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 <llvm/Config/llvm-config.h>
27 #include "util/u_memory.h"
28 #include "tgsi/tgsi_strings.h"
29 #include "tgsi/tgsi_from_mesa.h"
31 #include "ac_exp_param.h"
32 #include "ac_shader_util.h"
34 #include "ac_llvm_util.h"
35 #include "si_shader_internal.h"
39 #include "compiler/nir/nir.h"
40 #include "compiler/nir/nir_serialize.h"
42 static const char scratch_rsrc_dword0_symbol
[] =
43 "SCRATCH_RSRC_DWORD0";
45 static const char scratch_rsrc_dword1_symbol
[] =
46 "SCRATCH_RSRC_DWORD1";
48 static void si_llvm_emit_barrier(struct si_shader_context
*ctx
);
50 static void si_dump_shader_key(const struct si_shader
*shader
, FILE *f
);
52 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
53 union si_shader_part_key
*key
);
54 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
55 union si_shader_part_key
*key
);
56 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
57 union si_shader_part_key
*key
);
58 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
59 union si_shader_part_key
*key
);
60 static void si_fix_resource_usage(struct si_screen
*sscreen
,
61 struct si_shader
*shader
);
63 /* Ideally pass the sample mask input to the PS epilog as v14, which
64 * is its usual location, so that the shader doesn't have to add v_mov.
66 #define PS_EPILOG_SAMPLEMASK_MIN_LOC 14
68 static bool llvm_type_is_64bit(struct si_shader_context
*ctx
,
71 if (type
== ctx
->ac
.i64
|| type
== ctx
->ac
.f64
)
77 /** Whether the shader runs as a combination of multiple API shaders */
78 static bool is_multi_part_shader(struct si_shader_context
*ctx
)
80 if (ctx
->screen
->info
.chip_class
<= GFX8
)
83 return ctx
->shader
->key
.as_ls
||
84 ctx
->shader
->key
.as_es
||
85 ctx
->type
== PIPE_SHADER_TESS_CTRL
||
86 ctx
->type
== PIPE_SHADER_GEOMETRY
;
89 /** Whether the shader runs on a merged HW stage (LSHS or ESGS) */
90 static bool is_merged_shader(struct si_shader_context
*ctx
)
92 return ctx
->shader
->key
.as_ngg
|| is_multi_part_shader(ctx
);
96 * Returns a unique index for a per-patch semantic name and index. The index
97 * must be less than 32, so that a 32-bit bitmask of used inputs or outputs
100 unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name
, unsigned index
)
102 switch (semantic_name
) {
103 case TGSI_SEMANTIC_TESSOUTER
:
105 case TGSI_SEMANTIC_TESSINNER
:
107 case TGSI_SEMANTIC_PATCH
:
112 assert(!"invalid semantic name");
118 * Returns a unique index for a semantic name and index. The index must be
119 * less than 64, so that a 64-bit bitmask of used inputs or outputs can be
122 unsigned si_shader_io_get_unique_index(unsigned semantic_name
, unsigned index
,
125 switch (semantic_name
) {
126 case TGSI_SEMANTIC_POSITION
:
128 case TGSI_SEMANTIC_GENERIC
:
129 /* Since some shader stages use the the highest used IO index
130 * to determine the size to allocate for inputs/outputs
131 * (in LDS, tess and GS rings). GENERIC should be placed right
132 * after POSITION to make that size as small as possible.
134 if (index
< SI_MAX_IO_GENERIC
)
137 assert(!"invalid generic index");
139 case TGSI_SEMANTIC_FOG
:
140 return SI_MAX_IO_GENERIC
+ 1;
141 case TGSI_SEMANTIC_COLOR
:
143 return SI_MAX_IO_GENERIC
+ 2 + index
;
144 case TGSI_SEMANTIC_BCOLOR
:
146 /* If it's a varying, COLOR and BCOLOR alias. */
148 return SI_MAX_IO_GENERIC
+ 2 + index
;
150 return SI_MAX_IO_GENERIC
+ 4 + index
;
151 case TGSI_SEMANTIC_TEXCOORD
:
153 return SI_MAX_IO_GENERIC
+ 6 + index
;
155 /* These are rarely used between LS and HS or ES and GS. */
156 case TGSI_SEMANTIC_CLIPDIST
:
158 return SI_MAX_IO_GENERIC
+ 6 + 8 + index
;
159 case TGSI_SEMANTIC_CLIPVERTEX
:
160 return SI_MAX_IO_GENERIC
+ 6 + 8 + 2;
161 case TGSI_SEMANTIC_PSIZE
:
162 return SI_MAX_IO_GENERIC
+ 6 + 8 + 3;
164 /* These can't be written by LS, HS, and ES. */
165 case TGSI_SEMANTIC_LAYER
:
166 return SI_MAX_IO_GENERIC
+ 6 + 8 + 4;
167 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
168 return SI_MAX_IO_GENERIC
+ 6 + 8 + 5;
169 case TGSI_SEMANTIC_PRIMID
:
170 STATIC_ASSERT(SI_MAX_IO_GENERIC
+ 6 + 8 + 6 <= 63);
171 return SI_MAX_IO_GENERIC
+ 6 + 8 + 6;
173 fprintf(stderr
, "invalid semantic name = %u\n", semantic_name
);
174 assert(!"invalid semantic name");
180 * Get the value of a shader input parameter and extract a bitfield.
182 static LLVMValueRef
unpack_llvm_param(struct si_shader_context
*ctx
,
183 LLVMValueRef value
, unsigned rshift
,
186 if (LLVMGetTypeKind(LLVMTypeOf(value
)) == LLVMFloatTypeKind
)
187 value
= ac_to_integer(&ctx
->ac
, value
);
190 value
= LLVMBuildLShr(ctx
->ac
.builder
, value
,
191 LLVMConstInt(ctx
->i32
, rshift
, 0), "");
193 if (rshift
+ bitwidth
< 32) {
194 unsigned mask
= (1 << bitwidth
) - 1;
195 value
= LLVMBuildAnd(ctx
->ac
.builder
, value
,
196 LLVMConstInt(ctx
->i32
, mask
, 0), "");
202 LLVMValueRef
si_unpack_param(struct si_shader_context
*ctx
,
203 struct ac_arg param
, unsigned rshift
,
206 LLVMValueRef value
= ac_get_arg(&ctx
->ac
, param
);
208 return unpack_llvm_param(ctx
, value
, rshift
, bitwidth
);
211 static LLVMValueRef
get_rel_patch_id(struct si_shader_context
*ctx
)
214 case PIPE_SHADER_TESS_CTRL
:
215 return si_unpack_param(ctx
, ctx
->args
.tcs_rel_ids
, 0, 8);
217 case PIPE_SHADER_TESS_EVAL
:
218 return ac_get_arg(&ctx
->ac
, ctx
->tes_rel_patch_id
);
226 /* Tessellation shaders pass outputs to the next shader using LDS.
228 * LS outputs = TCS inputs
229 * TCS outputs = TES inputs
232 * - TCS inputs for patch 0
233 * - TCS inputs for patch 1
234 * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2)
236 * - TCS outputs for patch 0 = get_tcs_out_patch0_offset
237 * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset
238 * - TCS outputs for patch 1
239 * - Per-patch TCS outputs for patch 1
240 * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2)
241 * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2)
244 * All three shaders VS(LS), TCS, TES share the same LDS space.
248 get_tcs_in_patch_stride(struct si_shader_context
*ctx
)
250 return si_unpack_param(ctx
, ctx
->vs_state_bits
, 8, 13);
253 static unsigned get_tcs_out_vertex_dw_stride_constant(struct si_shader_context
*ctx
)
255 assert(ctx
->type
== PIPE_SHADER_TESS_CTRL
);
257 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
258 return util_last_bit64(ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
) * 4;
260 return util_last_bit64(ctx
->shader
->selector
->outputs_written
) * 4;
263 static LLVMValueRef
get_tcs_out_vertex_dw_stride(struct si_shader_context
*ctx
)
265 unsigned stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
267 return LLVMConstInt(ctx
->i32
, stride
, 0);
270 static LLVMValueRef
get_tcs_out_patch_stride(struct si_shader_context
*ctx
)
272 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
273 return si_unpack_param(ctx
, ctx
->tcs_out_lds_layout
, 0, 13);
275 const struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
276 unsigned tcs_out_vertices
= info
->properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
];
277 unsigned vertex_dw_stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
278 unsigned num_patch_outputs
= util_last_bit64(ctx
->shader
->selector
->patch_outputs_written
);
279 unsigned patch_dw_stride
= tcs_out_vertices
* vertex_dw_stride
+
280 num_patch_outputs
* 4;
281 return LLVMConstInt(ctx
->i32
, patch_dw_stride
, 0);
285 get_tcs_out_patch0_offset(struct si_shader_context
*ctx
)
287 return LLVMBuildMul(ctx
->ac
.builder
,
288 si_unpack_param(ctx
, ctx
->tcs_out_lds_offsets
, 0, 16),
289 LLVMConstInt(ctx
->i32
, 4, 0), "");
293 get_tcs_out_patch0_patch_data_offset(struct si_shader_context
*ctx
)
295 return LLVMBuildMul(ctx
->ac
.builder
,
296 si_unpack_param(ctx
, ctx
->tcs_out_lds_offsets
, 16, 16),
297 LLVMConstInt(ctx
->i32
, 4, 0), "");
301 get_tcs_in_current_patch_offset(struct si_shader_context
*ctx
)
303 LLVMValueRef patch_stride
= get_tcs_in_patch_stride(ctx
);
304 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
306 return LLVMBuildMul(ctx
->ac
.builder
, patch_stride
, rel_patch_id
, "");
310 get_tcs_out_current_patch_offset(struct si_shader_context
*ctx
)
312 LLVMValueRef patch0_offset
= get_tcs_out_patch0_offset(ctx
);
313 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
314 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
316 return ac_build_imad(&ctx
->ac
, patch_stride
, rel_patch_id
, patch0_offset
);
320 get_tcs_out_current_patch_data_offset(struct si_shader_context
*ctx
)
322 LLVMValueRef patch0_patch_data_offset
=
323 get_tcs_out_patch0_patch_data_offset(ctx
);
324 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
325 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
327 return ac_build_imad(&ctx
->ac
, patch_stride
, rel_patch_id
, patch0_patch_data_offset
);
330 static LLVMValueRef
get_num_tcs_out_vertices(struct si_shader_context
*ctx
)
332 unsigned tcs_out_vertices
=
333 ctx
->shader
->selector
?
334 ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
] : 0;
336 /* If !tcs_out_vertices, it's either the fixed-func TCS or the TCS epilog. */
337 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&& tcs_out_vertices
)
338 return LLVMConstInt(ctx
->i32
, tcs_out_vertices
, 0);
340 return si_unpack_param(ctx
, ctx
->tcs_offchip_layout
, 6, 6);
343 static LLVMValueRef
get_tcs_in_vertex_dw_stride(struct si_shader_context
*ctx
)
348 case PIPE_SHADER_VERTEX
:
349 stride
= ctx
->shader
->selector
->lshs_vertex_stride
/ 4;
350 return LLVMConstInt(ctx
->i32
, stride
, 0);
352 case PIPE_SHADER_TESS_CTRL
:
353 if (ctx
->screen
->info
.chip_class
>= GFX9
&&
354 ctx
->shader
->is_monolithic
) {
355 stride
= ctx
->shader
->key
.part
.tcs
.ls
->lshs_vertex_stride
/ 4;
356 return LLVMConstInt(ctx
->i32
, stride
, 0);
358 return si_unpack_param(ctx
, ctx
->vs_state_bits
, 24, 8);
366 static LLVMValueRef
unpack_sint16(struct si_shader_context
*ctx
,
367 LLVMValueRef i32
, unsigned index
)
372 return LLVMBuildAShr(ctx
->ac
.builder
, i32
,
373 LLVMConstInt(ctx
->i32
, 16, 0), "");
375 return LLVMBuildSExt(ctx
->ac
.builder
,
376 LLVMBuildTrunc(ctx
->ac
.builder
, i32
,
381 void si_llvm_load_input_vs(
382 struct si_shader_context
*ctx
,
383 unsigned input_index
,
386 const struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
387 unsigned vs_blit_property
= info
->properties
[TGSI_PROPERTY_VS_BLIT_SGPRS_AMD
];
389 if (vs_blit_property
) {
390 LLVMValueRef vertex_id
= ctx
->abi
.vertex_id
;
391 LLVMValueRef sel_x1
= LLVMBuildICmp(ctx
->ac
.builder
,
392 LLVMIntULE
, vertex_id
,
394 /* Use LLVMIntNE, because we have 3 vertices and only
395 * the middle one should use y2.
397 LLVMValueRef sel_y1
= LLVMBuildICmp(ctx
->ac
.builder
,
398 LLVMIntNE
, vertex_id
,
401 unsigned param_vs_blit_inputs
= ctx
->vs_blit_inputs
.arg_index
;
402 if (input_index
== 0) {
404 LLVMValueRef x1y1
= LLVMGetParam(ctx
->main_fn
,
405 param_vs_blit_inputs
);
406 LLVMValueRef x2y2
= LLVMGetParam(ctx
->main_fn
,
407 param_vs_blit_inputs
+ 1);
409 LLVMValueRef x1
= unpack_sint16(ctx
, x1y1
, 0);
410 LLVMValueRef y1
= unpack_sint16(ctx
, x1y1
, 1);
411 LLVMValueRef x2
= unpack_sint16(ctx
, x2y2
, 0);
412 LLVMValueRef y2
= unpack_sint16(ctx
, x2y2
, 1);
414 LLVMValueRef x
= LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
416 LLVMValueRef y
= LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
419 out
[0] = LLVMBuildSIToFP(ctx
->ac
.builder
, x
, ctx
->f32
, "");
420 out
[1] = LLVMBuildSIToFP(ctx
->ac
.builder
, y
, ctx
->f32
, "");
421 out
[2] = LLVMGetParam(ctx
->main_fn
,
422 param_vs_blit_inputs
+ 2);
423 out
[3] = ctx
->ac
.f32_1
;
427 /* Color or texture coordinates: */
428 assert(input_index
== 1);
430 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
431 for (int i
= 0; i
< 4; i
++) {
432 out
[i
] = LLVMGetParam(ctx
->main_fn
,
433 param_vs_blit_inputs
+ 3 + i
);
436 assert(vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
);
437 LLVMValueRef x1
= LLVMGetParam(ctx
->main_fn
,
438 param_vs_blit_inputs
+ 3);
439 LLVMValueRef y1
= LLVMGetParam(ctx
->main_fn
,
440 param_vs_blit_inputs
+ 4);
441 LLVMValueRef x2
= LLVMGetParam(ctx
->main_fn
,
442 param_vs_blit_inputs
+ 5);
443 LLVMValueRef y2
= LLVMGetParam(ctx
->main_fn
,
444 param_vs_blit_inputs
+ 6);
446 out
[0] = LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
448 out
[1] = LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
450 out
[2] = LLVMGetParam(ctx
->main_fn
,
451 param_vs_blit_inputs
+ 7);
452 out
[3] = LLVMGetParam(ctx
->main_fn
,
453 param_vs_blit_inputs
+ 8);
458 unsigned num_vbos_in_user_sgprs
= ctx
->shader
->selector
->num_vbos_in_user_sgprs
;
459 union si_vs_fix_fetch fix_fetch
;
460 LLVMValueRef vb_desc
;
461 LLVMValueRef vertex_index
;
464 if (input_index
< num_vbos_in_user_sgprs
) {
465 vb_desc
= ac_get_arg(&ctx
->ac
, ctx
->vb_descriptors
[input_index
]);
467 unsigned index
= input_index
- num_vbos_in_user_sgprs
;
468 vb_desc
= ac_build_load_to_sgpr(&ctx
->ac
,
469 ac_get_arg(&ctx
->ac
, ctx
->vertex_buffers
),
470 LLVMConstInt(ctx
->i32
, index
, 0));
473 vertex_index
= LLVMGetParam(ctx
->main_fn
,
474 ctx
->vertex_index0
.arg_index
+
477 /* Use the open-coded implementation for all loads of doubles and
478 * of dword-sized data that needs fixups. We need to insert conversion
479 * code anyway, and the amd/common code does it for us.
481 * Note: On LLVM <= 8, we can only open-code formats with
482 * channel size >= 4 bytes.
484 bool opencode
= ctx
->shader
->key
.mono
.vs_fetch_opencode
& (1 << input_index
);
485 fix_fetch
.bits
= ctx
->shader
->key
.mono
.vs_fix_fetch
[input_index
].bits
;
487 (fix_fetch
.u
.log_size
== 3 && fix_fetch
.u
.format
== AC_FETCH_FORMAT_FLOAT
) ||
488 (fix_fetch
.u
.log_size
== 2)) {
489 tmp
= ac_build_opencoded_load_format(
490 &ctx
->ac
, fix_fetch
.u
.log_size
, fix_fetch
.u
.num_channels_m1
+ 1,
491 fix_fetch
.u
.format
, fix_fetch
.u
.reverse
, !opencode
,
492 vb_desc
, vertex_index
, ctx
->ac
.i32_0
, ctx
->ac
.i32_0
, 0, true);
493 for (unsigned i
= 0; i
< 4; ++i
)
494 out
[i
] = LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, LLVMConstInt(ctx
->i32
, i
, false), "");
498 /* Do multiple loads for special formats. */
499 unsigned required_channels
= util_last_bit(info
->input_usage_mask
[input_index
]);
500 LLVMValueRef fetches
[4];
501 unsigned num_fetches
;
502 unsigned fetch_stride
;
503 unsigned channels_per_fetch
;
505 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2) {
506 num_fetches
= MIN2(required_channels
, 3);
507 fetch_stride
= 1 << fix_fetch
.u
.log_size
;
508 channels_per_fetch
= 1;
512 channels_per_fetch
= required_channels
;
515 for (unsigned i
= 0; i
< num_fetches
; ++i
) {
516 LLVMValueRef voffset
= LLVMConstInt(ctx
->i32
, fetch_stride
* i
, 0);
517 fetches
[i
] = ac_build_buffer_load_format(&ctx
->ac
, vb_desc
, vertex_index
, voffset
,
518 channels_per_fetch
, 0, true);
521 if (num_fetches
== 1 && channels_per_fetch
> 1) {
522 LLVMValueRef fetch
= fetches
[0];
523 for (unsigned i
= 0; i
< channels_per_fetch
; ++i
) {
524 tmp
= LLVMConstInt(ctx
->i32
, i
, false);
525 fetches
[i
] = LLVMBuildExtractElement(
526 ctx
->ac
.builder
, fetch
, tmp
, "");
528 num_fetches
= channels_per_fetch
;
529 channels_per_fetch
= 1;
532 for (unsigned i
= num_fetches
; i
< 4; ++i
)
533 fetches
[i
] = LLVMGetUndef(ctx
->f32
);
535 if (fix_fetch
.u
.log_size
<= 1 && fix_fetch
.u
.num_channels_m1
== 2 &&
536 required_channels
== 4) {
537 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_UINT
|| fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
)
538 fetches
[3] = ctx
->ac
.i32_1
;
540 fetches
[3] = ctx
->ac
.f32_1
;
541 } else if (fix_fetch
.u
.log_size
== 3 &&
542 (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
||
543 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
||
544 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SINT
) &&
545 required_channels
== 4) {
546 /* For 2_10_10_10, the hardware returns an unsigned value;
547 * convert it to a signed one.
549 LLVMValueRef tmp
= fetches
[3];
550 LLVMValueRef c30
= LLVMConstInt(ctx
->i32
, 30, 0);
552 /* First, recover the sign-extended signed integer value. */
553 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
)
554 tmp
= LLVMBuildFPToUI(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
556 tmp
= ac_to_integer(&ctx
->ac
, tmp
);
558 /* For the integer-like cases, do a natural sign extension.
560 * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0
561 * and happen to contain 0, 1, 2, 3 as the two LSBs of the
564 tmp
= LLVMBuildShl(ctx
->ac
.builder
, tmp
,
565 fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
?
566 LLVMConstInt(ctx
->i32
, 7, 0) : c30
, "");
567 tmp
= LLVMBuildAShr(ctx
->ac
.builder
, tmp
, c30
, "");
569 /* Convert back to the right type. */
570 if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SNORM
) {
572 LLVMValueRef neg_one
= LLVMConstReal(ctx
->f32
, -1.0);
573 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
574 clamp
= LLVMBuildFCmp(ctx
->ac
.builder
, LLVMRealULT
, tmp
, neg_one
, "");
575 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, clamp
, neg_one
, tmp
, "");
576 } else if (fix_fetch
.u
.format
== AC_FETCH_FORMAT_SSCALED
) {
577 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
583 for (unsigned i
= 0; i
< 4; ++i
)
584 out
[i
] = ac_to_float(&ctx
->ac
, fetches
[i
]);
587 LLVMValueRef
si_get_primitive_id(struct si_shader_context
*ctx
,
594 case PIPE_SHADER_VERTEX
:
595 return ac_get_arg(&ctx
->ac
, ctx
->vs_prim_id
);
596 case PIPE_SHADER_TESS_CTRL
:
597 return ac_get_arg(&ctx
->ac
, ctx
->args
.tcs_patch_id
);
598 case PIPE_SHADER_TESS_EVAL
:
599 return ac_get_arg(&ctx
->ac
, ctx
->args
.tes_patch_id
);
600 case PIPE_SHADER_GEOMETRY
:
601 return ac_get_arg(&ctx
->ac
, ctx
->args
.gs_prim_id
);
608 static LLVMValueRef
get_dw_address_from_generic_indices(struct si_shader_context
*ctx
,
609 LLVMValueRef vertex_dw_stride
,
610 LLVMValueRef base_addr
,
611 LLVMValueRef vertex_index
,
612 LLVMValueRef param_index
,
613 ubyte name
, ubyte index
)
615 if (vertex_dw_stride
) {
616 base_addr
= ac_build_imad(&ctx
->ac
, vertex_index
,
617 vertex_dw_stride
, base_addr
);
621 base_addr
= ac_build_imad(&ctx
->ac
, param_index
,
622 LLVMConstInt(ctx
->i32
, 4, 0), base_addr
);
625 int param
= name
== TGSI_SEMANTIC_PATCH
||
626 name
== TGSI_SEMANTIC_TESSINNER
||
627 name
== TGSI_SEMANTIC_TESSOUTER
?
628 si_shader_io_get_unique_index_patch(name
, index
) :
629 si_shader_io_get_unique_index(name
, index
, false);
631 /* Add the base address of the element. */
632 return LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
633 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
636 /* The offchip buffer layout for TCS->TES is
638 * - attribute 0 of patch 0 vertex 0
639 * - attribute 0 of patch 0 vertex 1
640 * - attribute 0 of patch 0 vertex 2
642 * - attribute 0 of patch 1 vertex 0
643 * - attribute 0 of patch 1 vertex 1
645 * - attribute 1 of patch 0 vertex 0
646 * - attribute 1 of patch 0 vertex 1
648 * - per patch attribute 0 of patch 0
649 * - per patch attribute 0 of patch 1
652 * Note that every attribute has 4 components.
654 static LLVMValueRef
get_tcs_tes_buffer_address(struct si_shader_context
*ctx
,
655 LLVMValueRef rel_patch_id
,
656 LLVMValueRef vertex_index
,
657 LLVMValueRef param_index
)
659 LLVMValueRef base_addr
, vertices_per_patch
, num_patches
, total_vertices
;
660 LLVMValueRef param_stride
, constant16
;
662 vertices_per_patch
= get_num_tcs_out_vertices(ctx
);
663 num_patches
= si_unpack_param(ctx
, ctx
->tcs_offchip_layout
, 0, 6);
664 total_vertices
= LLVMBuildMul(ctx
->ac
.builder
, vertices_per_patch
,
667 constant16
= LLVMConstInt(ctx
->i32
, 16, 0);
669 base_addr
= ac_build_imad(&ctx
->ac
, rel_patch_id
,
670 vertices_per_patch
, vertex_index
);
671 param_stride
= total_vertices
;
673 base_addr
= rel_patch_id
;
674 param_stride
= num_patches
;
677 base_addr
= ac_build_imad(&ctx
->ac
, param_index
, param_stride
, base_addr
);
678 base_addr
= LLVMBuildMul(ctx
->ac
.builder
, base_addr
, constant16
, "");
681 LLVMValueRef patch_data_offset
=
682 si_unpack_param(ctx
, ctx
->tcs_offchip_layout
, 12, 20);
684 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
685 patch_data_offset
, "");
690 static LLVMValueRef
get_tcs_tes_buffer_address_from_generic_indices(
691 struct si_shader_context
*ctx
,
692 LLVMValueRef vertex_index
,
693 LLVMValueRef param_index
,
694 ubyte name
, ubyte index
)
696 unsigned param_index_base
;
698 param_index_base
= name
== TGSI_SEMANTIC_PATCH
||
699 name
== TGSI_SEMANTIC_TESSINNER
||
700 name
== TGSI_SEMANTIC_TESSOUTER
?
701 si_shader_io_get_unique_index_patch(name
, index
) :
702 si_shader_io_get_unique_index(name
, index
, false);
705 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
706 LLVMConstInt(ctx
->i32
, param_index_base
, 0),
709 param_index
= LLVMConstInt(ctx
->i32
, param_index_base
, 0);
712 return get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
),
713 vertex_index
, param_index
);
716 static LLVMValueRef
si_build_gather_64bit(struct si_shader_context
*ctx
,
721 LLVMValueRef values
[2] = {
722 ac_to_integer(&ctx
->ac
, val1
),
723 ac_to_integer(&ctx
->ac
, val2
),
725 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, 2);
726 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
729 static LLVMValueRef
buffer_load(struct si_shader_context
*ctx
,
730 LLVMTypeRef type
, unsigned swizzle
,
731 LLVMValueRef buffer
, LLVMValueRef offset
,
732 LLVMValueRef base
, bool can_speculate
)
734 LLVMValueRef value
, value2
;
735 LLVMTypeRef vec_type
= LLVMVectorType(type
, 4);
738 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
739 0, ac_glc
, can_speculate
, false);
741 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
744 if (!llvm_type_is_64bit(ctx
, type
)) {
745 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
746 0, ac_glc
, can_speculate
, false);
748 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
749 return LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
750 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
753 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
754 swizzle
* 4, ac_glc
, can_speculate
, false);
756 value2
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
757 swizzle
* 4 + 4, ac_glc
, can_speculate
, false);
759 return si_build_gather_64bit(ctx
, type
, value
, value2
);
763 * Load from LSHS LDS storage.
765 * \param type output value type
766 * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4
767 * \param dw_addr address in dwords
769 static LLVMValueRef
lshs_lds_load(struct si_shader_context
*ctx
,
770 LLVMTypeRef type
, unsigned swizzle
,
771 LLVMValueRef dw_addr
)
776 LLVMValueRef values
[4];
778 for (unsigned chan
= 0; chan
< 4; chan
++)
779 values
[chan
] = lshs_lds_load(ctx
, type
, chan
, dw_addr
);
781 return ac_build_gather_values(&ctx
->ac
, values
, 4);
784 /* Split 64-bit loads. */
785 if (llvm_type_is_64bit(ctx
, type
)) {
788 lo
= lshs_lds_load(ctx
, ctx
->i32
, swizzle
, dw_addr
);
789 hi
= lshs_lds_load(ctx
, ctx
->i32
, swizzle
+ 1, dw_addr
);
790 return si_build_gather_64bit(ctx
, type
, lo
, hi
);
793 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
794 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
796 value
= ac_lds_load(&ctx
->ac
, dw_addr
);
798 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
802 * Store to LSHS LDS storage.
804 * \param swizzle offset (typically 0..3)
805 * \param dw_addr address in dwords
806 * \param value value to store
808 static void lshs_lds_store(struct si_shader_context
*ctx
,
809 unsigned dw_offset_imm
, LLVMValueRef dw_addr
,
812 dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, dw_addr
,
813 LLVMConstInt(ctx
->i32
, dw_offset_imm
, 0), "");
815 ac_lds_store(&ctx
->ac
, dw_addr
, value
);
820 TESS_OFFCHIP_RING_TCS
,
821 TESS_OFFCHIP_RING_TES
,
824 static LLVMValueRef
get_tess_ring_descriptor(struct si_shader_context
*ctx
,
825 enum si_tess_ring ring
)
827 LLVMBuilderRef builder
= ctx
->ac
.builder
;
828 LLVMValueRef addr
= ac_get_arg(&ctx
->ac
,
829 ring
== TESS_OFFCHIP_RING_TES
?
830 ctx
->tes_offchip_addr
:
831 ctx
->tcs_out_lds_layout
);
833 /* TCS only receives high 13 bits of the address. */
834 if (ring
== TESS_OFFCHIP_RING_TCS
|| ring
== TCS_FACTOR_RING
) {
835 addr
= LLVMBuildAnd(builder
, addr
,
836 LLVMConstInt(ctx
->i32
, 0xfff80000, 0), "");
839 if (ring
== TCS_FACTOR_RING
) {
840 unsigned tf_offset
= ctx
->screen
->tess_offchip_ring_size
;
841 addr
= LLVMBuildAdd(builder
, addr
,
842 LLVMConstInt(ctx
->i32
, tf_offset
, 0), "");
845 uint32_t rsrc3
= S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
846 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
847 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
848 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
);
850 if (ctx
->screen
->info
.chip_class
>= GFX10
)
851 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
852 S_008F0C_OOB_SELECT(V_008F0C_OOB_SELECT_RAW
) |
853 S_008F0C_RESOURCE_LEVEL(1);
855 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
856 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
);
858 LLVMValueRef desc
[4];
860 desc
[1] = LLVMConstInt(ctx
->i32
,
861 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
862 desc
[2] = LLVMConstInt(ctx
->i32
, 0xffffffff, 0);
863 desc
[3] = LLVMConstInt(ctx
->i32
, rsrc3
, false);
865 return ac_build_gather_values(&ctx
->ac
, desc
, 4);
868 static LLVMValueRef
si_nir_load_tcs_varyings(struct ac_shader_abi
*abi
,
870 LLVMValueRef vertex_index
,
871 LLVMValueRef param_index
,
872 unsigned const_index
,
874 unsigned driver_location
,
876 unsigned num_components
,
881 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
882 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
883 LLVMValueRef dw_addr
, stride
;
886 driver_location
= driver_location
/ 4;
889 name
= info
->input_semantic_name
[driver_location
];
890 index
= info
->input_semantic_index
[driver_location
];
892 name
= info
->output_semantic_name
[driver_location
];
893 index
= info
->output_semantic_index
[driver_location
];
896 assert((name
== TGSI_SEMANTIC_PATCH
||
897 name
== TGSI_SEMANTIC_TESSINNER
||
898 name
== TGSI_SEMANTIC_TESSOUTER
) == is_patch
);
901 stride
= get_tcs_in_vertex_dw_stride(ctx
);
902 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
906 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
908 stride
= get_tcs_out_vertex_dw_stride(ctx
);
909 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
914 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
917 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
918 vertex_index
, param_index
,
921 LLVMValueRef value
[4];
922 for (unsigned i
= 0; i
< num_components
; i
++) {
924 if (llvm_type_is_64bit(ctx
, type
))
928 value
[i
+ component
] = lshs_lds_load(ctx
, type
, offset
, dw_addr
);
931 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
934 LLVMValueRef
si_nir_load_input_tes(struct ac_shader_abi
*abi
,
936 LLVMValueRef vertex_index
,
937 LLVMValueRef param_index
,
938 unsigned const_index
,
940 unsigned driver_location
,
942 unsigned num_components
,
947 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
948 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
949 LLVMValueRef base
, addr
;
951 driver_location
= driver_location
/ 4;
952 ubyte name
= info
->input_semantic_name
[driver_location
];
953 ubyte index
= info
->input_semantic_index
[driver_location
];
955 assert((name
== TGSI_SEMANTIC_PATCH
||
956 name
== TGSI_SEMANTIC_TESSINNER
||
957 name
== TGSI_SEMANTIC_TESSOUTER
) == is_patch
);
959 base
= ac_get_arg(&ctx
->ac
, ctx
->tcs_offchip_offset
);
962 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
965 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
969 /* TODO: This will generate rather ordinary llvm code, although it
970 * should be easy for the optimiser to fix up. In future we might want
971 * to refactor buffer_load().
