
, param_pos_fixed_pt
, 16, 5);
5073 /* Load the buffer descriptor. */
5074 slot
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_POLY_STIPPLE
, 0);
5075 desc
= ac_build_load_to_sgpr(&ctx
->ac
, param_rw_buffers
, slot
);
5077 /* The stipple pattern is 32x32, each row has 32 bits. */
5078 offset
= LLVMBuildMul(builder
, address
[1],
5079 LLVMConstInt(ctx
->i32
, 4, 0), "");
5080 row
= buffer_load_const(ctx
, desc
, offset
);
5081 row
= ac_to_integer(&ctx
->ac
, row
);
5082 bit
= LLVMBuildLShr(builder
, row
, address
[0], "");
5083 bit
= LLVMBuildTrunc(builder
, bit
, ctx
->i1
, "");
5084 ac_build_kill_if_false(&ctx
->ac
, bit
);
5087 /* For the UMR disassembler. */
5088 #define DEBUGGER_END_OF_CODE_MARKER 0xbf9f0000 /* invalid instruction */
5089 #define DEBUGGER_NUM_MARKERS 5
5091 static bool si_shader_binary_open(struct si_screen
*screen
,
5092 struct si_shader
*shader
,
5093 struct ac_rtld_binary
*rtld
)
5095 const struct si_shader_selector
*sel
= shader
->selector
;
5096 enum pipe_shader_type shader_type
= sel
? sel
->type
: PIPE_SHADER_COMPUTE
;
5097 const char *part_elfs
[5];
5098 size_t part_sizes
[5];
5099 unsigned num_parts
= 0;
5101 #define add_part(shader_or_part) \
5102 if (shader_or_part) { \
5103 part_elfs[num_parts] = (shader_or_part)->binary.elf_buffer; \
5104 part_sizes[num_parts] = (shader_or_part)->binary.elf_size; \
5108 add_part(shader
->prolog
);
5109 add_part(shader
->previous_stage
);
5110 add_part(shader
->prolog2
);
5112 add_part(shader
->epilog
);
5116 struct ac_rtld_symbol lds_symbols
[1];
5117 unsigned num_lds_symbols
= 0;
5119 if (sel
&& screen
->info
.chip_class
>= GFX9
&&
5120 sel
->type
== PIPE_SHADER_GEOMETRY
&& !shader
->is_gs_copy_shader
) {
5121 /* We add this symbol even on LLVM <= 8 to ensure that
5122 * shader->config.lds_size is set correctly below.
5124 struct ac_rtld_symbol
*sym
= &lds_symbols
[num_lds_symbols
++];
5125 sym
->name
= "esgs_ring";
5126 sym
->size
= shader
->gs_info
.esgs_ring_size
;
5127 sym
->align
= 64 * 1024;
5130 bool ok
= ac_rtld_open(rtld
, (struct ac_rtld_open_info
){
5131 .info
= &screen
->info
,
5133 .halt_at_entry
= screen
->options
.halt_shaders
,
5135 .shader_type
= tgsi_processor_to_shader_stage(shader_type
),
5136 .num_parts
= num_parts
,
5137 .elf_ptrs
= part_elfs
,
5138 .elf_sizes
= part_sizes
,
5139 .num_shared_lds_symbols
= num_lds_symbols
,
5140 .shared_lds_symbols
= lds_symbols
});
5142 if (rtld
->lds_size
> 0) {
5143 unsigned alloc_granularity
= screen
->info
.chip_class
>= GFX7
? 512 : 256;
5144 shader
->config
.lds_size
=
5145 align(rtld
->lds_size
, alloc_granularity
) / alloc_granularity
;
5151 static unsigned si_get_shader_binary_size(struct si_screen
*screen
, struct si_shader
*shader
)
5153 struct ac_rtld_binary rtld
;
5154 si_shader_binary_open(screen
, shader
, &rtld
);
5155 return rtld
.rx_size
;
5159 static bool si_get_external_symbol(void *data
, const char *name
, uint64_t *value
)
5161 uint64_t *scratch_va
= data
;
5163 if (!strcmp(scratch_rsrc_dword0_symbol
, name
)) {
5164 *value
= (uint32_t)*scratch_va
;
5167 if (!strcmp(scratch_rsrc_dword1_symbol
, name
)) {
5168 /* Enable scratch coalescing. */
5169 *value
= S_008F04_BASE_ADDRESS_HI(*scratch_va
>> 32) |
5170 S_008F04_SWIZZLE_ENABLE(1);
5171 if (HAVE_LLVM
< 0x0800) {
5172 /* Old LLVM created an R_ABS32_HI relocation for
5182 bool si_shader_binary_upload(struct si_screen
*sscreen
, struct si_shader
*shader
,
5183 uint64_t scratch_va
)
5185 struct ac_rtld_binary binary
;
5186 if (!si_shader_binary_open(sscreen
, shader
, &binary
))
5189 si_resource_reference(&shader
->bo
, NULL
);
5190 shader
->bo
= si_aligned_buffer_create(&sscreen
->b
,
5191 sscreen
->cpdma_prefetch_writes_memory
?
5192 0 : SI_RESOURCE_FLAG_READ_ONLY
,
5193 PIPE_USAGE_IMMUTABLE
,
5194 align(binary
.rx_size
, SI_CPDMA_ALIGNMENT
),
5200 struct ac_rtld_upload_info u
= {};
5202 u
.get_external_symbol
= si_get_external_symbol
;
5203 u
.cb_data
= &scratch_va
;
5204 u
.rx_va
= shader
->bo
->gpu_address
;
5205 u
.rx_ptr
= sscreen
->ws
->buffer_map(shader
->bo
->buf
, NULL
,
5206 PIPE_TRANSFER_READ_WRITE
|
5207 PIPE_TRANSFER_UNSYNCHRONIZED
|
5208 RADEON_TRANSFER_TEMPORARY
);
5212 bool ok
= ac_rtld_upload(&u
);
5214 sscreen
->ws
->buffer_unmap(shader
->bo
->buf
);
5215 ac_rtld_close(&binary
);
5220 static void si_shader_dump_disassembly(struct si_screen
*screen
,
5221 const struct si_shader_binary
*binary
,
5222 struct pipe_debug_callback
*debug
,
5223 const char *name
, FILE *file
)
5225 struct ac_rtld_binary rtld_binary
;
5227 if (!ac_rtld_open(&rtld_binary
, (struct ac_rtld_open_info
){
5228 .info
= &screen
->info
,
5230 .elf_ptrs
= &binary
->elf_buffer
,
5231 .elf_sizes
= &binary
->elf_size
}))
5237 if (!ac_rtld_get_section_by_name(&rtld_binary
, ".AMDGPU.disasm", &disasm
, &nbytes
))
5240 if (nbytes
> INT_MAX
)
5243 if (debug
&& debug
->debug_message
) {
5244 /* Very long debug messages are cut off, so send the
5245 * disassembly one line at a time. This causes more
5246 * overhead, but on the plus side it simplifies
5247 * parsing of resulting logs.
5249 pipe_debug_message(debug
, SHADER_INFO
,
5250 "Shader Disassembly Begin");
5253 while (line
< nbytes
) {
5254 int count
= nbytes
- line
;
5255 const char *nl
= memchr(disasm
+ line
, '\n', nbytes
- line
);
5257 count
= nl
- (disasm
+ line
);
5260 pipe_debug_message(debug
, SHADER_INFO
,
5261 "%.*s", count
, disasm
+ line
);
5267 pipe_debug_message(debug
, SHADER_INFO
,
5268 "Shader Disassembly End");
5272 fprintf(file
, "Shader %s disassembly:\n", name
);
5273 fprintf(file
, "%*s", (int)nbytes
, disasm
);
5277 ac_rtld_close(&rtld_binary
);
5280 static void si_calculate_max_simd_waves(struct si_shader
*shader
)
5282 struct si_screen
*sscreen
= shader
->selector
->screen
;
5283 struct ac_shader_config
*conf
= &shader
->config
;
5284 unsigned num_inputs
= shader
->selector
->info
.num_inputs
;
5285 unsigned lds_increment
= sscreen
->info
.chip_class
>= GFX7
? 512 : 256;
5286 unsigned lds_per_wave
= 0;
5287 unsigned max_simd_waves
;
5289 max_simd_waves
= ac_get_max_simd_waves(sscreen
->info
.family
);
5291 /* Compute LDS usage for PS. */
5292 switch (shader
->selector
->type
) {
5293 case PIPE_SHADER_FRAGMENT
:
5294 /* The minimum usage per wave is (num_inputs * 48). The maximum
5295 * usage is (num_inputs * 48 * 16).
5296 * We can get anything in between and it varies between waves.
5298 * The 48 bytes per input for a single primitive is equal to
5299 * 4 bytes/component * 4 components/input * 3 points.
5301 * Other stages don't know the size at compile time or don't
5302 * allocate LDS per wave, but instead they do it per thread group.
5304 lds_per_wave
= conf
->lds_size
* lds_increment
+
5305 align(num_inputs
* 48, lds_increment
);
5307 case PIPE_SHADER_COMPUTE
:
5308 if (shader
->selector
) {
5309 unsigned max_workgroup_size
=
5310 si_get_max_workgroup_size(shader
);
5311 lds_per_wave
= (conf
->lds_size
* lds_increment
) /
5312 DIV_ROUND_UP(max_workgroup_size
, 64);
5317 /* Compute the per-SIMD wave counts. */
5318 if (conf
->num_sgprs
) {
5320 MIN2(max_simd_waves
,
5321 ac_get_num_physical_sgprs(sscreen
->info
.chip_class
) / conf
->num_sgprs
);
5324 if (conf
->num_vgprs
)
5325 max_simd_waves
= MIN2(max_simd_waves
, 256 / conf
->num_vgprs
);
5327 /* LDS is 64KB per CU (4 SIMDs), which is 16KB per SIMD (usage above
5328 * 16KB makes some SIMDs unoccupied). */
5330 max_simd_waves
= MIN2(max_simd_waves
, 16384 / lds_per_wave
);
5332 shader
->info
.max_simd_waves
= max_simd_waves
;
5335 void si_shader_dump_stats_for_shader_db(struct si_screen
*screen
,
5336 struct si_shader
*shader
,
5337 struct pipe_debug_callback
*debug
)
5339 const struct ac_shader_config
*conf
= &shader
->config
;
5341 if (screen
->options
.debug_disassembly
)
5342 si_shader_dump_disassembly(screen
, &shader
->binary
, debug
, "main", NULL
);
5344 pipe_debug_message(debug
, SHADER_INFO
,
5345 "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d "
5346 "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d "
5347 "Spilled VGPRs: %d PrivMem VGPRs: %d",
5348 conf
->num_sgprs
, conf
->num_vgprs
,
5349 si_get_shader_binary_size(screen
, shader
),
5350 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5351 shader
->info
.max_simd_waves
, conf
->spilled_sgprs
,
5352 conf
->spilled_vgprs
, shader
->info
.private_mem_vgprs
);
5355 static void si_shader_dump_stats(struct si_screen
*sscreen
,
5356 struct si_shader
*shader
,
5359 bool check_debug_option
)
5361 const struct ac_shader_config
*conf
= &shader
->config
;
5363 if (!check_debug_option
||
5364 si_can_dump_shader(sscreen
, processor
)) {
5365 if (processor
== PIPE_SHADER_FRAGMENT
) {
5366 fprintf(file
, "*** SHADER CONFIG ***\n"
5367 "SPI_PS_INPUT_ADDR = 0x%04x\n"
5368 "SPI_PS_INPUT_ENA = 0x%04x\n",
5369 conf
->spi_ps_input_addr
, conf
->spi_ps_input_ena
);
5372 fprintf(file
, "*** SHADER STATS ***\n"
5375 "Spilled SGPRs: %d\n"
5376 "Spilled VGPRs: %d\n"
5377 "Private memory VGPRs: %d\n"
5378 "Code Size: %d bytes\n"
5380 "Scratch: %d bytes per wave\n"
5382 "********************\n\n\n",
5383 conf
->num_sgprs
, conf
->num_vgprs
,
5384 conf
->spilled_sgprs
, conf
->spilled_vgprs
,
5385 shader
->info
.private_mem_vgprs
,
5386 si_get_shader_binary_size(sscreen
, shader
),
5387 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5388 shader
->info
.max_simd_waves
);
5392 const char *si_get_shader_name(const struct si_shader
*shader
, unsigned processor
)
5394 switch (processor
) {
5395 case PIPE_SHADER_VERTEX
:
5396 if (shader
->key
.as_es
)
5397 return "Vertex Shader as ES";
5398 else if (shader
->key
.as_ls
)
5399 return "Vertex Shader as LS";
5400 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
5401 return "Vertex Shader as Primitive Discard CS";
5403 return "Vertex Shader as VS";
5404 case PIPE_SHADER_TESS_CTRL
:
5405 return "Tessellation Control Shader";
5406 case PIPE_SHADER_TESS_EVAL
:
5407 if (shader
->key
.as_es
)
5408 return "Tessellation Evaluation Shader as ES";
5410 return "Tessellation Evaluation Shader as VS";
5411 case PIPE_SHADER_GEOMETRY
:
5412 if (shader
->is_gs_copy_shader
)
5413 return "GS Copy Shader as VS";
5415 return "Geometry Shader";
5416 case PIPE_SHADER_FRAGMENT
:
5417 return "Pixel Shader";
5418 case PIPE_SHADER_COMPUTE
:
5419 return "Compute Shader";
5421 return "Unknown Shader";
5425 void si_shader_dump(struct si_screen
*sscreen
, struct si_shader
*shader
,
5426 struct pipe_debug_callback
*debug
, unsigned processor
,
5427 FILE *file
, bool check_debug_option
)
5429 if (!check_debug_option
||
5430 si_can_dump_shader(sscreen
, processor
))
5431 si_dump_shader_key(processor
, shader
, file
);
5433 if (!check_debug_option
&& shader
->binary
.llvm_ir_string
) {
5434 if (shader
->previous_stage
&&
5435 shader
->previous_stage
->binary
.llvm_ir_string
) {
5436 fprintf(file
, "\n%s - previous stage - LLVM IR:\n\n",
5437 si_get_shader_name(shader
, processor
));
5438 fprintf(file
, "%s\n", shader
->previous_stage
->binary
.llvm_ir_string
);
5441 fprintf(file
, "\n%s - main shader part - LLVM IR:\n\n",
5442 si_get_shader_name(shader
, processor
));
5443 fprintf(file
, "%s\n", shader
->binary
.llvm_ir_string
);
5446 if (!check_debug_option
||
5447 (si_can_dump_shader(sscreen
, processor
) &&
5448 !(sscreen
->debug_flags
& DBG(NO_ASM
)))) {
5449 fprintf(file
, "\n%s:\n", si_get_shader_name(shader
, processor
));
5452 si_shader_dump_disassembly(sscreen
, &shader
->prolog
->binary
,
5453 debug
, "prolog", file
);
5454 if (shader
->previous_stage
)
5455 si_shader_dump_disassembly(sscreen
, &shader
->previous_stage
->binary
,
5456 debug
, "previous stage", file
);
5457 if (shader
->prolog2
)
5458 si_shader_dump_disassembly(sscreen
, &shader
->prolog2
->binary
,
5459 debug
, "prolog2", file
);
5461 si_shader_dump_disassembly(sscreen
, &shader
->binary
, debug
, "main", file
);
5464 si_shader_dump_disassembly(sscreen
, &shader
->epilog
->binary
,
5465 debug
, "epilog", file
);
5466 fprintf(file
, "\n");
5469 si_shader_dump_stats(sscreen
, shader
, processor
, file
,
5470 check_debug_option
);
5473 static int si_compile_llvm(struct si_screen
*sscreen
,
5474 struct si_shader_binary
*binary
,
5475 struct ac_shader_config
*conf
,
5476 struct ac_llvm_compiler
*compiler
,
5478 struct pipe_debug_callback
*debug
,
5481 bool less_optimized
)
5483 unsigned count
= p_atomic_inc_return(&sscreen
->num_compilations
);
5485 if (si_can_dump_shader(sscreen
, processor
)) {
5486 fprintf(stderr
, "radeonsi: Compiling shader %d\n", count
);
5488 if (!(sscreen
->debug_flags
& (DBG(NO_IR
) | DBG(PREOPT_IR
)))) {
5489 fprintf(stderr
, "%s LLVM IR:\n\n", name
);
5490 ac_dump_module(mod
);
5491 fprintf(stderr
, "\n");
5495 if (sscreen
->record_llvm_ir
) {
5496 char *ir
= LLVMPrintModuleToString(mod
);
5497 binary
->llvm_ir_string
= strdup(ir
);
5498 LLVMDisposeMessage(ir
);
5501 if (!si_replace_shader(count
, binary
)) {
5502 unsigned r
= si_llvm_compile(mod
, binary
, compiler
, debug
,
5508 struct ac_rtld_binary rtld
;
5509 if (!ac_rtld_open(&rtld
, (struct ac_rtld_open_info
){
5510 .info
= &sscreen
->info
,
5512 .elf_ptrs
= &binary
->elf_buffer
,
5513 .elf_sizes
= &binary
->elf_size
}))
5516 bool ok
= ac_rtld_read_config(&rtld
, conf
);
5517 ac_rtld_close(&rtld
);
5521 /* Enable 64-bit and 16-bit denormals, because there is no performance
5524 * If denormals are enabled, all floating-point output modifiers are
5527 * Don't enable denormals for 32-bit floats, because:
5528 * - Floating-point output modifiers would be ignored by the hw.
