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vc4: Fix up statechange management for uncompiled/compiled FS/VS.
[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 "pipe/p_state.h"
27 #include "util/u_format.h"
28 #include "util/u_hash.h"
29 #include "util/u_memory.h"
30 #include "util/u_pack_color.h"
31 #include "util/format_srgb.h"
32 #include "util/ralloc.h"
33 #include "util/hash_table.h"
34 #include "tgsi/tgsi_dump.h"
35 #include "tgsi/tgsi_info.h"
36 #include "tgsi/tgsi_lowering.h"
37
38 #include "vc4_context.h"
39 #include "vc4_qpu.h"
40 #include "vc4_qir.h"
41 #ifdef USE_VC4_SIMULATOR
42 #include "simpenrose/simpenrose.h"
43 #endif
44
45 struct vc4_key {
46 struct vc4_uncompiled_shader *shader_state;
47 struct {
48 enum pipe_format format;
49 unsigned compare_mode:1;
50 unsigned compare_func:3;
51 unsigned wrap_s:3;
52 unsigned wrap_t:3;
53 uint8_t swizzle[4];
54 } tex[VC4_MAX_TEXTURE_SAMPLERS];
55 uint8_t ucp_enables;
56 };
57
58 struct vc4_fs_key {
59 struct vc4_key base;
60 enum pipe_format color_format;
61 bool depth_enabled;
62 bool stencil_enabled;
63 bool stencil_twoside;
64 bool stencil_full_writemasks;
65 bool is_points;
66 bool is_lines;
67 bool alpha_test;
68 bool point_coord_upper_left;
69 bool light_twoside;
70 uint8_t alpha_test_func;
71 uint8_t logicop_func;
72 uint32_t point_sprite_mask;
73
74 struct pipe_rt_blend_state blend;
75 };
76
77 struct vc4_vs_key {
78 struct vc4_key base;
79
80 /**
81 * This is a proxy for the array of FS input semantics, which is
82 * larger than we would want to put in the key.
83 */
84 uint64_t compiled_fs_id;
85
86 enum pipe_format attr_formats[8];
87 bool is_coord;
88 bool per_vertex_point_size;
89 };
90
91 static void
92 resize_qreg_array(struct vc4_compile *c,
93 struct qreg **regs,
94 uint32_t *size,
95 uint32_t decl_size)
96 {
97 if (*size >= decl_size)
98 return;
99
100 uint32_t old_size = *size;
101 *size = MAX2(*size * 2, decl_size);
102 *regs = reralloc(c, *regs, struct qreg, *size);
103 if (!*regs) {
104 fprintf(stderr, "Malloc failure\n");
105 abort();
106 }
107
108 for (uint32_t i = old_size; i < *size; i++)
109 (*regs)[i] = c->undef;
110 }
111
112 static struct qreg
113 add_uniform(struct vc4_compile *c,
114 enum quniform_contents contents,
115 uint32_t data)
116 {
117 for (int i = 0; i < c->num_uniforms; i++) {
118 if (c->uniform_contents[i] == contents &&
119 c->uniform_data[i] == data) {
120 return (struct qreg) { QFILE_UNIF, i };
121 }
122 }
123
124 uint32_t uniform = c->num_uniforms++;
125 struct qreg u = { QFILE_UNIF, uniform };
126
127 if (uniform >= c->uniform_array_size) {
128 c->uniform_array_size = MAX2(MAX2(16, uniform + 1),
129 c->uniform_array_size * 2);
130
131 c->uniform_data = reralloc(c, c->uniform_data,
132 uint32_t,
133 c->uniform_array_size);
134 c->uniform_contents = reralloc(c, c->uniform_contents,
135 enum quniform_contents,
136 c->uniform_array_size);
137 }
138
139 c->uniform_contents[uniform] = contents;
140 c->uniform_data[uniform] = data;
141
142 return u;
143 }
144
145 static struct qreg
146 get_temp_for_uniform(struct vc4_compile *c, enum quniform_contents contents,
147 uint32_t data)
148 {
149 struct qreg u = add_uniform(c, contents, data);
150 struct qreg t = qir_MOV(c, u);
151 return t;
152 }
153
154 static struct qreg
155 qir_uniform_ui(struct vc4_compile *c, uint32_t ui)
156 {
157 return get_temp_for_uniform(c, QUNIFORM_CONSTANT, ui);
158 }
159
160 static struct qreg
161 qir_uniform_f(struct vc4_compile *c, float f)
162 {
163 return qir_uniform_ui(c, fui(f));
164 }
165
166 static struct qreg
167 indirect_uniform_load(struct vc4_compile *c,
168 struct tgsi_full_src_register *src, int swiz)
169 {
170 struct tgsi_ind_register *indirect = &src->Indirect;
171 struct vc4_compiler_ubo_range *range = &c->ubo_ranges[indirect->ArrayID];
172 if (!range->used) {
173 range->used = true;
174 range->dst_offset = c->next_ubo_dst_offset;
175 c->next_ubo_dst_offset += range->size;
176 c->num_ubo_ranges++;
177 };
178
179 assert(src->Register.Indirect);
180 assert(indirect->File == TGSI_FILE_ADDRESS);
181
182 struct qreg addr_val = c->addr[indirect->Swizzle];
183 struct qreg indirect_offset =
184 qir_ADD(c, addr_val, qir_uniform_ui(c,
185 range->dst_offset +
186 (src->Register.Index * 16)+
187 swiz * 4));
188 indirect_offset = qir_MIN(c, indirect_offset, qir_uniform_ui(c, (range->dst_offset +
189 range->size - 4)));
190
191 qir_TEX_DIRECT(c, indirect_offset, add_uniform(c, QUNIFORM_UBO_ADDR, 0));
192 struct qreg r4 = qir_TEX_RESULT(c);
193 c->num_texture_samples++;
194 return qir_MOV(c, r4);
195 }
196
197 static struct qreg
198 get_src(struct vc4_compile *c, unsigned tgsi_op,
199 struct tgsi_full_src_register *full_src, int i)
200 {
201 struct tgsi_src_register *src = &full_src->Register;
202 struct qreg r = c->undef;
203
204 uint32_t s = i;
205 switch (i) {
206 case TGSI_SWIZZLE_X:
207 s = src->SwizzleX;
208 break;
209 case TGSI_SWIZZLE_Y:
210 s = src->SwizzleY;
211 break;
212 case TGSI_SWIZZLE_Z:
213 s = src->SwizzleZ;
214 break;
215 case TGSI_SWIZZLE_W:
216 s = src->SwizzleW;
217 break;
218 default:
219 abort();
220 }
221
222 switch (src->File) {
223 case TGSI_FILE_NULL:
224 return r;
225 case TGSI_FILE_TEMPORARY:
226 r = c->temps[src->Index * 4 + s];
227 break;
228 case TGSI_FILE_IMMEDIATE:
229 r = c->consts[src->Index * 4 + s];
230 break;
231 case TGSI_FILE_CONSTANT:
232 if (src->Indirect) {
233 r = indirect_uniform_load(c, full_src, s);
234 } else {
235 r = get_temp_for_uniform(c, QUNIFORM_UNIFORM,
236 src->Index * 4 + s);
237 }
238 break;
239 case TGSI_FILE_INPUT:
240 r = c->inputs[src->Index * 4 + s];
241 break;
242 case TGSI_FILE_SAMPLER:
243 case TGSI_FILE_SAMPLER_VIEW:
244 r = c->undef;
245 break;
246 default:
247 fprintf(stderr, "unknown src file %d\n", src->File);
248 abort();
249 }
250
251 if (src->Absolute)
252 r = qir_FMAXABS(c, r, r);
253
254 if (src->Negate) {
255 switch (tgsi_opcode_infer_src_type(tgsi_op)) {
256 case TGSI_TYPE_SIGNED:
257 case TGSI_TYPE_UNSIGNED:
258 r = qir_SUB(c, qir_uniform_ui(c, 0), r);
259 break;
260 default:
261 r = qir_FSUB(c, qir_uniform_f(c, 0.0), r);
262 break;
263 }
264 }
265
266 return r;
267 };
268
269
270 static void
271 update_dst(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst,
272 int i, struct qreg val)
273 {
274 struct tgsi_dst_register *tgsi_dst = &tgsi_inst->Dst[0].Register;
275
276 assert(!tgsi_dst->Indirect);
277
278 switch (tgsi_dst->File) {
279 case TGSI_FILE_TEMPORARY:
280 c->temps[tgsi_dst->Index * 4 + i] = val;
281 break;
282 case TGSI_FILE_OUTPUT:
283 c->outputs[tgsi_dst->Index * 4 + i] = val;
284 c->num_outputs = MAX2(c->num_outputs,
285 tgsi_dst->Index * 4 + i + 1);
286 break;
287 case TGSI_FILE_ADDRESS:
288 assert(tgsi_dst->Index == 0);
289 c->addr[i] = val;
290 break;
291 default:
292 fprintf(stderr, "unknown dst file %d\n", tgsi_dst->File);
293 abort();
294 }
295 };
296
297 static struct qreg
298 get_swizzled_channel(struct vc4_compile *c,
299 struct qreg *srcs, int swiz)
300 {
301 switch (swiz) {
302 default:
303 case UTIL_FORMAT_SWIZZLE_NONE:
304 fprintf(stderr, "warning: unknown swizzle\n");
305 /* FALLTHROUGH */
306 case UTIL_FORMAT_SWIZZLE_0:
307 return qir_uniform_f(c, 0.0);
308 case UTIL_FORMAT_SWIZZLE_1:
309 return qir_uniform_f(c, 1.0);
310 case UTIL_FORMAT_SWIZZLE_X:
311 case UTIL_FORMAT_SWIZZLE_Y:
312 case UTIL_FORMAT_SWIZZLE_Z:
313 case UTIL_FORMAT_SWIZZLE_W:
314 return srcs[swiz];
315 }
316 }
317
318 static struct qreg
319 tgsi_to_qir_alu(struct vc4_compile *c,
320 struct tgsi_full_instruction *tgsi_inst,
321 enum qop op, struct qreg *src, int i)
322 {
323 struct qreg dst = qir_get_temp(c);
324 qir_emit(c, qir_inst4(op, dst,
325 src[0 * 4 + i],
326 src[1 * 4 + i],
327 src[2 * 4 + i],
328 c->undef));
329 return dst;
330 }
331
332 static struct qreg
333 tgsi_to_qir_scalar(struct vc4_compile *c,
334 struct tgsi_full_instruction *tgsi_inst,
335 enum qop op, struct qreg *src, int i)
336 {
337 struct qreg dst = qir_get_temp(c);
338 qir_emit(c, qir_inst(op, dst,
339 src[0 * 4 + 0],
340 c->undef));
341 return dst;
342 }
343
344 static struct qreg
345 tgsi_to_qir_rcp(struct vc4_compile *c,
346 struct tgsi_full_instruction *tgsi_inst,
347 enum qop op, struct qreg *src, int i)
348 {
349 struct qreg x = src[0 * 4 + 0];
350 struct qreg r = qir_RCP(c, x);
351
352 /* Apply a Newton-Raphson step to improve the accuracy. */
353 r = qir_FMUL(c, r, qir_FSUB(c,
354 qir_uniform_f(c, 2.0),
355 qir_FMUL(c, x, r)));
356
357 return r;
358 }
359
360 static struct qreg
361 tgsi_to_qir_rsq(struct vc4_compile *c,
362 struct tgsi_full_instruction *tgsi_inst,
363 enum qop op, struct qreg *src, int i)
364 {
365 struct qreg x = src[0 * 4 + 0];
366 struct qreg r = qir_RSQ(c, x);
367
368 /* Apply a Newton-Raphson step to improve the accuracy. */
369 r = qir_FMUL(c, r, qir_FSUB(c,
370 qir_uniform_f(c, 1.5),
371 qir_FMUL(c,
372 qir_uniform_f(c, 0.5),
373 qir_FMUL(c, x,
374 qir_FMUL(c, r, r)))));
375
376 return r;
377 }
378
379 static struct qreg
380 qir_srgb_decode(struct vc4_compile *c, struct qreg srgb)
381 {
382 struct qreg low = qir_FMUL(c, srgb, qir_uniform_f(c, 1.0 / 12.92));
383 struct qreg high = qir_POW(c,
384 qir_FMUL(c,
385 qir_FADD(c,
386 srgb,
387 qir_uniform_f(c, 0.055)),
388 qir_uniform_f(c, 1.0 / 1.055)),
389 qir_uniform_f(c, 2.4));
390
391 qir_SF(c, qir_FSUB(c, srgb, qir_uniform_f(c, 0.04045)));
392 return qir_SEL_X_Y_NS(c, low, high);
393 }
394
395 static struct qreg
396 qir_srgb_encode(struct vc4_compile *c, struct qreg linear)
397 {
398 struct qreg low = qir_FMUL(c, linear, qir_uniform_f(c, 12.92));
399 struct qreg high = qir_FSUB(c,
400 qir_FMUL(c,
401 qir_uniform_f(c, 1.055),
402 qir_POW(c,
403 linear,
404 qir_uniform_f(c, 0.41666))),
405 qir_uniform_f(c, 0.055));
406
407 qir_SF(c, qir_FSUB(c, linear, qir_uniform_f(c, 0.0031308)));
408 return qir_SEL_X_Y_NS(c, low, high);
409 }
410
411 static struct qreg
412 tgsi_to_qir_umul(struct vc4_compile *c,
413 struct tgsi_full_instruction *tgsi_inst,
414 enum qop op, struct qreg *src, int i)
415 {
416 struct qreg src0_hi = qir_SHR(c, src[0 * 4 + i],
417 qir_uniform_ui(c, 16));
418 struct qreg src0_lo = qir_AND(c, src[0 * 4 + i],
419 qir_uniform_ui(c, 0xffff));
420 struct qreg src1_hi = qir_SHR(c, src[1 * 4 + i],
421 qir_uniform_ui(c, 16));
422 struct qreg src1_lo = qir_AND(c, src[1 * 4 + i],
423 qir_uniform_ui(c, 0xffff));
424
425 struct qreg hilo = qir_MUL24(c, src0_hi, src1_lo);
426 struct qreg lohi = qir_MUL24(c, src0_lo, src1_hi);
427 struct qreg lolo = qir_MUL24(c, src0_lo, src1_lo);
428
429 return qir_ADD(c, lolo, qir_SHL(c,
430 qir_ADD(c, hilo, lohi),
431 qir_uniform_ui(c, 16)));
432 }
433
434 static struct qreg
435 tgsi_to_qir_umad(struct vc4_compile *c,
436 struct tgsi_full_instruction *tgsi_inst,
437 enum qop op, struct qreg *src, int i)
438 {
439 return qir_ADD(c, tgsi_to_qir_umul(c, NULL, 0, src, i), src[2 * 4 + i]);
440 }
441
442 static struct qreg
443 tgsi_to_qir_idiv(struct vc4_compile *c,
444 struct tgsi_full_instruction *tgsi_inst,
445 enum qop op, struct qreg *src, int i)
446 {
447 return qir_FTOI(c, qir_FMUL(c,
448 qir_ITOF(c, src[0 * 4 + i]),
449 qir_RCP(c, qir_ITOF(c, src[1 * 4 + i]))));
450 }
451
452 static struct qreg
453 tgsi_to_qir_ineg(struct vc4_compile *c,
454 struct tgsi_full_instruction *tgsi_inst,
455 enum qop op, struct qreg *src, int i)
456 {
457 return qir_SUB(c, qir_uniform_ui(c, 0), src[0 * 4 + i]);
458 }
459
460 static struct qreg
461 tgsi_to_qir_seq(struct vc4_compile *c,