973 LLVMValueRef value
[4];
974 for (unsigned i
= 0; i
< num_components
; i
++) {
976 if (llvm_type_is_64bit(ctx
, type
)) {
979 ubyte name
= info
->input_semantic_name
[driver_location
+ 1];
980 ubyte index
= info
->input_semantic_index
[driver_location
+ 1];
981 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
991 value
[i
+ component
] = buffer_load(ctx
, type
, offset
,
992 ctx
->tess_offchip_ring
, base
, addr
, true);
995 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
998 static void si_nir_store_output_tcs(struct ac_shader_abi
*abi
,
999 const struct nir_variable
*var
,
1000 LLVMValueRef vertex_index
,
1001 LLVMValueRef param_index
,
1002 unsigned const_index
,
1006 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1007 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
1008 const unsigned component
= var
->data
.location_frac
;
1009 unsigned driver_location
= var
->data
.driver_location
;
1010 LLVMValueRef dw_addr
, stride
;
1011 LLVMValueRef buffer
, base
, addr
;
1012 LLVMValueRef values
[8];
1013 bool skip_lds_store
;
1014 bool is_tess_factor
= false, is_tess_inner
= false;
1016 driver_location
= driver_location
/ 4;
1017 ubyte name
= info
->output_semantic_name
[driver_location
];
1018 ubyte index
= info
->output_semantic_index
[driver_location
];
1020 bool is_const
= !param_index
;
1022 param_index
= LLVMConstInt(ctx
->i32
, const_index
, 0);
1024 const bool is_patch
= var
->data
.patch
||
1025 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
1026 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
1028 assert((name
== TGSI_SEMANTIC_PATCH
||
1029 name
== TGSI_SEMANTIC_TESSINNER
||
1030 name
== TGSI_SEMANTIC_TESSOUTER
) == is_patch
);
1033 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1034 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1035 dw_addr
= get_dw_address_from_generic_indices(ctx
, stride
, dw_addr
,
1036 vertex_index
, param_index
,
1039 skip_lds_store
= !info
->reads_pervertex_outputs
;
1041 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1042 dw_addr
= get_dw_address_from_generic_indices(ctx
, NULL
, dw_addr
,
1043 vertex_index
, param_index
,
1046 skip_lds_store
= !info
->reads_perpatch_outputs
;
1048 if (is_const
&& const_index
== 0) {
1049 int name
= info
->output_semantic_name
[driver_location
];
1051 /* Always write tess factors into LDS for the TCS epilog. */
1052 if (name
== TGSI_SEMANTIC_TESSINNER
||
1053 name
== TGSI_SEMANTIC_TESSOUTER
) {
1054 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1055 skip_lds_store
= !info
->reads_tessfactor_outputs
&&
1056 ctx
->shader
->selector
->info
.tessfactors_are_def_in_all_invocs
;
1057 is_tess_factor
= true;
1058 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1063 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
1065 base
= ac_get_arg(&ctx
->ac
, ctx
->tcs_offchip_offset
);
1067 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
, vertex_index
,
1068 param_index
, name
, index
);
1070 for (unsigned chan
= component
; chan
< 8; chan
++) {
1071 if (!(writemask
& (1 << chan
)))
1073 LLVMValueRef value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- component
);
1075 unsigned buffer_store_offset
= chan
% 4;
1077 ubyte name
= info
->output_semantic_name
[driver_location
+ 1];
1078 ubyte index
= info
->output_semantic_index
[driver_location
+ 1];
1079 addr
= get_tcs_tes_buffer_address_from_generic_indices(ctx
,
1085 /* Skip LDS stores if there is no LDS read of this output. */
1086 if (!skip_lds_store
)
1087 lshs_lds_store(ctx
, chan
, dw_addr
, value
);
1089 value
= ac_to_integer(&ctx
->ac
, value
);
1090 values
[chan
] = value
;
1092 if (writemask
!= 0xF && !is_tess_factor
) {
1093 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1095 4 * buffer_store_offset
,
1099 /* Write tess factors into VGPRs for the epilog. */
1100 if (is_tess_factor
&&
1101 ctx
->shader
->selector
->info
.tessfactors_are_def_in_all_invocs
) {
1102 if (!is_tess_inner
) {
1103 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1104 ctx
->invoc0_tess_factors
[chan
]);
1105 } else if (chan
< 2) {
1106 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1107 ctx
->invoc0_tess_factors
[4 + chan
]);
1112 if (writemask
== 0xF && !is_tess_factor
) {
1113 LLVMValueRef value
= ac_build_gather_values(&ctx
->ac
,
1115 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, addr
,
1120 static LLVMValueRef
si_llvm_load_input_gs(struct ac_shader_abi
*abi
,
1121 unsigned input_index
,
1122 unsigned vtx_offset_param
,
1126 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1127 struct si_shader
*shader
= ctx
->shader
;
1128 LLVMValueRef vtx_offset
, soffset
;
1129 struct si_shader_info
*info
= &shader
->selector
->info
;
1130 unsigned semantic_name
= info
->input_semantic_name
[input_index
];
1131 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1135 param
= si_shader_io_get_unique_index(semantic_name
, semantic_index
, false);
1137 /* GFX9 has the ESGS ring in LDS. */
1138 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
1139 unsigned index
= vtx_offset_param
;
1141 switch (index
/ 2) {
1143 vtx_offset
= si_unpack_param(ctx
, ctx
->gs_vtx01_offset
,
1144 index
% 2 ? 16 : 0, 16);
1147 vtx_offset
= si_unpack_param(ctx
, ctx
->gs_vtx23_offset
,
1148 index
% 2 ? 16 : 0, 16);
1151 vtx_offset
= si_unpack_param(ctx
, ctx
->gs_vtx45_offset
,
1152 index
% 2 ? 16 : 0, 16);
1159 unsigned offset
= param
* 4 + swizzle
;
1160 vtx_offset
= LLVMBuildAdd(ctx
->ac
.builder
, vtx_offset
,
1161 LLVMConstInt(ctx
->i32
, offset
, false), "");
1163 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->esgs_ring
, vtx_offset
);
1164 LLVMValueRef value
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1165 if (llvm_type_is_64bit(ctx
, type
)) {
1166 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
,
1167 &ctx
->ac
.i32_1
, 1, "");
1168 LLVMValueRef values
[2] = {
1170 LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "")
1172 value
= ac_build_gather_values(&ctx
->ac
, values
, 2);
1174 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1177 /* GFX6: input load from the ESGS ring in memory. */
1178 if (swizzle
== ~0) {
1179 LLVMValueRef values
[4];
1181 for (chan
= 0; chan
< 4; chan
++) {
1182 values
[chan
] = si_llvm_load_input_gs(abi
, input_index
, vtx_offset_param
,
1185 return ac_build_gather_values(&ctx
->ac
, values
, 4);
1188 /* Get the vertex offset parameter on GFX6. */
1189 LLVMValueRef gs_vtx_offset
= ac_get_arg(&ctx
->ac
,
1190 ctx
->gs_vtx_offset
[vtx_offset_param
]);
1192 vtx_offset
= LLVMBuildMul(ctx
->ac
.builder
, gs_vtx_offset
,
1193 LLVMConstInt(ctx
->i32
, 4, 0), "");
1195 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
) * 256, 0);
1197 value
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1, ctx
->i32_0
,
1198 vtx_offset
, soffset
, 0, ac_glc
, true, false);
1199 if (llvm_type_is_64bit(ctx
, type
)) {
1200 LLVMValueRef value2
;
1201 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
+ 1) * 256, 0);
1203 value2
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1,
1204 ctx
->i32_0
, vtx_offset
, soffset
,
1205 0, ac_glc
, true, false);
1206 return si_build_gather_64bit(ctx
, type
, value
, value2
);
1208 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, type
, "");
1211 static LLVMValueRef
si_nir_load_input_gs(struct ac_shader_abi
*abi
,
1213 unsigned driver_location
,
1215 unsigned num_components
,
1216 unsigned vertex_index
,
1217 unsigned const_index
,
1220 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1222 LLVMValueRef value
[4];
1223 for (unsigned i
= 0; i
< num_components
; i
++) {
1224 unsigned offset
= i
;
1225 if (llvm_type_is_64bit(ctx
, type
))
1228 offset
+= component
;
1229 value
[i
+ component
] = si_llvm_load_input_gs(&ctx
->abi
, driver_location
/ 4 + const_index
,
1230 vertex_index
, type
, offset
);
1233 return ac_build_varying_gather_values(&ctx
->ac
, value
, num_components
, component
);
1236 static LLVMValueRef
si_build_fs_interp(struct si_shader_context
*ctx
,
1237 unsigned attr_index
, unsigned chan
,
1238 LLVMValueRef prim_mask
,
1239 LLVMValueRef i
, LLVMValueRef j
)
1242 return ac_build_fs_interp(&ctx
->ac
,
1243 LLVMConstInt(ctx
->i32
, chan
, 0),
1244 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1247 return ac_build_fs_interp_mov(&ctx
->ac
,
1248 LLVMConstInt(ctx
->i32
, 2, 0), /* P0 */
1249 LLVMConstInt(ctx
->i32
, chan
, 0),
1250 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1255 * Interpolate a fragment shader input.
1257 * @param ctx context
1258 * @param input_index index of the input in hardware
1259 * @param semantic_name TGSI_SEMANTIC_*
1260 * @param semantic_index semantic index
1261 * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset)
1262 * @param colors_read_mask color components read (4 bits for each color, 8 bits in total)
1263 * @param interp_param interpolation weights (i,j)
1264 * @param prim_mask SI_PARAM_PRIM_MASK
1265 * @param face SI_PARAM_FRONT_FACE
1266 * @param result the return value (4 components)
1268 static void interp_fs_color(struct si_shader_context
*ctx
,
1269 unsigned input_index
,
1270 unsigned semantic_index
,
1271 unsigned num_interp_inputs
,
1272 unsigned colors_read_mask
,
1273 LLVMValueRef interp_param
,
1274 LLVMValueRef prim_mask
,
1276 LLVMValueRef result
[4])
1278 LLVMValueRef i
= NULL
, j
= NULL
;
1281 /* fs.constant returns the param from the middle vertex, so it's not
1282 * really useful for flat shading. It's meant to be used for custom
1283 * interpolation (but the intrinsic can't fetch from the other two
1286 * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state
1287 * to do the right thing. The only reason we use fs.constant is that
1288 * fs.interp cannot be used on integers, because they can be equal
1291 * When interp is false we will use fs.constant or for newer llvm,
1292 * amdgcn.interp.mov.
1294 bool interp
= interp_param
!= NULL
;
1297 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
,
1298 LLVMVectorType(ctx
->f32
, 2), "");
1300 i
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1302 j
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1306 if (ctx
->shader
->key
.part
.ps
.prolog
.color_two_side
) {
1307 LLVMValueRef is_face_positive
;
1309 /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1",
1310 * otherwise it's at offset "num_inputs".
1312 unsigned back_attr_offset
= num_interp_inputs
;
1313 if (semantic_index
== 1 && colors_read_mask
& 0xf)
1314 back_attr_offset
+= 1;
1316 is_face_positive
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
1317 face
, ctx
->i32_0
, "");
1319 for (chan
= 0; chan
< 4; chan
++) {
1320 LLVMValueRef front
, back
;
1322 front
= si_build_fs_interp(ctx
,
1325 back
= si_build_fs_interp(ctx
,
1326 back_attr_offset
, chan
,
1329 result
[chan
] = LLVMBuildSelect(ctx
->ac
.builder
,
1336 for (chan
= 0; chan
< 4; chan
++) {
1337 result
[chan
] = si_build_fs_interp(ctx
,
1344 LLVMValueRef
si_get_sample_id(struct si_shader_context
*ctx
)
1346 return si_unpack_param(ctx
, ctx
->args
.ancillary
, 8, 4);
1349 static LLVMValueRef
get_base_vertex(struct ac_shader_abi
*abi
)
1351 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1353 /* For non-indexed draws, the base vertex set by the driver
1354 * (for direct draws) or the CP (for indirect draws) is the
1355 * first vertex ID, but GLSL expects 0 to be returned.
1357 LLVMValueRef vs_state
= ac_get_arg(&ctx
->ac
,
1358 ctx
->vs_state_bits
);
1359 LLVMValueRef indexed
;
1361 indexed
= LLVMBuildLShr(ctx
->ac
.builder
, vs_state
, ctx
->i32_1
, "");
1362 indexed
= LLVMBuildTrunc(ctx
->ac
.builder
, indexed
, ctx
->i1
, "");
1364 return LLVMBuildSelect(ctx
->ac
.builder
, indexed
,
1365 ac_get_arg(&ctx
->ac
, ctx
->args
.base_vertex
),
1369 static LLVMValueRef
get_block_size(struct ac_shader_abi
*abi
)
1371 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1373 LLVMValueRef values
[3];
1374 LLVMValueRef result
;
1376 unsigned *properties
= ctx
->shader
->selector
->info
.properties
;
1378 if (properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] != 0) {
1379 unsigned sizes
[3] = {
1380 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
],
1381 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
],
1382 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
]
1385 for (i
= 0; i
< 3; ++i
)
1386 values
[i
] = LLVMConstInt(ctx
->i32
, sizes
[i
], 0);
1388 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
1390 result
= ac_get_arg(&ctx
->ac
, ctx
->block_size
);
1397 * Load a dword from a constant buffer.
1399 static LLVMValueRef
buffer_load_const(struct si_shader_context
*ctx
,
1400 LLVMValueRef resource
,
1401 LLVMValueRef offset
)
1403 return ac_build_buffer_load(&ctx
->ac
, resource
, 1, NULL
, offset
, NULL
,
1407 static LLVMValueRef
load_sample_position(struct ac_shader_abi
*abi
, LLVMValueRef sample_id
)
1409 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1410 LLVMValueRef desc
= ac_get_arg(&ctx
->ac
, ctx
->rw_buffers
);
1411 LLVMValueRef buf_index
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_SAMPLE_POSITIONS
, 0);
1412 LLVMValueRef resource
= ac_build_load_to_sgpr(&ctx
->ac
, desc
, buf_index
);
1414 /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */
1415 LLVMValueRef offset0
= LLVMBuildMul(ctx
->ac
.builder
, sample_id
, LLVMConstInt(ctx
->i32
, 8, 0), "");
1416 LLVMValueRef offset1
= LLVMBuildAdd(ctx
->ac
.builder
, offset0
, LLVMConstInt(ctx
->i32
, 4, 0), "");
1418 LLVMValueRef pos
[4] = {
1419 buffer_load_const(ctx
, resource
, offset0
),
1420 buffer_load_const(ctx
, resource
, offset1
),
1421 LLVMConstReal(ctx
->f32
, 0),
1422 LLVMConstReal(ctx
->f32
, 0)
1425 return ac_build_gather_values(&ctx
->ac
, pos
, 4);
1428 static LLVMValueRef
load_sample_mask_in(struct ac_shader_abi
*abi
)
1430 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1431 return ac_to_integer(&ctx
->ac
, ac_get_arg(&ctx
->ac
, ctx
->args
.sample_coverage
));
1434 static LLVMValueRef
si_load_tess_coord(struct ac_shader_abi
*abi
)
1436 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1437 LLVMValueRef coord
[4] = {
1438 ac_get_arg(&ctx
->ac
, ctx
->tes_u
),
1439 ac_get_arg(&ctx
->ac
, ctx
->tes_v
),
1444 /* For triangles, the vector should be (u, v, 1-u-v). */
1445 if (ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TES_PRIM_MODE
] ==
1446 PIPE_PRIM_TRIANGLES
) {
1447 coord
[2] = LLVMBuildFSub(ctx
->ac
.builder
, ctx
->ac
.f32_1
,
1448 LLVMBuildFAdd(ctx
->ac
.builder
,
1449 coord
[0], coord
[1], ""), "");
1451 return ac_build_gather_values(&ctx
->ac
, coord
, 4);
1454 static LLVMValueRef
load_tess_level(struct si_shader_context
*ctx
,
1455 unsigned semantic_name
)
1457 LLVMValueRef base
, addr
;
1459 int param
= si_shader_io_get_unique_index_patch(semantic_name
, 0);
1461 base
= ac_get_arg(&ctx
->ac
, ctx
->tcs_offchip_offset
);
1462 addr
= get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
), NULL
,
1463 LLVMConstInt(ctx
->i32
, param
, 0));
1465 return buffer_load(ctx
, ctx
->f32
,
1466 ~0, ctx
->tess_offchip_ring
, base
, addr
, true);
1470 static LLVMValueRef
load_tess_level_default(struct si_shader_context
*ctx
,
1471 unsigned semantic_name
)
1473 LLVMValueRef buf
, slot
, val
[4];
1476 slot
= LLVMConstInt(ctx
->i32
, SI_HS_CONST_DEFAULT_TESS_LEVELS
, 0);
1477 buf
= ac_get_arg(&ctx
->ac
, ctx
->rw_buffers
);
1478 buf
= ac_build_load_to_sgpr(&ctx
->ac
, buf
, slot
);
1479 offset
= semantic_name
== TGSI_SEMANTIC_TESS_DEFAULT_INNER_LEVEL
? 4 : 0;
1481 for (i
= 0; i
< 4; i
++)
1482 val
[i
] = buffer_load_const(ctx
, buf
,
1483 LLVMConstInt(ctx
->i32
, (offset
+ i
) * 4, 0));
1484 return ac_build_gather_values(&ctx
->ac
, val
, 4);
1487 static LLVMValueRef
si_load_tess_level(struct ac_shader_abi
*abi
,
1488 unsigned varying_id
,
1489 bool load_default_state
)
1491 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1492 unsigned semantic_name
;
1494 if (load_default_state
) {
1495 switch (varying_id
) {
1496 case VARYING_SLOT_TESS_LEVEL_INNER
:
1497 semantic_name
= TGSI_SEMANTIC_TESS_DEFAULT_INNER_LEVEL
;
1499 case VARYING_SLOT_TESS_LEVEL_OUTER
:
1500 semantic_name
= TGSI_SEMANTIC_TESS_DEFAULT_OUTER_LEVEL
;
1503 unreachable("unknown tess level");
1505 return load_tess_level_default(ctx
, semantic_name
);
1508 switch (varying_id
) {
1509 case VARYING_SLOT_TESS_LEVEL_INNER
:
1510 semantic_name
= TGSI_SEMANTIC_TESSINNER
;
1512 case VARYING_SLOT_TESS_LEVEL_OUTER
:
1513 semantic_name
= TGSI_SEMANTIC_TESSOUTER
;
1516 unreachable("unknown tess level");
1519 return load_tess_level(ctx
, semantic_name
);
1523 static LLVMValueRef
si_load_patch_vertices_in(struct ac_shader_abi
*abi
)
1525 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1526 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
1527 return si_unpack_param(ctx
, ctx
->tcs_out_lds_layout
, 13, 6);
1528 else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
)
1529 return get_num_tcs_out_vertices(ctx
);
1531 unreachable("invalid shader stage for TGSI_SEMANTIC_VERTICESIN");
1534 void si_declare_compute_memory(struct si_shader_context
*ctx
)
1536 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1537 unsigned lds_size
= sel
->info
.properties
[TGSI_PROPERTY_CS_LOCAL_SIZE
];
1539 LLVMTypeRef i8p
= LLVMPointerType(ctx
->i8
, AC_ADDR_SPACE_LDS
);
1542 assert(!ctx
->ac
.lds
);
1544 var
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
1545 LLVMArrayType(ctx
->i8
, lds_size
),
1548 LLVMSetAlignment(var
, 64 * 1024);
1550 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, var
, i8p
, "");
1553 static LLVMValueRef
load_const_buffer_desc_fast_path(struct si_shader_context
*ctx
)
1556 ac_get_arg(&ctx
->ac
, ctx
->const_and_shader_buffers
);
1557 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1559 /* Do the bounds checking with a descriptor, because
1560 * doing computation and manual bounds checking of 64-bit
1561 * addresses generates horrible VALU code with very high
1562 * VGPR usage and very low SIMD occupancy.
1564 ptr
= LLVMBuildPtrToInt(ctx
->ac
.builder
, ptr
, ctx
->ac
.intptr
, "");
1566 LLVMValueRef desc0
, desc1
;
1568 desc1
= LLVMConstInt(ctx
->i32
,
1569 S_008F04_BASE_ADDRESS_HI(ctx
->screen
->info
.address32_hi
), 0);
1571 uint32_t rsrc3
= S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
1572 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
1573 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
1574 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
);
1576 if (ctx
->screen
->info
.chip_class
>= GFX10
)
1577 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
1578 S_008F0C_OOB_SELECT(V_008F0C_OOB_SELECT_RAW
) |
1579 S_008F0C_RESOURCE_LEVEL(1);
1581 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
1582 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
);
1584 LLVMValueRef desc_elems
[] = {
1587 LLVMConstInt(ctx
->i32
, sel
->info
.constbuf0_num_slots
* 16, 0),
1588 LLVMConstInt(ctx
->i32
, rsrc3
, false)
1591 return ac_build_gather_values(&ctx
->ac
, desc_elems
, 4);
1594 static LLVMValueRef
load_ubo(struct ac_shader_abi
*abi
, LLVMValueRef index
)
1596 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1597 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1599 LLVMValueRef ptr
= ac_get_arg(&ctx
->ac
, ctx
->const_and_shader_buffers
);
1601 if (sel
->info
.const_buffers_declared
== 1 &&
1602 sel
->info
.shader_buffers_declared
== 0) {
1603 return load_const_buffer_desc_fast_path(ctx
);
1606 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_const_buffers
);
1607 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
1608 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
1610 return ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
1614 load_ssbo(struct ac_shader_abi
*abi
, LLVMValueRef index
, bool write
)
1616 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1617 LLVMValueRef rsrc_ptr
= ac_get_arg(&ctx
->ac
,
1618 ctx
->const_and_shader_buffers
);
1620 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_shader_buffers
);
1621 index
= LLVMBuildSub(ctx
->ac
.builder
,
1622 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
- 1, 0),
1625 return ac_build_load_to_sgpr(&ctx
->ac
, rsrc_ptr
, index
);
1628 /* Initialize arguments for the shader export intrinsic */
1629 static void si_llvm_init_export_args(struct si_shader_context
*ctx
,
1630 LLVMValueRef
*values
,
1632 struct ac_export_args
*args
)
1634 LLVMValueRef f32undef
= LLVMGetUndef(ctx
->ac
.f32
);
1635 unsigned spi_shader_col_format
= V_028714_SPI_SHADER_32_ABGR
;
1637 bool is_int8
, is_int10
;
1639 /* Default is 0xf. Adjusted below depending on the format. */
1640 args
->enabled_channels
= 0xf; /* writemask */
1642 /* Specify whether the EXEC mask represents the valid mask */
1643 args
->valid_mask
= 0;
1645 /* Specify whether this is the last export */
1648 /* Specify the target we are exporting */
1649 args
->target
= target
;
1651 if (ctx
->type
== PIPE_SHADER_FRAGMENT
) {
1652 const struct si_shader_key
*key
= &ctx
->shader
->key
;
1653 unsigned col_formats
= key
->part
.ps
.epilog
.spi_shader_col_format
;
1654 int cbuf
= target
- V_008DFC_SQ_EXP_MRT
;
1656 assert(cbuf
>= 0 && cbuf
< 8);
1657 spi_shader_col_format
= (col_formats
>> (cbuf
* 4)) & 0xf;
1658 is_int8
= (key
->part
.ps
.epilog
.color_is_int8
>> cbuf
) & 0x1;
1659 is_int10
= (key
->part
.ps
.epilog
.color_is_int10
>> cbuf
) & 0x1;
1662 args
->compr
= false;
1663 args
->out
[0] = f32undef
;
1664 args
->out
[1] = f32undef
;
1665 args
->out
[2] = f32undef
;
1666 args
->out
[3] = f32undef
;
1668 LLVMValueRef (*packf
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2]) = NULL
;
1669 LLVMValueRef (*packi
)(struct ac_llvm_context
*ctx
, LLVMValueRef args
[2],
1670 unsigned bits
, bool hi
) = NULL
;
1672 switch (spi_shader_col_format
) {
1673 case V_028714_SPI_SHADER_ZERO
:
1674 args
->enabled_channels
= 0; /* writemask */
1675 args
->target
= V_008DFC_SQ_EXP_NULL
;
1678 case V_028714_SPI_SHADER_32_R
:
1679 args
->enabled_channels
= 1; /* writemask */
1680 args
->out
[0] = values
[0];
1683 case V_028714_SPI_SHADER_32_GR
:
1684 args
->enabled_channels
= 0x3; /* writemask */
1685 args
->out
[0] = values
[0];
1686 args
->out
[1] = values
[1];
1689 case V_028714_SPI_SHADER_32_AR
:
1690 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
1691 args
->enabled_channels
= 0x3; /* writemask */
1692 args
->out
[0] = values
[0];
1693 args
->out
[1] = values
[3];
1695 args
->enabled_channels
= 0x9; /* writemask */
1696 args
->out
[0] = values
[0];
1697 args
->out
[3] = values
[3];
1701 case V_028714_SPI_SHADER_FP16_ABGR
:
1702 packf
= ac_build_cvt_pkrtz_f16
;
1705 case V_028714_SPI_SHADER_UNORM16_ABGR
:
1706 packf
= ac_build_cvt_pknorm_u16
;
1709 case V_028714_SPI_SHADER_SNORM16_ABGR
:
1710 packf
= ac_build_cvt_pknorm_i16
;
1713 case V_028714_SPI_SHADER_UINT16_ABGR
:
1714 packi
= ac_build_cvt_pk_u16
;
1717 case V_028714_SPI_SHADER_SINT16_ABGR
:
1718 packi
= ac_build_cvt_pk_i16
;
1721 case V_028714_SPI_SHADER_32_ABGR
:
1722 memcpy(&args
->out
[0], values
, sizeof(values
[0]) * 4);
1726 /* Pack f16 or norm_i16/u16. */
1728 for (chan
= 0; chan
< 2; chan
++) {
1729 LLVMValueRef pack_args
[2] = {
1731 values
[2 * chan
+ 1]
1733 LLVMValueRef packed
;
1735 packed
= packf(&ctx
->ac
, pack_args
);
1736 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
1738 args
->compr
= 1; /* COMPR flag */
1742 for (chan
= 0; chan
< 2; chan
++) {
1743 LLVMValueRef pack_args
[2] = {
1744 ac_to_integer(&ctx
->ac
, values
[2 * chan
]),
1745 ac_to_integer(&ctx
->ac
, values
[2 * chan
+ 1])
1747 LLVMValueRef packed
;
1749 packed
= packi(&ctx
->ac
, pack_args
,
1750 is_int8
? 8 : is_int10
? 10 : 16,
1752 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
1754 args
->compr
= 1; /* COMPR flag */
1758 static void si_alpha_test(struct si_shader_context
*ctx
, LLVMValueRef alpha
)
1760 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_NEVER
) {
1761 static LLVMRealPredicate cond_map
[PIPE_FUNC_ALWAYS
+ 1] = {
1762 [PIPE_FUNC_LESS
] = LLVMRealOLT
,
1763 [PIPE_FUNC_EQUAL
] = LLVMRealOEQ
,
1764 [PIPE_FUNC_LEQUAL
] = LLVMRealOLE
,
1765 [PIPE_FUNC_GREATER
] = LLVMRealOGT
,
1766 [PIPE_FUNC_NOTEQUAL
] = LLVMRealONE
,
1767 [PIPE_FUNC_GEQUAL
] = LLVMRealOGE
,
1769 LLVMRealPredicate cond
= cond_map
[ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
];
1772 LLVMValueRef alpha_ref
= LLVMGetParam(ctx
->main_fn
,
1773 SI_PARAM_ALPHA_REF
);
1774 LLVMValueRef alpha_pass
=
1775 LLVMBuildFCmp(ctx
->ac
.builder
, cond
, alpha
, alpha_ref
, "");
1776 ac_build_kill_if_false(&ctx
->ac
, alpha_pass
);
1778 ac_build_kill_if_false(&ctx
->ac
, ctx
->i1false
);
1782 static LLVMValueRef
si_scale_alpha_by_sample_mask(struct si_shader_context
*ctx
,
1784 unsigned samplemask_param
)
1786 LLVMValueRef coverage
;
1788 /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
1789 coverage
= LLVMGetParam(ctx
->main_fn
,
1791 coverage
= ac_to_integer(&ctx
->ac
, coverage
);
1793 coverage
= ac_build_intrinsic(&ctx
->ac
, "llvm.ctpop.i32",
1795 &coverage
, 1, AC_FUNC_ATTR_READNONE
);
1797 coverage
= LLVMBuildUIToFP(ctx
->ac
.builder
, coverage
,
1800 coverage
= LLVMBuildFMul(ctx
->ac
.builder
, coverage
,
1801 LLVMConstReal(ctx
->f32
,
1802 1.0 / SI_NUM_SMOOTH_AA_SAMPLES
), "");
1804 return LLVMBuildFMul(ctx
->ac
.builder
, alpha
, coverage
, "");
1807 static void si_llvm_emit_clipvertex(struct si_shader_context
*ctx
,
1808 struct ac_export_args
*pos
, LLVMValueRef
*out_elts
)
1812 unsigned const_chan
;
1813 LLVMValueRef base_elt
;
1814 LLVMValueRef ptr
= ac_get_arg(&ctx
->ac
, ctx
->rw_buffers
);
1815 LLVMValueRef constbuf_index
= LLVMConstInt(ctx
->i32
,
1816 SI_VS_CONST_CLIP_PLANES
, 0);
1817 LLVMValueRef const_resource
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, constbuf_index
);
1819 for (reg_index
= 0; reg_index
< 2; reg_index
++) {
1820 struct ac_export_args
*args
= &pos
[2 + reg_index
];
1825 args
->out
[3] = LLVMConstReal(ctx
->f32
, 0.0f
);
1827 /* Compute dot products of position and user clip plane vectors */
1828 for (chan
= 0; chan
< 4; chan
++) {
1829 for (const_chan
= 0; const_chan
< 4; const_chan
++) {
1831 LLVMConstInt(ctx
->i32
, ((reg_index
* 4 + chan
) * 4 +
1832 const_chan
) * 4, 0);
1833 base_elt
= buffer_load_const(ctx
, const_resource
,
1835 args
->out
[chan
] = ac_build_fmad(&ctx
->ac
, base_elt
,
1836 out_elts
[const_chan
], args
->out
[chan
]);
1840 args
->enabled_channels
= 0xf;
1841 args
->valid_mask
= 0;
1843 args
->target
= V_008DFC_SQ_EXP_POS
+ 2 + reg_index
;
1848 static void si_dump_streamout(struct pipe_stream_output_info
*so
)
1852 if (so
->num_outputs
)
1853 fprintf(stderr
, "STREAMOUT\n");
1855 for (i
= 0; i
< so
->num_outputs
; i
++) {
1856 unsigned mask
= ((1 << so
->output
[i
].num_components
) - 1) <<
1857 so
->output
[i
].start_component
;
1858 fprintf(stderr
, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n",
1859 i
, so
->output
[i
].output_buffer
,
1860 so
->output
[i
].dst_offset
, so
->output
[i
].dst_offset
+ so
->output
[i
].num_components
- 1,
1861 so
->output
[i
].register_index
,
1862 mask
& 1 ? "x" : "",
1863 mask
& 2 ? "y" : "",
1864 mask
& 4 ? "z" : "",
1865 mask
& 8 ? "w" : "");
1869 void si_emit_streamout_output(struct si_shader_context
*ctx
,
1870 LLVMValueRef
const *so_buffers
,
1871 LLVMValueRef
const *so_write_offsets
,
1872 struct pipe_stream_output
*stream_out
,
1873 struct si_shader_output_values
*shader_out
)
1875 unsigned buf_idx
= stream_out
->output_buffer
;
1876 unsigned start
= stream_out
->start_component
;
1877 unsigned num_comps
= stream_out
->num_components
;
1878 LLVMValueRef out
[4];
1880 assert(num_comps
&& num_comps
<= 4);
1881 if (!num_comps
|| num_comps
> 4)
1884 /* Load the output as int. */
1885 for (int j
= 0; j
< num_comps
; j
++) {
1886 assert(stream_out
->stream
== shader_out
->vertex_stream
[start
+ j
]);
1888 out
[j
] = ac_to_integer(&ctx
->ac
, shader_out
->values
[start
+ j
]);
1891 /* Pack the output. */
1892 LLVMValueRef vdata
= NULL
;
1894 switch (num_comps
) {
1895 case 1: /* as i32 */
1898 case 2: /* as v2i32 */
1899 case 3: /* as v3i32 */
1900 if (ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false)) {
1901 vdata
= ac_build_gather_values(&ctx
->ac
, out
, num_comps
);
1904 /* as v4i32 (aligned to 4) */
1905 out
[3] = LLVMGetUndef(ctx
->i32
);
1907 case 4: /* as v4i32 */
1908 vdata
= ac_build_gather_values(&ctx
->ac
, out
, util_next_power_of_two(num_comps
));
1912 ac_build_buffer_store_dword(&ctx
->ac
, so_buffers
[buf_idx
],
1914 so_write_offsets
[buf_idx
],
1916 stream_out
->dst_offset
* 4, ac_glc
| ac_slc
);
1920 * Write streamout data to buffers for vertex stream @p stream (different
1921 * vertex streams can occur for GS copy shaders).
1923 static void si_llvm_emit_streamout(struct si_shader_context
*ctx
,
1924 struct si_shader_output_values
*outputs
,
1925 unsigned noutput
, unsigned stream
)
1927 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1928 struct pipe_stream_output_info
*so
= &sel
->so
;
1929 LLVMBuilderRef builder
= ctx
->ac
.builder
;
1932 /* Get bits [22:16], i.e. (so_param >> 16) & 127; */
1933 LLVMValueRef so_vtx_count
=
1934 si_unpack_param(ctx
, ctx
->streamout_config
, 16, 7);
1936 LLVMValueRef tid
= ac_get_thread_id(&ctx
->ac
);
1938 /* can_emit = tid < so_vtx_count; */
1939 LLVMValueRef can_emit
=
1940 LLVMBuildICmp(builder
, LLVMIntULT
, tid
, so_vtx_count
, "");
1942 /* Emit the streamout code conditionally. This actually avoids
1943 * out-of-bounds buffer access. The hw tells us via the SGPR
1944 * (so_vtx_count) which threads are allowed to emit streamout data. */
1945 ac_build_ifcc(&ctx
->ac
, can_emit
, 6501);
1947 /* The buffer offset is computed as follows:
1948 * ByteOffset = streamout_offset[buffer_id]*4 +
1949 * (streamout_write_index + thread_id)*stride[buffer_id] +
1953 LLVMValueRef so_write_index
=
1954 ac_get_arg(&ctx
->ac
,
1955 ctx
->streamout_write_index
);
1957 /* Compute (streamout_write_index + thread_id). */
1958 so_write_index
= LLVMBuildAdd(builder
, so_write_index
, tid
, "");
1960 /* Load the descriptor and compute the write offset for each
1961 * enabled buffer. */
1962 LLVMValueRef so_write_offset
[4] = {};
1963 LLVMValueRef so_buffers
[4];
1964 LLVMValueRef buf_ptr
= ac_get_arg(&ctx
->ac
,
1967 for (i
= 0; i
< 4; i
++) {
1971 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
,
1972 SI_VS_STREAMOUT_BUF0
+ i
, 0);
1974 so_buffers
[i
] = ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
1976 LLVMValueRef so_offset
= ac_get_arg(&ctx
->ac
,
1977 ctx
->streamout_offset
[i
]);
1978 so_offset
= LLVMBuildMul(builder
, so_offset
, LLVMConstInt(ctx
->i32
, 4, 0), "");
1980 so_write_offset
[i
] = ac_build_imad(&ctx
->ac
, so_write_index
,
1981 LLVMConstInt(ctx
->i32
, so
->stride
[i
]*4, 0),
1985 /* Write streamout data. */
1986 for (i
= 0; i
< so
->num_outputs
; i
++) {
1987 unsigned reg
= so
->output
[i
].register_index
;
1992 if (stream
!= so
->output
[i
].stream
)
1995 si_emit_streamout_output(ctx
, so_buffers
, so_write_offset
,
1996 &so
->output
[i
], &outputs
[reg
]);
1999 ac_build_endif(&ctx
->ac
, 6501);
2002 static void si_export_param(struct si_shader_context
*ctx
, unsigned index
,
2003 LLVMValueRef
*values
)
2005 struct ac_export_args args
;
2007 si_llvm_init_export_args(ctx
, values
,
2008 V_008DFC_SQ_EXP_PARAM
+ index
, &args
);
2009 ac_build_export(&ctx
->ac
, &args
);
2012 static void si_build_param_exports(struct si_shader_context
*ctx
,
2013 struct si_shader_output_values
*outputs
,
2016 struct si_shader
*shader
= ctx
->shader
;
2017 unsigned param_count
= 0;
2019 for (unsigned i
= 0; i
< noutput
; i
++) {
2020 unsigned semantic_name
= outputs
[i
].semantic_name
;
2021 unsigned semantic_index
= outputs
[i
].semantic_index
;
2023 if (outputs
[i
].vertex_stream
[0] != 0 &&
2024 outputs
[i
].vertex_stream
[1] != 0 &&
2025 outputs
[i
].vertex_stream
[2] != 0 &&
2026 outputs
[i
].vertex_stream
[3] != 0)
2029 switch (semantic_name
) {
2030 case TGSI_SEMANTIC_LAYER
:
2031 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2032 case TGSI_SEMANTIC_CLIPDIST
:
2033 case TGSI_SEMANTIC_COLOR
:
2034 case TGSI_SEMANTIC_BCOLOR
:
2035 case TGSI_SEMANTIC_PRIMID
:
2036 case TGSI_SEMANTIC_FOG
:
2037 case TGSI_SEMANTIC_TEXCOORD
:
2038 case TGSI_SEMANTIC_GENERIC
:
2044 if ((semantic_name
!= TGSI_SEMANTIC_GENERIC
||
2045 semantic_index
< SI_MAX_IO_GENERIC
) &&
2046 shader
->key
.opt
.kill_outputs
&
2047 (1ull << si_shader_io_get_unique_index(semantic_name
,
2048 semantic_index
, true)))
2051 si_export_param(ctx
, param_count
, outputs
[i
].values
);
2053 assert(i
< ARRAY_SIZE(shader
->info
.vs_output_param_offset
));
2054 shader
->info
.vs_output_param_offset
[i
] = param_count
++;
2057 shader
->info
.nr_param_exports
= param_count
;
2061 * Vertex color clamping.
