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vc4: Add support for vertex color clamping in the rasterizer.
[mesa.git] / src / gallium / drivers / vc4 / vc4_program.c
1 /*
2 * Copyright (c) 2014 Scott Mansell
3 * Copyright © 2014 Broadcom
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
25 #include <inttypes.h>
26 #include "util/u_format.h"
27 #include "util/u_hash.h"
28 #include "util/u_math.h"
29 #include "util/u_memory.h"
30 #include "util/ralloc.h"
31 #include "util/hash_table.h"
32 #include "tgsi/tgsi_dump.h"
33 #include "tgsi/tgsi_parse.h"
34 #include "compiler/nir/nir.h"
35 #include "compiler/nir/nir_builder.h"
36 #include "nir/tgsi_to_nir.h"
37 #include "vc4_context.h"
38 #include "vc4_qpu.h"
39 #include "vc4_qir.h"
40 #ifdef USE_VC4_SIMULATOR
41 #include "simpenrose/simpenrose.h"
42 #endif
43
44 static struct qreg
45 ntq_get_src(struct vc4_compile *c, nir_src src, int i);
46
47 static void
48 resize_qreg_array(struct vc4_compile *c,
49 struct qreg **regs,
50 uint32_t *size,
51 uint32_t decl_size)
52 {
53 if (*size >= decl_size)
54 return;
55
56 uint32_t old_size = *size;
57 *size = MAX2(*size * 2, decl_size);
58 *regs = reralloc(c, *regs, struct qreg, *size);
59 if (!*regs) {
60 fprintf(stderr, "Malloc failure\n");
61 abort();
62 }
63
64 for (uint32_t i = old_size; i < *size; i++)
65 (*regs)[i] = c->undef;
66 }
67
68 static struct qreg
69 indirect_uniform_load(struct vc4_compile *c, nir_intrinsic_instr *intr)
70 {
71 struct qreg indirect_offset = ntq_get_src(c, intr->src[0], 0);
72 uint32_t offset = intr->const_index[0];
73 struct vc4_compiler_ubo_range *range = NULL;
74 unsigned i;
75 for (i = 0; i < c->num_uniform_ranges; i++) {
76 range = &c->ubo_ranges[i];
77 if (offset >= range->src_offset &&
78 offset < range->src_offset + range->size) {
79 break;
80 }
81 }
82 /* The driver-location-based offset always has to be within a declared
83 * uniform range.
84 */
85 assert(range);
86 if (!range->used) {
87 range->used = true;
88 range->dst_offset = c->next_ubo_dst_offset;
89 c->next_ubo_dst_offset += range->size;
90 c->num_ubo_ranges++;
91 }
92
93 offset -= range->src_offset;
94
95 /* Adjust for where we stored the TGSI register base. */
96 indirect_offset = qir_ADD(c, indirect_offset,
97 qir_uniform_ui(c, (range->dst_offset +
98 offset)));
99
100 /* Clamp to [0, array size). Note that MIN/MAX are signed. */
101 indirect_offset = qir_MAX(c, indirect_offset, qir_uniform_ui(c, 0));
102 indirect_offset = qir_MIN(c, indirect_offset,
103 qir_uniform_ui(c, (range->dst_offset +
104 range->size - 4)));
105
106 qir_TEX_DIRECT(c, indirect_offset, qir_uniform(c, QUNIFORM_UBO_ADDR, 0));
107 c->num_texture_samples++;
108 return qir_TEX_RESULT(c);
109 }
110
111 nir_ssa_def *vc4_nir_get_state_uniform(struct nir_builder *b,
112 enum quniform_contents contents)
113 {
114 nir_intrinsic_instr *intr =
115 nir_intrinsic_instr_create(b->shader,
116 nir_intrinsic_load_uniform);
117 intr->const_index[0] = (VC4_NIR_STATE_UNIFORM_OFFSET + contents) * 4;
118 intr->num_components = 1;
119 intr->src[0] = nir_src_for_ssa(nir_imm_int(b, 0));
120 nir_ssa_dest_init(&intr->instr, &intr->dest, 1, 32, NULL);
121 nir_builder_instr_insert(b, &intr->instr);
122 return &intr->dest.ssa;
123 }
124
125 nir_ssa_def *
126 vc4_nir_get_swizzled_channel(nir_builder *b, nir_ssa_def **srcs, int swiz)
127 {
128 switch (swiz) {
129 default:
130 case PIPE_SWIZZLE_NONE:
131 fprintf(stderr, "warning: unknown swizzle\n");
132 /* FALLTHROUGH */
133 case PIPE_SWIZZLE_0:
134 return nir_imm_float(b, 0.0);
135 case PIPE_SWIZZLE_1:
136 return nir_imm_float(b, 1.0);
137 case PIPE_SWIZZLE_X:
138 case PIPE_SWIZZLE_Y:
139 case PIPE_SWIZZLE_Z:
140 case PIPE_SWIZZLE_W:
141 return srcs[swiz];
142 }
143 }
144
145 static struct qreg *
146 ntq_init_ssa_def(struct vc4_compile *c, nir_ssa_def *def)
147 {
148 struct qreg *qregs = ralloc_array(c->def_ht, struct qreg,
149 def->num_components);
150 _mesa_hash_table_insert(c->def_ht, def, qregs);
151 return qregs;
152 }
153
154 static struct qreg *
155 ntq_get_dest(struct vc4_compile *c, nir_dest *dest)
156 {
157 if (dest->is_ssa) {
158 struct qreg *qregs = ntq_init_ssa_def(c, &dest->ssa);
159 for (int i = 0; i < dest->ssa.num_components; i++)
160 qregs[i] = c->undef;
161 return qregs;
162 } else {
163 nir_register *reg = dest->reg.reg;
164 assert(dest->reg.base_offset == 0);
165 assert(reg->num_array_elems == 0);
166 struct hash_entry *entry =
167 _mesa_hash_table_search(c->def_ht, reg);
168 return entry->data;
169 }
170 }
171
172 static struct qreg
173 ntq_get_src(struct vc4_compile *c, nir_src src, int i)
174 {
175 struct hash_entry *entry;
176 if (src.is_ssa) {
177 entry = _mesa_hash_table_search(c->def_ht, src.ssa);
178 assert(i < src.ssa->num_components);
179 } else {
180 nir_register *reg = src.reg.reg;
181 entry = _mesa_hash_table_search(c->def_ht, reg);
182 assert(reg->num_array_elems == 0);
183 assert(src.reg.base_offset == 0);
184 assert(i < reg->num_components);
185 }
186
187 struct qreg *qregs = entry->data;
188 return qregs[i];
189 }
190
191 static struct qreg
192 ntq_get_alu_src(struct vc4_compile *c, nir_alu_instr *instr,
193 unsigned src)
194 {
195 assert(util_is_power_of_two(instr->dest.write_mask));
196 unsigned chan = ffs(instr->dest.write_mask) - 1;
197 struct qreg r = ntq_get_src(c, instr->src[src].src,
198 instr->src[src].swizzle[chan]);
199
200 assert(!instr->src[src].abs);
201 assert(!instr->src[src].negate);
202
203 return r;
204 };
205
206 static inline struct qreg
207 qir_SAT(struct vc4_compile *c, struct qreg val)
208 {
209 return qir_FMAX(c,
210 qir_FMIN(c, val, qir_uniform_f(c, 1.0)),
211 qir_uniform_f(c, 0.0));
212 }
213
214 static struct qreg
215 ntq_rcp(struct vc4_compile *c, struct qreg x)
216 {
217 struct qreg r = qir_RCP(c, x);
218
219 /* Apply a Newton-Raphson step to improve the accuracy. */
220 r = qir_FMUL(c, r, qir_FSUB(c,
221 qir_uniform_f(c, 2.0),
222 qir_FMUL(c, x, r)));
223
224 return r;
225 }
226
227 static struct qreg
228 ntq_rsq(struct vc4_compile *c, struct qreg x)
229 {
230 struct qreg r = qir_RSQ(c, x);
231
232 /* Apply a Newton-Raphson step to improve the accuracy. */
233 r = qir_FMUL(c, r, qir_FSUB(c,
234 qir_uniform_f(c, 1.5),
235 qir_FMUL(c,
236 qir_uniform_f(c, 0.5),
237 qir_FMUL(c, x,
238 qir_FMUL(c, r, r)))));
239
240 return r;
241 }
242
243 static struct qreg
244 ntq_umul(struct vc4_compile *c, struct qreg src0, struct qreg src1)
245 {
246 struct qreg src0_hi = qir_SHR(c, src0,
247 qir_uniform_ui(c, 24));
248 struct qreg src1_hi = qir_SHR(c, src1,
249 qir_uniform_ui(c, 24));
250
251 struct qreg hilo = qir_MUL24(c, src0_hi, src1);
252 struct qreg lohi = qir_MUL24(c, src0, src1_hi);
253 struct qreg lolo = qir_MUL24(c, src0, src1);
254
255 return qir_ADD(c, lolo, qir_SHL(c,
256 qir_ADD(c, hilo, lohi),
257 qir_uniform_ui(c, 24)));
258 }
259
260 static struct qreg
261 ntq_scale_depth_texture(struct vc4_compile *c, struct qreg src)
262 {
263 struct qreg depthf = qir_ITOF(c, qir_SHR(c, src,
264 qir_uniform_ui(c, 8)));
265 return qir_FMUL(c, depthf, qir_uniform_f(c, 1.0f/0xffffff));
266 }
267
268 /**
269 * Emits a lowered TXF_MS from an MSAA texture.
270 *
271 * The addressing math has been lowered in NIR, and now we just need to read
272 * it like a UBO.