5529 * - Some opcodes don't support denormals, such as v_mad_f32. We would
5530 * have to stop using those.
5531 * - GFX6 & GFX7 would be very slow.
5533 conf
->float_mode
|= V_00B028_FP_64_DENORMS
;
5538 static void si_llvm_build_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
)
5540 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
5541 LLVMBuildRetVoid(ctx
->ac
.builder
);
5543 LLVMBuildRet(ctx
->ac
.builder
, ret
);
5546 /* Generate code for the hardware VS shader stage to go with a geometry shader */
5548 si_generate_gs_copy_shader(struct si_screen
*sscreen
,
5549 struct ac_llvm_compiler
*compiler
,
5550 struct si_shader_selector
*gs_selector
,
5551 struct pipe_debug_callback
*debug
)
5553 struct si_shader_context ctx
;
5554 struct si_shader
*shader
;
5555 LLVMBuilderRef builder
;
5556 struct si_shader_output_values outputs
[SI_MAX_VS_OUTPUTS
];
5557 struct tgsi_shader_info
*gsinfo
= &gs_selector
->info
;
5561 shader
= CALLOC_STRUCT(si_shader
);
5565 /* We can leave the fence as permanently signaled because the GS copy
5566 * shader only becomes visible globally after it has been compiled. */
5567 util_queue_fence_init(&shader
->ready
);
5569 shader
->selector
= gs_selector
;
5570 shader
->is_gs_copy_shader
= true;
5572 si_init_shader_ctx(&ctx
, sscreen
, compiler
);
5573 ctx
.shader
= shader
;
5574 ctx
.type
= PIPE_SHADER_VERTEX
;
5576 builder
= ctx
.ac
.builder
;
5578 create_function(&ctx
);
5579 preload_ring_buffers(&ctx
);
5581 LLVMValueRef voffset
=
5582 LLVMBuildMul(ctx
.ac
.builder
, ctx
.abi
.vertex_id
,
5583 LLVMConstInt(ctx
.i32
, 4, 0), "");
5585 /* Fetch the vertex stream ID.*/
5586 LLVMValueRef stream_id
;
5588 if (gs_selector
->so
.num_outputs
)
5589 stream_id
= si_unpack_param(&ctx
, ctx
.param_streamout_config
, 24, 2);
5591 stream_id
= ctx
.i32_0
;
5593 /* Fill in output information. */
5594 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5595 outputs
[i
].semantic_name
= gsinfo
->output_semantic_name
[i
];
5596 outputs
[i
].semantic_index
= gsinfo
->output_semantic_index
[i
];
5598 for (int chan
= 0; chan
< 4; chan
++) {
5599 outputs
[i
].vertex_stream
[chan
] =
5600 (gsinfo
->output_streams
[i
] >> (2 * chan
)) & 3;
5604 LLVMBasicBlockRef end_bb
;
5605 LLVMValueRef switch_inst
;
5607 end_bb
= LLVMAppendBasicBlockInContext(ctx
.ac
.context
, ctx
.main_fn
, "end");
5608 switch_inst
= LLVMBuildSwitch(builder
, stream_id
, end_bb
, 4);
5610 for (int stream
= 0; stream
< 4; stream
++) {
5611 LLVMBasicBlockRef bb
;
5614 if (!gsinfo
->num_stream_output_components
[stream
])
5617 if (stream
> 0 && !gs_selector
->so
.num_outputs
)
5620 bb
= LLVMInsertBasicBlockInContext(ctx
.ac
.context
, end_bb
, "out");
5621 LLVMAddCase(switch_inst
, LLVMConstInt(ctx
.i32
, stream
, 0), bb
);
5622 LLVMPositionBuilderAtEnd(builder
, bb
);
5624 /* Fetch vertex data from GSVS ring */
5626 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5627 for (unsigned chan
= 0; chan
< 4; chan
++) {
5628 if (!(gsinfo
->output_usagemask
[i
] & (1 << chan
)) ||
5629 outputs
[i
].vertex_stream
[chan
] != stream
) {
5630 outputs
[i
].values
[chan
] = LLVMGetUndef(ctx
.f32
);
5634 LLVMValueRef soffset
= LLVMConstInt(ctx
.i32
,
5635 offset
* gs_selector
->gs_max_out_vertices
* 16 * 4, 0);
5638 outputs
[i
].values
[chan
] =
5639 ac_build_buffer_load(&ctx
.ac
,
5640 ctx
.gsvs_ring
[0], 1,
5647 /* Streamout and exports. */
5648 if (gs_selector
->so
.num_outputs
) {
5649 si_llvm_emit_streamout(&ctx
, outputs
,
5650 gsinfo
->num_outputs
,
5655 si_llvm_export_vs(&ctx
, outputs
, gsinfo
->num_outputs
);
5657 LLVMBuildBr(builder
, end_bb
);
5660 LLVMPositionBuilderAtEnd(builder
, end_bb
);
5662 LLVMBuildRetVoid(ctx
.ac
.builder
);
5664 ctx
.type
= PIPE_SHADER_GEOMETRY
; /* override for shader dumping */
5665 si_llvm_optimize_module(&ctx
);
5668 if (si_compile_llvm(sscreen
, &ctx
.shader
->binary
,
5669 &ctx
.shader
->config
, ctx
.compiler
,
5671 debug
, PIPE_SHADER_GEOMETRY
,
5672 "GS Copy Shader", false) == 0) {
5673 if (si_can_dump_shader(sscreen
, PIPE_SHADER_GEOMETRY
))
5674 fprintf(stderr
, "GS Copy Shader:\n");
5675 si_shader_dump(sscreen
, ctx
.shader
, debug
,
5676 PIPE_SHADER_GEOMETRY
, stderr
, true);
5678 if (!ctx
.shader
->config
.scratch_bytes_per_wave
)
5679 ok
= si_shader_binary_upload(sscreen
, ctx
.shader
, 0);
5684 si_llvm_dispose(&ctx
);
5690 si_fix_resource_usage(sscreen
, shader
);
5695 static void si_dump_shader_key_vs(const struct si_shader_key
*key
,
5696 const struct si_vs_prolog_bits
*prolog
,
5697 const char *prefix
, FILE *f
)
5699 fprintf(f
, " %s.instance_divisor_is_one = %u\n",
5700 prefix
, prolog
->instance_divisor_is_one
);
5701 fprintf(f
, " %s.instance_divisor_is_fetched = %u\n",
5702 prefix
, prolog
->instance_divisor_is_fetched
);
5703 fprintf(f
, " %s.unpack_instance_id_from_vertex_id = %u\n",
5704 prefix
, prolog
->unpack_instance_id_from_vertex_id
);
5705 fprintf(f
, " %s.ls_vgpr_fix = %u\n",
5706 prefix
, prolog
->ls_vgpr_fix
);
5708 fprintf(f
, " mono.vs.fetch_opencode = %x\n", key
->mono
.vs_fetch_opencode
);
5709 fprintf(f
, " mono.vs.fix_fetch = {");
5710 for (int i
= 0; i
< SI_MAX_ATTRIBS
; i
++) {
5711 union si_vs_fix_fetch fix
= key
->mono
.vs_fix_fetch
[i
];
5717 fprintf(f
, "%u.%u.%u.%u", fix
.u
.reverse
, fix
.u
.log_size
,
5718 fix
.u
.num_channels_m1
, fix
.u
.format
);
5723 static void si_dump_shader_key(unsigned processor
, const struct si_shader
*shader
,
5726 const struct si_shader_key
*key
= &shader
->key
;
5728 fprintf(f
, "SHADER KEY\n");
5730 switch (processor
) {
5731 case PIPE_SHADER_VERTEX
:
5732 si_dump_shader_key_vs(key
, &key
->part
.vs
.prolog
,
5733 "part.vs.prolog", f
);
5734 fprintf(f
, " as_es = %u\n", key
->as_es
);
5735 fprintf(f
, " as_ls = %u\n", key
->as_ls
);
5736 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5737 key
->mono
.u
.vs_export_prim_id
);
5738 fprintf(f
, " opt.vs_as_prim_discard_cs = %u\n",
5739 key
->opt
.vs_as_prim_discard_cs
);
5740 fprintf(f
, " opt.cs_prim_type = %s\n",
5741 tgsi_primitive_names
[key
->opt
.cs_prim_type
]);
5742 fprintf(f
, " opt.cs_indexed = %u\n",
5743 key
->opt
.cs_indexed
);
5744 fprintf(f
, " opt.cs_instancing = %u\n",
5745 key
->opt
.cs_instancing
);
5746 fprintf(f
, " opt.cs_primitive_restart = %u\n",
5747 key
->opt
.cs_primitive_restart
);
5748 fprintf(f
, " opt.cs_provoking_vertex_first = %u\n",
5749 key
->opt
.cs_provoking_vertex_first
);
5750 fprintf(f
, " opt.cs_need_correct_orientation = %u\n",
5751 key
->opt
.cs_need_correct_orientation
);
5752 fprintf(f
, " opt.cs_cull_front = %u\n",
5753 key
->opt
.cs_cull_front
);
5754 fprintf(f
, " opt.cs_cull_back = %u\n",
5755 key
->opt
.cs_cull_back
);
5756 fprintf(f
, " opt.cs_cull_z = %u\n",
5757 key
->opt
.cs_cull_z
);
5758 fprintf(f
, " opt.cs_halfz_clip_space = %u\n",
5759 key
->opt
.cs_halfz_clip_space
);
5762 case PIPE_SHADER_TESS_CTRL
:
5763 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
) {
5764 si_dump_shader_key_vs(key
, &key
->part
.tcs
.ls_prolog
,
5765 "part.tcs.ls_prolog", f
);
5767 fprintf(f
, " part.tcs.epilog.prim_mode = %u\n", key
->part
.tcs
.epilog
.prim_mode
);
5768 fprintf(f
, " mono.u.ff_tcs_inputs_to_copy = 0x%"PRIx64
"\n", key
->mono
.u
.ff_tcs_inputs_to_copy
);
5771 case PIPE_SHADER_TESS_EVAL
:
5772 fprintf(f
, " as_es = %u\n", key
->as_es
);
5773 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5774 key
->mono
.u
.vs_export_prim_id
);
5777 case PIPE_SHADER_GEOMETRY
:
5778 if (shader
->is_gs_copy_shader
)
5781 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
&&
5782 key
->part
.gs
.es
->type
== PIPE_SHADER_VERTEX
) {
5783 si_dump_shader_key_vs(key
, &key
->part
.gs
.vs_prolog
,
5784 "part.gs.vs_prolog", f
);
5786 fprintf(f
, " part.gs.prolog.tri_strip_adj_fix = %u\n", key
->part
.gs
.prolog
.tri_strip_adj_fix
);
5789 case PIPE_SHADER_COMPUTE
:
5792 case PIPE_SHADER_FRAGMENT
:
5793 fprintf(f
, " part.ps.prolog.color_two_side = %u\n", key
->part
.ps
.prolog
.color_two_side
);
5794 fprintf(f
, " part.ps.prolog.flatshade_colors = %u\n", key
->part
.ps
.prolog
.flatshade_colors
);
5795 fprintf(f
, " part.ps.prolog.poly_stipple = %u\n", key
->part
.ps
.prolog
.poly_stipple
);
5796 fprintf(f
, " part.ps.prolog.force_persp_sample_interp = %u\n", key
->part
.ps
.prolog
.force_persp_sample_interp
);
5797 fprintf(f
, " part.ps.prolog.force_linear_sample_interp = %u\n", key
->part
.ps
.prolog
.force_linear_sample_interp
);
5798 fprintf(f
, " part.ps.prolog.force_persp_center_interp = %u\n", key
->part
.ps
.prolog
.force_persp_center_interp
);
5799 fprintf(f
, " part.ps.prolog.force_linear_center_interp = %u\n", key
->part
.ps
.prolog
.force_linear_center_interp
);
5800 fprintf(f
, " part.ps.prolog.bc_optimize_for_persp = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_persp
);
5801 fprintf(f
, " part.ps.prolog.bc_optimize_for_linear = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_linear
);
5802 fprintf(f
, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key
->part
.ps
.epilog
.spi_shader_col_format
);
5803 fprintf(f
, " part.ps.epilog.color_is_int8 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int8
);
5804 fprintf(f
, " part.ps.epilog.color_is_int10 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int10
);
5805 fprintf(f
, " part.ps.epilog.last_cbuf = %u\n", key
->part
.ps
.epilog
.last_cbuf
);
5806 fprintf(f
, " part.ps.epilog.alpha_func = %u\n", key
->part
.ps
.epilog
.alpha_func
);
5807 fprintf(f
, " part.ps.epilog.alpha_to_one = %u\n", key
->part
.ps
.epilog
.alpha_to_one
);
5808 fprintf(f
, " part.ps.epilog.poly_line_smoothing = %u\n", key
->part
.ps
.epilog
.poly_line_smoothing
);
5809 fprintf(f
, " part.ps.epilog.clamp_color = %u\n", key
->part
.ps
.epilog
.clamp_color
);
5816 if ((processor
== PIPE_SHADER_GEOMETRY
||
5817 processor
== PIPE_SHADER_TESS_EVAL
||
5818 processor
== PIPE_SHADER_VERTEX
) &&
5819 !key
->as_es
&& !key
->as_ls
) {
5820 fprintf(f
, " opt.kill_outputs = 0x%"PRIx64
"\n", key
->opt
.kill_outputs
);
5821 fprintf(f
, " opt.clip_disable = %u\n", key
->opt
.clip_disable
);
5825 static void si_init_shader_ctx(struct si_shader_context
*ctx
,
5826 struct si_screen
*sscreen
,
5827 struct ac_llvm_compiler
*compiler
)
5829 struct lp_build_tgsi_context
*bld_base
;
5831 si_llvm_context_init(ctx
, sscreen
, compiler
);
5833 bld_base
= &ctx
->bld_base
;
5834 bld_base
->emit_fetch_funcs
