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radeonsi: kill point size VS output if it's not used by the rasterizer
[mesa.git] / src / gallium / drivers / radeonsi / si_state_shaders.c
1 /*
2 * Copyright 2012 Advanced Micro Devices, Inc.
3 * All Rights Reserved.
4 *
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:
11 *
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
14 * Software.
15 *
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.
23 */
24
25 #include "ac_exp_param.h"
26 #include "ac_shader_util.h"
27 #include "compiler/nir/nir_serialize.h"
28 #include "nir/tgsi_to_nir.h"
29 #include "si_build_pm4.h"
30 #include "sid.h"
31 #include "util/crc32.h"
32 #include "util/disk_cache.h"
33 #include "util/hash_table.h"
34 #include "util/mesa-sha1.h"
35 #include "util/u_async_debug.h"
36 #include "util/u_memory.h"
37 #include "util/u_prim.h"
38 #include "tgsi/tgsi_from_mesa.h"
39
40 /* SHADER_CACHE */
41
42 /**
43 * Return the IR key for the shader cache.
44 */
45 void si_get_ir_cache_key(struct si_shader_selector *sel, bool ngg, bool es,
46 unsigned char ir_sha1_cache_key[20])
47 {
48 struct blob blob = {};
49 unsigned ir_size;
50 void *ir_binary;
51
52 if (sel->nir_binary) {
53 ir_binary = sel->nir_binary;
54 ir_size = sel->nir_size;
55 } else {
56 assert(sel->nir);
57
58 blob_init(&blob);
59 nir_serialize(&blob, sel->nir, true);
60 ir_binary = blob.data;
61 ir_size = blob.size;
62 }
63
64 /* These settings affect the compilation, but they are not derived
65 * from the input shader IR.
66 */
67 unsigned shader_variant_flags = 0;
68
69 if (ngg)
70 shader_variant_flags |= 1 << 0;
71 if (sel->nir)
72 shader_variant_flags |= 1 << 1;
73 if (si_get_wave_size(sel->screen, sel->info.stage, ngg, es, false, false) == 32)
74 shader_variant_flags |= 1 << 2;
75 if (sel->info.stage == MESA_SHADER_FRAGMENT &&
76 /* Derivatives imply helper invocations so check for needs_helper_invocations. */
77 sel->info.base.fs.needs_helper_invocations &&
78 sel->info.base.fs.uses_discard &&
79 sel->screen->debug_flags & DBG(FS_CORRECT_DERIVS_AFTER_KILL))
80 shader_variant_flags |= 1 << 3;
81
82 /* This varies depending on whether compute-based culling is enabled. */
83 shader_variant_flags |= sel->screen->num_vbos_in_user_sgprs << 4;
84
85 struct mesa_sha1 ctx;
86 _mesa_sha1_init(&ctx);
87 _mesa_sha1_update(&ctx, &shader_variant_flags, 4);
88 _mesa_sha1_update(&ctx, ir_binary, ir_size);
89 if (sel->info.stage == MESA_SHADER_VERTEX || sel->info.stage == MESA_SHADER_TESS_EVAL ||
90 sel->info.stage == MESA_SHADER_GEOMETRY)
91 _mesa_sha1_update(&ctx, &sel->so, sizeof(sel->so));
92 _mesa_sha1_final(&ctx, ir_sha1_cache_key);
93
94 if (ir_binary == blob.data)
95 blob_finish(&blob);
96 }
97
98 /** Copy "data" to "ptr" and return the next dword following copied data. */
99 static uint32_t *write_data(uint32_t *ptr, const void *data, unsigned size)
100 {
101 /* data may be NULL if size == 0 */
102 if (size)
103 memcpy(ptr, data, size);
104 ptr += DIV_ROUND_UP(size, 4);
105 return ptr;
106 }
107
108 /** Read data from "ptr". Return the next dword following the data. */
109 static uint32_t *read_data(uint32_t *ptr, void *data, unsigned size)
110 {
111 memcpy(data, ptr, size);
112 ptr += DIV_ROUND_UP(size, 4);
113 return ptr;
114 }
115
116 /**
117 * Write the size as uint followed by the data. Return the next dword
118 * following the copied data.
119 */
120 static uint32_t *write_chunk(uint32_t *ptr, const void *data, unsigned size)
121 {
122 *ptr++ = size;
123 return write_data(ptr, data, size);
124 }
125
126 /**
127 * Read the size as uint followed by the data. Return both via parameters.
128 * Return the next dword following the data.
129 */
130 static uint32_t *read_chunk(uint32_t *ptr, void **data, unsigned *size)
131 {
132 *size = *ptr++;
133 assert(*data == NULL);
134 if (!*size)
135 return ptr;
136 *data = malloc(*size);
137 return read_data(ptr, *data, *size);
138 }
139
140 /**
141 * Return the shader binary in a buffer. The first 4 bytes contain its size
142 * as integer.
143 */
144 static void *si_get_shader_binary(struct si_shader *shader)
145 {
146 /* There is always a size of data followed by the data itself. */
147 unsigned llvm_ir_size =
148 shader->binary.llvm_ir_string ? strlen(shader->binary.llvm_ir_string) + 1 : 0;
149
150 /* Refuse to allocate overly large buffers and guard against integer
151 * overflow. */
152 if (shader->binary.elf_size > UINT_MAX / 4 || llvm_ir_size > UINT_MAX / 4)
153 return NULL;
154
155 unsigned size = 4 + /* total size */
156 4 + /* CRC32 of the data below */
157 align(sizeof(shader->config), 4) + align(sizeof(shader->info), 4) + 4 +
158 align(shader->binary.elf_size, 4) + 4 + align(llvm_ir_size, 4);
159 void *buffer = CALLOC(1, size);
160 uint32_t *ptr = (uint32_t *)buffer;
161
162 if (!buffer)
163 return NULL;
164
165 *ptr++ = size;
166 ptr++; /* CRC32 is calculated at the end. */
167
168 ptr = write_data(ptr, &shader->config, sizeof(shader->config));
169 ptr = write_data(ptr, &shader->info, sizeof(shader->info));
170 ptr = write_chunk(ptr, shader->binary.elf_buffer, shader->binary.elf_size);
171 ptr = write_chunk(ptr, shader->binary.llvm_ir_string, llvm_ir_size);
172 assert((char *)ptr - (char *)buffer == size);
173
174 /* Compute CRC32. */
175 ptr = (uint32_t *)buffer;
176 ptr++;
177 *ptr = util_hash_crc32(ptr + 1, size - 8);
178
179 return buffer;
180 }
181
182 static bool si_load_shader_binary(struct si_shader *shader, void *binary)
183 {
184 uint32_t *ptr = (uint32_t *)binary;
185 uint32_t size = *ptr++;
186 uint32_t crc32 = *ptr++;
187 unsigned chunk_size;
188 unsigned elf_size;
189
190 if (util_hash_crc32(ptr, size - 8) != crc32) {
191 fprintf(stderr, "radeonsi: binary shader has invalid CRC32\n");
192 return false;
193 }
194
195 ptr = read_data(ptr, &shader->config, sizeof(shader->config));
196 ptr = read_data(ptr, &shader->info, sizeof(shader->info));
197 ptr = read_chunk(ptr, (void **)&shader->binary.elf_buffer, &elf_size);
198 shader->binary.elf_size = elf_size;
199 ptr = read_chunk(ptr, (void **)&shader->binary.llvm_ir_string, &chunk_size);
200
201 return true;
202 }
203
204 /**
205 * Insert a shader into the cache. It's assumed the shader is not in the cache.
206 * Use si_shader_cache_load_shader before calling this.
207 */
208 void si_shader_cache_insert_shader(struct si_screen *sscreen, unsigned char ir_sha1_cache_key[20],
209 struct si_shader *shader, bool insert_into_disk_cache)
210 {
211 void *hw_binary;
212 struct hash_entry *entry;
213 uint8_t key[CACHE_KEY_SIZE];
214
215 entry = _mesa_hash_table_search(sscreen->shader_cache, ir_sha1_cache_key);
216 if (entry)
217 return; /* already added */
218
219 hw_binary = si_get_shader_binary(shader);
220 if (!hw_binary)
221 return;
222
223 if (_mesa_hash_table_insert(sscreen->shader_cache, mem_dup(ir_sha1_cache_key, 20), hw_binary) ==
224 NULL) {
225 FREE(hw_binary);
226 return;
227 }
228
229 if (sscreen->disk_shader_cache && insert_into_disk_cache) {
230 disk_cache_compute_key(sscreen->disk_shader_cache, ir_sha1_cache_key, 20, key);
231 disk_cache_put(sscreen->disk_shader_cache, key, hw_binary, *((uint32_t *)hw_binary), NULL);
232 }
233 }
234
235 bool si_shader_cache_load_shader(struct si_screen *sscreen, unsigned char ir_sha1_cache_key[20],
236 struct si_shader *shader)
237 {
238 struct hash_entry *entry = _mesa_hash_table_search(sscreen->shader_cache, ir_sha1_cache_key);
239
240 if (entry) {
241 if (si_load_shader_binary(shader, entry->data)) {
242 p_atomic_inc(&sscreen->num_memory_shader_cache_hits);
243 return true;
244 }
245 }
246 p_atomic_inc(&sscreen->num_memory_shader_cache_misses);
247
248 if (!sscreen->disk_shader_cache)
249 return false;
250
251 unsigned char sha1[CACHE_KEY_SIZE];
252 disk_cache_compute_key(sscreen->disk_shader_cache, ir_sha1_cache_key, 20, sha1);
253
254 size_t binary_size;
255 uint8_t *buffer = disk_cache_get(sscreen->disk_shader_cache, sha1, &binary_size);
256 if (buffer) {
257 if (binary_size >= sizeof(uint32_t) && *((uint32_t *)buffer) == binary_size) {
258 if (si_load_shader_binary(shader, buffer)) {
259 free(buffer);
260 si_shader_cache_insert_shader(sscreen, ir_sha1_cache_key, shader, false);
261 p_atomic_inc(&sscreen->num_disk_shader_cache_hits);
262 return true;
263 }
264 } else {
265 /* Something has gone wrong discard the item from the cache and
266 * rebuild/link from source.
267 */
268 assert(!"Invalid radeonsi shader disk cache item!");
269 disk_cache_remove(sscreen->disk_shader_cache, sha1);
270 }
271 }
272
273 free(buffer);
274 p_atomic_inc(&sscreen->num_disk_shader_cache_misses);
275 return false;
276 }
277
278 static uint32_t si_shader_cache_key_hash(const void *key)
279 {
280 /* Take the first dword of SHA1. */
281 return *(uint32_t *)key;
282 }
283
284 static bool si_shader_cache_key_equals(const void *a, const void *b)
285 {
286 /* Compare SHA1s. */
287 return memcmp(a, b, 20) == 0;
288 }
289
290 static void si_destroy_shader_cache_entry(struct hash_entry *entry)
291 {
292 FREE((void *)entry->key);
293 FREE(entry->data);
294 }
295
296 bool si_init_shader_cache(struct si_screen *sscreen)
297 {
298 (void)simple_mtx_init(&sscreen->shader_cache_mutex, mtx_plain);
299 sscreen->shader_cache =
300 _mesa_hash_table_create(NULL, si_shader_cache_key_hash, si_shader_cache_key_equals);
301
302 return sscreen->shader_cache != NULL;
303 }
304
305 void si_destroy_shader_cache(struct si_screen *sscreen)
306 {
307 if (sscreen->shader_cache)
308 _mesa_hash_table_destroy(sscreen->shader_cache, si_destroy_shader_cache_entry);
309 simple_mtx_destroy(&sscreen->shader_cache_mutex);
310 }
311
312 /* SHADER STATES */
313
314 static void si_set_tesseval_regs(struct si_screen *sscreen, const struct si_shader_selector *tes,
315 struct si_pm4_state *pm4)
316 {
317 const struct si_shader_info *info = &tes->info;
318 unsigned tes_prim_mode = info->base.tess.primitive_mode;
319 unsigned tes_spacing = info->base.tess.spacing;
320 bool tes_vertex_order_cw = !info->base.tess.ccw;
321 bool tes_point_mode = info->base.tess.point_mode;
322 unsigned type, partitioning, topology, distribution_mode;
323
324 switch (tes_prim_mode) {
325 case GL_LINES:
326 type = V_028B6C_TESS_ISOLINE;
327 break;
328 case GL_TRIANGLES:
329 type = V_028B6C_TESS_TRIANGLE;
330 break;
331 case GL_QUADS:
332 type = V_028B6C_TESS_QUAD;
333 break;
334 default:
335 assert(0);
336 return;
337 }
338
339 switch (tes_spacing) {
340 case TESS_SPACING_FRACTIONAL_ODD:
341 partitioning = V_028B6C_PART_FRAC_ODD;
342 break;
343 case TESS_SPACING_FRACTIONAL_EVEN:
344 partitioning = V_028B6C_PART_FRAC_EVEN;
345 break;
346 case TESS_SPACING_EQUAL:
347 partitioning = V_028B6C_PART_INTEGER;
348 break;
349 default:
350 assert(0);
351 return;
352 }
353
354 if (tes_point_mode)
355 topology = V_028B6C_OUTPUT_POINT;
356 else if (tes_prim_mode == GL_LINES)
357 topology = V_028B6C_OUTPUT_LINE;
358 else if (tes_vertex_order_cw)
359 /* for some reason, this must be the other way around */
360 topology = V_028B6C_OUTPUT_TRIANGLE_CCW;
361 else
362 topology = V_028B6C_OUTPUT_TRIANGLE_CW;
363
364 if (sscreen->info.has_distributed_tess) {
365 if (sscreen->info.family == CHIP_FIJI || sscreen->info.family >= CHIP_POLARIS10)
366 distribution_mode = V_028B6C_TRAPEZOIDS;
367 else
368 distribution_mode = V_028B6C_DONUTS;
369 } else
370 distribution_mode = V_028B6C_NO_DIST;
371
372 assert(pm4->shader);
373 pm4->shader->vgt_tf_param = S_028B6C_TYPE(type) | S_028B6C_PARTITIONING(partitioning) |
374 S_028B6C_TOPOLOGY(topology) |
375 S_028B6C_DISTRIBUTION_MODE(distribution_mode);
376 }
377
378 /* Polaris needs different VTX_REUSE_DEPTH settings depending on
379 * whether the "fractional odd" tessellation spacing is used.
380 *
381 * Possible VGT configurations and which state should set the register:
382 *
383 * Reg set in | VGT shader configuration | Value
384 * ------------------------------------------------------
385 * VS as VS | VS | 30
386 * VS as ES | ES -> GS -> VS | 30
387 * TES as VS | LS -> HS -> VS | 14 or 30
388 * TES as ES | LS -> HS -> ES -> GS -> VS | 14 or 30
389 *
390 * If "shader" is NULL, it's assumed it's not LS or GS copy shader.
391 */
392 static void polaris_set_vgt_vertex_reuse(struct si_screen *sscreen, struct si_shader_selector *sel,
393 struct si_shader *shader, struct si_pm4_state *pm4)
394 {
395 if (sscreen->info.family < CHIP_POLARIS10 || sscreen->info.chip_class >= GFX10)
396 return;
397
398 /* VS as VS, or VS as ES: */
399 if ((sel->info.stage == MESA_SHADER_VERTEX &&
400 (!shader || (!shader->key.as_ls && !shader->is_gs_copy_shader))) ||
401 /* TES as VS, or TES as ES: */
402 sel->info.stage == MESA_SHADER_TESS_EVAL) {
403 unsigned vtx_reuse_depth = 30;
404
405 if (sel->info.stage == MESA_SHADER_TESS_EVAL &&
406 sel->info.base.tess.spacing == TESS_SPACING_FRACTIONAL_ODD)
407 vtx_reuse_depth = 14;
408
409 assert(pm4->shader);
410 pm4->shader->vgt_vertex_reuse_block_cntl = vtx_reuse_depth;
411 }
412 }
413
414 static struct si_pm4_state *si_get_shader_pm4_state(struct si_shader *shader)
415 {
416 if (shader->pm4)
417 si_pm4_clear_state(shader->pm4);
418 else
419 shader->pm4 = CALLOC_STRUCT(si_pm4_state);
420
421 if (shader->pm4) {
422 shader->pm4->shader = shader;
423 return shader->pm4;
424 } else {
425 fprintf(stderr, "radeonsi: Failed to create pm4 state.\n");
426 return NULL;
427 }
428 }
429
430 static unsigned si_get_num_vs_user_sgprs(struct si_shader *shader,
431 unsigned num_always_on_user_sgprs)
432 {
433 struct si_shader_selector *vs =
434 shader->previous_stage_sel ? shader->previous_stage_sel : shader->selector;
435 unsigned num_vbos_in_user_sgprs = vs->num_vbos_in_user_sgprs;
436
437 /* 1 SGPR is reserved for the vertex buffer pointer. */
438 assert(num_always_on_user_sgprs <= SI_SGPR_VS_VB_DESCRIPTOR_FIRST - 1);
439
440 if (num_vbos_in_user_sgprs)
441 return SI_SGPR_VS_VB_DESCRIPTOR_FIRST + num_vbos_in_user_sgprs * 4;
442
443 /* Add the pointer to VBO descriptors. */
444 return num_always_on_user_sgprs + 1;
445 }
446
447 /* Return VGPR_COMP_CNT for the API vertex shader. This can be hw LS, LSHS, ES, ESGS, VS. */
448 static unsigned si_get_vs_vgpr_comp_cnt(struct si_screen *sscreen, struct si_shader *shader,
449 bool legacy_vs_prim_id)
450 {
451 assert(shader->selector->info.stage == MESA_SHADER_VERTEX ||
452 (shader->previous_stage_sel && shader->previous_stage_sel->info.stage == MESA_SHADER_VERTEX));
453
454 /* GFX6-9 LS (VertexID, RelAutoindex, InstanceID / StepRate0(==1), ...).
455 * GFX6-9 ES,VS (VertexID, InstanceID / StepRate0(==1), VSPrimID, ...)
456 * GFX10 LS (VertexID, RelAutoindex, UserVGPR1, InstanceID).
457 * GFX10 ES,VS (VertexID, UserVGPR0, UserVGPR1 or VSPrimID, UserVGPR2 or
458 * InstanceID)
459 */
460 bool is_ls = shader->selector->info.stage == MESA_SHADER_TESS_CTRL || shader->key.as_ls;
461
462 if (sscreen->info.chip_class >= GFX10 && shader->info.uses_instanceid)
463 return 3;
464 else if ((is_ls && shader->info.uses_instanceid) || legacy_vs_prim_id)
465 return 2;
466 else if (is_ls || shader->info.uses_instanceid)
467 return 1;
468 else
469 return 0;
470 }
471
472 static void si_shader_ls(struct si_screen *sscreen, struct si_shader *shader)
473 {
474 struct si_pm4_state *pm4;
475 uint64_t va;
476
477 assert(sscreen->info.chip_class <= GFX8);
478
479 pm4 = si_get_shader_pm4_state(shader);
480 if (!pm4)
481 return;
482
483 va = shader->bo->gpu_address;
484 si_pm4_set_reg(pm4, R_00B520_SPI_SHADER_PGM_LO_LS, va >> 8);
485 si_pm4_set_reg(pm4, R_00B524_SPI_SHADER_PGM_HI_LS, S_00B524_MEM_BASE(va >> 40));
486
487 shader->config.rsrc1 = S_00B528_VGPRS((shader->config.num_vgprs - 1) / 4) |
488 S_00B528_SGPRS((shader->config.num_sgprs - 1) / 8) |
489 S_00B528_VGPR_COMP_CNT(si_get_vs_vgpr_comp_cnt(sscreen, shader, false)) |
490 S_00B528_DX10_CLAMP(1) | S_00B528_FLOAT_MODE(shader->config.float_mode);
491 shader->config.rsrc2 =
492 S_00B52C_USER_SGPR(si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR)) |
493 S_00B52C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
494 }
495
496 static void si_shader_hs(struct si_screen *sscreen, struct si_shader *shader)
497 {
498 struct si_pm4_state *pm4;
499 uint64_t va;
500
501 pm4 = si_get_shader_pm4_state(shader);
502 if (!pm4)
503 return;
504
505 va = shader->bo->gpu_address;
506
507 if (sscreen->info.chip_class >= GFX9) {
508 if (sscreen->info.chip_class >= GFX10) {
509 si_pm4_set_reg(pm4, R_00B520_SPI_SHADER_PGM_LO_LS, va >> 8);
510 si_pm4_set_reg(pm4, R_00B524_SPI_SHADER_PGM_HI_LS, S_00B524_MEM_BASE(va >> 40));
511 } else {
512 si_pm4_set_reg(pm4, R_00B410_SPI_SHADER_PGM_LO_LS, va >> 8);
513 si_pm4_set_reg(pm4, R_00B414_SPI_SHADER_PGM_HI_LS, S_00B414_MEM_BASE(va >> 40));
514 }
515
516 unsigned num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_TCS_NUM_USER_SGPR);
517
518 shader->config.rsrc2 = S_00B42C_USER_SGPR(num_user_sgprs) |
519 S_00B42C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
520
521 if (sscreen->info.chip_class >= GFX10)
522 shader->config.rsrc2 |= S_00B42C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
523 else
524 shader->config.rsrc2 |= S_00B42C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
525 } else {
526 si_pm4_set_reg(pm4, R_00B420_SPI_SHADER_PGM_LO_HS, va >> 8);
527 si_pm4_set_reg(pm4, R_00B424_SPI_SHADER_PGM_HI_HS, S_00B424_MEM_BASE(va >> 40));
528
529 shader->config.rsrc2 = S_00B42C_USER_SGPR(GFX6_TCS_NUM_USER_SGPR) | S_00B42C_OC_LDS_EN(1) |
530 S_00B42C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
531 }
532
533 si_pm4_set_reg(
534 pm4, R_00B428_SPI_SHADER_PGM_RSRC1_HS,
535 S_00B428_VGPRS((shader->config.num_vgprs - 1) / (sscreen->ge_wave_size == 32 ? 8 : 4)) |
536 (sscreen->info.chip_class <= GFX9 ? S_00B428_SGPRS((shader->config.num_sgprs - 1) / 8)
537 : 0) |
538 S_00B428_DX10_CLAMP(1) | S_00B428_MEM_ORDERED(sscreen->info.chip_class >= GFX10) |
539 S_00B428_WGP_MODE(sscreen->info.chip_class >= GFX10) |
540 S_00B428_FLOAT_MODE(shader->config.float_mode) |
541 S_00B428_LS_VGPR_COMP_CNT(sscreen->info.chip_class >= GFX9
542 ? si_get_vs_vgpr_comp_cnt(sscreen, shader, false)
543 : 0));
544
545 if (sscreen->info.chip_class <= GFX8) {
546 si_pm4_set_reg(pm4, R_00B42C_SPI_SHADER_PGM_RSRC2_HS, shader->config.rsrc2);
547 }
548 }
549
550 static void si_emit_shader_es(struct si_context *sctx)
551 {
552 struct si_shader *shader = sctx->queued.named.es->shader;
553 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
554
555 if (!shader)
556 return;
557
558 radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
559 SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
560 shader->selector->esgs_itemsize / 4);
561
562 if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL)
563 radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
564 shader->vgt_tf_param);
565
566 if (shader->vgt_vertex_reuse_block_cntl)
567 radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
568 SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
569 shader->vgt_vertex_reuse_block_cntl);
570
571 if (initial_cdw != sctx->gfx_cs->current.cdw)
572 sctx->context_roll = true;
573 }
574
575 static void si_shader_es(struct si_screen *sscreen, struct si_shader *shader)
576 {
577 struct si_pm4_state *pm4;
578 unsigned num_user_sgprs;
579 unsigned vgpr_comp_cnt;
580 uint64_t va;
581 unsigned oc_lds_en;
582
583 assert(sscreen->info.chip_class <= GFX8);
584
585 pm4 = si_get_shader_pm4_state(shader);
586 if (!pm4)
587 return;
588
589 pm4->atom.emit = si_emit_shader_es;
590 va = shader->bo->gpu_address;
591
592 if (shader->selector->info.stage == MESA_SHADER_VERTEX) {
593 vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
594 num_user_sgprs = si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR);
595 } else if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL) {
596 vgpr_comp_cnt = shader->selector->info.uses_primid ? 3 : 2;
597 num_user_sgprs = SI_TES_NUM_USER_SGPR;
598 } else
599 unreachable("invalid shader selector type");
600
601 oc_lds_en = shader->selector->info.stage == MESA_SHADER_TESS_EVAL ? 1 : 0;
602
603 si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
604 si_pm4_set_reg(pm4, R_00B324_SPI_SHADER_PGM_HI_ES, S_00B324_MEM_BASE(va >> 40));
605 si_pm4_set_reg(pm4, R_00B328_SPI_SHADER_PGM_RSRC1_ES,
606 S_00B328_VGPRS((shader->config.num_vgprs - 1) / 4) |
607 S_00B328_SGPRS((shader->config.num_sgprs - 1) / 8) |
608 S_00B328_VGPR_COMP_CNT(vgpr_comp_cnt) | S_00B328_DX10_CLAMP(1) |
609 S_00B328_FLOAT_MODE(shader->config.float_mode));
610 si_pm4_set_reg(pm4, R_00B32C_SPI_SHADER_PGM_RSRC2_ES,
611 S_00B32C_USER_SGPR(num_user_sgprs) | S_00B32C_OC_LDS_EN(oc_lds_en) |
612 S_00B32C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
613
614 if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL)
615 si_set_tesseval_regs(sscreen, shader->selector, pm4);
616
617 polaris_set_vgt_vertex_reuse(sscreen, shader->selector, shader, pm4);
618 }
619
620 void gfx9_get_gs_info(struct si_shader_selector *es, struct si_shader_selector *gs,
621 struct gfx9_gs_info *out)
622 {
623 unsigned gs_num_invocations = MAX2(gs->info.base.gs.invocations, 1);
624 unsigned input_prim = gs->info.base.gs.input_primitive;
625 bool uses_adjacency =
626 input_prim >= PIPE_PRIM_LINES_ADJACENCY && input_prim <= PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY;
627
628 /* All these are in dwords: */
629 /* We can't allow using the whole LDS, because GS waves compete with
630 * other shader stages for LDS space. */
631 const unsigned max_lds_size = 8 * 1024;
632 const unsigned esgs_itemsize = es->esgs_itemsize / 4;
633 unsigned esgs_lds_size;
634
635 /* All these are per subgroup: */
636 const unsigned max_out_prims = 32 * 1024;
637 const unsigned max_es_verts = 255;
638 const unsigned ideal_gs_prims = 64;
639 unsigned max_gs_prims, gs_prims;
640 unsigned min_es_verts, es_verts, worst_case_es_verts;
641
642 if (uses_adjacency || gs_num_invocations > 1)
643 max_gs_prims = 127 / gs_num_invocations;
644 else
645 max_gs_prims = 255;
646
647 /* MAX_PRIMS_PER_SUBGROUP = gs_prims * max_vert_out * gs_invocations.