2063 * This uses a state constant loaded in a user data SGPR and
2064 * an IF statement is added that clamps all colors if the constant
2067 static void si_vertex_color_clamping(struct si_shader_context
*ctx
,
2068 struct si_shader_output_values
*outputs
,
2071 LLVMValueRef addr
[SI_MAX_VS_OUTPUTS
][4];
2072 bool has_colors
= false;
2074 /* Store original colors to alloca variables. */
2075 for (unsigned i
= 0; i
< noutput
; i
++) {
2076 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2077 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2080 for (unsigned j
= 0; j
< 4; j
++) {
2081 addr
[i
][j
] = ac_build_alloca_undef(&ctx
->ac
, ctx
->f32
, "");
2082 LLVMBuildStore(ctx
->ac
.builder
, outputs
[i
].values
[j
], addr
[i
][j
]);
2090 /* The state is in the first bit of the user SGPR. */
2091 LLVMValueRef cond
= ac_get_arg(&ctx
->ac
, ctx
->vs_state_bits
);
2092 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->i1
, "");
2094 ac_build_ifcc(&ctx
->ac
, cond
, 6502);
2096 /* Store clamped colors to alloca variables within the conditional block. */
2097 for (unsigned i
= 0; i
< noutput
; i
++) {
2098 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2099 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2102 for (unsigned j
= 0; j
< 4; j
++) {
2103 LLVMBuildStore(ctx
->ac
.builder
,
2104 ac_build_clamp(&ctx
->ac
, outputs
[i
].values
[j
]),
2108 ac_build_endif(&ctx
->ac
, 6502);
2110 /* Load clamped colors */
2111 for (unsigned i
= 0; i
< noutput
; i
++) {
2112 if (outputs
[i
].semantic_name
!= TGSI_SEMANTIC_COLOR
&&
2113 outputs
[i
].semantic_name
!= TGSI_SEMANTIC_BCOLOR
)
2116 for (unsigned j
= 0; j
< 4; j
++) {
2117 outputs
[i
].values
[j
] =
2118 LLVMBuildLoad(ctx
->ac
.builder
, addr
[i
][j
], "");
2123 /* Generate export instructions for hardware VS shader stage or NGG GS stage
2124 * (position and parameter data only).
2126 void si_llvm_export_vs(struct si_shader_context
*ctx
,
2127 struct si_shader_output_values
*outputs
,
2130 struct si_shader
*shader
= ctx
->shader
;
2131 struct ac_export_args pos_args
[4] = {};
2132 LLVMValueRef psize_value
= NULL
, edgeflag_value
= NULL
, layer_value
= NULL
, viewport_index_value
= NULL
;
2136 si_vertex_color_clamping(ctx
, outputs
, noutput
);
2138 /* Build position exports. */
2139 for (i
= 0; i
< noutput
; i
++) {
2140 switch (outputs
[i
].semantic_name
) {
2141 case TGSI_SEMANTIC_POSITION
:
2142 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2143 V_008DFC_SQ_EXP_POS
, &pos_args
[0]);
2145 case TGSI_SEMANTIC_PSIZE
:
2146 psize_value
= outputs
[i
].values
[0];
2148 case TGSI_SEMANTIC_LAYER
:
2149 layer_value
= outputs
[i
].values
[0];
2151 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2152 viewport_index_value
= outputs
[i
].values
[0];
2154 case TGSI_SEMANTIC_EDGEFLAG
:
2155 edgeflag_value
= outputs
[i
].values
[0];
2157 case TGSI_SEMANTIC_CLIPDIST
:
2158 if (!shader
->key
.opt
.clip_disable
) {
2159 unsigned index
= 2 + outputs
[i
].semantic_index
;
2160 si_llvm_init_export_args(ctx
, outputs
[i
].values
,
2161 V_008DFC_SQ_EXP_POS
+ index
,
2165 case TGSI_SEMANTIC_CLIPVERTEX
:
2166 if (!shader
->key
.opt
.clip_disable
) {
2167 si_llvm_emit_clipvertex(ctx
, pos_args
,
2174 /* We need to add the position output manually if it's missing. */
2175 if (!pos_args
[0].out
[0]) {
2176 pos_args
[0].enabled_channels
= 0xf; /* writemask */
2177 pos_args
[0].valid_mask
= 0; /* EXEC mask */
2178 pos_args
[0].done
= 0; /* last export? */
2179 pos_args
[0].target
= V_008DFC_SQ_EXP_POS
;
2180 pos_args
[0].compr
= 0; /* COMPR flag */
2181 pos_args
[0].out
[0] = ctx
->ac
.f32_0
; /* X */
2182 pos_args
[0].out
[1] = ctx
->ac
.f32_0
; /* Y */
2183 pos_args
[0].out
[2] = ctx
->ac
.f32_0
; /* Z */
2184 pos_args
[0].out
[3] = ctx
->ac
.f32_1
; /* W */
2187 bool pos_writes_edgeflag
= shader
->selector
->info
.writes_edgeflag
&&
2188 !shader
->key
.as_ngg
;
2190 /* Write the misc vector (point size, edgeflag, layer, viewport). */
2191 if (shader
->selector
->info
.writes_psize
||
2192 pos_writes_edgeflag
||
2193 shader
->selector
->info
.writes_viewport_index
||
2194 shader
->selector
->info
.writes_layer
) {
2195 pos_args
[1].enabled_channels
= shader
->selector
->info
.writes_psize
|
2196 (pos_writes_edgeflag
<< 1) |
2197 (shader
->selector
->info
.writes_layer
<< 2);
2199 pos_args
[1].valid_mask
= 0; /* EXEC mask */
2200 pos_args
[1].done
= 0; /* last export? */
2201 pos_args
[1].target
= V_008DFC_SQ_EXP_POS
+ 1;
2202 pos_args
[1].compr
= 0; /* COMPR flag */
2203 pos_args
[1].out
[0] = ctx
->ac
.f32_0
; /* X */
2204 pos_args
[1].out
[1] = ctx
->ac
.f32_0
; /* Y */
2205 pos_args
[1].out
[2] = ctx
->ac
.f32_0
; /* Z */
2206 pos_args
[1].out
[3] = ctx
->ac
.f32_0
; /* W */
2208 if (shader
->selector
->info
.writes_psize
)
2209 pos_args
[1].out
[0] = psize_value
;
2211 if (pos_writes_edgeflag
) {
2212 /* The output is a float, but the hw expects an integer
2213 * with the first bit containing the edge flag. */
2214 edgeflag_value
= LLVMBuildFPToUI(ctx
->ac
.builder
,
2217 edgeflag_value
= ac_build_umin(&ctx
->ac
,
2221 /* The LLVM intrinsic expects a float. */
2222 pos_args
[1].out
[1] = ac_to_float(&ctx
->ac
, edgeflag_value
);
2225 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
2226 /* GFX9 has the layer in out.z[10:0] and the viewport
2227 * index in out.z[19:16].
2229 if (shader
->selector
->info
.writes_layer
)
2230 pos_args
[1].out
[2] = layer_value
;
2232 if (shader
->selector
->info
.writes_viewport_index
) {
2233 LLVMValueRef v
= viewport_index_value
;
2235 v
= ac_to_integer(&ctx
->ac
, v
);
2236 v
= LLVMBuildShl(ctx
->ac
.builder
, v
,
2237 LLVMConstInt(ctx
->i32
, 16, 0), "");
2238 v
= LLVMBuildOr(ctx
->ac
.builder
, v
,
2239 ac_to_integer(&ctx
->ac
, pos_args
[1].out
[2]), "");
2240 pos_args
[1].out
[2] = ac_to_float(&ctx
->ac
, v
);
2241 pos_args
[1].enabled_channels
|= 1 << 2;
2244 if (shader
->selector
->info
.writes_layer
)
2245 pos_args
[1].out
[2] = layer_value
;
2247 if (shader
->selector
->info
.writes_viewport_index
) {
2248 pos_args
[1].out
[3] = viewport_index_value
;
2249 pos_args
[1].enabled_channels
|= 1 << 3;
2254 for (i
= 0; i
< 4; i
++)
2255 if (pos_args
[i
].out
[0])
2256 shader
->info
.nr_pos_exports
++;
2258 /* Navi10-14 skip POS0 exports if EXEC=0 and DONE=0, causing a hang.
2259 * Setting valid_mask=1 prevents it and has no other effect.
2261 if (ctx
->screen
->info
.family
== CHIP_NAVI10
||
2262 ctx
->screen
->info
.family
== CHIP_NAVI12
||
2263 ctx
->screen
->info
.family
== CHIP_NAVI14
)
2264 pos_args
[0].valid_mask
= 1;
2267 for (i
= 0; i
< 4; i
++) {
2268 if (!pos_args
[i
].out
[0])
2271 /* Specify the target we are exporting */
2272 pos_args
[i
].target
= V_008DFC_SQ_EXP_POS
+ pos_idx
++;
2274 if (pos_idx
== shader
->info
.nr_pos_exports
)
2275 /* Specify that this is the last export */
2276 pos_args
[i
].done
= 1;
2278 ac_build_export(&ctx
->ac
, &pos_args
[i
]);
2281 /* Build parameter exports. */
2282 si_build_param_exports(ctx
, outputs
, noutput
);
2286 * Forward all outputs from the vertex shader to the TES. This is only used
2287 * for the fixed function TCS.
2289 static void si_copy_tcs_inputs(struct si_shader_context
*ctx
)
2291 LLVMValueRef invocation_id
, buffer
, buffer_offset
;
2292 LLVMValueRef lds_vertex_stride
, lds_base
;
2295 invocation_id
= si_unpack_param(ctx
, ctx
->args
.tcs_rel_ids
, 8, 5);
2296 buffer
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
2297 buffer_offset
= ac_get_arg(&ctx
->ac
, ctx
->tcs_offchip_offset
);
2299 lds_vertex_stride
= get_tcs_in_vertex_dw_stride(ctx
);
2300 lds_base
= get_tcs_in_current_patch_offset(ctx
);
2301 lds_base
= ac_build_imad(&ctx
->ac
, invocation_id
, lds_vertex_stride
,
2304 inputs
= ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
;
2306 unsigned i
= u_bit_scan64(&inputs
);
2308 LLVMValueRef lds_ptr
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2309 LLVMConstInt(ctx
->i32
, 4 * i
, 0),
2312 LLVMValueRef buffer_addr
= get_tcs_tes_buffer_address(ctx
,
2313 get_rel_patch_id(ctx
),
2315 LLVMConstInt(ctx
->i32
, i
, 0));
2317 LLVMValueRef value
= lshs_lds_load(ctx
, ctx
->ac
.i32
, ~0, lds_ptr
);
2319 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buffer_addr
,
2320 buffer_offset
, 0, ac_glc
);
2324 static void si_write_tess_factors(struct si_shader_context
*ctx
,
2325 LLVMValueRef rel_patch_id
,
2326 LLVMValueRef invocation_id
,
2327 LLVMValueRef tcs_out_current_patch_data_offset
,
2328 LLVMValueRef invoc0_tf_outer
[4],
2329 LLVMValueRef invoc0_tf_inner
[2])
2331 struct si_shader
*shader
= ctx
->shader
;
2332 unsigned tess_inner_index
, tess_outer_index
;
2333 LLVMValueRef lds_base
, lds_inner
, lds_outer
, byteoffset
, buffer
;
2334 LLVMValueRef out
[6], vec0
, vec1
, tf_base
, inner
[4], outer
[4];
2335 unsigned stride
, outer_comps
, inner_comps
, i
, offset
;
2337 /* Add a barrier before loading tess factors from LDS. */
2338 if (!shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
)
2339 si_llvm_emit_barrier(ctx
);
2341 /* Do this only for invocation 0, because the tess levels are per-patch,
2344 * This can't jump, because invocation 0 executes this. It should
2345 * at least mask out the loads and stores for other invocations.
2347 ac_build_ifcc(&ctx
->ac
,
2348 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2349 invocation_id
, ctx
->i32_0
, ""), 6503);
2351 /* Determine the layout of one tess factor element in the buffer. */
2352 switch (shader
->key
.part
.tcs
.epilog
.prim_mode
) {
2353 case PIPE_PRIM_LINES
:
2354 stride
= 2; /* 2 dwords, 1 vec2 store */
2358 case PIPE_PRIM_TRIANGLES
:
2359 stride
= 4; /* 4 dwords, 1 vec4 store */
2363 case PIPE_PRIM_QUADS
:
2364 stride
= 6; /* 6 dwords, 2 stores (vec4 + vec2) */
2373 for (i
= 0; i
< 4; i
++) {
2374 inner
[i
] = LLVMGetUndef(ctx
->i32
);
2375 outer
[i
] = LLVMGetUndef(ctx
->i32
);
2378 if (shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
) {
2379 /* Tess factors are in VGPRs. */
2380 for (i
= 0; i
< outer_comps
; i
++)
2381 outer
[i
] = out
[i
] = invoc0_tf_outer
[i
];
2382 for (i
= 0; i
< inner_comps
; i
++)
2383 inner
[i
] = out
[outer_comps
+i
] = invoc0_tf_inner
[i
];
2385 /* Load tess_inner and tess_outer from LDS.
2386 * Any invocation can write them, so we can't get them from a temporary.
2388 tess_inner_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSINNER
, 0);
2389 tess_outer_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSOUTER
, 0);
2391 lds_base
= tcs_out_current_patch_data_offset
;
2392 lds_inner
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2393 LLVMConstInt(ctx
->i32
,
2394 tess_inner_index
* 4, 0), "");
2395 lds_outer
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2396 LLVMConstInt(ctx
->i32
,
2397 tess_outer_index
* 4, 0), "");
2399 for (i
= 0; i
< outer_comps
; i
++) {
2401 lshs_lds_load(ctx
, ctx
->ac
.i32
, i
, lds_outer
);
2403 for (i
= 0; i
< inner_comps
; i
++) {
2404 inner
[i
] = out
[outer_comps
+i
] =
2405 lshs_lds_load(ctx
, ctx
->ac
.i32
, i
, lds_inner
);
2409 if (shader
->key
.part
.tcs
.epilog
.prim_mode
== PIPE_PRIM_LINES
) {
2410 /* For isolines, the hardware expects tess factors in the
2411 * reverse order from what NIR specifies.
2413 LLVMValueRef tmp
= out
[0];
2418 /* Convert the outputs to vectors for stores. */
2419 vec0
= ac_build_gather_values(&ctx
->ac
, out
, MIN2(stride
, 4));
2423 vec1
= ac_build_gather_values(&ctx
->ac
, out
+4, stride
- 4);
2425 /* Get the buffer. */
2426 buffer
= get_tess_ring_descriptor(ctx
, TCS_FACTOR_RING
);
2428 /* Get the offset. */
2429 tf_base
= ac_get_arg(&ctx
->ac
,
2430 ctx
->tcs_factor_offset
);
2431 byteoffset
= LLVMBuildMul(ctx
->ac
.builder
, rel_patch_id
,
2432 LLVMConstInt(ctx
->i32
, 4 * stride
, 0), "");
2434 ac_build_ifcc(&ctx
->ac
,
2435 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2436 rel_patch_id
, ctx
->i32_0
, ""), 6504);
2438 /* Store the dynamic HS control word. */
2440 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
2441 ac_build_buffer_store_dword(&ctx
->ac
, buffer
,
2442 LLVMConstInt(ctx
->i32
, 0x80000000, 0),
2443 1, ctx
->i32_0
, tf_base
,
2448 ac_build_endif(&ctx
->ac
, 6504);
2450 /* Store the tessellation factors. */
2451 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec0
,
2452 MIN2(stride
, 4), byteoffset
, tf_base
,
2456 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec1
,
2457 stride
- 4, byteoffset
, tf_base
,
2460 /* Store the tess factors into the offchip buffer if TES reads them. */
2461 if (shader
->key
.part
.tcs
.epilog
.tes_reads_tess_factors
) {
2462 LLVMValueRef buf
, base
, inner_vec
, outer_vec
, tf_outer_offset
;
2463 LLVMValueRef tf_inner_offset
;
2464 unsigned param_outer
, param_inner
;
2466 buf
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TCS
);
2467 base
= ac_get_arg(&ctx
->ac
, ctx
->tcs_offchip_offset
);
2469 param_outer
= si_shader_io_get_unique_index_patch(
2470 TGSI_SEMANTIC_TESSOUTER
, 0);
2471 tf_outer_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
2472 LLVMConstInt(ctx
->i32
, param_outer
, 0));
2474 unsigned outer_vec_size
=
2475 ac_has_vec3_support(ctx
->screen
->info
.chip_class
, false) ?
2476 outer_comps
: util_next_power_of_two(outer_comps
);
2477 outer_vec
= ac_build_gather_values(&ctx
->ac
, outer
, outer_vec_size
);
2479 ac_build_buffer_store_dword(&ctx
->ac
, buf
, outer_vec
,
2480 outer_comps
, tf_outer_offset
,
2483 param_inner
= si_shader_io_get_unique_index_patch(
2484 TGSI_SEMANTIC_TESSINNER
, 0);
2485 tf_inner_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
2486 LLVMConstInt(ctx
->i32
, param_inner
, 0));
2488 inner_vec
= inner_comps
== 1 ? inner
[0] :
2489 ac_build_gather_values(&ctx
->ac
, inner
, inner_comps
);
2490 ac_build_buffer_store_dword(&ctx
->ac
, buf
, inner_vec
,
2491 inner_comps
, tf_inner_offset
,
2496 ac_build_endif(&ctx
->ac
, 6503);
2500 si_insert_input_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2501 struct ac_arg param
, unsigned return_index
)
2503 return LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
2504 ac_get_arg(&ctx
->ac
, param
),
2509 si_insert_input_ret_float(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2510 struct ac_arg param
, unsigned return_index
)
2512 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2513 LLVMValueRef p
= ac_get_arg(&ctx
->ac
, param
);
2515 return LLVMBuildInsertValue(builder
, ret
,
2516 ac_to_float(&ctx
->ac
, p
),
2521 si_insert_input_ptr(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2522 struct ac_arg param
, unsigned return_index
)
2524 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2525 LLVMValueRef ptr
= ac_get_arg(&ctx
->ac
, param
);
2526 ptr
= LLVMBuildPtrToInt(builder
, ptr
, ctx
->i32
, "");
2527 return LLVMBuildInsertValue(builder
, ret
, ptr
, return_index
, "");
2530 /* This only writes the tessellation factor levels. */
2531 static void si_llvm_emit_tcs_epilogue(struct ac_shader_abi
*abi
,
2532 unsigned max_outputs
,
2533 LLVMValueRef
*addrs
)
2535 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2536 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2537 LLVMValueRef rel_patch_id
, invocation_id
, tf_lds_offset
;
2539 si_copy_tcs_inputs(ctx
);
2541 rel_patch_id
= get_rel_patch_id(ctx
);
2542 invocation_id
= si_unpack_param(ctx
, ctx
->args
.tcs_rel_ids
, 8, 5);
2543 tf_lds_offset
= get_tcs_out_current_patch_data_offset(ctx
);
2545 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
2546 LLVMBasicBlockRef blocks
[2] = {
2547 LLVMGetInsertBlock(builder
),
2548 ctx
->merged_wrap_if_entry_block
2550 LLVMValueRef values
[2];
2552 ac_build_endif(&ctx
->ac
, ctx
->merged_wrap_if_label
);
2554 values
[0] = rel_patch_id
;
2555 values
[1] = LLVMGetUndef(ctx
->i32
);
2556 rel_patch_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
2558 values
[0] = tf_lds_offset
;
2559 values
[1] = LLVMGetUndef(ctx
->i32
);
2560 tf_lds_offset
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
2562 values
[0] = invocation_id
;
2563 values
[1] = ctx
->i32_1
; /* cause the epilog to skip threads */
2564 invocation_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
2567 /* Return epilog parameters from this function. */
2568 LLVMValueRef ret
= ctx
->return_value
;
2571 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
2572 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_layout
,
2573 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
2574 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_out_lds_layout
,
2575 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
2576 /* Tess offchip and tess factor offsets are at the beginning. */
2577 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_offset
, 2);
2578 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_factor_offset
, 4);
2579 vgpr
= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
+ 1;
2581 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_layout
,
2582 GFX6_SGPR_TCS_OFFCHIP_LAYOUT
);
2583 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_out_lds_layout
,
2584 GFX6_SGPR_TCS_OUT_LAYOUT
);
2585 /* Tess offchip and tess factor offsets are after user SGPRs. */
2586 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_offset
,
2587 GFX6_TCS_NUM_USER_SGPR
);
2588 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_factor_offset
,
2589 GFX6_TCS_NUM_USER_SGPR
+ 1);
2590 vgpr
= GFX6_TCS_NUM_USER_SGPR
+ 2;
2594 rel_patch_id
= ac_to_float(&ctx
->ac
, rel_patch_id
);
2595 invocation_id
= ac_to_float(&ctx
->ac
, invocation_id
);
2596 tf_lds_offset
= ac_to_float(&ctx
->ac
, tf_lds_offset
);
2598 /* Leave a hole corresponding to the two input VGPRs. This ensures that
2599 * the invocation_id output does not alias the tcs_rel_ids input,
2600 * which saves a V_MOV on gfx9.
2604 ret
= LLVMBuildInsertValue(builder
, ret
, rel_patch_id
, vgpr
++, "");
2605 ret
= LLVMBuildInsertValue(builder
, ret
, invocation_id
, vgpr
++, "");
2607 if (ctx
->shader
->selector
->info
.tessfactors_are_def_in_all_invocs
) {
2608 vgpr
++; /* skip the tess factor LDS offset */
2609 for (unsigned i
= 0; i
< 6; i
++) {
2610 LLVMValueRef value
=
2611 LLVMBuildLoad(builder
, ctx
->invoc0_tess_factors
[i
], "");
2612 value
= ac_to_float(&ctx
->ac
, value
);
2613 ret
= LLVMBuildInsertValue(builder
, ret
, value
, vgpr
++, "");
2616 ret
= LLVMBuildInsertValue(builder
, ret
, tf_lds_offset
, vgpr
++, "");
2618 ctx
->return_value
= ret
;
2621 /* Pass TCS inputs from LS to TCS on GFX9. */
2622 static void si_set_ls_return_value_for_tcs(struct si_shader_context
*ctx
)
2624 LLVMValueRef ret
= ctx
->return_value
;
2626 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->other_const_and_shader_buffers
, 0);
2627 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->other_samplers_and_images
, 1);
2628 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_offset
, 2);
2629 ret
= si_insert_input_ret(ctx
, ret
, ctx
->merged_wave_info
, 3);
2630 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_factor_offset
, 4);
2631 ret
= si_insert_input_ret(ctx
, ret
, ctx
->merged_scratch_offset
, 5);
2633 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->rw_buffers
,
2634 8 + SI_SGPR_RW_BUFFERS
);
2635 ret
= si_insert_input_ptr(ctx
, ret
,
2636 ctx
->bindless_samplers_and_images
,
2637 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
2639 ret
= si_insert_input_ret(ctx
, ret
, ctx
->vs_state_bits
,
2640 8 + SI_SGPR_VS_STATE_BITS
);
2642 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_offchip_layout
,
2643 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
2644 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_out_lds_offsets
,
2645 8 + GFX9_SGPR_TCS_OUT_OFFSETS
);
2646 ret
= si_insert_input_ret(ctx
, ret
, ctx
->tcs_out_lds_layout
,
2647 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
2649 unsigned vgpr
= 8 + GFX9_TCS_NUM_USER_SGPR
;
2650 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
2651 ac_to_float(&ctx
->ac
,
2652 ac_get_arg(&ctx
->ac
, ctx
->args
.tcs_patch_id
)),
2654 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
2655 ac_to_float(&ctx
->ac
,
2656 ac_get_arg(&ctx
->ac
, ctx
->args
.tcs_rel_ids
)),
2658 ctx
->return_value
= ret
;
2661 /* Pass GS inputs from ES to GS on GFX9. */
2662 static void si_set_es_return_value_for_gs(struct si_shader_context
*ctx
)
2664 LLVMValueRef ret
= ctx
->return_value
;
2666 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->other_const_and_shader_buffers
, 0);
2667 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->other_samplers_and_images
, 1);
2668 if (ctx
->shader
->key
.as_ngg
)
2669 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->gs_tg_info
, 2);
2671 ret
= si_insert_input_ret(ctx
, ret
, ctx
->gs2vs_offset
, 2);
2672 ret
= si_insert_input_ret(ctx
, ret
, ctx
->merged_wave_info
, 3);
2673 ret
= si_insert_input_ret(ctx
, ret
, ctx
->merged_scratch_offset
, 5);
2675 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->rw_buffers
,
2676 8 + SI_SGPR_RW_BUFFERS
);
2677 ret
= si_insert_input_ptr(ctx
, ret
,
2678 ctx
->bindless_samplers_and_images
,
2679 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
2680 if (ctx
->screen
->use_ngg
) {
2681 ret
= si_insert_input_ptr(ctx
, ret
, ctx
->vs_state_bits
,
2682 8 + SI_SGPR_VS_STATE_BITS
);
2686 if (ctx
->type
== PIPE_SHADER_VERTEX
)
2687 vgpr
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
2689 vgpr
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
2691 ret
= si_insert_input_ret_float(ctx
, ret
, ctx
->gs_vtx01_offset
, vgpr
++);
2692 ret
= si_insert_input_ret_float(ctx
, ret
, ctx
->gs_vtx23_offset
, vgpr
++);
2693 ret
= si_insert_input_ret_float(ctx
, ret
, ctx
->args
.gs_prim_id
, vgpr
++);
2694 ret
= si_insert_input_ret_float(ctx
, ret
, ctx
->args
.gs_invocation_id
, vgpr
++);
2695 ret
= si_insert_input_ret_float(ctx
, ret
, ctx
->gs_vtx45_offset
, vgpr
++);
2696 ctx
->return_value
= ret
;
2699 static void si_llvm_emit_ls_epilogue(struct ac_shader_abi
*abi
,
2700 unsigned max_outputs
,
2701 LLVMValueRef
*addrs
)
2703 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2704 struct si_shader
*shader
= ctx
->shader
;
2705 struct si_shader_info
*info
= &shader
->selector
->info
;
2707 LLVMValueRef vertex_id
= ac_get_arg(&ctx
->ac
, ctx
->rel_auto_id
);
2708 LLVMValueRef vertex_dw_stride
= get_tcs_in_vertex_dw_stride(ctx
);
2709 LLVMValueRef base_dw_addr
= LLVMBuildMul(ctx
->ac
.builder
, vertex_id
,
2710 vertex_dw_stride
, "");
2712 /* Write outputs to LDS. The next shader (TCS aka HS) will read
2713 * its inputs from it. */
2714 for (i
= 0; i
< info
->num_outputs
; i
++) {
2715 unsigned name
= info
->output_semantic_name
[i
];
2716 unsigned index
= info
->output_semantic_index
[i
];
2718 /* The ARB_shader_viewport_layer_array spec contains the
2721 * 2) What happens if gl_ViewportIndex or gl_Layer is
2722 * written in the vertex shader and a geometry shader is
2725 * RESOLVED: The value written by the last vertex processing
2726 * stage is used. If the last vertex processing stage
2727 * (vertex, tessellation evaluation or geometry) does not
2728 * statically assign to gl_ViewportIndex or gl_Layer, index
2729 * or layer zero is assumed.
2731 * So writes to those outputs in VS-as-LS are simply ignored.