273 */
274 static void
275 ntq_emit_txf(struct vc4_compile *c, nir_tex_instr *instr)
276 {
277 uint32_t tile_width = 32;
278 uint32_t tile_height = 32;
279 uint32_t tile_size = (tile_height * tile_width *
280 VC4_MAX_SAMPLES * sizeof(uint32_t));
281
282 unsigned unit = instr->texture_index;
283 uint32_t w = align(c->key->tex[unit].msaa_width, tile_width);
284 uint32_t w_tiles = w / tile_width;
285 uint32_t h = align(c->key->tex[unit].msaa_height, tile_height);
286 uint32_t h_tiles = h / tile_height;
287 uint32_t size = w_tiles * h_tiles * tile_size;
288
289 struct qreg addr;
290 assert(instr->num_srcs == 1);
291 assert(instr->src[0].src_type == nir_tex_src_coord);
292 addr = ntq_get_src(c, instr->src[0].src, 0);
293
294 /* Perform the clamping required by kernel validation. */
295 addr = qir_MAX(c, addr, qir_uniform_ui(c, 0));
296 addr = qir_MIN(c, addr, qir_uniform_ui(c, size - 4));
297
298 qir_TEX_DIRECT(c, addr, qir_uniform(c, QUNIFORM_TEXTURE_MSAA_ADDR, unit));
299
300 struct qreg tex = qir_TEX_RESULT(c);
301 c->num_texture_samples++;
302
303 struct qreg *dest = ntq_get_dest(c, &instr->dest);
304 enum pipe_format format = c->key->tex[unit].format;
305 if (util_format_is_depth_or_stencil(format)) {
306 struct qreg scaled = ntq_scale_depth_texture(c, tex);
307 for (int i = 0; i < 4; i++)
308 dest[i] = scaled;
309 } else {
310 for (int i = 0; i < 4; i++)
311 dest[i] = qir_UNPACK_8_F(c, tex, i);
312 }
313 }
314
315 static void
316 ntq_emit_tex(struct vc4_compile *c, nir_tex_instr *instr)
317 {
318 struct qreg s, t, r, lod, compare;
319 bool is_txb = false, is_txl = false;
320 unsigned unit = instr->texture_index;
321
322 if (instr->op == nir_texop_txf) {
323 ntq_emit_txf(c, instr);
324 return;
325 }
326
327 for (unsigned i = 0; i < instr->num_srcs; i++) {
328 switch (instr->src[i].src_type) {
329 case nir_tex_src_coord:
330 s = ntq_get_src(c, instr->src[i].src, 0);
331 if (instr->sampler_dim == GLSL_SAMPLER_DIM_1D)
332 t = qir_uniform_f(c, 0.5);
333 else
334 t = ntq_get_src(c, instr->src[i].src, 1);
335 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE)
336 r = ntq_get_src(c, instr->src[i].src, 2);
337 break;
338 case nir_tex_src_bias:
339 lod = ntq_get_src(c, instr->src[i].src, 0);
340 is_txb = true;
341 break;
342 case nir_tex_src_lod:
343 lod = ntq_get_src(c, instr->src[i].src, 0);
344 is_txl = true;
345 break;
346 case nir_tex_src_comparitor:
347 compare = ntq_get_src(c, instr->src[i].src, 0);
348 break;
349 default:
350 unreachable("unknown texture source");
351 }
352 }
353
354 struct qreg texture_u[] = {
355 qir_uniform(c, QUNIFORM_TEXTURE_CONFIG_P0, unit),
356 qir_uniform(c, QUNIFORM_TEXTURE_CONFIG_P1, unit),
357 qir_uniform(c, QUNIFORM_CONSTANT, 0),
358 qir_uniform(c, QUNIFORM_CONSTANT, 0),
359 };
360 uint32_t next_texture_u = 0;
361
362 /* There is no native support for GL texture rectangle coordinates, so
363 * we have to rescale from ([0, width], [0, height]) to ([0, 1], [0,
364 * 1]).
365 */
366 if (instr->sampler_dim == GLSL_SAMPLER_DIM_RECT) {
367 s = qir_FMUL(c, s,
368 qir_uniform(c, QUNIFORM_TEXRECT_SCALE_X, unit));
369 t = qir_FMUL(c, t,
370 qir_uniform(c, QUNIFORM_TEXRECT_SCALE_Y, unit));
371 }
372
373 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE || is_txl) {
374 texture_u[2] = qir_uniform(c, QUNIFORM_TEXTURE_CONFIG_P2,
375 unit | (is_txl << 16));
376 }
377
378 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE) {
379 qir_TEX_R(c, r, texture_u[next_texture_u++]);
380 } else if (c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
381 c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP ||
382 c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
383 c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP) {
384 qir_TEX_R(c, qir_uniform(c, QUNIFORM_TEXTURE_BORDER_COLOR, unit),
385 texture_u[next_texture_u++]);
386 }
387
388 if (c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP) {
389 s = qir_SAT(c, s);
390 }
391
392 if (c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP) {
393 t = qir_SAT(c, t);
394 }
395
396 qir_TEX_T(c, t, texture_u[next_texture_u++]);
397
398 if (is_txl || is_txb)
399 qir_TEX_B(c, lod, texture_u[next_texture_u++]);
400
401 qir_TEX_S(c, s, texture_u[next_texture_u++]);
402
403 c->num_texture_samples++;
404 struct qreg tex = qir_TEX_RESULT(c);
405
406 enum pipe_format format = c->key->tex[unit].format;
407
408 struct qreg *dest = ntq_get_dest(c, &instr->dest);
409 if (util_format_is_depth_or_stencil(format)) {
410 struct qreg normalized = ntq_scale_depth_texture(c, tex);
411 struct qreg depth_output;
412
413 struct qreg u0 = qir_uniform_f(c, 0.0f);
414 struct qreg u1 = qir_uniform_f(c, 1.0f);
415 if (c->key->tex[unit].compare_mode) {
416 switch (c->key->tex[unit].compare_func) {
417 case PIPE_FUNC_NEVER:
418 depth_output = qir_uniform_f(c, 0.0f);
419 break;
420 case PIPE_FUNC_ALWAYS:
421 depth_output = u1;
422 break;
423 case PIPE_FUNC_EQUAL:
424 qir_SF(c, qir_FSUB(c, compare, normalized));
425 depth_output = qir_SEL(c, QPU_COND_ZS, u1, u0);
426 break;
427 case PIPE_FUNC_NOTEQUAL:
428 qir_SF(c, qir_FSUB(c, compare, normalized));
429 depth_output = qir_SEL(c, QPU_COND_ZC, u1, u0);
430 break;
431 case PIPE_FUNC_GREATER:
432 qir_SF(c, qir_FSUB(c, compare, normalized));
433 depth_output = qir_SEL(c, QPU_COND_NC, u1, u0);
434 break;
435 case PIPE_FUNC_GEQUAL:
436 qir_SF(c, qir_FSUB(c, normalized, compare));
437 depth_output = qir_SEL(c, QPU_COND_NS, u1, u0);
438 break;
439 case PIPE_FUNC_LESS:
440 qir_SF(c, qir_FSUB(c, compare, normalized));
441 depth_output = qir_SEL(c, QPU_COND_NS, u1, u0);
442 break;
443 case PIPE_FUNC_LEQUAL:
444 qir_SF(c, qir_FSUB(c, normalized, compare));
445 depth_output = qir_SEL(c, QPU_COND_NC, u1, u0);
446 break;
447 }
448 } else {
449 depth_output = normalized;
450 }
451
452 for (int i = 0; i < 4; i++)
453 dest[i] = depth_output;
454 } else {
455 for (int i = 0; i < 4; i++)
456 dest[i] = qir_UNPACK_8_F(c, tex, i);
457 }
458 }
459
460 /**
461 * Computes x - floor(x), which is tricky because our FTOI truncates (rounds
462 * to zero).
463 */
464 static struct qreg
465 ntq_ffract(struct vc4_compile *c, struct qreg src)
466 {
467 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src));
468 struct qreg diff = qir_FSUB(c, src, trunc);
469 qir_SF(c, diff);
470 return qir_SEL(c, QPU_COND_NS,
471 qir_FADD(c, diff, qir_uniform_f(c, 1.0)), diff);
472 }
473
474 /**
475 * Computes floor(x), which is tricky because our FTOI truncates (rounds to
476 * zero).
477 */
478 static struct qreg
479 ntq_ffloor(struct vc4_compile *c, struct qreg src)
480 {
481 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src));
482
483 /* This will be < 0 if we truncated and the truncation was of a value
484 * that was < 0 in the first place.
485 */
486 qir_SF(c, qir_FSUB(c, src, trunc));
487
488 return qir_SEL(c, QPU_COND_NS,
489 qir_FSUB(c, trunc, qir_uniform_f(c, 1.0)), trunc);
490 }
491
492 /**
493 * Computes ceil(x), which is tricky because our FTOI truncates (rounds to
494 * zero).
495 */
496 static struct qreg
497 ntq_fceil(struct vc4_compile *c, struct qreg src)
498 {
499 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src));
500
501 /* This will be < 0 if we truncated and the truncation was of a value
502 * that was > 0 in the first place.
503 */
504 qir_SF(c, qir_FSUB(c, trunc, src));
505
506 return qir_SEL(c, QPU_COND_NS,
507 qir_FADD(c, trunc, qir_uniform_f(c, 1.0)), trunc);
508 }
509
510 static struct qreg
511 ntq_fsin(struct vc4_compile *c, struct qreg src)
512 {
513 float coeff[] = {
514 -2.0 * M_PI,
515 pow(2.0 * M_PI, 3) / (3 * 2 * 1),
516 -pow(2.0 * M_PI, 5) / (5 * 4 * 3 * 2 * 1),
517 pow(2.0 * M_PI, 7) / (7 * 6 * 5 * 4 * 3 * 2 * 1),
518 -pow(2.0 * M_PI, 9) / (9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
519 };
520
521 struct qreg scaled_x =
522 qir_FMUL(c,
523 src,
524 qir_uniform_f(c, 1.0 / (M_PI * 2.0)));
525
526 struct qreg x = qir_FADD(c,
527 ntq_ffract(c, scaled_x),
528 qir_uniform_f(c, -0.5));
529 struct qreg x2 = qir_FMUL(c, x, x);
530 struct qreg sum = qir_FMUL(c, x, qir_uniform_f(c, coeff[0]));
531 for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
532 x = qir_FMUL(c, x, x2);
533 sum = qir_FADD(c,
534 sum,
535 qir_FMUL(c,
536 x,
537 qir_uniform_f(c, coeff[i])));
538 }
539 return sum;
540 }
541
542 static struct qreg
543 ntq_fcos(struct vc4_compile *c, struct qreg src)
544 {
545 float coeff[] = {
546 -1.0f,
547 pow(2.0 * M_PI, 2) / (2 * 1),
548 -pow(2.0 * M_PI, 4) / (4 * 3 * 2 * 1),
549 pow(2.0 * M_PI, 6) / (6 * 5 * 4 * 3 * 2 * 1),
550 -pow(2.0 * M_PI, 8) / (8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
551 pow(2.0 * M_PI, 10) / (10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
552 };
553
554 struct qreg scaled_x =
555 qir_FMUL(c, src,
556 qir_uniform_f(c, 1.0f / (M_PI * 2.0f)));
557 struct qreg x_frac = qir_FADD(c,
558 ntq_ffract(c, scaled_x),
559 qir_uniform_f(c, -0.5));
560
561 struct qreg sum = qir_uniform_f(c, coeff[0]);
562 struct qreg x2 = qir_FMUL(c, x_frac, x_frac);
563 struct qreg x = x2; /* Current x^2, x^4, or x^6 */
564 for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
565 if (i != 1)
566 x = qir_FMUL(c, x, x2);
567
568 struct qreg mul = qir_FMUL(c,
569 x,
570 qir_uniform_f(c, coeff[i]));
571 if (i == 0)
572 sum = mul;
573 else
574 sum = qir_FADD(c, sum, mul);
575 }
576 return sum;
577 }
578
579 static struct qreg
580 ntq_fsign(struct vc4_compile *c, struct qreg src)
581 {