648 * Make sure we don't go over the maximum value.
649 */
650 if (gs->info.base.gs.vertices_out > 0) {
651 max_gs_prims =
652 MIN2(max_gs_prims, max_out_prims / (gs->info.base.gs.vertices_out * gs_num_invocations));
653 }
654 assert(max_gs_prims > 0);
655
656 /* If the primitive has adjacency, halve the number of vertices
657 * that will be reused in multiple primitives.
658 */
659 min_es_verts = gs->gs_input_verts_per_prim / (uses_adjacency ? 2 : 1);
660
661 gs_prims = MIN2(ideal_gs_prims, max_gs_prims);
662 worst_case_es_verts = MIN2(min_es_verts * gs_prims, max_es_verts);
663
664 /* Compute ESGS LDS size based on the worst case number of ES vertices
665 * needed to create the target number of GS prims per subgroup.
666 */
667 esgs_lds_size = esgs_itemsize * worst_case_es_verts;
668
669 /* If total LDS usage is too big, refactor partitions based on ratio
670 * of ESGS item sizes.
671 */
672 if (esgs_lds_size > max_lds_size) {
673 /* Our target GS Prims Per Subgroup was too large. Calculate
674 * the maximum number of GS Prims Per Subgroup that will fit
675 * into LDS, capped by the maximum that the hardware can support.
676 */
677 gs_prims = MIN2((max_lds_size / (esgs_itemsize * min_es_verts)), max_gs_prims);
678 assert(gs_prims > 0);
679 worst_case_es_verts = MIN2(min_es_verts * gs_prims, max_es_verts);
680
681 esgs_lds_size = esgs_itemsize * worst_case_es_verts;
682 assert(esgs_lds_size <= max_lds_size);
683 }
684
685 /* Now calculate remaining ESGS information. */
686 if (esgs_lds_size)
687 es_verts = MIN2(esgs_lds_size / esgs_itemsize, max_es_verts);
688 else
689 es_verts = max_es_verts;
690
691 /* Vertices for adjacency primitives are not always reused, so restore
692 * it for ES_VERTS_PER_SUBGRP.
693 */
694 min_es_verts = gs->gs_input_verts_per_prim;
695
696 /* For normal primitives, the VGT only checks if they are past the ES
697 * verts per subgroup after allocating a full GS primitive and if they
698 * are, kick off a new subgroup. But if those additional ES verts are
699 * unique (e.g. not reused) we need to make sure there is enough LDS
700 * space to account for those ES verts beyond ES_VERTS_PER_SUBGRP.
701 */
702 es_verts -= min_es_verts - 1;
703
704 out->es_verts_per_subgroup = es_verts;
705 out->gs_prims_per_subgroup = gs_prims;
706 out->gs_inst_prims_in_subgroup = gs_prims * gs_num_invocations;
707 out->max_prims_per_subgroup = out->gs_inst_prims_in_subgroup * gs->info.base.gs.vertices_out;
708 out->esgs_ring_size = esgs_lds_size;
709
710 assert(out->max_prims_per_subgroup <= max_out_prims);
711 }
712
713 static void si_emit_shader_gs(struct si_context *sctx)
714 {
715 struct si_shader *shader = sctx->queued.named.gs->shader;
716 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
717
718 if (!shader)
719 return;
720
721 /* R_028A60_VGT_GSVS_RING_OFFSET_1, R_028A64_VGT_GSVS_RING_OFFSET_2
722 * R_028A68_VGT_GSVS_RING_OFFSET_3 */
723 radeon_opt_set_context_reg3(
724 sctx, R_028A60_VGT_GSVS_RING_OFFSET_1, SI_TRACKED_VGT_GSVS_RING_OFFSET_1,
725 shader->ctx_reg.gs.vgt_gsvs_ring_offset_1, shader->ctx_reg.gs.vgt_gsvs_ring_offset_2,
726 shader->ctx_reg.gs.vgt_gsvs_ring_offset_3);
727
728 /* R_028AB0_VGT_GSVS_RING_ITEMSIZE */
729 radeon_opt_set_context_reg(sctx, R_028AB0_VGT_GSVS_RING_ITEMSIZE,
730 SI_TRACKED_VGT_GSVS_RING_ITEMSIZE,
731 shader->ctx_reg.gs.vgt_gsvs_ring_itemsize);
732
733 /* R_028B38_VGT_GS_MAX_VERT_OUT */
734 radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
735 shader->ctx_reg.gs.vgt_gs_max_vert_out);
736
737 /* R_028B5C_VGT_GS_VERT_ITEMSIZE, R_028B60_VGT_GS_VERT_ITEMSIZE_1
738 * R_028B64_VGT_GS_VERT_ITEMSIZE_2, R_028B68_VGT_GS_VERT_ITEMSIZE_3 */
739 radeon_opt_set_context_reg4(
740 sctx, R_028B5C_VGT_GS_VERT_ITEMSIZE, SI_TRACKED_VGT_GS_VERT_ITEMSIZE,
741 shader->ctx_reg.gs.vgt_gs_vert_itemsize, shader->ctx_reg.gs.vgt_gs_vert_itemsize_1,
742 shader->ctx_reg.gs.vgt_gs_vert_itemsize_2, shader->ctx_reg.gs.vgt_gs_vert_itemsize_3);
743
744 /* R_028B90_VGT_GS_INSTANCE_CNT */
745 radeon_opt_set_context_reg(sctx, R_028B90_VGT_GS_INSTANCE_CNT, SI_TRACKED_VGT_GS_INSTANCE_CNT,
746 shader->ctx_reg.gs.vgt_gs_instance_cnt);
747
748 if (sctx->chip_class >= GFX9) {
749 /* R_028A44_VGT_GS_ONCHIP_CNTL */
750 radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL, SI_TRACKED_VGT_GS_ONCHIP_CNTL,
751 shader->ctx_reg.gs.vgt_gs_onchip_cntl);
752 /* R_028A94_VGT_GS_MAX_PRIMS_PER_SUBGROUP */
753 radeon_opt_set_context_reg(sctx, R_028A94_VGT_GS_MAX_PRIMS_PER_SUBGROUP,
754 SI_TRACKED_VGT_GS_MAX_PRIMS_PER_SUBGROUP,
755 shader->ctx_reg.gs.vgt_gs_max_prims_per_subgroup);
756 /* R_028AAC_VGT_ESGS_RING_ITEMSIZE */
757 radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
758 SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
759 shader->ctx_reg.gs.vgt_esgs_ring_itemsize);
760
761 if (shader->key.part.gs.es->info.stage == MESA_SHADER_TESS_EVAL)
762 radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
763 shader->vgt_tf_param);
764 if (shader->vgt_vertex_reuse_block_cntl)
765 radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
766 SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
767 shader->vgt_vertex_reuse_block_cntl);
768 }
769
770 if (initial_cdw != sctx->gfx_cs->current.cdw)
771 sctx->context_roll = true;
772 }
773
774 static void si_shader_gs(struct si_screen *sscreen, struct si_shader *shader)
775 {
776 struct si_shader_selector *sel = shader->selector;
777 const ubyte *num_components = sel->info.num_stream_output_components;
778 unsigned gs_num_invocations = sel->info.base.gs.invocations;
779 struct si_pm4_state *pm4;
780 uint64_t va;
781 unsigned max_stream = util_last_bit(sel->info.base.gs.active_stream_mask);
782 unsigned offset;
783
784 pm4 = si_get_shader_pm4_state(shader);
785 if (!pm4)
786 return;
787
788 pm4->atom.emit = si_emit_shader_gs;
789
790 offset = num_components[0] * sel->info.base.gs.vertices_out;
791 shader->ctx_reg.gs.vgt_gsvs_ring_offset_1 = offset;
792
793 if (max_stream >= 2)
794 offset += num_components[1] * sel->info.base.gs.vertices_out;
795 shader->ctx_reg.gs.vgt_gsvs_ring_offset_2 = offset;
796
797 if (max_stream >= 3)
798 offset += num_components[2] * sel->info.base.gs.vertices_out;
799 shader->ctx_reg.gs.vgt_gsvs_ring_offset_3 = offset;
800
801 if (max_stream >= 4)
802 offset += num_components[3] * sel->info.base.gs.vertices_out;
803 shader->ctx_reg.gs.vgt_gsvs_ring_itemsize = offset;
804
805 /* The GSVS_RING_ITEMSIZE register takes 15 bits */
806 assert(offset < (1 << 15));
807
808 shader->ctx_reg.gs.vgt_gs_max_vert_out = sel->info.base.gs.vertices_out;
809
810 shader->ctx_reg.gs.vgt_gs_vert_itemsize = num_components[0];
811 shader->ctx_reg.gs.vgt_gs_vert_itemsize_1 = (max_stream >= 2) ? num_components[1] : 0;
812 shader->ctx_reg.gs.vgt_gs_vert_itemsize_2 = (max_stream >= 3) ? num_components[2] : 0;
813 shader->ctx_reg.gs.vgt_gs_vert_itemsize_3 = (max_stream >= 4) ? num_components[3] : 0;
814
815 shader->ctx_reg.gs.vgt_gs_instance_cnt =
816 S_028B90_CNT(MIN2(gs_num_invocations, 127)) | S_028B90_ENABLE(gs_num_invocations > 0);
817
818 va = shader->bo->gpu_address;
819
820 if (sscreen->info.chip_class >= GFX9) {
821 unsigned input_prim = sel->info.base.gs.input_primitive;
822 gl_shader_stage es_stage = shader->key.part.gs.es->info.stage;
823 unsigned es_vgpr_comp_cnt, gs_vgpr_comp_cnt;
824
825 if (es_stage == MESA_SHADER_VERTEX) {
826 es_vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
827 } else if (es_stage == MESA_SHADER_TESS_EVAL)
828 es_vgpr_comp_cnt = shader->key.part.gs.es->info.uses_primid ? 3 : 2;
829 else
830 unreachable("invalid shader selector type");
831
832 /* If offsets 4, 5 are used, GS_VGPR_COMP_CNT is ignored and
833 * VGPR[0:4] are always loaded.
834 */
835 if (sel->info.uses_invocationid)
836 gs_vgpr_comp_cnt = 3; /* VGPR3 contains InvocationID. */
837 else if (sel->info.uses_primid)
838 gs_vgpr_comp_cnt = 2; /* VGPR2 contains PrimitiveID. */
839 else if (input_prim >= PIPE_PRIM_TRIANGLES)
840 gs_vgpr_comp_cnt = 1; /* VGPR1 contains offsets 2, 3 */
841 else
842 gs_vgpr_comp_cnt = 0; /* VGPR0 contains offsets 0, 1 */
843
844 unsigned num_user_sgprs;
845 if (es_stage == MESA_SHADER_VERTEX)
846 num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_VSGS_NUM_USER_SGPR);
847 else
848 num_user_sgprs = GFX9_TESGS_NUM_USER_SGPR;
849
850 if (sscreen->info.chip_class >= GFX10) {
851 si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
852 si_pm4_set_reg(pm4, R_00B324_SPI_SHADER_PGM_HI_ES, S_00B324_MEM_BASE(va >> 40));
853 } else {
854 si_pm4_set_reg(pm4, R_00B210_SPI_SHADER_PGM_LO_ES, va >> 8);
855 si_pm4_set_reg(pm4, R_00B214_SPI_SHADER_PGM_HI_ES, S_00B214_MEM_BASE(va >> 40));
856 }
857
858 uint32_t rsrc1 = S_00B228_VGPRS((shader->config.num_vgprs - 1) / 4) | S_00B228_DX10_CLAMP(1) |
859 S_00B228_MEM_ORDERED(sscreen->info.chip_class >= GFX10) |
860 S_00B228_WGP_MODE(sscreen->info.chip_class >= GFX10) |
861 S_00B228_FLOAT_MODE(shader->config.float_mode) |
862 S_00B228_GS_VGPR_COMP_CNT(gs_vgpr_comp_cnt);
863 uint32_t rsrc2 = S_00B22C_USER_SGPR(num_user_sgprs) |
864 S_00B22C_ES_VGPR_COMP_CNT(es_vgpr_comp_cnt) |
865 S_00B22C_OC_LDS_EN(es_stage == MESA_SHADER_TESS_EVAL) |
866 S_00B22C_LDS_SIZE(shader->config.lds_size) |
867 S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
868
869 if (sscreen->info.chip_class >= GFX10) {
870 rsrc2 |= S_00B22C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
871 } else {
872 rsrc1 |= S_00B228_SGPRS((shader->config.num_sgprs - 1) / 8);
873 rsrc2 |= S_00B22C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
874 }
875
876 si_pm4_set_reg(pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS, rsrc1);
877 si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS, rsrc2);
878
879 if (sscreen->info.chip_class >= GFX10) {
880 si_pm4_set_reg(pm4, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
881 S_00B204_CU_EN(0xffff) | S_00B204_SPI_SHADER_LATE_ALLOC_GS_GFX10(0));
882 }
883
884 shader->ctx_reg.gs.vgt_gs_onchip_cntl =
885 S_028A44_ES_VERTS_PER_SUBGRP(shader->gs_info.es_verts_per_subgroup) |
886 S_028A44_GS_PRIMS_PER_SUBGRP(shader->gs_info.gs_prims_per_subgroup) |
887 S_028A44_GS_INST_PRIMS_IN_SUBGRP(shader->gs_info.gs_inst_prims_in_subgroup);
888 shader->ctx_reg.gs.vgt_gs_max_prims_per_subgroup =
889 S_028A94_MAX_PRIMS_PER_SUBGROUP(shader->gs_info.max_prims_per_subgroup);
890 shader->ctx_reg.gs.vgt_esgs_ring_itemsize = shader->key.part.gs.es->esgs_itemsize / 4;
891
892 if (es_stage == MESA_SHADER_TESS_EVAL)
893 si_set_tesseval_regs(sscreen, shader->key.part.gs.es, pm4);
894
895 polaris_set_vgt_vertex_reuse(sscreen, shader->key.part.gs.es, NULL, pm4);
896 } else {
897 si_pm4_set_reg(pm4, R_00B220_SPI_SHADER_PGM_LO_GS, va >> 8);
898 si_pm4_set_reg(pm4, R_00B224_SPI_SHADER_PGM_HI_GS, S_00B224_MEM_BASE(va >> 40));
899
900 si_pm4_set_reg(pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS,
901 S_00B228_VGPRS((shader->config.num_vgprs - 1) / 4) |
902 S_00B228_SGPRS((shader->config.num_sgprs - 1) / 8) |
903 S_00B228_DX10_CLAMP(1) | S_00B228_FLOAT_MODE(shader->config.float_mode));
904 si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS,
905 S_00B22C_USER_SGPR(GFX6_GS_NUM_USER_SGPR) |
906 S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
907 }
908 }
909
910 static void gfx10_emit_ge_pc_alloc(struct si_context *sctx, unsigned value)
911 {
912 enum si_tracked_reg reg = SI_TRACKED_GE_PC_ALLOC;
913
914 if (((sctx->tracked_regs.reg_saved >> reg) & 0x1) != 0x1 ||
915 sctx->tracked_regs.reg_value[reg] != value) {
916 struct radeon_cmdbuf *cs = sctx->gfx_cs;
917
918 if (sctx->chip_class == GFX10) {
919 /* SQ_NON_EVENT must be emitted before GE_PC_ALLOC is written. */
920 radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
921 radeon_emit(cs, EVENT_TYPE(V_028A90_SQ_NON_EVENT) | EVENT_INDEX(0));
922 }
923
924 radeon_set_uconfig_reg(cs, R_030980_GE_PC_ALLOC, value);
925
926 sctx->tracked_regs.reg_saved |= 0x1ull << reg;
927 sctx->tracked_regs.reg_value[reg] = value;
928 }
929 }
930
931 /* Common tail code for NGG primitive shaders. */
932 static void gfx10_emit_shader_ngg_tail(struct si_context *sctx, struct si_shader *shader,
933 unsigned initial_cdw)
934 {
935 radeon_opt_set_context_reg(sctx, R_0287FC_GE_MAX_OUTPUT_PER_SUBGROUP,
936 SI_TRACKED_GE_MAX_OUTPUT_PER_SUBGROUP,
937 shader->ctx_reg.ngg.ge_max_output_per_subgroup);
938 radeon_opt_set_context_reg(sctx, R_028B4C_GE_NGG_SUBGRP_CNTL, SI_TRACKED_GE_NGG_SUBGRP_CNTL,
939 shader->ctx_reg.ngg.ge_ngg_subgrp_cntl);
940 radeon_opt_set_context_reg(sctx, R_028A84_VGT_PRIMITIVEID_EN, SI_TRACKED_VGT_PRIMITIVEID_EN,
941 shader->ctx_reg.ngg.vgt_primitiveid_en);
942 radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL, SI_TRACKED_VGT_GS_ONCHIP_CNTL,
943 shader->ctx_reg.ngg.vgt_gs_onchip_cntl);
944 radeon_opt_set_context_reg(sctx, R_028B90_VGT_GS_INSTANCE_CNT, SI_TRACKED_VGT_GS_INSTANCE_CNT,
945 shader->ctx_reg.ngg.vgt_gs_instance_cnt);
946 radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
947 SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
948 shader->ctx_reg.ngg.vgt_esgs_ring_itemsize);
949 radeon_opt_set_context_reg(sctx, R_0286C4_SPI_VS_OUT_CONFIG, SI_TRACKED_SPI_VS_OUT_CONFIG,
950 shader->ctx_reg.ngg.spi_vs_out_config);
951 radeon_opt_set_context_reg2(
952 sctx, R_028708_SPI_SHADER_IDX_FORMAT, SI_TRACKED_SPI_SHADER_IDX_FORMAT,
953 shader->ctx_reg.ngg.spi_shader_idx_format, shader->ctx_reg.ngg.spi_shader_pos_format);
954 radeon_opt_set_context_reg(sctx, R_028818_PA_CL_VTE_CNTL, SI_TRACKED_PA_CL_VTE_CNTL,
955 shader->ctx_reg.ngg.pa_cl_vte_cntl);
956 radeon_opt_set_context_reg(sctx, R_028838_PA_CL_NGG_CNTL, SI_TRACKED_PA_CL_NGG_CNTL,
957 shader->ctx_reg.ngg.pa_cl_ngg_cntl);
958
959 radeon_opt_set_context_reg_rmw(sctx, R_02881C_PA_CL_VS_OUT_CNTL,
960 SI_TRACKED_PA_CL_VS_OUT_CNTL__VS, shader->pa_cl_vs_out_cntl,
961 SI_TRACKED_PA_CL_VS_OUT_CNTL__VS_MASK);
962
963 if (initial_cdw != sctx->gfx_cs->current.cdw)
964 sctx->context_roll = true;
965
966 /* GE_PC_ALLOC is not a context register, so it doesn't cause a context roll. */
967 gfx10_emit_ge_pc_alloc(sctx, shader->ctx_reg.ngg.ge_pc_alloc);
968 }
969
970 static void gfx10_emit_shader_ngg_notess_nogs(struct si_context *sctx)
971 {
972 struct si_shader *shader = sctx->queued.named.gs->shader;
973 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
974
975 if (!shader)
976 return;
977
978 gfx10_emit_shader_ngg_tail(sctx, shader, initial_cdw);
979 }
980
981 static void gfx10_emit_shader_ngg_tess_nogs(struct si_context *sctx)
982 {
983 struct si_shader *shader = sctx->queued.named.gs->shader;
984 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
985
986 if (!shader)
987 return;
988
989 radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
990 shader->vgt_tf_param);
991
992 gfx10_emit_shader_ngg_tail(sctx, shader, initial_cdw);
993 }
994
995 static void gfx10_emit_shader_ngg_notess_gs(struct si_context *sctx)
996 {
997 struct si_shader *shader = sctx->queued.named.gs->shader;
998 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
999
1000 if (!shader)
1001 return;
1002
1003 radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
1004 shader->ctx_reg.ngg.vgt_gs_max_vert_out);
1005
1006 gfx10_emit_shader_ngg_tail(sctx, shader, initial_cdw);
1007 }
1008
1009 static void gfx10_emit_shader_ngg_tess_gs(struct si_context *sctx)
1010 {
1011 struct si_shader *shader = sctx->queued.named.gs->shader;
1012 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
1013
1014 if (!shader)
1015 return;
1016
1017 radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
1018 shader->ctx_reg.ngg.vgt_gs_max_vert_out);
1019 radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
1020 shader->vgt_tf_param);
1021
1022 gfx10_emit_shader_ngg_tail(sctx, shader, initial_cdw);
1023 }
1024
1025 unsigned si_get_input_prim(const struct si_shader_selector *gs)
1026 {
1027 if (gs->info.stage == MESA_SHADER_GEOMETRY)
1028 return gs->info.base.gs.input_primitive;
1029
1030 if (gs->info.stage == MESA_SHADER_TESS_EVAL) {
1031 if (gs->info.base.tess.point_mode)
1032 return PIPE_PRIM_POINTS;
1033 if (gs->info.base.tess.primitive_mode == GL_LINES)
1034 return PIPE_PRIM_LINES;
1035 return PIPE_PRIM_TRIANGLES;
1036 }
1037
1038 /* TODO: Set this correctly if the primitive type is set in the shader key. */
1039 return PIPE_PRIM_TRIANGLES; /* worst case for all callers */
1040 }
1041
1042 static unsigned si_get_vs_out_cntl(const struct si_shader_selector *sel,
1043 const struct si_shader *shader, bool ngg)
1044 {
1045 bool writes_psize = sel->info.writes_psize;
1046
1047 if (shader)
1048 writes_psize &= !shader->key.opt.kill_pointsize;
1049
1050 bool misc_vec_ena = writes_psize || (sel->info.writes_edgeflag && !ngg) ||
1051 sel->info.writes_layer || sel->info.writes_viewport_index;
1052 return S_02881C_USE_VTX_POINT_SIZE(writes_psize) |
1053 S_02881C_USE_VTX_EDGE_FLAG(sel->info.writes_edgeflag && !ngg) |
1054 S_02881C_USE_VTX_RENDER_TARGET_INDX(sel->info.writes_layer) |
1055 S_02881C_USE_VTX_VIEWPORT_INDX(sel->info.writes_viewport_index) |
1056 S_02881C_VS_OUT_MISC_VEC_ENA(misc_vec_ena) |
1057 S_02881C_VS_OUT_MISC_SIDE_BUS_ENA(misc_vec_ena);
1058 }
1059
1060 /**
1061 * Prepare the PM4 image for \p shader, which will run as a merged ESGS shader
1062 * in NGG mode.