2733 if (name
== TGSI_SEMANTIC_LAYER
||
2734 name
== TGSI_SEMANTIC_VIEWPORT_INDEX
)
2737 int param
= si_shader_io_get_unique_index(name
, index
, false);
2738 LLVMValueRef dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_dw_addr
,
2739 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
2741 for (chan
= 0; chan
< 4; chan
++) {
2742 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
2745 lshs_lds_store(ctx
, chan
, dw_addr
,
2746 LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], ""));
2750 if (ctx
->screen
->info
.chip_class
>= GFX9
)
2751 si_set_ls_return_value_for_tcs(ctx
);
2754 static void si_llvm_emit_es_epilogue(struct ac_shader_abi
*abi
,
2755 unsigned max_outputs
,
2756 LLVMValueRef
*addrs
)
2758 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2759 struct si_shader
*es
= ctx
->shader
;
2760 struct si_shader_info
*info
= &es
->selector
->info
;
2761 LLVMValueRef lds_base
= NULL
;
2765 if (ctx
->screen
->info
.chip_class
>= GFX9
&& info
->num_outputs
) {
2766 unsigned itemsize_dw
= es
->selector
->esgs_itemsize
/ 4;
2767 LLVMValueRef vertex_idx
= ac_get_thread_id(&ctx
->ac
);
2768 LLVMValueRef wave_idx
= si_unpack_param(ctx
, ctx
->merged_wave_info
, 24, 4);
2769 vertex_idx
= LLVMBuildOr(ctx
->ac
.builder
, vertex_idx
,
2770 LLVMBuildMul(ctx
->ac
.builder
, wave_idx
,
2771 LLVMConstInt(ctx
->i32
, ctx
->ac
.wave_size
, false), ""), "");
2772 lds_base
= LLVMBuildMul(ctx
->ac
.builder
, vertex_idx
,
2773 LLVMConstInt(ctx
->i32
, itemsize_dw
, 0), "");
2776 for (i
= 0; i
< info
->num_outputs
; i
++) {
2779 if (info
->output_semantic_name
[i
] == TGSI_SEMANTIC_VIEWPORT_INDEX
||
2780 info
->output_semantic_name
[i
] == TGSI_SEMANTIC_LAYER
)
2783 param
= si_shader_io_get_unique_index(info
->output_semantic_name
[i
],
2784 info
->output_semantic_index
[i
], false);
2786 for (chan
= 0; chan
< 4; chan
++) {
2787 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
2790 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
2791 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
2793 /* GFX9 has the ESGS ring in LDS. */
2794 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
2795 LLVMValueRef idx
= LLVMConstInt(ctx
->i32
, param
* 4 + chan
, false);
2796 idx
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
, idx
, "");
2797 ac_build_indexed_store(&ctx
->ac
, ctx
->esgs_ring
, idx
, out_val
);
2801 ac_build_buffer_store_dword(&ctx
->ac
,
2804 ac_get_arg(&ctx
->ac
, ctx
->es2gs_offset
),
2805 (4 * param
+ chan
) * 4,
2806 ac_glc
| ac_slc
| ac_swizzled
);
2810 if (ctx
->screen
->info
.chip_class
>= GFX9
)
2811 si_set_es_return_value_for_gs(ctx
);
2814 static LLVMValueRef
si_get_gs_wave_id(struct si_shader_context
*ctx
)
2816 if (ctx
->screen
->info
.chip_class
>= GFX9
)
2817 return si_unpack_param(ctx
, ctx
->merged_wave_info
, 16, 8);
2819 return ac_get_arg(&ctx
->ac
, ctx
->gs_wave_id
);
2822 static void emit_gs_epilogue(struct si_shader_context
*ctx
)
2824 if (ctx
->shader
->key
.as_ngg
) {
2825 gfx10_ngg_gs_emit_epilogue(ctx
);
2829 if (ctx
->screen
->info
.chip_class
>= GFX10
)
2830 LLVMBuildFence(ctx
->ac
.builder
, LLVMAtomicOrderingRelease
, false, "");
2832 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_NOP
| AC_SENDMSG_GS_DONE
,
2833 si_get_gs_wave_id(ctx
));
2835 if (ctx
->screen
->info
.chip_class
>= GFX9
)
2836 ac_build_endif(&ctx
->ac
, ctx
->merged_wrap_if_label
);
2839 static void si_llvm_emit_gs_epilogue(struct ac_shader_abi
*abi
,
2840 unsigned max_outputs
,
2841 LLVMValueRef
*addrs
)
2843 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2844 struct si_shader_info UNUSED
*info
= &ctx
->shader
->selector
->info
;
2846 assert(info
->num_outputs
<= max_outputs
);
2848 emit_gs_epilogue(ctx
);
2851 static void si_llvm_emit_vs_epilogue(struct ac_shader_abi
*abi
,
2852 unsigned max_outputs
,
2853 LLVMValueRef
*addrs
)
2855 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2856 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
2857 struct si_shader_output_values
*outputs
= NULL
;
2860 assert(!ctx
->shader
->is_gs_copy_shader
);
2861 assert(info
->num_outputs
<= max_outputs
);
2863 outputs
= MALLOC((info
->num_outputs
+ 1) * sizeof(outputs
[0]));
2865 for (i
= 0; i
< info
->num_outputs
; i
++) {
2866 outputs
[i
].semantic_name
= info
->output_semantic_name
[i
];
2867 outputs
[i
].semantic_index
= info
->output_semantic_index
[i
];
2869 for (j
= 0; j
< 4; j
++) {
2870 outputs
[i
].values
[j
] =
2871 LLVMBuildLoad(ctx
->ac
.builder
,
2874 outputs
[i
].vertex_stream
[j
] =
2875 (info
->output_streams
[i
] >> (2 * j
)) & 3;
2879 if (!ctx
->screen
->use_ngg_streamout
&&
2880 ctx
->shader
->selector
->so
.num_outputs
)
2881 si_llvm_emit_streamout(ctx
, outputs
, i
, 0);
2883 /* Export PrimitiveID. */
2884 if (ctx
->shader
->key
.mono
.u
.vs_export_prim_id
) {
2885 outputs
[i
].semantic_name
= TGSI_SEMANTIC_PRIMID
;
2886 outputs
[i
].semantic_index
= 0;
2887 outputs
[i
].values
[0] = ac_to_float(&ctx
->ac
, si_get_primitive_id(ctx
, 0));
2888 for (j
= 1; j
< 4; j
++)
2889 outputs
[i
].values
[j
] = LLVMConstReal(ctx
->f32
, 0);
2891 memset(outputs
[i
].vertex_stream
, 0,
2892 sizeof(outputs
[i
].vertex_stream
));
2896 si_llvm_export_vs(ctx
, outputs
, i
);
2900 static void si_llvm_emit_prim_discard_cs_epilogue(struct ac_shader_abi
*abi
,
2901 unsigned max_outputs
,
2902 LLVMValueRef
*addrs
)
2904 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
2905 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
2906 LLVMValueRef pos
[4] = {};
2908 assert(info
->num_outputs
<= max_outputs
);
2910 for (unsigned i
= 0; i
< info
->num_outputs
; i
++) {
2911 if (info
->output_semantic_name
[i
] != TGSI_SEMANTIC_POSITION
)
2914 for (unsigned chan
= 0; chan
< 4; chan
++)
2915 pos
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
2918 assert(pos
[0] != NULL
);
2920 /* Return the position output. */
2921 LLVMValueRef ret
= ctx
->return_value
;
2922 for (unsigned chan
= 0; chan
< 4; chan
++)
2923 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, pos
[chan
], chan
, "");
2924 ctx
->return_value
= ret
;
2927 struct si_ps_exports
{
2929 struct ac_export_args args
[10];
2932 static void si_export_mrt_z(struct si_shader_context
*ctx
,
2933 LLVMValueRef depth
, LLVMValueRef stencil
,
2934 LLVMValueRef samplemask
, struct si_ps_exports
*exp
)
2936 struct ac_export_args args
;
2938 ac_export_mrt_z(&ctx
->ac
, depth
, stencil
, samplemask
, &args
);
2940 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
2943 static void si_export_mrt_color(struct si_shader_context
*ctx
,
2944 LLVMValueRef
*color
, unsigned index
,
2945 unsigned samplemask_param
,
2946 bool is_last
, struct si_ps_exports
*exp
)
2951 if (ctx
->shader
->key
.part
.ps
.epilog
.clamp_color
)
2952 for (i
= 0; i
< 4; i
++)
2953 color
[i
] = ac_build_clamp(&ctx
->ac
, color
[i
]);
2956 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_to_one
)
2957 color
[3] = ctx
->ac
.f32_1
;
2961 ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_ALWAYS
)
2962 si_alpha_test(ctx
, color
[3]);
2964 /* Line & polygon smoothing */
2965 if (ctx
->shader
->key
.part
.ps
.epilog
.poly_line_smoothing
)
2966 color
[3] = si_scale_alpha_by_sample_mask(ctx
, color
[3],
2969 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
2970 if (ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
> 0) {
2971 struct ac_export_args args
[8];
2974 /* Get the export arguments, also find out what the last one is. */
2975 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
2976 si_llvm_init_export_args(ctx
, color
,
2977 V_008DFC_SQ_EXP_MRT
+ c
, &args
[c
]);
2978 if (args
[c
].enabled_channels
)
2982 /* Emit all exports. */
2983 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
2984 if (is_last
&& last
== c
) {
2985 args
[c
].valid_mask
= 1; /* whether the EXEC mask is valid */
2986 args
[c
].done
= 1; /* DONE bit */
2987 } else if (!args
[c
].enabled_channels
)
2988 continue; /* unnecessary NULL export */
2990 memcpy(&exp
->args
[exp
->num
++], &args
[c
], sizeof(args
[c
]));
2993 struct ac_export_args args
;
2996 si_llvm_init_export_args(ctx
, color
, V_008DFC_SQ_EXP_MRT
+ index
,
2999 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3000 args
.done
= 1; /* DONE bit */
3001 } else if (!args
.enabled_channels
)
3002 return; /* unnecessary NULL export */
3004 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3008 static void si_emit_ps_exports(struct si_shader_context
*ctx
,
3009 struct si_ps_exports
*exp
)
3011 for (unsigned i
= 0; i
< exp
->num
; i
++)
3012 ac_build_export(&ctx
->ac
, &exp
->args
[i
]);
3016 * Return PS outputs in this order:
3018 * v[0:3] = color0.xyzw
3019 * v[4:7] = color1.xyzw
3024 * vN+3 = SampleMaskIn (used for OpenGL smoothing)
3026 * The alpha-ref SGPR is returned via its original location.
3028 static void si_llvm_return_fs_outputs(struct ac_shader_abi
*abi
,
3029 unsigned max_outputs
,
3030 LLVMValueRef
*addrs
)
3032 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3033 struct si_shader
*shader
= ctx
->shader
;
3034 struct si_shader_info
*info
= &shader
->selector
->info
;
3035 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3036 unsigned i
, j
, first_vgpr
, vgpr
;
3038 LLVMValueRef color
[8][4] = {};
3039 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
3042 if (ctx
->postponed_kill
)
3043 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildLoad(builder
, ctx
->postponed_kill
, ""));
3045 /* Read the output values. */
3046 for (i
= 0; i
< info
->num_outputs
; i
++) {
3047 unsigned semantic_name
= info
->output_semantic_name
[i
];
3048 unsigned semantic_index
= info
->output_semantic_index
[i
];
3050 switch (semantic_name
) {
3051 case TGSI_SEMANTIC_COLOR
:
3052 assert(semantic_index
< 8);
3053 for (j
= 0; j
< 4; j
++) {
3054 LLVMValueRef ptr
= addrs
[4 * i
+ j
];
3055 LLVMValueRef result
= LLVMBuildLoad(builder
, ptr
, "");
3056 color
[semantic_index
][j
] = result
;
3059 case TGSI_SEMANTIC_POSITION
:
3060 depth
= LLVMBuildLoad(builder
,
3061 addrs
[4 * i
+ 0], "");
3063 case TGSI_SEMANTIC_STENCIL
:
3064 stencil
= LLVMBuildLoad(builder
,
3065 addrs
[4 * i
+ 0], "");
3067 case TGSI_SEMANTIC_SAMPLEMASK
:
3068 samplemask
= LLVMBuildLoad(builder
,
3069 addrs
[4 * i
+ 0], "");
3072 fprintf(stderr
, "Warning: GFX6 unhandled fs output type:%d\n",
3077 /* Fill the return structure. */
3078 ret
= ctx
->return_value
;
3081 ret
= LLVMBuildInsertValue(builder
, ret
,
3082 ac_to_integer(&ctx
->ac
,
3083 LLVMGetParam(ctx
->main_fn
,
3084 SI_PARAM_ALPHA_REF
)),
3085 SI_SGPR_ALPHA_REF
, "");
3088 first_vgpr
= vgpr
= SI_SGPR_ALPHA_REF
+ 1;
3089 for (i
= 0; i
< ARRAY_SIZE(color
); i
++) {
3093 for (j
= 0; j
< 4; j
++)
3094 ret
= LLVMBuildInsertValue(builder
, ret
, color
[i
][j
], vgpr
++, "");
3097 ret
= LLVMBuildInsertValue(builder
, ret
, depth
, vgpr
++, "");
3099 ret
= LLVMBuildInsertValue(builder
, ret
, stencil
, vgpr
++, "");
3101 ret
= LLVMBuildInsertValue(builder
, ret
, samplemask
, vgpr
++, "");
3103 /* Add the input sample mask for smoothing at the end. */
3104 if (vgpr
< first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
)
3105 vgpr
= first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
;
3106 ret
= LLVMBuildInsertValue(builder
, ret
,
3107 LLVMGetParam(ctx
->main_fn
,
3108 SI_PARAM_SAMPLE_COVERAGE
), vgpr
++, "");
3110 ctx
->return_value
= ret
;
3113 /* Emit one vertex from the geometry shader */
3114 static void si_llvm_emit_vertex(struct ac_shader_abi
*abi
,
3116 LLVMValueRef
*addrs
)
3118 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3120 if (ctx
->shader
->key
.as_ngg
) {
3121 gfx10_ngg_gs_emit_vertex(ctx
, stream
, addrs
);
3125 struct si_shader_info
*info
= &ctx
->shader
->selector
->info
;
3126 struct si_shader
*shader
= ctx
->shader
;
3127 LLVMValueRef soffset
= ac_get_arg(&ctx
->ac
, ctx
->gs2vs_offset
);
3128 LLVMValueRef gs_next_vertex
;
3129 LLVMValueRef can_emit
;
3130 unsigned chan
, offset
;
3133 /* Write vertex attribute values to GSVS ring */
3134 gs_next_vertex
= LLVMBuildLoad(ctx
->ac
.builder
,
3135 ctx
->gs_next_vertex
[stream
],
3138 /* If this thread has already emitted the declared maximum number of
3139 * vertices, skip the write: excessive vertex emissions are not
3140 * supposed to have any effect.
3142 * If the shader has no writes to memory, kill it instead. This skips
3143 * further memory loads and may allow LLVM to skip to the end
3146 can_emit
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, gs_next_vertex
,
3147 LLVMConstInt(ctx
->i32
,
3148 shader
->selector
->gs_max_out_vertices
, 0), "");
3150 bool use_kill
= !info
->writes_memory
;
3152 ac_build_kill_if_false(&ctx
->ac
, can_emit
);
3154 ac_build_ifcc(&ctx
->ac
, can_emit
, 6505);
3158 for (i
= 0; i
< info
->num_outputs
; i
++) {
3159 for (chan
= 0; chan
< 4; chan
++) {
3160 if (!(info
->output_usagemask
[i
] & (1 << chan
)) ||
3161 ((info
->output_streams
[i
] >> (2 * chan
)) & 3) != stream
)
3164 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
3165 LLVMValueRef voffset
=
3166 LLVMConstInt(ctx
->i32
, offset
*
3167 shader
->selector
->gs_max_out_vertices
, 0);
3170 voffset
= LLVMBuildAdd(ctx
->ac
.builder
, voffset
, gs_next_vertex
, "");
3171 voffset
= LLVMBuildMul(ctx
->ac
.builder
, voffset
,
3172 LLVMConstInt(ctx
->i32
, 4, 0), "");
3174 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
3176 ac_build_buffer_store_dword(&ctx
->ac
,
3177 ctx
->gsvs_ring
[stream
],
3179 voffset
, soffset
, 0,
3180 ac_glc
| ac_slc
| ac_swizzled
);
3184 gs_next_vertex
= LLVMBuildAdd(ctx
->ac
.builder
, gs_next_vertex
, ctx
->i32_1
, "");
3185 LLVMBuildStore(ctx
->ac
.builder
, gs_next_vertex
, ctx
->gs_next_vertex
[stream
]);
3187 /* Signal vertex emission if vertex data was written. */
3189 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_EMIT
| AC_SENDMSG_GS
| (stream
<< 8),
3190 si_get_gs_wave_id(ctx
));
3194 ac_build_endif(&ctx
->ac
, 6505);
3197 /* Cut one primitive from the geometry shader */
3198 static void si_llvm_emit_primitive(struct ac_shader_abi
*abi
,
3201 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3203 if (ctx
->shader
->key
.as_ngg
) {
3204 LLVMBuildStore(ctx
->ac
.builder
, ctx
->ac
.i32_0
, ctx
->gs_curprim_verts
[stream
]);
3208 /* Signal primitive cut */
3209 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_CUT
| AC_SENDMSG_GS
| (stream
<< 8),
3210 si_get_gs_wave_id(ctx
));
3213 static void si_llvm_emit_barrier(struct si_shader_context
*ctx
)
3215 /* GFX6 only (thanks to a hw bug workaround):
3216 * The real barrier instruction isn’t needed, because an entire patch
3217 * always fits into a single wave.
3219 if (ctx
->screen
->info
.chip_class
== GFX6
&&
3220 ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
3221 ac_build_waitcnt(&ctx
->ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
3225 ac_build_s_barrier(&ctx
->ac
);
3228 static void declare_streamout_params(struct si_shader_context
*ctx
,
3229 struct pipe_stream_output_info
*so
)
3231 if (ctx
->screen
->use_ngg_streamout
) {
3232 if (ctx
->type
== PIPE_SHADER_TESS_EVAL
)
3233 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
3237 /* Streamout SGPRs. */
3238 if (so
->num_outputs
) {
3239 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->streamout_config
);
3240 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->streamout_write_index
);
3241 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
3242 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
3245 /* A streamout buffer offset is loaded if the stride is non-zero. */
3246 for (int i
= 0; i
< 4; i
++) {
3250 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->streamout_offset
[i
]);
3254 static unsigned si_get_max_workgroup_size(const struct si_shader
*shader
)
3256 switch (shader
->selector
->type
) {
3257 case PIPE_SHADER_VERTEX
:
3258 case PIPE_SHADER_TESS_EVAL
:
3259 return shader
->key
.as_ngg
? 128 : 0;
3261 case PIPE_SHADER_TESS_CTRL
:
3262 /* Return this so that LLVM doesn't remove s_barrier
3263 * instructions on chips where we use s_barrier. */
3264 return shader
->selector
->screen
->info
.chip_class
>= GFX7
? 128 : 0;
3266 case PIPE_SHADER_GEOMETRY
:
3267 return shader
->selector
->screen
->info
.chip_class
>= GFX9
? 128 : 0;
3269 case PIPE_SHADER_COMPUTE
:
3270 break; /* see below */
3276 const unsigned *properties
= shader
->selector
->info
.properties
;
3277 unsigned max_work_group_size
=
3278 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] *
3279 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
] *
3280 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
];
3282 if (!max_work_group_size
) {
3283 /* This is a variable group size compute shader,
3284 * compile it for the maximum possible group size.
3286 max_work_group_size
= SI_MAX_VARIABLE_THREADS_PER_BLOCK
;
3288 return max_work_group_size
;
3291 static void declare_const_and_shader_buffers(struct si_shader_context
*ctx
,
3294 enum ac_arg_type const_shader_buf_type
;
3296 if (ctx
->shader
->selector
->info
.const_buffers_declared
== 1 &&
3297 ctx
->shader
->selector
->info
.shader_buffers_declared
== 0)
3298 const_shader_buf_type
= AC_ARG_CONST_FLOAT_PTR
;
3300 const_shader_buf_type
= AC_ARG_CONST_DESC_PTR
;
3302 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, const_shader_buf_type
,
3303 assign_params
? &ctx
->const_and_shader_buffers
:
3304 &ctx
->other_const_and_shader_buffers
);
3307 static void declare_samplers_and_images(struct si_shader_context
*ctx
,
3310 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_CONST_IMAGE_PTR
,
3311 assign_params
? &ctx
->samplers_and_images
:
3312 &ctx
->other_samplers_and_images
);
3315 static void declare_per_stage_desc_pointers(struct si_shader_context
*ctx
,
3318 declare_const_and_shader_buffers(ctx
, assign_params
);
3319 declare_samplers_and_images(ctx
, assign_params
);
3322 static void declare_global_desc_pointers(struct si_shader_context
*ctx
)
3324 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_CONST_DESC_PTR
,
3326 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_CONST_IMAGE_PTR
,
3327 &ctx
->bindless_samplers_and_images
);
3330 static void declare_vs_specific_input_sgprs(struct si_shader_context
*ctx
)
3332 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->vs_state_bits
);
3333 if (!ctx
->shader
->is_gs_copy_shader
) {
3334 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->args
.base_vertex
);
3335 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->args
.start_instance
);
3336 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->args
.draw_id
);
3340 static void declare_vb_descriptor_input_sgprs(struct si_shader_context
*ctx
)
3342 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_CONST_DESC_PTR
, &ctx
->vertex_buffers
);
3344 unsigned num_vbos_in_user_sgprs
= ctx
->shader
->selector
->num_vbos_in_user_sgprs
;
3345 if (num_vbos_in_user_sgprs
) {
3346 unsigned user_sgprs
= ctx
->args
.num_sgprs_used
;
3348 if (is_merged_shader(ctx
))
3350 assert(user_sgprs
<= SI_SGPR_VS_VB_DESCRIPTOR_FIRST
);
3352 /* Declare unused SGPRs to align VB descriptors to 4 SGPRs (hw requirement). */
3353 for (unsigned i
= user_sgprs
; i
< SI_SGPR_VS_VB_DESCRIPTOR_FIRST
; i
++)
3354 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* unused */
3356 assert(num_vbos_in_user_sgprs
<= ARRAY_SIZE(ctx
->vb_descriptors
));
3357 for (unsigned i
= 0; i
< num_vbos_in_user_sgprs
; i
++)
3358 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 4, AC_ARG_INT
, &ctx
->vb_descriptors
[i
]);
3362 static void declare_vs_input_vgprs(struct si_shader_context
*ctx
,
3363 unsigned *num_prolog_vgprs
)
3365 struct si_shader
*shader
= ctx
->shader
;
3367 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.vertex_id
);
3368 if (shader
->key
.as_ls
) {
3369 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->rel_auto_id
);
3370 if (ctx
->screen
->info
.chip_class
>= GFX10
) {
3371 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* user VGPR */
3372 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.instance_id
);
3374 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.instance_id
);
3375 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* unused */
3377 } else if (ctx
->screen
->info
.chip_class
>= GFX10
) {
3378 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* user VGPR */
3379 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
3380 &ctx
->vs_prim_id
); /* user vgpr or PrimID (legacy) */
3381 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.instance_id
);
3383 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.instance_id
);
3384 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->vs_prim_id
);
3385 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* unused */
3388 if (!shader
->is_gs_copy_shader
) {
3389 /* Vertex load indices. */
3390 if (shader
->selector
->info
.num_inputs
) {
3391 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
3392 &ctx
->vertex_index0
);
3393 for (unsigned i
= 1; i
< shader
->selector
->info
.num_inputs
; i
++)
3394 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
);
3396 *num_prolog_vgprs
+= shader
->selector
->info
.num_inputs
;
3400 static void declare_vs_blit_inputs(struct si_shader_context
*ctx
,
3401 unsigned vs_blit_property
)
3403 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
3404 &ctx
->vs_blit_inputs
); /* i16 x1, y1 */
3405 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* i16 x1, y1 */
3406 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* depth */
3408 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
3409 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* color0 */
3410 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* color1 */
3411 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* color2 */
3412 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* color3 */
3413 } else if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
) {
3414 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.x1 */
3415 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.y1 */
3416 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.x2 */
3417 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.y2 */
3418 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.z */
3419 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
, NULL
); /* texcoord.w */
3423 static void declare_tes_input_vgprs(struct si_shader_context
*ctx
)
3425 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
, &ctx
->tes_u
);
3426 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
, &ctx
->tes_v
);
3427 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->tes_rel_patch_id
);
3428 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.tes_patch_id
);
3432 /* Convenient merged shader definitions. */
3433 SI_SHADER_MERGED_VERTEX_TESSCTRL
= PIPE_SHADER_TYPES
,
3434 SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
,
3437 static void add_arg_checked(struct ac_shader_args
*args
,
3438 enum ac_arg_regfile file
,
3439 unsigned registers
, enum ac_arg_type type
,
3443 assert(args
->arg_count
== idx
);
3444 ac_add_arg(args
, file
, registers
, type
, arg
);
3447 static void create_function(struct si_shader_context
*ctx
)
3449 struct si_shader
*shader
= ctx
->shader
;
3450 LLVMTypeRef returns
[AC_MAX_ARGS
];
3451 unsigned i
, num_return_sgprs
;
3452 unsigned num_returns
= 0;
3453 unsigned num_prolog_vgprs
= 0;
3454 unsigned type
= ctx
->type
;
3455 unsigned vs_blit_property
=
3456 shader
->selector
->info
.properties
[TGSI_PROPERTY_VS_BLIT_SGPRS_AMD
];
3458 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
3460 /* Set MERGED shaders. */
3461 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
3462 if (shader
->key
.as_ls
|| type
== PIPE_SHADER_TESS_CTRL
)
3463 type
= SI_SHADER_MERGED_VERTEX_TESSCTRL
; /* LS or HS */
3464 else if (shader
->key
.as_es
|| shader
->key
.as_ngg
|| type
== PIPE_SHADER_GEOMETRY
)
3465 type
= SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
;
3469 case PIPE_SHADER_VERTEX
:
3470 declare_global_desc_pointers(ctx
);
3472 if (vs_blit_property
) {
3473 declare_vs_blit_inputs(ctx
, vs_blit_property
);
3476 declare_vs_input_vgprs(ctx
, &num_prolog_vgprs
);
3480 declare_per_stage_desc_pointers(ctx
, true);
3481 declare_vs_specific_input_sgprs(ctx
);
3482 if (!shader
->is_gs_copy_shader
)
3483 declare_vb_descriptor_input_sgprs(ctx
);
3485 if (shader
->key
.as_es
) {
3486 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
3487 &ctx
->es2gs_offset
);
3488 } else if (shader
->key
.as_ls
) {
3489 /* no extra parameters */
3491 /* The locations of the other parameters are assigned dynamically. */
3492 declare_streamout_params(ctx
, &shader
->selector
->so
);
3496 declare_vs_input_vgprs(ctx
, &num_prolog_vgprs
);
3499 if (shader
->key
.opt
.vs_as_prim_discard_cs
) {
3500 for (i
= 0; i
< 4; i
++)
3501 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
3505 case PIPE_SHADER_TESS_CTRL
: /* GFX6-GFX8 */
3506 declare_global_desc_pointers(ctx
);
3507 declare_per_stage_desc_pointers(ctx
, true);
3508 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_layout
);
3509 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_out_lds_offsets
);
3510 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_out_lds_layout
);
3511 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->vs_state_bits
);
3512 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_offset
);
3513 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_factor_offset
);
3516 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.tcs_patch_id
);
3517 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.tcs_rel_ids
);
3519 /* param_tcs_offchip_offset and param_tcs_factor_offset are
3520 * placed after the user SGPRs.
3522 for (i
= 0; i
< GFX6_TCS_NUM_USER_SGPR
+ 2; i
++)
3523 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
3524 for (i
= 0; i
< 11; i
++)
3525 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
3528 case SI_SHADER_MERGED_VERTEX_TESSCTRL
:
3529 /* Merged stages have 8 system SGPRs at the beginning. */
3530 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_HS */
3531 declare_per_stage_desc_pointers(ctx
,
3532 ctx
->type
== PIPE_SHADER_TESS_CTRL
);
3533 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_offset
);
3534 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->merged_wave_info
);
3535 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_factor_offset
);
3536 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->merged_scratch_offset
);
3537 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* unused */
3538 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* unused */
3540 declare_global_desc_pointers(ctx
);
3541 declare_per_stage_desc_pointers(ctx
,
3542 ctx
->type
== PIPE_SHADER_VERTEX
);
3543 declare_vs_specific_input_sgprs(ctx
);
3545 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_layout
);
3546 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_out_lds_offsets
);
3547 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_out_lds_layout
);
3548 declare_vb_descriptor_input_sgprs(ctx
);
3550 /* VGPRs (first TCS, then VS) */
3551 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.tcs_patch_id
);
3552 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.tcs_rel_ids
);
3554 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
3555 declare_vs_input_vgprs(ctx
, &num_prolog_vgprs
);
3557 /* LS return values are inputs to the TCS main shader part. */
3558 for (i
= 0; i
< 8 + GFX9_TCS_NUM_USER_SGPR
; i
++)
3559 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
3560 for (i
= 0; i
< 2; i
++)
3561 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
3563 /* TCS return values are inputs to the TCS epilog.
3565 * param_tcs_offchip_offset, param_tcs_factor_offset,
3566 * param_tcs_offchip_layout, and param_rw_buffers
3567 * should be passed to the epilog.
3569 for (i
= 0; i
<= 8 + GFX9_SGPR_TCS_OUT_LAYOUT
; i
++)
3570 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
3571 for (i
= 0; i
< 11; i
++)
3572 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
3576 case SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
:
3577 /* Merged stages have 8 system SGPRs at the beginning. */
3578 /* SPI_SHADER_USER_DATA_ADDR_LO/HI_GS */
3579 declare_per_stage_desc_pointers(ctx
,
3580 ctx
->type
== PIPE_SHADER_GEOMETRY
);
3582 if (ctx
->shader
->key
.as_ngg
)
3583 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->gs_tg_info
);
3585 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->gs2vs_offset
);
3587 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->merged_wave_info
);
3588 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_offset
);
3589 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->merged_scratch_offset
);
3590 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* unused (SPI_SHADER_PGM_LO/HI_GS << 8) */
3591 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* unused (SPI_SHADER_PGM_LO/HI_GS >> 24) */
3593 declare_global_desc_pointers(ctx
);
3594 if (ctx
->type
!= PIPE_SHADER_VERTEX
|| !vs_blit_property
) {
3595 declare_per_stage_desc_pointers(ctx
,
3596 (ctx
->type
== PIPE_SHADER_VERTEX
||
3597 ctx
->type
== PIPE_SHADER_TESS_EVAL
));
3600 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
3601 if (vs_blit_property
)
3602 declare_vs_blit_inputs(ctx
, vs_blit_property
);
3604 declare_vs_specific_input_sgprs(ctx
);
3606 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->vs_state_bits
);
3607 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_layout
);
3608 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tes_offchip_addr
);
3609 /* Declare as many input SGPRs as the VS has. */
3612 if (ctx
->type
== PIPE_SHADER_VERTEX
)
3613 declare_vb_descriptor_input_sgprs(ctx
);
3615 /* VGPRs (first GS, then VS/TES) */
3616 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx01_offset
);
3617 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx23_offset
);
3618 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.gs_prim_id
);
3619 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.gs_invocation_id
);
3620 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx45_offset
);
3622 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
3623 declare_vs_input_vgprs(ctx
, &num_prolog_vgprs
);
3624 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
3625 declare_tes_input_vgprs(ctx
);
3628 if (ctx
->shader
->key
.as_es
&&
3629 (ctx
->type
== PIPE_SHADER_VERTEX
||
3630 ctx
->type
== PIPE_SHADER_TESS_EVAL
)) {
3631 unsigned num_user_sgprs
;
3633 if (ctx
->type
== PIPE_SHADER_VERTEX
)
3634 num_user_sgprs
= GFX9_VSGS_NUM_USER_SGPR
;
3636 num_user_sgprs
= GFX9_TESGS_NUM_USER_SGPR
;
3638 /* ES return values are inputs to GS. */
3639 for (i
= 0; i
< 8 + num_user_sgprs
; i
++)
3640 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
3641 for (i
= 0; i
< 5; i
++)
3642 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
3646 case PIPE_SHADER_TESS_EVAL
:
3647 declare_global_desc_pointers(ctx
);
3648 declare_per_stage_desc_pointers(ctx
, true);
3649 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->vs_state_bits
);
3650 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_layout
);
3651 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tes_offchip_addr
);
3653 if (shader
->key
.as_es
) {
3654 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_offset
);
3655 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
3656 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->es2gs_offset
);
3658 declare_streamout_params(ctx
, &shader
->selector
->so
);
3659 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->tcs_offchip_offset
);
3663 declare_tes_input_vgprs(ctx
);
3666 case PIPE_SHADER_GEOMETRY
:
3667 declare_global_desc_pointers(ctx
);
3668 declare_per_stage_desc_pointers(ctx
, true);
3669 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->gs2vs_offset
);
3670 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->gs_wave_id
);
3673 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[0]);
3674 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[1]);
3675 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.gs_prim_id
);
3676 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[2]);
3677 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[3]);
3678 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[4]);
3679 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->gs_vtx_offset
[5]);
3680 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &ctx
->args
.gs_invocation_id
);
3683 case PIPE_SHADER_FRAGMENT
:
3684 declare_global_desc_pointers(ctx
);
3685 declare_per_stage_desc_pointers(ctx
, true);
3686 add_arg_checked(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
,
3687 SI_PARAM_ALPHA_REF
);
3688 add_arg_checked(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
3689 &ctx
->args
.prim_mask
, SI_PARAM_PRIM_MASK
);
3691 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
, &ctx
->args
.persp_sample
,
3692 SI_PARAM_PERSP_SAMPLE
);
3693 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
,
3694 &ctx
->args
.persp_center
, SI_PARAM_PERSP_CENTER
);
3695 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
,
3696 &ctx
->args
.persp_centroid
, SI_PARAM_PERSP_CENTROID
);
3697 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 3, AC_ARG_INT
,
3698 NULL
, SI_PARAM_PERSP_PULL_MODEL
);
3699 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
,
3700 &ctx
->args
.linear_sample
, SI_PARAM_LINEAR_SAMPLE
);
3701 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
,
3702 &ctx
->args
.linear_center
, SI_PARAM_LINEAR_CENTER
);
3703 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 2, AC_ARG_INT
,
3704 &ctx
->args
.linear_centroid
, SI_PARAM_LINEAR_CENTROID
);
3705 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 3, AC_ARG_FLOAT
,
3706 NULL
, SI_PARAM_LINE_STIPPLE_TEX
);
3707 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
,
3708 &ctx
->args
.frag_pos
[0], SI_PARAM_POS_X_FLOAT
);
3709 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
,
3710 &ctx
->args
.frag_pos
[1], SI_PARAM_POS_Y_FLOAT
);
3711 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
,
3712 &ctx
->args
.frag_pos
[2], SI_PARAM_POS_Z_FLOAT
);
3713 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
,
3714 &ctx
->args
.frag_pos
[3], SI_PARAM_POS_W_FLOAT
);
3715 shader
->info
.face_vgpr_index
= ctx
->args
.num_vgprs_used
;
3716 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
3717 &ctx
->args
.front_face
, SI_PARAM_FRONT_FACE
);
3718 shader
->info
.ancillary_vgpr_index
= ctx
->args
.num_vgprs_used
;
3719 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
3720 &ctx
->args
.ancillary
, SI_PARAM_ANCILLARY
);
3721 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
,
3722 &ctx
->args
.sample_coverage
, SI_PARAM_SAMPLE_COVERAGE
);
3723 add_arg_checked(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
3724 &ctx
->pos_fixed_pt
, SI_PARAM_POS_FIXED_PT
);
3726 /* Color inputs from the prolog. */
3727 if (shader
->selector
->info
.colors_read
) {
3728 unsigned num_color_elements
=
3729 util_bitcount(shader
->selector
->info
.colors_read
);
3731 for (i
= 0; i
< num_color_elements
; i
++)
3732 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
, NULL
);
3734 num_prolog_vgprs
+= num_color_elements
;
3737 /* Outputs for the epilog. */
3738 num_return_sgprs
= SI_SGPR_ALPHA_REF
+ 1;
3741 util_bitcount(shader
->selector
->info
.colors_written
) * 4 +
3742 shader
->selector
->info
.writes_z
+
3743 shader
->selector
->info
.writes_stencil
+
3744 shader
->selector
->info
.writes_samplemask
+
3745 1 /* SampleMaskIn */;
3747 num_returns
= MAX2(num_returns
,
3749 PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
3751 for (i
= 0; i
< num_return_sgprs
; i
++)
3752 returns
[i
] = ctx
->i32
;
3753 for (; i
< num_returns
; i
++)
3754 returns
[i
] = ctx
->f32
;
3757 case PIPE_SHADER_COMPUTE
:
3758 declare_global_desc_pointers(ctx
);
3759 declare_per_stage_desc_pointers(ctx
, true);
3760 if (shader
->selector
->info
.uses_grid_size
)
3761 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 3, AC_ARG_INT
,
3762 &ctx
->args
.num_work_groups
);
3763 if (shader
->selector
->info
.uses_block_size
&&
3764 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] == 0)
3765 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 3, AC_ARG_INT
, &ctx
->block_size
);
3767 unsigned cs_user_data_dwords
=
3768 shader
->selector
->info
.properties
[TGSI_PROPERTY_CS_USER_DATA_COMPONENTS_AMD
];
3769 if (cs_user_data_dwords
) {
3770 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, cs_user_data_dwords
, AC_ARG_INT
,
3771 &ctx
->cs_user_data
);
3774 /* Hardware SGPRs. */
3775 for (i
= 0; i
< 3; i
++) {
3776 if (shader
->selector
->info
.uses_block_id
[i
]) {
3777 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
3778 &ctx
->args
.workgroup_ids
[i
]);
3781 if (shader
->selector
->info
.uses_subgroup_info
)
3782 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->args
.tg_size
);
3784 /* Hardware VGPRs. */
3785 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 3, AC_ARG_INT
,
3786 &ctx
->args
.local_invocation_ids
);
3789 assert(0 && "unimplemented shader");
3793 si_llvm_create_func(ctx
, "main", returns
, num_returns
,
3794 si_get_max_workgroup_size(shader
));
3796 /* Reserve register locations for VGPR inputs the PS prolog may need. */
3797 if (ctx
->type
== PIPE_SHADER_FRAGMENT
&& !ctx
->shader
->is_monolithic
) {
3798 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
3799 "InitialPSInputAddr",
3800 S_0286D0_PERSP_SAMPLE_ENA(1) |
3801 S_0286D0_PERSP_CENTER_ENA(1) |
3802 S_0286D0_PERSP_CENTROID_ENA(1) |
3803 S_0286D0_LINEAR_SAMPLE_ENA(1) |
3804 S_0286D0_LINEAR_CENTER_ENA(1) |
3805 S_0286D0_LINEAR_CENTROID_ENA(1) |
3806 S_0286D0_FRONT_FACE_ENA(1) |
3807 S_0286D0_ANCILLARY_ENA(1) |
3808 S_0286D0_POS_FIXED_PT_ENA(1));
3811 shader
->info
.num_input_sgprs
= ctx
->args
.num_sgprs_used
;
3812 shader
->info
.num_input_vgprs
= ctx
->args
.num_vgprs_used
;
3814 assert(shader
->info
.num_input_vgprs
>= num_prolog_vgprs
);
3815 shader
->info
.num_input_vgprs
-= num_prolog_vgprs
;
3817 if (shader
->key
.as_ls
|| ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
3818 if (USE_LDS_SYMBOLS
&& LLVM_VERSION_MAJOR
>= 9) {
3819 /* The LSHS size is not known until draw time, so we append it
3820 * at the end of whatever LDS use there may be in the rest of
3821 * the shader (currently none, unless LLVM decides to do its
3822 * own LDS-based lowering).