[TGSI_FILE_CONSTANT
] = fetch_constant
;
5836 bld_base
->op_actions
[TGSI_OPCODE_INTERP_CENTROID
].emit
= build_interp_intrinsic
;
5837 bld_base
->op_actions
[TGSI_OPCODE_INTERP_SAMPLE
].emit
= build_interp_intrinsic
;
5838 bld_base
->op_actions
[TGSI_OPCODE_INTERP_OFFSET
].emit
= build_interp_intrinsic
;
5840 bld_base
->op_actions
[TGSI_OPCODE_MEMBAR
].emit
= membar_emit
;
5842 bld_base
->op_actions
[TGSI_OPCODE_CLOCK
].emit
= clock_emit
;
5844 bld_base
->op_actions
[TGSI_OPCODE_DDX
].emit
= si_llvm_emit_ddxy
;
5845 bld_base
->op_actions
[TGSI_OPCODE_DDY
].emit
= si_llvm_emit_ddxy
;
5846 bld_base
->op_actions
[TGSI_OPCODE_DDX_FINE
].emit
= si_llvm_emit_ddxy
;
5847 bld_base
->op_actions
[TGSI_OPCODE_DDY_FINE
].emit
= si_llvm_emit_ddxy
;
5849 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ALL
].emit
= vote_all_emit
;
5850 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ANY
].emit
= vote_any_emit
;
5851 bld_base
->op_actions
[TGSI_OPCODE_VOTE_EQ
].emit
= vote_eq_emit
;
5852 bld_base
->op_actions
[TGSI_OPCODE_BALLOT
].emit
= ballot_emit
;
5853 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].intr_name
= "llvm.amdgcn.readfirstlane";
5854 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].emit
= read_lane_emit
;
5855 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].intr_name
= "llvm.amdgcn.readlane";
5856 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].emit
= read_lane_emit
;
5858 bld_base
->op_actions
[TGSI_OPCODE_EMIT
].emit
= si_tgsi_emit_vertex
;
5859 bld_base
->op_actions
[TGSI_OPCODE_ENDPRIM
].emit
= si_tgsi_emit_primitive
;
5860 bld_base
->op_actions
[TGSI_OPCODE_BARRIER
].emit
= si_llvm_emit_barrier
;
5863 static void si_optimize_vs_outputs(struct si_shader_context
*ctx
)
5865 struct si_shader
*shader
= ctx
->shader
;
5866 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
5868 if ((ctx
->type
!= PIPE_SHADER_VERTEX
&&
5869 ctx
->type
!= PIPE_SHADER_TESS_EVAL
) ||
5870 shader
->key
.as_ls
||
5874 ac_optimize_vs_outputs(&ctx
->ac
,
5876 shader
->info
.vs_output_param_offset
,
5878 &shader
->info
.nr_param_exports
);
5881 static void si_init_exec_from_input(struct si_shader_context
*ctx
,
5882 unsigned param
, unsigned bitoffset
)
5884 LLVMValueRef args
[] = {
5885 LLVMGetParam(ctx
->main_fn
, param
),
5886 LLVMConstInt(ctx
->i32
, bitoffset
, 0),
5888 ac_build_intrinsic(&ctx
->ac
,
5889 "llvm.amdgcn.init.exec.from.input",
5890 ctx
->voidt
, args
, 2, AC_FUNC_ATTR_CONVERGENT
);
5893 static bool si_vs_needs_prolog(const struct si_shader_selector
*sel
,
5894 const struct si_vs_prolog_bits
*key
)
5896 /* VGPR initialization fixup for Vega10 and Raven is always done in the
5898 return sel
->vs_needs_prolog
|| key
->ls_vgpr_fix
;
5901 static bool si_compile_tgsi_main(struct si_shader_context
*ctx
)
5903 struct si_shader
*shader
= ctx
->shader
;
5904 struct si_shader_selector
*sel
= shader
->selector
;
5905 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
5907 // TODO clean all this up!
5908 switch (ctx
->type
) {
5909 case PIPE_SHADER_VERTEX
:
5910 ctx
->load_input
= declare_input_vs
;
5911 if (shader
->key
.as_ls
)
5912 ctx
->abi
.emit_outputs
= si_llvm_emit_ls_epilogue
;
5913 else if (shader
->key
.as_es
)
5914 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
5915 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
5916 ctx
->abi
.emit_outputs
= si_llvm_emit_prim_discard_cs_epilogue
;
5918 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
5919 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5920 ctx
->abi
.load_base_vertex
= get_base_vertex
;
5922 case PIPE_SHADER_TESS_CTRL
:
5923 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tcs
;
5924 ctx
->abi
.load_tess_varyings
= si_nir_load_tcs_varyings
;
5925 bld_base
->emit_fetch_funcs
[TGSI_FILE_OUTPUT
] = fetch_output_tcs
;
5926 bld_base
->emit_store
= store_output_tcs
;
5927 ctx
->abi
.store_tcs_outputs
= si_nir_store_output_tcs
;
5928 ctx
->abi
.emit_outputs
= si_llvm_emit_tcs_epilogue
;
5929 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
5930 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5932 case PIPE_SHADER_TESS_EVAL
:
5933 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tes
;
5934 ctx
->abi
.load_tess_varyings
= si_nir_load_input_tes
;
5935 ctx
->abi
.load_tess_coord
= si_load_tess_coord
;
5936 ctx
->abi
.load_tess_level
= si_load_tess_level
;
5937 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
5938 if (shader
->key
.as_es
)
5939 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
5941 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
5942 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5944 case PIPE_SHADER_GEOMETRY
:
5945 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_gs
;
5946 ctx
->abi
.load_inputs
= si_nir_load_input_gs
;
5947 ctx
->abi
.emit_vertex
= si_llvm_emit_vertex
;
5948 ctx
->abi
.emit_primitive
= si_llvm_emit_primitive
;
5949 ctx
->abi
.emit_outputs
= si_llvm_emit_gs_epilogue
;
5950 bld_base
->emit_epilogue
= si_tgsi_emit_gs_epilogue
;
5952 case PIPE_SHADER_FRAGMENT
:
5953 ctx
->load_input
= declare_input_fs
;
5954 ctx
->abi
.emit_outputs
= si_llvm_return_fs_outputs
;
5955 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5956 ctx
->abi
.lookup_interp_param
= si_nir_lookup_interp_param
;
5957 ctx
->abi
.load_sample_position
= load_sample_position
;
5958 ctx
->abi
.load_sample_mask_in
= load_sample_mask_in
;
5959 ctx
->abi
.emit_kill
= si_llvm_emit_kill
;
5961 case PIPE_SHADER_COMPUTE
:
5962 ctx
->abi
.load_local_group_size
= get_block_size
;
5965 assert(!"Unsupported shader type");
5969 ctx
->abi
.load_ubo
= load_ubo
;
5970 ctx
->abi
.load_ssbo
= load_ssbo
;
5972 create_function(ctx
);
5973 preload_ring_buffers(ctx
);
5975 /* For GFX9 merged shaders:
5976 * - Set EXEC for the first shader. If the prolog is present, set
5977 * EXEC there instead.
5978 * - Add a barrier before the second shader.
5979 * - In the second shader, reset EXEC to ~0 and wrap the main part in
5980 * an if-statement. This is required for correctness in geometry
5981 * shaders, to ensure that empty GS waves do not send GS_EMIT and
5984 * For monolithic merged shaders, the first shader is wrapped in an
5985 * if-block together with its prolog in si_build_wrapper_function.
5987 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
5988 if (!shader
->is_monolithic
&&
5989 sel
->info
.num_instructions
> 1 && /* not empty shader */
5990 (shader
->key
.as_es
|| shader
->key
.as_ls
) &&
5991 (ctx
->type
== PIPE_SHADER_TESS_EVAL
||
5992 (ctx
->type
== PIPE_SHADER_VERTEX
&&
5993 !si_vs_needs_prolog(sel
, &shader
->key
.part
.vs
.prolog
)))) {
5994 si_init_exec_from_input(ctx
,
5995 ctx
->param_merged_wave_info
, 0);
5996 } else if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
5997 ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5998 if (!shader
->is_monolithic
)
5999 ac_init_exec_full_mask(&ctx
->ac
);
6001 LLVMValueRef num_threads
= si_unpack_param(ctx
, ctx
->param_merged_wave_info
, 8, 8);
6003 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
6004 ac_get_thread_id(&ctx
->ac
), num_threads
, "");
6005 lp_build_if(&ctx
->merged_wrap_if_state
, &ctx
->gallivm
, ena
);
6007 /* The barrier must execute for all shaders in a
6010 * Execute the barrier inside the conditional block,
6011 * so that empty waves can jump directly to s_endpgm,
6012 * which will also signal the barrier.
6014 * If the shader is TCS and the TCS epilog is present
6015 * and contains a barrier, it will wait there and then
6018 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
6022 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&&
6023 sel
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
6024 for (unsigned i
= 0; i
< 6; i
++) {
6025 ctx
->invoc0_tess_factors
[i
] =
6026 ac_build_alloca_undef(&ctx
->ac
, ctx
->i32
, "");
6030 if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
6032 for (i
= 0; i
< 4; i
++) {
6033 ctx
->gs_next_vertex
[i
] =
6034 ac_build_alloca(&ctx
->ac
, ctx
->i32
, "");
6038 if (sel
->force_correct_derivs_after_kill
) {
6039 ctx
->postponed_kill
= ac_build_alloca_undef(&ctx
->ac
, ctx
->i1
, "");
6040 /* true = don't kill. */
6041 LLVMBuildStore(ctx
->ac
.builder
, ctx
->i1true
,
6042 ctx
->postponed_kill
);
6046 if (!lp_build_tgsi_llvm(bld_base
, sel
->tokens
)) {
6047 fprintf(stderr
, "Failed to translate shader from TGSI to LLVM\n");
6051 if (!si_nir_build_llvm(ctx
, sel
->nir
)) {
6052 fprintf(stderr
, "Failed to translate shader from NIR to LLVM\n");
6057 si_llvm_build_ret(ctx
, ctx
->return_value
);
6062 * Compute the VS prolog key, which contains all the information needed to
6063 * build the VS prolog function, and set shader->info bits where needed.
6065 * \param info Shader info of the vertex shader.
6066 * \param num_input_sgprs Number of input SGPRs for the vertex shader.
6067 * \param prolog_key Key of the VS prolog
6068 * \param shader_out The vertex shader, or the next shader if merging LS+HS or ES+GS.
6069 * \param key Output shader part key.
6071 static void si_get_vs_prolog_key(const struct tgsi_shader_info
*info
,
6072 unsigned num_input_sgprs
,
6073 const struct si_vs_prolog_bits
*prolog_key
,
6074 struct si_shader
*shader_out
,
6075 union si_shader_part_key
*key
)
6077 memset(key
, 0, sizeof(*key
));
6078 key
->vs_prolog
.states
= *prolog_key
;
6079 key
->vs_prolog
.num_input_sgprs
= num_input_sgprs
;
6080 key
->vs_prolog
.last_input
= MAX2(1, info
->num_inputs
) - 1;
6081 key
->vs_prolog
.as_ls
= shader_out
->key
.as_ls
;
6082 key
->vs_prolog
.as_es
= shader_out
->key
.as_es
;
6084 if (shader_out
->selector
->type
== PIPE_SHADER_TESS_CTRL
) {
6085 key
->vs_prolog
.as_ls
= 1;
6086 key
->vs_prolog
.num_merged_next_stage_vgprs
= 2;
6087 } else if (shader_out
->selector
->type
== PIPE_SHADER_GEOMETRY
) {
6088 key
->vs_prolog
.as_es
= 1;
6089 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
6092 /* Enable loading the InstanceID VGPR. */
6093 uint16_t input_mask
= u_bit_consecutive(0, info
->num_inputs
);
6095 if ((key
->vs_prolog
.states
.instance_divisor_is_one
|
6096 key
->vs_prolog
.states
.instance_divisor_is_fetched
) & input_mask
)
6097 shader_out
->info
.uses_instanceid
= true;
6101 * Compute the PS prolog key, which contains all the information needed to
6102 * build the PS prolog function, and set related bits in shader->config.