1063 */
1064 static void gfx10_shader_ngg(struct si_screen *sscreen, struct si_shader *shader)
1065 {
1066 const struct si_shader_selector *gs_sel = shader->selector;
1067 const struct si_shader_info *gs_info = &gs_sel->info;
1068 const gl_shader_stage gs_stage = shader->selector->info.stage;
1069 const struct si_shader_selector *es_sel =
1070 shader->previous_stage_sel ? shader->previous_stage_sel : shader->selector;
1071 const struct si_shader_info *es_info = &es_sel->info;
1072 const gl_shader_stage es_stage = es_sel->info.stage;
1073 unsigned num_user_sgprs;
1074 unsigned nparams, es_vgpr_comp_cnt, gs_vgpr_comp_cnt;
1075 uint64_t va;
1076 bool window_space = gs_info->stage == MESA_SHADER_VERTEX ?
1077 gs_info->base.vs.window_space_position : 0;
1078 bool es_enable_prim_id = shader->key.mono.u.vs_export_prim_id || es_info->uses_primid;
1079 unsigned gs_num_invocations = MAX2(gs_sel->info.base.gs.invocations, 1);
1080 unsigned input_prim = si_get_input_prim(gs_sel);
1081 bool break_wave_at_eoi = false;
1082 struct si_pm4_state *pm4 = si_get_shader_pm4_state(shader);
1083 if (!pm4)
1084 return;
1085
1086 if (es_stage == MESA_SHADER_TESS_EVAL) {
1087 pm4->atom.emit = gs_stage == MESA_SHADER_GEOMETRY ? gfx10_emit_shader_ngg_tess_gs
1088 : gfx10_emit_shader_ngg_tess_nogs;
1089 } else {
1090 pm4->atom.emit = gs_stage == MESA_SHADER_GEOMETRY ? gfx10_emit_shader_ngg_notess_gs
1091 : gfx10_emit_shader_ngg_notess_nogs;
1092 }
1093
1094 va = shader->bo->gpu_address;
1095
1096 if (es_stage == MESA_SHADER_VERTEX) {
1097 es_vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
1098
1099 if (es_info->base.vs.blit_sgprs_amd) {
1100 num_user_sgprs =
1101 SI_SGPR_VS_BLIT_DATA + es_info->base.vs.blit_sgprs_amd;
1102 } else {
1103 num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_VSGS_NUM_USER_SGPR);
1104 }
1105 } else {
1106 assert(es_stage == MESA_SHADER_TESS_EVAL);
1107 es_vgpr_comp_cnt = es_enable_prim_id ? 3 : 2;
1108 num_user_sgprs = GFX9_TESGS_NUM_USER_SGPR;
1109
1110 if (es_enable_prim_id || gs_info->uses_primid)
1111 break_wave_at_eoi = true;
1112 }
1113
1114 /* If offsets 4, 5 are used, GS_VGPR_COMP_CNT is ignored and
1115 * VGPR[0:4] are always loaded.
1116 *
1117 * Vertex shaders always need to load VGPR3, because they need to
1118 * pass edge flags for decomposed primitives (such as quads) to the PA
1119 * for the GL_LINE polygon mode to skip rendering lines on inner edges.
1120 */
1121 if (gs_info->uses_invocationid ||
1122 (gs_stage == MESA_SHADER_VERTEX && !gfx10_is_ngg_passthrough(shader)))
1123 gs_vgpr_comp_cnt = 3; /* VGPR3 contains InvocationID, edge flags. */
1124 else if ((gs_stage == MESA_SHADER_GEOMETRY && gs_info->uses_primid) ||
1125 (gs_stage == MESA_SHADER_VERTEX && shader->key.mono.u.vs_export_prim_id))
1126 gs_vgpr_comp_cnt = 2; /* VGPR2 contains PrimitiveID. */
1127 else if (input_prim >= PIPE_PRIM_TRIANGLES && !gfx10_is_ngg_passthrough(shader))
1128 gs_vgpr_comp_cnt = 1; /* VGPR1 contains offsets 2, 3 */
1129 else
1130 gs_vgpr_comp_cnt = 0; /* VGPR0 contains offsets 0, 1 */
1131
1132 unsigned wave_size = si_get_shader_wave_size(shader);
1133
1134 si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
1135 si_pm4_set_reg(pm4, R_00B324_SPI_SHADER_PGM_HI_ES, va >> 40);
1136 si_pm4_set_reg(
1137 pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS,
1138 S_00B228_VGPRS((shader->config.num_vgprs - 1) / (wave_size == 32 ? 8 : 4)) |
1139 S_00B228_FLOAT_MODE(shader->config.float_mode) | S_00B228_DX10_CLAMP(1) |
1140 S_00B228_MEM_ORDERED(1) | S_00B228_WGP_MODE(1) |
1141 S_00B228_GS_VGPR_COMP_CNT(gs_vgpr_comp_cnt));
1142 si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS,
1143 S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0) |
1144 S_00B22C_USER_SGPR(num_user_sgprs) |
1145 S_00B22C_ES_VGPR_COMP_CNT(es_vgpr_comp_cnt) |
1146 S_00B22C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5) |
1147 S_00B22C_OC_LDS_EN(es_stage == MESA_SHADER_TESS_EVAL) |
1148 S_00B22C_LDS_SIZE(shader->config.lds_size));
1149
1150 /* Determine LATE_ALLOC_GS. */
1151 unsigned num_cu_per_sh = sscreen->info.min_good_cu_per_sa;
1152 unsigned late_alloc_wave64; /* The limit is per SA. */
1153
1154 /* For Wave32, the hw will launch twice the number of late
1155 * alloc waves, so 1 == 2x wave32.
1156 *
1157 * Don't use late alloc for NGG on Navi14 due to a hw bug.
1158 */
1159 if (sscreen->info.family == CHIP_NAVI14 || !sscreen->info.use_late_alloc)
1160 late_alloc_wave64 = 0;
1161 else if (num_cu_per_sh <= 6)
1162 late_alloc_wave64 = num_cu_per_sh - 2; /* All CUs enabled */
1163 else if (shader->key.opt.ngg_culling & SI_NGG_CULL_GS_FAST_LAUNCH_ALL)
1164 late_alloc_wave64 = (num_cu_per_sh - 2) * 6;
1165 else
1166 late_alloc_wave64 = (num_cu_per_sh - 2) * 4;
1167
1168 /* Limit LATE_ALLOC_GS for prevent a hang (hw bug). */
1169 if (sscreen->info.chip_class == GFX10)
1170 late_alloc_wave64 = MIN2(late_alloc_wave64, 64);
1171
1172 si_pm4_set_reg(
1173 pm4, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
1174 S_00B204_CU_EN(0xffff) | S_00B204_SPI_SHADER_LATE_ALLOC_GS_GFX10(late_alloc_wave64));
1175
1176 nparams = MAX2(shader->info.nr_param_exports, 1);
1177 shader->ctx_reg.ngg.spi_vs_out_config =
1178 S_0286C4_VS_EXPORT_COUNT(nparams - 1) |
1179 S_0286C4_NO_PC_EXPORT(shader->info.nr_param_exports == 0);
1180
1181 shader->ctx_reg.ngg.spi_shader_idx_format =
1182 S_028708_IDX0_EXPORT_FORMAT(V_028708_SPI_SHADER_1COMP);
1183 shader->ctx_reg.ngg.spi_shader_pos_format =
1184 S_02870C_POS0_EXPORT_FORMAT(V_02870C_SPI_SHADER_4COMP) |
1185 S_02870C_POS1_EXPORT_FORMAT(shader->info.nr_pos_exports > 1 ? V_02870C_SPI_SHADER_4COMP
1186 : V_02870C_SPI_SHADER_NONE) |
1187 S_02870C_POS2_EXPORT_FORMAT(shader->info.nr_pos_exports > 2 ? V_02870C_SPI_SHADER_4COMP
1188 : V_02870C_SPI_SHADER_NONE) |
1189 S_02870C_POS3_EXPORT_FORMAT(shader->info.nr_pos_exports > 3 ? V_02870C_SPI_SHADER_4COMP
1190 : V_02870C_SPI_SHADER_NONE);
1191
1192 shader->ctx_reg.ngg.vgt_primitiveid_en =
1193 S_028A84_PRIMITIVEID_EN(es_enable_prim_id) |
1194 S_028A84_NGG_DISABLE_PROVOK_REUSE(shader->key.mono.u.vs_export_prim_id ||
1195 gs_sel->info.writes_primid);
1196
1197 if (gs_stage == MESA_SHADER_GEOMETRY) {
1198 shader->ctx_reg.ngg.vgt_esgs_ring_itemsize = es_sel->esgs_itemsize / 4;
1199 shader->ctx_reg.ngg.vgt_gs_max_vert_out = gs_sel->info.base.gs.vertices_out;
1200 } else {
1201 shader->ctx_reg.ngg.vgt_esgs_ring_itemsize = 1;
1202 }
1203
1204 if (es_stage == MESA_SHADER_TESS_EVAL)
1205 si_set_tesseval_regs(sscreen, es_sel, pm4);
1206
1207 shader->ctx_reg.ngg.vgt_gs_onchip_cntl =
1208 S_028A44_ES_VERTS_PER_SUBGRP(shader->ngg.hw_max_esverts) |
1209 S_028A44_GS_PRIMS_PER_SUBGRP(shader->ngg.max_gsprims) |
1210 S_028A44_GS_INST_PRIMS_IN_SUBGRP(shader->ngg.max_gsprims * gs_num_invocations);
1211 shader->ctx_reg.ngg.ge_max_output_per_subgroup =
1212 S_0287FC_MAX_VERTS_PER_SUBGROUP(shader->ngg.max_out_verts);
1213 shader->ctx_reg.ngg.ge_ngg_subgrp_cntl = S_028B4C_PRIM_AMP_FACTOR(shader->ngg.prim_amp_factor) |
1214 S_028B4C_THDS_PER_SUBGRP(0); /* for fast launch */
1215 shader->ctx_reg.ngg.vgt_gs_instance_cnt =
1216 S_028B90_CNT(gs_num_invocations) | S_028B90_ENABLE(gs_num_invocations > 1) |
1217 S_028B90_EN_MAX_VERT_OUT_PER_GS_INSTANCE(shader->ngg.max_vert_out_per_gs_instance);
1218
1219 /* Always output hw-generated edge flags and pass them via the prim
1220 * export to prevent drawing lines on internal edges of decomposed
1221 * primitives (such as quads) with polygon mode = lines. Only VS needs
1222 * this.
1223 */
1224 shader->ctx_reg.ngg.pa_cl_ngg_cntl =
1225 S_028838_INDEX_BUF_EDGE_FLAG_ENA(gs_stage == MESA_SHADER_VERTEX) |
1226 /* Reuse for NGG. */
1227 S_028838_VERTEX_REUSE_DEPTH(sscreen->info.chip_class >= GFX10_3 ? 30 : 0);
1228 shader->pa_cl_vs_out_cntl = si_get_vs_out_cntl(shader->selector, shader, true);
1229
1230 /* Oversubscribe PC. This improves performance when there are too many varyings. */
1231 float oversub_pc_factor = 0.25;
1232
1233 if (shader->key.opt.ngg_culling) {
1234 /* Be more aggressive with NGG culling. */
1235 if (shader->info.nr_param_exports > 4)
1236 oversub_pc_factor = 1;
1237 else if (shader->info.nr_param_exports > 2)
1238 oversub_pc_factor = 0.75;
1239 else
1240 oversub_pc_factor = 0.5;
1241 }
1242
1243 unsigned oversub_pc_lines = sscreen->info.pc_lines * oversub_pc_factor;
1244 shader->ctx_reg.ngg.ge_pc_alloc = S_030980_OVERSUB_EN(sscreen->info.use_late_alloc) |
1245 S_030980_NUM_PC_LINES(oversub_pc_lines - 1);
1246
1247 if (shader->key.opt.ngg_culling & SI_NGG_CULL_GS_FAST_LAUNCH_TRI_LIST) {
1248 shader->ge_cntl = S_03096C_PRIM_GRP_SIZE(shader->ngg.max_gsprims) |
1249 S_03096C_VERT_GRP_SIZE(shader->ngg.max_gsprims * 3);
1250 } else if (shader->key.opt.ngg_culling & SI_NGG_CULL_GS_FAST_LAUNCH_TRI_STRIP) {
1251 shader->ge_cntl = S_03096C_PRIM_GRP_SIZE(shader->ngg.max_gsprims) |
1252 S_03096C_VERT_GRP_SIZE(shader->ngg.max_gsprims + 2);
1253 } else {
1254 shader->ge_cntl = S_03096C_PRIM_GRP_SIZE(shader->ngg.max_gsprims) |
1255 S_03096C_VERT_GRP_SIZE(256) | /* 256 = disable vertex grouping */
1256 S_03096C_BREAK_WAVE_AT_EOI(break_wave_at_eoi);
1257
1258 /* Bug workaround for a possible hang with non-tessellation cases.
1259 * Tessellation always sets GE_CNTL.VERT_GRP_SIZE = 0
1260 *
1261 * Requirement: GE_CNTL.VERT_GRP_SIZE = VGT_GS_ONCHIP_CNTL.ES_VERTS_PER_SUBGRP - 5
1262 */
1263 if ((sscreen->info.chip_class == GFX10) &&
1264 (es_stage == MESA_SHADER_VERTEX || gs_stage == MESA_SHADER_VERTEX) && /* = no tess */
1265 shader->ngg.hw_max_esverts != 256) {
1266 shader->ge_cntl &= C_03096C_VERT_GRP_SIZE;
1267
1268 if (shader->ngg.hw_max_esverts > 5) {
1269 shader->ge_cntl |= S_03096C_VERT_GRP_SIZE(shader->ngg.hw_max_esverts - 5);
1270 }
1271 }
1272 }
1273
1274 if (window_space) {
1275 shader->ctx_reg.ngg.pa_cl_vte_cntl = S_028818_VTX_XY_FMT(1) | S_028818_VTX_Z_FMT(1);
1276 } else {
1277 shader->ctx_reg.ngg.pa_cl_vte_cntl =
1278 S_028818_VTX_W0_FMT(1) | S_028818_VPORT_X_SCALE_ENA(1) | S_028818_VPORT_X_OFFSET_ENA(1) |
1279 S_028818_VPORT_Y_SCALE_ENA(1) | S_028818_VPORT_Y_OFFSET_ENA(1) |
1280 S_028818_VPORT_Z_SCALE_ENA(1) | S_028818_VPORT_Z_OFFSET_ENA(1);
1281 }
1282 }
1283
1284 static void si_emit_shader_vs(struct si_context *sctx)
1285 {
1286 struct si_shader *shader = sctx->queued.named.vs->shader;
1287 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
1288
1289 if (!shader)
1290 return;
1291
1292 radeon_opt_set_context_reg(sctx, R_028A40_VGT_GS_MODE, SI_TRACKED_VGT_GS_MODE,
1293 shader->ctx_reg.vs.vgt_gs_mode);
1294 radeon_opt_set_context_reg(sctx, R_028A84_VGT_PRIMITIVEID_EN, SI_TRACKED_VGT_PRIMITIVEID_EN,
1295 shader->ctx_reg.vs.vgt_primitiveid_en);
1296
1297 if (sctx->chip_class <= GFX8) {
1298 radeon_opt_set_context_reg(sctx, R_028AB4_VGT_REUSE_OFF, SI_TRACKED_VGT_REUSE_OFF,
1299 shader->ctx_reg.vs.vgt_reuse_off);
1300 }
1301
1302 radeon_opt_set_context_reg(sctx, R_0286C4_SPI_VS_OUT_CONFIG, SI_TRACKED_SPI_VS_OUT_CONFIG,
1303 shader->ctx_reg.vs.spi_vs_out_config);
1304
1305 radeon_opt_set_context_reg(sctx, R_02870C_SPI_SHADER_POS_FORMAT,
1306 SI_TRACKED_SPI_SHADER_POS_FORMAT,
1307 shader->ctx_reg.vs.spi_shader_pos_format);
1308
1309 radeon_opt_set_context_reg(sctx, R_028818_PA_CL_VTE_CNTL, SI_TRACKED_PA_CL_VTE_CNTL,
1310 shader->ctx_reg.vs.pa_cl_vte_cntl);
1311
1312 if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL)
1313 radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
1314 shader->vgt_tf_param);
1315
1316 if (shader->vgt_vertex_reuse_block_cntl)
1317 radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
1318 SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
1319 shader->vgt_vertex_reuse_block_cntl);
1320
1321 /* Required programming for tessellation. (legacy pipeline only) */
1322 if (sctx->chip_class >= GFX10 && shader->selector->info.stage == MESA_SHADER_TESS_EVAL) {
1323 radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL,
1324 SI_TRACKED_VGT_GS_ONCHIP_CNTL,
1325 S_028A44_ES_VERTS_PER_SUBGRP(250) |
1326 S_028A44_GS_PRIMS_PER_SUBGRP(126) |
1327 S_028A44_GS_INST_PRIMS_IN_SUBGRP(126));
1328 }
1329
1330 if (sctx->chip_class >= GFX10) {
1331 radeon_opt_set_context_reg_rmw(sctx, R_02881C_PA_CL_VS_OUT_CNTL,
1332 SI_TRACKED_PA_CL_VS_OUT_CNTL__VS, shader->pa_cl_vs_out_cntl,
1333 SI_TRACKED_PA_CL_VS_OUT_CNTL__VS_MASK);
1334 }
1335
1336 if (initial_cdw != sctx->gfx_cs->current.cdw)
1337 sctx->context_roll = true;
1338
1339 /* GE_PC_ALLOC is not a context register, so it doesn't cause a context roll. */
1340 if (sctx->chip_class >= GFX10)
1341 gfx10_emit_ge_pc_alloc(sctx, shader->ctx_reg.vs.ge_pc_alloc);
1342 }
1343
1344 /**
1345 * Compute the state for \p shader, which will run as a vertex shader on the
1346 * hardware.
1347 *
1348 * If \p gs is non-NULL, it points to the geometry shader for which this shader
1349 * is the copy shader.
1350 */
1351 static void si_shader_vs(struct si_screen *sscreen, struct si_shader *shader,
1352 struct si_shader_selector *gs)
1353 {
1354 const struct si_shader_info *info = &shader->selector->info;
1355 struct si_pm4_state *pm4;
1356 unsigned num_user_sgprs, vgpr_comp_cnt;
1357 uint64_t va;
1358 unsigned nparams, oc_lds_en;
1359 bool window_space = info->stage == MESA_SHADER_VERTEX ?
1360 info->base.vs.window_space_position : 0;
1361 bool enable_prim_id = shader->key.mono.u.vs_export_prim_id || info->uses_primid;
1362
1363 pm4 = si_get_shader_pm4_state(shader);
1364 if (!pm4)
1365 return;
1366
1367 pm4->atom.emit = si_emit_shader_vs;
1368
1369 /* We always write VGT_GS_MODE in the VS state, because every switch
1370 * between different shader pipelines involving a different GS or no
1371 * GS at all involves a switch of the VS (different GS use different
1372 * copy shaders). On the other hand, when the API switches from a GS to
1373 * no GS and then back to the same GS used originally, the GS state is
1374 * not sent again.