3824 ctx
->ac
.lds
= LLVMAddGlobalInAddressSpace(
3825 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
3826 "__lds_end", AC_ADDR_SPACE_LDS
);
3827 LLVMSetAlignment(ctx
->ac
.lds
, 256);
3829 ac_declare_lds_as_pointer(&ctx
->ac
);
3833 /* Unlike radv, we override these arguments in the prolog, so to the
3834 * API shader they appear as normal arguments.
3836 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
3837 ctx
->abi
.vertex_id
= ac_get_arg(&ctx
->ac
, ctx
->args
.vertex_id
);
3838 ctx
->abi
.instance_id
= ac_get_arg(&ctx
->ac
, ctx
->args
.instance_id
);
3839 } else if (ctx
->type
== PIPE_SHADER_FRAGMENT
) {
3840 ctx
->abi
.persp_centroid
= ac_get_arg(&ctx
->ac
, ctx
->args
.persp_centroid
);
3841 ctx
->abi
.linear_centroid
= ac_get_arg(&ctx
->ac
, ctx
->args
.linear_centroid
);
3845 /* Ensure that the esgs ring is declared.
3847 * We declare it with 64KB alignment as a hint that the
3848 * pointer value will always be 0.
3850 static void declare_esgs_ring(struct si_shader_context
*ctx
)
3855 assert(!LLVMGetNamedGlobal(ctx
->ac
.module
, "esgs_ring"));
3857 ctx
->esgs_ring
= LLVMAddGlobalInAddressSpace(
3858 ctx
->ac
.module
, LLVMArrayType(ctx
->i32
, 0),
3861 LLVMSetLinkage(ctx
->esgs_ring
, LLVMExternalLinkage
);
3862 LLVMSetAlignment(ctx
->esgs_ring
, 64 * 1024);
3866 * Load ESGS and GSVS ring buffer resource descriptors and save the variables
3869 static void preload_ring_buffers(struct si_shader_context
*ctx
)
3871 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3873 LLVMValueRef buf_ptr
= ac_get_arg(&ctx
->ac
, ctx
->rw_buffers
);
3875 if (ctx
->shader
->key
.as_es
|| ctx
->type
== PIPE_SHADER_GEOMETRY
) {
3876 if (ctx
->screen
->info
.chip_class
<= GFX8
) {
3878 ctx
->type
== PIPE_SHADER_GEOMETRY
? SI_GS_RING_ESGS
3880 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, ring
, 0);
3883 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
3885 if (USE_LDS_SYMBOLS
&& LLVM_VERSION_MAJOR
>= 9) {
3886 /* Declare the ESGS ring as an explicit LDS symbol. */
3887 declare_esgs_ring(ctx
);
3889 ac_declare_lds_as_pointer(&ctx
->ac
);
3890 ctx
->esgs_ring
= ctx
->ac
.lds
;
3895 if (ctx
->shader
->is_gs_copy_shader
) {
3896 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
3899 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
3900 } else if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
3901 const struct si_shader_selector
*sel
= ctx
->shader
->selector
;
3902 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
3903 LLVMValueRef base_ring
;
3905 base_ring
= ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
3907 /* The conceptual layout of the GSVS ring is
3908 * v0c0 .. vLv0 v0c1 .. vLc1 ..
3909 * but the real memory layout is swizzled across
3911 * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL
3913 * Override the buffer descriptor accordingly.
3915 LLVMTypeRef v2i64
= LLVMVectorType(ctx
->i64
, 2);
3916 uint64_t stream_offset
= 0;
3918 for (unsigned stream
= 0; stream
< 4; ++stream
) {
3919 unsigned num_components
;
3921 unsigned num_records
;
3922 LLVMValueRef ring
, tmp
;
3924 num_components
= sel
->info
.num_stream_output_components
[stream
];
3925 if (!num_components
)
3928 stride
= 4 * num_components
* sel
->gs_max_out_vertices
;
3930 /* Limit on the stride field for <= GFX7. */
3931 assert(stride
< (1 << 14));
3933 num_records
= ctx
->ac
.wave_size
;
3935 ring
= LLVMBuildBitCast(builder
, base_ring
, v2i64
, "");
3936 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_0
, "");
3937 tmp
= LLVMBuildAdd(builder
, tmp
,
3938 LLVMConstInt(ctx
->i64
,
3939 stream_offset
, 0), "");
3940 stream_offset
+= stride
* ctx
->ac
.wave_size
;
3942 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_0
, "");
3943 ring
= LLVMBuildBitCast(builder
, ring
, ctx
->v4i32
, "");
3944 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_1
, "");
3945 tmp
= LLVMBuildOr(builder
, tmp
,
3946 LLVMConstInt(ctx
->i32
,
3947 S_008F04_STRIDE(stride
) |
3948 S_008F04_SWIZZLE_ENABLE(1), 0), "");
3949 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_1
, "");
3950 ring
= LLVMBuildInsertElement(builder
, ring
,
3951 LLVMConstInt(ctx
->i32
, num_records
, 0),
3952 LLVMConstInt(ctx
->i32
, 2, 0), "");
3955 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
3956 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
3957 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
3958 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
3959 S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */
3960 S_008F0C_ADD_TID_ENABLE(1);
3962 if (ctx
->ac
.chip_class
>= GFX10
) {
3963 rsrc3
|= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT
) |
3964 S_008F0C_OOB_SELECT(V_008F0C_OOB_SELECT_DISABLED
) |
3965 S_008F0C_RESOURCE_LEVEL(1);
3967 rsrc3
|= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
3968 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
) |
3969 S_008F0C_ELEMENT_SIZE(1); /* element_size = 4 (bytes) */
3972 ring
= LLVMBuildInsertElement(builder
, ring
,
3973 LLVMConstInt(ctx
->i32
, rsrc3
, false),
3974 LLVMConstInt(ctx
->i32
, 3, 0), "");
3976 ctx
->gsvs_ring
[stream
] = ring
;
3978 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
3979 ctx
->tess_offchip_ring
= get_tess_ring_descriptor(ctx
, TESS_OFFCHIP_RING_TES
);
3983 static void si_llvm_emit_polygon_stipple(struct si_shader_context
*ctx
,
3984 LLVMValueRef param_rw_buffers
,
3985 struct ac_arg param_pos_fixed_pt
)
3987 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3988 LLVMValueRef slot
, desc
, offset
, row
, bit
, address
[2];
3990 /* Use the fixed-point gl_FragCoord input.
3991 * Since the stipple pattern is 32x32 and it repeats, just get 5 bits
3992 * per coordinate to get the repeating effect.
3994 address
[0] = si_unpack_param(ctx
, param_pos_fixed_pt
, 0, 5);
3995 address
[1] = si_unpack_param(ctx
, param_pos_fixed_pt
, 16, 5);
3997 /* Load the buffer descriptor. */
3998 slot
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_POLY_STIPPLE
, 0);
3999 desc
= ac_build_load_to_sgpr(&ctx
->ac
, param_rw_buffers
, slot
);
4001 /* The stipple pattern is 32x32, each row has 32 bits. */
4002 offset
= LLVMBuildMul(builder
, address
[1],
4003 LLVMConstInt(ctx
->i32
, 4, 0), "");
4004 row
= buffer_load_const(ctx
, desc
, offset
);
4005 row
= ac_to_integer(&ctx
->ac
, row
);
4006 bit
= LLVMBuildLShr(builder
, row
, address
[0], "");
4007 bit
= LLVMBuildTrunc(builder
, bit
, ctx
->i1
, "");
4008 ac_build_kill_if_false(&ctx
->ac
, bit
);
4011 /* For the UMR disassembler. */
4012 #define DEBUGGER_END_OF_CODE_MARKER 0xbf9f0000 /* invalid instruction */
4013 #define DEBUGGER_NUM_MARKERS 5
4015 static bool si_shader_binary_open(struct si_screen
*screen
,
4016 struct si_shader
*shader
,
4017 struct ac_rtld_binary
*rtld
)
4019 const struct si_shader_selector
*sel
= shader
->selector
;
4020 const char *part_elfs
[5];
4021 size_t part_sizes
[5];
4022 unsigned num_parts
= 0;
4024 #define add_part(shader_or_part) \
4025 if (shader_or_part) { \
4026 part_elfs[num_parts] = (shader_or_part)->binary.elf_buffer; \
4027 part_sizes[num_parts] = (shader_or_part)->binary.elf_size; \
4031 add_part(shader
->prolog
);
4032 add_part(shader
->previous_stage
);
4033 add_part(shader
->prolog2
);
4035 add_part(shader
->epilog
);
4039 struct ac_rtld_symbol lds_symbols
[2];
4040 unsigned num_lds_symbols
= 0;
4042 if (sel
&& screen
->info
.chip_class
>= GFX9
&& !shader
->is_gs_copy_shader
&&
4043 (sel
->type
== PIPE_SHADER_GEOMETRY
|| shader
->key
.as_ngg
)) {
4044 /* We add this symbol even on LLVM <= 8 to ensure that
4045 * shader->config.lds_size is set correctly below.
4047 struct ac_rtld_symbol
*sym
= &lds_symbols
[num_lds_symbols
++];
4048 sym
->name
= "esgs_ring";
4049 sym
->size
= shader
->gs_info
.esgs_ring_size
;
4050 sym
->align
= 64 * 1024;
4053 if (shader
->key
.as_ngg
&& sel
->type
== PIPE_SHADER_GEOMETRY
) {
4054 struct ac_rtld_symbol
*sym
= &lds_symbols
[num_lds_symbols
++];
4055 sym
->name
= "ngg_emit";
4056 sym
->size
= shader
->ngg
.ngg_emit_size
* 4;
4060 bool ok
= ac_rtld_open(rtld
, (struct ac_rtld_open_info
){
4061 .info
= &screen
->info
,
4063 .halt_at_entry
= screen
->options
.halt_shaders
,
4065 .shader_type
= tgsi_processor_to_shader_stage(sel
->type
),
4066 .wave_size
= si_get_shader_wave_size(shader
),
4067 .num_parts
= num_parts
,
4068 .elf_ptrs
= part_elfs
,
4069 .elf_sizes
= part_sizes
,
4070 .num_shared_lds_symbols
= num_lds_symbols
,
4071 .shared_lds_symbols
= lds_symbols
});
4073 if (rtld
->lds_size
> 0) {
4074 unsigned alloc_granularity
= screen
->info
.chip_class
>= GFX7
? 512 : 256;
4075 shader
->config
.lds_size
=
4076 align(rtld
->lds_size
, alloc_granularity
) / alloc_granularity
;
4082 static unsigned si_get_shader_binary_size(struct si_screen
*screen
, struct si_shader
*shader
)
4084 struct ac_rtld_binary rtld
;
4085 si_shader_binary_open(screen
, shader
, &rtld
);
4086 return rtld
.exec_size
;
4089 static bool si_get_external_symbol(void *data
, const char *name
, uint64_t *value
)
4091 uint64_t *scratch_va
= data
;
4093 if (!strcmp(scratch_rsrc_dword0_symbol
, name
)) {
4094 *value
= (uint32_t)*scratch_va
;
4097 if (!strcmp(scratch_rsrc_dword1_symbol
, name
)) {
4098 /* Enable scratch coalescing. */
4099 *value
= S_008F04_BASE_ADDRESS_HI(*scratch_va
>> 32) |
4100 S_008F04_SWIZZLE_ENABLE(1);
4107 bool si_shader_binary_upload(struct si_screen
*sscreen
, struct si_shader
*shader
,
4108 uint64_t scratch_va
)
4110 struct ac_rtld_binary binary
;
4111 if (!si_shader_binary_open(sscreen
, shader
, &binary
))
4114 si_resource_reference(&shader
->bo
, NULL
);
4115 shader
->bo
= si_aligned_buffer_create(&sscreen
->b
,
4116 sscreen
->info
.cpdma_prefetch_writes_memory
?
4117 0 : SI_RESOURCE_FLAG_READ_ONLY
,
4118 PIPE_USAGE_IMMUTABLE
,
4119 align(binary
.rx_size
, SI_CPDMA_ALIGNMENT
),
4125 struct ac_rtld_upload_info u
= {};
4127 u
.get_external_symbol
= si_get_external_symbol
;
4128 u
.cb_data
= &scratch_va
;
4129 u
.rx_va
= shader
->bo
->gpu_address
;
4130 u
.rx_ptr
= sscreen
->ws
->buffer_map(shader
->bo
->buf
, NULL
,
4131 PIPE_TRANSFER_READ_WRITE
|
4132 PIPE_TRANSFER_UNSYNCHRONIZED
|
4133 RADEON_TRANSFER_TEMPORARY
);
4137 bool ok
= ac_rtld_upload(&u
);
4139 sscreen
->ws
->buffer_unmap(shader
->bo
->buf
);
4140 ac_rtld_close(&binary
);
4145 static void si_shader_dump_disassembly(struct si_screen
*screen
,
4146 const struct si_shader_binary
*binary
,
4147 enum pipe_shader_type shader_type
,
4149 struct pipe_debug_callback
*debug
,
4150 const char *name
, FILE *file
)
4152 struct ac_rtld_binary rtld_binary
;
4154 if (!ac_rtld_open(&rtld_binary
, (struct ac_rtld_open_info
){
4155 .info
= &screen
->info
,
4156 .shader_type
= tgsi_processor_to_shader_stage(shader_type
),
4157 .wave_size
= wave_size
,
4159 .elf_ptrs
= &binary
->elf_buffer
,
4160 .elf_sizes
= &binary
->elf_size
}))
4166 if (!ac_rtld_get_section_by_name(&rtld_binary
, ".AMDGPU.disasm", &disasm
, &nbytes
))
4169 if (nbytes
> INT_MAX
)
4172 if (debug
&& debug
->debug_message
) {
4173 /* Very long debug messages are cut off, so send the
4174 * disassembly one line at a time. This causes more
4175 * overhead, but on the plus side it simplifies
4176 * parsing of resulting logs.
4178 pipe_debug_message(debug
, SHADER_INFO
,
4179 "Shader Disassembly Begin");
4182 while (line
< nbytes
) {
4183 int count
= nbytes
- line
;
4184 const char *nl
= memchr(disasm
+ line
, '\n', nbytes
- line
);
4186 count
= nl
- (disasm
+ line
);
4189 pipe_debug_message(debug
, SHADER_INFO
,
4190 "%.*s", count
, disasm
+ line
);
4196 pipe_debug_message(debug
, SHADER_INFO
,
4197 "Shader Disassembly End");
4201 fprintf(file
, "Shader %s disassembly:\n", name
);
4202 fprintf(file
, "%*s", (int)nbytes
, disasm
);
4206 ac_rtld_close(&rtld_binary
);
4209 static void si_calculate_max_simd_waves(struct si_shader
*shader
)
4211 struct si_screen
*sscreen
= shader
->selector
->screen
;
4212 struct ac_shader_config
*conf
= &shader
->config
;
4213 unsigned num_inputs
= shader
->selector
->info
.num_inputs
;
4214 unsigned lds_increment
= sscreen
->info
.chip_class
>= GFX7
? 512 : 256;
4215 unsigned lds_per_wave
= 0;
4216 unsigned max_simd_waves
;
4218 max_simd_waves
= sscreen
->info
.max_wave64_per_simd
;
4220 /* Compute LDS usage for PS. */
4221 switch (shader
->selector
->type
) {
4222 case PIPE_SHADER_FRAGMENT
:
4223 /* The minimum usage per wave is (num_inputs * 48). The maximum
4224 * usage is (num_inputs * 48 * 16).
4225 * We can get anything in between and it varies between waves.
4227 * The 48 bytes per input for a single primitive is equal to
4228 * 4 bytes/component * 4 components/input * 3 points.
4230 * Other stages don't know the size at compile time or don't
4231 * allocate LDS per wave, but instead they do it per thread group.
4233 lds_per_wave
= conf
->lds_size
* lds_increment
+
4234 align(num_inputs
* 48, lds_increment
);
4236 case PIPE_SHADER_COMPUTE
:
4237 if (shader
->selector
) {
4238 unsigned max_workgroup_size
=
4239 si_get_max_workgroup_size(shader
);
4240 lds_per_wave
= (conf
->lds_size
* lds_increment
) /
4241 DIV_ROUND_UP(max_workgroup_size
,
4242 sscreen
->compute_wave_size
);
4248 /* Compute the per-SIMD wave counts. */
4249 if (conf
->num_sgprs
) {
4251 MIN2(max_simd_waves
,
4252 sscreen
->info
.num_physical_sgprs_per_simd
/ conf
->num_sgprs
);
4255 if (conf
->num_vgprs
) {
4256 /* Always print wave limits as Wave64, so that we can compare
4257 * Wave32 and Wave64 with shader-db fairly. */
4258 unsigned max_vgprs
= sscreen
->info
.num_physical_wave64_vgprs_per_simd
;
4259 max_simd_waves
= MIN2(max_simd_waves
, max_vgprs
/ conf
->num_vgprs
);
4262 /* LDS is 64KB per CU (4 SIMDs) on GFX6-9, which is 16KB per SIMD (usage above
4263 * 16KB makes some SIMDs unoccupied).
4265 * LDS is 128KB in WGP mode and 64KB in CU mode. Assume the WGP mode is used.
4267 unsigned max_lds_size
= sscreen
->info
.chip_class
>= GFX10
? 128*1024 : 64*1024;
4268 unsigned max_lds_per_simd
= max_lds_size
/ 4;
4270 max_simd_waves
= MIN2(max_simd_waves
, max_lds_per_simd
/ lds_per_wave
);
4272 shader
->info
.max_simd_waves
= max_simd_waves
;
4275 void si_shader_dump_stats_for_shader_db(struct si_screen
*screen
,
4276 struct si_shader
*shader
,
4277 struct pipe_debug_callback
*debug
)
4279 const struct ac_shader_config
*conf
= &shader
->config
;
4281 if (screen
->options
.debug_disassembly
)
4282 si_shader_dump_disassembly(screen
, &shader
->binary
,
4283 shader
->selector
->type
,
4284 si_get_shader_wave_size(shader
),
4285 debug
, "main", NULL
);
4287 pipe_debug_message(debug
, SHADER_INFO
,
4288 "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d "
4289 "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d "
4290 "Spilled VGPRs: %d PrivMem VGPRs: %d",
4291 conf
->num_sgprs
, conf
->num_vgprs
,
4292 si_get_shader_binary_size(screen
, shader
),
4293 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
4294 shader
->info
.max_simd_waves
, conf
->spilled_sgprs
,
4295 conf
->spilled_vgprs
, shader
->info
.private_mem_vgprs
);
4298 static void si_shader_dump_stats(struct si_screen
*sscreen
,
4299 struct si_shader
*shader
,
4301 bool check_debug_option
)
4303 const struct ac_shader_config
*conf
= &shader
->config
;
4305 if (!check_debug_option
||
4306 si_can_dump_shader(sscreen
, shader
->selector
->type
)) {
4307 if (shader
->selector
->type
== PIPE_SHADER_FRAGMENT
) {
4308 fprintf(file
, "*** SHADER CONFIG ***\n"
4309 "SPI_PS_INPUT_ADDR = 0x%04x\n"
4310 "SPI_PS_INPUT_ENA = 0x%04x\n",
4311 conf
->spi_ps_input_addr
, conf
->spi_ps_input_ena
);
4314 fprintf(file
, "*** SHADER STATS ***\n"
4317 "Spilled SGPRs: %d\n"
4318 "Spilled VGPRs: %d\n"
4319 "Private memory VGPRs: %d\n"
4320 "Code Size: %d bytes\n"
4322 "Scratch: %d bytes per wave\n"
4324 "********************\n\n\n",
4325 conf
->num_sgprs
, conf
->num_vgprs
,
4326 conf
->spilled_sgprs
, conf
->spilled_vgprs
,
4327 shader
->info
.private_mem_vgprs
,
4328 si_get_shader_binary_size(sscreen
, shader
),
4329 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
4330 shader
->info
.max_simd_waves
);
4334 const char *si_get_shader_name(const struct si_shader
*shader
)
4336 switch (shader
->selector
->type
) {
4337 case PIPE_SHADER_VERTEX
:
4338 if (shader
->key
.as_es
)
4339 return "Vertex Shader as ES";
4340 else if (shader
->key
.as_ls
)
4341 return "Vertex Shader as LS";
4342 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
4343 return "Vertex Shader as Primitive Discard CS";
4344 else if (shader
->key
.as_ngg
)
4345 return "Vertex Shader as ESGS";
4347 return "Vertex Shader as VS";
4348 case PIPE_SHADER_TESS_CTRL
:
4349 return "Tessellation Control Shader";
4350 case PIPE_SHADER_TESS_EVAL
:
4351 if (shader
->key
.as_es
)
4352 return "Tessellation Evaluation Shader as ES";
4353 else if (shader
->key
.as_ngg
)
4354 return "Tessellation Evaluation Shader as ESGS";
4356 return "Tessellation Evaluation Shader as VS";
4357 case PIPE_SHADER_GEOMETRY
:
4358 if (shader
->is_gs_copy_shader
)
4359 return "GS Copy Shader as VS";
4361 return "Geometry Shader";
4362 case PIPE_SHADER_FRAGMENT
:
4363 return "Pixel Shader";
4364 case PIPE_SHADER_COMPUTE
:
4365 return "Compute Shader";
4367 return "Unknown Shader";
4371 void si_shader_dump(struct si_screen
*sscreen
, struct si_shader
*shader
,
4372 struct pipe_debug_callback
*debug
,
4373 FILE *file
, bool check_debug_option
)
4375 enum pipe_shader_type shader_type
= shader
->selector
->type
;
4377 if (!check_debug_option
||
4378 si_can_dump_shader(sscreen
, shader_type
))
4379 si_dump_shader_key(shader
, file
);
4381 if (!check_debug_option
&& shader
->binary
.llvm_ir_string
) {
4382 if (shader
->previous_stage
&&
4383 shader
->previous_stage
->binary
.llvm_ir_string
) {
4384 fprintf(file
, "\n%s - previous stage - LLVM IR:\n\n",
4385 si_get_shader_name(shader
));
4386 fprintf(file
, "%s\n", shader
->previous_stage
->binary
.llvm_ir_string
);
4389 fprintf(file
, "\n%s - main shader part - LLVM IR:\n\n",
4390 si_get_shader_name(shader
));
4391 fprintf(file
, "%s\n", shader
->binary
.llvm_ir_string
);
4394 if (!check_debug_option
||
4395 (si_can_dump_shader(sscreen
, shader_type
) &&
4396 !(sscreen
->debug_flags
& DBG(NO_ASM
)))) {
4397 unsigned wave_size
= si_get_shader_wave_size(shader
);
4399 fprintf(file
, "\n%s:\n", si_get_shader_name(shader
));
4402 si_shader_dump_disassembly(sscreen
, &shader
->prolog
->binary
,
4403 shader_type
, wave_size
, debug
, "prolog", file
);
4404 if (shader
->previous_stage
)
4405 si_shader_dump_disassembly(sscreen
, &shader
->previous_stage
->binary
,
4406 shader_type
, wave_size
, debug
, "previous stage", file
);
4407 if (shader
->prolog2
)
4408 si_shader_dump_disassembly(sscreen
, &shader
->prolog2
->binary
,
4409 shader_type
, wave_size
, debug
, "prolog2", file
);
4411 si_shader_dump_disassembly(sscreen
, &shader
->binary
, shader_type
,
4412 wave_size
, debug
, "main", file
);
4415 si_shader_dump_disassembly(sscreen
, &shader
->epilog
->binary
,
4416 shader_type
, wave_size
, debug
, "epilog", file
);
4417 fprintf(file
, "\n");
4420 si_shader_dump_stats(sscreen
, shader
, file
, check_debug_option
);
4423 static int si_compile_llvm(struct si_screen
*sscreen
,
4424 struct si_shader_binary
*binary
,
4425 struct ac_shader_config
*conf
,
4426 struct ac_llvm_compiler
*compiler
,
4428 struct pipe_debug_callback
*debug
,
4429 enum pipe_shader_type shader_type
,
4432 bool less_optimized
)
4434 unsigned count
= p_atomic_inc_return(&sscreen
->num_compilations
);
4436 if (si_can_dump_shader(sscreen
, shader_type
)) {
4437 fprintf(stderr
, "radeonsi: Compiling shader %d\n", count
);
4439 if (!(sscreen
->debug_flags
& (DBG(NO_IR
) | DBG(PREOPT_IR
)))) {
4440 fprintf(stderr
, "%s LLVM IR:\n\n", name
);
4441 ac_dump_module(mod
);
4442 fprintf(stderr
, "\n");
4446 if (sscreen
->record_llvm_ir
) {
4447 char *ir
= LLVMPrintModuleToString(mod
);
4448 binary
->llvm_ir_string
= strdup(ir
);
4449 LLVMDisposeMessage(ir
);
4452 if (!si_replace_shader(count
, binary
)) {
4453 unsigned r
= si_llvm_compile(mod
, binary
, compiler
, debug
,
4454 less_optimized
, wave_size
);
4459 struct ac_rtld_binary rtld
;
4460 if (!ac_rtld_open(&rtld
, (struct ac_rtld_open_info
){
4461 .info
= &sscreen
->info
,
4462 .shader_type
= tgsi_processor_to_shader_stage(shader_type
),
4463 .wave_size
= wave_size
,
4465 .elf_ptrs
= &binary
->elf_buffer
,
4466 .elf_sizes
= &binary
->elf_size
}))
4469 bool ok
= ac_rtld_read_config(&rtld
, conf
);
4470 ac_rtld_close(&rtld
);
4474 /* Enable 64-bit and 16-bit denormals, because there is no performance
4477 * If denormals are enabled, all floating-point output modifiers are
4480 * Don't enable denormals for 32-bit floats, because:
4481 * - Floating-point output modifiers would be ignored by the hw.
4482 * - Some opcodes don't support denormals, such as v_mad_f32. We would
4483 * have to stop using those.
4484 * - GFX6 & GFX7 would be very slow.