462 struct tgsi_full_instruction *tgsi_inst,
463 enum qop op, struct qreg *src, int i)
464 {
465 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
466 return qir_SEL_X_0_ZS(c, qir_uniform_f(c, 1.0));
467 }
468
469 static struct qreg
470 tgsi_to_qir_sne(struct vc4_compile *c,
471 struct tgsi_full_instruction *tgsi_inst,
472 enum qop op, struct qreg *src, int i)
473 {
474 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
475 return qir_SEL_X_0_ZC(c, qir_uniform_f(c, 1.0));
476 }
477
478 static struct qreg
479 tgsi_to_qir_slt(struct vc4_compile *c,
480 struct tgsi_full_instruction *tgsi_inst,
481 enum qop op, struct qreg *src, int i)
482 {
483 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
484 return qir_SEL_X_0_NS(c, qir_uniform_f(c, 1.0));
485 }
486
487 static struct qreg
488 tgsi_to_qir_sge(struct vc4_compile *c,
489 struct tgsi_full_instruction *tgsi_inst,
490 enum qop op, struct qreg *src, int i)
491 {
492 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
493 return qir_SEL_X_0_NC(c, qir_uniform_f(c, 1.0));
494 }
495
496 static struct qreg
497 tgsi_to_qir_fseq(struct vc4_compile *c,
498 struct tgsi_full_instruction *tgsi_inst,
499 enum qop op, struct qreg *src, int i)
500 {
501 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
502 return qir_SEL_X_0_ZS(c, qir_uniform_ui(c, ~0));
503 }
504
505 static struct qreg
506 tgsi_to_qir_fsne(struct vc4_compile *c,
507 struct tgsi_full_instruction *tgsi_inst,
508 enum qop op, struct qreg *src, int i)
509 {
510 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
511 return qir_SEL_X_0_ZC(c, qir_uniform_ui(c, ~0));
512 }
513
514 static struct qreg
515 tgsi_to_qir_fslt(struct vc4_compile *c,
516 struct tgsi_full_instruction *tgsi_inst,
517 enum qop op, struct qreg *src, int i)
518 {
519 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
520 return qir_SEL_X_0_NS(c, qir_uniform_ui(c, ~0));
521 }
522
523 static struct qreg
524 tgsi_to_qir_fsge(struct vc4_compile *c,
525 struct tgsi_full_instruction *tgsi_inst,
526 enum qop op, struct qreg *src, int i)
527 {
528 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i]));
529 return qir_SEL_X_0_NC(c, qir_uniform_ui(c, ~0));
530 }
531
532 static struct qreg
533 tgsi_to_qir_useq(struct vc4_compile *c,
534 struct tgsi_full_instruction *tgsi_inst,
535 enum qop op, struct qreg *src, int i)
536 {
537 qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i]));
538 return qir_SEL_X_0_ZS(c, qir_uniform_ui(c, ~0));
539 }
540
541 static struct qreg
542 tgsi_to_qir_usne(struct vc4_compile *c,
543 struct tgsi_full_instruction *tgsi_inst,
544 enum qop op, struct qreg *src, int i)
545 {
546 qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i]));
547 return qir_SEL_X_0_ZC(c, qir_uniform_ui(c, ~0));
548 }
549
550 static struct qreg
551 tgsi_to_qir_islt(struct vc4_compile *c,
552 struct tgsi_full_instruction *tgsi_inst,
553 enum qop op, struct qreg *src, int i)
554 {
555 qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i]));
556 return qir_SEL_X_0_NS(c, qir_uniform_ui(c, ~0));
557 }
558
559 static struct qreg
560 tgsi_to_qir_isge(struct vc4_compile *c,
561 struct tgsi_full_instruction *tgsi_inst,
562 enum qop op, struct qreg *src, int i)
563 {
564 qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i]));
565 return qir_SEL_X_0_NC(c, qir_uniform_ui(c, ~0));
566 }
567
568 static struct qreg
569 tgsi_to_qir_cmp(struct vc4_compile *c,
570 struct tgsi_full_instruction *tgsi_inst,
571 enum qop op, struct qreg *src, int i)
572 {
573 qir_SF(c, src[0 * 4 + i]);
574 return qir_SEL_X_Y_NS(c,
575 src[1 * 4 + i],
576 src[2 * 4 + i]);
577 }
578
579 static struct qreg
580 tgsi_to_qir_ucmp(struct vc4_compile *c,
581 struct tgsi_full_instruction *tgsi_inst,
582 enum qop op, struct qreg *src, int i)
583 {
584 qir_SF(c, src[0 * 4 + i]);
585 return qir_SEL_X_Y_ZC(c,
586 src[1 * 4 + i],
587 src[2 * 4 + i]);
588 }
589
590 static struct qreg
591 tgsi_to_qir_mad(struct vc4_compile *c,
592 struct tgsi_full_instruction *tgsi_inst,
593 enum qop op, struct qreg *src, int i)
594 {
595 return qir_FADD(c,
596 qir_FMUL(c,
597 src[0 * 4 + i],
598 src[1 * 4 + i]),
599 src[2 * 4 + i]);
600 }
601
602 static struct qreg
603 tgsi_to_qir_lrp(struct vc4_compile *c,
604 struct tgsi_full_instruction *tgsi_inst,
605 enum qop op, struct qreg *src, int i)
606 {
607 struct qreg src0 = src[0 * 4 + i];
608 struct qreg src1 = src[1 * 4 + i];
609 struct qreg src2 = src[2 * 4 + i];
610
611 /* LRP is:
612 * src0 * src1 + (1 - src0) * src2.
613 * -> src0 * src1 + src2 - src0 * src2
614 * -> src2 + src0 * (src1 - src2)
615 */
616 return qir_FADD(c, src2, qir_FMUL(c, src0, qir_FSUB(c, src1, src2)));
617
618 }
619
620 static void
621 tgsi_to_qir_tex(struct vc4_compile *c,
622 struct tgsi_full_instruction *tgsi_inst,
623 enum qop op, struct qreg *src)
624 {
625 assert(!tgsi_inst->Instruction.Saturate);
626
627 struct qreg s = src[0 * 4 + 0];
628 struct qreg t = src[0 * 4 + 1];
629 struct qreg r = src[0 * 4 + 2];
630 uint32_t unit = tgsi_inst->Src[1].Register.Index;
631 bool is_txl = tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXL;
632
633 struct qreg proj = c->undef;
634 if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXP) {
635 proj = qir_RCP(c, src[0 * 4 + 3]);
636 s = qir_FMUL(c, s, proj);
637 t = qir_FMUL(c, t, proj);
638 }
639
640 struct qreg texture_u[] = {
641 add_uniform(c, QUNIFORM_TEXTURE_CONFIG_P0, unit),
642 add_uniform(c, QUNIFORM_TEXTURE_CONFIG_P1, unit),
643 add_uniform(c, QUNIFORM_CONSTANT, 0),
644 add_uniform(c, QUNIFORM_CONSTANT, 0),
645 };
646 uint32_t next_texture_u = 0;
647
648 /* There is no native support for GL texture rectangle coordinates, so
649 * we have to rescale from ([0, width], [0, height]) to ([0, 1], [0,
650 * 1]).