1375 */
1376 if (!gs) {
1377 unsigned mode = V_028A40_GS_OFF;
1378
1379 /* PrimID needs GS scenario A. */
1380 if (enable_prim_id)
1381 mode = V_028A40_GS_SCENARIO_A;
1382
1383 shader->ctx_reg.vs.vgt_gs_mode = S_028A40_MODE(mode);
1384 shader->ctx_reg.vs.vgt_primitiveid_en = enable_prim_id;
1385 } else {
1386 shader->ctx_reg.vs.vgt_gs_mode =
1387 ac_vgt_gs_mode(gs->info.base.gs.vertices_out, sscreen->info.chip_class);
1388 shader->ctx_reg.vs.vgt_primitiveid_en = 0;
1389 }
1390
1391 if (sscreen->info.chip_class <= GFX8) {
1392 /* Reuse needs to be set off if we write oViewport. */
1393 shader->ctx_reg.vs.vgt_reuse_off = S_028AB4_REUSE_OFF(info->writes_viewport_index);
1394 }
1395
1396 va = shader->bo->gpu_address;
1397
1398 if (gs) {
1399 vgpr_comp_cnt = 0; /* only VertexID is needed for GS-COPY. */
1400 num_user_sgprs = SI_GSCOPY_NUM_USER_SGPR;
1401 } else if (shader->selector->info.stage == MESA_SHADER_VERTEX) {
1402 vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, enable_prim_id);
1403
1404 if (info->base.vs.blit_sgprs_amd) {
1405 num_user_sgprs = SI_SGPR_VS_BLIT_DATA + info->base.vs.blit_sgprs_amd;
1406 } else {
1407 num_user_sgprs = si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR);
1408 }
1409 } else if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL) {
1410 vgpr_comp_cnt = enable_prim_id ? 3 : 2;
1411 num_user_sgprs = SI_TES_NUM_USER_SGPR;
1412 } else
1413 unreachable("invalid shader selector type");
1414
1415 /* VS is required to export at least one param. */
1416 nparams = MAX2(shader->info.nr_param_exports, 1);
1417 shader->ctx_reg.vs.spi_vs_out_config = S_0286C4_VS_EXPORT_COUNT(nparams - 1);
1418
1419 if (sscreen->info.chip_class >= GFX10) {
1420 shader->ctx_reg.vs.spi_vs_out_config |=
1421 S_0286C4_NO_PC_EXPORT(shader->info.nr_param_exports == 0);
1422 }
1423
1424 shader->ctx_reg.vs.spi_shader_pos_format =
1425 S_02870C_POS0_EXPORT_FORMAT(V_02870C_SPI_SHADER_4COMP) |
1426 S_02870C_POS1_EXPORT_FORMAT(shader->info.nr_pos_exports > 1 ? V_02870C_SPI_SHADER_4COMP
1427 : V_02870C_SPI_SHADER_NONE) |
1428 S_02870C_POS2_EXPORT_FORMAT(shader->info.nr_pos_exports > 2 ? V_02870C_SPI_SHADER_4COMP
1429 : V_02870C_SPI_SHADER_NONE) |
1430 S_02870C_POS3_EXPORT_FORMAT(shader->info.nr_pos_exports > 3 ? V_02870C_SPI_SHADER_4COMP
1431 : V_02870C_SPI_SHADER_NONE);
1432 shader->ctx_reg.vs.ge_pc_alloc = S_030980_OVERSUB_EN(sscreen->info.use_late_alloc) |
1433 S_030980_NUM_PC_LINES(sscreen->info.pc_lines / 4 - 1);
1434 shader->pa_cl_vs_out_cntl = si_get_vs_out_cntl(shader->selector, shader, false);
1435
1436 oc_lds_en = shader->selector->info.stage == MESA_SHADER_TESS_EVAL ? 1 : 0;
1437
1438 si_pm4_set_reg(pm4, R_00B120_SPI_SHADER_PGM_LO_VS, va >> 8);
1439 si_pm4_set_reg(pm4, R_00B124_SPI_SHADER_PGM_HI_VS, S_00B124_MEM_BASE(va >> 40));
1440
1441 uint32_t rsrc1 =
1442 S_00B128_VGPRS((shader->config.num_vgprs - 1) / (sscreen->ge_wave_size == 32 ? 8 : 4)) |
1443 S_00B128_VGPR_COMP_CNT(vgpr_comp_cnt) | S_00B128_DX10_CLAMP(1) |
1444 S_00B128_MEM_ORDERED(sscreen->info.chip_class >= GFX10) |
1445 S_00B128_FLOAT_MODE(shader->config.float_mode);
1446 uint32_t rsrc2 = S_00B12C_USER_SGPR(num_user_sgprs) | S_00B12C_OC_LDS_EN(oc_lds_en) |
1447 S_00B12C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
1448
1449 if (sscreen->info.chip_class >= GFX10)
1450 rsrc2 |= S_00B12C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
1451 else if (sscreen->info.chip_class == GFX9)
1452 rsrc2 |= S_00B12C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
1453
1454 if (sscreen->info.chip_class <= GFX9)
1455 rsrc1 |= S_00B128_SGPRS((shader->config.num_sgprs - 1) / 8);
1456
1457 if (!sscreen->use_ngg_streamout) {
1458 rsrc2 |= S_00B12C_SO_BASE0_EN(!!shader->selector->so.stride[0]) |
1459 S_00B12C_SO_BASE1_EN(!!shader->selector->so.stride[1]) |
1460 S_00B12C_SO_BASE2_EN(!!shader->selector->so.stride[2]) |
1461 S_00B12C_SO_BASE3_EN(!!shader->selector->so.stride[3]) |
1462 S_00B12C_SO_EN(!!shader->selector->so.num_outputs);
1463 }
1464
1465 si_pm4_set_reg(pm4, R_00B128_SPI_SHADER_PGM_RSRC1_VS, rsrc1);
1466 si_pm4_set_reg(pm4, R_00B12C_SPI_SHADER_PGM_RSRC2_VS, rsrc2);
1467
1468 if (window_space)
1469 shader->ctx_reg.vs.pa_cl_vte_cntl = S_028818_VTX_XY_FMT(1) | S_028818_VTX_Z_FMT(1);
1470 else
1471 shader->ctx_reg.vs.pa_cl_vte_cntl =
1472 S_028818_VTX_W0_FMT(1) | S_028818_VPORT_X_SCALE_ENA(1) | S_028818_VPORT_X_OFFSET_ENA(1) |
1473 S_028818_VPORT_Y_SCALE_ENA(1) | S_028818_VPORT_Y_OFFSET_ENA(1) |
1474 S_028818_VPORT_Z_SCALE_ENA(1) | S_028818_VPORT_Z_OFFSET_ENA(1);
1475
1476 if (shader->selector->info.stage == MESA_SHADER_TESS_EVAL)
1477 si_set_tesseval_regs(sscreen, shader->selector, pm4);
1478
1479 polaris_set_vgt_vertex_reuse(sscreen, shader->selector, shader, pm4);
1480 }
1481
1482 static unsigned si_get_ps_num_interp(struct si_shader *ps)
1483 {
1484 struct si_shader_info *info = &ps->selector->info;
1485 unsigned num_colors = !!(info->colors_read & 0x0f) + !!(info->colors_read & 0xf0);
1486 unsigned num_interp =
1487 ps->selector->info.num_inputs + (ps->key.part.ps.prolog.color_two_side ? num_colors : 0);
1488
1489 assert(num_interp <= 32);
1490 return MIN2(num_interp, 32);
1491 }
1492
1493 static unsigned si_get_spi_shader_col_format(struct si_shader *shader)
1494 {
1495 unsigned spi_shader_col_format = shader->key.part.ps.epilog.spi_shader_col_format;
1496 unsigned value = 0, num_mrts = 0;
1497 unsigned i, num_targets = (util_last_bit(spi_shader_col_format) + 3) / 4;
1498
1499 /* Remove holes in spi_shader_col_format. */
1500 for (i = 0; i < num_targets; i++) {
1501 unsigned spi_format = (spi_shader_col_format >> (i * 4)) & 0xf;
1502
1503 if (spi_format) {
1504 value |= spi_format << (num_mrts * 4);
1505 num_mrts++;
1506 }
1507 }
1508
1509 return value;
1510 }
1511
1512 static void si_emit_shader_ps(struct si_context *sctx)
1513 {
1514 struct si_shader *shader = sctx->queued.named.ps->shader;
1515 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
1516
1517 if (!shader)
1518 return;
1519
1520 /* R_0286CC_SPI_PS_INPUT_ENA, R_0286D0_SPI_PS_INPUT_ADDR*/
1521 radeon_opt_set_context_reg2(sctx, R_0286CC_SPI_PS_INPUT_ENA, SI_TRACKED_SPI_PS_INPUT_ENA,
1522 shader->ctx_reg.ps.spi_ps_input_ena,
1523 shader->ctx_reg.ps.spi_ps_input_addr);
1524
1525 radeon_opt_set_context_reg(sctx, R_0286E0_SPI_BARYC_CNTL, SI_TRACKED_SPI_BARYC_CNTL,
1526 shader->ctx_reg.ps.spi_baryc_cntl);
1527 radeon_opt_set_context_reg(sctx, R_0286D8_SPI_PS_IN_CONTROL, SI_TRACKED_SPI_PS_IN_CONTROL,
1528 shader->ctx_reg.ps.spi_ps_in_control);
1529
1530 /* R_028710_SPI_SHADER_Z_FORMAT, R_028714_SPI_SHADER_COL_FORMAT */
1531 radeon_opt_set_context_reg2(sctx, R_028710_SPI_SHADER_Z_FORMAT, SI_TRACKED_SPI_SHADER_Z_FORMAT,
1532 shader->ctx_reg.ps.spi_shader_z_format,
1533 shader->ctx_reg.ps.spi_shader_col_format);
1534
1535 radeon_opt_set_context_reg(sctx, R_02823C_CB_SHADER_MASK, SI_TRACKED_CB_SHADER_MASK,
1536 shader->ctx_reg.ps.cb_shader_mask);
1537
1538 if (initial_cdw != sctx->gfx_cs->current.cdw)
1539 sctx->context_roll = true;
1540 }
1541
1542 static void si_shader_ps(struct si_screen *sscreen, struct si_shader *shader)
1543 {
1544 struct si_shader_info *info = &shader->selector->info;
1545 struct si_pm4_state *pm4;
1546 unsigned spi_ps_in_control, spi_shader_col_format, cb_shader_mask;
1547 unsigned spi_baryc_cntl = S_0286E0_FRONT_FACE_ALL_BITS(1);
1548 uint64_t va;
1549 unsigned input_ena = shader->config.spi_ps_input_ena;
1550
1551 /* we need to enable at least one of them, otherwise we hang the GPU */
1552 assert(G_0286CC_PERSP_SAMPLE_ENA(input_ena) || G_0286CC_PERSP_CENTER_ENA(input_ena) ||
1553 G_0286CC_PERSP_CENTROID_ENA(input_ena) || G_0286CC_PERSP_PULL_MODEL_ENA(input_ena) ||
1554 G_0286CC_LINEAR_SAMPLE_ENA(input_ena) || G_0286CC_LINEAR_CENTER_ENA(input_ena) ||
1555 G_0286CC_LINEAR_CENTROID_ENA(input_ena) || G_0286CC_LINE_STIPPLE_TEX_ENA(input_ena));
1556 /* POS_W_FLOAT_ENA requires one of the perspective weights. */
1557 assert(!G_0286CC_POS_W_FLOAT_ENA(input_ena) || G_0286CC_PERSP_SAMPLE_ENA(input_ena) ||
1558 G_0286CC_PERSP_CENTER_ENA(input_ena) || G_0286CC_PERSP_CENTROID_ENA(input_ena) ||
1559 G_0286CC_PERSP_PULL_MODEL_ENA(input_ena));
1560
1561 /* Validate interpolation optimization flags (read as implications). */
1562 assert(!shader->key.part.ps.prolog.bc_optimize_for_persp ||
1563 (G_0286CC_PERSP_CENTER_ENA(input_ena) && G_0286CC_PERSP_CENTROID_ENA(input_ena)));
1564 assert(!shader->key.part.ps.prolog.bc_optimize_for_linear ||
1565 (G_0286CC_LINEAR_CENTER_ENA(input_ena) && G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
1566 assert(!shader->key.part.ps.prolog.force_persp_center_interp ||
1567 (!G_0286CC_PERSP_SAMPLE_ENA(input_ena) && !G_0286CC_PERSP_CENTROID_ENA(input_ena)));
1568 assert(!shader->key.part.ps.prolog.force_linear_center_interp ||
1569 (!G_0286CC_LINEAR_SAMPLE_ENA(input_ena) && !G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
1570 assert(!shader->key.part.ps.prolog.force_persp_sample_interp ||
1571 (!G_0286CC_PERSP_CENTER_ENA(input_ena) && !G_0286CC_PERSP_CENTROID_ENA(input_ena)));
1572 assert(!shader->key.part.ps.prolog.force_linear_sample_interp ||
1573 (!G_0286CC_LINEAR_CENTER_ENA(input_ena) && !G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
1574
1575 /* Validate cases when the optimizations are off (read as implications). */
1576 assert(shader->key.part.ps.prolog.bc_optimize_for_persp ||
1577 !G_0286CC_PERSP_CENTER_ENA(input_ena) || !G_0286CC_PERSP_CENTROID_ENA(input_ena));
1578 assert(shader->key.part.ps.prolog.bc_optimize_for_linear ||
1579 !G_0286CC_LINEAR_CENTER_ENA(input_ena) || !G_0286CC_LINEAR_CENTROID_ENA(input_ena));
1580
1581 pm4 = si_get_shader_pm4_state(shader);
1582 if (!pm4)
1583 return;
1584
1585 pm4->atom.emit = si_emit_shader_ps;
1586
1587 /* SPI_BARYC_CNTL.POS_FLOAT_LOCATION
1588 * Possible vaules:
1589 * 0 -> Position = pixel center
1590 * 1 -> Position = pixel centroid
1591 * 2 -> Position = at sample position
1592 *
1593 * From GLSL 4.5 specification, section 7.1:
1594 * "The variable gl_FragCoord is available as an input variable from
1595 * within fragment shaders and it holds the window relative coordinates
1596 * (x, y, z, 1/w) values for the fragment. If multi-sampling, this
1597 * value can be for any location within the pixel, or one of the
1598 * fragment samples. The use of centroid does not further restrict
1599 * this value to be inside the current primitive."
1600 *
1601 * Meaning that centroid has no effect and we can return anything within
1602 * the pixel. Thus, return the value at sample position, because that's
1603 * the most accurate one shaders can get.
1604 */
1605 spi_baryc_cntl |= S_0286E0_POS_FLOAT_LOCATION(2);
1606
1607 if (info->base.fs.pixel_center_integer)
1608 spi_baryc_cntl |= S_0286E0_POS_FLOAT_ULC(1);
1609
1610 spi_shader_col_format = si_get_spi_shader_col_format(shader);
1611 cb_shader_mask = ac_get_cb_shader_mask(shader->key.part.ps.epilog.spi_shader_col_format);
1612
1613 /* Ensure that some export memory is always allocated, for two reasons:
1614 *
1615 * 1) Correctness: The hardware ignores the EXEC mask if no export
1616 * memory is allocated, so KILL and alpha test do not work correctly
1617 * without this.
1618 * 2) Performance: Every shader needs at least a NULL export, even when
1619 * it writes no color/depth output. The NULL export instruction
1620 * stalls without this setting.
1621 *
1622 * Don't add this to CB_SHADER_MASK.
1623 *
1624 * GFX10 supports pixel shaders without exports by setting both
1625 * the color and Z formats to SPI_SHADER_ZERO. The hw will skip export
1626 * instructions if any are present.
1627 */
1628 if ((sscreen->info.chip_class <= GFX9 || info->base.fs.uses_discard ||
1629 shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_ALWAYS) &&
1630 !spi_shader_col_format && !info->writes_z && !info->writes_stencil &&
1631 !info->writes_samplemask)
1632 spi_shader_col_format = V_028714_SPI_SHADER_32_R;
1633
1634 shader->ctx_reg.ps.spi_ps_input_ena = input_ena;
1635 shader->ctx_reg.ps.spi_ps_input_addr = shader->config.spi_ps_input_addr;
1636
1637 /* Set interpolation controls. */
1638 spi_ps_in_control = S_0286D8_NUM_INTERP(si_get_ps_num_interp(shader)) |
1639 S_0286D8_PS_W32_EN(sscreen->ps_wave_size == 32);
1640
1641 shader->ctx_reg.ps.spi_baryc_cntl = spi_baryc_cntl;
1642 shader->ctx_reg.ps.spi_ps_in_control = spi_ps_in_control;
1643 shader->ctx_reg.ps.spi_shader_z_format =
1644 ac_get_spi_shader_z_format(info->writes_z, info->writes_stencil, info->writes_samplemask);
1645 shader->ctx_reg.ps.spi_shader_col_format = spi_shader_col_format;
1646 shader->ctx_reg.ps.cb_shader_mask = cb_shader_mask;
1647
1648 va = shader->bo->gpu_address;
1649 si_pm4_set_reg(pm4, R_00B020_SPI_SHADER_PGM_LO_PS, va >> 8);
1650 si_pm4_set_reg(pm4, R_00B024_SPI_SHADER_PGM_HI_PS, S_00B024_MEM_BASE(va >> 40));
1651
1652 uint32_t rsrc1 =
1653 S_00B028_VGPRS((shader->config.num_vgprs - 1) / (sscreen->ps_wave_size == 32 ? 8 : 4)) |
1654 S_00B028_DX10_CLAMP(1) | S_00B028_MEM_ORDERED(sscreen->info.chip_class >= GFX10) |
1655 S_00B028_FLOAT_MODE(shader->config.float_mode);
1656
1657 if (sscreen->info.chip_class < GFX10) {
1658 rsrc1 |= S_00B028_SGPRS((shader->config.num_sgprs - 1) / 8);
1659 }
1660
1661 si_pm4_set_reg(pm4, R_00B028_SPI_SHADER_PGM_RSRC1_PS, rsrc1);
1662 si_pm4_set_reg(pm4, R_00B02C_SPI_SHADER_PGM_RSRC2_PS,
1663 S_00B02C_EXTRA_LDS_SIZE(shader->config.lds_size) |
1664 S_00B02C_USER_SGPR(SI_PS_NUM_USER_SGPR) |
1665 S_00B32C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
1666 }
1667
1668 static void si_shader_init_pm4_state(struct si_screen *sscreen, struct si_shader *shader)
1669 {
1670 switch (shader->selector->info.stage) {
1671 case MESA_SHADER_VERTEX:
1672 if (shader->key.as_ls)
1673 si_shader_ls(sscreen, shader);
1674 else if (shader->key.as_es)
1675 si_shader_es(sscreen, shader);
1676 else if (shader->key.as_ngg)
1677 gfx10_shader_ngg(sscreen, shader);
1678 else
1679 si_shader_vs(sscreen, shader, NULL);
1680 break;
1681 case MESA_SHADER_TESS_CTRL:
1682 si_shader_hs(sscreen, shader);
1683 break;
1684 case MESA_SHADER_TESS_EVAL:
1685 if (shader->key.as_es)
1686 si_shader_es(sscreen, shader);
1687 else if (shader->key.as_ngg)
1688 gfx10_shader_ngg(sscreen, shader);
1689 else
1690 si_shader_vs(sscreen, shader, NULL);
1691 break;
1692 case MESA_SHADER_GEOMETRY:
1693 if (shader->key.as_ngg)
1694 gfx10_shader_ngg(sscreen, shader);
1695 else
1696 si_shader_gs(sscreen, shader);
1697 break;
1698 case MESA_SHADER_FRAGMENT:
1699 si_shader_ps(sscreen, shader);
1700 break;
1701 default:
1702 assert(0);
1703 }
1704 }
1705
1706 static unsigned si_get_alpha_test_func(struct si_context *sctx)
1707 {
1708 /* Alpha-test should be disabled if colorbuffer 0 is integer. */
1709 return sctx->queued.named.dsa->alpha_func;
1710 }
1711
1712 void si_shader_selector_key_vs(struct si_context *sctx, struct si_shader_selector *vs,
1713 struct si_shader_key *key, struct si_vs_prolog_bits *prolog_key)
1714 {
1715 if (!sctx->vertex_elements || vs->info.base.vs.blit_sgprs_amd)
1716 return;
1717
1718 struct si_vertex_elements *elts = sctx->vertex_elements;
1719
1720 prolog_key->instance_divisor_is_one = elts->instance_divisor_is_one;
1721 prolog_key->instance_divisor_is_fetched = elts->instance_divisor_is_fetched;
1722 prolog_key->unpack_instance_id_from_vertex_id = sctx->prim_discard_cs_instancing;
1723
1724 /* Prefer a monolithic shader to allow scheduling divisions around
1725 * VBO loads. */
1726 if (prolog_key->instance_divisor_is_fetched)
1727 key->opt.prefer_mono = 1;
1728
1729 unsigned count = MIN2(vs->info.num_inputs, elts->count);
1730 unsigned count_mask = (1 << count) - 1;
1731 unsigned fix = elts->fix_fetch_always & count_mask;
1732 unsigned opencode = elts->fix_fetch_opencode & count_mask;
1733
1734 if (sctx->vertex_buffer_unaligned & elts->vb_alignment_check_mask) {
1735 uint32_t mask = elts->fix_fetch_unaligned & count_mask;
1736 while (mask) {
1737 unsigned i = u_bit_scan(&mask);
1738 unsigned log_hw_load_size = 1 + ((elts->hw_load_is_dword >> i) & 1);
1739 unsigned vbidx = elts->vertex_buffer_index[i];
1740 struct pipe_vertex_buffer *vb = &sctx->vertex_buffer[vbidx];
1741 unsigned align_mask = (1 << log_hw_load_size) - 1;
1742 if (vb->buffer_offset & align_mask || vb->stride & align_mask) {
1743 fix |= 1 << i;
1744 opencode |= 1 << i;
1745 }
1746 }
1747 }
1748
1749 while (fix) {
1750 unsigned i = u_bit_scan(&fix);
1751 key->mono.vs_fix_fetch[i].bits = elts->fix_fetch[i];
1752 }
1753 key->mono.vs_fetch_opencode = opencode;
1754 }
1755
1756 static void si_shader_selector_key_hw_vs(struct si_context *sctx, struct si_shader_selector *vs,
1757 struct si_shader_key *key)
1758 {
1759 struct si_shader_selector *ps = sctx->ps_shader.cso;
1760
1761 key->opt.clip_disable = sctx->queued.named.rasterizer->clip_plane_enable == 0 &&
1762 (vs->info.base.clip_distance_array_size || vs->info.writes_clipvertex) &&
1763 !vs->info.base.cull_distance_array_size;
1764
1765 /* Find out if PS is disabled. */
1766 bool ps_disabled = true;
1767 if (ps) {
1768 bool ps_modifies_zs = ps->info.base.fs.uses_discard || ps->info.writes_z || ps->info.writes_stencil ||
1769 ps->info.writes_samplemask ||
1770 sctx->queued.named.blend->alpha_to_coverage ||
1771 si_get_alpha_test_func(sctx) != PIPE_FUNC_ALWAYS;
1772 unsigned ps_colormask = si_get_total_colormask(sctx);
1773
1774 ps_disabled = sctx->queued.named.rasterizer->rasterizer_discard ||
1775 (!ps_colormask && !ps_modifies_zs && !ps->info.base.writes_memory);
1776 }
1777
1778 /* Find out which VS outputs aren't used by the PS. */
1779 uint64_t outputs_written = vs->outputs_written_before_ps;
1780 uint64_t inputs_read = 0;
1781
1782 /* Ignore outputs that are not passed from VS to PS. */
1783 outputs_written &= ~((1ull << si_shader_io_get_unique_index(VARYING_SLOT_POS, true)) |
1784 (1ull << si_shader_io_get_unique_index(VARYING_SLOT_PSIZ, true)) |
1785 (1ull << si_shader_io_get_unique_index(VARYING_SLOT_CLIP_VERTEX, true)));
1786
1787 if (!ps_disabled) {
1788 inputs_read = ps->inputs_read;
1789 }
1790
1791 uint64_t linked = outputs_written & inputs_read;
1792
1793 key->opt.kill_outputs = ~linked & outputs_written;
1794 key->opt.ngg_culling = sctx->ngg_culling;
1795
1796 if (sctx->ps_shader.cso && sctx->ps_shader.cso->info.uses_primid)
1797 key->mono.u.vs_export_prim_id = 1;
1798
1799 /* We need PKT3_CONTEXT_REG_RMW, which we currently only use on GFX10+. */
1800 if (sctx->chip_class >= GFX10 &&
1801 vs->info.writes_psize &&
1802 sctx->current_rast_prim != PIPE_PRIM_POINTS &&
1803 !sctx->queued.named.rasterizer->polygon_mode_is_points)
1804 key->opt.kill_pointsize = 1;
1805 }
1806
1807 /* Compute the key for the hw shader variant */
1808 static inline void si_shader_selector_key(struct pipe_context *ctx, struct si_shader_selector *sel,
1809 union si_vgt_stages_key stages_key,
1810 struct si_shader_key *key)
1811 {
1812 struct si_context *sctx = (struct si_context *)ctx;
1813
1814 memset(key, 0, sizeof(*key));
1815
1816 switch (sel->info.stage) {
1817 case MESA_SHADER_VERTEX:
1818 si_shader_selector_key_vs(sctx, sel, key, &key->part.vs.prolog);
1819
1820 if (sctx->tes_shader.cso)
1821 key->as_ls = 1;
1822 else if (sctx->gs_shader.cso) {
1823 key->as_es = 1;
1824 key->as_ngg = stages_key.u.ngg;
1825 } else {
1826 key->as_ngg = stages_key.u.ngg;
1827 si_shader_selector_key_hw_vs(sctx, sel, key);
1828 }
1829 break;
1830 case MESA_SHADER_TESS_CTRL:
1831 if (sctx->chip_class >= GFX9) {
1832 si_shader_selector_key_vs(sctx, sctx->vs_shader.cso, key, &key->part.tcs.ls_prolog);
1833 key->part.tcs.ls = sctx->vs_shader.cso;
1834
1835 /* When the LS VGPR fix is needed, monolithic shaders
1836 * can:
1837 * - avoid initializing EXEC in both the LS prolog
1838 * and the LS main part when !vs_needs_prolog
1839 * - remove the fixup for unused input VGPRs
1840 */
1841 key->part.tcs.ls_prolog.ls_vgpr_fix = sctx->ls_vgpr_fix;
1842
1843 /* The LS output / HS input layout can be communicated
1844 * directly instead of via user SGPRs for merged LS-HS.
1845 * The LS VGPR fix prefers this too.
1846 */
1847 key->opt.prefer_mono = 1;
1848 }
1849
1850 key->part.tcs.epilog.prim_mode =
1851 sctx->tes_shader.cso->info.base.tess.primitive_mode;
1852 key->part.tcs.epilog.invoc0_tess_factors_are_def =
1853 sel->info.tessfactors_are_def_in_all_invocs;
1854 key->part.tcs.epilog.tes_reads_tess_factors = sctx->tes_shader.cso->info.reads_tess_factors;
1855
1856 if (sel == sctx->fixed_func_tcs_shader.cso)
1857 key->mono.u.ff_tcs_inputs_to_copy = sctx->vs_shader.cso->outputs_written;
1858 break;
1859 case MESA_SHADER_TESS_EVAL:
1860 key->as_ngg = stages_key.u.ngg;
1861
1862 if (sctx->gs_shader.cso)
1863 key->as_es = 1;
1864 else {
1865 si_shader_selector_key_hw_vs(sctx, sel, key);
1866 }
1867 break;
1868 case MESA_SHADER_GEOMETRY:
1869 if (sctx->chip_class >= GFX9) {
1870 if (sctx->tes_shader.cso) {
1871 key->part.gs.es = sctx->tes_shader.cso;
1872 } else {
1873 si_shader_selector_key_vs(sctx, sctx->vs_shader.cso, key, &key->part.gs.vs_prolog);
1874 key->part.gs.es = sctx->vs_shader.cso;
1875 key->part.gs.prolog.gfx9_prev_is_vs = 1;
1876 }
1877
1878 key->as_ngg = stages_key.u.ngg;
1879
1880 /* Merged ES-GS can have unbalanced wave usage.
1881 *
1882 * ES threads are per-vertex, while GS threads are
1883 * per-primitive. So without any amplification, there
1884 * are fewer GS threads than ES threads, which can result
1885 * in empty (no-op) GS waves. With too much amplification,
1886 * there are more GS threads than ES threads, which
1887 * can result in empty (no-op) ES waves.
1888 *
1889 * Non-monolithic shaders are implemented by setting EXEC
1890 * at the beginning of shader parts, and don't jump to
1891 * the end if EXEC is 0.
1892 *
1893 * Monolithic shaders use conditional blocks, so they can
1894 * jump and skip empty waves of ES or GS. So set this to
1895 * always use optimized variants, which are monolithic.
1896 */
1897 key->opt.prefer_mono = 1;
1898 }
1899 key->part.gs.prolog.tri_strip_adj_fix = sctx->gs_tri_strip_adj_fix;
1900 break;
1901 case MESA_SHADER_FRAGMENT: {
1902 struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
1903 struct si_state_blend *blend = sctx->queued.named.blend;
1904
1905 if (sel->info.color0_writes_all_cbufs &&
1906 sel->info.colors_written == 0x1)
1907 key->part.ps.epilog.last_cbuf = MAX2(sctx->framebuffer.state.nr_cbufs, 1) - 1;
1908
1909 /* Select the shader color format based on whether
1910 * blending or alpha are needed.
1911 */
1912 key->part.ps.epilog.spi_shader_col_format =
1913 (blend->blend_enable_4bit & blend->need_src_alpha_4bit &
1914 sctx->framebuffer.spi_shader_col_format_blend_alpha) |
1915 (blend->blend_enable_4bit & ~blend->need_src_alpha_4bit &
1916 sctx->framebuffer.spi_shader_col_format_blend) |
1917 (~blend->blend_enable_4bit & blend->need_src_alpha_4bit &
1918 sctx->framebuffer.spi_shader_col_format_alpha) |
1919 (~blend->blend_enable_4bit & ~blend->need_src_alpha_4bit &
1920 sctx->framebuffer.spi_shader_col_format);
1921 key->part.ps.epilog.spi_shader_col_format &= blend->cb_target_enabled_4bit;
1922
1923 /* The output for dual source blending should have
1924 * the same format as the first output.
1925 */
1926 if (blend->dual_src_blend) {
1927 key->part.ps.epilog.spi_shader_col_format |=
1928 (key->part.ps.epilog.spi_shader_col_format & 0xf) << 4;
1929 }
1930
1931 /* If alpha-to-coverage is enabled, we have to export alpha
1932 * even if there is no color buffer.