6104 static void si_get_ps_prolog_key(struct si_shader
*shader
,
6105 union si_shader_part_key
*key
,
6106 bool separate_prolog
)
6108 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6110 memset(key
, 0, sizeof(*key
));
6111 key
->ps_prolog
.states
= shader
->key
.part
.ps
.prolog
;
6112 key
->ps_prolog
.colors_read
= info
->colors_read
;
6113 key
->ps_prolog
.num_input_sgprs
= shader
->info
.num_input_sgprs
;
6114 key
->ps_prolog
.num_input_vgprs
= shader
->info
.num_input_vgprs
;
6115 key
->ps_prolog
.wqm
= info
->uses_derivatives
&&
6116 (key
->ps_prolog
.colors_read
||
6117 key
->ps_prolog
.states
.force_persp_sample_interp
||
6118 key
->ps_prolog
.states
.force_linear_sample_interp
||
6119 key
->ps_prolog
.states
.force_persp_center_interp
||
6120 key
->ps_prolog
.states
.force_linear_center_interp
||
6121 key
->ps_prolog
.states
.bc_optimize_for_persp
||
6122 key
->ps_prolog
.states
.bc_optimize_for_linear
);
6123 key
->ps_prolog
.ancillary_vgpr_index
= shader
->info
.ancillary_vgpr_index
;
6125 if (info
->colors_read
) {
6126 unsigned *color
= shader
->selector
->color_attr_index
;
6128 if (shader
->key
.part
.ps
.prolog
.color_two_side
) {
6129 /* BCOLORs are stored after the last input. */
6130 key
->ps_prolog
.num_interp_inputs
= info
->num_inputs
;
6131 key
->ps_prolog
.face_vgpr_index
= shader
->info
.face_vgpr_index
;
6132 if (separate_prolog
)
6133 shader
->config
.spi_ps_input_ena
|= S_0286CC_FRONT_FACE_ENA(1);
6136 for (unsigned i
= 0; i
< 2; i
++) {
6137 unsigned interp
= info
->input_interpolate
[color
[i
]];
6138 unsigned location
= info
->input_interpolate_loc
[color
[i
]];
6140 if (!(info
->colors_read
& (0xf << i
*4)))
6143 key
->ps_prolog
.color_attr_index
[i
] = color
[i
];
6145 if (shader
->key
.part
.ps
.prolog
.flatshade_colors
&&
6146 interp
== TGSI_INTERPOLATE_COLOR
)
6147 interp
= TGSI_INTERPOLATE_CONSTANT
;
6150 case TGSI_INTERPOLATE_CONSTANT
:
6151 key
->ps_prolog
.color_interp_vgpr_index
[i
] = -1;
6153 case TGSI_INTERPOLATE_PERSPECTIVE
:
6154 case TGSI_INTERPOLATE_COLOR
:
6155 /* Force the interpolation location for colors here. */
6156 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
)
6157 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
6158 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
)
6159 location
= TGSI_INTERPOLATE_LOC_CENTER
;
6162 case TGSI_INTERPOLATE_LOC_SAMPLE
:
6163 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 0;
6164 if (separate_prolog
) {
6165 shader
->config
.spi_ps_input_ena
|=
6166 S_0286CC_PERSP_SAMPLE_ENA(1);
6169 case TGSI_INTERPOLATE_LOC_CENTER
:
6170 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 2;
6171 if (separate_prolog
) {
6172 shader
->config
.spi_ps_input_ena
|=
6173 S_0286CC_PERSP_CENTER_ENA(1);
6176 case TGSI_INTERPOLATE_LOC_CENTROID
:
6177 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 4;
6178 if (separate_prolog
) {
6179 shader
->config
.spi_ps_input_ena
|=
6180 S_0286CC_PERSP_CENTROID_ENA(1);
6187 case TGSI_INTERPOLATE_LINEAR
:
6188 /* Force the interpolation location for colors here. */
6189 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
)
6190 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
6191 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
)
6192 location
= TGSI_INTERPOLATE_LOC_CENTER
;
6194 /* The VGPR assignment for non-monolithic shaders
6195 * works because InitialPSInputAddr is set on the
6196 * main shader and PERSP_PULL_MODEL is never used.
6199 case TGSI_INTERPOLATE_LOC_SAMPLE
:
6200 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6201 separate_prolog
? 6 : 9;
6202 if (separate_prolog
) {
6203 shader
->config
.spi_ps_input_ena
|=
6204 S_0286CC_LINEAR_SAMPLE_ENA(1);
6207 case TGSI_INTERPOLATE_LOC_CENTER
:
6208 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6209 separate_prolog
? 8 : 11;
6210 if (separate_prolog
) {
6211 shader
->config
.spi_ps_input_ena
|=
6212 S_0286CC_LINEAR_CENTER_ENA(1);
6215 case TGSI_INTERPOLATE_LOC_CENTROID
:
6216 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6217 separate_prolog
? 10 : 13;
6218 if (separate_prolog
) {
6219 shader
->config
.spi_ps_input_ena
|=
6220 S_0286CC_LINEAR_CENTROID_ENA(1);
6235 * Check whether a PS prolog is required based on the key.
6237 static bool si_need_ps_prolog(const union si_shader_part_key
*key
)
6239 return key
->ps_prolog
.colors_read
||
6240 key
->ps_prolog
.states
.force_persp_sample_interp
||
6241 key
->ps_prolog
.states
.force_linear_sample_interp
||
6242 key
->ps_prolog
.states
.force_persp_center_interp
||
6243 key
->ps_prolog
.states
.force_linear_center_interp
||
6244 key
->ps_prolog
.states
.bc_optimize_for_persp
||
6245 key
->ps_prolog
.states
.bc_optimize_for_linear
||
6246 key
->ps_prolog
.states
.poly_stipple
||
6247 key
->ps_prolog
.states
.samplemask_log_ps_iter
;
6251 * Compute the PS epilog key, which contains all the information needed to
6252 * build the PS epilog function.
6254 static void si_get_ps_epilog_key(struct si_shader
*shader
,
6255 union si_shader_part_key
*key
)
6257 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6258 memset(key
, 0, sizeof(*key
));
6259 key
->ps_epilog
.colors_written
= info
->colors_written
;
6260 key
->ps_epilog
.writes_z
= info
->writes_z
;
6261 key
->ps_epilog
.writes_stencil
= info
->writes_stencil
;
6262 key
->ps_epilog
.writes_samplemask
= info
->writes_samplemask
;
6263 key
->ps_epilog
.states
= shader
->key
.part
.ps
.epilog
;
6267 * Build the GS prolog function. Rotate the input vertices for triangle strips
6270 static void si_build_gs_prolog_function(struct si_shader_context
*ctx
,
6271 union si_shader_part_key
*key
)
6273 unsigned num_sgprs
, num_vgprs
;
6274 struct si_function_info fninfo
;
6275 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6276 LLVMTypeRef returns
[48];
6277 LLVMValueRef func
, ret
;
6279 si_init_function_info(&fninfo
);
6281 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6282 if (key
->gs_prolog
.states
.gfx9_prev_is_vs
)
6283 num_sgprs
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
6285 num_sgprs
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
6286 num_vgprs
= 5; /* ES inputs are not needed by GS */
6288 num_sgprs
= GFX6_GS_NUM_USER_SGPR
+ 2;
6292 for (unsigned i
= 0; i
< num_sgprs
; ++i
) {
6293 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
6294 returns
[i
] = ctx
->i32
;
6297 for (unsigned i
= 0; i
< num_vgprs
; ++i
) {
6298 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
6299 returns
[num_sgprs
+ i
] = ctx
->f32
;
6302 /* Create the function. */
6303 si_create_function(ctx
, "gs_prolog", returns
, num_sgprs
+ num_vgprs
,
6305 func
= ctx
->main_fn
;
6307 /* Set the full EXEC mask for the prolog, because we are only fiddling
6308 * with registers here. The main shader part will set the correct EXEC
6311 if (ctx
->screen
->info
.chip_class
>= GFX9
&& !key
->gs_prolog
.is_monolithic
)
6312 ac_init_exec_full_mask(&ctx
->ac
);
6314 /* Copy inputs to outputs. This should be no-op, as the registers match,
6315 * but it will prevent the compiler from overwriting them unintentionally.
6317 ret
= ctx
->return_value
;
6318 for (unsigned i
= 0; i
< num_sgprs
; i
++) {
6319 LLVMValueRef p
= LLVMGetParam(func
, i
);
6320 ret
= LLVMBuildInsertValue(builder
, ret
, p
, i
, "");
6322 for (unsigned i
= 0; i
< num_vgprs
; i
++) {
6323 LLVMValueRef p
= LLVMGetParam(func
, num_sgprs
+ i
);
6324 p
= ac_to_float(&ctx
->ac
, p
);
6325 ret
= LLVMBuildInsertValue(builder
, ret
, p
, num_sgprs
+ i
, "");
6328 if (key
->gs_prolog
.states
.tri_strip_adj_fix
) {
6329 /* Remap the input vertices for every other primitive. */
6330 const unsigned gfx6_vtx_params
[6] = {
6338 const unsigned gfx9_vtx_params
[3] = {
6343 LLVMValueRef vtx_in
[6], vtx_out
[6];
6344 LLVMValueRef prim_id
, rotate
;
6346 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6347 for (unsigned i
= 0; i
< 3; i
++) {
6348 vtx_in
[i
*2] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 0, 16);
6349 vtx_in
[i
*2+1] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 16, 16);
6352 for (unsigned i
= 0; i
< 6; i
++)
6353 vtx_in
[i
] = LLVMGetParam(func
, gfx6_vtx_params
[i
]);
6356 prim_id
= LLVMGetParam(func
, num_sgprs
+ 2);
6357 rotate
= LLVMBuildTrunc(builder
, prim_id
, ctx
->i1
, "");
6359 for (unsigned i
= 0; i
< 6; ++i
) {
6360 LLVMValueRef base
, rotated
;
6362 rotated
= vtx_in
[(i
+ 4) % 6];
6363 vtx_out
[i
] = LLVMBuildSelect(builder
, rotate
, rotated
, base
, "");
6366 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6367 for (unsigned i
= 0; i
< 3; i
++) {
6368 LLVMValueRef hi
, out
;
6370 hi
= LLVMBuildShl(builder
, vtx_out
[i
*2+1],
6371 LLVMConstInt(ctx
->i32
, 16, 0), "");
6372 out
= LLVMBuildOr(builder
, vtx_out
[i
*2], hi
, "");
6373 out
= ac_to_float(&ctx
->ac
, out
);
6374 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6375 gfx9_vtx_params
[i
], "");
6378 for (unsigned i
= 0; i
< 6; i
++) {
6381 out
= ac_to_float(&ctx
->ac
, vtx_out
[i
]);
6382 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6383 gfx6_vtx_params
[i
], "");
6388 LLVMBuildRet(builder
, ret
);
6392 * Given a list of shader part functions, build a wrapper function that
6393 * runs them in sequence to form a monolithic shader.
6395 static void si_build_wrapper_function(struct si_shader_context
*ctx
,
6396 LLVMValueRef
*parts
,
6399 unsigned next_shader_first_part
)
6401 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6402 /* PS epilog has one arg per color component; gfx9 merged shader
6403 * prologs need to forward 32 user SGPRs.
6405 struct si_function_info fninfo
;
6406 LLVMValueRef initial
[64], out
[64];
6407 LLVMTypeRef function_type
;
6408 unsigned num_first_params
;
6409 unsigned num_out
, initial_num_out
;
6410 MAYBE_UNUSED
unsigned num_out_sgpr
; /* used in debug checks */
6411 MAYBE_UNUSED
unsigned initial_num_out_sgpr
; /* used in debug checks */
6412 unsigned num_sgprs
, num_vgprs
;
6414 struct lp_build_if_state if_state
;
6416 si_init_function_info(&fninfo
);
6418 for (unsigned i
= 0; i
< num_parts
; ++i
) {
6419 ac_add_function_attr(ctx
->ac
.context
, parts
[i
], -1,
6420 AC_FUNC_ATTR_ALWAYSINLINE
);
6421 LLVMSetLinkage(parts
[i
], LLVMPrivateLinkage
);
6424 /* The parameters of the wrapper function correspond to those of the
6425 * first part in terms of SGPRs and VGPRs, but we use the types of the
6426 * main part to get the right types. This is relevant for the
6427 * dereferenceable attribute on descriptor table pointers.
6432 function_type
= LLVMGetElementType(LLVMTypeOf(parts
[0]));
6433 num_first_params
= LLVMCountParamTypes(function_type
);
6435 for (unsigned i
= 0; i
< num_first_params
; ++i
) {
6436 LLVMValueRef param
= LLVMGetParam(parts
[0], i
);
6438 if (ac_is_sgpr_param(param
)) {
6439 assert(num_vgprs
== 0);
6440 num_sgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6442 num_vgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6447 while (gprs
< num_sgprs
+ num_vgprs
) {
6448 LLVMValueRef param
= LLVMGetParam(parts
[main_part
], fninfo
.num_params
);
6449 LLVMTypeRef type
= LLVMTypeOf(param
);
6450 unsigned size
= ac_get_type_size(type
) / 4;
6452 add_arg(&fninfo
, gprs
< num_sgprs
? ARG_SGPR
: ARG_VGPR
, type
);
6454 assert(ac_is_sgpr_param(param
) == (gprs
< num_sgprs
));
6455 assert(gprs
+ size
<= num_sgprs
+ num_vgprs
&&
6456 (gprs
>= num_sgprs
|| gprs
+ size
<= num_sgprs
));
6461 /* Prepare the return type. */
6462 unsigned num_returns
= 0;
6463 LLVMTypeRef returns
[32], last_func_type
, return_type
;
6465 last_func_type
= LLVMGetElementType(LLVMTypeOf(parts
[num_parts
- 1]));
6466 return_type
= LLVMGetReturnType(last_func_type
);
6468 switch (LLVMGetTypeKind(return_type
)) {
6469 case LLVMStructTypeKind
:
6470 num_returns
= LLVMCountStructElementTypes(return_type
);
6471 assert(num_returns
<= ARRAY_SIZE(returns
));
6472 LLVMGetStructElementTypes(return_type
, returns
);
6474 case LLVMVoidTypeKind
:
6477 unreachable("unexpected type");
6480 si_create_function(ctx
, "wrapper", returns
, num_returns
, &fninfo
,
6481 si_get_max_workgroup_size(ctx
->shader
));
6483 if (is_merged_shader(ctx
))
6484 ac_init_exec_full_mask(&ctx
->ac
);
6486 /* Record the arguments of the function as if they were an output of
6492 for (unsigned i
= 0; i
< fninfo
.num_params
; ++i
) {
6493 LLVMValueRef param
= LLVMGetParam(ctx
->main_fn
, i
);
6494 LLVMTypeRef param_type
= LLVMTypeOf(param
);
6495 LLVMTypeRef out_type
= i
< fninfo
.num_sgpr_params
? ctx
->i32
: ctx
->f32
;
6496 unsigned size
= ac_get_type_size(param_type
) / 4;
6499 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6500 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i32
, "");
6501 param_type
= ctx
->i32
;
6504 if (param_type
!= out_type
)
6505 param
= LLVMBuildBitCast(builder
, param
, out_type
, "");
6506 out
[num_out
++] = param
;
6508 LLVMTypeRef vector_type
= LLVMVectorType(out_type
, size
);
6510 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6511 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i64
, "");
6512 param_type
= ctx
->i64
;
6515 if (param_type
!= vector_type
)
6516 param
= LLVMBuildBitCast(builder
, param
, vector_type
, "");
6518 for (unsigned j
= 0; j
< size
; ++j
)
6519 out
[num_out
++] = LLVMBuildExtractElement(
6520 builder
, param
, LLVMConstInt(ctx
->i32
, j
, 0), "");
6523 if (i
< fninfo
.num_sgpr_params
)
6524 num_out_sgpr
= num_out
;
6527 memcpy(initial
, out
, sizeof(out
));
6528 initial_num_out
= num_out
;
6529 initial_num_out_sgpr
= num_out_sgpr
;
6531 /* Now chain the parts. */
6533 for (unsigned part
= 0; part
< num_parts
; ++part
) {
6534 LLVMValueRef in
[48];
6535 LLVMTypeRef ret_type
;
6536 unsigned out_idx
= 0;
6537 unsigned num_params
= LLVMCountParams(parts
[part
]);
6539 /* Merged shaders are executed conditionally depending
6540 * on the number of enabled threads passed in the input SGPRs. */
6541 if (is_merged_shader(ctx
) && part
== 0) {
6542 LLVMValueRef ena
, count
= initial
[3];
6544 count
= LLVMBuildAnd(builder
, count
,
6545 LLVMConstInt(ctx
->i32
, 0x7f, 0), "");
6546 ena
= LLVMBuildICmp(builder
, LLVMIntULT
,
6547 ac_get_thread_id(&ctx
->ac
), count
, "");
6548 lp_build_if(&if_state
, &ctx
->gallivm
, ena
);
6551 /* Derive arguments for the next part from outputs of the
6554 for (unsigned param_idx
= 0; param_idx
< num_params
; ++param_idx
) {
6556 LLVMTypeRef param_type
;
6558 unsigned param_size
;
6559 LLVMValueRef arg
= NULL
;
6561 param
= LLVMGetParam(parts
[part
], param_idx
);
6562 param_type
= LLVMTypeOf(param
);
6563 param_size
= ac_get_type_size(param_type
) / 4;
6564 is_sgpr
= ac_is_sgpr_param(param
);
6567 ac_add_function_attr(ctx
->ac
.context
, parts
[part
],
6568 param_idx
+ 1, AC_FUNC_ATTR_INREG
);
6569 } else if (out_idx
< num_out_sgpr
) {
6570 /* Skip returned SGPRs the current part doesn't
6571 * declare on the input. */
6572 out_idx
= num_out_sgpr
;
6575 assert(out_idx
+ param_size
<= (is_sgpr
? num_out_sgpr
: num_out
));
6577 if (param_size
== 1)
6580 arg
= ac_build_gather_values(&ctx
->ac
, &out
[out_idx
], param_size
);
6582 if (LLVMTypeOf(arg
) != param_type
) {
6583 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6584 if (LLVMGetPointerAddressSpace(param_type
) ==
6585 AC_ADDR_SPACE_CONST_32BIT
) {
6586 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i32
, "");
6587 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
6589 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i64
, "");
6590 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
6593 arg
= LLVMBuildBitCast(builder
, arg
, param_type
, "");
6597 in
[param_idx
] = arg
;
6598 out_idx
+= param_size
;
6601 ret
= ac_build_call(&ctx
->ac
, parts
[part
], in
, num_params
);
6603 if (is_merged_shader(ctx
) &&
6604 part
+ 1 == next_shader_first_part
) {
6605 lp_build_endif(&if_state
);
6607 /* The second half of the merged shader should use
6608 * the inputs from the toplevel (wrapper) function,
6609 * not the return value from the last call.