651 */
652 if (tgsi_inst->Texture.Texture == TGSI_TEXTURE_RECT ||
653 tgsi_inst->Texture.Texture == TGSI_TEXTURE_SHADOWRECT) {
654 s = qir_FMUL(c, s,
655 get_temp_for_uniform(c,
656 QUNIFORM_TEXRECT_SCALE_X,
657 unit));
658 t = qir_FMUL(c, t,
659 get_temp_for_uniform(c,
660 QUNIFORM_TEXRECT_SCALE_Y,
661 unit));
662 }
663
664 if (tgsi_inst->Texture.Texture == TGSI_TEXTURE_CUBE ||
665 tgsi_inst->Texture.Texture == TGSI_TEXTURE_SHADOWCUBE ||
666 is_txl) {
667 texture_u[2] = add_uniform(c, QUNIFORM_TEXTURE_CONFIG_P2,
668 unit | (is_txl << 16));
669 }
670
671 if (tgsi_inst->Texture.Texture == TGSI_TEXTURE_CUBE ||
672 tgsi_inst->Texture.Texture == TGSI_TEXTURE_SHADOWCUBE) {
673 struct qreg ma = qir_FMAXABS(c, qir_FMAXABS(c, s, t), r);
674 struct qreg rcp_ma = qir_RCP(c, ma);
675 s = qir_FMUL(c, s, rcp_ma);
676 t = qir_FMUL(c, t, rcp_ma);
677 r = qir_FMUL(c, r, rcp_ma);
678
679 qir_TEX_R(c, r, texture_u[next_texture_u++]);
680 } else if (c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
681 c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP ||
682 c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP_TO_BORDER ||
683 c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP) {
684 qir_TEX_R(c, get_temp_for_uniform(c, QUNIFORM_TEXTURE_BORDER_COLOR, unit),
685 texture_u[next_texture_u++]);
686 }
687
688 if (c->key->tex[unit].wrap_s == PIPE_TEX_WRAP_CLAMP) {
689 s = qir_FMIN(c, qir_FMAX(c, s, qir_uniform_f(c, 0.0)),
690 qir_uniform_f(c, 1.0));
691 }
692
693 if (c->key->tex[unit].wrap_t == PIPE_TEX_WRAP_CLAMP) {
694 t = qir_FMIN(c, qir_FMAX(c, t, qir_uniform_f(c, 0.0)),
695 qir_uniform_f(c, 1.0));
696 }
697
698 qir_TEX_T(c, t, texture_u[next_texture_u++]);
699
700 if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXB ||
701 tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXL)
702 qir_TEX_B(c, src[0 * 4 + 3], texture_u[next_texture_u++]);
703
704 qir_TEX_S(c, s, texture_u[next_texture_u++]);
705
706 c->num_texture_samples++;
707 struct qreg r4 = qir_TEX_RESULT(c);
708
709 enum pipe_format format = c->key->tex[unit].format;
710
711 struct qreg unpacked[4];
712 if (util_format_is_depth_or_stencil(format)) {
713 struct qreg depthf = qir_ITOF(c, qir_SHR(c, r4,
714 qir_uniform_ui(c, 8)));
715 struct qreg normalized = qir_FMUL(c, depthf,
716 qir_uniform_f(c, 1.0f/0xffffff));
717
718 struct qreg depth_output;
719
720 struct qreg one = qir_uniform_f(c, 1.0f);
721 if (c->key->tex[unit].compare_mode) {
722 struct qreg compare = src[0 * 4 + 2];
723
724 if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXP)
725 compare = qir_FMUL(c, compare, proj);
726
727 switch (c->key->tex[unit].compare_func) {
728 case PIPE_FUNC_NEVER:
729 depth_output = qir_uniform_f(c, 0.0f);
730 break;
731 case PIPE_FUNC_ALWAYS:
732 depth_output = one;
733 break;
734 case PIPE_FUNC_EQUAL:
735 qir_SF(c, qir_FSUB(c, compare, normalized));
736 depth_output = qir_SEL_X_0_ZS(c, one);
737 break;
738 case PIPE_FUNC_NOTEQUAL:
739 qir_SF(c, qir_FSUB(c, compare, normalized));
740 depth_output = qir_SEL_X_0_ZC(c, one);
741 break;
742 case PIPE_FUNC_GREATER:
743 qir_SF(c, qir_FSUB(c, compare, normalized));
744 depth_output = qir_SEL_X_0_NC(c, one);
745 break;
746 case PIPE_FUNC_GEQUAL:
747 qir_SF(c, qir_FSUB(c, normalized, compare));
748 depth_output = qir_SEL_X_0_NS(c, one);
749 break;
750 case PIPE_FUNC_LESS:
751 qir_SF(c, qir_FSUB(c, compare, normalized));
752 depth_output = qir_SEL_X_0_NS(c, one);
753 break;
754 case PIPE_FUNC_LEQUAL:
755 qir_SF(c, qir_FSUB(c, normalized, compare));
756 depth_output = qir_SEL_X_0_NC(c, one);
757 break;
758 }
759 } else {
760 depth_output = normalized;
761 }
762
763 for (int i = 0; i < 4; i++)
764 unpacked[i] = depth_output;
765 } else {
766 for (int i = 0; i < 4; i++)
767 unpacked[i] = qir_R4_UNPACK(c, r4, i);
768 }
769
770 const uint8_t *format_swiz = vc4_get_format_swizzle(format);
771 struct qreg texture_output[4];
772 for (int i = 0; i < 4; i++) {
773 texture_output[i] = get_swizzled_channel(c, unpacked,
774 format_swiz[i]);
775 }
776
777 if (util_format_is_srgb(format)) {
778 for (int i = 0; i < 3; i++)
779 texture_output[i] = qir_srgb_decode(c,
780 texture_output[i]);
781 }
782
783 for (int i = 0; i < 4; i++) {
784 if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i)))
785 continue;
786
787 update_dst(c, tgsi_inst, i,
788 get_swizzled_channel(c, texture_output,
789 c->key->tex[unit].swizzle[i]));
790 }
791 }
792
793 static struct qreg
794 tgsi_to_qir_trunc(struct vc4_compile *c,
795 struct tgsi_full_instruction *tgsi_inst,
796 enum qop op, struct qreg *src, int i)
797 {
798 return qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
799 }
800
801 /**
802 * Computes x - floor(x), which is tricky because our FTOI truncates (rounds
803 * to zero).
804 */
805 static struct qreg
806 tgsi_to_qir_frc(struct vc4_compile *c,
807 struct tgsi_full_instruction *tgsi_inst,
808 enum qop op, struct qreg *src, int i)
809 {
810 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
811 struct qreg diff = qir_FSUB(c, src[0 * 4 + i], trunc);
812 qir_SF(c, diff);
813 return qir_SEL_X_Y_NS(c,
814 qir_FADD(c, diff, qir_uniform_f(c, 1.0)),
815 diff);
816 }
817
818 /**
819 * Computes floor(x), which is tricky because our FTOI truncates (rounds to
820 * zero).
821 */
822 static struct qreg
823 tgsi_to_qir_flr(struct vc4_compile *c,
824 struct tgsi_full_instruction *tgsi_inst,
825 enum qop op, struct qreg *src, int i)
826 {
827 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
828
829 /* This will be < 0 if we truncated and the truncation was of a value
830 * that was < 0 in the first place.
831 */
832 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], trunc));
833
834 return qir_SEL_X_Y_NS(c,
835 qir_FSUB(c, trunc, qir_uniform_f(c, 1.0)),
836 trunc);
837 }
838
839 /**
840 * Computes ceil(x), which is tricky because our FTOI truncates (rounds to
841 * zero).
842 */
843 static struct qreg
844 tgsi_to_qir_ceil(struct vc4_compile *c,
845 struct tgsi_full_instruction *tgsi_inst,
846 enum qop op, struct qreg *src, int i)
847 {
848 struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i]));
849
850 /* This will be < 0 if we truncated and the truncation was of a value
851 * that was > 0 in the first place.