1933 */
1934 if (!(key->part.ps.epilog.spi_shader_col_format & 0xf) && blend->alpha_to_coverage)
1935 key->part.ps.epilog.spi_shader_col_format |= V_028710_SPI_SHADER_32_AR;
1936
1937 /* On GFX6 and GFX7 except Hawaii, the CB doesn't clamp outputs
1938 * to the range supported by the type if a channel has less
1939 * than 16 bits and the export format is 16_ABGR.
1940 */
1941 if (sctx->chip_class <= GFX7 && sctx->family != CHIP_HAWAII) {
1942 key->part.ps.epilog.color_is_int8 = sctx->framebuffer.color_is_int8;
1943 key->part.ps.epilog.color_is_int10 = sctx->framebuffer.color_is_int10;
1944 }
1945
1946 /* Disable unwritten outputs (if WRITE_ALL_CBUFS isn't enabled). */
1947 if (!key->part.ps.epilog.last_cbuf) {
1948 key->part.ps.epilog.spi_shader_col_format &= sel->colors_written_4bit;
1949 key->part.ps.epilog.color_is_int8 &= sel->info.colors_written;
1950 key->part.ps.epilog.color_is_int10 &= sel->info.colors_written;
1951 }
1952
1953 bool is_poly = !util_prim_is_points_or_lines(sctx->current_rast_prim);
1954 bool is_line = util_prim_is_lines(sctx->current_rast_prim);
1955
1956 key->part.ps.prolog.color_two_side = rs->two_side && sel->info.colors_read;
1957 key->part.ps.prolog.flatshade_colors = rs->flatshade && sel->info.colors_read;
1958
1959 key->part.ps.epilog.alpha_to_one = blend->alpha_to_one && rs->multisample_enable;
1960
1961 key->part.ps.prolog.poly_stipple = rs->poly_stipple_enable && is_poly;
1962 key->part.ps.epilog.poly_line_smoothing =
1963 ((is_poly && rs->poly_smooth) || (is_line && rs->line_smooth)) &&
1964 sctx->framebuffer.nr_samples <= 1;
1965 key->part.ps.epilog.clamp_color = rs->clamp_fragment_color;
1966
1967 if (sctx->ps_iter_samples > 1 && sel->info.reads_samplemask) {
1968 key->part.ps.prolog.samplemask_log_ps_iter = util_logbase2(sctx->ps_iter_samples);
1969 }
1970
1971 if (rs->force_persample_interp && rs->multisample_enable &&
1972 sctx->framebuffer.nr_samples > 1 && sctx->ps_iter_samples > 1) {
1973 key->part.ps.prolog.force_persp_sample_interp =
1974 sel->info.uses_persp_center || sel->info.uses_persp_centroid;
1975
1976 key->part.ps.prolog.force_linear_sample_interp =
1977 sel->info.uses_linear_center || sel->info.uses_linear_centroid;
1978 } else if (rs->multisample_enable && sctx->framebuffer.nr_samples > 1) {
1979 key->part.ps.prolog.bc_optimize_for_persp =
1980 sel->info.uses_persp_center && sel->info.uses_persp_centroid;
1981 key->part.ps.prolog.bc_optimize_for_linear =
1982 sel->info.uses_linear_center && sel->info.uses_linear_centroid;
1983 } else {
1984 /* Make sure SPI doesn't compute more than 1 pair
1985 * of (i,j), which is the optimization here. */
1986 key->part.ps.prolog.force_persp_center_interp = sel->info.uses_persp_center +
1987 sel->info.uses_persp_centroid +
1988 sel->info.uses_persp_sample >
1989 1;
1990
1991 key->part.ps.prolog.force_linear_center_interp = sel->info.uses_linear_center +
1992 sel->info.uses_linear_centroid +
1993 sel->info.uses_linear_sample >
1994 1;
1995
1996 if (sel->info.uses_interp_at_sample)
1997 key->mono.u.ps.interpolate_at_sample_force_center = 1;
1998 }
1999
2000 key->part.ps.epilog.alpha_func = si_get_alpha_test_func(sctx);
2001
2002 /* ps_uses_fbfetch is true only if the color buffer is bound. */
2003 if (sctx->ps_uses_fbfetch && !sctx->blitter->running) {
2004 struct pipe_surface *cb0 = sctx->framebuffer.state.cbufs[0];
2005 struct pipe_resource *tex = cb0->texture;
2006
2007 /* 1D textures are allocated and used as 2D on GFX9. */
2008 key->mono.u.ps.fbfetch_msaa = sctx->framebuffer.nr_samples > 1;
2009 key->mono.u.ps.fbfetch_is_1D =
2010 sctx->chip_class != GFX9 &&
2011 (tex->target == PIPE_TEXTURE_1D || tex->target == PIPE_TEXTURE_1D_ARRAY);
2012 key->mono.u.ps.fbfetch_layered =
2013 tex->target == PIPE_TEXTURE_1D_ARRAY || tex->target == PIPE_TEXTURE_2D_ARRAY ||
2014 tex->target == PIPE_TEXTURE_CUBE || tex->target == PIPE_TEXTURE_CUBE_ARRAY ||
2015 tex->target == PIPE_TEXTURE_3D;
2016 }
2017 break;
2018 }
2019 default:
2020 assert(0);
2021 }
2022
2023 if (unlikely(sctx->screen->debug_flags & DBG(NO_OPT_VARIANT)))
2024 memset(&key->opt, 0, sizeof(key->opt));
2025 }
2026
2027 static void si_build_shader_variant(struct si_shader *shader, int thread_index, bool low_priority)
2028 {
2029 struct si_shader_selector *sel = shader->selector;
2030 struct si_screen *sscreen = sel->screen;
2031 struct ac_llvm_compiler *compiler;
2032 struct pipe_debug_callback *debug = &shader->compiler_ctx_state.debug;
2033
2034 if (thread_index >= 0) {
2035 if (low_priority) {
2036 assert(thread_index < ARRAY_SIZE(sscreen->compiler_lowp));
2037 compiler = &sscreen->compiler_lowp[thread_index];
2038 } else {
2039 assert(thread_index < ARRAY_SIZE(sscreen->compiler));
2040 compiler = &sscreen->compiler[thread_index];
2041 }
2042 if (!debug->async)
2043 debug = NULL;
2044 } else {
2045 assert(!low_priority);
2046 compiler = shader->compiler_ctx_state.compiler;
2047 }
2048
2049 if (!compiler->passes)
2050 si_init_compiler(sscreen, compiler);
2051
2052 if (unlikely(!si_create_shader_variant(sscreen, compiler, shader, debug))) {
2053 PRINT_ERR("Failed to build shader variant (type=%u)\n", sel->info.stage);
2054 shader->compilation_failed = true;
2055 return;
2056 }
2057
2058 if (shader->compiler_ctx_state.is_debug_context) {
2059 FILE *f = open_memstream(&shader->shader_log, &shader->shader_log_size);
2060 if (f) {
2061 si_shader_dump(sscreen, shader, NULL, f, false);
2062 fclose(f);
2063 }
2064 }
2065
2066 si_shader_init_pm4_state(sscreen, shader);
2067 }
2068
2069 static void si_build_shader_variant_low_priority(void *job, int thread_index)
2070 {
2071 struct si_shader *shader = (struct si_shader *)job;
2072
2073 assert(thread_index >= 0);
2074
2075 si_build_shader_variant(shader, thread_index, true);
2076 }
2077
2078 static const struct si_shader_key zeroed;
2079
2080 static bool si_check_missing_main_part(struct si_screen *sscreen, struct si_shader_selector *sel,
2081 struct si_compiler_ctx_state *compiler_state,
2082 struct si_shader_key *key)
2083 {
2084 struct si_shader **mainp = si_get_main_shader_part(sel, key);
2085
2086 if (!*mainp) {
2087 struct si_shader *main_part = CALLOC_STRUCT(si_shader);
2088
2089 if (!main_part)
2090 return false;
2091
2092 /* We can leave the fence as permanently signaled because the
2093 * main part becomes visible globally only after it has been
2094 * compiled. */
2095 util_queue_fence_init(&main_part->ready);
2096
2097 main_part->selector = sel;
2098 main_part->key.as_es = key->as_es;
2099 main_part->key.as_ls = key->as_ls;
2100 main_part->key.as_ngg = key->as_ngg;
2101 main_part->is_monolithic = false;
2102
2103 if (!si_compile_shader(sscreen, compiler_state->compiler, main_part,
2104 &compiler_state->debug)) {
2105 FREE(main_part);
2106 return false;
2107 }
2108 *mainp = main_part;
2109 }
2110 return true;
2111 }
2112
2113 /**
2114 * Select a shader variant according to the shader key.
2115 *
2116 * \param optimized_or_none If the key describes an optimized shader variant and
2117 * the compilation isn't finished, don't select any
2118 * shader and return an error.
2119 */
2120 int si_shader_select_with_key(struct si_screen *sscreen, struct si_shader_ctx_state *state,
2121 struct si_compiler_ctx_state *compiler_state,
2122 struct si_shader_key *key, int thread_index, bool optimized_or_none)
2123 {
2124 struct si_shader_selector *sel = state->cso;
2125 struct si_shader_selector *previous_stage_sel = NULL;
2126 struct si_shader *current = state->current;
2127 struct si_shader *iter, *shader = NULL;
2128
2129 again:
2130 /* Check if we don't need to change anything.
2131 * This path is also used for most shaders that don't need multiple
2132 * variants, it will cost just a computation of the key and this
2133 * test. */
2134 if (likely(current && memcmp(&current->key, key, sizeof(*key)) == 0)) {
2135 if (unlikely(!util_queue_fence_is_signalled(&current->ready))) {
2136 if (current->is_optimized) {
2137 if (optimized_or_none)
2138 return -1;
2139
2140 memset(&key->opt, 0, sizeof(key->opt));
2141 goto current_not_ready;
2142 }
2143
2144 util_queue_fence_wait(&current->ready);
2145 }
2146
2147 return current->compilation_failed ? -1 : 0;
2148 }
2149 current_not_ready:
2150
2151 /* This must be done before the mutex is locked, because async GS
2152 * compilation calls this function too, and therefore must enter
2153 * the mutex first.
2154 *
2155 * Only wait if we are in a draw call. Don't wait if we are
2156 * in a compiler thread.
2157 */
2158 if (thread_index < 0)
2159 util_queue_fence_wait(&sel->ready);
2160
2161 simple_mtx_lock(&sel->mutex);
2162
2163 /* Find the shader variant. */
2164 for (iter = sel->first_variant; iter; iter = iter->next_variant) {
2165 /* Don't check the "current" shader. We checked it above. */
2166 if (current != iter && memcmp(&iter->key, key, sizeof(*key)) == 0) {
2167 simple_mtx_unlock(&sel->mutex);
2168
2169 if (unlikely(!util_queue_fence_is_signalled(&iter->ready))) {
2170 /* If it's an optimized shader and its compilation has
2171 * been started but isn't done, use the unoptimized
2172 * shader so as not to cause a stall due to compilation.
2173 */
2174 if (iter->is_optimized) {
2175 if (optimized_or_none)
2176 return -1;
2177 memset(&key->opt, 0, sizeof(key->opt));
2178 goto again;
2179 }
2180
2181 util_queue_fence_wait(&iter->ready);
2182 }
2183
2184 if (iter->compilation_failed) {
2185 return -1; /* skip the draw call */
2186 }
2187
2188 state->current = iter;
2189 return 0;
2190 }
2191 }
2192
2193 /* Build a new shader. */
2194 shader = CALLOC_STRUCT(si_shader);
2195 if (!shader) {
2196 simple_mtx_unlock(&sel->mutex);
2197 return -ENOMEM;
2198 }
2199
2200 util_queue_fence_init(&shader->ready);
2201
2202 shader->selector = sel;
2203 shader->key = *key;
2204 shader->compiler_ctx_state = *compiler_state;
2205
2206 /* If this is a merged shader, get the first shader's selector. */
2207 if (sscreen->info.chip_class >= GFX9) {
2208 if (sel->info.stage == MESA_SHADER_TESS_CTRL)
2209 previous_stage_sel = key->part.tcs.ls;
2210 else if (sel->info.stage == MESA_SHADER_GEOMETRY)
2211 previous_stage_sel = key->part.gs.es;
2212
2213 /* We need to wait for the previous shader. */
2214 if (previous_stage_sel && thread_index < 0)
2215 util_queue_fence_wait(&previous_stage_sel->ready);
2216 }
2217
2218 bool is_pure_monolithic =
2219 sscreen->use_monolithic_shaders || memcmp(&key->mono, &zeroed.mono, sizeof(key->mono)) != 0;
2220
2221 /* Compile the main shader part if it doesn't exist. This can happen
2222 * if the initial guess was wrong.
2223 *
2224 * The prim discard CS doesn't need the main shader part.
2225 */
2226 if (!is_pure_monolithic && !key->opt.vs_as_prim_discard_cs) {
2227 bool ok = true;
2228
2229 /* Make sure the main shader part is present. This is needed
2230 * for shaders that can be compiled as VS, LS, or ES, and only
2231 * one of them is compiled at creation.
2232 *
2233 * It is also needed for GS, which can be compiled as non-NGG
2234 * and NGG.
2235 *
2236 * For merged shaders, check that the starting shader's main
2237 * part is present.
2238 */
2239 if (previous_stage_sel) {
2240 struct si_shader_key shader1_key = zeroed;
2241
2242 if (sel->info.stage == MESA_SHADER_TESS_CTRL) {
2243 shader1_key.as_ls = 1;
2244 } else if (sel->info.stage == MESA_SHADER_GEOMETRY) {
2245 shader1_key.as_es = 1;
2246 shader1_key.as_ngg = key->as_ngg; /* for Wave32 vs Wave64 */
2247 } else {
2248 assert(0);
2249 }
2250
2251 simple_mtx_lock(&previous_stage_sel->mutex);
2252 ok = si_check_missing_main_part(sscreen, previous_stage_sel, compiler_state, &shader1_key);
2253 simple_mtx_unlock(&previous_stage_sel->mutex);
2254 }
2255
2256 if (ok) {
2257 ok = si_check_missing_main_part(sscreen, sel, compiler_state, key);
2258 }
2259
2260 if (!ok) {
2261 FREE(shader);
2262 simple_mtx_unlock(&sel->mutex);
2263 return -ENOMEM; /* skip the draw call */
2264 }
2265 }
2266
2267 /* Keep the reference to the 1st shader of merged shaders, so that
2268 * Gallium can't destroy it before we destroy the 2nd shader.
2269 *
2270 * Set sctx = NULL, because it's unused if we're not releasing
2271 * the shader, and we don't have any sctx here.
2272 */
2273 si_shader_selector_reference(NULL, &shader->previous_stage_sel, previous_stage_sel);
2274
2275 /* Monolithic-only shaders don't make a distinction between optimized
2276 * and unoptimized. */
2277 shader->is_monolithic =
2278 is_pure_monolithic || memcmp(&key->opt, &zeroed.opt, sizeof(key->opt)) != 0;
2279
2280 /* The prim discard CS is always optimized. */
2281 shader->is_optimized = (!is_pure_monolithic || key->opt.vs_as_prim_discard_cs) &&
2282 memcmp(&key->opt, &zeroed.opt, sizeof(key->opt)) != 0;
2283
2284 /* If it's an optimized shader, compile it asynchronously. */
2285 if (shader->is_optimized && thread_index < 0) {
2286 /* Compile it asynchronously. */
2287 util_queue_add_job(&sscreen->shader_compiler_queue_low_priority, shader, &shader->ready,
2288 si_build_shader_variant_low_priority, NULL, 0);
2289
2290 /* Add only after the ready fence was reset, to guard against a
2291 * race with si_bind_XX_shader. */
2292 if (!sel->last_variant) {
2293 sel->first_variant = shader;
2294 sel->last_variant = shader;
2295 } else {
2296 sel->last_variant->next_variant = shader;
2297 sel->last_variant = shader;
2298 }
2299
2300 /* Use the default (unoptimized) shader for now. */
2301 memset(&key->opt, 0, sizeof(key->opt));
2302 simple_mtx_unlock(&sel->mutex);
2303
2304 if (sscreen->options.sync_compile)
2305 util_queue_fence_wait(&shader->ready);
2306
2307 if (optimized_or_none)
2308 return -1;
2309 goto again;
2310 }
2311
2312 /* Reset the fence before adding to the variant list. */
2313 util_queue_fence_reset(&shader->ready);
2314
2315 if (!sel->last_variant) {
2316 sel->first_variant = shader;
2317 sel->last_variant = shader;
2318 } else {
2319 sel->last_variant->next_variant = shader;
2320 sel->last_variant = shader;
2321 }
2322
2323 simple_mtx_unlock(&sel->mutex);
2324
2325 assert(!shader->is_optimized);
2326 si_build_shader_variant(shader, thread_index, false);
2327
2328 util_queue_fence_signal(&shader->ready);
2329
2330 if (!shader->compilation_failed)
2331 state->current = shader;
2332
2333 return shader->compilation_failed ? -1 : 0;
2334 }
2335
2336 static int si_shader_select(struct pipe_context *ctx, struct si_shader_ctx_state *state,
2337 union si_vgt_stages_key stages_key,
2338 struct si_compiler_ctx_state *compiler_state)
2339 {
2340 struct si_context *sctx = (struct si_context *)ctx;
2341 struct si_shader_key key;
2342
2343 si_shader_selector_key(ctx, state->cso, stages_key, &key);
2344 return si_shader_select_with_key(sctx->screen, state, compiler_state, &key, -1, false);
2345 }
2346
2347 static void si_parse_next_shader_property(const struct si_shader_info *info, bool streamout,
2348 struct si_shader_key *key)
2349 {
2350 gl_shader_stage next_shader = info->base.next_stage;
2351
2352 switch (info->stage) {
2353 case MESA_SHADER_VERTEX:
2354 switch (next_shader) {
2355 case MESA_SHADER_GEOMETRY:
2356 key->as_es = 1;
2357 break;
2358 case MESA_SHADER_TESS_CTRL:
2359 case MESA_SHADER_TESS_EVAL:
2360 key->as_ls = 1;
2361 break;
2362 default:
2363 /* If POSITION isn't written, it can only be a HW VS
2364 * if streamout is used. If streamout isn't used,
2365 * assume that it's a HW LS. (the next shader is TCS)
2366 * This heuristic is needed for separate shader objects.
2367 */
2368 if (!info->writes_position && !streamout)
2369 key->as_ls = 1;
2370 }
2371 break;
2372
2373 case MESA_SHADER_TESS_EVAL:
2374 if (next_shader == MESA_SHADER_GEOMETRY || !info->writes_position)
2375 key->as_es = 1;
2376 break;
2377
2378 default:;
2379 }
2380 }
2381
2382 /**
2383 * Compile the main shader part or the monolithic shader as part of
2384 * si_shader_selector initialization. Since it can be done asynchronously,
2385 * there is no way to report compile failures to applications.
2386 */
2387 static void si_init_shader_selector_async(void *job, int thread_index)
2388 {
2389 struct si_shader_selector *sel = (struct si_shader_selector *)job;
2390 struct si_screen *sscreen = sel->screen;
2391 struct ac_llvm_compiler *compiler;
2392 struct pipe_debug_callback *debug = &sel->compiler_ctx_state.debug;
2393
2394 assert(!debug->debug_message || debug->async);
2395 assert(thread_index >= 0);
2396 assert(thread_index < ARRAY_SIZE(sscreen->compiler));
2397 compiler = &sscreen->compiler[thread_index];
2398
2399 if (!compiler->passes)
2400 si_init_compiler(sscreen, compiler);
2401
2402 /* Serialize NIR to save memory. Monolithic shader variants
2403 * have to deserialize NIR before compilation.
2404 */
2405 if (sel->nir) {
2406 struct blob blob;
2407 size_t size;
2408
2409 blob_init(&blob);
2410 /* true = remove optional debugging data to increase
2411 * the likehood of getting more shader cache hits.
2412 * It also drops variable names, so we'll save more memory.
2413 */
2414 nir_serialize(&blob, sel->nir, true);
2415 blob_finish_get_buffer(&blob, &sel->nir_binary, &size);
2416 sel->nir_size = size;
2417 }
2418
2419 /* Compile the main shader part for use with a prolog and/or epilog.
2420 * If this fails, the driver will try to compile a monolithic shader
2421 * on demand.
2422 */
2423 if (!sscreen->use_monolithic_shaders) {
2424 struct si_shader *shader = CALLOC_STRUCT(si_shader);
2425 unsigned char ir_sha1_cache_key[20];
2426
2427 if (!shader) {
2428 fprintf(stderr, "radeonsi: can't allocate a main shader part\n");
2429 return;
2430 }
2431
2432 /* We can leave the fence signaled because use of the default
2433 * main part is guarded by the selector's ready fence. */
2434 util_queue_fence_init(&shader->ready);
2435
2436 shader->selector = sel;
2437 shader->is_monolithic = false;
2438 si_parse_next_shader_property(&sel->info, sel->so.num_outputs != 0, &shader->key);
2439
2440 if (sscreen->use_ngg && (!sel->so.num_outputs || sscreen->use_ngg_streamout) &&
2441 ((sel->info.stage == MESA_SHADER_VERTEX && !shader->key.as_ls) ||
2442 sel->info.stage == MESA_SHADER_TESS_EVAL || sel->info.stage == MESA_SHADER_GEOMETRY))
2443 shader->key.as_ngg = 1;
2444
2445 if (sel->nir) {
2446 si_get_ir_cache_key(sel, shader->key.as_ngg, shader->key.as_es, ir_sha1_cache_key);
2447 }
2448
2449 /* Try to load the shader from the shader cache. */
2450 simple_mtx_lock(&sscreen->shader_cache_mutex);
2451
2452 if (si_shader_cache_load_shader(sscreen, ir_sha1_cache_key, shader)) {
2453 simple_mtx_unlock(&sscreen->shader_cache_mutex);
2454 si_shader_dump_stats_for_shader_db(sscreen, shader, debug);
2455 } else {
2456 simple_mtx_unlock(&sscreen->shader_cache_mutex);
2457
2458 /* Compile the shader if it hasn't been loaded from the cache. */
2459 if (!si_compile_shader(sscreen, compiler, shader, debug)) {
2460 FREE(shader);
2461 fprintf(stderr, "radeonsi: can't compile a main shader part\n");
2462 return;
2463 }
2464
2465 simple_mtx_lock(&sscreen->shader_cache_mutex);
2466 si_shader_cache_insert_shader(sscreen, ir_sha1_cache_key, shader, true);
2467 simple_mtx_unlock(&sscreen->shader_cache_mutex);
2468 }
2469
2470 *si_get_main_shader_part(sel, &shader->key) = shader;
2471
2472 /* Unset "outputs_written" flags for outputs converted to
2473 * DEFAULT_VAL, so that later inter-shader optimizations don't
2474 * try to eliminate outputs that don't exist in the final
2475 * shader.
2476 *
2477 * This is only done if non-monolithic shaders are enabled.