582 struct qreg t = qir_get_temp(c);
583
584 qir_SF(c, src);
585 qir_MOV_dest(c, t, qir_uniform_f(c, 0.0));
586 qir_MOV_dest(c, t, qir_uniform_f(c, 1.0))->cond = QPU_COND_ZC;
587 qir_MOV_dest(c, t, qir_uniform_f(c, -1.0))->cond = QPU_COND_NS;
588 return t;
589 }
590
591 static void
592 emit_vertex_input(struct vc4_compile *c, int attr)
593 {
594 enum pipe_format format = c->vs_key->attr_formats[attr];
595 uint32_t attr_size = util_format_get_blocksize(format);
596
597 c->vattr_sizes[attr] = align(attr_size, 4);
598 for (int i = 0; i < align(attr_size, 4) / 4; i++) {
599 c->inputs[attr * 4 + i] =
600 qir_MOV(c, qir_reg(QFILE_VPM, attr * 4 + i));
601 c->num_inputs++;
602 }
603 }
604
605 static void
606 emit_fragcoord_input(struct vc4_compile *c, int attr)
607 {
608 c->inputs[attr * 4 + 0] = qir_ITOF(c, qir_reg(QFILE_FRAG_X, 0));
609 c->inputs[attr * 4 + 1] = qir_ITOF(c, qir_reg(QFILE_FRAG_Y, 0));
610 c->inputs[attr * 4 + 2] =
611 qir_FMUL(c,
612 qir_ITOF(c, qir_FRAG_Z(c)),
613 qir_uniform_f(c, 1.0 / 0xffffff));
614 c->inputs[attr * 4 + 3] = qir_RCP(c, qir_FRAG_W(c));
615 }
616
617 static struct qreg
618 emit_fragment_varying(struct vc4_compile *c, gl_varying_slot slot,
619 uint8_t swizzle)
620 {
621 uint32_t i = c->num_input_slots++;
622 struct qreg vary = {
623 QFILE_VARY,
624 i
625 };
626
627 if (c->num_input_slots >= c->input_slots_array_size) {
628 c->input_slots_array_size =
629 MAX2(4, c->input_slots_array_size * 2);
630
631 c->input_slots = reralloc(c, c->input_slots,
632 struct vc4_varying_slot,
633 c->input_slots_array_size);
634 }
635
636 c->input_slots[i].slot = slot;
637 c->input_slots[i].swizzle = swizzle;
638
639 return qir_VARY_ADD_C(c, qir_FMUL(c, vary, qir_FRAG_W(c)));
640 }
641
642 static void
643 emit_fragment_input(struct vc4_compile *c, int attr, gl_varying_slot slot)
644 {
645 for (int i = 0; i < 4; i++) {
646 c->inputs[attr * 4 + i] =
647 emit_fragment_varying(c, slot, i);
648 c->num_inputs++;
649 }
650 }
651
652 static void
653 add_output(struct vc4_compile *c,
654 uint32_t decl_offset,
655 uint8_t slot,
656 uint8_t swizzle)
657 {
658 uint32_t old_array_size = c->outputs_array_size;
659 resize_qreg_array(c, &c->outputs, &c->outputs_array_size,
660 decl_offset + 1);
661
662 if (old_array_size != c->outputs_array_size) {
663 c->output_slots = reralloc(c,
664 c->output_slots,
665 struct vc4_varying_slot,
666 c->outputs_array_size);
667 }
668
669 c->output_slots[decl_offset].slot = slot;
670 c->output_slots[decl_offset].swizzle = swizzle;
671 }
672
673 static void
674 declare_uniform_range(struct vc4_compile *c, uint32_t start, uint32_t size)
675 {
676 unsigned array_id = c->num_uniform_ranges++;
677 if (array_id >= c->ubo_ranges_array_size) {
678 c->ubo_ranges_array_size = MAX2(c->ubo_ranges_array_size * 2,
679 array_id + 1);
680 c->ubo_ranges = reralloc(c, c->ubo_ranges,
681 struct vc4_compiler_ubo_range,
682 c->ubo_ranges_array_size);
683 }
684
685 c->ubo_ranges[array_id].dst_offset = 0;
686 c->ubo_ranges[array_id].src_offset = start;
687 c->ubo_ranges[array_id].size = size;
688 c->ubo_ranges[array_id].used = false;
689 }
690
691 static bool
692 ntq_src_is_only_ssa_def_user(nir_src *src)
693 {
694 if (!src->is_ssa)
695 return false;
696
697 if (!list_empty(&src->ssa->if_uses))
698 return false;
699
700 return (src->ssa->uses.next == &src->use_link &&
701 src->ssa->uses.next->next == &src->ssa->uses);
702 }
703
704 /**
705 * In general, emits a nir_pack_unorm_4x8 as a series of MOVs with the pack
706 * bit set.
707 *
708 * However, as an optimization, it tries to find the instructions generating
709 * the sources to be packed and just emit the pack flag there, if possible.
710 */
711 static void
712 ntq_emit_pack_unorm_4x8(struct vc4_compile *c, nir_alu_instr *instr)
713 {
714 struct qreg result = qir_get_temp(c);
715 struct nir_alu_instr *vec4 = NULL;
716
717 /* If packing from a vec4 op (as expected), identify it so that we can
718 * peek back at what generated its sources.
719 */
720 if (instr->src[0].src.is_ssa &&
721 instr->src[0].src.ssa->parent_instr->type == nir_instr_type_alu &&
722 nir_instr_as_alu(instr->src[0].src.ssa->parent_instr)->op ==
723 nir_op_vec4) {
724 vec4 = nir_instr_as_alu(instr->src[0].src.ssa->parent_instr);
725 }
726
727 /* If the pack is replicating the same channel 4 times, use the 8888
728 * pack flag. This is common for blending using the alpha
729 * channel.
730 */
731 if (instr->src[0].swizzle[0] == instr->src[0].swizzle[1] &&
732 instr->src[0].swizzle[0] == instr->src[0].swizzle[2] &&
733 instr->src[0].swizzle[0] == instr->src[0].swizzle[3]) {
734 struct qreg *dest = ntq_get_dest(c, &instr->dest.dest);
735 *dest = qir_PACK_8888_F(c,
736 ntq_get_src(c, instr->src[0].src,
737 instr->src[0].swizzle[0]));
738 return;
739 }
740
741 for (int i = 0; i < 4; i++) {
742 int swiz = instr->src[0].swizzle[i];
743 struct qreg src;
744 if (vec4) {
745 src = ntq_get_src(c, vec4->src[swiz].src,
746 vec4->src[swiz].swizzle[0]);
747 } else {
748 src = ntq_get_src(c, instr->src[0].src, swiz);
749 }
750
751 if (vec4 &&
752 ntq_src_is_only_ssa_def_user(&vec4->src[swiz].src) &&
753 src.file == QFILE_TEMP &&
754 c->defs[src.index] &&
755 qir_is_mul(c->defs[src.index]) &&
756 !c->defs[src.index]->dst.pack) {
757 struct qinst *rewrite = c->defs[src.index];
758 c->defs[src.index] = NULL;
759 rewrite->dst = result;
760 rewrite->dst.pack = QPU_PACK_MUL_8A + i;
761 continue;
762 }
763
764 qir_PACK_8_F(c, result, src, i);
765 }
766
767 struct qreg *dest = ntq_get_dest(c, &instr->dest.dest);
768 *dest = result;
769 }
770
771 /** Handles sign-extended bitfield extracts for 16 bits. */
772 static struct qreg
773 ntq_emit_ibfe(struct vc4_compile *c, struct qreg base, struct qreg offset,
774 struct qreg bits)
775 {
776 assert(bits.file == QFILE_UNIF &&
777 c->uniform_contents[bits.index] == QUNIFORM_CONSTANT &&
778 c->uniform_data[bits.index] == 16);
779
780 assert(offset.file == QFILE_UNIF &&
781 c->uniform_contents[offset.index] == QUNIFORM_CONSTANT);
782 int offset_bit = c->uniform_data[offset.index];
783 assert(offset_bit % 16 == 0);
784
785 return qir_UNPACK_16_I(c, base, offset_bit / 16);
786 }
787
788 /** Handles unsigned bitfield extracts for 8 bits. */
789 static struct qreg
790 ntq_emit_ubfe(struct vc4_compile *c, struct qreg base, struct qreg offset,
791 struct qreg bits)
792 {
793 assert(bits.file == QFILE_UNIF &&
794 c->uniform_contents[bits.index] == QUNIFORM_CONSTANT &&
795 c->uniform_data[bits.index] == 8);
796
797 assert(offset.file == QFILE_UNIF &&
798 c->uniform_contents[offset.index] == QUNIFORM_CONSTANT);
799 int offset_bit = c->uniform_data[offset.index];
800 assert(offset_bit % 8 == 0);
801
802 return qir_UNPACK_8_I(c, base, offset_bit / 8);
803 }
804
805 /**
806 * If compare_instr is a valid comparison instruction, emits the
807 * compare_instr's comparison and returns the sel_instr's return value based
808 * on the compare_instr's result.
809 */
810 static bool
811 ntq_emit_comparison(struct vc4_compile *c, struct qreg *dest,
812 nir_alu_instr *compare_instr,
813 nir_alu_instr *sel_instr)
814 {
815 enum qpu_cond cond;
816
817 switch (compare_instr->op) {
818 case nir_op_feq:
819 case nir_op_ieq:
820 case nir_op_seq:
821 cond = QPU_COND_ZS;
822 break;
823 case nir_op_fne:
824 case nir_op_ine:
825 case nir_op_sne:
826 cond = QPU_COND_ZC;
827 break;
828 case nir_op_fge:
829 case nir_op_ige:
830 case nir_op_uge:
831 case nir_op_sge:
832 cond = QPU_COND_NC;
833 break;
834 case nir_op_flt:
835 case nir_op_ilt:
836 case nir_op_slt:
837 cond = QPU_COND_NS;
838 break;
839 default:
840 return false;
841 }
842
843 struct qreg src0 = ntq_get_alu_src(c, compare_instr, 0);
844 struct qreg src1 = ntq_get_alu_src(c, compare_instr, 1);
845
846 unsigned unsized_type =
847 nir_alu_type_get_base_type(nir_op_infos[compare_instr->op].input_types[0]);
848 if (unsized_type == nir_type_float)
849 qir_SF(c, qir_FSUB(c, src0, src1));
850 else
851 qir_SF(c, qir_SUB(c, src0, src1));
852
853 switch (sel_instr->op) {
854 case nir_op_seq:
855 case nir_op_sne:
856 case nir_op_sge:
857 case nir_op_slt:
858 *dest = qir_SEL(c, cond,
859 qir_uniform_f(c, 1.0), qir_uniform_f(c, 0.0));
860 break;
861
862 case nir_op_bcsel:
863 *dest = qir_SEL(c, cond,
864 ntq_get_alu_src(c, sel_instr, 1),
865 ntq_get_alu_src(c, sel_instr, 2));
866 break;
867
868 default:
869 *dest = qir_SEL(c, cond,
870 qir_uniform_ui(c, ~0), qir_uniform_ui(c, 0));
871 break;
872 }
873
874 return true;
875 }
876
877 /**
878 * Attempts to fold a comparison generating a boolean result into the
879 * condition code for selecting between two values, instead of comparing the
880 * boolean result against 0 to generate the condition code.
881 */
882 static struct qreg ntq_emit_bcsel(struct vc4_compile *c, nir_alu_instr *instr,
883 struct qreg *src)
884 {
885 if (!instr->src[0].src.is_ssa)
886 goto out;
887 nir_alu_instr *compare =
888 nir_instr_as_alu(instr->src[0].src.ssa->parent_instr);
889 if (!compare)
890 goto out;
891
892 struct qreg dest;
893 if (ntq_emit_comparison(c, &dest, compare, instr))
894 return dest;
895
896 out:
897 qir_SF(c, src[0]);
898 return qir_SEL(c, QPU_COND_NS, src[1], src[2]);
899 }
900
901 static void
902 ntq_emit_alu(struct vc4_compile *c, nir_alu_instr *instr)
903 {
904 /* Vectors are special in that they have non-scalarized writemasks,
905 * and just take the first swizzle channel for each argument in order
906 * into each writemask channel.