852 */
853 qir_SF(c, qir_FSUB(c, trunc, src[0 * 4 + i]));
854
855 return qir_SEL_X_Y_NS(c,
856 qir_FADD(c, trunc, qir_uniform_f(c, 1.0)),
857 trunc);
858 }
859
860 static struct qreg
861 tgsi_to_qir_abs(struct vc4_compile *c,
862 struct tgsi_full_instruction *tgsi_inst,
863 enum qop op, struct qreg *src, int i)
864 {
865 struct qreg arg = src[0 * 4 + i];
866 return qir_FMAXABS(c, arg, arg);
867 }
868
869 /* Note that this instruction replicates its result from the x channel */
870 static struct qreg
871 tgsi_to_qir_sin(struct vc4_compile *c,
872 struct tgsi_full_instruction *tgsi_inst,
873 enum qop op, struct qreg *src, int i)
874 {
875 float coeff[] = {
876 -2.0 * M_PI,
877 pow(2.0 * M_PI, 3) / (3 * 2 * 1),
878 -pow(2.0 * M_PI, 5) / (5 * 4 * 3 * 2 * 1),
879 pow(2.0 * M_PI, 7) / (7 * 6 * 5 * 4 * 3 * 2 * 1),
880 -pow(2.0 * M_PI, 9) / (9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
881 };
882
883 struct qreg scaled_x =
884 qir_FMUL(c,
885 src[0 * 4 + 0],
886 qir_uniform_f(c, 1.0f / (M_PI * 2.0f)));
887
888 struct qreg x = qir_FADD(c,
889 tgsi_to_qir_frc(c, NULL, 0, &scaled_x, 0),
890 qir_uniform_f(c, -0.5));
891 struct qreg x2 = qir_FMUL(c, x, x);
892 struct qreg sum = qir_FMUL(c, x, qir_uniform_f(c, coeff[0]));
893 for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
894 x = qir_FMUL(c, x, x2);
895 sum = qir_FADD(c,
896 sum,
897 qir_FMUL(c,
898 x,
899 qir_uniform_f(c, coeff[i])));
900 }
901 return sum;
902 }
903
904 /* Note that this instruction replicates its result from the x channel */
905 static struct qreg
906 tgsi_to_qir_cos(struct vc4_compile *c,
907 struct tgsi_full_instruction *tgsi_inst,
908 enum qop op, struct qreg *src, int i)
909 {
910 float coeff[] = {
911 -1.0f,
912 pow(2.0 * M_PI, 2) / (2 * 1),
913 -pow(2.0 * M_PI, 4) / (4 * 3 * 2 * 1),
914 pow(2.0 * M_PI, 6) / (6 * 5 * 4 * 3 * 2 * 1),
915 -pow(2.0 * M_PI, 8) / (8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
916 pow(2.0 * M_PI, 10) / (10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1),
917 };
918
919 struct qreg scaled_x =
920 qir_FMUL(c, src[0 * 4 + 0],
921 qir_uniform_f(c, 1.0f / (M_PI * 2.0f)));
922 struct qreg x_frac = qir_FADD(c,
923 tgsi_to_qir_frc(c, NULL, 0, &scaled_x, 0),
924 qir_uniform_f(c, -0.5));
925
926 struct qreg sum = qir_uniform_f(c, coeff[0]);
927 struct qreg x2 = qir_FMUL(c, x_frac, x_frac);
928 struct qreg x = x2; /* Current x^2, x^4, or x^6 */
929 for (int i = 1; i < ARRAY_SIZE(coeff); i++) {
930 if (i != 1)
931 x = qir_FMUL(c, x, x2);
932
933 struct qreg mul = qir_FMUL(c,
934 x,
935 qir_uniform_f(c, coeff[i]));
936 if (i == 0)
937 sum = mul;
938 else
939 sum = qir_FADD(c, sum, mul);
940 }
941 return sum;
942 }
943
944 static struct qreg
945 tgsi_to_qir_clamp(struct vc4_compile *c,
946 struct tgsi_full_instruction *tgsi_inst,
947 enum qop op, struct qreg *src, int i)
948 {
949 return qir_FMAX(c, qir_FMIN(c,
950 src[0 * 4 + i],
951 src[2 * 4 + i]),
952 src[1 * 4 + i]);
953 }
954
955 static struct qreg
956 tgsi_to_qir_ssg(struct vc4_compile *c,
957 struct tgsi_full_instruction *tgsi_inst,
958 enum qop op, struct qreg *src, int i)
959 {
960 qir_SF(c, src[0 * 4 + i]);
961 return qir_SEL_X_Y_NC(c,
962 qir_SEL_X_0_ZC(c, qir_uniform_f(c, 1.0)),
963 qir_uniform_f(c, -1.0));
964 }
965
966 /* Compare to tgsi_to_qir_flr() for the floor logic. */
967 static struct qreg
968 tgsi_to_qir_arl(struct vc4_compile *c,
969 struct tgsi_full_instruction *tgsi_inst,
970 enum qop op, struct qreg *src, int i)
971 {
972 struct qreg trunc = qir_FTOI(c, src[0 * 4 + i]);
973 struct qreg scaled = qir_SHL(c, trunc, qir_uniform_ui(c, 4));
974
975 qir_SF(c, qir_FSUB(c, src[0 * 4 + i], qir_ITOF(c, trunc)));
976
977 return qir_SEL_X_Y_NS(c, qir_SUB(c, scaled, qir_uniform_ui(c, 4)),
978 scaled);
979 }
980
981 static struct qreg
982 tgsi_to_qir_uarl(struct vc4_compile *c,
983 struct tgsi_full_instruction *tgsi_inst,
984 enum qop op, struct qreg *src, int i)
985 {
986 return qir_SHL(c, src[0 * 4 + i], qir_uniform_ui(c, 4));
987 }
988
989 static struct qreg
990 get_channel_from_vpm(struct vc4_compile *c,
991 struct qreg *vpm_reads,
992 uint8_t swiz,
993 const struct util_format_description *desc)
994 {
995 const struct util_format_channel_description *chan =
996 &desc->channel[swiz];
997 struct qreg temp;
998
999 if (swiz > UTIL_FORMAT_SWIZZLE_W)
1000 return get_swizzled_channel(c, vpm_reads, swiz);
1001 else if (chan->size == 32 &&
1002 chan->type == UTIL_FORMAT_TYPE_FLOAT) {
1003 return get_swizzled_channel(c, vpm_reads, swiz);
1004 } else if (chan->size == 32 &&
1005 chan->type == UTIL_FORMAT_TYPE_SIGNED) {
1006 if (chan->normalized) {
1007 return qir_FMUL(c,
1008 qir_ITOF(c, vpm_reads[swiz]),
1009 qir_uniform_f(c,
1010 1.0 / 0x7fffffff));
1011 } else {
1012 return qir_ITOF(c, vpm_reads[swiz]);
1013 }
1014 } else if (chan->size == 8 &&
1015 (chan->type == UTIL_FORMAT_TYPE_UNSIGNED ||
1016 chan->type == UTIL_FORMAT_TYPE_SIGNED)) {
1017 struct qreg vpm = vpm_reads[0];
1018 if (chan->type == UTIL_FORMAT_TYPE_SIGNED) {
1019 temp = qir_XOR(c, vpm, qir_uniform_ui(c, 0x80808080));
1020 if (chan->normalized) {
1021 return qir_FSUB(c, qir_FMUL(c,
1022 qir_UNPACK_8_F(c, temp, swiz),
1023 qir_uniform_f(c, 2.0)),
1024 qir_uniform_f(c, 1.0));
1025 } else {
1026 return qir_FADD(c,
1027 qir_ITOF(c,
1028 qir_UNPACK_8_I(c, temp,
1029 swiz)),
1030 qir_uniform_f(c, -128.0));
1031 }
1032 } else {
1033 if (chan->normalized) {
1034 return qir_UNPACK_8_F(c, vpm, swiz);
1035 } else {
1036 return qir_ITOF(c, qir_UNPACK_8_I(c, vpm, swiz));
1037 }
1038 }
1039 } else if (chan->size == 16 &&
1040 (chan->type == UTIL_FORMAT_TYPE_UNSIGNED ||
1041 chan->type == UTIL_FORMAT_TYPE_SIGNED)) {
1042 struct qreg vpm = vpm_reads[swiz / 2];
1043
1044 /* Note that UNPACK_16F eats a half float, not ints, so we use
1045 * UNPACK_16_I for all of these.