2478 */
2479 if ((sel->info.stage == MESA_SHADER_VERTEX || sel->info.stage == MESA_SHADER_TESS_EVAL) &&
2480 !shader->key.as_ls && !shader->key.as_es) {
2481 unsigned i;
2482
2483 for (i = 0; i < sel->info.num_outputs; i++) {
2484 unsigned offset = shader->info.vs_output_param_offset[i];
2485
2486 if (offset <= AC_EXP_PARAM_OFFSET_31)
2487 continue;
2488
2489 unsigned semantic = sel->info.output_semantic[i];
2490 unsigned id;
2491
2492 if (semantic < VARYING_SLOT_MAX &&
2493 semantic != VARYING_SLOT_POS &&
2494 semantic != VARYING_SLOT_PSIZ &&
2495 semantic != VARYING_SLOT_CLIP_VERTEX &&
2496 semantic != VARYING_SLOT_EDGE) {
2497 id = si_shader_io_get_unique_index(semantic, true);
2498 sel->outputs_written_before_ps &= ~(1ull << id);
2499 }
2500 }
2501 }
2502 }
2503
2504 /* The GS copy shader is always pre-compiled. */
2505 if (sel->info.stage == MESA_SHADER_GEOMETRY &&
2506 (!sscreen->use_ngg || !sscreen->use_ngg_streamout || /* also for PRIMITIVES_GENERATED */
2507 sel->tess_turns_off_ngg)) {
2508 sel->gs_copy_shader = si_generate_gs_copy_shader(sscreen, compiler, sel, debug);
2509 if (!sel->gs_copy_shader) {
2510 fprintf(stderr, "radeonsi: can't create GS copy shader\n");
2511 return;
2512 }
2513
2514 si_shader_vs(sscreen, sel->gs_copy_shader, sel);
2515 }
2516
2517 /* Free NIR. We only keep serialized NIR after this point. */
2518 if (sel->nir) {
2519 ralloc_free(sel->nir);
2520 sel->nir = NULL;
2521 }
2522 }
2523
2524 void si_schedule_initial_compile(struct si_context *sctx, gl_shader_stage stage,
2525 struct util_queue_fence *ready_fence,
2526 struct si_compiler_ctx_state *compiler_ctx_state, void *job,
2527 util_queue_execute_func execute)
2528 {
2529 util_queue_fence_init(ready_fence);
2530
2531 struct util_async_debug_callback async_debug;
2532 bool debug = (sctx->debug.debug_message && !sctx->debug.async) || sctx->is_debug ||
2533 si_can_dump_shader(sctx->screen, stage);
2534
2535 if (debug) {
2536 u_async_debug_init(&async_debug);
2537 compiler_ctx_state->debug = async_debug.base;
2538 }
2539
2540 util_queue_add_job(&sctx->screen->shader_compiler_queue, job, ready_fence, execute, NULL, 0);
2541
2542 if (debug) {
2543 util_queue_fence_wait(ready_fence);
2544 u_async_debug_drain(&async_debug, &sctx->debug);
2545 u_async_debug_cleanup(&async_debug);
2546 }
2547
2548 if (sctx->screen->options.sync_compile)
2549 util_queue_fence_wait(ready_fence);
2550 }
2551
2552 /* Return descriptor slot usage masks from the given shader info. */
2553 void si_get_active_slot_masks(const struct si_shader_info *info, uint64_t *const_and_shader_buffers,
2554 uint64_t *samplers_and_images)
2555 {
2556 unsigned start, num_shaderbufs, num_constbufs, num_images, num_msaa_images, num_samplers;
2557
2558 num_shaderbufs = info->base.num_ssbos;
2559 num_constbufs = info->base.num_ubos;
2560 /* two 8-byte images share one 16-byte slot */
2561 num_images = align(info->base.num_images, 2);
2562 num_msaa_images = align(util_last_bit(info->base.msaa_images), 2);
2563 num_samplers = util_last_bit(info->base.textures_used);
2564
2565 /* The layout is: sb[last] ... sb[0], cb[0] ... cb[last] */
2566 start = si_get_shaderbuf_slot(num_shaderbufs - 1);
2567 *const_and_shader_buffers = u_bit_consecutive64(start, num_shaderbufs + num_constbufs);
2568
2569 /* The layout is:
2570 * - fmask[last] ... fmask[0] go to [15-last .. 15]
2571 * - image[last] ... image[0] go to [31-last .. 31]
2572 * - sampler[0] ... sampler[last] go to [32 .. 32+last*2]
2573 *
2574 * FMASKs for images are placed separately, because MSAA images are rare,
2575 * and so we can benefit from a better cache hit rate if we keep image
2576 * descriptors together.
2577 */
2578 if (num_msaa_images)
2579 num_images = SI_NUM_IMAGES + num_msaa_images; /* add FMASK descriptors */
2580
2581 start = si_get_image_slot(num_images - 1) / 2;
2582 *samplers_and_images = u_bit_consecutive64(start, num_images / 2 + num_samplers);
2583 }
2584
2585 static void *si_create_shader_selector(struct pipe_context *ctx,
2586 const struct pipe_shader_state *state)
2587 {
2588 struct si_screen *sscreen = (struct si_screen *)ctx->screen;
2589 struct si_context *sctx = (struct si_context *)ctx;
2590 struct si_shader_selector *sel = CALLOC_STRUCT(si_shader_selector);
2591 int i;
2592
2593 if (!sel)
2594 return NULL;
2595
2596 sel->screen = sscreen;
2597 sel->compiler_ctx_state.debug = sctx->debug;
2598 sel->compiler_ctx_state.is_debug_context = sctx->is_debug;
2599
2600 sel->so = state->stream_output;
2601
2602 if (state->type == PIPE_SHADER_IR_TGSI) {
2603 sel->nir = tgsi_to_nir(state->tokens, ctx->screen, true);
2604 } else {
2605 assert(state->type == PIPE_SHADER_IR_NIR);
2606 sel->nir = state->ir.nir;
2607 }
2608
2609 si_nir_scan_shader(sel->nir, &sel->info);
2610
2611 const enum pipe_shader_type type = pipe_shader_type_from_mesa(sel->info.stage);
2612 sel->const_and_shader_buf_descriptors_index =
2613 si_const_and_shader_buffer_descriptors_idx(type);
2614 sel->sampler_and_images_descriptors_index =
2615 si_sampler_and_image_descriptors_idx(type);
2616
2617 p_atomic_inc(&sscreen->num_shaders_created);
2618 si_get_active_slot_masks(&sel->info, &sel->active_const_and_shader_buffers,
2619 &sel->active_samplers_and_images);
2620
2621 /* Record which streamout buffers are enabled. */
2622 for (i = 0; i < sel->so.num_outputs; i++) {
2623 sel->enabled_streamout_buffer_mask |= (1 << sel->so.output[i].output_buffer)
2624 << (sel->so.output[i].stream * 4);
2625 }
2626
2627 sel->num_vs_inputs =
2628 sel->info.stage == MESA_SHADER_VERTEX && !sel->info.base.vs.blit_sgprs_amd
2629 ? sel->info.num_inputs
2630 : 0;
2631 sel->num_vbos_in_user_sgprs = MIN2(sel->num_vs_inputs, sscreen->num_vbos_in_user_sgprs);
2632
2633 /* The prolog is a no-op if there are no inputs. */
2634 sel->vs_needs_prolog = sel->info.stage == MESA_SHADER_VERTEX && sel->info.num_inputs &&
2635 !sel->info.base.vs.blit_sgprs_amd;
2636
2637 sel->prim_discard_cs_allowed =
2638 sel->info.stage == MESA_SHADER_VERTEX && !sel->info.uses_bindless_images &&
2639 !sel->info.uses_bindless_samplers && !sel->info.base.writes_memory &&
2640 !sel->info.writes_viewport_index &&
2641 !sel->info.base.vs.window_space_position && !sel->so.num_outputs;
2642
2643 switch (sel->info.stage) {
2644 case MESA_SHADER_GEOMETRY:
2645 /* Only possibilities: POINTS, LINE_STRIP, TRIANGLES */
2646 sel->rast_prim = sel->info.base.gs.output_primitive;
2647 if (util_rast_prim_is_triangles(sel->rast_prim))
2648 sel->rast_prim = PIPE_PRIM_TRIANGLES;
2649
2650 sel->gsvs_vertex_size = sel->info.num_outputs * 16;
2651 sel->max_gsvs_emit_size = sel->gsvs_vertex_size * sel->info.base.gs.vertices_out;
2652 sel->gs_input_verts_per_prim =
2653 u_vertices_per_prim(sel->info.base.gs.input_primitive);
2654
2655 /* EN_MAX_VERT_OUT_PER_GS_INSTANCE does not work with tesselation so
2656 * we can't split workgroups. Disable ngg if any of the following conditions is true:
2657 * - num_invocations * gs.vertices_out > 256
2658 * - LDS usage is too high
2659 */
2660 sel->tess_turns_off_ngg = sscreen->info.chip_class >= GFX10 &&
2661 (sel->info.base.gs.invocations * sel->info.base.gs.vertices_out > 256 ||
2662 sel->info.base.gs.invocations * sel->info.base.gs.vertices_out *
2663 (sel->info.num_outputs * 4 + 1) > 6500 /* max dw per GS primitive */);
2664 break;
2665
2666 case MESA_SHADER_TESS_CTRL:
2667 /* Always reserve space for these. */
2668 sel->patch_outputs_written |=
2669 (1ull << si_shader_io_get_unique_index_patch(VARYING_SLOT_TESS_LEVEL_INNER)) |
2670 (1ull << si_shader_io_get_unique_index_patch(VARYING_SLOT_TESS_LEVEL_OUTER));
2671 /* fall through */
2672 case MESA_SHADER_VERTEX:
2673 case MESA_SHADER_TESS_EVAL:
2674 for (i = 0; i < sel->info.num_outputs; i++) {
2675 unsigned semantic = sel->info.output_semantic[i];
2676
2677 if (semantic == VARYING_SLOT_TESS_LEVEL_INNER ||
2678 semantic == VARYING_SLOT_TESS_LEVEL_OUTER ||
2679 (semantic >= VARYING_SLOT_PATCH0 && semantic < VARYING_SLOT_TESS_MAX)) {
2680 sel->patch_outputs_written |= 1ull << si_shader_io_get_unique_index_patch(semantic);
2681 } else if (semantic < VARYING_SLOT_MAX &&
2682 semantic != VARYING_SLOT_EDGE) {
2683 sel->outputs_written |= 1ull << si_shader_io_get_unique_index(semantic, false);
2684 sel->outputs_written_before_ps |= 1ull
2685 << si_shader_io_get_unique_index(semantic, true);
2686 }
2687 }
2688 sel->esgs_itemsize = util_last_bit64(sel->outputs_written) * 16;
2689 sel->lshs_vertex_stride = sel->esgs_itemsize;
2690
2691 /* Add 1 dword to reduce LDS bank conflicts, so that each vertex
2692 * will start on a different bank. (except for the maximum 32*16).
2693 */
2694 if (sel->lshs_vertex_stride < 32 * 16)
2695 sel->lshs_vertex_stride += 4;
2696
2697 /* For the ESGS ring in LDS, add 1 dword to reduce LDS bank
2698 * conflicts, i.e. each vertex will start at a different bank.
2699 */
2700 if (sctx->chip_class >= GFX9)
2701 sel->esgs_itemsize += 4;
2702
2703 assert(((sel->esgs_itemsize / 4) & C_028AAC_ITEMSIZE) == 0);
2704
2705 /* Only for TES: */
2706 if (sel->info.stage == MESA_SHADER_TESS_EVAL) {
2707 if (sel->info.base.tess.point_mode)
2708 sel->rast_prim = PIPE_PRIM_POINTS;
2709 else if (sel->info.base.tess.primitive_mode == GL_LINES)
2710 sel->rast_prim = PIPE_PRIM_LINE_STRIP;
2711 else
2712 sel->rast_prim = PIPE_PRIM_TRIANGLES;
2713 } else {
2714 sel->rast_prim = PIPE_PRIM_TRIANGLES;
2715 }
2716 break;
2717
2718 case MESA_SHADER_FRAGMENT:
2719 for (i = 0; i < sel->info.num_inputs; i++) {
2720 unsigned semantic = sel->info.input_semantic[i];
2721
2722 if (semantic < VARYING_SLOT_MAX &&
2723 semantic != VARYING_SLOT_PNTC) {
2724 sel->inputs_read |= 1ull << si_shader_io_get_unique_index(semantic, true);
2725 }
2726 }
2727
2728 for (i = 0; i < 8; i++)
2729 if (sel->info.colors_written & (1 << i))
2730 sel->colors_written_4bit |= 0xf << (4 * i);
2731
2732 for (i = 0; i < sel->info.num_inputs; i++) {
2733 if (sel->info.input_semantic[i] == VARYING_SLOT_COL0)
2734 sel->color_attr_index[0] = i;
2735 else if (sel->info.input_semantic[i] == VARYING_SLOT_COL1)
2736 sel->color_attr_index[1] = i;
2737 }
2738 break;
2739 default:;
2740 }
2741
2742 sel->ngg_culling_allowed =
2743 sscreen->info.chip_class >= GFX10 &&
2744 sscreen->info.has_dedicated_vram &&
2745 sscreen->use_ngg_culling &&
2746 (sel->info.stage == MESA_SHADER_VERTEX ||
2747 (sel->info.stage == MESA_SHADER_TESS_EVAL &&
2748 (sscreen->always_use_ngg_culling_all ||
2749 sscreen->always_use_ngg_culling_tess))) &&
2750 sel->info.writes_position &&
2751 !sel->info.writes_viewport_index && /* cull only against viewport 0 */
2752 !sel->info.base.writes_memory && !sel->so.num_outputs &&
2753 (sel->info.stage != MESA_SHADER_VERTEX ||
2754 (!sel->info.base.vs.blit_sgprs_amd &&
2755 !sel->info.base.vs.window_space_position));
2756
2757 /* PA_CL_VS_OUT_CNTL */
2758 if (sctx->chip_class <= GFX9)
2759 sel->pa_cl_vs_out_cntl = si_get_vs_out_cntl(sel, NULL, false);
2760
2761 sel->clipdist_mask = sel->info.writes_clipvertex ? SIX_BITS :
2762 u_bit_consecutive(0, sel->info.base.clip_distance_array_size);
2763 sel->culldist_mask = u_bit_consecutive(0, sel->info.base.cull_distance_array_size) <<
2764 sel->info.base.clip_distance_array_size;
2765
2766 /* DB_SHADER_CONTROL */
2767 sel->db_shader_control = S_02880C_Z_EXPORT_ENABLE(sel->info.writes_z) |
2768 S_02880C_STENCIL_TEST_VAL_EXPORT_ENABLE(sel->info.writes_stencil) |
2769 S_02880C_MASK_EXPORT_ENABLE(sel->info.writes_samplemask) |
2770 S_02880C_KILL_ENABLE(sel->info.base.fs.uses_discard);
2771
2772 if (sel->info.stage == MESA_SHADER_FRAGMENT) {
2773 switch (sel->info.base.fs.depth_layout) {
2774 case FRAG_DEPTH_LAYOUT_GREATER:
2775 sel->db_shader_control |= S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_GREATER_THAN_Z);
2776 break;
2777 case FRAG_DEPTH_LAYOUT_LESS:
2778 sel->db_shader_control |= S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_LESS_THAN_Z);
2779 break;
2780 default:;
2781 }
2782
2783 /* Z_ORDER, EXEC_ON_HIER_FAIL and EXEC_ON_NOOP should be set as following:
2784 *
2785 * | early Z/S | writes_mem | allow_ReZ? | Z_ORDER | EXEC_ON_HIER_FAIL | EXEC_ON_NOOP
2786 * --|-----------|------------|------------|--------------------|-------------------|-------------
2787 * 1a| false | false | true | EarlyZ_Then_ReZ | 0 | 0
2788 * 1b| false | false | false | EarlyZ_Then_LateZ | 0 | 0
2789 * 2 | false | true | n/a | LateZ | 1 | 0
2790 * 3 | true | false | n/a | EarlyZ_Then_LateZ | 0 | 0
2791 * 4 | true | true | n/a | EarlyZ_Then_LateZ | 0 | 1
2792 *
2793 * In cases 3 and 4, HW will force Z_ORDER to EarlyZ regardless of what's set in the register.
2794 * In case 2, NOOP_CULL is a don't care field. In case 2, 3 and 4, ReZ doesn't make sense.
2795 *
2796 * Don't use ReZ without profiling !!!
2797 *
2798 * ReZ decreases performance by 15% in DiRT: Showdown on Ultra settings, which has pretty complex
2799 * shaders.
2800 */
2801 if (sel->info.base.fs.early_fragment_tests) {
2802 /* Cases 3, 4. */
2803 sel->db_shader_control |= S_02880C_DEPTH_BEFORE_SHADER(1) |
2804 S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z) |
2805 S_02880C_EXEC_ON_NOOP(sel->info.base.writes_memory);
2806 } else if (sel->info.base.writes_memory) {
2807 /* Case 2. */
2808 sel->db_shader_control |= S_02880C_Z_ORDER(V_02880C_LATE_Z) | S_02880C_EXEC_ON_HIER_FAIL(1);
2809 } else {
2810 /* Case 1. */
2811 sel->db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
2812 }
2813
2814 if (sel->info.base.fs.post_depth_coverage)
2815 sel->db_shader_control |= S_02880C_PRE_SHADER_DEPTH_COVERAGE_ENABLE(1);
2816 }
2817
2818 (void)simple_mtx_init(&sel->mutex, mtx_plain);
2819
2820 si_schedule_initial_compile(sctx, sel->info.stage, &sel->ready, &sel->compiler_ctx_state,
2821 sel, si_init_shader_selector_async);
2822 return sel;
2823 }
2824
2825 static void *si_create_shader(struct pipe_context *ctx, const struct pipe_shader_state *state)
2826 {
2827 struct si_context *sctx = (struct si_context *)ctx;
2828 struct si_screen *sscreen = (struct si_screen *)ctx->screen;
2829 bool cache_hit;
2830 struct si_shader_selector *sel = (struct si_shader_selector *)util_live_shader_cache_get(
2831 ctx, &sscreen->live_shader_cache, state, &cache_hit);
2832
2833 if (sel && cache_hit && sctx->debug.debug_message) {
2834 if (sel->main_shader_part)
2835 si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part, &sctx->debug);
2836 if (sel->main_shader_part_ls)
2837 si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ls, &sctx->debug);
2838 if (sel->main_shader_part_es)
2839 si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_es, &sctx->debug);
2840 if (sel->main_shader_part_ngg)
2841 si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ngg, &sctx->debug);
2842 if (sel->main_shader_part_ngg_es)
2843 si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ngg_es, &sctx->debug);
2844 }
2845 return sel;
2846 }
2847
2848 static void si_update_streamout_state(struct si_context *sctx)
2849 {
2850 struct si_shader_selector *shader_with_so = si_get_vs(sctx)->cso;
2851
2852 if (!shader_with_so)
2853 return;
2854
2855 sctx->streamout.enabled_stream_buffers_mask = shader_with_so->enabled_streamout_buffer_mask;
2856 sctx->streamout.stride_in_dw = shader_with_so->so.stride;
2857 }
2858
2859 static void si_update_clip_regs(struct si_context *sctx, struct si_shader_selector *old_hw_vs,
2860 struct si_shader *old_hw_vs_variant,
2861 struct si_shader_selector *next_hw_vs,
2862 struct si_shader *next_hw_vs_variant)
2863 {
2864 if (next_hw_vs &&
2865 (!old_hw_vs ||
2866 (old_hw_vs->info.stage == MESA_SHADER_VERTEX && old_hw_vs->info.base.vs.window_space_position) !=
2867 (next_hw_vs->info.stage == MESA_SHADER_VERTEX && next_hw_vs->info.base.vs.window_space_position) ||
2868 old_hw_vs->pa_cl_vs_out_cntl != next_hw_vs->pa_cl_vs_out_cntl ||
2869 old_hw_vs->clipdist_mask != next_hw_vs->clipdist_mask ||
2870 old_hw_vs->culldist_mask != next_hw_vs->culldist_mask || !old_hw_vs_variant ||
2871 !next_hw_vs_variant ||
2872 old_hw_vs_variant->key.opt.clip_disable != next_hw_vs_variant->key.opt.clip_disable))
2873 si_mark_atom_dirty(sctx, &sctx->atoms.s.clip_regs);
2874 }
2875
2876 static void si_update_common_shader_state(struct si_context *sctx)
2877 {
2878 sctx->uses_bindless_samplers = si_shader_uses_bindless_samplers(sctx->vs_shader.cso) ||
2879 si_shader_uses_bindless_samplers(sctx->gs_shader.cso) ||
2880 si_shader_uses_bindless_samplers(sctx->ps_shader.cso) ||
2881 si_shader_uses_bindless_samplers(sctx->tcs_shader.cso) ||
2882 si_shader_uses_bindless_samplers(sctx->tes_shader.cso);
2883 sctx->uses_bindless_images = si_shader_uses_bindless_images(sctx->vs_shader.cso) ||
2884 si_shader_uses_bindless_images(sctx->gs_shader.cso) ||
2885 si_shader_uses_bindless_images(sctx->ps_shader.cso) ||
2886 si_shader_uses_bindless_images(sctx->tcs_shader.cso) ||
2887 si_shader_uses_bindless_images(sctx->tes_shader.cso);
2888 sctx->do_update_shaders = true;
2889 }
2890
2891 static void si_bind_vs_shader(struct pipe_context *ctx, void *state)
2892 {
2893 struct si_context *sctx = (struct si_context *)ctx;
2894 struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
2895 struct si_shader *old_hw_vs_variant = si_get_vs_state(sctx);
2896 struct si_shader_selector *sel = state;
2897
2898 if (sctx->vs_shader.cso == sel)
2899 return;
2900
2901 sctx->vs_shader.cso = sel;
2902 sctx->vs_shader.current = sel ? sel->first_variant : NULL;
2903 sctx->num_vs_blit_sgprs = sel ? sel->info.base.vs.blit_sgprs_amd : 0;
2904
2905 if (si_update_ngg(sctx))
2906 si_shader_change_notify(sctx);
2907
2908 si_update_common_shader_state(sctx);
2909 si_update_vs_viewport_state(sctx);
2910 si_set_active_descriptors_for_shader(sctx, sel);
2911 si_update_streamout_state(sctx);
2912 si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
2913 si_get_vs_state(sctx));
2914 }
2915
2916 static void si_update_tess_uses_prim_id(struct si_context *sctx)
2917 {
2918 sctx->ia_multi_vgt_param_key.u.tess_uses_prim_id =
2919 (sctx->tes_shader.cso && sctx->tes_shader.cso->info.uses_primid) ||
2920 (sctx->tcs_shader.cso && sctx->tcs_shader.cso->info.uses_primid) ||
2921 (sctx->gs_shader.cso && sctx->gs_shader.cso->info.uses_primid) ||
2922 (sctx->ps_shader.cso && !sctx->gs_shader.cso && sctx->ps_shader.cso->info.uses_primid);
2923 }
2924
2925 bool si_update_ngg(struct si_context *sctx)
2926 {
2927 if (!sctx->screen->use_ngg) {
2928 assert(!sctx->ngg);
2929 return false;
2930 }
2931
2932 bool new_ngg = true;
2933
2934 if (sctx->gs_shader.cso && sctx->tes_shader.cso && sctx->gs_shader.cso->tess_turns_off_ngg) {
2935 new_ngg = false;
2936 } else if (!sctx->screen->use_ngg_streamout) {
2937 struct si_shader_selector *last = si_get_vs(sctx)->cso;
2938
2939 if ((last && last->so.num_outputs) || sctx->streamout.prims_gen_query_enabled)
2940 new_ngg = false;
2941 }
2942
2943 if (new_ngg != sctx->ngg) {
2944 /* Transitioning from NGG to legacy GS requires VGT_FLUSH on Navi10-14.
2945 * VGT_FLUSH is also emitted at the beginning of IBs when legacy GS ring
2946 * pointers are set.
2947 */
2948 if (sctx->chip_class == GFX10 && !new_ngg)
2949 sctx->flags |= SI_CONTEXT_VGT_FLUSH;
2950
2951 sctx->ngg = new_ngg;
2952 sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
2953 return true;
2954 }
2955 return false;
2956 }
2957
2958 static void si_bind_gs_shader(struct pipe_context *ctx, void *state)
2959 {
2960 struct si_context *sctx = (struct si_context *)ctx;
2961 struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
2962 struct si_shader *old_hw_vs_variant = si_get_vs_state(sctx);
2963 struct si_shader_selector *sel = state;
2964 bool enable_changed = !!sctx->gs_shader.cso != !!sel;
2965 bool ngg_changed;
2966
2967 if (sctx->gs_shader.cso == sel)
2968 return;
2969
2970 sctx->gs_shader.cso = sel;
2971 sctx->gs_shader.current = sel ? sel->first_variant : NULL;
2972 sctx->ia_multi_vgt_param_key.u.uses_gs = sel != NULL;
2973
2974 si_update_common_shader_state(sctx);
2975 sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
2976
2977 ngg_changed = si_update_ngg(sctx);
2978 if (ngg_changed || enable_changed)
2979 si_shader_change_notify(sctx);
2980 if (enable_changed) {
2981 if (sctx->ia_multi_vgt_param_key.u.uses_tess)
2982 si_update_tess_uses_prim_id(sctx);
2983 }
2984 si_update_vs_viewport_state(sctx);
2985 si_set_active_descriptors_for_shader(sctx, sel);
2986 si_update_streamout_state(sctx);
2987 si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
2988 si_get_vs_state(sctx));
2989 }
2990
2991 static void si_bind_tcs_shader(struct pipe_context *ctx, void *state)
2992 {
2993 struct si_context *sctx = (struct si_context *)ctx;
2994 struct si_shader_selector *sel = state;
2995 bool enable_changed = !!sctx->tcs_shader.cso != !!sel;
2996
2997 if (sctx->tcs_shader.cso == sel)
2998 return;
2999
3000 sctx->tcs_shader.cso = sel;
3001 sctx->tcs_shader.current = sel ? sel->first_variant : NULL;
3002 si_update_tess_uses_prim_id(sctx);
3003
3004 si_update_common_shader_state(sctx);
3005
3006 if (enable_changed)
3007 sctx->last_tcs = NULL; /* invalidate derived tess state */
3008
3009 si_set_active_descriptors_for_shader(sctx, sel);
3010 }
3011
3012 static void si_bind_tes_shader(struct pipe_context *ctx, void *state)
3013 {
3014 struct si_context *sctx = (struct si_context *)ctx;
3015 struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
3016 struct si_shader *old_hw_vs_variant = si_get_vs_state(sctx);
3017 struct si_shader_selector *sel = state;
3018 bool enable_changed = !!sctx->tes_shader.cso != !!sel;
3019
3020 if (sctx->tes_shader.cso == sel)
3021 return;
3022
3023 sctx->tes_shader.cso = sel;
3024 sctx->tes_shader.current = sel ? sel->first_variant : NULL;
3025 sctx->ia_multi_vgt_param_key.u.uses_tess = sel != NULL;
3026 si_update_tess_uses_prim_id(sctx);
3027
3028 si_update_common_shader_state(sctx);
3029 sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
3030
3031 bool ngg_changed = si_update_ngg(sctx);
3032 if (ngg_changed || enable_changed)
3033 si_shader_change_notify(sctx);
3034 if (enable_changed)
3035 sctx->last_tes_sh_base = -1; /* invalidate derived tess state */
3036 si_update_vs_viewport_state(sctx);
3037 si_set_active_descriptors_for_shader(sctx, sel);
3038 si_update_streamout_state(sctx);
3039 si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
3040 si_get_vs_state(sctx));
3041 }
3042
3043 static void si_bind_ps_shader(struct pipe_context *ctx, void *state)
3044 {
3045 struct si_context *sctx = (struct si_context *)ctx;
3046 struct si_shader_selector *old_sel = sctx->ps_shader.cso;
3047 struct si_shader_selector *sel = state;
3048
3049 /* skip if supplied shader is one already in use */
3050 if (old_sel == sel)
3051 return;
3052
3053 sctx->ps_shader.cso = sel;
3054 sctx->ps_shader.current = sel ? sel->first_variant : NULL;
3055
3056 si_update_common_shader_state(sctx);
3057 if (sel) {
3058 if (sctx->ia_multi_vgt_param_key.u.uses_tess)
3059 si_update_tess_uses_prim_id(sctx);
3060
3061 if (!old_sel || old_sel->info.colors_written != sel->info.colors_written)
3062 si_mark_atom_dirty(sctx, &sctx->atoms.s.cb_render_state);
3063
3064 if (sctx->screen->has_out_of_order_rast &&
3065 (!old_sel || old_sel->info.base.writes_memory != sel->info.base.writes_memory ||
3066 old_sel->info.base.fs.early_fragment_tests !=
3067 sel->info.base.fs.early_fragment_tests))
3068 si_mark_atom_dirty(sctx, &sctx->atoms.s.msaa_config);
3069 }
3070 si_set_active_descriptors_for_shader(sctx, sel);
3071 si_update_ps_colorbuf0_slot(sctx);
3072 }
3073
3074 static void si_delete_shader(struct si_context *sctx, struct si_shader *shader)
3075 {
3076 if (shader->is_optimized) {
3077 util_queue_drop_job(&sctx->screen->shader_compiler_queue_low_priority, &shader->ready);
3078 }
3079
3080 util_queue_fence_destroy(&shader->ready);
3081
3082 if (shader->pm4) {
3083 /* If destroyed shaders were not unbound, the next compiled
3084 * shader variant could get the same pointer address and so
3085 * binding it to the same shader stage would be considered
3086 * a no-op, causing random behavior.