6611 * That's because the last call was executed condi-
6612 * tionally, so we can't consume it in the main
6615 memcpy(out
, initial
, sizeof(initial
));
6616 num_out
= initial_num_out
;
6617 num_out_sgpr
= initial_num_out_sgpr
;
6621 /* Extract the returned GPRs. */
6622 ret_type
= LLVMTypeOf(ret
);
6626 if (LLVMGetTypeKind(ret_type
) != LLVMVoidTypeKind
) {
6627 assert(LLVMGetTypeKind(ret_type
) == LLVMStructTypeKind
);
6629 unsigned ret_size
= LLVMCountStructElementTypes(ret_type
);
6631 for (unsigned i
= 0; i
< ret_size
; ++i
) {
6633 LLVMBuildExtractValue(builder
, ret
, i
, "");
6635 assert(num_out
< ARRAY_SIZE(out
));
6636 out
[num_out
++] = val
;
6638 if (LLVMTypeOf(val
) == ctx
->i32
) {
6639 assert(num_out_sgpr
+ 1 == num_out
);
6640 num_out_sgpr
= num_out
;
6646 /* Return the value from the last part. */
6647 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
6648 LLVMBuildRetVoid(builder
);
6650 LLVMBuildRet(builder
, ret
);
6653 static bool si_should_optimize_less(struct ac_llvm_compiler
*compiler
,
6654 struct si_shader_selector
*sel
)
6656 if (!compiler
->low_opt_passes
)
6659 /* Assume a slow CPU. */
6660 assert(!sel
->screen
->info
.has_dedicated_vram
&&
6661 sel
->screen
->info
.chip_class
<= GFX8
);
6663 /* For a crazy dEQP test containing 2597 memory opcodes, mostly
6665 return sel
->type
== PIPE_SHADER_COMPUTE
&&
6666 sel
->info
.num_memory_instructions
> 1000;
6669 int si_compile_tgsi_shader(struct si_screen
*sscreen
,
6670 struct ac_llvm_compiler
*compiler
,
6671 struct si_shader
*shader
,
6672 struct pipe_debug_callback
*debug
)
6674 struct si_shader_selector
*sel
= shader
->selector
;
6675 struct si_shader_context ctx
;
6678 /* Dump TGSI code before doing TGSI->LLVM conversion in case the
6679 * conversion fails. */
6680 if (si_can_dump_shader(sscreen
, sel
->info
.processor
) &&
6681 !(sscreen
->debug_flags
& DBG(NO_TGSI
))) {
6683 tgsi_dump(sel
->tokens
, 0);
6685 nir_print_shader(sel
->nir
, stderr
);
6686 si_dump_streamout(&sel
->so
);
6689 si_init_shader_ctx(&ctx
, sscreen
, compiler
);
6690 si_llvm_context_set_tgsi(&ctx
, shader
);
6692 memset(shader
->info
.vs_output_param_offset
, AC_EXP_PARAM_UNDEFINED
,
6693 sizeof(shader
->info
.vs_output_param_offset
));
6695 shader
->info
.uses_instanceid
= sel
->info
.uses_instanceid
;
6697 if (!si_compile_tgsi_main(&ctx
)) {
6698 si_llvm_dispose(&ctx
);
6702 if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_VERTEX
) {
6703 LLVMValueRef parts
[2];
6704 bool need_prolog
= sel
->vs_needs_prolog
;
6706 parts
[1] = ctx
.main_fn
;
6709 union si_shader_part_key prolog_key
;
6710 si_get_vs_prolog_key(&sel
->info
,
6711 shader
->info
.num_input_sgprs
,
6712 &shader
->key
.part
.vs
.prolog
,
6713 shader
, &prolog_key
);
6714 si_build_vs_prolog_function(&ctx
, &prolog_key
);
6715 parts
[0] = ctx
.main_fn
;
6718 si_build_wrapper_function(&ctx
, parts
+ !need_prolog
,
6719 1 + need_prolog
, need_prolog
, 0);
6721 if (ctx
.shader
->key
.opt
.vs_as_prim_discard_cs
)
6722 si_build_prim_discard_compute_shader(&ctx
);
6723 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_TESS_CTRL
) {
6724 if (sscreen
->info
.chip_class
>= GFX9
) {
6725 struct si_shader_selector
*ls
= shader
->key
.part
.tcs
.ls
;
6726 LLVMValueRef parts
[4];
6727 bool vs_needs_prolog
=
6728 si_vs_needs_prolog(ls
, &shader
->key
.part
.tcs
.ls_prolog
);
6731 parts
[2] = ctx
.main_fn
;
6734 union si_shader_part_key tcs_epilog_key
;
6735 memset(&tcs_epilog_key
, 0, sizeof(tcs_epilog_key
));
6736 tcs_epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6737 si_build_tcs_epilog_function(&ctx
, &tcs_epilog_key
);
6738 parts
[3] = ctx
.main_fn
;
6740 /* VS as LS main part */
6741 struct si_shader shader_ls
= {};
6742 shader_ls
.selector
= ls
;
6743 shader_ls
.key
.as_ls
= 1;
6744 shader_ls
.key
.mono
= shader
->key
.mono
;
6745 shader_ls
.key
.opt
= shader
->key
.opt
;
6746 shader_ls
.is_monolithic
= true;
6747 si_llvm_context_set_tgsi(&ctx
, &shader_ls
);
6749 if (!si_compile_tgsi_main(&ctx
)) {
6750 si_llvm_dispose(&ctx
);
6753 shader
->info
.uses_instanceid
|= ls
->info
.uses_instanceid
;
6754 parts
[1] = ctx
.main_fn
;
6757 if (vs_needs_prolog
) {
6758 union si_shader_part_key vs_prolog_key
;
6759 si_get_vs_prolog_key(&ls
->info
,
6760 shader_ls
.info
.num_input_sgprs
,
6761 &shader
->key
.part
.tcs
.ls_prolog
,
6762 shader
, &vs_prolog_key
);
6763 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
6764 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
6765 parts
[0] = ctx
.main_fn
;
6768 /* Reset the shader context. */
6769 ctx
.shader
= shader
;
6770 ctx
.type
= PIPE_SHADER_TESS_CTRL
;
6772 si_build_wrapper_function(&ctx
,
6773 parts
+ !vs_needs_prolog
,
6774 4 - !vs_needs_prolog
, vs_needs_prolog
,
6775 vs_needs_prolog
? 2 : 1);
6777 LLVMValueRef parts
[2];
6778 union si_shader_part_key epilog_key
;
6780 parts
[0] = ctx
.main_fn
;
6782 memset(&epilog_key
, 0, sizeof(epilog_key
));
6783 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6784 si_build_tcs_epilog_function(&ctx
, &epilog_key
);
6785 parts
[1] = ctx
.main_fn
;
6787 si_build_wrapper_function(&ctx
, parts
, 2, 0, 0);
6789 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_GEOMETRY
) {
6790 if (ctx
.screen
->info
.chip_class
>= GFX9
) {
6791 struct si_shader_selector
*es
= shader
->key
.part
.gs
.es
;
6792 LLVMValueRef es_prolog
= NULL
;
6793 LLVMValueRef es_main
= NULL
;
6794 LLVMValueRef gs_prolog
= NULL
;
6795 LLVMValueRef gs_main
= ctx
.main_fn
;
6798 union si_shader_part_key gs_prolog_key
;
6799 memset(&gs_prolog_key
, 0, sizeof(gs_prolog_key
));
6800 gs_prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
6801 gs_prolog_key
.gs_prolog
.is_monolithic
= true;
6802 si_build_gs_prolog_function(&ctx
, &gs_prolog_key
);
6803 gs_prolog
= ctx
.main_fn
;
6806 struct si_shader shader_es
= {};
6807 shader_es
.selector
= es
;
6808 shader_es
.key
.as_es
= 1;
6809 shader_es
.key
.mono
= shader
->key
.mono
;
6810 shader_es
.key
.opt
= shader
->key
.opt
;
6811 shader_es
.is_monolithic
= true;
6812 si_llvm_context_set_tgsi(&ctx
, &shader_es
);
6814 if (!si_compile_tgsi_main(&ctx
)) {
6815 si_llvm_dispose(&ctx
);
6818 shader
->info
.uses_instanceid
|= es
->info
.uses_instanceid
;
6819 es_main
= ctx
.main_fn
;
6822 if (es
->vs_needs_prolog
) {
6823 union si_shader_part_key vs_prolog_key
;
6824 si_get_vs_prolog_key(&es
->info
,
6825 shader_es
.info
.num_input_sgprs
,
6826 &shader
->key
.part
.gs
.vs_prolog
,
6827 shader
, &vs_prolog_key
);
6828 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
6829 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
6830 es_prolog
= ctx
.main_fn
;
6833 /* Reset the shader context. */
6834 ctx
.shader
= shader
;
6835 ctx
.type
= PIPE_SHADER_GEOMETRY
;
6837 /* Prepare the array of shader parts. */
6838 LLVMValueRef parts
[4];
6839 unsigned num_parts
= 0, main_part
, next_first_part
;
6842 parts
[num_parts
++] = es_prolog
;
6844 parts
[main_part
= num_parts
++] = es_main
;
6845 parts
[next_first_part
= num_parts
++] = gs_prolog
;
6846 parts
[num_parts
++] = gs_main
;
6848 si_build_wrapper_function(&ctx
, parts
, num_parts
,
6849 main_part
, next_first_part
);
6851 LLVMValueRef parts
[2];
6852 union si_shader_part_key prolog_key
;
6854 parts
[1] = ctx
.main_fn
;
6856 memset(&prolog_key
, 0, sizeof(prolog_key
));
6857 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
6858 si_build_gs_prolog_function(&ctx
, &prolog_key
);
6859 parts
[0] = ctx
.main_fn
;
6861 si_build_wrapper_function(&ctx
, parts
, 2, 1, 0);
6863 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_FRAGMENT
) {
6864 LLVMValueRef parts
[3];
6865 union si_shader_part_key prolog_key
;
6866 union si_shader_part_key epilog_key
;
6869 si_get_ps_prolog_key(shader
, &prolog_key
, false);
6870 need_prolog
= si_need_ps_prolog(&prolog_key
);
6872 parts
[need_prolog
? 1 : 0] = ctx
.main_fn
;
6875 si_build_ps_prolog_function(&ctx
, &prolog_key
);
6876 parts
[0] = ctx
.main_fn
;
6879 si_get_ps_epilog_key(shader
, &epilog_key
);
6880 si_build_ps_epilog_function(&ctx
, &epilog_key
);
6881 parts
[need_prolog
? 2 : 1] = ctx
.main_fn
;
6883 si_build_wrapper_function(&ctx
, parts
, need_prolog
? 3 : 2,
6884 need_prolog
? 1 : 0, 0);
6887 si_llvm_optimize_module(&ctx
);
6889 /* Post-optimization transformations and analysis. */
6890 si_optimize_vs_outputs(&ctx
);
6892 if ((debug
&& debug
->debug_message
) ||
6893 si_can_dump_shader(sscreen
, ctx
.type
)) {
6894 ctx
.shader
->info
.private_mem_vgprs
=
6895 ac_count_scratch_private_memory(ctx
.main_fn
);
6898 /* Make sure the input is a pointer and not integer followed by inttoptr. */
6899 assert(LLVMGetTypeKind(LLVMTypeOf(LLVMGetParam(ctx
.main_fn
, 0))) ==
6900 LLVMPointerTypeKind
);
6902 /* Compile to bytecode. */
6903 r
= si_compile_llvm(sscreen
, &shader
->binary
, &shader
->config
, compiler
,
6904 ctx
.ac
.module
, debug
, ctx
.type
,
6905 si_get_shader_name(shader
, ctx
.type
),
6906 si_should_optimize_less(compiler
, shader
->selector
));
6907 si_llvm_dispose(&ctx
);
6909 fprintf(stderr
, "LLVM failed to compile shader\n");
6913 /* Validate SGPR and VGPR usage for compute to detect compiler bugs.
6914 * LLVM 3.9svn has this bug.