907 */
908 if (instr->op == nir_op_vec2 ||
909 instr->op == nir_op_vec3 ||
910 instr->op == nir_op_vec4) {
911 struct qreg srcs[4];
912 for (int i = 0; i < nir_op_infos[instr->op].num_inputs; i++)
913 srcs[i] = ntq_get_src(c, instr->src[i].src,
914 instr->src[i].swizzle[0]);
915 struct qreg *dest = ntq_get_dest(c, &instr->dest.dest);
916 for (int i = 0; i < nir_op_infos[instr->op].num_inputs; i++)
917 dest[i] = srcs[i];
918 return;
919 }
920
921 if (instr->op == nir_op_pack_unorm_4x8) {
922 ntq_emit_pack_unorm_4x8(c, instr);
923 return;
924 }
925
926 if (instr->op == nir_op_unpack_unorm_4x8) {
927 struct qreg src = ntq_get_src(c, instr->src[0].src,
928 instr->src[0].swizzle[0]);
929 struct qreg *dest = ntq_get_dest(c, &instr->dest.dest);
930 for (int i = 0; i < 4; i++) {
931 if (instr->dest.write_mask & (1 << i))
932 dest[i] = qir_UNPACK_8_F(c, src, i);
933 }
934 return;
935 }
936
937 /* General case: We can just grab the one used channel per src. */
938 struct qreg src[nir_op_infos[instr->op].num_inputs];
939 for (int i = 0; i < nir_op_infos[instr->op].num_inputs; i++) {
940 src[i] = ntq_get_alu_src(c, instr, i);
941 }
942
943 /* Pick the channel to store the output in. */
944 assert(!instr->dest.saturate);
945 struct qreg *dest = ntq_get_dest(c, &instr->dest.dest);
946 assert(util_is_power_of_two(instr->dest.write_mask));
947 dest += ffs(instr->dest.write_mask) - 1;
948
949 switch (instr->op) {
950 case nir_op_fmov:
951 case nir_op_imov:
952 *dest = qir_MOV(c, src[0]);
953 break;
954 case nir_op_fmul:
955 *dest = qir_FMUL(c, src[0], src[1]);
956 break;
957 case nir_op_fadd:
958 *dest = qir_FADD(c, src[0], src[1]);
959 break;
960 case nir_op_fsub:
961 *dest = qir_FSUB(c, src[0], src[1]);
962 break;
963 case nir_op_fmin:
964 *dest = qir_FMIN(c, src[0], src[1]);
965 break;
966 case nir_op_fmax:
967 *dest = qir_FMAX(c, src[0], src[1]);
968 break;
969
970 case nir_op_f2i:
971 case nir_op_f2u:
972 *dest = qir_FTOI(c, src[0]);
973 break;
974 case nir_op_i2f:
975 case nir_op_u2f:
976 *dest = qir_ITOF(c, src[0]);
977 break;
978 case nir_op_b2f:
979 *dest = qir_AND(c, src[0], qir_uniform_f(c, 1.0));
980 break;
981 case nir_op_b2i:
982 *dest = qir_AND(c, src[0], qir_uniform_ui(c, 1));
983 break;
984 case nir_op_i2b:
985 case nir_op_f2b:
986 qir_SF(c, src[0]);
987 *dest = qir_SEL(c, QPU_COND_ZC,
988 qir_uniform_ui(c, ~0),
989 qir_uniform_ui(c, 0));
990 break;
991
992 case nir_op_iadd:
993 *dest = qir_ADD(c, src[0], src[1]);
994 break;
995 case nir_op_ushr:
996 *dest = qir_SHR(c, src[0], src[1]);
997 break;
998 case nir_op_isub:
999 *dest = qir_SUB(c, src[0], src[1]);
1000 break;
1001 case nir_op_ishr:
1002 *dest = qir_ASR(c, src[0], src[1]);
1003 break;
1004 case nir_op_ishl:
1005 *dest = qir_SHL(c, src[0], src[1]);
1006 break;
1007 case nir_op_imin:
1008 *dest = qir_MIN(c, src[0], src[1]);
1009 break;
1010 case nir_op_imax:
1011 *dest = qir_MAX(c, src[0], src[1]);
1012 break;
1013 case nir_op_iand:
1014 *dest = qir_AND(c, src[0], src[1]);
1015 break;
1016 case nir_op_ior:
1017 *dest = qir_OR(c, src[0], src[1]);
1018 break;
1019 case nir_op_ixor:
1020 *dest = qir_XOR(c, src[0], src[1]);
1021 break;
1022 case nir_op_inot:
1023 *dest = qir_NOT(c, src[0]);
1024 break;
1025
1026 case nir_op_imul:
1027 *dest = ntq_umul(c, src[0], src[1]);
1028 break;
1029
1030 case nir_op_seq:
1031 case nir_op_sne:
1032 case nir_op_sge:
1033 case nir_op_slt:
1034 case nir_op_feq:
1035 case nir_op_fne:
1036 case nir_op_fge:
1037 case nir_op_flt:
1038 case nir_op_ieq:
1039 case nir_op_ine:
1040 case nir_op_ige:
1041 case nir_op_uge:
1042 case nir_op_ilt:
1043 if (!ntq_emit_comparison(c, dest, instr, instr)) {
1044 fprintf(stderr, "Bad comparison instruction\n");
1045 }
1046 break;
1047
1048 case nir_op_bcsel:
1049 *dest = ntq_emit_bcsel(c, instr, src);
1050 break;
1051 case nir_op_fcsel:
1052 qir_SF(c, src[0]);
1053 *dest = qir_SEL(c, QPU_COND_ZC, src[1], src[2]);
1054 break;
1055
1056 case nir_op_frcp:
1057 *dest = ntq_rcp(c, src[0]);
1058 break;
1059 case nir_op_frsq:
1060 *dest = ntq_rsq(c, src[0]);
1061 break;
1062 case nir_op_fexp2:
1063 *dest = qir_EXP2(c, src[0]);
1064 break;
1065 case nir_op_flog2:
1066 *dest = qir_LOG2(c, src[0]);
1067 break;
1068
1069 case nir_op_ftrunc:
1070 *dest = qir_ITOF(c, qir_FTOI(c, src[0]));
1071 break;
1072 case nir_op_fceil:
1073 *dest = ntq_fceil(c, src[0]);
1074 break;
1075 case nir_op_ffract:
1076 *dest = ntq_ffract(c, src[0]);
1077 break;
1078 case nir_op_ffloor:
1079 *dest = ntq_ffloor(c, src[0]);
1080 break;
1081
1082 case nir_op_fsin:
1083 *dest = ntq_fsin(c, src[0]);
1084 break;
1085 case nir_op_fcos:
1086 *dest = ntq_fcos(c, src[0]);
1087 break;
1088
1089 case nir_op_fsign:
1090 *dest = ntq_fsign(c, src[0]);
1091 break;
1092
1093 case nir_op_fabs:
1094 *dest = qir_FMAXABS(c, src[0], src[0]);
1095 break;
1096 case nir_op_iabs:
1097 *dest = qir_MAX(c, src[0],
1098 qir_SUB(c, qir_uniform_ui(c, 0), src[0]));
1099 break;
1100
1101 case nir_op_ibitfield_extract:
1102 *dest = ntq_emit_ibfe(c, src[0], src[1], src[2]);
1103 break;
1104
1105 case nir_op_ubitfield_extract:
1106 *dest = ntq_emit_ubfe(c, src[0], src[1], src[2]);
1107 break;
1108
1109 case nir_op_usadd_4x8:
1110 *dest = qir_V8ADDS(c, src[0], src[1]);
1111 break;
1112
1113 case nir_op_ussub_4x8:
1114 *dest = qir_V8SUBS(c, src[0], src[1]);
1115 break;
1116
1117 case nir_op_umin_4x8:
1118 *dest = qir_V8MIN(c, src[0], src[1]);
1119 break;
1120
1121 case nir_op_umax_4x8:
1122 *dest = qir_V8MAX(c, src[0], src[1]);
1123 break;
1124
1125 case nir_op_umul_unorm_4x8:
1126 *dest = qir_V8MULD(c, src[0], src[1]);
1127 break;
1128
1129 default:
1130 fprintf(stderr, "unknown NIR ALU inst: ");
1131 nir_print_instr(&instr->instr, stderr);
1132 fprintf(stderr, "\n");
1133 abort();
1134 }
1135 }
1136
1137 static void
1138 emit_frag_end(struct vc4_compile *c)
1139 {
1140 struct qreg color;
1141 if (c->output_color_index != -1) {
1142 color = c->outputs[c->output_color_index];
1143 } else {
1144 color = qir_uniform_ui(c, 0);
1145 }
1146
1147 uint32_t discard_cond = QPU_COND_ALWAYS;
1148 if (c->discard.file != QFILE_NULL) {
1149 qir_SF(c, c->discard);
1150 discard_cond = QPU_COND_ZS;
1151 }
1152
1153 if (c->fs_key->stencil_enabled) {
1154 qir_MOV_dest(c, qir_reg(QFILE_TLB_STENCIL_SETUP, 0),
1155 qir_uniform(c, QUNIFORM_STENCIL, 0));
1156 if (c->fs_key->stencil_twoside) {
1157 qir_MOV_dest(c, qir_reg(QFILE_TLB_STENCIL_SETUP, 0),
1158 qir_uniform(c, QUNIFORM_STENCIL, 1));
1159 }
1160 if (c->fs_key->stencil_full_writemasks) {
1161 qir_MOV_dest(c, qir_reg(QFILE_TLB_STENCIL_SETUP, 0),
1162 qir_uniform(c, QUNIFORM_STENCIL, 2));
1163 }
1164 }
1165
1166 if (c->output_sample_mask_index != -1) {
1167 qir_MS_MASK(c, c->outputs[c->output_sample_mask_index]);
1168 }
1169
1170 if (c->fs_key->depth_enabled) {
1171 if (c->output_position_index != -1) {
1172 qir_FTOI_dest(c, qir_reg(QFILE_TLB_Z_WRITE, 0),
1173 qir_FMUL(c,
1174 c->outputs[c->output_position_index + 2],
1175 qir_uniform_f(c, 0xffffff)))->cond = discard_cond;
1176 } else {
1177 qir_MOV_dest(c, qir_reg(QFILE_TLB_Z_WRITE, 0),
1178 qir_FRAG_Z(c))->cond = discard_cond;
1179 }
1180 }
1181
1182 if (!c->msaa_per_sample_output) {
1183 qir_MOV_dest(c, qir_reg(QFILE_TLB_COLOR_WRITE, 0),
1184 color)->cond = discard_cond;
1185 } else {
1186 for (int i = 0; i < VC4_MAX_SAMPLES; i++) {
1187 qir_MOV_dest(c, qir_reg(QFILE_TLB_COLOR_WRITE_MS, 0),
1188 c->sample_colors[i])->cond = discard_cond;
1189 }
1190 }
1191 }
1192
1193 static void
1194 emit_scaled_viewport_write(struct vc4_compile *c, struct qreg rcp_w)
1195 {
1196 struct qreg packed = qir_get_temp(c);
1197
1198 for (int i = 0; i < 2; i++) {
1199 struct qreg scale =
1200 qir_uniform(c, QUNIFORM_VIEWPORT_X_SCALE + i, 0);
1201
1202 struct qreg packed_chan = packed;
1203 packed_chan.pack = QPU_PACK_A_16A + i;
1204
1205 qir_FTOI_dest(c, packed_chan,
1206 qir_FMUL(c,
1207 qir_FMUL(c,
1208 c->outputs[c->output_position_index + i],
1209 scale),
1210 rcp_w));
1211 }
1212
1213 qir_VPM_WRITE(c, packed);
1214 }
1215
1216 static void
1217 emit_zs_write(struct vc4_compile *c, struct qreg rcp_w)
1218 {
1219 struct qreg zscale = qir_uniform(c, QUNIFORM_VIEWPORT_Z_SCALE, 0);
1220 struct qreg zoffset = qir_uniform(c, QUNIFORM_VIEWPORT_Z_OFFSET, 0);
1221
1222 qir_VPM_WRITE(c, qir_FADD(c, qir_FMUL(c, qir_FMUL(c,
1223 c->outputs[c->output_position_index + 2],
1224 zscale),
1225 rcp_w),
1226 zoffset));
1227 }
1228
1229 static void
1230 emit_rcp_wc_write(struct vc4_compile *c, struct qreg rcp_w)
1231 {
1232 qir_VPM_WRITE(c, rcp_w);
1233 }
1234
1235 static void
1236 emit_point_size_write(struct vc4_compile *c)
1237 {
1238 struct qreg point_size;
1239
1240 if (c->output_point_size_index != -1)
1241 point_size = c->outputs[c->output_point_size_index];
1242 else
1243 point_size = qir_uniform_f(c, 1.0);
1244
1245 /* Workaround: HW-2726 PTB does not handle zero-size points (BCM2835,
1246 * BCM21553).