3087 */
3088 switch (shader->selector->info.stage) {
3089 case MESA_SHADER_VERTEX:
3090 if (shader->key.as_ls) {
3091 assert(sctx->chip_class <= GFX8);
3092 si_pm4_delete_state(sctx, ls, shader->pm4);
3093 } else if (shader->key.as_es) {
3094 assert(sctx->chip_class <= GFX8);
3095 si_pm4_delete_state(sctx, es, shader->pm4);
3096 } else if (shader->key.as_ngg) {
3097 si_pm4_delete_state(sctx, gs, shader->pm4);
3098 } else {
3099 si_pm4_delete_state(sctx, vs, shader->pm4);
3100 }
3101 break;
3102 case MESA_SHADER_TESS_CTRL:
3103 si_pm4_delete_state(sctx, hs, shader->pm4);
3104 break;
3105 case MESA_SHADER_TESS_EVAL:
3106 if (shader->key.as_es) {
3107 assert(sctx->chip_class <= GFX8);
3108 si_pm4_delete_state(sctx, es, shader->pm4);
3109 } else if (shader->key.as_ngg) {
3110 si_pm4_delete_state(sctx, gs, shader->pm4);
3111 } else {
3112 si_pm4_delete_state(sctx, vs, shader->pm4);
3113 }
3114 break;
3115 case MESA_SHADER_GEOMETRY:
3116 if (shader->is_gs_copy_shader)
3117 si_pm4_delete_state(sctx, vs, shader->pm4);
3118 else
3119 si_pm4_delete_state(sctx, gs, shader->pm4);
3120 break;
3121 case MESA_SHADER_FRAGMENT:
3122 si_pm4_delete_state(sctx, ps, shader->pm4);
3123 break;
3124 default:;
3125 }
3126 }
3127
3128 si_shader_selector_reference(sctx, &shader->previous_stage_sel, NULL);
3129 si_shader_destroy(shader);
3130 free(shader);
3131 }
3132
3133 static void si_destroy_shader_selector(struct pipe_context *ctx, void *cso)
3134 {
3135 struct si_context *sctx = (struct si_context *)ctx;
3136 struct si_shader_selector *sel = (struct si_shader_selector *)cso;
3137 struct si_shader *p = sel->first_variant, *c;
3138 struct si_shader_ctx_state *current_shader[SI_NUM_SHADERS] = {
3139 [MESA_SHADER_VERTEX] = &sctx->vs_shader,
3140 [MESA_SHADER_TESS_CTRL] = &sctx->tcs_shader,
3141 [MESA_SHADER_TESS_EVAL] = &sctx->tes_shader,
3142 [MESA_SHADER_GEOMETRY] = &sctx->gs_shader,
3143 [MESA_SHADER_FRAGMENT] = &sctx->ps_shader,
3144 };
3145
3146 util_queue_drop_job(&sctx->screen->shader_compiler_queue, &sel->ready);
3147
3148 if (current_shader[sel->info.stage]->cso == sel) {
3149 current_shader[sel->info.stage]->cso = NULL;
3150 current_shader[sel->info.stage]->current = NULL;
3151 }
3152
3153 while (p) {
3154 c = p->next_variant;
3155 si_delete_shader(sctx, p);
3156 p = c;
3157 }
3158
3159 if (sel->main_shader_part)
3160 si_delete_shader(sctx, sel->main_shader_part);
3161 if (sel->main_shader_part_ls)
3162 si_delete_shader(sctx, sel->main_shader_part_ls);
3163 if (sel->main_shader_part_es)
3164 si_delete_shader(sctx, sel->main_shader_part_es);
3165 if (sel->main_shader_part_ngg)
3166 si_delete_shader(sctx, sel->main_shader_part_ngg);
3167 if (sel->gs_copy_shader)
3168 si_delete_shader(sctx, sel->gs_copy_shader);
3169
3170 util_queue_fence_destroy(&sel->ready);
3171 simple_mtx_destroy(&sel->mutex);
3172 ralloc_free(sel->nir);
3173 free(sel->nir_binary);
3174 free(sel);
3175 }
3176
3177 static void si_delete_shader_selector(struct pipe_context *ctx, void *state)
3178 {
3179 struct si_context *sctx = (struct si_context *)ctx;
3180 struct si_shader_selector *sel = (struct si_shader_selector *)state;
3181
3182 si_shader_selector_reference(sctx, &sel, NULL);
3183 }
3184
3185 static unsigned si_get_ps_input_cntl(struct si_context *sctx, struct si_shader *vs,
3186 unsigned semantic, enum glsl_interp_mode interpolate)
3187 {
3188 struct si_shader_info *vsinfo = &vs->selector->info;
3189 unsigned offset, ps_input_cntl = 0;
3190
3191 if (interpolate == INTERP_MODE_FLAT ||
3192 (interpolate == INTERP_MODE_COLOR && sctx->flatshade) ||
3193 semantic == VARYING_SLOT_PRIMITIVE_ID)
3194 ps_input_cntl |= S_028644_FLAT_SHADE(1);
3195
3196 if (semantic == VARYING_SLOT_PNTC ||
3197 (semantic >= VARYING_SLOT_TEX0 && semantic <= VARYING_SLOT_TEX7 &&
3198 sctx->sprite_coord_enable & (1 << (semantic - VARYING_SLOT_TEX0)))) {
3199 ps_input_cntl |= S_028644_PT_SPRITE_TEX(1);
3200 }
3201
3202 int vs_slot = vsinfo->output_semantic_to_slot[semantic];
3203 if (vs_slot >= 0) {
3204 offset = vs->info.vs_output_param_offset[vs_slot];
3205
3206 if (offset <= AC_EXP_PARAM_OFFSET_31) {
3207 /* The input is loaded from parameter memory. */
3208 ps_input_cntl |= S_028644_OFFSET(offset);
3209 } else if (!G_028644_PT_SPRITE_TEX(ps_input_cntl)) {
3210 if (offset == AC_EXP_PARAM_UNDEFINED) {
3211 /* This can happen with depth-only rendering. */
3212 offset = 0;
3213 } else {
3214 /* The input is a DEFAULT_VAL constant. */
3215 assert(offset >= AC_EXP_PARAM_DEFAULT_VAL_0000 &&
3216 offset <= AC_EXP_PARAM_DEFAULT_VAL_1111);
3217 offset -= AC_EXP_PARAM_DEFAULT_VAL_0000;
3218 }
3219
3220 ps_input_cntl = S_028644_OFFSET(0x20) | S_028644_DEFAULT_VAL(offset);
3221 }
3222 } else {
3223 /* VS output not found. */
3224 if (semantic == VARYING_SLOT_PRIMITIVE_ID) {
3225 /* PrimID is written after the last output when HW VS is used. */
3226 ps_input_cntl |= S_028644_OFFSET(vs->info.vs_output_param_offset[vsinfo->num_outputs]);
3227 } else if (!G_028644_PT_SPRITE_TEX(ps_input_cntl)) {
3228 /* No corresponding output found, load defaults into input.
3229 * Don't set any other bits.
3230 * (FLAT_SHADE=1 completely changes behavior) */
3231 ps_input_cntl = S_028644_OFFSET(0x20);
3232 /* D3D 9 behaviour. GL is undefined */
3233 if (semantic == VARYING_SLOT_COL0)
3234 ps_input_cntl |= S_028644_DEFAULT_VAL(3);
3235 }
3236 }
3237
3238 return ps_input_cntl;
3239 }
3240
3241 static void si_emit_spi_map(struct si_context *sctx)
3242 {
3243 struct si_shader *ps = sctx->ps_shader.current;
3244 struct si_shader *vs = si_get_vs_state(sctx);
3245 struct si_shader_info *psinfo = ps ? &ps->selector->info : NULL;
3246 unsigned i, num_interp, num_written = 0;
3247 unsigned spi_ps_input_cntl[32];
3248
3249 if (!ps || !ps->selector->info.num_inputs)
3250 return;
3251
3252 num_interp = si_get_ps_num_interp(ps);
3253 assert(num_interp > 0);
3254
3255 for (i = 0; i < psinfo->num_inputs; i++) {
3256 unsigned semantic = psinfo->input_semantic[i];
3257 unsigned interpolate = psinfo->input_interpolate[i];
3258
3259 spi_ps_input_cntl[num_written++] = si_get_ps_input_cntl(sctx, vs, semantic, interpolate);
3260 }
3261
3262 if (ps->key.part.ps.prolog.color_two_side) {
3263 for (i = 0; i < 2; i++) {
3264 if (!(psinfo->colors_read & (0xf << (i * 4))))
3265 continue;
3266
3267 unsigned semantic = VARYING_SLOT_BFC0 + i;
3268 spi_ps_input_cntl[num_written++] = si_get_ps_input_cntl(sctx, vs, semantic,
3269 psinfo->color_interpolate[i]);
3270 }
3271 }
3272 assert(num_interp == num_written);
3273
3274 /* R_028644_SPI_PS_INPUT_CNTL_0 */
3275 /* Dota 2: Only ~16% of SPI map updates set different values. */
3276 /* Talos: Only ~9% of SPI map updates set different values. */
3277 unsigned initial_cdw = sctx->gfx_cs->current.cdw;
3278 radeon_opt_set_context_regn(sctx, R_028644_SPI_PS_INPUT_CNTL_0, spi_ps_input_cntl,
3279 sctx->tracked_regs.spi_ps_input_cntl, num_interp);
3280
3281 if (initial_cdw != sctx->gfx_cs->current.cdw)
3282 sctx->context_roll = true;
3283 }
3284
3285 /**
3286 * Writing CONFIG or UCONFIG VGT registers requires VGT_FLUSH before that.
3287 */
3288 static void si_cs_preamble_add_vgt_flush(struct si_context *sctx)
3289 {
3290 /* We shouldn't get here if registers are shadowed. */
3291 assert(!sctx->shadowed_regs);
3292
3293 if (sctx->cs_preamble_has_vgt_flush)
3294 return;
3295
3296 /* Done by Vulkan before VGT_FLUSH. */
3297 si_pm4_cmd_add(sctx->cs_preamble_state, PKT3(PKT3_EVENT_WRITE, 0, 0));
3298 si_pm4_cmd_add(sctx->cs_preamble_state, EVENT_TYPE(V_028A90_VS_PARTIAL_FLUSH) | EVENT_INDEX(4));
3299
3300 /* VGT_FLUSH is required even if VGT is idle. It resets VGT pointers. */
3301 si_pm4_cmd_add(sctx->cs_preamble_state, PKT3(PKT3_EVENT_WRITE, 0, 0));
3302 si_pm4_cmd_add(sctx->cs_preamble_state, EVENT_TYPE(V_028A90_VGT_FLUSH) | EVENT_INDEX(0));
3303 sctx->cs_preamble_has_vgt_flush = true;
3304 }
3305
3306 /**
3307 * Writing CONFIG or UCONFIG VGT registers requires VGT_FLUSH before that.
3308 */
3309 static void si_emit_vgt_flush(struct radeon_cmdbuf *cs)
3310 {
3311 /* This is required before VGT_FLUSH. */
3312 radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
3313 radeon_emit(cs, EVENT_TYPE(V_028A90_VS_PARTIAL_FLUSH) | EVENT_INDEX(4));
3314
3315 /* VGT_FLUSH is required even if VGT is idle. It resets VGT pointers. */
3316 radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
3317 radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_FLUSH) | EVENT_INDEX(0));
3318 }
3319
3320 /* Initialize state related to ESGS / GSVS ring buffers */
3321 static bool si_update_gs_ring_buffers(struct si_context *sctx)
3322 {
3323 struct si_shader_selector *es =
3324 sctx->tes_shader.cso ? sctx->tes_shader.cso : sctx->vs_shader.cso;
3325 struct si_shader_selector *gs = sctx->gs_shader.cso;
3326 struct si_pm4_state *pm4;
3327
3328 /* Chip constants. */
3329 unsigned num_se = sctx->screen->info.max_se;
3330 unsigned wave_size = 64;
3331 unsigned max_gs_waves = 32 * num_se; /* max 32 per SE on GCN */
3332 /* On GFX6-GFX7, the value comes from VGT_GS_VERTEX_REUSE = 16.
3333 * On GFX8+, the value comes from VGT_VERTEX_REUSE_BLOCK_CNTL = 30 (+2).
3334 */
3335 unsigned gs_vertex_reuse = (sctx->chip_class >= GFX8 ? 32 : 16) * num_se;
3336 unsigned alignment = 256 * num_se;
3337 /* The maximum size is 63.999 MB per SE. */
3338 unsigned max_size = ((unsigned)(63.999 * 1024 * 1024) & ~255) * num_se;
3339
3340 /* Calculate the minimum size. */
3341 unsigned min_esgs_ring_size = align(es->esgs_itemsize * gs_vertex_reuse * wave_size, alignment);
3342
3343 /* These are recommended sizes, not minimum sizes. */
3344 unsigned esgs_ring_size =
3345 max_gs_waves * 2 * wave_size * es->esgs_itemsize * gs->gs_input_verts_per_prim;
3346 unsigned gsvs_ring_size = max_gs_waves * 2 * wave_size * gs->max_gsvs_emit_size;
3347
3348 min_esgs_ring_size = align(min_esgs_ring_size, alignment);
3349 esgs_ring_size = align(esgs_ring_size, alignment);
3350 gsvs_ring_size = align(gsvs_ring_size, alignment);
3351
3352 esgs_ring_size = CLAMP(esgs_ring_size, min_esgs_ring_size, max_size);
3353 gsvs_ring_size = MIN2(gsvs_ring_size, max_size);
3354
3355 /* Some rings don't have to be allocated if shaders don't use them.
3356 * (e.g. no varyings between ES and GS or GS and VS)
3357 *
3358 * GFX9 doesn't have the ESGS ring.
3359 */
3360 bool update_esgs = sctx->chip_class <= GFX8 && esgs_ring_size &&
3361 (!sctx->esgs_ring || sctx->esgs_ring->width0 < esgs_ring_size);
3362 bool update_gsvs =
3363 gsvs_ring_size && (!sctx->gsvs_ring || sctx->gsvs_ring->width0 < gsvs_ring_size);
3364
3365 if (!update_esgs && !update_gsvs)
3366 return true;
3367
3368 if (update_esgs) {
3369 pipe_resource_reference(&sctx->esgs_ring, NULL);
3370 sctx->esgs_ring =
3371 pipe_aligned_buffer_create(sctx->b.screen, SI_RESOURCE_FLAG_UNMAPPABLE, PIPE_USAGE_DEFAULT,
3372 esgs_ring_size, sctx->screen->info.pte_fragment_size);
3373 if (!sctx->esgs_ring)
3374 return false;
3375 }
3376
3377 if (update_gsvs) {
3378 pipe_resource_reference(&sctx->gsvs_ring, NULL);
3379 sctx->gsvs_ring =
3380 pipe_aligned_buffer_create(sctx->b.screen, SI_RESOURCE_FLAG_UNMAPPABLE, PIPE_USAGE_DEFAULT,
3381 gsvs_ring_size, sctx->screen->info.pte_fragment_size);
3382 if (!sctx->gsvs_ring)
3383 return false;
3384 }
3385
3386 /* Set ring bindings. */
3387 if (sctx->esgs_ring) {
3388 assert(sctx->chip_class <= GFX8);
3389 si_set_ring_buffer(sctx, SI_ES_RING_ESGS, sctx->esgs_ring, 0, sctx->esgs_ring->width0, true,
3390 true, 4, 64, 0);
3391 si_set_ring_buffer(sctx, SI_GS_RING_ESGS, sctx->esgs_ring, 0, sctx->esgs_ring->width0, false,
3392 false, 0, 0, 0);
3393 }
3394 if (sctx->gsvs_ring) {
3395 si_set_ring_buffer(sctx, SI_RING_GSVS, sctx->gsvs_ring, 0, sctx->gsvs_ring->width0, false,
3396 false, 0, 0, 0);
3397 }
3398
3399 if (sctx->shadowed_regs) {
3400 /* These registers will be shadowed, so set them only once. */
3401 struct radeon_cmdbuf *cs = sctx->gfx_cs;
3402
3403 assert(sctx->chip_class >= GFX7);
3404
3405 si_emit_vgt_flush(cs);
3406
3407 /* Set the GS registers. */
3408 if (sctx->esgs_ring) {
3409 assert(sctx->chip_class <= GFX8);
3410 radeon_set_uconfig_reg(cs, R_030900_VGT_ESGS_RING_SIZE,
3411 sctx->esgs_ring->width0 / 256);
3412 }
3413 if (sctx->gsvs_ring) {
3414 radeon_set_uconfig_reg(cs, R_030904_VGT_GSVS_RING_SIZE,
3415 sctx->gsvs_ring->width0 / 256);
3416 }
3417 return true;
3418 }
3419
3420 /* The codepath without register shadowing. */
3421 /* Create the "cs_preamble_gs_rings" state. */
3422 pm4 = CALLOC_STRUCT(si_pm4_state);
3423 if (!pm4)
3424 return false;
3425
3426 if (sctx->chip_class >= GFX7) {
3427 if (sctx->esgs_ring) {
3428 assert(sctx->chip_class <= GFX8);
3429 si_pm4_set_reg(pm4, R_030900_VGT_ESGS_RING_SIZE, sctx->esgs_ring->width0 / 256);
3430 }
3431 if (sctx->gsvs_ring)
3432 si_pm4_set_reg(pm4, R_030904_VGT_GSVS_RING_SIZE, sctx->gsvs_ring->width0 / 256);
3433 } else {
3434 if (sctx->esgs_ring)
3435 si_pm4_set_reg(pm4, R_0088C8_VGT_ESGS_RING_SIZE, sctx->esgs_ring->width0 / 256);
3436 if (sctx->gsvs_ring)
3437 si_pm4_set_reg(pm4, R_0088CC_VGT_GSVS_RING_SIZE, sctx->gsvs_ring->width0 / 256);
3438 }
3439
3440 /* Set the state. */
3441 if (sctx->cs_preamble_gs_rings)
3442 si_pm4_free_state(sctx, sctx->cs_preamble_gs_rings, ~0);
3443 sctx->cs_preamble_gs_rings = pm4;
3444
3445 si_cs_preamble_add_vgt_flush(sctx);
3446
3447 /* Flush the context to re-emit both cs_preamble states. */
3448 sctx->initial_gfx_cs_size = 0; /* force flush */
3449 si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
3450
3451 return true;
3452 }
3453
3454 static void si_shader_lock(struct si_shader *shader)
3455 {
3456 simple_mtx_lock(&shader->selector->mutex);
3457 if (shader->previous_stage_sel) {
3458 assert(shader->previous_stage_sel != shader->selector);
3459 simple_mtx_lock(&shader->previous_stage_sel->mutex);
3460 }
3461 }
3462
3463 static void si_shader_unlock(struct si_shader *shader)
3464 {
3465 if (shader->previous_stage_sel)
3466 simple_mtx_unlock(&shader->previous_stage_sel->mutex);
3467 simple_mtx_unlock(&shader->selector->mutex);
3468 }
3469
3470 /**
3471 * @returns 1 if \p sel has been updated to use a new scratch buffer
3472 * 0 if not
3473 * < 0 if there was a failure
3474 */
3475 static int si_update_scratch_buffer(struct si_context *sctx, struct si_shader *shader)
3476 {
3477 uint64_t scratch_va = sctx->scratch_buffer->gpu_address;
3478
3479 if (!shader)
3480 return 0;
3481
3482 /* This shader doesn't need a scratch buffer */
3483 if (shader->config.scratch_bytes_per_wave == 0)
3484 return 0;
3485
3486 /* Prevent race conditions when updating:
3487 * - si_shader::scratch_bo
3488 * - si_shader::binary::code
3489 * - si_shader::previous_stage::binary::code.
3490 */
3491 si_shader_lock(shader);
3492
3493 /* This shader is already configured to use the current
3494 * scratch buffer. */
3495 if (shader->scratch_bo == sctx->scratch_buffer) {
3496 si_shader_unlock(shader);
3497 return 0;
3498 }
3499
3500 assert(sctx->scratch_buffer);
3501
3502 /* Replace the shader bo with a new bo that has the relocs applied. */
3503 if (!si_shader_binary_upload(sctx->screen, shader, scratch_va)) {
3504 si_shader_unlock(shader);
3505 return -1;
3506 }
3507
3508 /* Update the shader state to use the new shader bo. */
3509 si_shader_init_pm4_state(sctx->screen, shader);
3510
3511 si_resource_reference(&shader->scratch_bo, sctx->scratch_buffer);
3512
3513 si_shader_unlock(shader);
3514 return 1;
3515 }
3516
3517 static unsigned si_get_scratch_buffer_bytes_per_wave(struct si_shader *shader)
3518 {
3519 return shader ? shader->config.scratch_bytes_per_wave : 0;
3520 }
3521
3522 static struct si_shader *si_get_tcs_current(struct si_context *sctx)
3523 {
3524 if (!sctx->tes_shader.cso)
3525 return NULL; /* tessellation disabled */
3526
3527 return sctx->tcs_shader.cso ? sctx->tcs_shader.current : sctx->fixed_func_tcs_shader.current;
3528 }
3529
3530 static bool si_update_scratch_relocs(struct si_context *sctx)
3531 {
3532 struct si_shader *tcs = si_get_tcs_current(sctx);
3533 int r;
3534
3535 /* Update the shaders, so that they are using the latest scratch.
3536 * The scratch buffer may have been changed since these shaders were
3537 * last used, so we still need to try to update them, even if they
3538 * require scratch buffers smaller than the current size.