6916 if (sel
->type
== PIPE_SHADER_COMPUTE
) {
6917 unsigned wave_size
= 64;
6918 unsigned max_vgprs
= 256;
6919 unsigned max_sgprs
= sscreen
->info
.chip_class
>= GFX8
? 800 : 512;
6920 unsigned max_sgprs_per_wave
= 128;
6921 unsigned max_block_threads
= si_get_max_workgroup_size(shader
);
6922 unsigned min_waves_per_cu
= DIV_ROUND_UP(max_block_threads
, wave_size
);
6923 unsigned min_waves_per_simd
= DIV_ROUND_UP(min_waves_per_cu
, 4);
6925 max_vgprs
= max_vgprs
/ min_waves_per_simd
;
6926 max_sgprs
= MIN2(max_sgprs
/ min_waves_per_simd
, max_sgprs_per_wave
);
6928 if (shader
->config
.num_sgprs
> max_sgprs
||
6929 shader
->config
.num_vgprs
> max_vgprs
) {
6930 fprintf(stderr
, "LLVM failed to compile a shader correctly: "
6931 "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n",
6932 shader
->config
.num_sgprs
, shader
->config
.num_vgprs
,
6933 max_sgprs
, max_vgprs
);
6935 /* Just terminate the process, because dependent
6936 * shaders can hang due to bad input data, but use
6937 * the env var to allow shader-db to work.
6939 if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false))
6944 /* Add the scratch offset to input SGPRs. */
6945 if (shader
->config
.scratch_bytes_per_wave
&& !is_merged_shader(&ctx
))
6946 shader
->info
.num_input_sgprs
+= 1; /* scratch byte offset */
6948 /* Calculate the number of fragment input VGPRs. */
6949 if (ctx
.type
== PIPE_SHADER_FRAGMENT
) {
6950 shader
->info
.num_input_vgprs
= 0;
6951 shader
->info
.face_vgpr_index
= -1;
6952 shader
->info
.ancillary_vgpr_index
= -1;
6954 if (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
6955 shader
->info
.num_input_vgprs
+= 2;
6956 if (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
6957 shader
->info
.num_input_vgprs
+= 2;
6958 if (G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
6959 shader
->info
.num_input_vgprs
+= 2;
6960 if (G_0286CC_PERSP_PULL_MODEL_ENA(shader
->config
.spi_ps_input_addr
))
6961 shader
->info
.num_input_vgprs
+= 3;
6962 if (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
6963 shader
->info
.num_input_vgprs
+= 2;
6964 if (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
6965 shader
->info
.num_input_vgprs
+= 2;
6966 if (G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
6967 shader
->info
.num_input_vgprs
+= 2;
6968 if (G_0286CC_LINE_STIPPLE_TEX_ENA(shader
->config
.spi_ps_input_addr
))
6969 shader
->info
.num_input_vgprs
+= 1;
6970 if (G_0286CC_POS_X_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6971 shader
->info
.num_input_vgprs
+= 1;
6972 if (G_0286CC_POS_Y_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6973 shader
->info
.num_input_vgprs
+= 1;
6974 if (G_0286CC_POS_Z_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6975 shader
->info
.num_input_vgprs
+= 1;
6976 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6977 shader
->info
.num_input_vgprs
+= 1;
6978 if (G_0286CC_FRONT_FACE_ENA(shader
->config
.spi_ps_input_addr
)) {
6979 shader
->info
.face_vgpr_index
= shader
->info
.num_input_vgprs
;
6980 shader
->info
.num_input_vgprs
+= 1;
6982 if (G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
)) {
6983 shader
->info
.ancillary_vgpr_index
= shader
->info
.num_input_vgprs
;
6984 shader
->info
.num_input_vgprs
+= 1;
6986 if (G_0286CC_SAMPLE_COVERAGE_ENA(shader
->config
.spi_ps_input_addr
))
6987 shader
->info
.num_input_vgprs
+= 1;
6988 if (G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
))
6989 shader
->info
.num_input_vgprs
+= 1;
6992 si_calculate_max_simd_waves(shader
);
6993 si_shader_dump_stats_for_shader_db(sscreen
, shader
, debug
);
6998 * Create, compile and return a shader part (prolog or epilog).
7000 * \param sscreen screen
7001 * \param list list of shader parts of the same category
7002 * \param type shader type
7003 * \param key shader part key
7004 * \param prolog whether the part being requested is a prolog
7005 * \param tm LLVM target machine
7006 * \param debug debug callback
7007 * \param build the callback responsible for building the main function
7008 * \return non-NULL on success
7010 static struct si_shader_part
*
7011 si_get_shader_part(struct si_screen
*sscreen
,
7012 struct si_shader_part
**list
,
7013 enum pipe_shader_type type
,
7015 union si_shader_part_key
*key
,
7016 struct ac_llvm_compiler
*compiler
,
7017 struct pipe_debug_callback
*debug
,
7018 void (*build
)(struct si_shader_context
*,
7019 union si_shader_part_key
*),
7022 struct si_shader_part
*result
;
7024 mtx_lock(&sscreen
->shader_parts_mutex
);
7026 /* Find existing. */
7027 for (result
= *list
; result
; result
= result
->next
) {
7028 if (memcmp(&result
->key
, key
, sizeof(*key
)) == 0) {
7029 mtx_unlock(&sscreen
->shader_parts_mutex
);
7034 /* Compile a new one. */
7035 result
= CALLOC_STRUCT(si_shader_part
);
7038 struct si_shader shader
= {};
7039 struct si_shader_context ctx
;
7041 si_init_shader_ctx(&ctx
, sscreen
, compiler
);
7042 ctx
.shader
= &shader
;
7046 case PIPE_SHADER_VERTEX
:
7047 shader
.key
.as_ls
= key
->vs_prolog
.as_ls
;
7048 shader
.key
.as_es
= key
->vs_prolog
.as_es
;
7050 case PIPE_SHADER_TESS_CTRL
:
7052 shader
.key
.part
.tcs
.epilog
= key
->tcs_epilog
.states
;
7054 case PIPE_SHADER_GEOMETRY
:
7057 case PIPE_SHADER_FRAGMENT
:
7059 shader
.key
.part
.ps
.prolog
= key
->ps_prolog
.states
;
7061 shader
.key
.part
.ps
.epilog
= key
->ps_epilog
.states
;
7064 unreachable("bad shader part");
7070 si_llvm_optimize_module(&ctx
);
7072 if (si_compile_llvm(sscreen
, &result
->binary
, &result
->config
, compiler
,
7073 ctx
.ac
.module
, debug
, ctx
.type
, name
, false)) {
7079 result
->next
= *list
;
7083 si_llvm_dispose(&ctx
);
7084 mtx_unlock(&sscreen
->shader_parts_mutex
);
7088 static LLVMValueRef
si_prolog_get_rw_buffers(struct si_shader_context
*ctx
)
7090 LLVMValueRef ptr
[2], list
;
7091 bool merged_shader
= is_merged_shader(ctx
);
7093 ptr
[0] = LLVMGetParam(ctx
->main_fn
, (merged_shader
? 8 : 0) + SI_SGPR_RW_BUFFERS
);
7094 list
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
[0],
7095 ac_array_in_const32_addr_space(ctx
->v4i32
), "");
7100 * Build the vertex shader prolog function.
7102 * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values).
7103 * All inputs are returned unmodified. The vertex load indices are
7104 * stored after them, which will be used by the API VS for fetching inputs.
7106 * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are:
7111 * (VertexID + BaseVertex),
7112 * (InstanceID + StartInstance),
7113 * (InstanceID / 2 + StartInstance)
7115 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
7116 union si_shader_part_key
*key
)
7118 struct si_function_info fninfo
;
7119 LLVMTypeRef
*returns
;
7120 LLVMValueRef ret
, func
;
7122 unsigned first_vs_vgpr
= key
->vs_prolog
.num_merged_next_stage_vgprs
;
7123 unsigned num_input_vgprs
= key
->vs_prolog
.num_merged_next_stage_vgprs
+ 4;
7124 LLVMValueRef input_vgprs
[9];
7125 unsigned num_all_input_regs
= key
->vs_prolog
.num_input_sgprs
+
7127 unsigned user_sgpr_base
= key
->vs_prolog
.num_merged_next_stage_vgprs
? 8 : 0;
7129 si_init_function_info(&fninfo
);
7131 /* 4 preloaded VGPRs + vertex load indices as prolog outputs */
7132 returns
= alloca((num_all_input_regs
+ key
->vs_prolog
.last_input
+ 1) *
7133 sizeof(LLVMTypeRef
));
7136 /* Declare input and output SGPRs. */
7137 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
7138 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7139 returns
[num_returns
++] = ctx
->i32
;
7142 /* Preloaded VGPRs (outputs must be floats) */
7143 for (i
= 0; i
< num_input_vgprs
; i
++) {
7144 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &input_vgprs
[i
]);
7145 returns
[num_returns
++] = ctx
->f32
;
7148 /* Vertex load indices. */
7149 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++)
7150 returns
[num_returns
++] = ctx
->f32
;
7152 /* Create the function. */
7153 si_create_function(ctx
, "vs_prolog", returns
, num_returns
, &fninfo
, 0);
7154 func
= ctx
->main_fn
;
7156 if (key
->vs_prolog
.num_merged_next_stage_vgprs
) {
7157 if (!key
->vs_prolog
.is_monolithic
)
7158 si_init_exec_from_input(ctx
, 3, 0);
7160 if (key
->vs_prolog
.as_ls
&&
7161 ctx
->screen
->has_ls_vgpr_init_bug
) {
7162 /* If there are no HS threads, SPI loads the LS VGPRs
7163 * starting at VGPR 0. Shift them back to where they
7166 LLVMValueRef has_hs_threads
=
7167 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
7168 si_unpack_param(ctx
, 3, 8, 8),
7171 for (i
= 4; i
> 0; --i
) {
7172 input_vgprs
[i
+ 1] =
7173 LLVMBuildSelect(ctx
->ac
.builder
, has_hs_threads
,
7175 input_vgprs
[i
- 1], "");
7180 unsigned vertex_id_vgpr
= first_vs_vgpr
;
7181 unsigned instance_id_vgpr
= first_vs_vgpr
+ (key
->vs_prolog
.as_ls
? 2 : 1);
7183 ctx
->abi
.vertex_id
= input_vgprs
[vertex_id_vgpr
];
7184 ctx
->abi
.instance_id
= input_vgprs
[instance_id_vgpr
];
7186 /* InstanceID = VertexID >> 16;
7187 * VertexID = VertexID & 0xffff;
7189 if (key
->vs_prolog
.states
.unpack_instance_id_from_vertex_id
) {
7190 ctx
->abi
.instance_id
= LLVMBuildLShr(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
7191 LLVMConstInt(ctx
->i32
, 16, 0), "");
7192 ctx
->abi
.vertex_id
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
7193 LLVMConstInt(ctx
->i32
, 0xffff, 0), "");
7196 /* Copy inputs to outputs. This should be no-op, as the registers match,
7197 * but it will prevent the compiler from overwriting them unintentionally.
7199 ret
= ctx
->return_value
;
7200 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
7201 LLVMValueRef p
= LLVMGetParam(func
, i
);
7202 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
7204 for (i
= 0; i
< num_input_vgprs
; i
++) {
7205 LLVMValueRef p
= input_vgprs
[i
];
7207 if (i
== vertex_id_vgpr
)
7208 p
= ctx
->abi
.vertex_id
;
7209 else if (i
== instance_id_vgpr
)
7210 p
= ctx
->abi
.instance_id
;
7212 p
= ac_to_float(&ctx
->ac
, p
);
7213 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
,
7214 key
->vs_prolog
.num_input_sgprs
+ i
, "");
7217 /* Compute vertex load indices from instance divisors. */
7218 LLVMValueRef instance_divisor_constbuf
= NULL
;
7220 if (key
->vs_prolog
.states
.instance_divisor_is_fetched
) {
7221 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
7222 LLVMValueRef buf_index
=
7223 LLVMConstInt(ctx
->i32
, SI_VS_CONST_INSTANCE_DIVISORS
, 0);
7224 instance_divisor_constbuf
=
7225 ac_build_load_to_sgpr(&ctx
->ac
, list
, buf_index
);
7228 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++) {
7229 bool divisor_is_one
=
7230 key
->vs_prolog
.states
.instance_divisor_is_one
& (1u << i
);
7231 bool divisor_is_fetched
=
7232 key
->vs_prolog
.states
.instance_divisor_is_fetched
& (1u << i
);
7233 LLVMValueRef index
= NULL
;
7235 if (divisor_is_one
) {
7236 index
= ctx
->abi
.instance_id
;
7237 } else if (divisor_is_fetched
) {
7238 LLVMValueRef udiv_factors
[4];
7240 for (unsigned j
= 0; j
< 4; j
++) {
7242 buffer_load_const(ctx
, instance_divisor_constbuf
,
7243 LLVMConstInt(ctx
->i32
, i
*16 + j
*4, 0));
7244 udiv_factors
[j
] = ac_to_integer(&ctx
->ac
, udiv_factors
[j
]);
7246 /* The faster NUW version doesn't work when InstanceID == UINT_MAX.
7247 * Such InstanceID might not be achievable in a reasonable time though.
7249 index
= ac_build_fast_udiv_nuw(&ctx
->ac
, ctx
->abi
.instance_id
,
7250 udiv_factors
[0], udiv_factors
[1],
7251 udiv_factors
[2], udiv_factors
[3]);
7254 if (divisor_is_one
|| divisor_is_fetched
) {
7255 /* Add StartInstance. */
7256 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
7257 LLVMGetParam(ctx
->main_fn
, user_sgpr_base
+
7258 SI_SGPR_START_INSTANCE
), "");
7260 /* VertexID + BaseVertex */
7261 index
= LLVMBuildAdd(ctx
->ac
.builder
,
7263 LLVMGetParam(func
, user_sgpr_base
+
7264 SI_SGPR_BASE_VERTEX
), "");
7267 index
= ac_to_float(&ctx
->ac
, index
);
7268 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, index
,
7269 fninfo
.num_params
+ i
, "");
7272 si_llvm_build_ret(ctx
, ret
);
7275 static bool si_get_vs_prolog(struct si_screen
*sscreen
,
7276 struct ac_llvm_compiler
*compiler
,
7277 struct si_shader
*shader
,
7278 struct pipe_debug_callback
*debug
,
7279 struct si_shader
*main_part
,
7280 const struct si_vs_prolog_bits
*key
)
7282 struct si_shader_selector
*vs
= main_part
->selector
;
7284 if (!si_vs_needs_prolog(vs
, key
))
7287 /* Get the prolog. */
7288 union si_shader_part_key prolog_key
;
7289 si_get_vs_prolog_key(&vs
->info
, main_part
->info
.num_input_sgprs
,
7290 key
, shader
, &prolog_key
);
7293 si_get_shader_part(sscreen
, &sscreen
->vs_prologs
,
7294 PIPE_SHADER_VERTEX
, true, &prolog_key
, compiler
,
7295 debug
, si_build_vs_prolog_function
,
7296 "Vertex Shader Prolog");
7297 return shader
->prolog
!= NULL
;
7301 * Select and compile (or reuse) vertex shader parts (prolog & epilog).