1046 */
1047 if (chan->type == UTIL_FORMAT_TYPE_SIGNED) {
1048 temp = qir_ITOF(c, qir_UNPACK_16_I(c, vpm, swiz % 2));
1049 if (chan->normalized) {
1050 return qir_FMUL(c, temp,
1051 qir_uniform_f(c, 1/32768.0f));
1052 } else {
1053 return temp;
1054 }
1055 } else {
1056 /* UNPACK_16I sign-extends, so we have to emit ANDs. */
1057 temp = vpm;
1058 if (swiz == 1 || swiz == 3)
1059 temp = qir_UNPACK_16_I(c, temp, 1);
1060 temp = qir_AND(c, temp, qir_uniform_ui(c, 0xffff));
1061 temp = qir_ITOF(c, temp);
1062
1063 if (chan->normalized) {
1064 return qir_FMUL(c, temp,
1065 qir_uniform_f(c, 1 / 65535.0));
1066 } else {
1067 return temp;
1068 }
1069 }
1070 } else {
1071 return c->undef;
1072 }
1073 }
1074
1075 static void
1076 emit_vertex_input(struct vc4_compile *c, int attr)
1077 {
1078 enum pipe_format format = c->vs_key->attr_formats[attr];
1079 uint32_t attr_size = util_format_get_blocksize(format);
1080 struct qreg vpm_reads[4];
1081
1082 c->vattr_sizes[attr] = align(attr_size, 4);
1083 for (int i = 0; i < align(attr_size, 4) / 4; i++) {
1084 struct qreg vpm = { QFILE_VPM, attr * 4 + i };
1085 vpm_reads[i] = qir_MOV(c, vpm);
1086 c->num_inputs++;
1087 }
1088
1089 bool format_warned = false;
1090 const struct util_format_description *desc =
1091 util_format_description(format);
1092
1093 for (int i = 0; i < 4; i++) {
1094 uint8_t swiz = desc->swizzle[i];
1095 struct qreg result = get_channel_from_vpm(c, vpm_reads,
1096 swiz, desc);
1097
1098 if (result.file == QFILE_NULL) {
1099 if (!format_warned) {
1100 fprintf(stderr,
1101 "vtx element %d unsupported type: %s\n",
1102 attr, util_format_name(format));
1103 format_warned = true;
1104 }
1105 result = qir_uniform_f(c, 0.0);
1106 }
1107 c->inputs[attr * 4 + i] = result;
1108 }
1109 }
1110
1111 static void
1112 tgsi_to_qir_kill_if(struct vc4_compile *c, struct qreg *src, int i)
1113 {
1114 if (c->discard.file == QFILE_NULL)
1115 c->discard = qir_uniform_f(c, 0.0);
1116 qir_SF(c, src[0 * 4 + i]);
1117 c->discard = qir_SEL_X_Y_NS(c, qir_uniform_f(c, 1.0),
1118 c->discard);
1119 }
1120
1121 static void
1122 emit_fragcoord_input(struct vc4_compile *c, int attr)
1123 {
1124 c->inputs[attr * 4 + 0] = qir_FRAG_X(c);
1125 c->inputs[attr * 4 + 1] = qir_FRAG_Y(c);
1126 c->inputs[attr * 4 + 2] =
1127 qir_FMUL(c,
1128 qir_ITOF(c, qir_FRAG_Z(c)),
1129 qir_uniform_f(c, 1.0 / 0xffffff));
1130 c->inputs[attr * 4 + 3] = qir_RCP(c, qir_FRAG_W(c));
1131 }
1132
1133 static void
1134 emit_point_coord_input(struct vc4_compile *c, int attr)
1135 {
1136 if (c->point_x.file == QFILE_NULL) {
1137 c->point_x = qir_uniform_f(c, 0.0);
1138 c->point_y = qir_uniform_f(c, 0.0);
1139 }
1140
1141 c->inputs[attr * 4 + 0] = c->point_x;
1142 if (c->fs_key->point_coord_upper_left) {
1143 c->inputs[attr * 4 + 1] = qir_FSUB(c,
1144 qir_uniform_f(c, 1.0),
1145 c->point_y);
1146 } else {
1147 c->inputs[attr * 4 + 1] = c->point_y;
1148 }
1149 c->inputs[attr * 4 + 2] = qir_uniform_f(c, 0.0);
1150 c->inputs[attr * 4 + 3] = qir_uniform_f(c, 1.0);
1151 }
1152
1153 static struct qreg
1154 emit_fragment_varying(struct vc4_compile *c, uint8_t semantic,
1155 uint8_t index, uint8_t swizzle)
1156 {
1157 uint32_t i = c->num_input_semantics++;
1158 struct qreg vary = {
1159 QFILE_VARY,
1160 i
1161 };
1162
1163 if (c->num_input_semantics >= c->input_semantics_array_size) {
1164 c->input_semantics_array_size =
1165 MAX2(4, c->input_semantics_array_size * 2);
1166
1167 c->input_semantics = reralloc(c, c->input_semantics,
1168 struct vc4_varying_semantic,
1169 c->input_semantics_array_size);
1170 }
1171
1172 c->input_semantics[i].semantic = semantic;
1173 c->input_semantics[i].index = index;
1174 c->input_semantics[i].swizzle = swizzle;
1175
1176 return qir_VARY_ADD_C(c, qir_FMUL(c, vary, qir_FRAG_W(c)));
1177 }
1178
1179 static void
1180 emit_fragment_input(struct vc4_compile *c, int attr,
1181 struct tgsi_full_declaration *decl)
1182 {
1183 for (int i = 0; i < 4; i++) {
1184 c->inputs[attr * 4 + i] =
1185 emit_fragment_varying(c,
1186 decl->Semantic.Name,
1187 decl->Semantic.Index,
1188 i);
1189 c->num_inputs++;
1190 }
1191 }
1192
1193 static void
1194 emit_face_input(struct vc4_compile *c, int attr)
1195 {
1196 c->inputs[attr * 4 + 0] = qir_FSUB(c,
1197 qir_uniform_f(c, 1.0),
1198 qir_FMUL(c,
1199 qir_ITOF(c, qir_FRAG_REV_FLAG(c)),
1200 qir_uniform_f(c, 2.0)));
1201 c->inputs[attr * 4 + 1] = qir_uniform_f(c, 0.0);
1202 c->inputs[attr * 4 + 2] = qir_uniform_f(c, 0.0);
1203 c->inputs[attr * 4 + 3] = qir_uniform_f(c, 1.0);
1204 }
1205
1206 static void
1207 add_output(struct vc4_compile *c,
1208 uint32_t decl_offset,
1209 uint8_t semantic_name,
1210 uint8_t semantic_index,
1211 uint8_t semantic_swizzle)
1212 {
1213 uint32_t old_array_size = c->outputs_array_size;
1214 resize_qreg_array(c, &c->outputs, &c->outputs_array_size,
1215 decl_offset + 1);
1216
1217 if (old_array_size != c->outputs_array_size) {
1218 c->output_semantics = reralloc(c,
1219 c->output_semantics,
1220 struct vc4_varying_semantic,
1221 c->outputs_array_size);
1222 }
1223
1224 c->output_semantics[decl_offset].semantic = semantic_name;
1225 c->output_semantics[decl_offset].index = semantic_index;
1226 c->output_semantics[decl_offset].swizzle = semantic_swizzle;
1227 }
1228
1229 static void
1230 add_array_info(struct vc4_compile *c, uint32_t array_id,
1231 uint32_t start, uint32_t size)
1232 {
1233 if (array_id >= c->ubo_ranges_array_size) {
1234 c->ubo_ranges_array_size = MAX2(c->ubo_ranges_array_size * 2,
1235 array_id + 1);
1236 c->ubo_ranges = reralloc(c, c->ubo_ranges,
1237 struct vc4_compiler_ubo_range,
1238 c->ubo_ranges_array_size);
1239 }
1240
1241 c->ubo_ranges[array_id].dst_offset = 0;
1242 c->ubo_ranges[array_id].src_offset = start;
1243 c->ubo_ranges[array_id].size = size;
1244 c->ubo_ranges[array_id].used = false;
1245 }
1246
1247 static void
1248 emit_tgsi_declaration(struct vc4_compile *c,