1247 */
1248 point_size = qir_FMAX(c, point_size, qir_uniform_f(c, .125));
1249
1250 qir_VPM_WRITE(c, point_size);
1251 }
1252
1253 /**
1254 * Emits a VPM read of the stub vertex attribute set up by vc4_draw.c.
1255 *
1256 * The simulator insists that there be at least one vertex attribute, so
1257 * vc4_draw.c will emit one if it wouldn't have otherwise. The simulator also
1258 * insists that all vertex attributes loaded get read by the VS/CS, so we have
1259 * to consume it here.
1260 */
1261 static void
1262 emit_stub_vpm_read(struct vc4_compile *c)
1263 {
1264 if (c->num_inputs)
1265 return;
1266
1267 c->vattr_sizes[0] = 4;
1268 (void)qir_MOV(c, qir_reg(QFILE_VPM, 0));
1269 c->num_inputs++;
1270 }
1271
1272 static void
1273 emit_vert_end(struct vc4_compile *c,
1274 struct vc4_varying_slot *fs_inputs,
1275 uint32_t num_fs_inputs)
1276 {
1277 struct qreg rcp_w = qir_RCP(c, c->outputs[c->output_position_index + 3]);
1278
1279 emit_stub_vpm_read(c);
1280
1281 emit_scaled_viewport_write(c, rcp_w);
1282 emit_zs_write(c, rcp_w);
1283 emit_rcp_wc_write(c, rcp_w);
1284 if (c->vs_key->per_vertex_point_size)
1285 emit_point_size_write(c);
1286
1287 for (int i = 0; i < num_fs_inputs; i++) {
1288 struct vc4_varying_slot *input = &fs_inputs[i];
1289 int j;
1290
1291 for (j = 0; j < c->num_outputs; j++) {
1292 struct vc4_varying_slot *output =
1293 &c->output_slots[j];
1294
1295 if (input->slot == output->slot &&
1296 input->swizzle == output->swizzle) {
1297 qir_VPM_WRITE(c, c->outputs[j]);
1298 break;
1299 }
1300 }
1301 /* Emit padding if we didn't find a declared VS output for
1302 * this FS input.
1303 */
1304 if (j == c->num_outputs)
1305 qir_VPM_WRITE(c, qir_uniform_f(c, 0.0));
1306 }
1307 }
1308
1309 static void
1310 emit_coord_end(struct vc4_compile *c)
1311 {
1312 struct qreg rcp_w = qir_RCP(c, c->outputs[c->output_position_index + 3]);
1313
1314 emit_stub_vpm_read(c);
1315
1316 for (int i = 0; i < 4; i++)
1317 qir_VPM_WRITE(c, c->outputs[c->output_position_index + i]);
1318
1319 emit_scaled_viewport_write(c, rcp_w);
1320 emit_zs_write(c, rcp_w);
1321 emit_rcp_wc_write(c, rcp_w);
1322 if (c->vs_key->per_vertex_point_size)
1323 emit_point_size_write(c);
1324 }
1325
1326 static void
1327 vc4_optimize_nir(struct nir_shader *s)
1328 {
1329 bool progress;
1330
1331 do {
1332 progress = false;
1333
1334 NIR_PASS_V(s, nir_lower_vars_to_ssa);
1335 NIR_PASS_V(s, nir_lower_alu_to_scalar);
1336 NIR_PASS_V(s, nir_lower_phis_to_scalar);
1337
1338 NIR_PASS(progress, s, nir_copy_prop);
1339 NIR_PASS(progress, s, nir_opt_dce);
1340 NIR_PASS(progress, s, nir_opt_cse);
1341 NIR_PASS(progress, s, nir_opt_peephole_select);
1342 NIR_PASS(progress, s, nir_opt_algebraic);
1343 NIR_PASS(progress, s, nir_opt_constant_folding);
1344 NIR_PASS(progress, s, nir_opt_undef);
1345 } while (progress);
1346 }
1347
1348 static int
1349 driver_location_compare(const void *in_a, const void *in_b)
1350 {
1351 const nir_variable *const *a = in_a;
1352 const nir_variable *const *b = in_b;
1353
1354 return (*a)->data.driver_location - (*b)->data.driver_location;
1355 }
1356
1357 static void
1358 ntq_setup_inputs(struct vc4_compile *c)
1359 {
1360 unsigned num_entries = 0;
1361 nir_foreach_variable(var, &c->s->inputs)
1362 num_entries++;
1363
1364 nir_variable *vars[num_entries];
1365
1366 unsigned i = 0;
1367 nir_foreach_variable(var, &c->s->inputs)
1368 vars[i++] = var;
1369
1370 /* Sort the variables so that we emit the input setup in
1371 * driver_location order. This is required for VPM reads, whose data
1372 * is fetched into the VPM in driver_location (TGSI register index)
1373 * order.
1374 */
1375 qsort(&vars, num_entries, sizeof(*vars), driver_location_compare);
1376
1377 for (unsigned i = 0; i < num_entries; i++) {
1378 nir_variable *var = vars[i];
1379 unsigned array_len = MAX2(glsl_get_length(var->type), 1);
1380 unsigned loc = var->data.driver_location;
1381
1382 assert(array_len == 1);
1383 (void)array_len;
1384 resize_qreg_array(c, &c->inputs, &c->inputs_array_size,
1385 (loc + 1) * 4);
1386
1387 if (c->stage == QSTAGE_FRAG) {
1388 if (var->data.location == VARYING_SLOT_POS) {
1389 emit_fragcoord_input(c, loc);
1390 } else if (var->data.location >= VARYING_SLOT_VAR0 &&
1391 (c->fs_key->point_sprite_mask &
1392 (1 << (var->data.location -
1393 VARYING_SLOT_VAR0)))) {
1394 c->inputs[loc * 4 + 0] = c->point_x;
1395 c->inputs[loc * 4 + 1] = c->point_y;
1396 } else {
1397 emit_fragment_input(c, loc, var->data.location);
1398 }
1399 } else {
1400 emit_vertex_input(c, loc);
1401 }
1402 }
1403 }
1404
1405 static void
1406 ntq_setup_outputs(struct vc4_compile *c)
1407 {
1408 nir_foreach_variable(var, &c->s->outputs) {
1409 unsigned array_len = MAX2(glsl_get_length(var->type), 1);
1410 unsigned loc = var->data.driver_location * 4;
1411
1412 assert(array_len == 1);
1413 (void)array_len;
1414
1415 for (int i = 0; i < 4; i++)
1416 add_output(c, loc + i, var->data.location, i);
1417
1418 if (c->stage == QSTAGE_FRAG) {
1419 switch (var->data.location) {
1420 case FRAG_RESULT_COLOR:
1421 case FRAG_RESULT_DATA0:
1422 c->output_color_index = loc;
1423 break;
1424 case FRAG_RESULT_DEPTH:
1425 c->output_position_index = loc;
1426 break;
1427 case FRAG_RESULT_SAMPLE_MASK:
1428 c->output_sample_mask_index = loc;
1429 break;
1430 }
1431 } else {
1432 switch (var->data.location) {
1433 case VARYING_SLOT_POS:
1434 c->output_position_index = loc;
1435 break;
1436 case VARYING_SLOT_PSIZ:
1437 c->output_point_size_index = loc;
1438 break;
1439 }
1440 }
1441 }
1442 }
1443
1444 static void
1445 ntq_setup_uniforms(struct vc4_compile *c)
1446 {
1447 nir_foreach_variable(var, &c->s->uniforms) {
1448 unsigned array_len = MAX2(glsl_get_length(var->type), 1);
1449 unsigned array_elem_size = 4 * sizeof(float);
1450
1451 declare_uniform_range(c, var->data.driver_location * array_elem_size,
1452 array_len * array_elem_size);
1453
1454 }
1455 }
1456
1457 /**
1458 * Sets up the mapping from nir_register to struct qreg *.
1459 *
1460 * Each nir_register gets a struct qreg per 32-bit component being stored.
1461 */
1462 static void
1463 ntq_setup_registers(struct vc4_compile *c, struct exec_list *list)
1464 {
1465 foreach_list_typed(nir_register, nir_reg, node, list) {
1466 unsigned array_len = MAX2(nir_reg->num_array_elems, 1);
1467 struct qreg *qregs = ralloc_array(c->def_ht, struct qreg,
1468 array_len *
1469 nir_reg->num_components);
1470
1471 _mesa_hash_table_insert(c->def_ht, nir_reg, qregs);
1472
1473 for (int i = 0; i < array_len * nir_reg->num_components; i++)
1474 qregs[i] = qir_uniform_ui(c, 0);
1475 }
1476 }
1477
1478 static void
1479 ntq_emit_load_const(struct vc4_compile *c, nir_load_const_instr *instr)
1480 {
1481 struct qreg *qregs = ntq_init_ssa_def(c, &instr->def);
1482 for (int i = 0; i < instr->def.num_components; i++)
1483 qregs[i] = qir_uniform_ui(c, instr->value.u32[i]);
1484
1485 _mesa_hash_table_insert(c->def_ht, &instr->def, qregs);
1486 }
1487
1488 static void
1489 ntq_emit_ssa_undef(struct vc4_compile *c, nir_ssa_undef_instr *instr)
1490 {
1491 struct qreg *qregs = ntq_init_ssa_def(c, &instr->def);
1492
1493 /* QIR needs there to be *some* value, so pick 0 (same as for
1494 * ntq_setup_registers().