4486 conf
->float_mode
|= V_00B028_FP_64_DENORMS
;
4491 static void si_llvm_build_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
)
4493 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
4494 LLVMBuildRetVoid(ctx
->ac
.builder
);
4496 LLVMBuildRet(ctx
->ac
.builder
, ret
);
4499 /* Generate code for the hardware VS shader stage to go with a geometry shader */
4501 si_generate_gs_copy_shader(struct si_screen
*sscreen
,
4502 struct ac_llvm_compiler
*compiler
,
4503 struct si_shader_selector
*gs_selector
,
4504 struct pipe_debug_callback
*debug
)
4506 struct si_shader_context ctx
;
4507 struct si_shader
*shader
;
4508 LLVMBuilderRef builder
;
4509 struct si_shader_output_values outputs
[SI_MAX_VS_OUTPUTS
];
4510 struct si_shader_info
*gsinfo
= &gs_selector
->info
;
4514 shader
= CALLOC_STRUCT(si_shader
);
4518 /* We can leave the fence as permanently signaled because the GS copy
4519 * shader only becomes visible globally after it has been compiled. */
4520 util_queue_fence_init(&shader
->ready
);
4522 shader
->selector
= gs_selector
;
4523 shader
->is_gs_copy_shader
= true;
4525 si_llvm_context_init(&ctx
, sscreen
, compiler
,
4526 si_get_wave_size(sscreen
, PIPE_SHADER_VERTEX
, false, false));
4527 ctx
.shader
= shader
;
4528 ctx
.type
= PIPE_SHADER_VERTEX
;
4530 builder
= ctx
.ac
.builder
;
4532 create_function(&ctx
);
4533 preload_ring_buffers(&ctx
);
4535 LLVMValueRef voffset
=
4536 LLVMBuildMul(ctx
.ac
.builder
, ctx
.abi
.vertex_id
,
4537 LLVMConstInt(ctx
.i32
, 4, 0), "");
4539 /* Fetch the vertex stream ID.*/
4540 LLVMValueRef stream_id
;
4542 if (!sscreen
->use_ngg_streamout
&& gs_selector
->so
.num_outputs
)
4543 stream_id
= si_unpack_param(&ctx
, ctx
.streamout_config
, 24, 2);
4545 stream_id
= ctx
.i32_0
;
4547 /* Fill in output information. */
4548 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
4549 outputs
[i
].semantic_name
= gsinfo
->output_semantic_name
[i
];
4550 outputs
[i
].semantic_index
= gsinfo
->output_semantic_index
[i
];
4552 for (int chan
= 0; chan
< 4; chan
++) {
4553 outputs
[i
].vertex_stream
[chan
] =
4554 (gsinfo
->output_streams
[i
] >> (2 * chan
)) & 3;
4558 LLVMBasicBlockRef end_bb
;
4559 LLVMValueRef switch_inst
;
4561 end_bb
= LLVMAppendBasicBlockInContext(ctx
.ac
.context
, ctx
.main_fn
, "end");
4562 switch_inst
= LLVMBuildSwitch(builder
, stream_id
, end_bb
, 4);
4564 for (int stream
= 0; stream
< 4; stream
++) {
4565 LLVMBasicBlockRef bb
;
4568 if (!gsinfo
->num_stream_output_components
[stream
])
4571 if (stream
> 0 && !gs_selector
->so
.num_outputs
)
4574 bb
= LLVMInsertBasicBlockInContext(ctx
.ac
.context
, end_bb
, "out");
4575 LLVMAddCase(switch_inst
, LLVMConstInt(ctx
.i32
, stream
, 0), bb
);
4576 LLVMPositionBuilderAtEnd(builder
, bb
);
4578 /* Fetch vertex data from GSVS ring */
4580 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
4581 for (unsigned chan
= 0; chan
< 4; chan
++) {
4582 if (!(gsinfo
->output_usagemask
[i
] & (1 << chan
)) ||
4583 outputs
[i
].vertex_stream
[chan
] != stream
) {
4584 outputs
[i
].values
[chan
] = LLVMGetUndef(ctx
.f32
);
4588 LLVMValueRef soffset
= LLVMConstInt(ctx
.i32
,
4589 offset
* gs_selector
->gs_max_out_vertices
* 16 * 4, 0);
4592 outputs
[i
].values
[chan
] =
4593 ac_build_buffer_load(&ctx
.ac
,
4594 ctx
.gsvs_ring
[0], 1,
4596 soffset
, 0, ac_glc
| ac_slc
,
4601 /* Streamout and exports. */
4602 if (!sscreen
->use_ngg_streamout
&& gs_selector
->so
.num_outputs
) {
4603 si_llvm_emit_streamout(&ctx
, outputs
,
4604 gsinfo
->num_outputs
,
4609 si_llvm_export_vs(&ctx
, outputs
, gsinfo
->num_outputs
);
4611 LLVMBuildBr(builder
, end_bb
);
4614 LLVMPositionBuilderAtEnd(builder
, end_bb
);
4616 LLVMBuildRetVoid(ctx
.ac
.builder
);
4618 ctx
.type
= PIPE_SHADER_GEOMETRY
; /* override for shader dumping */
4619 si_llvm_optimize_module(&ctx
);
4622 if (si_compile_llvm(sscreen
, &ctx
.shader
->binary
,
4623 &ctx
.shader
->config
, ctx
.compiler
,
4625 debug
, PIPE_SHADER_GEOMETRY
, ctx
.ac
.wave_size
,
4626 "GS Copy Shader", false) == 0) {
4627 if (si_can_dump_shader(sscreen
, PIPE_SHADER_GEOMETRY
))
4628 fprintf(stderr
, "GS Copy Shader:\n");
4629 si_shader_dump(sscreen
, ctx
.shader
, debug
, stderr
, true);
4631 if (!ctx
.shader
->config
.scratch_bytes_per_wave
)
4632 ok
= si_shader_binary_upload(sscreen
, ctx
.shader
, 0);
4637 si_llvm_dispose(&ctx
);
4643 si_fix_resource_usage(sscreen
, shader
);
4648 static void si_dump_shader_key_vs(const struct si_shader_key
*key
,
4649 const struct si_vs_prolog_bits
*prolog
,
4650 const char *prefix
, FILE *f
)
4652 fprintf(f
, " %s.instance_divisor_is_one = %u\n",
4653 prefix
, prolog
->instance_divisor_is_one
);
4654 fprintf(f
, " %s.instance_divisor_is_fetched = %u\n",
4655 prefix
, prolog
->instance_divisor_is_fetched
);
4656 fprintf(f
, " %s.unpack_instance_id_from_vertex_id = %u\n",
4657 prefix
, prolog
->unpack_instance_id_from_vertex_id
);
4658 fprintf(f
, " %s.ls_vgpr_fix = %u\n",
4659 prefix
, prolog
->ls_vgpr_fix
);
4661 fprintf(f
, " mono.vs.fetch_opencode = %x\n", key
->mono
.vs_fetch_opencode
);
4662 fprintf(f
, " mono.vs.fix_fetch = {");
4663 for (int i
= 0; i
< SI_MAX_ATTRIBS
; i
++) {
4664 union si_vs_fix_fetch fix
= key
->mono
.vs_fix_fetch
[i
];
4670 fprintf(f
, "%u.%u.%u.%u", fix
.u
.reverse
, fix
.u
.log_size
,
4671 fix
.u
.num_channels_m1
, fix
.u
.format
);
4676 static void si_dump_shader_key(const struct si_shader
*shader
, FILE *f
)
4678 const struct si_shader_key
*key
= &shader
->key
;
4679 enum pipe_shader_type shader_type
= shader
->selector
->type
;
4681 fprintf(f
, "SHADER KEY\n");
4683 switch (shader_type
) {
4684 case PIPE_SHADER_VERTEX
:
4685 si_dump_shader_key_vs(key
, &key
->part
.vs
.prolog
,
4686 "part.vs.prolog", f
);
4687 fprintf(f
, " as_es = %u\n", key
->as_es
);
4688 fprintf(f
, " as_ls = %u\n", key
->as_ls
);
4689 fprintf(f
, " as_ngg = %u\n", key
->as_ngg
);
4690 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
4691 key
->mono
.u
.vs_export_prim_id
);
4692 fprintf(f
, " opt.vs_as_prim_discard_cs = %u\n",
4693 key
->opt
.vs_as_prim_discard_cs
);
4694 fprintf(f
, " opt.cs_prim_type = %s\n",
4695 tgsi_primitive_names
[key
->opt
.cs_prim_type
]);
4696 fprintf(f
, " opt.cs_indexed = %u\n",
4697 key
->opt
.cs_indexed
);
4698 fprintf(f
, " opt.cs_instancing = %u\n",
4699 key
->opt
.cs_instancing
);
4700 fprintf(f
, " opt.cs_primitive_restart = %u\n",
4701 key
->opt
.cs_primitive_restart
);
4702 fprintf(f
, " opt.cs_provoking_vertex_first = %u\n",
4703 key
->opt
.cs_provoking_vertex_first
);
4704 fprintf(f
, " opt.cs_need_correct_orientation = %u\n",
4705 key
->opt
.cs_need_correct_orientation
);
4706 fprintf(f
, " opt.cs_cull_front = %u\n",
4707 key
->opt
.cs_cull_front
);
4708 fprintf(f
, " opt.cs_cull_back = %u\n",
4709 key
->opt
.cs_cull_back
);
4710 fprintf(f
, " opt.cs_cull_z = %u\n",
4711 key
->opt
.cs_cull_z
);
4712 fprintf(f
, " opt.cs_halfz_clip_space = %u\n",
4713 key
->opt
.cs_halfz_clip_space
);
4716 case PIPE_SHADER_TESS_CTRL
:
4717 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
) {
4718 si_dump_shader_key_vs(key
, &key
->part
.tcs
.ls_prolog
,
4719 "part.tcs.ls_prolog", f
);
4721 fprintf(f
, " part.tcs.epilog.prim_mode = %u\n", key
->part
.tcs
.epilog
.prim_mode
);
4722 fprintf(f
, " mono.u.ff_tcs_inputs_to_copy = 0x%"PRIx64
"\n", key
->mono
.u
.ff_tcs_inputs_to_copy
);
4725 case PIPE_SHADER_TESS_EVAL
:
4726 fprintf(f
, " as_es = %u\n", key
->as_es
);
4727 fprintf(f
, " as_ngg = %u\n", key
->as_ngg
);
4728 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
4729 key
->mono
.u
.vs_export_prim_id
);
4732 case PIPE_SHADER_GEOMETRY
:
4733 if (shader
->is_gs_copy_shader
)
4736 if (shader
->selector
->screen
->info
.chip_class
>= GFX9
&&
4737 key
->part
.gs
.es
->type
== PIPE_SHADER_VERTEX
) {
4738 si_dump_shader_key_vs(key
, &key
->part
.gs
.vs_prolog
,
4739 "part.gs.vs_prolog", f
);
4741 fprintf(f
, " part.gs.prolog.tri_strip_adj_fix = %u\n", key
->part
.gs
.prolog
.tri_strip_adj_fix
);
4742 fprintf(f
, " part.gs.prolog.gfx9_prev_is_vs = %u\n", key
->part
.gs
.prolog
.gfx9_prev_is_vs
);
4743 fprintf(f
, " as_ngg = %u\n", key
->as_ngg
);
4746 case PIPE_SHADER_COMPUTE
:
4749 case PIPE_SHADER_FRAGMENT
:
4750 fprintf(f
, " part.ps.prolog.color_two_side = %u\n", key
->part
.ps
.prolog
.color_two_side
);
4751 fprintf(f
, " part.ps.prolog.flatshade_colors = %u\n", key
->part
.ps
.prolog
.flatshade_colors
);
4752 fprintf(f
, " part.ps.prolog.poly_stipple = %u\n", key
->part
.ps
.prolog
.poly_stipple
);
4753 fprintf(f
, " part.ps.prolog.force_persp_sample_interp = %u\n", key
->part
.ps
.prolog
.force_persp_sample_interp
);
4754 fprintf(f
, " part.ps.prolog.force_linear_sample_interp = %u\n", key
->part
.ps
.prolog
.force_linear_sample_interp
);
4755 fprintf(f
, " part.ps.prolog.force_persp_center_interp = %u\n", key
->part
.ps
.prolog
.force_persp_center_interp
);
4756 fprintf(f
, " part.ps.prolog.force_linear_center_interp = %u\n", key
->part
.ps
.prolog
.force_linear_center_interp
);
4757 fprintf(f
, " part.ps.prolog.bc_optimize_for_persp = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_persp
);
4758 fprintf(f
, " part.ps.prolog.bc_optimize_for_linear = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_linear
);
4759 fprintf(f
, " part.ps.prolog.samplemask_log_ps_iter = %u\n", key
->part
.ps
.prolog
.samplemask_log_ps_iter
);
4760 fprintf(f
, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key
->part
.ps
.epilog
.spi_shader_col_format
);
4761 fprintf(f
, " part.ps.epilog.color_is_int8 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int8
);
4762 fprintf(f
, " part.ps.epilog.color_is_int10 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int10
);
4763 fprintf(f
, " part.ps.epilog.last_cbuf = %u\n", key
->part
.ps
.epilog
.last_cbuf
);
4764 fprintf(f
, " part.ps.epilog.alpha_func = %u\n", key
->part
.ps
.epilog
.alpha_func
);
4765 fprintf(f
, " part.ps.epilog.alpha_to_one = %u\n", key
->part
.ps
.epilog
.alpha_to_one
);
4766 fprintf(f
, " part.ps.epilog.poly_line_smoothing = %u\n", key
->part
.ps
.epilog
.poly_line_smoothing
);
4767 fprintf(f
, " part.ps.epilog.clamp_color = %u\n", key
->part
.ps
.epilog
.clamp_color
);
4768 fprintf(f
, " mono.u.ps.interpolate_at_sample_force_center = %u\n", key
->mono
.u
.ps
.interpolate_at_sample_force_center
);
4769 fprintf(f
, " mono.u.ps.fbfetch_msaa = %u\n", key
->mono
.u
.ps
.fbfetch_msaa
);
4770 fprintf(f
, " mono.u.ps.fbfetch_is_1D = %u\n", key
->mono
.u
.ps
.fbfetch_is_1D
);
4771 fprintf(f
, " mono.u.ps.fbfetch_layered = %u\n", key
->mono
.u
.ps
.fbfetch_layered
);
4778 if ((shader_type
== PIPE_SHADER_GEOMETRY
||
4779 shader_type
== PIPE_SHADER_TESS_EVAL
||
4780 shader_type
== PIPE_SHADER_VERTEX
) &&
4781 !key
->as_es
&& !key
->as_ls
) {
4782 fprintf(f
, " opt.kill_outputs = 0x%"PRIx64
"\n", key
->opt
.kill_outputs
);
4783 fprintf(f
, " opt.clip_disable = %u\n", key
->opt
.clip_disable
);
4787 static void si_optimize_vs_outputs(struct si_shader_context
*ctx
)
4789 struct si_shader
*shader
= ctx
->shader
;
4790 struct si_shader_info
*info
= &shader
->selector
->info
;
4792 if ((ctx
->type
!= PIPE_SHADER_VERTEX
&&
4793 ctx
->type
!= PIPE_SHADER_TESS_EVAL
) ||
4794 shader
->key
.as_ls
||
4798 ac_optimize_vs_outputs(&ctx
->ac
,
4800 shader
->info
.vs_output_param_offset
,
4802 &shader
->info
.nr_param_exports
);
4805 static void si_init_exec_from_input(struct si_shader_context
*ctx
,
4806 struct ac_arg param
, unsigned bitoffset
)
4808 LLVMValueRef args
[] = {
4809 ac_get_arg(&ctx
->ac
, param
),
4810 LLVMConstInt(ctx
->i32
, bitoffset
, 0),
4812 ac_build_intrinsic(&ctx
->ac
,
4813 "llvm.amdgcn.init.exec.from.input",
4814 ctx
->voidt
, args
, 2, AC_FUNC_ATTR_CONVERGENT
);
4817 static bool si_vs_needs_prolog(const struct si_shader_selector
*sel
,
4818 const struct si_vs_prolog_bits
*key
)
4820 /* VGPR initialization fixup for Vega10 and Raven is always done in the
4822 return sel
->vs_needs_prolog
||
4824 key
->unpack_instance_id_from_vertex_id
;
4827 LLVMValueRef
si_is_es_thread(struct si_shader_context
*ctx
)
4829 /* Return true if the current thread should execute an ES thread. */
4830 return LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4831 ac_get_thread_id(&ctx
->ac
),
4832 si_unpack_param(ctx
, ctx
->merged_wave_info
, 0, 8), "");
4835 LLVMValueRef
si_is_gs_thread(struct si_shader_context
*ctx
)
4837 /* Return true if the current thread should execute a GS thread. */
4838 return LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4839 ac_get_thread_id(&ctx
->ac
),
4840 si_unpack_param(ctx
, ctx
->merged_wave_info
, 8, 8), "");
4843 static void si_llvm_emit_kill(struct ac_shader_abi
*abi
, LLVMValueRef visible
)
4845 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4846 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4848 if (ctx
->shader
->selector
->force_correct_derivs_after_kill
) {
4849 /* Kill immediately while maintaining WQM. */
4850 ac_build_kill_if_false(&ctx
->ac
,
4851 ac_build_wqm_vote(&ctx
->ac
, visible
));
4853 LLVMValueRef mask
= LLVMBuildLoad(builder
, ctx
->postponed_kill
, "");
4854 mask
= LLVMBuildAnd(builder
, mask
, visible
, "");
4855 LLVMBuildStore(builder
, mask
, ctx
->postponed_kill
);
4859 ac_build_kill_if_false(&ctx
->ac
, visible
);
4862 static bool si_build_main_function(struct si_shader_context
*ctx
,
4863 struct nir_shader
*nir
, bool free_nir
)
4865 struct si_shader
*shader
= ctx
->shader
;
4866 struct si_shader_selector
*sel
= shader
->selector
;
4868 // TODO clean all this up!
4869 switch (ctx
->type
) {
4870 case PIPE_SHADER_VERTEX
:
4871 if (shader
->key
.as_ls
)
4872 ctx
->abi
.emit_outputs
= si_llvm_emit_ls_epilogue
;
4873 else if (shader
->key
.as_es
)
4874 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
4875 else if (shader
->key
.opt
.vs_as_prim_discard_cs
)
4876 ctx
->abi
.emit_outputs
= si_llvm_emit_prim_discard_cs_epilogue
;
4877 else if (shader
->key
.as_ngg
)
4878 ctx
->abi
.emit_outputs
= gfx10_emit_ngg_epilogue
;
4880 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
4881 ctx
->abi
.load_base_vertex
= get_base_vertex
;
4883 case PIPE_SHADER_TESS_CTRL
:
4884 ctx
->abi
.load_tess_varyings
= si_nir_load_tcs_varyings
;
4885 ctx
->abi
.load_tess_level
= si_load_tess_level
;
4886 ctx
->abi
.store_tcs_outputs
= si_nir_store_output_tcs
;
4887 ctx
->abi
.emit_outputs
= si_llvm_emit_tcs_epilogue
;
4888 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
4890 case PIPE_SHADER_TESS_EVAL
:
4891 ctx
->abi
.load_tess_varyings
= si_nir_load_input_tes
;
4892 ctx
->abi
.load_tess_coord
= si_load_tess_coord
;
4893 ctx
->abi
.load_tess_level
= si_load_tess_level
;
4894 ctx
->abi
.load_patch_vertices_in
= si_load_patch_vertices_in
;
4895 if (shader
->key
.as_es
)
4896 ctx
->abi
.emit_outputs
= si_llvm_emit_es_epilogue
;
4897 else if (shader
->key
.as_ngg
)
4898 ctx
->abi
.emit_outputs
= gfx10_emit_ngg_epilogue
;
4900 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
4902 case PIPE_SHADER_GEOMETRY
:
4903 ctx
->abi
.load_inputs
= si_nir_load_input_gs
;
4904 ctx
->abi
.emit_vertex
= si_llvm_emit_vertex
;
4905 ctx
->abi
.emit_primitive
= si_llvm_emit_primitive
;
4906 ctx
->abi
.emit_outputs
= si_llvm_emit_gs_epilogue
;
4908 case PIPE_SHADER_FRAGMENT
:
4909 ctx
->abi
.emit_outputs
= si_llvm_return_fs_outputs
;
4910 ctx
->abi
.load_sample_position
= load_sample_position
;
4911 ctx
->abi
.load_sample_mask_in
= load_sample_mask_in
;
4912 ctx
->abi
.emit_fbfetch
= si_nir_emit_fbfetch
;
4913 ctx
->abi
.emit_kill
= si_llvm_emit_kill
;
4915 case PIPE_SHADER_COMPUTE
:
4916 ctx
->abi
.load_local_group_size
= get_block_size
;
4919 assert(!"Unsupported shader type");
4923 ctx
->abi
.load_ubo
= load_ubo
;
4924 ctx
->abi
.load_ssbo
= load_ssbo
;
4926 create_function(ctx
);
4927 preload_ring_buffers(ctx
);
4929 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&&
4930 sel
->info
.tessfactors_are_def_in_all_invocs
) {
4931 for (unsigned i
= 0; i
< 6; i
++) {
4932 ctx
->invoc0_tess_factors
[i
] =
4933 ac_build_alloca_undef(&ctx
->ac
, ctx
->i32
, "");
4937 if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
4938 for (unsigned i
= 0; i
< 4; i
++) {
4939 ctx
->gs_next_vertex
[i
] =
4940 ac_build_alloca(&ctx
->ac
, ctx
->i32
, "");
4942 if (shader
->key
.as_ngg
) {
4943 for (unsigned i
= 0; i
< 4; ++i
) {
4944 ctx
->gs_curprim_verts
[i
] =
4945 ac_build_alloca(&ctx
->ac
, ctx
->ac
.i32
, "");
4946 ctx
->gs_generated_prims
[i
] =
4947 ac_build_alloca(&ctx
->ac
, ctx
->ac
.i32
, "");
4950 unsigned scratch_size
= 8;
4951 if (sel
->so
.num_outputs
)
4954 LLVMTypeRef ai32
= LLVMArrayType(ctx
->i32
, scratch_size
);
4955 ctx
->gs_ngg_scratch
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
4956 ai32
, "ngg_scratch", AC_ADDR_SPACE_LDS
);
4957 LLVMSetInitializer(ctx
->gs_ngg_scratch
, LLVMGetUndef(ai32
));
4958 LLVMSetAlignment(ctx
->gs_ngg_scratch
, 4);
4960 ctx
->gs_ngg_emit
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
4961 LLVMArrayType(ctx
->i32
, 0), "ngg_emit", AC_ADDR_SPACE_LDS
);
4962 LLVMSetLinkage(ctx
->gs_ngg_emit
, LLVMExternalLinkage
);
4963 LLVMSetAlignment(ctx
->gs_ngg_emit
, 4);
4967 if (ctx
->type
!= PIPE_SHADER_GEOMETRY
&&
4968 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)) {
4969 /* Unconditionally declare scratch space base for streamout and
4970 * vertex compaction. Whether space is actually allocated is
4971 * determined during linking / PM4 creation.
4973 * Add an extra dword per vertex to ensure an odd stride, which
4974 * avoids bank conflicts for SoA accesses.
4976 if (!gfx10_is_ngg_passthrough(shader
))
4977 declare_esgs_ring(ctx
);
4979 /* This is really only needed when streamout and / or vertex
4980 * compaction is enabled.
4982 if (sel
->so
.num_outputs
&& !ctx
->gs_ngg_scratch
) {
4983 LLVMTypeRef asi32
= LLVMArrayType(ctx
->i32
, 8);
4984 ctx
->gs_ngg_scratch
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
4985 asi32
, "ngg_scratch", AC_ADDR_SPACE_LDS
);
4986 LLVMSetInitializer(ctx
->gs_ngg_scratch
, LLVMGetUndef(asi32
));
4987 LLVMSetAlignment(ctx
->gs_ngg_scratch
, 4);
4991 /* For GFX9 merged shaders:
4992 * - Set EXEC for the first shader. If the prolog is present, set
4993 * EXEC there instead.
4994 * - Add a barrier before the second shader.
4995 * - In the second shader, reset EXEC to ~0 and wrap the main part in
4996 * an if-statement. This is required for correctness in geometry
4997 * shaders, to ensure that empty GS waves do not send GS_EMIT and
5000 * For monolithic merged shaders, the first shader is wrapped in an
5001 * if-block together with its prolog in si_build_wrapper_function.
5003 * NGG vertex and tess eval shaders running as the last
5004 * vertex/geometry stage handle execution explicitly using
5007 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
5008 if (!shader
->is_monolithic
&&
5009 (shader
->key
.as_es
|| shader
->key
.as_ls
) &&
5010 (ctx
->type
== PIPE_SHADER_TESS_EVAL
||
5011 (ctx
->type
== PIPE_SHADER_VERTEX
&&
5012 !si_vs_needs_prolog(sel
, &shader
->key
.part
.vs
.prolog
)))) {
5013 si_init_exec_from_input(ctx
,
5014 ctx
->merged_wave_info
, 0);
5015 } else if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
5016 ctx
->type
== PIPE_SHADER_GEOMETRY
||
5017 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)) {
5018 LLVMValueRef thread_enabled
;
5019 bool nested_barrier
;
5021 if (!shader
->is_monolithic
||
5022 (ctx
->type
== PIPE_SHADER_TESS_EVAL
&&
5023 (shader
->key
.as_ngg
&& !shader
->key
.as_es
)))
5024 ac_init_exec_full_mask(&ctx
->ac
);
5026 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
5027 ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5028 if (ctx
->type
== PIPE_SHADER_GEOMETRY
&& shader
->key
.as_ngg
) {
5029 gfx10_ngg_gs_emit_prologue(ctx
);
5030 nested_barrier
= false;
5032 nested_barrier
= true;
5035 thread_enabled
= si_is_gs_thread(ctx
);
5037 thread_enabled
= si_is_es_thread(ctx
);
5038 nested_barrier
= false;
5041 ctx
->merged_wrap_if_entry_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
5042 ctx
->merged_wrap_if_label
= 11500;
5043 ac_build_ifcc(&ctx
->ac
, thread_enabled
, ctx
->merged_wrap_if_label
);
5045 if (nested_barrier
) {
5046 /* Execute a barrier before the second shader in
5049 * Execute the barrier inside the conditional block,
5050 * so that empty waves can jump directly to s_endpgm,
5051 * which will also signal the barrier.
5053 * This is possible in gfx9, because an empty wave
5054 * for the second shader does not participate in
5055 * the epilogue. With NGG, empty waves may still
5056 * be required to export data (e.g. GS output vertices),
5057 * so we cannot let them exit early.
5059 * If the shader is TCS and the TCS epilog is present
5060 * and contains a barrier, it will wait there and then
5063 si_llvm_emit_barrier(ctx
);
5068 if (sel
->force_correct_derivs_after_kill
) {
5069 ctx
->postponed_kill
= ac_build_alloca_undef(&ctx
->ac
, ctx
->i1
, "");
5070 /* true = don't kill. */
5071 LLVMBuildStore(ctx
->ac
.builder
, ctx
->i1true
,
5072 ctx
->postponed_kill
);
5075 bool success
= si_nir_build_llvm(ctx
, nir
);
5079 fprintf(stderr
, "Failed to translate shader from NIR to LLVM\n");
5083 si_llvm_build_ret(ctx
, ctx
->return_value
);
5088 * Compute the VS prolog key, which contains all the information needed to
5089 * build the VS prolog function, and set shader->info bits where needed.
5091 * \param info Shader info of the vertex shader.
5092 * \param num_input_sgprs Number of input SGPRs for the vertex shader.
5093 * \param prolog_key Key of the VS prolog
5094 * \param shader_out The vertex shader, or the next shader if merging LS+HS or ES+GS.
5095 * \param key Output shader part key.
5097 static void si_get_vs_prolog_key(const struct si_shader_info
*info
,
5098 unsigned num_input_sgprs
,
5099 const struct si_vs_prolog_bits
*prolog_key
,
5100 struct si_shader
*shader_out
,
5101 union si_shader_part_key
*key
)
5103 memset(key
, 0, sizeof(*key
));
5104 key
->vs_prolog
.states
= *prolog_key
;
5105 key
->vs_prolog
.num_input_sgprs
= num_input_sgprs
;
5106 key
->vs_prolog
.num_inputs
= info
->num_inputs
;
5107 key
->vs_prolog
.as_ls
= shader_out
->key
.as_ls
;
5108 key
->vs_prolog
.as_es
= shader_out
->key
.as_es
;
5109 key
->vs_prolog
.as_ngg
= shader_out
->key
.as_ngg
;
5111 if (shader_out
->selector
->type
== PIPE_SHADER_TESS_CTRL
) {
5112 key
->vs_prolog
.as_ls
= 1;
5113 key
->vs_prolog
.num_merged_next_stage_vgprs
= 2;
5114 } else if (shader_out
->selector
->type
== PIPE_SHADER_GEOMETRY
) {
5115 key
->vs_prolog
.as_es
= 1;
5116 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
5117 } else if (shader_out
->key
.as_ngg
) {
5118 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
5121 /* Enable loading the InstanceID VGPR. */
5122 uint16_t input_mask
= u_bit_consecutive(0, info
->num_inputs
);
5124 if ((key
->vs_prolog
.states
.instance_divisor_is_one
|
5125 key
->vs_prolog
.states
.instance_divisor_is_fetched
) & input_mask
)
5126 shader_out
->info
.uses_instanceid
= true;
5130 * Compute the PS prolog key, which contains all the information needed to
5131 * build the PS prolog function, and set related bits in shader->config.
5133 static void si_get_ps_prolog_key(struct si_shader
*shader
,
5134 union si_shader_part_key
*key
,
5135 bool separate_prolog
)
5137 struct si_shader_info
*info
= &shader
->selector
->info
;
5139 memset(key
, 0, sizeof(*key
));
5140 key
->ps_prolog
.states
= shader
->key
.part
.ps
.prolog
;
5141 key
->ps_prolog
.colors_read
= info
->colors_read
;
5142 key
->ps_prolog
.num_input_sgprs
= shader
->info
.num_input_sgprs
;
5143 key
->ps_prolog
.num_input_vgprs
= shader
->info
.num_input_vgprs
;
5144 key
->ps_prolog
.wqm
= info
->uses_derivatives
&&
5145 (key
->ps_prolog
.colors_read
||
5146 key
->ps_prolog
.states
.force_persp_sample_interp
||
5147 key
->ps_prolog
.states
.force_linear_sample_interp
||
5148 key
->ps_prolog
.states
.force_persp_center_interp
||
5149 key
->ps_prolog
.states
.force_linear_center_interp
||
5150 key
->ps_prolog
.states
.bc_optimize_for_persp
||
5151 key
->ps_prolog
.states
.bc_optimize_for_linear
);
5152 key
->ps_prolog
.ancillary_vgpr_index
= shader
->info
.ancillary_vgpr_index
;
5154 if (info
->colors_read
) {
5155 unsigned *color
= shader
->selector
->color_attr_index
;
5157 if (shader
->key
.part
.ps
.prolog
.color_two_side
) {
5158 /* BCOLORs are stored after the last input. */
5159 key
->ps_prolog
.num_interp_inputs
= info
->num_inputs
;
5160 key
->ps_prolog
.face_vgpr_index
= shader
->info
.face_vgpr_index
;
5161 if (separate_prolog
)
5162 shader
->config
.spi_ps_input_ena
|= S_0286CC_FRONT_FACE_ENA(1);
5165 for (unsigned i
= 0; i
< 2; i
++) {
5166 unsigned interp
= info
->input_interpolate
[color
[i
]];
5167 unsigned location
= info
->input_interpolate_loc
[color
[i
]];
5169 if (!(info
->colors_read
& (0xf << i
*4)))
5172 key
->ps_prolog
.color_attr_index
[i
] = color
[i
];
5174 if (shader
->key
.part
.ps
.prolog
.flatshade_colors
&&
5175 interp
== TGSI_INTERPOLATE_COLOR
)
5176 interp
= TGSI_INTERPOLATE_CONSTANT
;
5179 case TGSI_INTERPOLATE_CONSTANT
:
5180 key
->ps_prolog
.color_interp_vgpr_index
[i
] = -1;
5182 case TGSI_INTERPOLATE_PERSPECTIVE
:
5183 case TGSI_INTERPOLATE_COLOR
:
5184 /* Force the interpolation location for colors here. */
5185 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
)
5186 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
5187 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
)
5188 location
= TGSI_INTERPOLATE_LOC_CENTER
;
5191 case TGSI_INTERPOLATE_LOC_SAMPLE
:
5192 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 0;
5193 if (separate_prolog
) {
5194 shader
->config
.spi_ps_input_ena
|=
5195 S_0286CC_PERSP_SAMPLE_ENA(1);
5198 case TGSI_INTERPOLATE_LOC_CENTER
:
5199 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 2;
5200 if (separate_prolog
) {
5201 shader
->config
.spi_ps_input_ena
|=
5202 S_0286CC_PERSP_CENTER_ENA(1);
5205 case TGSI_INTERPOLATE_LOC_CENTROID
:
5206 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 4;
5207 if (separate_prolog
) {
5208 shader
->config
.spi_ps_input_ena
|=
5209 S_0286CC_PERSP_CENTROID_ENA(1);
5216 case TGSI_INTERPOLATE_LINEAR
:
5217 /* Force the interpolation location for colors here. */
5218 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
)
5219 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
5220 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
)
5221 location
= TGSI_INTERPOLATE_LOC_CENTER
;
5223 /* The VGPR assignment for non-monolithic shaders
5224 * works because InitialPSInputAddr is set on the
5225 * main shader and PERSP_PULL_MODEL is never used.
5228 case TGSI_INTERPOLATE_LOC_SAMPLE
:
5229 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
5230 separate_prolog
? 6 : 9;
5231 if (separate_prolog
) {
5232 shader
->config
.spi_ps_input_ena
|=
5233 S_0286CC_LINEAR_SAMPLE_ENA(1);
5236 case TGSI_INTERPOLATE_LOC_CENTER
:
5237 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
5238 separate_prolog
? 8 : 11;
5239 if (separate_prolog
) {
5240 shader
->config
.spi_ps_input_ena
|=
5241 S_0286CC_LINEAR_CENTER_ENA(1);
5244 case TGSI_INTERPOLATE_LOC_CENTROID
:
5245 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
5246 separate_prolog
? 10 : 13;
5247 if (separate_prolog
) {
5248 shader
->config
.spi_ps_input_ena
|=
5249 S_0286CC_LINEAR_CENTROID_ENA(1);
5264 * Check whether a PS prolog is required based on the key.
5266 static bool si_need_ps_prolog(const union si_shader_part_key
*key
)
5268 return key
->ps_prolog
.colors_read
||
5269 key
->ps_prolog
.states
.force_persp_sample_interp
||
5270 key
->ps_prolog
.states
.force_linear_sample_interp
||
5271 key
->ps_prolog
.states
.force_persp_center_interp
||
5272 key
->ps_prolog
.states
.force_linear_center_interp
||
5273 key
->ps_prolog
.states
.bc_optimize_for_persp
||
5274 key
->ps_prolog
.states
.bc_optimize_for_linear
||
5275 key
->ps_prolog
.states
.poly_stipple
||
5276 key
->ps_prolog
.states
.samplemask_log_ps_iter
;
5280 * Compute the PS epilog key, which contains all the information needed to
5281 * build the PS epilog function.
5283 static void si_get_ps_epilog_key(struct si_shader
*shader
,
5284 union si_shader_part_key
*key
)
5286 struct si_shader_info
*info
= &shader
->selector
->info
;
5287 memset(key
, 0, sizeof(*key
));
5288 key
->ps_epilog
.colors_written
= info
->colors_written
;
5289 key
->ps_epilog
.writes_z
= info
->writes_z
;
5290 key
->ps_epilog
.writes_stencil
= info
->writes_stencil
;
5291 key
->ps_epilog
.writes_samplemask
= info
->writes_samplemask
;
5292 key
->ps_epilog
.states
= shader
->key
.part
.ps
.epilog
;
5296 * Build the GS prolog function. Rotate the input vertices for triangle strips
5299 static void si_build_gs_prolog_function(struct si_shader_context
*ctx
,
5300 union si_shader_part_key
*key
)
5302 unsigned num_sgprs
, num_vgprs
;
5303 LLVMBuilderRef builder
= ctx
->ac
.builder
;
5304 LLVMTypeRef returns
[AC_MAX_ARGS
];
5305 LLVMValueRef func
, ret
;
5307 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
5309 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
5310 if (key
->gs_prolog
.states
.gfx9_prev_is_vs
)
5311 num_sgprs
= 8 + GFX9_VSGS_NUM_USER_SGPR
;
5313 num_sgprs
= 8 + GFX9_TESGS_NUM_USER_SGPR
;
5314 num_vgprs
= 5; /* ES inputs are not needed by GS */
5316 num_sgprs
= GFX6_GS_NUM_USER_SGPR
+ 2;
5320 for (unsigned i
= 0; i
< num_sgprs
; ++i
) {
5321 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
5322 returns
[i
] = ctx
->i32
;
5325 for (unsigned i
= 0; i
< num_vgprs
; ++i
) {
5326 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
);
5327 returns
[num_sgprs
+ i
] = ctx
->f32
;
5330 /* Create the function. */
5331 si_llvm_create_func(ctx
, "gs_prolog", returns
, num_sgprs
+ num_vgprs
, 0);
5332 func
= ctx
->main_fn
;
5334 /* Set the full EXEC mask for the prolog, because we are only fiddling
5335 * with registers here. The main shader part will set the correct EXEC
5338 if (ctx
->screen
->info
.chip_class
>= GFX9
&& !key
->gs_prolog
.is_monolithic
)
5339 ac_init_exec_full_mask(&ctx
->ac
);
5341 /* Copy inputs to outputs. This should be no-op, as the registers match,
5342 * but it will prevent the compiler from overwriting them unintentionally.
5344 ret
= ctx
->return_value
;
5345 for (unsigned i
= 0; i
< num_sgprs
; i
++) {
5346 LLVMValueRef p
= LLVMGetParam(func
, i
);
5347 ret
= LLVMBuildInsertValue(builder
, ret
, p
, i
, "");
5349 for (unsigned i
= 0; i
< num_vgprs
; i
++) {
5350 LLVMValueRef p
= LLVMGetParam(func
, num_sgprs
+ i
);
5351 p
= ac_to_float(&ctx
->ac
, p
);
5352 ret
= LLVMBuildInsertValue(builder
, ret
, p
, num_sgprs
+ i
, "");
5355 if (key
->gs_prolog
.states
.tri_strip_adj_fix
) {
5356 /* Remap the input vertices for every other primitive. */
5357 const struct ac_arg gfx6_vtx_params
[6] = {
5358 { .used
= true, .arg_index
= num_sgprs
},
5359 { .used
= true, .arg_index
= num_sgprs
+ 1 },
5360 { .used
= true, .arg_index
= num_sgprs
+ 3 },
5361 { .used
= true, .arg_index
= num_sgprs
+ 4 },
5362 { .used
= true, .arg_index
= num_sgprs
+ 5 },
5363 { .used
= true, .arg_index
= num_sgprs
+ 6 },
5365 const struct ac_arg gfx9_vtx_params
[3] = {
5366 { .used
= true, .arg_index
= num_sgprs
},
5367 { .used
= true, .arg_index
= num_sgprs
+ 1 },
5368 { .used
= true, .arg_index
= num_sgprs
+ 4 },
5370 LLVMValueRef vtx_in
[6], vtx_out
[6];
5371 LLVMValueRef prim_id
, rotate
;
5373 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
5374 for (unsigned i
= 0; i
< 3; i
++) {
5375 vtx_in
[i
*2] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 0, 16);
5376 vtx_in
[i
*2+1] = si_unpack_param(ctx
, gfx9_vtx_params
[i
], 16, 16);
5379 for (unsigned i
= 0; i
< 6; i
++)
5380 vtx_in
[i
] = ac_get_arg(&ctx
->ac
, gfx6_vtx_params
[i
]);
5383 prim_id
= LLVMGetParam(func
, num_sgprs
+ 2);
5384 rotate
= LLVMBuildTrunc(builder
, prim_id
, ctx
->i1
, "");
5386 for (unsigned i
= 0; i
< 6; ++i
) {
5387 LLVMValueRef base
, rotated
;
5389 rotated
= vtx_in
[(i
+ 4) % 6];
5390 vtx_out
[i
] = LLVMBuildSelect(builder
, rotate
, rotated
, base
, "");
5393 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
5394 for (unsigned i
= 0; i
< 3; i
++) {
5395 LLVMValueRef hi
, out
;
5397 hi
= LLVMBuildShl(builder
, vtx_out
[i
*2+1],
5398 LLVMConstInt(ctx
->i32
, 16, 0), "");
5399 out
= LLVMBuildOr(builder
, vtx_out
[i
*2], hi
, "");
5400 out
= ac_to_float(&ctx
->ac
, out
);
5401 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
5402 gfx9_vtx_params
[i
].arg_index
, "");
5405 for (unsigned i
= 0; i
< 6; i
++) {
5408 out
= ac_to_float(&ctx
->ac
, vtx_out
[i
]);
5409 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
5410 gfx6_vtx_params
[i
].arg_index
, "");
5415 LLVMBuildRet(builder
, ret
);
5419 * Given a list of shader part functions, build a wrapper function that
5420 * runs them in sequence to form a monolithic shader.