1249 struct tgsi_full_declaration *decl)
1250 {
1251 switch (decl->Declaration.File) {
1252 case TGSI_FILE_TEMPORARY: {
1253 uint32_t old_size = c->temps_array_size;
1254 resize_qreg_array(c, &c->temps, &c->temps_array_size,
1255 (decl->Range.Last + 1) * 4);
1256
1257 for (int i = old_size; i < c->temps_array_size; i++)
1258 c->temps[i] = qir_uniform_ui(c, 0);
1259 break;
1260 }
1261
1262 case TGSI_FILE_INPUT:
1263 resize_qreg_array(c, &c->inputs, &c->inputs_array_size,
1264 (decl->Range.Last + 1) * 4);
1265
1266 for (int i = decl->Range.First;
1267 i <= decl->Range.Last;
1268 i++) {
1269 if (c->stage == QSTAGE_FRAG) {
1270 if (decl->Semantic.Name ==
1271 TGSI_SEMANTIC_POSITION) {
1272 emit_fragcoord_input(c, i);
1273 } else if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) {
1274 emit_face_input(c, i);
1275 } else if (decl->Semantic.Name == TGSI_SEMANTIC_GENERIC &&
1276 (c->fs_key->point_sprite_mask &
1277 (1 << decl->Semantic.Index))) {
1278 emit_point_coord_input(c, i);
1279 } else {
1280 emit_fragment_input(c, i, decl);
1281 }
1282 } else {
1283 emit_vertex_input(c, i);
1284 }
1285 }
1286 break;
1287
1288 case TGSI_FILE_OUTPUT: {
1289 for (int i = 0; i < 4; i++) {
1290 add_output(c,
1291 decl->Range.First * 4 + i,
1292 decl->Semantic.Name,
1293 decl->Semantic.Index,
1294 i);
1295 }
1296
1297 switch (decl->Semantic.Name) {
1298 case TGSI_SEMANTIC_POSITION:
1299 c->output_position_index = decl->Range.First * 4;
1300 break;
1301 case TGSI_SEMANTIC_CLIPVERTEX:
1302 c->output_clipvertex_index = decl->Range.First * 4;
1303 break;
1304 case TGSI_SEMANTIC_COLOR:
1305 c->output_color_index = decl->Range.First * 4;
1306 break;
1307 case TGSI_SEMANTIC_PSIZE:
1308 c->output_point_size_index = decl->Range.First * 4;
1309 break;
1310 }
1311
1312 break;
1313
1314 case TGSI_FILE_CONSTANT:
1315 add_array_info(c,
1316 decl->Array.ArrayID,
1317 decl->Range.First * 16,
1318 (decl->Range.Last -
1319 decl->Range.First + 1) * 16);
1320 break;
1321 }
1322 }
1323 }
1324
1325 static void
1326 emit_tgsi_instruction(struct vc4_compile *c,
1327 struct tgsi_full_instruction *tgsi_inst)
1328 {
1329 static const struct {
1330 enum qop op;
1331 struct qreg (*func)(struct vc4_compile *c,
1332 struct tgsi_full_instruction *tgsi_inst,
1333 enum qop op,
1334 struct qreg *src, int i);
1335 } op_trans[] = {
1336 [TGSI_OPCODE_MOV] = { QOP_MOV, tgsi_to_qir_alu },
1337 [TGSI_OPCODE_ABS] = { 0, tgsi_to_qir_abs },
1338 [TGSI_OPCODE_MUL] = { QOP_FMUL, tgsi_to_qir_alu },
1339 [TGSI_OPCODE_ADD] = { QOP_FADD, tgsi_to_qir_alu },
1340 [TGSI_OPCODE_SUB] = { QOP_FSUB, tgsi_to_qir_alu },
1341 [TGSI_OPCODE_MIN] = { QOP_FMIN, tgsi_to_qir_alu },
1342 [TGSI_OPCODE_MAX] = { QOP_FMAX, tgsi_to_qir_alu },
1343 [TGSI_OPCODE_F2I] = { QOP_FTOI, tgsi_to_qir_alu },
1344 [TGSI_OPCODE_I2F] = { QOP_ITOF, tgsi_to_qir_alu },
1345 [TGSI_OPCODE_UADD] = { QOP_ADD, tgsi_to_qir_alu },
1346 [TGSI_OPCODE_USHR] = { QOP_SHR, tgsi_to_qir_alu },
1347 [TGSI_OPCODE_ISHR] = { QOP_ASR, tgsi_to_qir_alu },
1348 [TGSI_OPCODE_SHL] = { QOP_SHL, tgsi_to_qir_alu },
1349 [TGSI_OPCODE_IMIN] = { QOP_MIN, tgsi_to_qir_alu },
1350 [TGSI_OPCODE_IMAX] = { QOP_MAX, tgsi_to_qir_alu },
1351 [TGSI_OPCODE_AND] = { QOP_AND, tgsi_to_qir_alu },
1352 [TGSI_OPCODE_OR] = { QOP_OR, tgsi_to_qir_alu },
1353 [TGSI_OPCODE_XOR] = { QOP_XOR, tgsi_to_qir_alu },
1354 [TGSI_OPCODE_NOT] = { QOP_NOT, tgsi_to_qir_alu },
1355
1356 [TGSI_OPCODE_UMUL] = { 0, tgsi_to_qir_umul },
1357 [TGSI_OPCODE_UMAD] = { 0, tgsi_to_qir_umad },
1358 [TGSI_OPCODE_IDIV] = { 0, tgsi_to_qir_idiv },
1359 [TGSI_OPCODE_INEG] = { 0, tgsi_to_qir_ineg },
1360
1361 [TGSI_OPCODE_SEQ] = { 0, tgsi_to_qir_seq },
1362 [TGSI_OPCODE_SNE] = { 0, tgsi_to_qir_sne },
1363 [TGSI_OPCODE_SGE] = { 0, tgsi_to_qir_sge },
1364 [TGSI_OPCODE_SLT] = { 0, tgsi_to_qir_slt },
1365 [TGSI_OPCODE_FSEQ] = { 0, tgsi_to_qir_fseq },
1366 [TGSI_OPCODE_FSNE] = { 0, tgsi_to_qir_fsne },
1367 [TGSI_OPCODE_FSGE] = { 0, tgsi_to_qir_fsge },
1368 [TGSI_OPCODE_FSLT] = { 0, tgsi_to_qir_fslt },
1369 [TGSI_OPCODE_USEQ] = { 0, tgsi_to_qir_useq },
1370 [TGSI_OPCODE_USNE] = { 0, tgsi_to_qir_usne },
1371 [TGSI_OPCODE_ISGE] = { 0, tgsi_to_qir_isge },
1372 [TGSI_OPCODE_ISLT] = { 0, tgsi_to_qir_islt },
1373
1374 [TGSI_OPCODE_CMP] = { 0, tgsi_to_qir_cmp },
1375 [TGSI_OPCODE_UCMP] = { 0, tgsi_to_qir_ucmp },
1376 [TGSI_OPCODE_MAD] = { 0, tgsi_to_qir_mad },
1377 [TGSI_OPCODE_RCP] = { QOP_RCP, tgsi_to_qir_rcp },
1378 [TGSI_OPCODE_RSQ] = { QOP_RSQ, tgsi_to_qir_rsq },
1379 [TGSI_OPCODE_EX2] = { QOP_EXP2, tgsi_to_qir_scalar },
1380 [TGSI_OPCODE_LG2] = { QOP_LOG2, tgsi_to_qir_scalar },
1381 [TGSI_OPCODE_LRP] = { 0, tgsi_to_qir_lrp },
1382 [TGSI_OPCODE_TRUNC] = { 0, tgsi_to_qir_trunc },
1383 [TGSI_OPCODE_CEIL] = { 0, tgsi_to_qir_ceil },
1384 [TGSI_OPCODE_FRC] = { 0, tgsi_to_qir_frc },
1385 [TGSI_OPCODE_FLR] = { 0, tgsi_to_qir_flr },
1386 [TGSI_OPCODE_SIN] = { 0, tgsi_to_qir_sin },
1387 [TGSI_OPCODE_COS] = { 0, tgsi_to_qir_cos },
1388 [TGSI_OPCODE_CLAMP] = { 0, tgsi_to_qir_clamp },
1389 [TGSI_OPCODE_SSG] = { 0, tgsi_to_qir_ssg },
1390 [TGSI_OPCODE_ARL] = { 0, tgsi_to_qir_arl },
1391 [TGSI_OPCODE_UARL] = { 0, tgsi_to_qir_uarl },
1392 };
1393 static int asdf = 0;
1394 uint32_t tgsi_op = tgsi_inst->Instruction.Opcode;
1395
1396 if (tgsi_op == TGSI_OPCODE_END)
1397 return;
1398
1399 struct qreg src_regs[12];
1400 for (int s = 0; s < 3; s++) {
1401 for (int i = 0; i < 4; i++) {
1402 src_regs[4 * s + i] =
1403 get_src(c, tgsi_inst->Instruction.Opcode,
1404 &tgsi_inst->Src[s], i);
1405 }
1406 }
1407
1408 switch (tgsi_op) {
1409 case TGSI_OPCODE_TEX:
1410 case TGSI_OPCODE_TXP:
1411 case TGSI_OPCODE_TXB:
1412 case TGSI_OPCODE_TXL:
1413 tgsi_to_qir_tex(c, tgsi_inst,
1414 op_trans[tgsi_op].op, src_regs);
1415 return;
1416 case TGSI_OPCODE_KILL:
1417 c->discard = qir_uniform_f(c, 1.0);
1418 return;
1419 case TGSI_OPCODE_KILL_IF:
1420 for (int i = 0; i < 4; i++)
1421 tgsi_to_qir_kill_if(c, src_regs, i);