7303 static bool si_shader_select_vs_parts(struct si_screen
*sscreen
,
7304 struct ac_llvm_compiler
*compiler
,
7305 struct si_shader
*shader
,
7306 struct pipe_debug_callback
*debug
)
7308 return si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, shader
,
7309 &shader
->key
.part
.vs
.prolog
);
7313 * Compile the TCS epilog function. This writes tesselation factors to memory
7314 * based on the output primitive type of the tesselator (determined by TES).
7316 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
7317 union si_shader_part_key
*key
)
7319 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
7320 struct si_function_info fninfo
;
7323 si_init_function_info(&fninfo
);
7325 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
7326 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7327 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7328 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7329 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* wave info */
7330 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7331 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7332 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7333 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7334 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7335 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7336 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7337 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7338 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7339 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7340 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7341 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7342 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7343 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7344 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7346 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7347 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7348 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7349 add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7350 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7351 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7352 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7353 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7354 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7355 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7358 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7359 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7360 unsigned tess_factors_idx
=
7361 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* patch index within the wave (REL_PATCH_ID) */
7362 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* invocation ID within the patch */
7363 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* LDS offset where tess factors should be loaded from */
7365 for (unsigned i
= 0; i
< 6; i
++)
7366 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* tess factors */
7368 /* Create the function. */
7369 si_create_function(ctx
, "tcs_epilog", NULL
, 0, &fninfo
,
7370 ctx
->screen
->info
.chip_class
>= GFX7
? 128 : 64);
7371 ac_declare_lds_as_pointer(&ctx
->ac
);
7372 func
= ctx
->main_fn
;
7374 LLVMValueRef invoc0_tess_factors
[6];
7375 for (unsigned i
= 0; i
< 6; i
++)
7376 invoc0_tess_factors
[i
] = LLVMGetParam(func
, tess_factors_idx
+ 3 + i
);
7378 si_write_tess_factors(bld_base
,
7379 LLVMGetParam(func
, tess_factors_idx
),
7380 LLVMGetParam(func
, tess_factors_idx
+ 1),
7381 LLVMGetParam(func
, tess_factors_idx
+ 2),
7382 invoc0_tess_factors
, invoc0_tess_factors
+ 4);
7384 LLVMBuildRetVoid(ctx
->ac
.builder
);
7388 * Select and compile (or reuse) TCS parts (epilog).
7390 static bool si_shader_select_tcs_parts(struct si_screen
*sscreen
,
7391 struct ac_llvm_compiler
*compiler
,
7392 struct si_shader
*shader
,
7393 struct pipe_debug_callback
*debug
)
7395 if (sscreen
->info
.chip_class
>= GFX9
) {
7396 struct si_shader
*ls_main_part
=
7397 shader
->key
.part
.tcs
.ls
->main_shader_part_ls
;
7399 if (!si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, ls_main_part
,
7400 &shader
->key
.part
.tcs
.ls_prolog
))
7403 shader
->previous_stage
= ls_main_part
;
7406 /* Get the epilog. */
7407 union si_shader_part_key epilog_key
;
7408 memset(&epilog_key
, 0, sizeof(epilog_key
));
7409 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
7411 shader
->epilog
= si_get_shader_part(sscreen
, &sscreen
->tcs_epilogs
,
7412 PIPE_SHADER_TESS_CTRL
, false,
7413 &epilog_key
, compiler
, debug
,
7414 si_build_tcs_epilog_function
,
7415 "Tessellation Control Shader Epilog");
7416 return shader
->epilog
!= NULL
;
7420 * Select and compile (or reuse) GS parts (prolog).
7422 static bool si_shader_select_gs_parts(struct si_screen
*sscreen
,
7423 struct ac_llvm_compiler
*compiler
,
7424 struct si_shader
*shader
,
7425 struct pipe_debug_callback
*debug
)
7427 if (sscreen
->info
.chip_class
>= GFX9
) {
7428 struct si_shader
*es_main_part
=
7429 shader
->key
.part
.gs
.es
->main_shader_part_es
;
7431 if (shader
->key
.part
.gs
.es
->type
== PIPE_SHADER_VERTEX
&&
7432 !si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, es_main_part
,
7433 &shader
->key
.part
.gs
.vs_prolog
))
7436 shader
->previous_stage
= es_main_part
;
7439 if (!shader
->key
.part
.gs
.prolog
.tri_strip_adj_fix
)
7442 union si_shader_part_key prolog_key
;
7443 memset(&prolog_key
, 0, sizeof(prolog_key
));
7444 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
7446 shader
->prolog2
= si_get_shader_part(sscreen
, &sscreen
->gs_prologs
,
7447 PIPE_SHADER_GEOMETRY
, true,
7448 &prolog_key
, compiler
, debug
,
7449 si_build_gs_prolog_function
,
7450 "Geometry Shader Prolog");
7451 return shader
->prolog2
!= NULL
;
7455 * Build the pixel shader prolog function. This handles:
7456 * - two-side color selection and interpolation
7457 * - overriding interpolation parameters for the API PS
7458 * - polygon stippling
7460 * All preloaded SGPRs and VGPRs are passed through unmodified unless they are
7461 * overriden by other states. (e.g. per-sample interpolation)
7462 * Interpolated colors are stored after the preloaded VGPRs.
7464 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
7465 union si_shader_part_key
*key
)
7467 struct si_function_info fninfo
;
7468 LLVMValueRef ret
, func
;
7469 int num_returns
, i
, num_color_channels
;
7471 assert(si_need_ps_prolog(key
));
7473 si_init_function_info(&fninfo
);
7475 /* Declare inputs. */
7476 for (i
= 0; i
< key
->ps_prolog
.num_input_sgprs
; i
++)
7477 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7479 for (i
= 0; i
< key
->ps_prolog
.num_input_vgprs
; i
++)
7480 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
7482 /* Declare outputs (same as inputs + add colors if needed) */
7483 num_returns
= fninfo
.num_params
;
7484 num_color_channels
= util_bitcount(key
->ps_prolog
.colors_read
);
7485 for (i
= 0; i
< num_color_channels
; i
++)
7486 fninfo
.types
[num_returns
++] = ctx
->f32
;
7488 /* Create the function. */
7489 si_create_function(ctx
, "ps_prolog", fninfo
.types
, num_returns
,
7491 func
= ctx
->main_fn
;
7493 /* Copy inputs to outputs. This should be no-op, as the registers match,
7494 * but it will prevent the compiler from overwriting them unintentionally.
7496 ret
= ctx
->return_value
;
7497 for (i
= 0; i
< fninfo
.num_params
; i
++) {
7498 LLVMValueRef p
= LLVMGetParam(func
, i
);
7499 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
7502 /* Polygon stippling. */
7503 if (key
->ps_prolog
.states
.poly_stipple
) {
7504 /* POS_FIXED_PT is always last. */
7505 unsigned pos
= key
->ps_prolog
.num_input_sgprs
+
7506 key
->ps_prolog
.num_input_vgprs
- 1;
7507 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
7509 si_llvm_emit_polygon_stipple(ctx
, list
, pos
);
7512 if (key
->ps_prolog
.states
.bc_optimize_for_persp
||
7513 key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7514 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7515 LLVMValueRef center
[2], centroid
[2], tmp
, bc_optimize
;
7517 /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER;
7518 * The hw doesn't compute CENTROID if the whole wave only
7519 * contains fully-covered quads.
7521 * PRIM_MASK is after user SGPRs.
7523 bc_optimize
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7524 bc_optimize
= LLVMBuildLShr(ctx
->ac
.builder
, bc_optimize
,
7525 LLVMConstInt(ctx
->i32
, 31, 0), "");
7526 bc_optimize
= LLVMBuildTrunc(ctx
->ac
.builder
, bc_optimize
,
7529 if (key
->ps_prolog
.states
.bc_optimize_for_persp
) {
7530 /* Read PERSP_CENTER. */
7531 for (i
= 0; i
< 2; i
++)
7532 center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7533 /* Read PERSP_CENTROID. */
7534 for (i
= 0; i
< 2; i
++)
7535 centroid
[i
] = LLVMGetParam(func
, base
+ 4 + i
);
7536 /* Select PERSP_CENTROID. */
7537 for (i
= 0; i
< 2; i
++) {
7538 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7539 center
[i
], centroid
[i
], "");
7540 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7541 tmp
, base
+ 4 + i
, "");
7544 if (key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7545 /* Read LINEAR_CENTER. */
7546 for (i
= 0; i
< 2; i
++)
7547 center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7548 /* Read LINEAR_CENTROID. */
7549 for (i
= 0; i
< 2; i
++)
7550 centroid
[i
] = LLVMGetParam(func
, base
+ 10 + i
);
7551 /* Select LINEAR_CENTROID. */
7552 for (i
= 0; i
< 2; i
++) {
7553 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7554 center
[i
], centroid
[i
], "");
7555 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7556 tmp
, base
+ 10 + i
, "");
7561 /* Force per-sample interpolation. */
7562 if (key
->ps_prolog
.states
.force_persp_sample_interp
) {
7563 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7564 LLVMValueRef persp_sample
[2];
7566 /* Read PERSP_SAMPLE. */
7567 for (i
= 0; i
< 2; i
++)
7568 persp_sample
[i
] = LLVMGetParam(func
, base
+ i
);
7569 /* Overwrite PERSP_CENTER. */
7570 for (i
= 0; i
< 2; i
++)
7571 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7572 persp_sample
[i
], base
+ 2 + i
, "");
7573 /* Overwrite PERSP_CENTROID. */
7574 for (i
= 0; i
< 2; i
++)
7575 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7576 persp_sample
[i
], base
+ 4 + i
, "");
7578 if (key
->ps_prolog
.states
.force_linear_sample_interp
) {
7579 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7580 LLVMValueRef linear_sample
[2];
7582 /* Read LINEAR_SAMPLE. */
7583 for (i
= 0; i
< 2; i
++)
7584 linear_sample
[i
] = LLVMGetParam(func
, base
+ 6 + i
);
7585 /* Overwrite LINEAR_CENTER. */
7586 for (i
= 0; i
< 2; i
++)
7587 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7588 linear_sample
[i
], base
+ 8 + i
, "");
7589 /* Overwrite LINEAR_CENTROID. */
7590 for (i
= 0; i
< 2; i
++)
7591 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7592 linear_sample
[i
], base
+ 10 + i
, "");
7595 /* Force center interpolation. */
7596 if (key
->ps_prolog
.states
.force_persp_center_interp
) {
7597 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7598 LLVMValueRef persp_center
[2];
7600 /* Read PERSP_CENTER. */
7601 for (i
= 0; i
< 2; i
++)
7602 persp_center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7603 /* Overwrite PERSP_SAMPLE. */
7604 for (i
= 0; i
< 2; i
++)
7605 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7606 persp_center
[i
], base
+ i
, "");
7607 /* Overwrite PERSP_CENTROID. */
7608 for (i
= 0; i
< 2; i
++)
7609 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7610 persp_center
[i
], base
+ 4 + i
, "");
7612 if (key
->ps_prolog
.states
.force_linear_center_interp
) {
7613 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7614 LLVMValueRef linear_center
[2];
7616 /* Read LINEAR_CENTER. */
7617 for (i
= 0; i
< 2; i
++)
7618 linear_center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7619 /* Overwrite LINEAR_SAMPLE. */
7620 for (i
= 0; i
< 2; i
++)
7621 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7622 linear_center
[i
], base
+ 6 + i
, "");
7623 /* Overwrite LINEAR_CENTROID. */
7624 for (i
= 0; i
< 2; i
++)
7625 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7626 linear_center
[i
], base
+ 10 + i
, "");
7629 /* Interpolate colors. */
7630 unsigned color_out_idx
= 0;
7631 for (i
= 0; i
< 2; i
++) {
7632 unsigned writemask
= (key
->ps_prolog
.colors_read
>> (i
* 4)) & 0xf;
7633 unsigned face_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7634 key
->ps_prolog
.face_vgpr_index
;
7635 LLVMValueRef interp
[2], color
[4];
7636 LLVMValueRef interp_ij
= NULL
, prim_mask
= NULL
, face
= NULL
;
7641 /* If the interpolation qualifier is not CONSTANT (-1). */
7642 if (key
->ps_prolog
.color_interp_vgpr_index
[i
] != -1) {
7643 unsigned interp_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7644 key
->ps_prolog
.color_interp_vgpr_index
[i
];
7646 /* Get the (i,j) updated by bc_optimize handling. */
7647 interp
[0] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7649 interp
[1] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7650 interp_vgpr
+ 1, "");
7651 interp_ij
= ac_build_gather_values(&ctx
->ac
, interp
, 2);
7654 /* Use the absolute location of the input. */
7655 prim_mask
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7657 if (key
->ps_prolog
.states
.color_two_side
) {
7658 face
= LLVMGetParam(func
, face_vgpr
);
7659 face
= ac_to_integer(&ctx
->ac
, face
);
7662 interp_fs_input(ctx
,
7663 key
->ps_prolog
.color_attr_index
[i
],
7664 TGSI_SEMANTIC_COLOR
, i
,
7665 key
->ps_prolog
.num_interp_inputs
,
7666 key
->ps_prolog
.colors_read
, interp_ij
,
7667 prim_mask
, face
, color
);
7670 unsigned chan
= u_bit_scan(&writemask
);
7671 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, color
[chan
],
7672 fninfo
.num_params
+ color_out_idx
++, "");
7676 /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec
7679 * "When per-sample shading is active due to the use of a fragment
7680 * input qualified by sample or due to the use of the gl_SampleID
7681 * or gl_SamplePosition variables, only the bit for the current
7682 * sample is set in gl_SampleMaskIn. When state specifies multiple
7683 * fragment shader invocations for a given fragment, the sample
7684 * mask for any single fragment shader invocation may specify a
7685 * subset of the covered samples for the fragment. In this case,
7686 * the bit corresponding to each covered sample will be set in
7687 * exactly one fragment shader invocation."
7689 * The samplemask loaded by hardware is always the coverage of the
7690 * entire pixel/fragment, so mask bits out based on the sample ID.