5422 static void si_build_wrapper_function(struct si_shader_context
*ctx
,
5423 LLVMValueRef
*parts
,
5426 unsigned next_shader_first_part
)
5428 LLVMBuilderRef builder
= ctx
->ac
.builder
;
5429 /* PS epilog has one arg per color component; gfx9 merged shader
5430 * prologs need to forward 40 SGPRs.
5432 LLVMValueRef initial
[AC_MAX_ARGS
], out
[AC_MAX_ARGS
];
5433 LLVMTypeRef function_type
;
5434 unsigned num_first_params
;
5435 unsigned num_out
, initial_num_out
;
5436 ASSERTED
unsigned num_out_sgpr
; /* used in debug checks */
5437 ASSERTED
unsigned initial_num_out_sgpr
; /* used in debug checks */
5438 unsigned num_sgprs
, num_vgprs
;
5441 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
5443 for (unsigned i
= 0; i
< num_parts
; ++i
) {
5444 ac_add_function_attr(ctx
->ac
.context
, parts
[i
], -1,
5445 AC_FUNC_ATTR_ALWAYSINLINE
);
5446 LLVMSetLinkage(parts
[i
], LLVMPrivateLinkage
);
5449 /* The parameters of the wrapper function correspond to those of the
5450 * first part in terms of SGPRs and VGPRs, but we use the types of the
5451 * main part to get the right types. This is relevant for the
5452 * dereferenceable attribute on descriptor table pointers.
5457 function_type
= LLVMGetElementType(LLVMTypeOf(parts
[0]));
5458 num_first_params
= LLVMCountParamTypes(function_type
);
5460 for (unsigned i
= 0; i
< num_first_params
; ++i
) {
5461 LLVMValueRef param
= LLVMGetParam(parts
[0], i
);
5463 if (ac_is_sgpr_param(param
)) {
5464 assert(num_vgprs
== 0);
5465 num_sgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
5467 num_vgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
5472 while (gprs
< num_sgprs
+ num_vgprs
) {
5473 LLVMValueRef param
= LLVMGetParam(parts
[main_part
], ctx
->args
.arg_count
);
5474 LLVMTypeRef type
= LLVMTypeOf(param
);
5475 unsigned size
= ac_get_type_size(type
) / 4;
5477 /* This is going to get casted anyways, so we don't have to
5478 * have the exact same type. But we do have to preserve the
5479 * pointer-ness so that LLVM knows about it.
5481 enum ac_arg_type arg_type
= AC_ARG_INT
;
5482 if (LLVMGetTypeKind(type
) == LLVMPointerTypeKind
) {
5483 arg_type
= AC_ARG_CONST_PTR
;
5486 ac_add_arg(&ctx
->args
, gprs
< num_sgprs
? AC_ARG_SGPR
: AC_ARG_VGPR
,
5487 size
, arg_type
, NULL
);
5489 assert(ac_is_sgpr_param(param
) == (gprs
< num_sgprs
));
5490 assert(gprs
+ size
<= num_sgprs
+ num_vgprs
&&
5491 (gprs
>= num_sgprs
|| gprs
+ size
<= num_sgprs
));
5496 /* Prepare the return type. */
5497 unsigned num_returns
= 0;
5498 LLVMTypeRef returns
[AC_MAX_ARGS
], last_func_type
, return_type
;
5500 last_func_type
= LLVMGetElementType(LLVMTypeOf(parts
[num_parts
- 1]));
5501 return_type
= LLVMGetReturnType(last_func_type
);
5503 switch (LLVMGetTypeKind(return_type
)) {
5504 case LLVMStructTypeKind
:
5505 num_returns
= LLVMCountStructElementTypes(return_type
);
5506 assert(num_returns
<= ARRAY_SIZE(returns
));
5507 LLVMGetStructElementTypes(return_type
, returns
);
5509 case LLVMVoidTypeKind
:
5512 unreachable("unexpected type");
5515 si_llvm_create_func(ctx
, "wrapper", returns
, num_returns
,
5516 si_get_max_workgroup_size(ctx
->shader
));
5518 if (is_merged_shader(ctx
))
5519 ac_init_exec_full_mask(&ctx
->ac
);
5521 /* Record the arguments of the function as if they were an output of
5527 for (unsigned i
= 0; i
< ctx
->args
.arg_count
; ++i
) {
5528 LLVMValueRef param
= LLVMGetParam(ctx
->main_fn
, i
);
5529 LLVMTypeRef param_type
= LLVMTypeOf(param
);
5530 LLVMTypeRef out_type
= ctx
->args
.args
[i
].file
== AC_ARG_SGPR
? ctx
->i32
: ctx
->f32
;
5531 unsigned size
= ac_get_type_size(param_type
) / 4;
5534 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
5535 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i32
, "");
5536 param_type
= ctx
->i32
;
5539 if (param_type
!= out_type
)
5540 param
= LLVMBuildBitCast(builder
, param
, out_type
, "");
5541 out
[num_out
++] = param
;
5543 LLVMTypeRef vector_type
= LLVMVectorType(out_type
, size
);
5545 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
5546 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i64
, "");
5547 param_type
= ctx
->i64
;
5550 if (param_type
!= vector_type
)
5551 param
= LLVMBuildBitCast(builder
, param
, vector_type
, "");
5553 for (unsigned j
= 0; j
< size
; ++j
)
5554 out
[num_out
++] = LLVMBuildExtractElement(
5555 builder
, param
, LLVMConstInt(ctx
->i32
, j
, 0), "");
5558 if (ctx
->args
.args
[i
].file
== AC_ARG_SGPR
)
5559 num_out_sgpr
= num_out
;
5562 memcpy(initial
, out
, sizeof(out
));
5563 initial_num_out
= num_out
;
5564 initial_num_out_sgpr
= num_out_sgpr
;
5566 /* Now chain the parts. */
5567 LLVMValueRef ret
= NULL
;
5568 for (unsigned part
= 0; part
< num_parts
; ++part
) {
5569 LLVMValueRef in
[AC_MAX_ARGS
];
5570 LLVMTypeRef ret_type
;
5571 unsigned out_idx
= 0;
5572 unsigned num_params
= LLVMCountParams(parts
[part
]);
5574 /* Merged shaders are executed conditionally depending
5575 * on the number of enabled threads passed in the input SGPRs. */
5576 if (is_multi_part_shader(ctx
) && part
== 0) {
5577 LLVMValueRef ena
, count
= initial
[3];
5579 count
= LLVMBuildAnd(builder
, count
,
5580 LLVMConstInt(ctx
->i32
, 0x7f, 0), "");
5581 ena
= LLVMBuildICmp(builder
, LLVMIntULT
,
5582 ac_get_thread_id(&ctx
->ac
), count
, "");
5583 ac_build_ifcc(&ctx
->ac
, ena
, 6506);
5586 /* Derive arguments for the next part from outputs of the
5589 for (unsigned param_idx
= 0; param_idx
< num_params
; ++param_idx
) {
5591 LLVMTypeRef param_type
;
5593 unsigned param_size
;
5594 LLVMValueRef arg
= NULL
;
5596 param
= LLVMGetParam(parts
[part
], param_idx
);
5597 param_type
= LLVMTypeOf(param
);
5598 param_size
= ac_get_type_size(param_type
) / 4;
5599 is_sgpr
= ac_is_sgpr_param(param
);
5602 ac_add_function_attr(ctx
->ac
.context
, parts
[part
],
5603 param_idx
+ 1, AC_FUNC_ATTR_INREG
);
5604 } else if (out_idx
< num_out_sgpr
) {
5605 /* Skip returned SGPRs the current part doesn't
5606 * declare on the input. */
5607 out_idx
= num_out_sgpr
;
5610 assert(out_idx
+ param_size
<= (is_sgpr
? num_out_sgpr
: num_out
));
5612 if (param_size
== 1)
5615 arg
= ac_build_gather_values(&ctx
->ac
, &out
[out_idx
], param_size
);
5617 if (LLVMTypeOf(arg
) != param_type
) {
5618 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
5619 if (LLVMGetPointerAddressSpace(param_type
) ==
5620 AC_ADDR_SPACE_CONST_32BIT
) {
5621 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i32
, "");
5622 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
5624 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i64
, "");
5625 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
5628 arg
= LLVMBuildBitCast(builder
, arg
, param_type
, "");
5632 in
[param_idx
] = arg
;
5633 out_idx
+= param_size
;
5636 ret
= ac_build_call(&ctx
->ac
, parts
[part
], in
, num_params
);
5638 if (is_multi_part_shader(ctx
) &&
5639 part
+ 1 == next_shader_first_part
) {
5640 ac_build_endif(&ctx
->ac
, 6506);
5642 /* The second half of the merged shader should use
5643 * the inputs from the toplevel (wrapper) function,
5644 * not the return value from the last call.
5646 * That's because the last call was executed condi-
5647 * tionally, so we can't consume it in the main
5650 memcpy(out
, initial
, sizeof(initial
));
5651 num_out
= initial_num_out
;
5652 num_out_sgpr
= initial_num_out_sgpr
;
5656 /* Extract the returned GPRs. */
5657 ret_type
= LLVMTypeOf(ret
);
5661 if (LLVMGetTypeKind(ret_type
) != LLVMVoidTypeKind
) {
5662 assert(LLVMGetTypeKind(ret_type
) == LLVMStructTypeKind
);
5664 unsigned ret_size
= LLVMCountStructElementTypes(ret_type
);
5666 for (unsigned i
= 0; i
< ret_size
; ++i
) {
5668 LLVMBuildExtractValue(builder
, ret
, i
, "");
5670 assert(num_out
< ARRAY_SIZE(out
));
5671 out
[num_out
++] = val
;
5673 if (LLVMTypeOf(val
) == ctx
->i32
) {
5674 assert(num_out_sgpr
+ 1 == num_out
);
5675 num_out_sgpr
= num_out
;
5681 /* Return the value from the last part. */
5682 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
5683 LLVMBuildRetVoid(builder
);
5685 LLVMBuildRet(builder
, ret
);
5688 static bool si_should_optimize_less(struct ac_llvm_compiler
*compiler
,
5689 struct si_shader_selector
*sel
)
5691 if (!compiler
->low_opt_passes
)
5694 /* Assume a slow CPU. */
5695 assert(!sel
->screen
->info
.has_dedicated_vram
&&
5696 sel
->screen
->info
.chip_class
<= GFX8
);
5698 /* For a crazy dEQP test containing 2597 memory opcodes, mostly
5700 return sel
->type
== PIPE_SHADER_COMPUTE
&&
5701 sel
->info
.num_memory_instructions
> 1000;
5704 static struct nir_shader
*get_nir_shader(struct si_shader_selector
*sel
,
5711 } else if (sel
->nir_binary
) {
5712 struct pipe_screen
*screen
= &sel
->screen
->b
;
5713 const void *options
=
5714 screen
->get_compiler_options(screen
, PIPE_SHADER_IR_NIR
,
5717 struct blob_reader blob_reader
;
5718 blob_reader_init(&blob_reader
, sel
->nir_binary
, sel
->nir_size
);
5720 return nir_deserialize(NULL
, options
, &blob_reader
);
5725 int si_compile_shader(struct si_screen
*sscreen
,
5726 struct ac_llvm_compiler
*compiler
,
5727 struct si_shader
*shader
,
5728 struct pipe_debug_callback
*debug
)
5730 struct si_shader_selector
*sel
= shader
->selector
;
5731 struct si_shader_context ctx
;
5733 struct nir_shader
*nir
= get_nir_shader(sel
, &free_nir
);
5736 /* Dump NIR before doing NIR->LLVM conversion in case the
5737 * conversion fails. */
5738 if (si_can_dump_shader(sscreen
, sel
->type
) &&
5739 !(sscreen
->debug_flags
& DBG(NO_NIR
))) {
5740 nir_print_shader(nir
, stderr
);
5741 si_dump_streamout(&sel
->so
);
5744 si_llvm_context_init(&ctx
, sscreen
, compiler
, si_get_shader_wave_size(shader
));
5745 si_llvm_context_set_ir(&ctx
, shader
);
5747 memset(shader
->info
.vs_output_param_offset
, AC_EXP_PARAM_UNDEFINED
,
5748 sizeof(shader
->info
.vs_output_param_offset
));
5750 shader
->info
.uses_instanceid
= sel
->info
.uses_instanceid
;
5752 if (!si_build_main_function(&ctx
, nir
, free_nir
)) {
5753 si_llvm_dispose(&ctx
);
5757 if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_VERTEX
) {
5758 LLVMValueRef parts
[2];
5759 bool need_prolog
= si_vs_needs_prolog(sel
, &shader
->key
.part
.vs
.prolog
);
5761 parts
[1] = ctx
.main_fn
;
5764 union si_shader_part_key prolog_key
;
5765 si_get_vs_prolog_key(&sel
->info
,
5766 shader
->info
.num_input_sgprs
,
5767 &shader
->key
.part
.vs
.prolog
,
5768 shader
, &prolog_key
);
5769 prolog_key
.vs_prolog
.is_monolithic
= true;
5770 si_build_vs_prolog_function(&ctx
, &prolog_key
);
5771 parts
[0] = ctx
.main_fn
;
5774 si_build_wrapper_function(&ctx
, parts
+ !need_prolog
,
5775 1 + need_prolog
, need_prolog
, 0);
5777 if (ctx
.shader
->key
.opt
.vs_as_prim_discard_cs
)
5778 si_build_prim_discard_compute_shader(&ctx
);
5779 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_TESS_CTRL
) {
5780 if (sscreen
->info
.chip_class
>= GFX9
) {
5781 struct si_shader_selector
*ls
= shader
->key
.part
.tcs
.ls
;
5782 LLVMValueRef parts
[4];
5783 bool vs_needs_prolog
=
5784 si_vs_needs_prolog(ls
, &shader
->key
.part
.tcs
.ls_prolog
);
5787 parts
[2] = ctx
.main_fn
;
5790 union si_shader_part_key tcs_epilog_key
;
5791 memset(&tcs_epilog_key
, 0, sizeof(tcs_epilog_key
));
5792 tcs_epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
5793 si_build_tcs_epilog_function(&ctx
, &tcs_epilog_key
);
5794 parts
[3] = ctx
.main_fn
;
5796 /* VS as LS main part */
5797 nir
= get_nir_shader(ls
, &free_nir
);
5798 struct si_shader shader_ls
= {};
5799 shader_ls
.selector
= ls
;
5800 shader_ls
.key
.as_ls
= 1;
5801 shader_ls
.key
.mono
= shader
->key
.mono
;
5802 shader_ls
.key
.opt
= shader
->key
.opt
;
5803 shader_ls
.is_monolithic
= true;
5804 si_llvm_context_set_ir(&ctx
, &shader_ls
);
5806 if (!si_build_main_function(&ctx
, nir
, free_nir
)) {
5807 si_llvm_dispose(&ctx
);
5810 shader
->info
.uses_instanceid
|= ls
->info
.uses_instanceid
;
5811 parts
[1] = ctx
.main_fn
;
5814 if (vs_needs_prolog
) {
5815 union si_shader_part_key vs_prolog_key
;
5816 si_get_vs_prolog_key(&ls
->info
,
5817 shader_ls
.info
.num_input_sgprs
,
5818 &shader
->key
.part
.tcs
.ls_prolog
,
5819 shader
, &vs_prolog_key
);
5820 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
5821 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
5822 parts
[0] = ctx
.main_fn
;
5825 /* Reset the shader context. */
5826 ctx
.shader
= shader
;
5827 ctx
.type
= PIPE_SHADER_TESS_CTRL
;
5829 si_build_wrapper_function(&ctx
,
5830 parts
+ !vs_needs_prolog
,
5831 4 - !vs_needs_prolog
, vs_needs_prolog
,
5832 vs_needs_prolog
? 2 : 1);
5834 LLVMValueRef parts
[2];
5835 union si_shader_part_key epilog_key
;
5837 parts
[0] = ctx
.main_fn
;
5839 memset(&epilog_key
, 0, sizeof(epilog_key
));
5840 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
5841 si_build_tcs_epilog_function(&ctx
, &epilog_key
);
5842 parts
[1] = ctx
.main_fn
;
5844 si_build_wrapper_function(&ctx
, parts
, 2, 0, 0);
5846 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_GEOMETRY
) {
5847 if (ctx
.screen
->info
.chip_class
>= GFX9
) {
5848 struct si_shader_selector
*es
= shader
->key
.part
.gs
.es
;
5849 LLVMValueRef es_prolog
= NULL
;
5850 LLVMValueRef es_main
= NULL
;
5851 LLVMValueRef gs_prolog
= NULL
;
5852 LLVMValueRef gs_main
= ctx
.main_fn
;
5855 union si_shader_part_key gs_prolog_key
;
5856 memset(&gs_prolog_key
, 0, sizeof(gs_prolog_key
));
5857 gs_prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
5858 gs_prolog_key
.gs_prolog
.is_monolithic
= true;
5859 gs_prolog_key
.gs_prolog
.as_ngg
= shader
->key
.as_ngg
;
5860 si_build_gs_prolog_function(&ctx
, &gs_prolog_key
);
5861 gs_prolog
= ctx
.main_fn
;
5864 nir
= get_nir_shader(es
, &free_nir
);
5865 struct si_shader shader_es
= {};
5866 shader_es
.selector
= es
;
5867 shader_es
.key
.as_es
= 1;
5868 shader_es
.key
.as_ngg
= shader
->key
.as_ngg
;
5869 shader_es
.key
.mono
= shader
->key
.mono
;
5870 shader_es
.key
.opt
= shader
->key
.opt
;
5871 shader_es
.is_monolithic
= true;
5872 si_llvm_context_set_ir(&ctx
, &shader_es
);
5874 if (!si_build_main_function(&ctx
, nir
, free_nir
)) {
5875 si_llvm_dispose(&ctx
);
5878 shader
->info
.uses_instanceid
|= es
->info
.uses_instanceid
;
5879 es_main
= ctx
.main_fn
;
5882 if (es
->type
== PIPE_SHADER_VERTEX
&&
5883 si_vs_needs_prolog(es
, &shader
->key
.part
.gs
.vs_prolog
)) {
5884 union si_shader_part_key vs_prolog_key
;
5885 si_get_vs_prolog_key(&es
->info
,
5886 shader_es
.info
.num_input_sgprs
,
5887 &shader
->key
.part
.gs
.vs_prolog
,
5888 shader
, &vs_prolog_key
);
5889 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
5890 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
5891 es_prolog
= ctx
.main_fn
;
5894 /* Reset the shader context. */
5895 ctx
.shader
= shader
;
5896 ctx
.type
= PIPE_SHADER_GEOMETRY
;
5898 /* Prepare the array of shader parts. */
5899 LLVMValueRef parts
[4];
5900 unsigned num_parts
= 0, main_part
, next_first_part
;
5903 parts
[num_parts
++] = es_prolog
;
5905 parts
[main_part
= num_parts
++] = es_main
;
5906 parts
[next_first_part
= num_parts
++] = gs_prolog
;
5907 parts
[num_parts
++] = gs_main
;
5909 si_build_wrapper_function(&ctx
, parts
, num_parts
,
5910 main_part
, next_first_part
);
5912 LLVMValueRef parts
[2];
5913 union si_shader_part_key prolog_key
;
5915 parts
[1] = ctx
.main_fn
;
5917 memset(&prolog_key
, 0, sizeof(prolog_key
));
5918 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
5919 si_build_gs_prolog_function(&ctx
, &prolog_key
);
5920 parts
[0] = ctx
.main_fn
;
5922 si_build_wrapper_function(&ctx
, parts
, 2, 1, 0);
5924 } else if (shader
->is_monolithic
&& ctx
.type
== PIPE_SHADER_FRAGMENT
) {
5925 LLVMValueRef parts
[3];
5926 union si_shader_part_key prolog_key
;
5927 union si_shader_part_key epilog_key
;
5930 si_get_ps_prolog_key(shader
, &prolog_key
, false);
5931 need_prolog
= si_need_ps_prolog(&prolog_key
);
5933 parts
[need_prolog
? 1 : 0] = ctx
.main_fn
;
5936 si_build_ps_prolog_function(&ctx
, &prolog_key
);
5937 parts
[0] = ctx
.main_fn
;
5940 si_get_ps_epilog_key(shader
, &epilog_key
);
5941 si_build_ps_epilog_function(&ctx
, &epilog_key
);
5942 parts
[need_prolog
? 2 : 1] = ctx
.main_fn
;
5944 si_build_wrapper_function(&ctx
, parts
, need_prolog
? 3 : 2,
5945 need_prolog
? 1 : 0, 0);
5948 si_llvm_optimize_module(&ctx
);
5950 /* Post-optimization transformations and analysis. */
5951 si_optimize_vs_outputs(&ctx
);
5953 if ((debug
&& debug
->debug_message
) ||
5954 si_can_dump_shader(sscreen
, ctx
.type
)) {
5955 ctx
.shader
->info
.private_mem_vgprs
=
5956 ac_count_scratch_private_memory(ctx
.main_fn
);
5959 /* Make sure the input is a pointer and not integer followed by inttoptr. */
5960 assert(LLVMGetTypeKind(LLVMTypeOf(LLVMGetParam(ctx
.main_fn
, 0))) ==
5961 LLVMPointerTypeKind
);
5963 /* Compile to bytecode. */
5964 r
= si_compile_llvm(sscreen
, &shader
->binary
, &shader
->config
, compiler
,
5965 ctx
.ac
.module
, debug
, ctx
.type
, ctx
.ac
.wave_size
,
5966 si_get_shader_name(shader
),
5967 si_should_optimize_less(compiler
, shader
->selector
));
5968 si_llvm_dispose(&ctx
);
5970 fprintf(stderr
, "LLVM failed to compile shader\n");
5974 /* Validate SGPR and VGPR usage for compute to detect compiler bugs.
5975 * LLVM 3.9svn has this bug.
5977 if (sel
->type
== PIPE_SHADER_COMPUTE
) {
5978 unsigned wave_size
= sscreen
->compute_wave_size
;
5979 unsigned max_vgprs
= sscreen
->info
.num_physical_wave64_vgprs_per_simd
*
5980 (wave_size
== 32 ? 2 : 1);
5981 unsigned max_sgprs
= sscreen
->info
.num_physical_sgprs_per_simd
;
5982 unsigned max_sgprs_per_wave
= 128;
5983 unsigned simds_per_tg
= 4; /* assuming WGP mode on gfx10 */
5984 unsigned threads_per_tg
= si_get_max_workgroup_size(shader
);
5985 unsigned waves_per_tg
= DIV_ROUND_UP(threads_per_tg
, wave_size
);
5986 unsigned waves_per_simd
= DIV_ROUND_UP(waves_per_tg
, simds_per_tg
);
5988 max_vgprs
= max_vgprs
/ waves_per_simd
;
5989 max_sgprs
= MIN2(max_sgprs
/ waves_per_simd
, max_sgprs_per_wave
);
5991 if (shader
->config
.num_sgprs
> max_sgprs
||
5992 shader
->config
.num_vgprs
> max_vgprs
) {
5993 fprintf(stderr
, "LLVM failed to compile a shader correctly: "
5994 "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n",
5995 shader
->config
.num_sgprs
, shader
->config
.num_vgprs
,
5996 max_sgprs
, max_vgprs
);
5998 /* Just terminate the process, because dependent
5999 * shaders can hang due to bad input data, but use
6000 * the env var to allow shader-db to work.
6002 if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false))
6007 /* Add the scratch offset to input SGPRs. */
6008 if (shader
->config
.scratch_bytes_per_wave
&& !is_merged_shader(&ctx
))
6009 shader
->info
.num_input_sgprs
+= 1; /* scratch byte offset */
6011 /* Calculate the number of fragment input VGPRs. */
6012 if (ctx
.type
== PIPE_SHADER_FRAGMENT
) {
6013 shader
->info
.num_input_vgprs
= ac_get_fs_input_vgpr_cnt(&shader
->config
,
6014 &shader
->info
.face_vgpr_index
,
6015 &shader
->info
.ancillary_vgpr_index
);
6018 si_calculate_max_simd_waves(shader
);
6019 si_shader_dump_stats_for_shader_db(sscreen
, shader
, debug
);
6024 * Create, compile and return a shader part (prolog or epilog).
6026 * \param sscreen screen
6027 * \param list list of shader parts of the same category
6028 * \param type shader type
6029 * \param key shader part key
6030 * \param prolog whether the part being requested is a prolog
6031 * \param tm LLVM target machine
6032 * \param debug debug callback
6033 * \param build the callback responsible for building the main function
6034 * \return non-NULL on success
6036 static struct si_shader_part
*
6037 si_get_shader_part(struct si_screen
*sscreen
,
6038 struct si_shader_part
**list
,
6039 enum pipe_shader_type type
,
6041 union si_shader_part_key
*key
,
6042 struct ac_llvm_compiler
*compiler
,
6043 struct pipe_debug_callback
*debug
,
6044 void (*build
)(struct si_shader_context
*,
6045 union si_shader_part_key
*),
6048 struct si_shader_part
*result
;
6050 simple_mtx_lock(&sscreen
->shader_parts_mutex
);
6052 /* Find existing. */
6053 for (result
= *list
; result
; result
= result
->next
) {
6054 if (memcmp(&result
->key
, key
, sizeof(*key
)) == 0) {
6055 simple_mtx_unlock(&sscreen
->shader_parts_mutex
);
6060 /* Compile a new one. */
6061 result
= CALLOC_STRUCT(si_shader_part
);
6064 struct si_shader shader
= {};
6067 case PIPE_SHADER_VERTEX
:
6068 shader
.key
.as_ls
= key
->vs_prolog
.as_ls
;
6069 shader
.key
.as_es
= key
->vs_prolog
.as_es
;
6070 shader
.key
.as_ngg
= key
->vs_prolog
.as_ngg
;
6072 case PIPE_SHADER_TESS_CTRL
:
6074 shader
.key
.part
.tcs
.epilog
= key
->tcs_epilog
.states
;
6076 case PIPE_SHADER_GEOMETRY
:
6078 shader
.key
.as_ngg
= key
->gs_prolog
.as_ngg
;
6080 case PIPE_SHADER_FRAGMENT
:
6082 shader
.key
.part
.ps
.prolog
= key
->ps_prolog
.states
;
6084 shader
.key
.part
.ps
.epilog
= key
->ps_epilog
.states
;
6087 unreachable("bad shader part");
6090 struct si_shader_context ctx
;
6091 si_llvm_context_init(&ctx
, sscreen
, compiler
,
6092 si_get_wave_size(sscreen
, type
, shader
.key
.as_ngg
,
6094 ctx
.shader
= &shader
;
6100 si_llvm_optimize_module(&ctx
);
6102 if (si_compile_llvm(sscreen
, &result
->binary
, &result
->config
, compiler
,
6103 ctx
.ac
.module
, debug
, ctx
.type
, ctx
.ac
.wave_size
,
6110 result
->next
= *list
;
6114 si_llvm_dispose(&ctx
);
6115 simple_mtx_unlock(&sscreen
->shader_parts_mutex
);
6119 static LLVMValueRef
si_prolog_get_rw_buffers(struct si_shader_context
*ctx
)
6121 LLVMValueRef ptr
[2], list
;
6122 bool merged_shader
= is_merged_shader(ctx
);
6124 ptr
[0] = LLVMGetParam(ctx
->main_fn
, (merged_shader
? 8 : 0) + SI_SGPR_RW_BUFFERS
);
6125 list
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
[0],
6126 ac_array_in_const32_addr_space(ctx
->v4i32
), "");
6131 * Build the vertex shader prolog function.
6133 * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values).
6134 * All inputs are returned unmodified. The vertex load indices are
6135 * stored after them, which will be used by the API VS for fetching inputs.
6137 * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are:
6142 * (VertexID + BaseVertex),
6143 * (InstanceID + StartInstance),
6144 * (InstanceID / 2 + StartInstance)
6146 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
6147 union si_shader_part_key
*key
)
6149 LLVMTypeRef
*returns
;
6150 LLVMValueRef ret
, func
;
6152 unsigned first_vs_vgpr
= key
->vs_prolog
.num_merged_next_stage_vgprs
;
6153 unsigned num_input_vgprs
= key
->vs_prolog
.num_merged_next_stage_vgprs
+ 4;
6154 struct ac_arg input_sgpr_param
[key
->vs_prolog
.num_input_sgprs
];
6155 struct ac_arg input_vgpr_param
[9];
6156 LLVMValueRef input_vgprs
[9];
6157 unsigned num_all_input_regs
= key
->vs_prolog
.num_input_sgprs
+
6159 unsigned user_sgpr_base
= key
->vs_prolog
.num_merged_next_stage_vgprs
? 8 : 0;
6161 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
6163 /* 4 preloaded VGPRs + vertex load indices as prolog outputs */
6164 returns
= alloca((num_all_input_regs
+ key
->vs_prolog
.num_inputs
) *
6165 sizeof(LLVMTypeRef
));
6168 /* Declare input and output SGPRs. */
6169 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
6170 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6171 &input_sgpr_param
[i
]);
6172 returns
[num_returns
++] = ctx
->i32
;
6175 struct ac_arg merged_wave_info
= input_sgpr_param
[3];
6177 /* Preloaded VGPRs (outputs must be floats) */
6178 for (i
= 0; i
< num_input_vgprs
; i
++) {
6179 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &input_vgpr_param
[i
]);
6180 returns
[num_returns
++] = ctx
->f32
;
6183 /* Vertex load indices. */
6184 for (i
= 0; i
< key
->vs_prolog
.num_inputs
; i
++)
6185 returns
[num_returns
++] = ctx
->f32
;
6187 /* Create the function. */
6188 si_llvm_create_func(ctx
, "vs_prolog", returns
, num_returns
, 0);
6189 func
= ctx
->main_fn
;
6191 for (i
= 0; i
< num_input_vgprs
; i
++) {
6192 input_vgprs
[i
] = ac_get_arg(&ctx
->ac
, input_vgpr_param
[i
]);
6195 if (key
->vs_prolog
.num_merged_next_stage_vgprs
) {
6196 if (!key
->vs_prolog
.is_monolithic
)
6197 si_init_exec_from_input(ctx
, merged_wave_info
, 0);
6199 if (key
->vs_prolog
.as_ls
&&
6200 ctx
->screen
->info
.has_ls_vgpr_init_bug
) {
6201 /* If there are no HS threads, SPI loads the LS VGPRs
6202 * starting at VGPR 0. Shift them back to where they
6205 LLVMValueRef has_hs_threads
=
6206 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
6207 si_unpack_param(ctx
, input_sgpr_param
[3], 8, 8),
6210 for (i
= 4; i
> 0; --i
) {
6211 input_vgprs
[i
+ 1] =
6212 LLVMBuildSelect(ctx
->ac
.builder
, has_hs_threads
,
6214 input_vgprs
[i
- 1], "");
6219 unsigned vertex_id_vgpr
= first_vs_vgpr
;
6220 unsigned instance_id_vgpr
=
6221 ctx
->screen
->info
.chip_class
>= GFX10
?
6223 first_vs_vgpr
+ (key
->vs_prolog
.as_ls
? 2 : 1);
6225 ctx
->abi
.vertex_id
= input_vgprs
[vertex_id_vgpr
];
6226 ctx
->abi
.instance_id
= input_vgprs
[instance_id_vgpr
];
6228 /* InstanceID = VertexID >> 16;
6229 * VertexID = VertexID & 0xffff;
6231 if (key
->vs_prolog
.states
.unpack_instance_id_from_vertex_id
) {
6232 ctx
->abi
.instance_id
= LLVMBuildLShr(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
6233 LLVMConstInt(ctx
->i32
, 16, 0), "");
6234 ctx
->abi
.vertex_id
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
.vertex_id
,
6235 LLVMConstInt(ctx
->i32
, 0xffff, 0), "");
6238 /* Copy inputs to outputs. This should be no-op, as the registers match,
6239 * but it will prevent the compiler from overwriting them unintentionally.
6241 ret
= ctx
->return_value
;
6242 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
6243 LLVMValueRef p
= LLVMGetParam(func
, i
);
6244 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
6246 for (i
= 0; i
< num_input_vgprs
; i
++) {
6247 LLVMValueRef p
= input_vgprs
[i
];
6249 if (i
== vertex_id_vgpr
)
6250 p
= ctx
->abi
.vertex_id
;
6251 else if (i
== instance_id_vgpr
)
6252 p
= ctx
->abi
.instance_id
;
6254 p
= ac_to_float(&ctx
->ac
, p
);
6255 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
,
6256 key
->vs_prolog
.num_input_sgprs
+ i
, "");
6259 /* Compute vertex load indices from instance divisors. */
6260 LLVMValueRef instance_divisor_constbuf
= NULL
;
6262 if (key
->vs_prolog
.states
.instance_divisor_is_fetched
) {
6263 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
6264 LLVMValueRef buf_index
=
6265 LLVMConstInt(ctx
->i32
, SI_VS_CONST_INSTANCE_DIVISORS
, 0);
6266 instance_divisor_constbuf
=
6267 ac_build_load_to_sgpr(&ctx
->ac
, list
, buf_index
);
6270 for (i
= 0; i
< key
->vs_prolog
.num_inputs
; i
++) {
6271 bool divisor_is_one
=
6272 key
->vs_prolog
.states
.instance_divisor_is_one
& (1u << i
);
6273 bool divisor_is_fetched
=
6274 key
->vs_prolog
.states
.instance_divisor_is_fetched
& (1u << i
);
6275 LLVMValueRef index
= NULL
;
6277 if (divisor_is_one
) {
6278 index
= ctx
->abi
.instance_id
;
6279 } else if (divisor_is_fetched
) {
6280 LLVMValueRef udiv_factors
[4];
6282 for (unsigned j
= 0; j
< 4; j
++) {
6284 buffer_load_const(ctx
, instance_divisor_constbuf
,
6285 LLVMConstInt(ctx
->i32
, i
*16 + j
*4, 0));
6286 udiv_factors
[j
] = ac_to_integer(&ctx
->ac
, udiv_factors
[j
]);
6288 /* The faster NUW version doesn't work when InstanceID == UINT_MAX.