1495 */
1496 for (int i = 0; i < instr->def.num_components; i++)
1497 qregs[i] = qir_uniform_ui(c, 0);
1498 }
1499
1500 static void
1501 ntq_emit_intrinsic(struct vc4_compile *c, nir_intrinsic_instr *instr)
1502 {
1503 const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic];
1504 nir_const_value *const_offset;
1505 unsigned offset;
1506 struct qreg *dest = NULL;
1507
1508 if (info->has_dest) {
1509 dest = ntq_get_dest(c, &instr->dest);
1510 }
1511
1512 switch (instr->intrinsic) {
1513 case nir_intrinsic_load_uniform:
1514 assert(instr->num_components == 1);
1515 const_offset = nir_src_as_const_value(instr->src[0]);
1516 if (const_offset) {
1517 offset = instr->const_index[0] + const_offset->u32[0];
1518 assert(offset % 4 == 0);
1519 /* We need dwords */
1520 offset = offset / 4;
1521 if (offset < VC4_NIR_STATE_UNIFORM_OFFSET) {
1522 *dest = qir_uniform(c, QUNIFORM_UNIFORM,
1523 offset);
1524 } else {
1525 *dest = qir_uniform(c, offset -
1526 VC4_NIR_STATE_UNIFORM_OFFSET,
1527 0);
1528 }
1529 } else {
1530 *dest = indirect_uniform_load(c, instr);
1531 }
1532 break;
1533
1534 case nir_intrinsic_load_user_clip_plane:
1535 for (int i = 0; i < instr->num_components; i++) {
1536 dest[i] = qir_uniform(c, QUNIFORM_USER_CLIP_PLANE,
1537 instr->const_index[0] * 4 + i);
1538 }
1539 break;
1540
1541 case nir_intrinsic_load_sample_mask_in:
1542 *dest = qir_uniform(c, QUNIFORM_SAMPLE_MASK, 0);
1543 break;
1544
1545 case nir_intrinsic_load_front_face:
1546 /* The register contains 0 (front) or 1 (back), and we need to
1547 * turn it into a NIR bool where true means front.
1548 */
1549 *dest = qir_ADD(c,
1550 qir_uniform_ui(c, -1),
1551 qir_reg(QFILE_FRAG_REV_FLAG, 0));
1552 break;
1553
1554 case nir_intrinsic_load_input:
1555 assert(instr->num_components == 1);
1556 const_offset = nir_src_as_const_value(instr->src[0]);
1557 assert(const_offset && "vc4 doesn't support indirect inputs");
1558 if (instr->const_index[0] >= VC4_NIR_TLB_COLOR_READ_INPUT) {
1559 assert(const_offset->u32[0] == 0);
1560 /* Reads of the per-sample color need to be done in
1561 * order.
1562 */
1563 int sample_index = (instr->const_index[0] -
1564 VC4_NIR_TLB_COLOR_READ_INPUT);
1565 for (int i = 0; i <= sample_index; i++) {
1566 if (c->color_reads[i].file == QFILE_NULL) {
1567 c->color_reads[i] =
1568 qir_TLB_COLOR_READ(c);
1569 }
1570 }
1571 *dest = c->color_reads[sample_index];
1572 } else {
1573 offset = instr->const_index[0] + const_offset->u32[0];
1574 *dest = c->inputs[offset];
1575 }
1576 break;
1577
1578 case nir_intrinsic_store_output:
1579 const_offset = nir_src_as_const_value(instr->src[1]);
1580 assert(const_offset && "vc4 doesn't support indirect outputs");
1581 offset = instr->const_index[0] + const_offset->u32[0];
1582
1583 /* MSAA color outputs are the only case where we have an
1584 * output that's not lowered to being a store of a single 32
1585 * bit value.
1586 */
1587 if (c->stage == QSTAGE_FRAG && instr->num_components == 4) {
1588 assert(offset == c->output_color_index);
1589 for (int i = 0; i < 4; i++) {
1590 c->sample_colors[i] =
1591 qir_MOV(c, ntq_get_src(c, instr->src[0],
1592 i));
1593 }
1594 } else {
1595 assert(instr->num_components == 1);
1596 c->outputs[offset] =
1597 qir_MOV(c, ntq_get_src(c, instr->src[0], 0));
1598 c->num_outputs = MAX2(c->num_outputs, offset + 1);
1599 }
1600 break;
1601
1602 case nir_intrinsic_discard:
1603 c->discard = qir_uniform_ui(c, ~0);
1604 break;
1605
1606 case nir_intrinsic_discard_if:
1607 if (c->discard.file == QFILE_NULL)
1608 c->discard = qir_uniform_ui(c, 0);
1609 c->discard = qir_OR(c, c->discard,
1610 ntq_get_src(c, instr->src[0], 0));
1611 break;
1612
1613 default:
1614 fprintf(stderr, "Unknown intrinsic: ");
1615 nir_print_instr(&instr->instr, stderr);
1616 fprintf(stderr, "\n");
1617 break;
1618 }
1619 }
1620
1621 static void
1622 ntq_emit_if(struct vc4_compile *c, nir_if *if_stmt)
1623 {
1624 fprintf(stderr, "general IF statements not handled.\n");
1625 }
1626
1627 static void
1628 ntq_emit_instr(struct vc4_compile *c, nir_instr *instr)
1629 {
1630 switch (instr->type) {
1631 case nir_instr_type_alu:
1632 ntq_emit_alu(c, nir_instr_as_alu(instr));
1633 break;
1634
1635 case nir_instr_type_intrinsic:
1636 ntq_emit_intrinsic(c, nir_instr_as_intrinsic(instr));
1637 break;
1638
1639 case nir_instr_type_load_const:
1640 ntq_emit_load_const(c, nir_instr_as_load_const(instr));
1641 break;
1642
1643 case nir_instr_type_ssa_undef:
1644 ntq_emit_ssa_undef(c, nir_instr_as_ssa_undef(instr));
1645 break;
1646
1647 case nir_instr_type_tex:
1648 ntq_emit_tex(c, nir_instr_as_tex(instr));
1649 break;
1650
1651 default:
1652 fprintf(stderr, "Unknown NIR instr type: ");
1653 nir_print_instr(instr, stderr);
1654 fprintf(stderr, "\n");
1655 abort();
1656 }
1657 }
1658
1659 static void
1660 ntq_emit_block(struct vc4_compile *c, nir_block *block)
1661 {
1662 nir_foreach_instr(instr, block) {
1663 ntq_emit_instr(c, instr);
1664 }
1665 }
1666
1667 static void ntq_emit_cf_list(struct vc4_compile *c, struct exec_list *list);
1668
1669 static void
1670 ntq_emit_loop(struct vc4_compile *c, nir_loop *nloop)
1671 {
1672 fprintf(stderr, "LOOPS not fully handled. Rendering errors likely.\n");
1673 ntq_emit_cf_list(c, &nloop->body);
1674 }
1675
1676 static void
1677 ntq_emit_function(struct vc4_compile *c, nir_function_impl *func)
1678 {
1679 fprintf(stderr, "FUNCTIONS not handled.\n");
1680 abort();
1681 }
1682
1683 static void
1684 ntq_emit_cf_list(struct vc4_compile *c, struct exec_list *list)
1685 {
1686 foreach_list_typed(nir_cf_node, node, node, list) {
1687 switch (node->type) {
1688 case nir_cf_node_block:
1689 ntq_emit_block(c, nir_cf_node_as_block(node));
1690 break;
1691
1692 case nir_cf_node_if:
1693 ntq_emit_if(c, nir_cf_node_as_if(node));
1694 break;
1695
1696 case nir_cf_node_loop:
1697 ntq_emit_loop(c, nir_cf_node_as_loop(node));
1698 break;
1699
1700 case nir_cf_node_function:
1701 ntq_emit_function(c, nir_cf_node_as_function(node));
1702 break;
1703
1704 default:
1705 fprintf(stderr, "Unknown NIR node type\n");
1706 abort();
1707 }
1708 }
1709 }
1710
1711 static void
1712 ntq_emit_impl(struct vc4_compile *c, nir_function_impl *impl)
1713 {
1714 ntq_setup_registers(c, &impl->registers);
1715 ntq_emit_cf_list(c, &impl->body);
1716 }
1717
1718 static void
1719 nir_to_qir(struct vc4_compile *c)
1720 {
1721 ntq_setup_inputs(c);
1722 ntq_setup_outputs(c);
1723 ntq_setup_uniforms(c);
1724 ntq_setup_registers(c, &c->s->registers);
1725
1726 /* Find the main function and emit the body. */
1727 nir_foreach_function(function, c->s) {
1728 assert(strcmp(function->name, "main") == 0);
1729 assert(function->impl);
1730 ntq_emit_impl(c, function->impl);
1731 }
1732 }
1733
1734 static const nir_shader_compiler_options nir_options = {
1735 .lower_extract_byte = true,
1736 .lower_extract_word = true,
1737 .lower_ffma = true,
1738 .lower_flrp32 = true,
1739 .lower_fpow = true,
1740 .lower_fsat = true,
1741 .lower_fsqrt = true,
1742 .lower_negate = true,
1743 };
1744
1745 static int
1746 count_nir_instrs(nir_shader *nir)
1747 {
1748 int count = 0;
1749 nir_foreach_function(function, nir) {
1750 if (!function->impl)
1751 continue;
1752 nir_foreach_block(block, function->impl) {
1753 nir_foreach_instr(instr, block)
1754 count++;
1755 }
1756 }
1757 return count;
1758 }
1759
1760 static struct vc4_compile *
1761 vc4_shader_ntq(struct vc4_context *vc4, enum qstage stage,
1762 struct vc4_key *key)
1763 {
1764 struct vc4_compile *c = qir_compile_init();
1765
1766 c->stage = stage;
1767 c->shader_state = &key->shader_state->base;
1768 c->program_id = key->shader_state->program_id;
1769 c->variant_id =
1770 p_atomic_inc_return(&key->shader_state->compiled_variant_count);
1771
1772 c->key = key;
1773 switch (stage) {
1774 case QSTAGE_FRAG:
1775 c->fs_key = (struct vc4_fs_key *)key;
1776 if (c->fs_key->is_points) {
1777 c->point_x = emit_fragment_varying(c, ~0, 0);
1778 c->point_y = emit_fragment_varying(c, ~0, 0);
1779 } else if (c->fs_key->is_lines) {
1780 c->line_x = emit_fragment_varying(c, ~0, 0);
1781 }
1782 break;
1783 case QSTAGE_VERT:
1784 c->vs_key = (struct vc4_vs_key *)key;
1785 break;
1786 case QSTAGE_COORD:
1787 c->vs_key = (struct vc4_vs_key *)key;
1788 break;
1789 }
1790
1791 c->s = nir_shader_clone(c, key->shader_state->base.ir.nir);
1792 NIR_PASS_V(c->s, nir_opt_global_to_local);
1793 NIR_PASS_V(c->s, nir_convert_to_ssa);
1794
1795 if (stage == QSTAGE_FRAG)
1796 NIR_PASS_V(c->s, vc4_nir_lower_blend, c);
1797
1798 struct nir_lower_tex_options tex_options = {
1799 /* We would need to implement txs, but we don't want the
1800 * int/float conversions
1801 */
1802 .lower_rect = false,
1803
1804 .lower_txp = ~0,
1805
1806 /* Apply swizzles to all samplers. */
1807 .swizzle_result = ~0,
1808 };
1809
1810 /* Lower the format swizzle and ARB_texture_swizzle-style swizzle.
1811 * The format swizzling applies before sRGB decode, and
1812 * ARB_texture_swizzle is the last thing before returning the sample.