3539 */
3540 r = si_update_scratch_buffer(sctx, sctx->ps_shader.current);
3541 if (r < 0)
3542 return false;
3543 if (r == 1)
3544 si_pm4_bind_state(sctx, ps, sctx->ps_shader.current->pm4);
3545
3546 r = si_update_scratch_buffer(sctx, sctx->gs_shader.current);
3547 if (r < 0)
3548 return false;
3549 if (r == 1)
3550 si_pm4_bind_state(sctx, gs, sctx->gs_shader.current->pm4);
3551
3552 r = si_update_scratch_buffer(sctx, tcs);
3553 if (r < 0)
3554 return false;
3555 if (r == 1)
3556 si_pm4_bind_state(sctx, hs, tcs->pm4);
3557
3558 /* VS can be bound as LS, ES, or VS. */
3559 r = si_update_scratch_buffer(sctx, sctx->vs_shader.current);
3560 if (r < 0)
3561 return false;
3562 if (r == 1) {
3563 if (sctx->vs_shader.current->key.as_ls)
3564 si_pm4_bind_state(sctx, ls, sctx->vs_shader.current->pm4);
3565 else if (sctx->vs_shader.current->key.as_es)
3566 si_pm4_bind_state(sctx, es, sctx->vs_shader.current->pm4);
3567 else if (sctx->vs_shader.current->key.as_ngg)
3568 si_pm4_bind_state(sctx, gs, sctx->vs_shader.current->pm4);
3569 else
3570 si_pm4_bind_state(sctx, vs, sctx->vs_shader.current->pm4);
3571 }
3572
3573 /* TES can be bound as ES or VS. */
3574 r = si_update_scratch_buffer(sctx, sctx->tes_shader.current);
3575 if (r < 0)
3576 return false;
3577 if (r == 1) {
3578 if (sctx->tes_shader.current->key.as_es)
3579 si_pm4_bind_state(sctx, es, sctx->tes_shader.current->pm4);
3580 else if (sctx->tes_shader.current->key.as_ngg)
3581 si_pm4_bind_state(sctx, gs, sctx->tes_shader.current->pm4);
3582 else
3583 si_pm4_bind_state(sctx, vs, sctx->tes_shader.current->pm4);
3584 }
3585
3586 return true;
3587 }
3588
3589 static bool si_update_spi_tmpring_size(struct si_context *sctx)
3590 {
3591 /* SPI_TMPRING_SIZE.WAVESIZE must be constant for each scratch buffer.
3592 * There are 2 cases to handle:
3593 *
3594 * - If the current needed size is less than the maximum seen size,
3595 * use the maximum seen size, so that WAVESIZE remains the same.
3596 *
3597 * - If the current needed size is greater than the maximum seen size,
3598 * the scratch buffer is reallocated, so we can increase WAVESIZE.
3599 *
3600 * Shaders that set SCRATCH_EN=0 don't allocate scratch space.
3601 * Otherwise, the number of waves that can use scratch is
3602 * SPI_TMPRING_SIZE.WAVES.
3603 */
3604 unsigned bytes = 0;
3605
3606 bytes = MAX2(bytes, si_get_scratch_buffer_bytes_per_wave(sctx->ps_shader.current));
3607 bytes = MAX2(bytes, si_get_scratch_buffer_bytes_per_wave(sctx->gs_shader.current));
3608 bytes = MAX2(bytes, si_get_scratch_buffer_bytes_per_wave(sctx->vs_shader.current));
3609
3610 if (sctx->tes_shader.cso) {
3611 bytes = MAX2(bytes, si_get_scratch_buffer_bytes_per_wave(sctx->tes_shader.current));
3612 bytes = MAX2(bytes, si_get_scratch_buffer_bytes_per_wave(si_get_tcs_current(sctx)));
3613 }
3614
3615 sctx->max_seen_scratch_bytes_per_wave = MAX2(sctx->max_seen_scratch_bytes_per_wave, bytes);
3616
3617 unsigned scratch_needed_size = sctx->max_seen_scratch_bytes_per_wave * sctx->scratch_waves;
3618 unsigned spi_tmpring_size;
3619
3620 if (scratch_needed_size > 0) {
3621 if (!sctx->scratch_buffer || scratch_needed_size > sctx->scratch_buffer->b.b.width0) {
3622 /* Create a bigger scratch buffer */
3623 si_resource_reference(&sctx->scratch_buffer, NULL);
3624
3625 sctx->scratch_buffer = si_aligned_buffer_create(
3626 &sctx->screen->b, SI_RESOURCE_FLAG_UNMAPPABLE, PIPE_USAGE_DEFAULT, scratch_needed_size,
3627 sctx->screen->info.pte_fragment_size);
3628 if (!sctx->scratch_buffer)
3629 return false;
3630
3631 si_mark_atom_dirty(sctx, &sctx->atoms.s.scratch_state);
3632 si_context_add_resource_size(sctx, &sctx->scratch_buffer->b.b);
3633 }
3634
3635 if (!si_update_scratch_relocs(sctx))
3636 return false;
3637 }
3638
3639 /* The LLVM shader backend should be reporting aligned scratch_sizes. */
3640 assert((scratch_needed_size & ~0x3FF) == scratch_needed_size &&
3641 "scratch size should already be aligned correctly.");
3642
3643 spi_tmpring_size = S_0286E8_WAVES(sctx->scratch_waves) |
3644 S_0286E8_WAVESIZE(sctx->max_seen_scratch_bytes_per_wave >> 10);
3645 if (spi_tmpring_size != sctx->spi_tmpring_size) {
3646 sctx->spi_tmpring_size = spi_tmpring_size;
3647 si_mark_atom_dirty(sctx, &sctx->atoms.s.scratch_state);
3648 }
3649 return true;
3650 }
3651
3652 static void si_init_tess_factor_ring(struct si_context *sctx)
3653 {
3654 assert(!sctx->tess_rings);
3655 assert(((sctx->screen->tess_factor_ring_size / 4) & C_030938_SIZE) == 0);
3656
3657 /* The address must be aligned to 2^19, because the shader only
3658 * receives the high 13 bits.
3659 */
3660 sctx->tess_rings = pipe_aligned_buffer_create(
3661 sctx->b.screen, SI_RESOURCE_FLAG_32BIT, PIPE_USAGE_DEFAULT,
3662 sctx->screen->tess_offchip_ring_size + sctx->screen->tess_factor_ring_size, 1 << 19);
3663 if (!sctx->tess_rings)
3664 return;
3665
3666 uint64_t factor_va =
3667 si_resource(sctx->tess_rings)->gpu_address + sctx->screen->tess_offchip_ring_size;
3668
3669 if (sctx->shadowed_regs) {
3670 /* These registers will be shadowed, so set them only once. */
3671 struct radeon_cmdbuf *cs = sctx->gfx_cs;
3672
3673 assert(sctx->chip_class >= GFX7);
3674
3675 radeon_add_to_buffer_list(sctx, sctx->gfx_cs, si_resource(sctx->tess_rings),
3676 RADEON_USAGE_READWRITE, RADEON_PRIO_SHADER_RINGS);
3677 si_emit_vgt_flush(cs);
3678
3679 /* Set tessellation registers. */
3680 radeon_set_uconfig_reg(cs, R_030938_VGT_TF_RING_SIZE,
3681 S_030938_SIZE(sctx->screen->tess_factor_ring_size / 4));
3682 radeon_set_uconfig_reg(cs, R_030940_VGT_TF_MEMORY_BASE, factor_va >> 8);
3683 if (sctx->chip_class >= GFX10) {
3684 radeon_set_uconfig_reg(cs, R_030984_VGT_TF_MEMORY_BASE_HI_UMD,
3685 S_030984_BASE_HI(factor_va >> 40));
3686 } else if (sctx->chip_class == GFX9) {
3687 radeon_set_uconfig_reg(cs, R_030944_VGT_TF_MEMORY_BASE_HI,
3688 S_030944_BASE_HI(factor_va >> 40));
3689 }
3690 radeon_set_uconfig_reg(cs, R_03093C_VGT_HS_OFFCHIP_PARAM,
3691 sctx->screen->vgt_hs_offchip_param);
3692 return;
3693 }
3694
3695 /* The codepath without register shadowing. */
3696 si_cs_preamble_add_vgt_flush(sctx);
3697
3698 /* Append these registers to the init config state. */
3699 if (sctx->chip_class >= GFX7) {
3700 si_pm4_set_reg(sctx->cs_preamble_state, R_030938_VGT_TF_RING_SIZE,
3701 S_030938_SIZE(sctx->screen->tess_factor_ring_size / 4));
3702 si_pm4_set_reg(sctx->cs_preamble_state, R_030940_VGT_TF_MEMORY_BASE, factor_va >> 8);
3703 if (sctx->chip_class >= GFX10)
3704 si_pm4_set_reg(sctx->cs_preamble_state, R_030984_VGT_TF_MEMORY_BASE_HI_UMD,
3705 S_030984_BASE_HI(factor_va >> 40));
3706 else if (sctx->chip_class == GFX9)
3707 si_pm4_set_reg(sctx->cs_preamble_state, R_030944_VGT_TF_MEMORY_BASE_HI,
3708 S_030944_BASE_HI(factor_va >> 40));
3709 si_pm4_set_reg(sctx->cs_preamble_state, R_03093C_VGT_HS_OFFCHIP_PARAM,
3710 sctx->screen->vgt_hs_offchip_param);
3711 } else {
3712 si_pm4_set_reg(sctx->cs_preamble_state, R_008988_VGT_TF_RING_SIZE,
3713 S_008988_SIZE(sctx->screen->tess_factor_ring_size / 4));
3714 si_pm4_set_reg(sctx->cs_preamble_state, R_0089B8_VGT_TF_MEMORY_BASE, factor_va >> 8);
3715 si_pm4_set_reg(sctx->cs_preamble_state, R_0089B0_VGT_HS_OFFCHIP_PARAM,
3716 sctx->screen->vgt_hs_offchip_param);
3717 }
3718
3719 /* Flush the context to re-emit the cs_preamble state.
3720 * This is done only once in a lifetime of a context.
3721 */
3722 sctx->initial_gfx_cs_size = 0; /* force flush */
3723 si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
3724 }
3725
3726 static struct si_pm4_state *si_build_vgt_shader_config(struct si_screen *screen,
3727 union si_vgt_stages_key key)
3728 {
3729 struct si_pm4_state *pm4 = CALLOC_STRUCT(si_pm4_state);
3730 uint32_t stages = 0;
3731
3732 if (key.u.tess) {
3733 stages |= S_028B54_LS_EN(V_028B54_LS_STAGE_ON) | S_028B54_HS_EN(1) | S_028B54_DYNAMIC_HS(1);
3734
3735 if (key.u.gs)
3736 stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_DS) | S_028B54_GS_EN(1);
3737 else if (key.u.ngg)
3738 stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_DS);
3739 else
3740 stages |= S_028B54_VS_EN(V_028B54_VS_STAGE_DS);
3741 } else if (key.u.gs) {
3742 stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_REAL) | S_028B54_GS_EN(1);
3743 } else if (key.u.ngg) {
3744 stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_REAL);
3745 }
3746
3747 if (key.u.ngg) {
3748 stages |= S_028B54_PRIMGEN_EN(1) | S_028B54_GS_FAST_LAUNCH(key.u.ngg_gs_fast_launch) |
3749 S_028B54_NGG_WAVE_ID_EN(key.u.streamout) |
3750 S_028B54_PRIMGEN_PASSTHRU_EN(key.u.ngg_passthrough);
3751 } else if (key.u.gs)
3752 stages |= S_028B54_VS_EN(V_028B54_VS_STAGE_COPY_SHADER);
3753
3754 if (screen->info.chip_class >= GFX9)
3755 stages |= S_028B54_MAX_PRIMGRP_IN_WAVE(2);
3756
3757 if (screen->info.chip_class >= GFX10 &&
3758 /* GS fast launch hangs with Wave64, so always use Wave32. */
3759 (screen->ge_wave_size == 32 || (key.u.ngg && key.u.ngg_gs_fast_launch))) {
3760 stages |= S_028B54_HS_W32_EN(1) |
3761 S_028B54_GS_W32_EN(key.u.ngg) | /* legacy GS only supports Wave64 */
3762 S_028B54_VS_W32_EN(1);
3763 }
3764
3765 si_pm4_set_reg(pm4, R_028B54_VGT_SHADER_STAGES_EN, stages);
3766 return pm4;
3767 }
3768
3769 static void si_update_vgt_shader_config(struct si_context *sctx, union si_vgt_stages_key key)
3770 {
3771 struct si_pm4_state **pm4 = &sctx->vgt_shader_config[key.index];
3772
3773 if (unlikely(!*pm4))
3774 *pm4 = si_build_vgt_shader_config(sctx->screen, key);
3775 si_pm4_bind_state(sctx, vgt_shader_config, *pm4);
3776 }
3777
3778 bool si_update_shaders(struct si_context *sctx)
3779 {
3780 struct pipe_context *ctx = (struct pipe_context *)sctx;
3781 struct si_compiler_ctx_state compiler_state;
3782 struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
3783 struct si_shader *old_vs = si_get_vs_state(sctx);
3784 bool old_clip_disable = old_vs ? old_vs->key.opt.clip_disable : false;
3785 struct si_shader *old_ps = sctx->ps_shader.current;
3786 union si_vgt_stages_key key;
3787 unsigned old_spi_shader_col_format =
3788 old_ps ? old_ps->key.part.ps.epilog.spi_shader_col_format : 0;
3789 int r;
3790
3791 if (!sctx->compiler.passes)
3792 si_init_compiler(sctx->screen, &sctx->compiler);
3793
3794 compiler_state.compiler = &sctx->compiler;
3795 compiler_state.debug = sctx->debug;
3796 compiler_state.is_debug_context = sctx->is_debug;
3797
3798 key.index = 0;
3799
3800 if (sctx->tes_shader.cso)
3801 key.u.tess = 1;
3802 if (sctx->gs_shader.cso)
3803 key.u.gs = 1;
3804
3805 if (sctx->ngg) {
3806 key.u.ngg = 1;
3807 key.u.streamout = !!si_get_vs(sctx)->cso->so.num_outputs;
3808 }
3809
3810 /* Update TCS and TES. */
3811 if (sctx->tes_shader.cso) {
3812 if (!sctx->tess_rings) {
3813 si_init_tess_factor_ring(sctx);
3814 if (!sctx->tess_rings)
3815 return false;
3816 }
3817
3818 if (sctx->tcs_shader.cso) {
3819 r = si_shader_select(ctx, &sctx->tcs_shader, key, &compiler_state);
3820 if (r)
3821 return false;
3822 si_pm4_bind_state(sctx, hs, sctx->tcs_shader.current->pm4);
3823 } else {
3824 if (!sctx->fixed_func_tcs_shader.cso) {
3825 sctx->fixed_func_tcs_shader.cso = si_create_fixed_func_tcs(sctx);
3826 if (!sctx->fixed_func_tcs_shader.cso)
3827 return false;
3828 }
3829
3830 r = si_shader_select(ctx, &sctx->fixed_func_tcs_shader, key, &compiler_state);
3831 if (r)
3832 return false;
3833 si_pm4_bind_state(sctx, hs, sctx->fixed_func_tcs_shader.current->pm4);
3834 }
3835
3836 if (!sctx->gs_shader.cso || sctx->chip_class <= GFX8) {
3837 r = si_shader_select(ctx, &sctx->tes_shader, key, &compiler_state);
3838 if (r)
3839 return false;
3840
3841 if (sctx->gs_shader.cso) {
3842 /* TES as ES */
3843 assert(sctx->chip_class <= GFX8);
3844 si_pm4_bind_state(sctx, es, sctx->tes_shader.current->pm4);
3845 } else if (key.u.ngg) {
3846 si_pm4_bind_state(sctx, gs, sctx->tes_shader.current->pm4);
3847 } else {
3848 si_pm4_bind_state(sctx, vs, sctx->tes_shader.current->pm4);
3849 }
3850 }
3851 } else {
3852 if (sctx->chip_class <= GFX8)
3853 si_pm4_bind_state(sctx, ls, NULL);
3854 si_pm4_bind_state(sctx, hs, NULL);
3855 }
3856
3857 /* Update GS. */
3858 if (sctx->gs_shader.cso) {
3859 r = si_shader_select(ctx, &sctx->gs_shader, key, &compiler_state);
3860 if (r)
3861 return false;
3862 si_pm4_bind_state(sctx, gs, sctx->gs_shader.current->pm4);
3863 if (!key.u.ngg) {
3864 si_pm4_bind_state(sctx, vs, sctx->gs_shader.cso->gs_copy_shader->pm4);
3865
3866 if (!si_update_gs_ring_buffers(sctx))
3867 return false;
3868 } else {
3869 si_pm4_bind_state(sctx, vs, NULL);
3870 }
3871 } else {
3872 if (!key.u.ngg) {
3873 si_pm4_bind_state(sctx, gs, NULL);
3874 if (sctx->chip_class <= GFX8)
3875 si_pm4_bind_state(sctx, es, NULL);
3876 }
3877 }
3878
3879 /* Update VS. */
3880 if ((!key.u.tess && !key.u.gs) || sctx->chip_class <= GFX8) {
3881 r = si_shader_select(ctx, &sctx->vs_shader, key, &compiler_state);
3882 if (r)
3883 return false;
3884
3885 if (!key.u.tess && !key.u.gs) {
3886 if (key.u.ngg) {
3887 si_pm4_bind_state(sctx, gs, sctx->vs_shader.current->pm4);
3888 si_pm4_bind_state(sctx, vs, NULL);
3889 } else {
3890 si_pm4_bind_state(sctx, vs, sctx->vs_shader.current->pm4);
3891 }
3892 } else if (sctx->tes_shader.cso) {
3893 si_pm4_bind_state(sctx, ls, sctx->vs_shader.current->pm4);
3894 } else {
3895 assert(sctx->gs_shader.cso);
3896 si_pm4_bind_state(sctx, es, sctx->vs_shader.current->pm4);
3897 }
3898 }
3899
3900 /* This must be done after the shader variant is selected. */
3901 if (sctx->ngg) {
3902 struct si_shader *vs = si_get_vs(sctx)->current;
3903
3904 key.u.ngg_passthrough = gfx10_is_ngg_passthrough(vs);
3905 key.u.ngg_gs_fast_launch = !!(vs->key.opt.ngg_culling & SI_NGG_CULL_GS_FAST_LAUNCH_ALL);
3906 }
3907
3908 si_update_vgt_shader_config(sctx, key);
3909
3910 if (old_clip_disable != si_get_vs_state(sctx)->key.opt.clip_disable)
3911 si_mark_atom_dirty(sctx, &sctx->atoms.s.clip_regs);
3912
3913 if (sctx->ps_shader.cso) {
3914 unsigned db_shader_control;
3915
3916 r = si_shader_select(ctx, &sctx->ps_shader, key, &compiler_state);
3917 if (r)
3918 return false;
3919 si_pm4_bind_state(sctx, ps, sctx->ps_shader.current->pm4);
3920
3921 db_shader_control = sctx->ps_shader.cso->db_shader_control |
3922 S_02880C_KILL_ENABLE(si_get_alpha_test_func(sctx) != PIPE_FUNC_ALWAYS);
3923
3924 if (si_pm4_state_changed(sctx, ps) || si_pm4_state_changed(sctx, vs) ||
3925 (key.u.ngg && si_pm4_state_changed(sctx, gs)) ||
3926 sctx->sprite_coord_enable != rs->sprite_coord_enable ||
3927 sctx->flatshade != rs->flatshade) {
3928 sctx->sprite_coord_enable = rs->sprite_coord_enable;
3929 sctx->flatshade = rs->flatshade;
3930 si_mark_atom_dirty(sctx, &sctx->atoms.s.spi_map);
3931 }
3932
3933 if (sctx->screen->info.rbplus_allowed && si_pm4_state_changed(sctx, ps) &&
3934 (!old_ps || old_spi_shader_col_format !=
3935 sctx->ps_shader.current->key.part.ps.epilog.spi_shader_col_format))
3936 si_mark_atom_dirty(sctx, &sctx->atoms.s.cb_render_state);
3937
3938 if (sctx->ps_db_shader_control != db_shader_control) {
3939 sctx->ps_db_shader_control = db_shader_control;
3940 si_mark_atom_dirty(sctx, &sctx->atoms.s.db_render_state);
3941 if (sctx->screen->dpbb_allowed)
3942 si_mark_atom_dirty(sctx, &sctx->atoms.s.dpbb_state);
3943 }
3944
3945 if (sctx->smoothing_enabled !=
3946 sctx->ps_shader.current->key.part.ps.epilog.poly_line_smoothing) {
3947 sctx->smoothing_enabled = sctx->ps_shader.current->key.part.ps.epilog.poly_line_smoothing;
3948 si_mark_atom_dirty(sctx, &sctx->atoms.s.msaa_config);
3949
3950 if (sctx->chip_class == GFX6)
3951 si_mark_atom_dirty(sctx, &sctx->atoms.s.db_render_state);
3952
3953 if (sctx->framebuffer.nr_samples <= 1)
3954 si_mark_atom_dirty(sctx, &sctx->atoms.s.msaa_sample_locs);
3955 }
3956 }
3957
3958 if (si_pm4_state_enabled_and_changed(sctx, ls) || si_pm4_state_enabled_and_changed(sctx, hs) ||
3959 si_pm4_state_enabled_and_changed(sctx, es) || si_pm4_state_enabled_and_changed(sctx, gs) ||
3960 si_pm4_state_enabled_and_changed(sctx, vs) || si_pm4_state_enabled_and_changed(sctx, ps)) {
3961 if (!si_update_spi_tmpring_size(sctx))
3962 return false;
3963 }
3964
3965 if (sctx->chip_class >= GFX7) {
3966 if (si_pm4_state_enabled_and_changed(sctx, ls))
3967 sctx->prefetch_L2_mask |= SI_PREFETCH_LS;
3968 else if (!sctx->queued.named.ls)
3969 sctx->prefetch_L2_mask &= ~SI_PREFETCH_LS;
3970
3971 if (si_pm4_state_enabled_and_changed(sctx, hs))
3972 sctx->prefetch_L2_mask |= SI_PREFETCH_HS;
3973 else if (!sctx->queued.named.hs)
3974 sctx->prefetch_L2_mask &= ~SI_PREFETCH_HS;
3975
3976 if (si_pm4_state_enabled_and_changed(sctx, es))
3977 sctx->prefetch_L2_mask |= SI_PREFETCH_ES;
3978 else if (!sctx->queued.named.es)
3979 sctx->prefetch_L2_mask &= ~SI_PREFETCH_ES;
3980
3981 if (si_pm4_state_enabled_and_changed(sctx, gs))
3982 sctx->prefetch_L2_mask |= SI_PREFETCH_GS;
3983 else if (!sctx->queued.named.gs)
3984 sctx->prefetch_L2_mask &= ~SI_PREFETCH_GS;
3985
3986 if (si_pm4_state_enabled_and_changed(sctx, vs))
3987 sctx->prefetch_L2_mask |= SI_PREFETCH_VS;
3988 else if (!sctx->queued.named.vs)
3989 sctx->prefetch_L2_mask &= ~SI_PREFETCH_VS;
3990
3991 if (si_pm4_state_enabled_and_changed(sctx, ps))
3992 sctx->prefetch_L2_mask |= SI_PREFETCH_PS;
3993 else if (!sctx->queued.named.ps)
3994 sctx->prefetch_L2_mask &= ~SI_PREFETCH_PS;
3995 }
3996
3997 sctx->do_update_shaders = false;
3998 return true;
3999 }
4000
4001 static void si_emit_scratch_state(struct si_context *sctx)
4002 {
4003 struct radeon_cmdbuf *cs = sctx->gfx_cs;
4004
4005 radeon_set_context_reg(cs, R_0286E8_SPI_TMPRING_SIZE, sctx->spi_tmpring_size);
4006
4007 if (sctx->scratch_buffer) {
4008 radeon_add_to_buffer_list(sctx, sctx->gfx_cs, sctx->scratch_buffer, RADEON_USAGE_READWRITE,
4009 RADEON_PRIO_SCRATCH_BUFFER);
4010 }
4011 }
4012
4013 void si_init_screen_live_shader_cache(struct si_screen *sscreen)
4014 {
4015 util_live_shader_cache_init(&sscreen->live_shader_cache, si_create_shader_selector,
4016 si_destroy_shader_selector);
4017 }
4018
4019 void si_init_shader_functions(struct si_context *sctx)
4020 {
4021 sctx->atoms.s.spi_map.emit = si_emit_spi_map;
4022 sctx->atoms.s.scratch_state.emit = si_emit_scratch_state;
4023
4024 sctx->b.create_vs_state = si_create_shader;
4025 sctx->b.create_tcs_state = si_create_shader;
4026 sctx->b.create_tes_state = si_create_shader;
4027 sctx->b.create_gs_state = si_create_shader;
4028 sctx->b.create_fs_state = si_create_shader;
4029
4030 sctx->b.bind_vs_state = si_bind_vs_shader;
4031 sctx->b.bind_tcs_state = si_bind_tcs_shader;
4032 sctx->b.bind_tes_state = si_bind_tes_shader;
4033 sctx->b.bind_gs_state = si_bind_gs_shader;
4034 sctx->b.bind_fs_state = si_bind_ps_shader;
4035
4036 sctx->b.delete_vs_state = si_delete_shader_selector;
4037 sctx->b.delete_tcs_state = si_delete_shader_selector;
4038 sctx->b.delete_tes_state = si_delete_shader_selector;
4039 sctx->b.delete_gs_state = si_delete_shader_selector;
4040 sctx->b.delete_fs_state = si_delete_shader_selector;
4041 }