6289 * Such InstanceID might not be achievable in a reasonable time though.
6291 index
= ac_build_fast_udiv_nuw(&ctx
->ac
, ctx
->abi
.instance_id
,
6292 udiv_factors
[0], udiv_factors
[1],
6293 udiv_factors
[2], udiv_factors
[3]);
6296 if (divisor_is_one
|| divisor_is_fetched
) {
6297 /* Add StartInstance. */
6298 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
6299 LLVMGetParam(ctx
->main_fn
, user_sgpr_base
+
6300 SI_SGPR_START_INSTANCE
), "");
6302 /* VertexID + BaseVertex */
6303 index
= LLVMBuildAdd(ctx
->ac
.builder
,
6305 LLVMGetParam(func
, user_sgpr_base
+
6306 SI_SGPR_BASE_VERTEX
), "");
6309 index
= ac_to_float(&ctx
->ac
, index
);
6310 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, index
,
6311 ctx
->args
.arg_count
+ i
, "");
6314 si_llvm_build_ret(ctx
, ret
);
6317 static bool si_get_vs_prolog(struct si_screen
*sscreen
,
6318 struct ac_llvm_compiler
*compiler
,
6319 struct si_shader
*shader
,
6320 struct pipe_debug_callback
*debug
,
6321 struct si_shader
*main_part
,
6322 const struct si_vs_prolog_bits
*key
)
6324 struct si_shader_selector
*vs
= main_part
->selector
;
6326 if (!si_vs_needs_prolog(vs
, key
))
6329 /* Get the prolog. */
6330 union si_shader_part_key prolog_key
;
6331 si_get_vs_prolog_key(&vs
->info
, main_part
->info
.num_input_sgprs
,
6332 key
, shader
, &prolog_key
);
6335 si_get_shader_part(sscreen
, &sscreen
->vs_prologs
,
6336 PIPE_SHADER_VERTEX
, true, &prolog_key
, compiler
,
6337 debug
, si_build_vs_prolog_function
,
6338 "Vertex Shader Prolog");
6339 return shader
->prolog
!= NULL
;
6343 * Select and compile (or reuse) vertex shader parts (prolog & epilog).
6345 static bool si_shader_select_vs_parts(struct si_screen
*sscreen
,
6346 struct ac_llvm_compiler
*compiler
,
6347 struct si_shader
*shader
,
6348 struct pipe_debug_callback
*debug
)
6350 return si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, shader
,
6351 &shader
->key
.part
.vs
.prolog
);
6355 * Compile the TCS epilog function. This writes tesselation factors to memory
6356 * based on the output primitive type of the tesselator (determined by TES).
6358 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
6359 union si_shader_part_key
*key
)
6361 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
6363 if (ctx
->screen
->info
.chip_class
>= GFX9
) {
6364 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6365 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6366 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6367 &ctx
->tcs_offchip_offset
);
6368 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
); /* wave info */
6369 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6370 &ctx
->tcs_factor_offset
);
6371 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6372 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6373 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6374 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6375 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6376 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6377 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6378 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6379 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6380 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6381 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6382 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6383 &ctx
->tcs_offchip_layout
);
6384 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6385 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6386 &ctx
->tcs_out_lds_layout
);
6388 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6389 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6390 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6391 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6392 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6393 &ctx
->tcs_offchip_layout
);
6394 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6395 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6396 &ctx
->tcs_out_lds_layout
);
6397 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6398 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6399 &ctx
->tcs_offchip_offset
);
6400 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6401 &ctx
->tcs_factor_offset
);
6404 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* VGPR gap */
6405 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, NULL
); /* VGPR gap */
6406 struct ac_arg rel_patch_id
; /* patch index within the wave (REL_PATCH_ID) */
6407 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &rel_patch_id
);
6408 struct ac_arg invocation_id
; /* invocation ID within the patch */
6409 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &invocation_id
);
6410 struct ac_arg tcs_out_current_patch_data_offset
; /* LDS offset where tess factors should be loaded from */
6411 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
,
6412 &tcs_out_current_patch_data_offset
);
6414 struct ac_arg tess_factors
[6];
6415 for (unsigned i
= 0; i
< 6; i
++)
6416 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_INT
, &tess_factors
[i
]);
6418 /* Create the function. */
6419 si_llvm_create_func(ctx
, "tcs_epilog", NULL
, 0,
6420 ctx
->screen
->info
.chip_class
>= GFX7
? 128 : 0);
6421 ac_declare_lds_as_pointer(&ctx
->ac
);
6423 LLVMValueRef invoc0_tess_factors
[6];
6424 for (unsigned i
= 0; i
< 6; i
++)
6425 invoc0_tess_factors
[i
] = ac_get_arg(&ctx
->ac
, tess_factors
[i
]);
6427 si_write_tess_factors(ctx
,
6428 ac_get_arg(&ctx
->ac
, rel_patch_id
),
6429 ac_get_arg(&ctx
->ac
, invocation_id
),
6430 ac_get_arg(&ctx
->ac
, tcs_out_current_patch_data_offset
),
6431 invoc0_tess_factors
, invoc0_tess_factors
+ 4);
6433 LLVMBuildRetVoid(ctx
->ac
.builder
);
6437 * Select and compile (or reuse) TCS parts (epilog).
6439 static bool si_shader_select_tcs_parts(struct si_screen
*sscreen
,
6440 struct ac_llvm_compiler
*compiler
,
6441 struct si_shader
*shader
,
6442 struct pipe_debug_callback
*debug
)
6444 if (sscreen
->info
.chip_class
>= GFX9
) {
6445 struct si_shader
*ls_main_part
=
6446 shader
->key
.part
.tcs
.ls
->main_shader_part_ls
;
6448 if (!si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, ls_main_part
,
6449 &shader
->key
.part
.tcs
.ls_prolog
))
6452 shader
->previous_stage
= ls_main_part
;
6455 /* Get the epilog. */
6456 union si_shader_part_key epilog_key
;
6457 memset(&epilog_key
, 0, sizeof(epilog_key
));
6458 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6460 shader
->epilog
= si_get_shader_part(sscreen
, &sscreen
->tcs_epilogs
,
6461 PIPE_SHADER_TESS_CTRL
, false,
6462 &epilog_key
, compiler
, debug
,
6463 si_build_tcs_epilog_function
,
6464 "Tessellation Control Shader Epilog");
6465 return shader
->epilog
!= NULL
;
6469 * Select and compile (or reuse) GS parts (prolog).
6471 static bool si_shader_select_gs_parts(struct si_screen
*sscreen
,
6472 struct ac_llvm_compiler
*compiler
,
6473 struct si_shader
*shader
,
6474 struct pipe_debug_callback
*debug
)
6476 if (sscreen
->info
.chip_class
>= GFX9
) {
6477 struct si_shader
*es_main_part
;
6478 enum pipe_shader_type es_type
= shader
->key
.part
.gs
.es
->type
;
6480 if (shader
->key
.as_ngg
)
6481 es_main_part
= shader
->key
.part
.gs
.es
->main_shader_part_ngg_es
;
6483 es_main_part
= shader
->key
.part
.gs
.es
->main_shader_part_es
;
6485 if (es_type
== PIPE_SHADER_VERTEX
&&
6486 !si_get_vs_prolog(sscreen
, compiler
, shader
, debug
, es_main_part
,
6487 &shader
->key
.part
.gs
.vs_prolog
))
6490 shader
->previous_stage
= es_main_part
;
6493 if (!shader
->key
.part
.gs
.prolog
.tri_strip_adj_fix
)
6496 union si_shader_part_key prolog_key
;
6497 memset(&prolog_key
, 0, sizeof(prolog_key
));
6498 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
6499 prolog_key
.gs_prolog
.as_ngg
= shader
->key
.as_ngg
;
6501 shader
->prolog2
= si_get_shader_part(sscreen
, &sscreen
->gs_prologs
,
6502 PIPE_SHADER_GEOMETRY
, true,
6503 &prolog_key
, compiler
, debug
,
6504 si_build_gs_prolog_function
,
6505 "Geometry Shader Prolog");
6506 return shader
->prolog2
!= NULL
;
6510 * Build the pixel shader prolog function. This handles:
6511 * - two-side color selection and interpolation
6512 * - overriding interpolation parameters for the API PS
6513 * - polygon stippling
6515 * All preloaded SGPRs and VGPRs are passed through unmodified unless they are
6516 * overriden by other states. (e.g. per-sample interpolation)
6517 * Interpolated colors are stored after the preloaded VGPRs.
6519 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
6520 union si_shader_part_key
*key
)
6522 LLVMValueRef ret
, func
;
6523 int num_returns
, i
, num_color_channels
;
6525 assert(si_need_ps_prolog(key
));
6527 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
6529 /* Declare inputs. */
6530 LLVMTypeRef return_types
[AC_MAX_ARGS
];
6532 num_color_channels
= util_bitcount(key
->ps_prolog
.colors_read
);
6533 assert(key
->ps_prolog
.num_input_sgprs
+
6534 key
->ps_prolog
.num_input_vgprs
+
6535 num_color_channels
<= AC_MAX_ARGS
);
6536 for (i
= 0; i
< key
->ps_prolog
.num_input_sgprs
; i
++) {
6537 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, NULL
);
6538 return_types
[num_returns
++] = ctx
->i32
;
6542 struct ac_arg pos_fixed_pt
;
6543 struct ac_arg ancillary
;
6544 struct ac_arg param_sample_mask
;
6545 for (i
= 0; i
< key
->ps_prolog
.num_input_vgprs
; i
++) {
6546 struct ac_arg
*arg
= NULL
;
6547 if (i
== key
->ps_prolog
.ancillary_vgpr_index
) {
6549 } else if (i
== key
->ps_prolog
.ancillary_vgpr_index
+ 1) {
6550 arg
= ¶m_sample_mask
;
6551 } else if (i
== key
->ps_prolog
.num_input_vgprs
- 1) {
6552 /* POS_FIXED_PT is always last. */
6553 arg
= &pos_fixed_pt
;
6555 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
, arg
);
6556 return_types
[num_returns
++] = ctx
->f32
;
6559 /* Declare outputs (same as inputs + add colors if needed) */
6560 for (i
= 0; i
< num_color_channels
; i
++)
6561 return_types
[num_returns
++] = ctx
->f32
;
6563 /* Create the function. */
6564 si_llvm_create_func(ctx
, "ps_prolog", return_types
, num_returns
, 0);
6565 func
= ctx
->main_fn
;
6567 /* Copy inputs to outputs. This should be no-op, as the registers match,
6568 * but it will prevent the compiler from overwriting them unintentionally.
6570 ret
= ctx
->return_value
;
6571 for (i
= 0; i
< ctx
->args
.arg_count
; i
++) {
6572 LLVMValueRef p
= LLVMGetParam(func
, i
);
6573 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
6576 /* Polygon stippling. */
6577 if (key
->ps_prolog
.states
.poly_stipple
) {
6578 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
6580 si_llvm_emit_polygon_stipple(ctx
, list
, pos_fixed_pt
);
6583 if (key
->ps_prolog
.states
.bc_optimize_for_persp
||
6584 key
->ps_prolog
.states
.bc_optimize_for_linear
) {
6585 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
6586 LLVMValueRef center
[2], centroid
[2], tmp
, bc_optimize
;
6588 /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER;
6589 * The hw doesn't compute CENTROID if the whole wave only
6590 * contains fully-covered quads.
6592 * PRIM_MASK is after user SGPRs.
6594 bc_optimize
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
6595 bc_optimize
= LLVMBuildLShr(ctx
->ac
.builder
, bc_optimize
,
6596 LLVMConstInt(ctx
->i32
, 31, 0), "");
6597 bc_optimize
= LLVMBuildTrunc(ctx
->ac
.builder
, bc_optimize
,
6600 if (key
->ps_prolog
.states
.bc_optimize_for_persp
) {
6601 /* Read PERSP_CENTER. */
6602 for (i
= 0; i
< 2; i
++)
6603 center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
6604 /* Read PERSP_CENTROID. */
6605 for (i
= 0; i
< 2; i
++)
6606 centroid
[i
] = LLVMGetParam(func
, base
+ 4 + i
);
6607 /* Select PERSP_CENTROID. */
6608 for (i
= 0; i
< 2; i
++) {
6609 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
6610 center
[i
], centroid
[i
], "");
6611 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6612 tmp
, base
+ 4 + i
, "");
6615 if (key
->ps_prolog
.states
.bc_optimize_for_linear
) {
6616 /* Read LINEAR_CENTER. */
6617 for (i
= 0; i
< 2; i
++)
6618 center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
6619 /* Read LINEAR_CENTROID. */
6620 for (i
= 0; i
< 2; i
++)
6621 centroid
[i
] = LLVMGetParam(func
, base
+ 10 + i
);
6622 /* Select LINEAR_CENTROID. */
6623 for (i
= 0; i
< 2; i
++) {
6624 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
6625 center
[i
], centroid
[i
], "");
6626 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6627 tmp
, base
+ 10 + i
, "");
6632 /* Force per-sample interpolation. */
6633 if (key
->ps_prolog
.states
.force_persp_sample_interp
) {
6634 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
6635 LLVMValueRef persp_sample
[2];
6637 /* Read PERSP_SAMPLE. */
6638 for (i
= 0; i
< 2; i
++)
6639 persp_sample
[i
] = LLVMGetParam(func
, base
+ i
);
6640 /* Overwrite PERSP_CENTER. */
6641 for (i
= 0; i
< 2; i
++)
6642 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6643 persp_sample
[i
], base
+ 2 + i
, "");
6644 /* Overwrite PERSP_CENTROID. */
6645 for (i
= 0; i
< 2; i
++)
6646 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6647 persp_sample
[i
], base
+ 4 + i
, "");
6649 if (key
->ps_prolog
.states
.force_linear_sample_interp
) {
6650 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
6651 LLVMValueRef linear_sample
[2];
6653 /* Read LINEAR_SAMPLE. */
6654 for (i
= 0; i
< 2; i
++)
6655 linear_sample
[i
] = LLVMGetParam(func
, base
+ 6 + i
);
6656 /* Overwrite LINEAR_CENTER. */
6657 for (i
= 0; i
< 2; i
++)
6658 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6659 linear_sample
[i
], base
+ 8 + i
, "");
6660 /* Overwrite LINEAR_CENTROID. */
6661 for (i
= 0; i
< 2; i
++)
6662 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6663 linear_sample
[i
], base
+ 10 + i
, "");
6666 /* Force center interpolation. */
6667 if (key
->ps_prolog
.states
.force_persp_center_interp
) {
6668 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
6669 LLVMValueRef persp_center
[2];
6671 /* Read PERSP_CENTER. */
6672 for (i
= 0; i
< 2; i
++)
6673 persp_center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
6674 /* Overwrite PERSP_SAMPLE. */
6675 for (i
= 0; i
< 2; i
++)
6676 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6677 persp_center
[i
], base
+ i
, "");
6678 /* Overwrite PERSP_CENTROID. */
6679 for (i
= 0; i
< 2; i
++)
6680 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6681 persp_center
[i
], base
+ 4 + i
, "");
6683 if (key
->ps_prolog
.states
.force_linear_center_interp
) {
6684 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
6685 LLVMValueRef linear_center
[2];
6687 /* Read LINEAR_CENTER. */
6688 for (i
= 0; i
< 2; i
++)
6689 linear_center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
6690 /* Overwrite LINEAR_SAMPLE. */
6691 for (i
= 0; i
< 2; i
++)
6692 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6693 linear_center
[i
], base
+ 6 + i
, "");
6694 /* Overwrite LINEAR_CENTROID. */
6695 for (i
= 0; i
< 2; i
++)
6696 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
6697 linear_center
[i
], base
+ 10 + i
, "");
6700 /* Interpolate colors. */
6701 unsigned color_out_idx
= 0;
6702 for (i
= 0; i
< 2; i
++) {
6703 unsigned writemask
= (key
->ps_prolog
.colors_read
>> (i
* 4)) & 0xf;
6704 unsigned face_vgpr
= key
->ps_prolog
.num_input_sgprs
+
6705 key
->ps_prolog
.face_vgpr_index
;
6706 LLVMValueRef interp
[2], color
[4];
6707 LLVMValueRef interp_ij
= NULL
, prim_mask
= NULL
, face
= NULL
;
6712 /* If the interpolation qualifier is not CONSTANT (-1). */
6713 if (key
->ps_prolog
.color_interp_vgpr_index
[i
] != -1) {
6714 unsigned interp_vgpr
= key
->ps_prolog
.num_input_sgprs
+
6715 key
->ps_prolog
.color_interp_vgpr_index
[i
];
6717 /* Get the (i,j) updated by bc_optimize handling. */
6718 interp
[0] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
6720 interp
[1] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
6721 interp_vgpr
+ 1, "");
6722 interp_ij
= ac_build_gather_values(&ctx
->ac
, interp
, 2);
6725 /* Use the absolute location of the input. */
6726 prim_mask
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
6728 if (key
->ps_prolog
.states
.color_two_side
) {
6729 face
= LLVMGetParam(func
, face_vgpr
);
6730 face
= ac_to_integer(&ctx
->ac
, face
);
6733 interp_fs_color(ctx
,
6734 key
->ps_prolog
.color_attr_index
[i
], i
,
6735 key
->ps_prolog
.num_interp_inputs
,
6736 key
->ps_prolog
.colors_read
, interp_ij
,
6737 prim_mask
, face
, color
);
6740 unsigned chan
= u_bit_scan(&writemask
);
6741 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, color
[chan
],
6742 ctx
->args
.arg_count
+ color_out_idx
++, "");
6746 /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec
6749 * "When per-sample shading is active due to the use of a fragment
6750 * input qualified by sample or due to the use of the gl_SampleID
6751 * or gl_SamplePosition variables, only the bit for the current
6752 * sample is set in gl_SampleMaskIn. When state specifies multiple
6753 * fragment shader invocations for a given fragment, the sample
6754 * mask for any single fragment shader invocation may specify a
6755 * subset of the covered samples for the fragment. In this case,
6756 * the bit corresponding to each covered sample will be set in
6757 * exactly one fragment shader invocation."
6759 * The samplemask loaded by hardware is always the coverage of the
6760 * entire pixel/fragment, so mask bits out based on the sample ID.
6762 if (key
->ps_prolog
.states
.samplemask_log_ps_iter
) {
6763 /* The bit pattern matches that used by fixed function fragment
6765 static const uint16_t ps_iter_masks
[] = {
6766 0xffff, /* not used */
6772 assert(key
->ps_prolog
.states
.samplemask_log_ps_iter
< ARRAY_SIZE(ps_iter_masks
));
6774 uint32_t ps_iter_mask
= ps_iter_masks
[key
->ps_prolog
.states
.samplemask_log_ps_iter
];
6775 LLVMValueRef sampleid
= si_unpack_param(ctx
, ancillary
, 8, 4);
6776 LLVMValueRef samplemask
= ac_get_arg(&ctx
->ac
, param_sample_mask
);
6778 samplemask
= ac_to_integer(&ctx
->ac
, samplemask
);
6779 samplemask
= LLVMBuildAnd(
6782 LLVMBuildShl(ctx
->ac
.builder
,
6783 LLVMConstInt(ctx
->i32
, ps_iter_mask
, false),
6786 samplemask
= ac_to_float(&ctx
->ac
, samplemask
);
6788 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, samplemask
,
6789 param_sample_mask
.arg_index
, "");
6792 /* Tell LLVM to insert WQM instruction sequence when needed. */
6793 if (key
->ps_prolog
.wqm
) {
6794 LLVMAddTargetDependentFunctionAttr(func
,
6795 "amdgpu-ps-wqm-outputs", "");
6798 si_llvm_build_ret(ctx
, ret
);
6802 * Build the pixel shader epilog function. This handles everything that must be
6803 * emulated for pixel shader exports. (alpha-test, format conversions, etc)
6805 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
6806 union si_shader_part_key
*key
)
6808 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
6810 struct si_ps_exports exp
= {};
6812 memset(&ctx
->args
, 0, sizeof(ctx
->args
));
6814 /* Declare input SGPRs. */
6815 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
, &ctx
->rw_buffers
);
6816 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6817 &ctx
->bindless_samplers_and_images
);
6818 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6819 &ctx
->const_and_shader_buffers
);
6820 ac_add_arg(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_INT
,
6821 &ctx
->samplers_and_images
);
6822 add_arg_checked(&ctx
->args
, AC_ARG_SGPR
, 1, AC_ARG_FLOAT
,
6823 NULL
, SI_PARAM_ALPHA_REF
);
6825 /* Declare input VGPRs. */
6826 unsigned required_num_params
=
6827 ctx
->args
.num_sgprs_used
+
6828 util_bitcount(key
->ps_epilog
.colors_written
) * 4 +
6829 key
->ps_epilog
.writes_z
+
6830 key
->ps_epilog
.writes_stencil
+
6831 key
->ps_epilog
.writes_samplemask
;
6833 required_num_params
= MAX2(required_num_params
,
6834 ctx
->args
.num_sgprs_used
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
6836 while (ctx
->args
.arg_count
< required_num_params
)
6837 ac_add_arg(&ctx
->args
, AC_ARG_VGPR
, 1, AC_ARG_FLOAT
, NULL
);
6839 /* Create the function. */
6840 si_llvm_create_func(ctx
, "ps_epilog", NULL
, 0, 0);
6841 /* Disable elimination of unused inputs. */
6842 ac_llvm_add_target_dep_function_attr(ctx
->main_fn
,
6843 "InitialPSInputAddr", 0xffffff);
6845 /* Process colors. */
6846 unsigned vgpr
= ctx
->args
.num_sgprs_used
;
6847 unsigned colors_written
= key
->ps_epilog
.colors_written
;
6848 int last_color_export
= -1;
6850 /* Find the last color export. */
6851 if (!key
->ps_epilog
.writes_z
&&
6852 !key
->ps_epilog
.writes_stencil
&&
6853 !key
->ps_epilog
.writes_samplemask
) {
6854 unsigned spi_format
= key
->ps_epilog
.states
.spi_shader_col_format
;
6856 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
6857 if (colors_written
== 0x1 && key
->ps_epilog
.states
.last_cbuf
> 0) {
6858 /* Just set this if any of the colorbuffers are enabled. */
6860 ((1ull << (4 * (key
->ps_epilog
.states
.last_cbuf
+ 1))) - 1))
6861 last_color_export
= 0;
6863 for (i
= 0; i
< 8; i
++)
6864 if (colors_written
& (1 << i
) &&
6865 (spi_format
>> (i
* 4)) & 0xf)
6866 last_color_export
= i
;
6870 while (colors_written
) {
6871 LLVMValueRef color
[4];
6872 int mrt
= u_bit_scan(&colors_written
);
6874 for (i
= 0; i
< 4; i
++)
6875 color
[i
] = LLVMGetParam(ctx
->main_fn
, vgpr
++);
6877 si_export_mrt_color(ctx
, color
, mrt
,
6878 ctx
->args
.arg_count
- 1,
6879 mrt
== last_color_export
, &exp
);
6882 /* Process depth, stencil, samplemask. */
6883 if (key
->ps_epilog
.writes_z
)
6884 depth
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
6885 if (key
->ps_epilog
.writes_stencil
)
6886 stencil
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
6887 if (key
->ps_epilog
.writes_samplemask
)
6888 samplemask
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
6890 if (depth
|| stencil
|| samplemask
)
6891 si_export_mrt_z(ctx
, depth
, stencil
, samplemask
, &exp
);
6892 else if (last_color_export
== -1)
6893 ac_build_export_null(&ctx
->ac
);
6896 si_emit_ps_exports(ctx
, &exp
);
6899 LLVMBuildRetVoid(ctx
->ac
.builder
);
6903 * Select and compile (or reuse) pixel shader parts (prolog & epilog).
6905 static bool si_shader_select_ps_parts(struct si_screen
*sscreen
,
6906 struct ac_llvm_compiler
*compiler
,
6907 struct si_shader
*shader
,
6908 struct pipe_debug_callback
*debug
)
6910 union si_shader_part_key prolog_key
;
6911 union si_shader_part_key epilog_key
;
6913 /* Get the prolog. */
6914 si_get_ps_prolog_key(shader
, &prolog_key
, true);
6916 /* The prolog is a no-op if these aren't set. */
6917 if (si_need_ps_prolog(&prolog_key
)) {
6919 si_get_shader_part(sscreen
, &sscreen
->ps_prologs
,
6920 PIPE_SHADER_FRAGMENT
, true,
6921 &prolog_key
, compiler
, debug
,
6922 si_build_ps_prolog_function
,
6923 "Fragment Shader Prolog");
6924 if (!shader
->prolog
)
6928 /* Get the epilog. */
6929 si_get_ps_epilog_key(shader
, &epilog_key
);
6932 si_get_shader_part(sscreen
, &sscreen
->ps_epilogs
,
6933 PIPE_SHADER_FRAGMENT
, false,
6934 &epilog_key
, compiler
, debug
,
6935 si_build_ps_epilog_function
,
6936 "Fragment Shader Epilog");
6937 if (!shader
->epilog
)
6940 /* Enable POS_FIXED_PT if polygon stippling is enabled. */
6941 if (shader
->key
.part
.ps
.prolog
.poly_stipple
) {
6942 shader
->config
.spi_ps_input_ena
|= S_0286CC_POS_FIXED_PT_ENA(1);
6943 assert(G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
));
6946 /* Set up the enable bits for per-sample shading if needed. */
6947 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
&&
6948 (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
6949 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
6950 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTER_ENA
;
6951 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
6952 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_SAMPLE_ENA(1);
6954 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
&&
6955 (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
6956 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
6957 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTER_ENA
;
6958 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
6959 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_SAMPLE_ENA(1);
6961 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
&&
6962 (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
6963 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
6964 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_SAMPLE_ENA
;
6965 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
6966 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
6968 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
&&
6969 (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
6970 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
6971 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_SAMPLE_ENA
;
6972 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
6973 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
6976 /* POW_W_FLOAT requires that one of the perspective weights is enabled. */
6977 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_ena
) &&
6978 !(shader
->config
.spi_ps_input_ena
& 0xf)) {
6979 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
6980 assert(G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
6983 /* At least one pair of interpolation weights must be enabled. */
6984 if (!(shader
->config
.spi_ps_input_ena
& 0x7f)) {
6985 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
6986 assert(G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
6989 /* Samplemask fixup requires the sample ID. */
6990 if (shader
->key
.part
.ps
.prolog
.samplemask_log_ps_iter
) {
6991 shader
->config
.spi_ps_input_ena
|= S_0286CC_ANCILLARY_ENA(1);
6992 assert(G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
));
6995 /* The sample mask input is always enabled, because the API shader always
6996 * passes it through to the epilog. Disable it here if it's unused.
6998 if (!shader
->key
.part
.ps
.epilog
.poly_line_smoothing
&&
6999 !shader
->selector
->info
.reads_samplemask
)
7000 shader
->config
.spi_ps_input_ena
&= C_0286CC_SAMPLE_COVERAGE_ENA
;
7005 void si_multiwave_lds_size_workaround(struct si_screen
*sscreen
,
7008 /* If tessellation is all offchip and on-chip GS isn't used, this
7009 * workaround is not needed.
7013 /* SPI barrier management bug:
7014 * Make sure we have at least 4k of LDS in use to avoid the bug.
7015 * It applies to workgroup sizes of more than one wavefront.
7017 if (sscreen
->info
.family
== CHIP_BONAIRE
||
7018 sscreen
->info
.family
== CHIP_KABINI
)
7019 *lds_size
= MAX2(*lds_size
, 8);
7022 static void si_fix_resource_usage(struct si_screen
*sscreen
,
7023 struct si_shader
*shader
)
7025 unsigned min_sgprs
= shader
->info
.num_input_sgprs
+ 2; /* VCC */
7027 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
, min_sgprs
);
7029 if (shader
->selector
->type
== PIPE_SHADER_COMPUTE
&&
7030 si_get_max_workgroup_size(shader
) > sscreen
->compute_wave_size
) {
7031 si_multiwave_lds_size_workaround(sscreen
,
7032 &shader
->config
.lds_size
);
7036 bool si_create_shader_variant(struct si_screen
*sscreen
,
7037 struct ac_llvm_compiler
*compiler
,
7038 struct si_shader
*shader
,
7039 struct pipe_debug_callback
*debug
)
7041 struct si_shader_selector
*sel
= shader
->selector
;
7042 struct si_shader
*mainp
= *si_get_main_shader_part(sel
, &shader
->key
);
7045 /* LS, ES, VS are compiled on demand if the main part hasn't been
7046 * compiled for that stage.
7048 * GS are compiled on demand if the main part hasn't been compiled
7049 * for the chosen NGG-ness.
7051 * Vertex shaders are compiled on demand when a vertex fetch
7052 * workaround must be applied.
7054 if (shader
->is_monolithic
) {
7055 /* Monolithic shader (compiled as a whole, has many variants,
7056 * may take a long time to compile).
7058 r
= si_compile_shader(sscreen
, compiler
, shader
, debug
);
7062 /* The shader consists of several parts:
7064 * - the middle part is the user shader, it has 1 variant only
7065 * and it was compiled during the creation of the shader
7067 * - the prolog part is inserted at the beginning
7068 * - the epilog part is inserted at the end
7070 * The prolog and epilog have many (but simple) variants.
7072 * Starting with gfx9, geometry and tessellation control
7073 * shaders also contain the prolog and user shader parts of
7074 * the previous shader stage.
7080 /* Copy the compiled shader data over. */
7081 shader
->is_binary_shared
= true;
7082 shader
->binary
= mainp
->binary
;
7083 shader
->config
= mainp
->config
;
7084 shader
->info
.num_input_sgprs
= mainp
->info
.num_input_sgprs
;
7085 shader
->info
.num_input_vgprs
= mainp
->info
.num_input_vgprs
;
7086 shader
->info
.face_vgpr_index
= mainp
->info
.face_vgpr_index
;
7087 shader
->info
.ancillary_vgpr_index
= mainp
->info
.ancillary_vgpr_index
;
7088 memcpy(shader
->info
.vs_output_param_offset
,
7089 mainp
->info
.vs_output_param_offset
,
7090 sizeof(mainp
->info
.vs_output_param_offset
));
7091 shader
->info
.uses_instanceid
= mainp
->info
.uses_instanceid
;
7092 shader
->info
.nr_pos_exports
= mainp
->info
.nr_pos_exports
;
7093 shader
->info
.nr_param_exports
= mainp
->info
.nr_param_exports
;
7095 /* Select prologs and/or epilogs. */
7096 switch (sel
->type
) {
7097 case PIPE_SHADER_VERTEX
:
7098 if (!si_shader_select_vs_parts(sscreen
, compiler
, shader
, debug
))
7101 case PIPE_SHADER_TESS_CTRL
:
7102 if (!si_shader_select_tcs_parts(sscreen
, compiler
, shader
, debug
))
7105 case PIPE_SHADER_TESS_EVAL
:
7107 case PIPE_SHADER_GEOMETRY
:
7108 if (!si_shader_select_gs_parts(sscreen
, compiler
, shader
, debug
))
7111 case PIPE_SHADER_FRAGMENT
:
7112 if (!si_shader_select_ps_parts(sscreen
, compiler
, shader
, debug
))
7115 /* Make sure we have at least as many VGPRs as there
7116 * are allocated inputs.
7118 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7119 shader
->info
.num_input_vgprs
);
7124 /* Update SGPR and VGPR counts. */
7125 if (shader
->prolog
) {
7126 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7127 shader
->prolog
->config
.num_sgprs
);
7128 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7129 shader
->prolog
->config
.num_vgprs
);
7131 if (shader
->previous_stage
) {
7132 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7133 shader
->previous_stage
->config
.num_sgprs
);
7134 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7135 shader
->previous_stage
->config
.num_vgprs
);
7136 shader
->config
.spilled_sgprs
=
7137 MAX2(shader
->config
.spilled_sgprs
,
7138 shader
->previous_stage
->config
.spilled_sgprs
);
7139 shader
->config
.spilled_vgprs
=
7140 MAX2(shader
->config
.spilled_vgprs
,
7141 shader
->previous_stage
->config
.spilled_vgprs
);
7142 shader
->info
.private_mem_vgprs
=
7143 MAX2(shader
->info
.private_mem_vgprs
,
7144 shader
->previous_stage
->info
.private_mem_vgprs
);
7145 shader
->config
.scratch_bytes_per_wave
=
7146 MAX2(shader
->config
.scratch_bytes_per_wave
,
7147 shader
->previous_stage
->config
.scratch_bytes_per_wave
);
7148 shader
->info
.uses_instanceid
|=
7149 shader
->previous_stage
->info
.uses_instanceid
;
7151 if (shader
->prolog2
) {
7152 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7153 shader
->prolog2
->config
.num_sgprs
);
7154 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7155 shader
->prolog2
->config
.num_vgprs
);
7157 if (shader
->epilog
) {
7158 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7159 shader
->epilog
->config
.num_sgprs
);
7160 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7161 shader
->epilog
->config
.num_vgprs
);
7163 si_calculate_max_simd_waves(shader
);
7166 if (shader
->key
.as_ngg
) {
7167 assert(!shader
->key
.as_es
&& !shader
->key
.as_ls
);
7168 gfx10_ngg_calculate_subgroup_info(shader
);
7169 } else if (sscreen
->info
.chip_class
>= GFX9
&& sel
->type
== PIPE_SHADER_GEOMETRY
) {
7170 gfx9_get_gs_info(shader
->previous_stage_sel
, sel
, &shader
->gs_info
);
7173 si_fix_resource_usage(sscreen
, shader
);
7174 si_shader_dump(sscreen
, shader
, debug
, stderr
, true);
7177 if (!si_shader_binary_upload(sscreen
, shader
, 0)) {
7178 fprintf(stderr
, "LLVM failed to upload shader\n");
7185 void si_shader_destroy(struct si_shader
*shader
)
7187 if (shader
->scratch_bo
)
7188 si_resource_reference(&shader
->scratch_bo
, NULL
);
7190 si_resource_reference(&shader
->bo
, NULL
);
7192 if (!shader
->is_binary_shared
)
7193 si_shader_binary_clean(&shader
->binary
);
7195 free(shader
->shader_log
);