1813 */
1814 for (int i = 0; i < ARRAY_SIZE(key->tex); i++) {
1815 enum pipe_format format = c->key->tex[i].format;
1816
1817 if (!format)
1818 continue;
1819
1820 const uint8_t *format_swizzle = vc4_get_format_swizzle(format);
1821
1822 for (int j = 0; j < 4; j++) {
1823 uint8_t arb_swiz = c->key->tex[i].swizzle[j];
1824
1825 if (arb_swiz <= 3) {
1826 tex_options.swizzles[i][j] =
1827 format_swizzle[arb_swiz];
1828 } else {
1829 tex_options.swizzles[i][j] = arb_swiz;
1830 }
1831 }
1832
1833 if (util_format_is_srgb(format))
1834 tex_options.lower_srgb |= (1 << i);
1835 }
1836
1837 NIR_PASS_V(c->s, nir_normalize_cubemap_coords);
1838 NIR_PASS_V(c->s, nir_lower_tex, &tex_options);
1839
1840 if (c->fs_key && c->fs_key->light_twoside)
1841 NIR_PASS_V(c->s, nir_lower_two_sided_color);
1842
1843 if (c->vs_key && c->vs_key->clamp_color)
1844 NIR_PASS_V(c->s, nir_lower_clamp_color_outputs);
1845
1846 if (stage == QSTAGE_FRAG)
1847 NIR_PASS_V(c->s, nir_lower_clip_fs, c->key->ucp_enables);
1848 else
1849 NIR_PASS_V(c->s, nir_lower_clip_vs, c->key->ucp_enables);
1850
1851 NIR_PASS_V(c->s, vc4_nir_lower_io, c);
1852 NIR_PASS_V(c->s, vc4_nir_lower_txf_ms, c);
1853 NIR_PASS_V(c->s, nir_lower_idiv);
1854 NIR_PASS_V(c->s, nir_lower_load_const_to_scalar);
1855
1856 vc4_optimize_nir(c->s);
1857
1858 NIR_PASS_V(c->s, nir_remove_dead_variables, nir_var_local);
1859 NIR_PASS_V(c->s, nir_convert_from_ssa, true);
1860
1861 if (vc4_debug & VC4_DEBUG_SHADERDB) {
1862 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d NIR instructions\n",
1863 qir_get_stage_name(c->stage),
1864 c->program_id, c->variant_id,
1865 count_nir_instrs(c->s));
1866 }
1867
1868 if (vc4_debug & VC4_DEBUG_NIR) {
1869 fprintf(stderr, "%s prog %d/%d NIR:\n",
1870 qir_get_stage_name(c->stage),
1871 c->program_id, c->variant_id);
1872 nir_print_shader(c->s, stderr);
1873 }
1874
1875 nir_to_qir(c);
1876
1877 switch (stage) {
1878 case QSTAGE_FRAG:
1879 emit_frag_end(c);
1880 break;
1881 case QSTAGE_VERT:
1882 emit_vert_end(c,
1883 vc4->prog.fs->input_slots,
1884 vc4->prog.fs->num_inputs);
1885 break;
1886 case QSTAGE_COORD:
1887 emit_coord_end(c);
1888 break;
1889 }
1890
1891 if (vc4_debug & VC4_DEBUG_QIR) {
1892 fprintf(stderr, "%s prog %d/%d pre-opt QIR:\n",
1893 qir_get_stage_name(c->stage),
1894 c->program_id, c->variant_id);
1895 qir_dump(c);
1896 fprintf(stderr, "\n");
1897 }
1898
1899 qir_optimize(c);
1900 qir_lower_uniforms(c);
1901
1902 qir_schedule_instructions(c);
1903
1904 if (vc4_debug & VC4_DEBUG_QIR) {
1905 fprintf(stderr, "%s prog %d/%d QIR:\n",
1906 qir_get_stage_name(c->stage),
1907 c->program_id, c->variant_id);
1908 qir_dump(c);
1909 fprintf(stderr, "\n");
1910 }
1911
1912 qir_reorder_uniforms(c);
1913 vc4_generate_code(vc4, c);
1914
1915 if (vc4_debug & VC4_DEBUG_SHADERDB) {
1916 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d instructions\n",
1917 qir_get_stage_name(c->stage),
1918 c->program_id, c->variant_id,
1919 c->qpu_inst_count);
1920 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d uniforms\n",
1921 qir_get_stage_name(c->stage),
1922 c->program_id, c->variant_id,
1923 c->num_uniforms);
1924 }
1925
1926 ralloc_free(c->s);
1927
1928 return c;
1929 }
1930
1931 static void *
1932 vc4_shader_state_create(struct pipe_context *pctx,
1933 const struct pipe_shader_state *cso)
1934 {
1935 struct vc4_context *vc4 = vc4_context(pctx);
1936 struct vc4_uncompiled_shader *so = CALLOC_STRUCT(vc4_uncompiled_shader);
1937 if (!so)
1938 return NULL;
1939
1940 so->program_id = vc4->next_uncompiled_program_id++;
1941
1942 nir_shader *s = tgsi_to_nir(cso->tokens, &nir_options);
1943
1944 if (vc4_debug & VC4_DEBUG_TGSI) {
1945 fprintf(stderr, "%s prog %d TGSI:\n",
1946 gl_shader_stage_name(s->stage),
1947 so->program_id);
1948 tgsi_dump(cso->tokens, 0);
1949 fprintf(stderr, "\n");
1950 }
1951
1952 so->base.type = PIPE_SHADER_IR_NIR;
1953 so->base.ir.nir = s;
1954
1955 return so;
1956 }
1957
1958 static void
1959 copy_uniform_state_to_shader(struct vc4_compiled_shader *shader,
1960 struct vc4_compile *c)
1961 {
1962 int count = c->num_uniforms;
1963 struct vc4_shader_uniform_info *uinfo = &shader->uniforms;
1964
1965 uinfo->count = count;
1966 uinfo->data = ralloc_array(shader, uint32_t, count);
1967 memcpy(uinfo->data, c->uniform_data,
1968 count * sizeof(*uinfo->data));
1969 uinfo->contents = ralloc_array(shader, enum quniform_contents, count);
1970 memcpy(uinfo->contents, c->uniform_contents,
1971 count * sizeof(*uinfo->contents));
1972 uinfo->num_texture_samples = c->num_texture_samples;
1973
1974 vc4_set_shader_uniform_dirty_flags(shader);
1975 }
1976
1977 static struct vc4_compiled_shader *
1978 vc4_get_compiled_shader(struct vc4_context *vc4, enum qstage stage,
1979 struct vc4_key *key)
1980 {
1981 struct hash_table *ht;
1982 uint32_t key_size;
1983 if (stage == QSTAGE_FRAG) {
1984 ht = vc4->fs_cache;
1985 key_size = sizeof(struct vc4_fs_key);
1986 } else {
1987 ht = vc4->vs_cache;
1988 key_size = sizeof(struct vc4_vs_key);
1989 }
1990
1991 struct vc4_compiled_shader *shader;
1992 struct hash_entry *entry = _mesa_hash_table_search(ht, key);
1993 if (entry)
1994 return entry->data;
1995
1996 struct vc4_compile *c = vc4_shader_ntq(vc4, stage, key);
1997 shader = rzalloc(NULL, struct vc4_compiled_shader);
1998
1999 shader->program_id = vc4->next_compiled_program_id++;
2000 if (stage == QSTAGE_FRAG) {
2001 bool input_live[c->num_input_slots];
2002
2003 memset(input_live, 0, sizeof(input_live));
2004 list_for_each_entry(struct qinst, inst, &c->instructions, link) {
2005 for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
2006 if (inst->src[i].file == QFILE_VARY)
2007 input_live[inst->src[i].index] = true;
2008 }
2009 }
2010
2011 shader->input_slots = ralloc_array(shader,
2012 struct vc4_varying_slot,
2013 c->num_input_slots);
2014
2015 for (int i = 0; i < c->num_input_slots; i++) {
2016 struct vc4_varying_slot *slot = &c->input_slots[i];
2017
2018 if (!input_live[i])
2019 continue;
2020
2021 /* Skip non-VS-output inputs. */
2022 if (slot->slot == (uint8_t)~0)
2023 continue;
2024
2025 if (slot->slot == VARYING_SLOT_COL0 ||
2026 slot->slot == VARYING_SLOT_COL1 ||
2027 slot->slot == VARYING_SLOT_BFC0 ||
2028 slot->slot == VARYING_SLOT_BFC1) {
2029 shader->color_inputs |= (1 << shader->num_inputs);
2030 }
2031
2032 shader->input_slots[shader->num_inputs] = *slot;
2033 shader->num_inputs++;
2034 }
2035 } else {
2036 shader->num_inputs = c->num_inputs;
2037
2038 shader->vattr_offsets[0] = 0;
2039 for (int i = 0; i < 8; i++) {
2040 shader->vattr_offsets[i + 1] =
2041 shader->vattr_offsets[i] + c->vattr_sizes[i];
2042
2043 if (c->vattr_sizes[i])
2044 shader->vattrs_live |= (1 << i);
2045 }
2046 }
2047
2048 copy_uniform_state_to_shader(shader, c);
2049 shader->bo = vc4_bo_alloc_shader(vc4->screen, c->qpu_insts,
2050 c->qpu_inst_count * sizeof(uint64_t));
2051
2052 /* Copy the compiler UBO range state to the compiled shader, dropping
2053 * out arrays that were never referenced by an indirect load.