7692 if (key
->ps_prolog
.states
.samplemask_log_ps_iter
) {
7693 /* The bit pattern matches that used by fixed function fragment
7695 static const uint16_t ps_iter_masks
[] = {
7696 0xffff, /* not used */
7702 assert(key
->ps_prolog
.states
.samplemask_log_ps_iter
< ARRAY_SIZE(ps_iter_masks
));
7704 uint32_t ps_iter_mask
= ps_iter_masks
[key
->ps_prolog
.states
.samplemask_log_ps_iter
];
7705 unsigned ancillary_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7706 key
->ps_prolog
.ancillary_vgpr_index
;
7707 LLVMValueRef sampleid
= si_unpack_param(ctx
, ancillary_vgpr
, 8, 4);
7708 LLVMValueRef samplemask
= LLVMGetParam(func
, ancillary_vgpr
+ 1);
7710 samplemask
= ac_to_integer(&ctx
->ac
, samplemask
);
7711 samplemask
= LLVMBuildAnd(
7714 LLVMBuildShl(ctx
->ac
.builder
,
7715 LLVMConstInt(ctx
->i32
, ps_iter_mask
, false),
7718 samplemask
= ac_to_float(&ctx
->ac
, samplemask
);
7720 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, samplemask
,
7721 ancillary_vgpr
+ 1, "");
7724 /* Tell LLVM to insert WQM instruction sequence when needed. */
7725 if (key
->ps_prolog
.wqm
) {
7726 LLVMAddTargetDependentFunctionAttr(func
,
7727 "amdgpu-ps-wqm-outputs", "");
7730 si_llvm_build_ret(ctx
, ret
);
7734 * Build the pixel shader epilog function. This handles everything that must be
7735 * emulated for pixel shader exports. (alpha-test, format conversions, etc)
7737 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
7738 union si_shader_part_key
*key
)
7740 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
7741 struct si_function_info fninfo
;
7742 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
7744 struct si_ps_exports exp
= {};
7746 si_init_function_info(&fninfo
);
7748 /* Declare input SGPRs. */
7749 ctx
->param_rw_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7750 ctx
->param_bindless_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7751 ctx
->param_const_and_shader_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7752 ctx
->param_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->ac
.intptr
);
7753 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
7755 /* Declare input VGPRs. */
7756 unsigned required_num_params
=
7757 fninfo
.num_sgpr_params
+
7758 util_bitcount(key
->ps_epilog
.colors_written
) * 4 +
7759 key
->ps_epilog
.writes_z
+
7760 key
->ps_epilog
.writes_stencil
+
7761 key
->ps_epilog
.writes_samplemask
;
7763 required_num_params
= MAX2(required_num_params
,
7764 fninfo
.num_sgpr_params
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
7766 while (fninfo
.num_params
< required_num_params
)
7767 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
7769 /* Create the function. */
7770 si_create_function(ctx
, "ps_epilog", NULL
, 0, &fninfo
, 0);
7771 /* Disable elimination of unused inputs. */
7772 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
7773 "InitialPSInputAddr", 0xffffff);
7775 /* Process colors. */
7776 unsigned vgpr
= fninfo
.num_sgpr_params
;
7777 unsigned colors_written
= key
->ps_epilog
.colors_written
;
7778 int last_color_export
= -1;
7780 /* Find the last color export. */
7781 if (!key
->ps_epilog
.writes_z
&&
7782 !key
->ps_epilog
.writes_stencil
&&
7783 !key
->ps_epilog
.writes_samplemask
) {
7784 unsigned spi_format
= key
->ps_epilog
.states
.spi_shader_col_format
;
7786 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
7787 if (colors_written
== 0x1 && key
->ps_epilog
.states
.last_cbuf
> 0) {
7788 /* Just set this if any of the colorbuffers are enabled. */
7790 ((1ull << (4 * (key
->ps_epilog
.states
.last_cbuf
+ 1))) - 1))
7791 last_color_export
= 0;
7793 for (i
= 0; i
< 8; i
++)
7794 if (colors_written
& (1 << i
) &&
7795 (spi_format
>> (i
* 4)) & 0xf)
7796 last_color_export
= i
;
7800 while (colors_written
) {
7801 LLVMValueRef color
[4];
7802 int mrt
= u_bit_scan(&colors_written
);
7804 for (i
= 0; i
< 4; i
++)
7805 color
[i
] = LLVMGetParam(ctx
->main_fn
, vgpr
++);
7807 si_export_mrt_color(bld_base
, color
, mrt
,
7808 fninfo
.num_params
- 1,
7809 mrt
== last_color_export
, &exp
);
7812 /* Process depth, stencil, samplemask. */
7813 if (key
->ps_epilog
.writes_z
)
7814 depth
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7815 if (key
->ps_epilog
.writes_stencil
)
7816 stencil
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7817 if (key
->ps_epilog
.writes_samplemask
)
7818 samplemask
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7820 if (depth
|| stencil
|| samplemask
)
7821 si_export_mrt_z(bld_base
, depth
, stencil
, samplemask
, &exp
);
7822 else if (last_color_export
== -1)
7823 ac_build_export_null(&ctx
->ac
);
7826 si_emit_ps_exports(ctx
, &exp
);
7829 LLVMBuildRetVoid(ctx
->ac
.builder
);
7833 * Select and compile (or reuse) pixel shader parts (prolog & epilog).
7835 static bool si_shader_select_ps_parts(struct si_screen
*sscreen
,
7836 struct ac_llvm_compiler
*compiler
,
7837 struct si_shader
*shader
,
7838 struct pipe_debug_callback
*debug
)
7840 union si_shader_part_key prolog_key
;
7841 union si_shader_part_key epilog_key
;
7843 /* Get the prolog. */
7844 si_get_ps_prolog_key(shader
, &prolog_key
, true);
7846 /* The prolog is a no-op if these aren't set. */
7847 if (si_need_ps_prolog(&prolog_key
)) {
7849 si_get_shader_part(sscreen
, &sscreen
->ps_prologs
,
7850 PIPE_SHADER_FRAGMENT
, true,
7851 &prolog_key
, compiler
, debug
,
7852 si_build_ps_prolog_function
,
7853 "Fragment Shader Prolog");
7854 if (!shader
->prolog
)
7858 /* Get the epilog. */
7859 si_get_ps_epilog_key(shader
, &epilog_key
);
7862 si_get_shader_part(sscreen
, &sscreen
->ps_epilogs
,
7863 PIPE_SHADER_FRAGMENT
, false,
7864 &epilog_key
, compiler
, debug
,
7865 si_build_ps_epilog_function
,
7866 "Fragment Shader Epilog");
7867 if (!shader
->epilog
)
7870 /* Enable POS_FIXED_PT if polygon stippling is enabled. */
7871 if (shader
->key
.part
.ps
.prolog
.poly_stipple
) {
7872 shader
->config
.spi_ps_input_ena
|= S_0286CC_POS_FIXED_PT_ENA(1);
7873 assert(G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
));
7876 /* Set up the enable bits for per-sample shading if needed. */
7877 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
&&
7878 (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
7879 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7880 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTER_ENA
;
7881 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
7882 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_SAMPLE_ENA(1);
7884 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
&&
7885 (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
7886 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7887 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTER_ENA
;
7888 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
7889 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_SAMPLE_ENA(1);
7891 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
&&
7892 (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
7893 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7894 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_SAMPLE_ENA
;
7895 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
7896 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
7898 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
&&
7899 (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
7900 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7901 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_SAMPLE_ENA
;
7902 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
7903 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
7906 /* POW_W_FLOAT requires that one of the perspective weights is enabled. */
7907 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_ena
) &&
7908 !(shader
->config
.spi_ps_input_ena
& 0xf)) {
7909 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
7910 assert(G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
7913 /* At least one pair of interpolation weights must be enabled. */
7914 if (!(shader
->config
.spi_ps_input_ena
& 0x7f)) {
7915 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
7916 assert(G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
7919 /* Samplemask fixup requires the sample ID. */
7920 if (shader
->key
.part
.ps
.prolog
.samplemask_log_ps_iter
) {
7921 shader
->config
.spi_ps_input_ena
|= S_0286CC_ANCILLARY_ENA(1);
7922 assert(G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
));
7925 /* The sample mask input is always enabled, because the API shader always
7926 * passes it through to the epilog. Disable it here if it's unused.
7928 if (!shader
->key
.part
.ps
.epilog
.poly_line_smoothing
&&
7929 !shader
->selector
->info
.reads_samplemask
)
7930 shader
->config
.spi_ps_input_ena
&= C_0286CC_SAMPLE_COVERAGE_ENA
;
7935 void si_multiwave_lds_size_workaround(struct si_screen
*sscreen
,
7938 /* If tessellation is all offchip and on-chip GS isn't used, this
7939 * workaround is not needed.
7943 /* SPI barrier management bug:
7944 * Make sure we have at least 4k of LDS in use to avoid the bug.
7945 * It applies to workgroup sizes of more than one wavefront.
7947 if (sscreen
->info
.family
== CHIP_BONAIRE
||
7948 sscreen
->info
.family
== CHIP_KABINI
)
7949 *lds_size
= MAX2(*lds_size
, 8);
7952 static void si_fix_resource_usage(struct si_screen
*sscreen
,
7953 struct si_shader
*shader
)
7955 unsigned min_sgprs
= shader
->info
.num_input_sgprs
+ 2; /* VCC */
7957 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
, min_sgprs
);
7959 if (shader
->selector
->type
== PIPE_SHADER_COMPUTE
&&
7960 si_get_max_workgroup_size(shader
) > 64) {
7961 si_multiwave_lds_size_workaround(sscreen
,
7962 &shader
->config
.lds_size
);
7966 bool si_shader_create(struct si_screen
*sscreen
, struct ac_llvm_compiler
*compiler
,
7967 struct si_shader
*shader
,
7968 struct pipe_debug_callback
*debug
)
7970 struct si_shader_selector
*sel
= shader
->selector
;
7971 struct si_shader
*mainp
= *si_get_main_shader_part(sel
, &shader
->key
);
7974 /* LS, ES, VS are compiled on demand if the main part hasn't been
7975 * compiled for that stage.
7977 * Vertex shaders are compiled on demand when a vertex fetch
7978 * workaround must be applied.
7980 if (shader
->is_monolithic
) {
7981 /* Monolithic shader (compiled as a whole, has many variants,
7982 * may take a long time to compile).
7984 r
= si_compile_tgsi_shader(sscreen
, compiler
, shader
, debug
);
7988 /* The shader consists of several parts:
7990 * - the middle part is the user shader, it has 1 variant only
7991 * and it was compiled during the creation of the shader
7993 * - the prolog part is inserted at the beginning
7994 * - the epilog part is inserted at the end
7996 * The prolog and epilog have many (but simple) variants.
7998 * Starting with gfx9, geometry and tessellation control
7999 * shaders also contain the prolog and user shader parts of
8000 * the previous shader stage.
8006 /* Copy the compiled TGSI shader data over. */
8007 shader
->is_binary_shared
= true;
8008 shader
->binary
= mainp
->binary
;
8009 shader
->config
= mainp
->config
;
8010 shader
->info
.num_input_sgprs
= mainp
->info
.num_input_sgprs
;
8011 shader
->info
.num_input_vgprs
= mainp
->info
.num_input_vgprs
;
8012 shader
->info
.face_vgpr_index
= mainp
->info
.face_vgpr_index
;
8013 shader
->info
.ancillary_vgpr_index
= mainp
->info
.ancillary_vgpr_index
;
8014 memcpy(shader
->info
.vs_output_param_offset
,
8015 mainp
->info
.vs_output_param_offset
,
8016 sizeof(mainp
->info
.vs_output_param_offset
));
8017 shader
->info
.uses_instanceid
= mainp
->info
.uses_instanceid
;
8018 shader
->info
.nr_pos_exports
= mainp
->info
.nr_pos_exports
;
8019 shader
->info
.nr_param_exports
= mainp
->info
.nr_param_exports
;
8021 /* Select prologs and/or epilogs. */
8022 switch (sel
->type
) {
8023 case PIPE_SHADER_VERTEX
:
8024 if (!si_shader_select_vs_parts(sscreen
, compiler
, shader
, debug
))
8027 case PIPE_SHADER_TESS_CTRL
:
8028 if (!si_shader_select_tcs_parts(sscreen
, compiler
, shader
, debug
))
8031 case PIPE_SHADER_TESS_EVAL
:
8033 case PIPE_SHADER_GEOMETRY
:
8034 if (!si_shader_select_gs_parts(sscreen
, compiler
, shader
, debug
))
8037 case PIPE_SHADER_FRAGMENT
:
8038 if (!si_shader_select_ps_parts(sscreen
, compiler
, shader
, debug
))
8041 /* Make sure we have at least as many VGPRs as there
8042 * are allocated inputs.
8044 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8045 shader
->info
.num_input_vgprs
);
8049 /* Update SGPR and VGPR counts. */
8050 if (shader
->prolog
) {
8051 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8052 shader
->prolog
->config
.num_sgprs
);
8053 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8054 shader
->prolog
->config
.num_vgprs
);
8056 if (shader
->previous_stage
) {
8057 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8058 shader
->previous_stage
->config
.num_sgprs
);
8059 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8060 shader
->previous_stage
->config
.num_vgprs
);
8061 shader
->config
.spilled_sgprs
=
8062 MAX2(shader
->config
.spilled_sgprs
,
8063 shader
->previous_stage
->config
.spilled_sgprs
);
8064 shader
->config
.spilled_vgprs
=
8065 MAX2(shader
->config
.spilled_vgprs
,
8066 shader
->previous_stage
->config
.spilled_vgprs
);
8067 shader
->info
.private_mem_vgprs
=
8068 MAX2(shader
->info
.private_mem_vgprs
,
8069 shader
->previous_stage
->info
.private_mem_vgprs
);
8070 shader
->config
.scratch_bytes_per_wave
=
8071 MAX2(shader
->config
.scratch_bytes_per_wave
,
8072 shader
->previous_stage
->config
.scratch_bytes_per_wave
);
8073 shader
->info
.uses_instanceid
|=
8074 shader
->previous_stage
->info
.uses_instanceid
;
8076 if (shader
->prolog2
) {
8077 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8078 shader
->prolog2
->config
.num_sgprs
);
8079 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8080 shader
->prolog2
->config
.num_vgprs
);
8082 if (shader
->epilog
) {
8083 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
8084 shader
->epilog
->config
.num_sgprs
);
8085 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
8086 shader
->epilog
->config
.num_vgprs
);
8088 si_calculate_max_simd_waves(shader
);
8091 if (sscreen
->info
.chip_class
>= GFX9
&& sel
->type
== PIPE_SHADER_GEOMETRY
)
8092 gfx9_get_gs_info(shader
->previous_stage_sel
, sel
, &shader
->gs_info
);
8094 si_fix_resource_usage(sscreen
, shader
);
8095 si_shader_dump(sscreen
, shader
, debug
, sel
->info
.processor
,
8099 if (!si_shader_binary_upload(sscreen
, shader
, 0)) {
8100 fprintf(stderr
, "LLVM failed to upload shader\n");
8107 void si_shader_destroy(struct si_shader
*shader
)
8109 if (shader
->scratch_bo
)
8110 si_resource_reference(&shader
->scratch_bo
, NULL
);
8112 si_resource_reference(&shader
->bo
, NULL
);
8114 if (!shader
->is_binary_shared
)
8115 si_shader_binary_clean(&shader
->binary
);
8117 free(shader
->shader_log
);