2054 *
2055 * (Note that QIR dead code elimination of an array access still
2056 * leaves that array alive, though)
2057 */
2058 if (c->num_ubo_ranges) {
2059 shader->num_ubo_ranges = c->num_ubo_ranges;
2060 shader->ubo_ranges = ralloc_array(shader, struct vc4_ubo_range,
2061 c->num_ubo_ranges);
2062 uint32_t j = 0;
2063 for (int i = 0; i < c->num_uniform_ranges; i++) {
2064 struct vc4_compiler_ubo_range *range =
2065 &c->ubo_ranges[i];
2066 if (!range->used)
2067 continue;
2068
2069 shader->ubo_ranges[j].dst_offset = range->dst_offset;
2070 shader->ubo_ranges[j].src_offset = range->src_offset;
2071 shader->ubo_ranges[j].size = range->size;
2072 shader->ubo_size += c->ubo_ranges[i].size;
2073 j++;
2074 }
2075 }
2076 if (shader->ubo_size) {
2077 if (vc4_debug & VC4_DEBUG_SHADERDB) {
2078 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d UBO uniforms\n",
2079 qir_get_stage_name(c->stage),
2080 c->program_id, c->variant_id,
2081 shader->ubo_size / 4);
2082 }
2083 }
2084
2085 qir_compile_destroy(c);
2086
2087 struct vc4_key *dup_key;
2088 dup_key = ralloc_size(shader, key_size);
2089 memcpy(dup_key, key, key_size);
2090 _mesa_hash_table_insert(ht, dup_key, shader);
2091
2092 return shader;
2093 }
2094
2095 static void
2096 vc4_setup_shared_key(struct vc4_context *vc4, struct vc4_key *key,
2097 struct vc4_texture_stateobj *texstate)
2098 {
2099 for (int i = 0; i < texstate->num_textures; i++) {
2100 struct pipe_sampler_view *sampler = texstate->textures[i];
2101 struct pipe_sampler_state *sampler_state =
2102 texstate->samplers[i];
2103
2104 if (!sampler)
2105 continue;
2106
2107 key->tex[i].format = sampler->format;
2108 key->tex[i].swizzle[0] = sampler->swizzle_r;
2109 key->tex[i].swizzle[1] = sampler->swizzle_g;
2110 key->tex[i].swizzle[2] = sampler->swizzle_b;
2111 key->tex[i].swizzle[3] = sampler->swizzle_a;
2112
2113 if (sampler->texture->nr_samples > 1) {
2114 key->tex[i].msaa_width = sampler->texture->width0;
2115 key->tex[i].msaa_height = sampler->texture->height0;
2116 } else if (sampler){
2117 key->tex[i].compare_mode = sampler_state->compare_mode;
2118 key->tex[i].compare_func = sampler_state->compare_func;
2119 key->tex[i].wrap_s = sampler_state->wrap_s;
2120 key->tex[i].wrap_t = sampler_state->wrap_t;
2121 }
2122 }
2123
2124 key->ucp_enables = vc4->rasterizer->base.clip_plane_enable;
2125 }
2126
2127 static void
2128 vc4_update_compiled_fs(struct vc4_context *vc4, uint8_t prim_mode)
2129 {
2130 struct vc4_fs_key local_key;
2131 struct vc4_fs_key *key = &local_key;
2132
2133 if (!(vc4->dirty & (VC4_DIRTY_PRIM_MODE |
2134 VC4_DIRTY_BLEND |
2135 VC4_DIRTY_FRAMEBUFFER |
2136 VC4_DIRTY_ZSA |
2137 VC4_DIRTY_RASTERIZER |
2138 VC4_DIRTY_SAMPLE_MASK |
2139 VC4_DIRTY_FRAGTEX |
2140 VC4_DIRTY_TEXSTATE |
2141 VC4_DIRTY_UNCOMPILED_FS))) {
2142 return;
2143 }
2144
2145 memset(key, 0, sizeof(*key));
2146 vc4_setup_shared_key(vc4, &key->base, &vc4->fragtex);
2147 key->base.shader_state = vc4->prog.bind_fs;
2148 key->is_points = (prim_mode == PIPE_PRIM_POINTS);
2149 key->is_lines = (prim_mode >= PIPE_PRIM_LINES &&
2150 prim_mode <= PIPE_PRIM_LINE_STRIP);
2151 key->blend = vc4->blend->rt[0];
2152 if (vc4->blend->logicop_enable) {
2153 key->logicop_func = vc4->blend->logicop_func;
2154 } else {
2155 key->logicop_func = PIPE_LOGICOP_COPY;
2156 }
2157 if (vc4->msaa) {
2158 key->msaa = vc4->rasterizer->base.multisample;
2159 key->sample_coverage = (vc4->rasterizer->base.multisample &&
2160 vc4->sample_mask != (1 << VC4_MAX_SAMPLES) - 1);
2161 key->sample_alpha_to_coverage = vc4->blend->alpha_to_coverage;
2162 key->sample_alpha_to_one = vc4->blend->alpha_to_one;
2163 }
2164
2165 if (vc4->framebuffer.cbufs[0])
2166 key->color_format = vc4->framebuffer.cbufs[0]->format;
2167
2168 key->stencil_enabled = vc4->zsa->stencil_uniforms[0] != 0;
2169 key->stencil_twoside = vc4->zsa->stencil_uniforms[1] != 0;
2170 key->stencil_full_writemasks = vc4->zsa->stencil_uniforms[2] != 0;
2171 key->depth_enabled = (vc4->zsa->base.depth.enabled ||
2172 key->stencil_enabled);
2173 if (vc4->zsa->base.alpha.enabled) {
2174 key->alpha_test = true;
2175 key->alpha_test_func = vc4->zsa->base.alpha.func;
2176 }
2177
2178 if (key->is_points) {
2179 key->point_sprite_mask =
2180 vc4->rasterizer->base.sprite_coord_enable;
2181 key->point_coord_upper_left =
2182 (vc4->rasterizer->base.sprite_coord_mode ==
2183 PIPE_SPRITE_COORD_UPPER_LEFT);
2184 }
2185
2186 key->light_twoside = vc4->rasterizer->base.light_twoside;
2187
2188 struct vc4_compiled_shader *old_fs = vc4->prog.fs;
2189 vc4->prog.fs = vc4_get_compiled_shader(vc4, QSTAGE_FRAG, &key->base);
2190 if (vc4->prog.fs == old_fs)
2191 return;
2192
2193 vc4->dirty |= VC4_DIRTY_COMPILED_FS;
2194 if (vc4->rasterizer->base.flatshade &&
2195 old_fs && vc4->prog.fs->color_inputs != old_fs->color_inputs) {
2196 vc4->dirty |= VC4_DIRTY_FLAT_SHADE_FLAGS;
2197 }
2198 }
2199
2200 static void
2201 vc4_update_compiled_vs(struct vc4_context *vc4, uint8_t prim_mode)
2202 {
2203 struct vc4_vs_key local_key;
2204 struct vc4_vs_key *key = &local_key;
2205
2206 if (!(vc4->dirty & (VC4_DIRTY_PRIM_MODE |
2207 VC4_DIRTY_RASTERIZER |
2208 VC4_DIRTY_VERTTEX |
2209 VC4_DIRTY_TEXSTATE |
2210 VC4_DIRTY_VTXSTATE |
2211 VC4_DIRTY_UNCOMPILED_VS |
2212 VC4_DIRTY_COMPILED_FS))) {
2213 return;
2214 }
2215
2216 memset(key, 0, sizeof(*key));
2217 vc4_setup_shared_key(vc4, &key->base, &vc4->verttex);
2218 key->base.shader_state = vc4->prog.bind_vs;
2219 key->compiled_fs_id = vc4->prog.fs->program_id;
2220 key->clamp_color = vc4->rasterizer->base.clamp_vertex_color;
2221
2222 for (int i = 0; i < ARRAY_SIZE(key->attr_formats); i++)
2223 key->attr_formats[i] = vc4->vtx->pipe[i].src_format;
2224
2225 key->per_vertex_point_size =
2226 (prim_mode == PIPE_PRIM_POINTS &&
2227 vc4->rasterizer->base.point_size_per_vertex);
2228
2229 struct vc4_compiled_shader *vs =
2230 vc4_get_compiled_shader(vc4, QSTAGE_VERT, &key->base);
2231 if (vs != vc4->prog.vs) {
2232 vc4->prog.vs = vs;
2233 vc4->dirty |= VC4_DIRTY_COMPILED_VS;
2234 }
2235
2236 key->is_coord = true;
2237 struct vc4_compiled_shader *cs =
2238 vc4_get_compiled_shader(vc4, QSTAGE_COORD, &key->base);
2239 if (cs != vc4->prog.cs) {
2240 vc4->prog.cs = cs;
2241 vc4->dirty |= VC4_DIRTY_COMPILED_CS;
2242 }
2243 }
2244
2245 void
2246 vc4_update_compiled_shaders(struct vc4_context *vc4, uint8_t prim_mode)
2247 {
2248 vc4_update_compiled_fs(vc4, prim_mode);
2249 vc4_update_compiled_vs(vc4, prim_mode);
2250 }
2251
2252 static uint32_t
2253 fs_cache_hash(const void *key)
2254 {
2255 return _mesa_hash_data(key, sizeof(struct vc4_fs_key));
2256 }
2257
2258 static uint32_t
2259 vs_cache_hash(const void *key)
2260 {
2261 return _mesa_hash_data(key, sizeof(struct vc4_vs_key));
2262 }
2263
2264 static bool
2265 fs_cache_compare(const void *key1, const void *key2)
2266 {
2267 return memcmp(key1, key2, sizeof(struct vc4_fs_key)) == 0;
2268 }
2269
2270 static bool
2271 vs_cache_compare(const void *key1, const void *key2)
2272 {
2273 return memcmp(key1, key2, sizeof(struct vc4_vs_key)) == 0;
2274 }
2275
2276 static void
2277 delete_from_cache_if_matches(struct hash_table *ht,
2278 struct hash_entry *entry,
2279 struct vc4_uncompiled_shader *so)
2280 {
2281 const struct vc4_key *key = entry->key;
2282
2283 if (key->shader_state == so) {
2284 struct vc4_compiled_shader *shader = entry->data;
2285 _mesa_hash_table_remove(ht, entry);
2286 vc4_bo_unreference(&shader->bo);
2287 ralloc_free(shader);
2288 }
2289 }
2290
2291 static void
2292 vc4_shader_state_delete(struct pipe_context *pctx, void *hwcso)
2293 {
2294 struct vc4_context *vc4 = vc4_context(pctx);
2295 struct vc4_uncompiled_shader *so = hwcso;
2296
2297 struct hash_entry *entry;
2298 hash_table_foreach(vc4->fs_cache, entry)
2299 delete_from_cache_if_matches(vc4->fs_cache, entry, so);
2300 hash_table_foreach(vc4->vs_cache, entry)
2301 delete_from_cache_if_matches(vc4->vs_cache, entry, so);
2302
2303 ralloc_free(so->base.ir.nir);
2304 free(so);
2305 }
2306
2307 static void
2308 vc4_fp_state_bind(struct pipe_context *pctx, void *hwcso)
2309 {
2310 struct vc4_context *vc4 = vc4_context(pctx);
2311 vc4->prog.bind_fs = hwcso;
2312 vc4->dirty |= VC4_DIRTY_UNCOMPILED_FS;
2313 }
2314
2315 static void
2316 vc4_vp_state_bind(struct pipe_context *pctx, void *hwcso)
2317 {
2318 struct vc4_context *vc4 = vc4_context(pctx);
2319 vc4->prog.bind_vs = hwcso;
2320 vc4->dirty |= VC4_DIRTY_UNCOMPILED_VS;
2321 }
2322
2323 void
2324 vc4_program_init(struct pipe_context *pctx)
2325 {
2326 struct vc4_context *vc4 = vc4_context(pctx);
2327
2328 pctx->create_vs_state = vc4_shader_state_create;
2329 pctx->delete_vs_state = vc4_shader_state_delete;
2330
2331 pctx->create_fs_state = vc4_shader_state_create;
2332 pctx->delete_fs_state = vc4_shader_state_delete;
2333
2334 pctx->bind_fs_state = vc4_fp_state_bind;
2335 pctx->bind_vs_state = vc4_vp_state_bind;
2336
2337 vc4->fs_cache = _mesa_hash_table_create(pctx, fs_cache_hash,
2338 fs_cache_compare);
2339 vc4->vs_cache = _mesa_hash_table_create(pctx, vs_cache_hash,
2340 vs_cache_compare);
2341 }
2342
2343 void
2344 vc4_program_fini(struct pipe_context *pctx)
2345 {
2346 struct vc4_context *vc4 = vc4_context(pctx);
2347
2348 struct hash_entry *entry;
2349 hash_table_foreach(vc4->fs_cache, entry) {
2350 struct vc4_compiled_shader *shader = entry->data;
2351 vc4_bo_unreference(&shader->bo);
2352 ralloc_free(shader);
2353 _mesa_hash_table_remove(vc4->fs_cache, entry);
2354 }
2355
2356 hash_table_foreach(vc4->vs_cache, entry) {
2357 struct vc4_compiled_shader *shader = entry->data;
2358 vc4_bo_unreference(&shader->bo);
2359 ralloc_free(shader);
2360 _mesa_hash_table_remove(vc4->vs_cache, entry);
2361 }
2362 }