1422 return;
1423 default:
1424 break;
1425 }
1426
1427 if (tgsi_op > ARRAY_SIZE(op_trans) || !(op_trans[tgsi_op].func)) {
1428 fprintf(stderr, "unknown tgsi inst: ");
1429 tgsi_dump_instruction(tgsi_inst, asdf++);
1430 fprintf(stderr, "\n");
1431 abort();
1432 }
1433
1434 for (int i = 0; i < 4; i++) {
1435 if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i)))
1436 continue;
1437
1438 struct qreg result;
1439
1440 result = op_trans[tgsi_op].func(c, tgsi_inst,
1441 op_trans[tgsi_op].op,
1442 src_regs, i);
1443
1444 if (tgsi_inst->Instruction.Saturate) {
1445 float low = (tgsi_inst->Instruction.Saturate ==
1446 TGSI_SAT_MINUS_PLUS_ONE ? -1.0 : 0.0);
1447 result = qir_FMAX(c,
1448 qir_FMIN(c,
1449 result,
1450 qir_uniform_f(c, 1.0)),
1451 qir_uniform_f(c, low));
1452 }
1453
1454 update_dst(c, tgsi_inst, i, result);
1455 }
1456 }
1457
1458 static void
1459 parse_tgsi_immediate(struct vc4_compile *c, struct tgsi_full_immediate *imm)
1460 {
1461 for (int i = 0; i < 4; i++) {
1462 unsigned n = c->num_consts++;
1463 resize_qreg_array(c, &c->consts, &c->consts_array_size, n + 1);
1464 c->consts[n] = qir_uniform_ui(c, imm->u[i].Uint);
1465 }
1466 }
1467
1468 static struct qreg
1469 vc4_blend_channel(struct vc4_compile *c,
1470 struct qreg *dst,
1471 struct qreg *src,
1472 struct qreg val,
1473 unsigned factor,
1474 int channel)
1475 {
1476 switch(factor) {
1477 case PIPE_BLENDFACTOR_ONE:
1478 return val;
1479 case PIPE_BLENDFACTOR_SRC_COLOR:
1480 return qir_FMUL(c, val, src[channel]);
1481 case PIPE_BLENDFACTOR_SRC_ALPHA:
1482 return qir_FMUL(c, val, src[3]);
1483 case PIPE_BLENDFACTOR_DST_ALPHA:
1484 return qir_FMUL(c, val, dst[3]);
1485 case PIPE_BLENDFACTOR_DST_COLOR:
1486 return qir_FMUL(c, val, dst[channel]);
1487 case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
1488 if (channel != 3) {
1489 return qir_FMUL(c,
1490 val,
1491 qir_FMIN(c,
1492 src[3],
1493 qir_FSUB(c,
1494 qir_uniform_f(c, 1.0),
1495 dst[3])));
1496 } else {
1497 return val;
1498 }
1499 case PIPE_BLENDFACTOR_CONST_COLOR:
1500 return qir_FMUL(c, val,
1501 get_temp_for_uniform(c,
1502 QUNIFORM_BLEND_CONST_COLOR,
1503 channel));
1504 case PIPE_BLENDFACTOR_CONST_ALPHA:
1505 return qir_FMUL(c, val,
1506 get_temp_for_uniform(c,
1507 QUNIFORM_BLEND_CONST_COLOR,
1508 3));
1509 case PIPE_BLENDFACTOR_ZERO:
1510 return qir_uniform_f(c, 0.0);
1511 case PIPE_BLENDFACTOR_INV_SRC_COLOR:
1512 return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0),
1513 src[channel]));
1514 case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
1515 return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0),
1516 src[3]));
1517 case PIPE_BLENDFACTOR_INV_DST_ALPHA:
1518 return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0),
1519 dst[3]));
1520 case PIPE_BLENDFACTOR_INV_DST_COLOR:
1521 return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0),
1522 dst[channel]));
1523 case PIPE_BLENDFACTOR_INV_CONST_COLOR:
1524 return qir_FMUL(c, val,
1525 qir_FSUB(c, qir_uniform_f(c, 1.0),
1526 get_temp_for_uniform(c,
1527 QUNIFORM_BLEND_CONST_COLOR,
1528 channel)));
1529 case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
1530 return qir_FMUL(c, val,
1531 qir_FSUB(c, qir_uniform_f(c, 1.0),
1532 get_temp_for_uniform(c,
1533 QUNIFORM_BLEND_CONST_COLOR,
1534 3)));
1535
1536 default:
1537 case PIPE_BLENDFACTOR_SRC1_COLOR:
1538 case PIPE_BLENDFACTOR_SRC1_ALPHA:
1539 case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
1540 case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
1541 /* Unsupported. */
1542 fprintf(stderr, "Unknown blend factor %d\n", factor);
1543 return val;
1544 }
1545 }
1546
1547 static struct qreg
1548 vc4_blend_func(struct vc4_compile *c,
1549 struct qreg src, struct qreg dst,
1550 unsigned func)
1551 {
1552 switch (func) {
1553 case PIPE_BLEND_ADD:
1554 return qir_FADD(c, src, dst);
1555 case PIPE_BLEND_SUBTRACT:
1556 return qir_FSUB(c, src, dst);
1557 case PIPE_BLEND_REVERSE_SUBTRACT:
1558 return qir_FSUB(c, dst, src);
1559 case PIPE_BLEND_MIN:
1560 return qir_FMIN(c, src, dst);
1561 case PIPE_BLEND_MAX:
1562 return qir_FMAX(c, src, dst);
1563
1564 default:
1565 /* Unsupported. */
1566 fprintf(stderr, "Unknown blend func %d\n", func);
1567 return src;
1568
1569 }
1570 }
1571
1572 /**
1573 * Implements fixed function blending in shader code.
1574 *
1575 * VC4 doesn't have any hardware support for blending. Instead, you read the
1576 * current contents of the destination from the tile buffer after having
1577 * waited for the scoreboard (which is handled by vc4_qpu_emit.c), then do
1578 * math using your output color and that destination value, and update the
1579 * output color appropriately.
1580 */
1581 static void
1582 vc4_blend(struct vc4_compile *c, struct qreg *result,
1583 struct qreg *dst_color, struct qreg *src_color)
1584 {
1585 struct pipe_rt_blend_state *blend = &c->fs_key->blend;
1586
1587 if (!blend->blend_enable) {
1588 for (int i = 0; i < 4; i++)
1589 result[i] = src_color[i];
1590 return;
1591 }
1592
1593 struct qreg src_blend[4], dst_blend[4];
1594 for (int i = 0; i < 3; i++) {
1595 src_blend[i] = vc4_blend_channel(c,
1596 dst_color, src_color,
1597 src_color[i],
1598 blend->rgb_src_factor, i);
1599 dst_blend[i] = vc4_blend_channel(c,
1600 dst_color, src_color,
1601 dst_color[i],
1602 blend->rgb_dst_factor, i);
1603 }
1604 src_blend[3] = vc4_blend_channel(c,
1605 dst_color, src_color,
1606 src_color[3],
1607 blend->alpha_src_factor, 3);
1608 dst_blend[3] = vc4_blend_channel(c,
1609 dst_color, src_color,
1610 dst_color[3],
1611 blend->alpha_dst_factor, 3);
1612
1613 for (int i = 0; i < 3; i++) {
1614 result[i] = vc4_blend_func(c,
1615 src_blend[i], dst_blend[i],
1616 blend->rgb_func);
1617 }
1618 result[3] = vc4_blend_func(c,
1619 src_blend[3], dst_blend[3],
1620 blend->alpha_func);
1621 }
1622
1623 static void
1624 clip_distance_discard(struct vc4_compile *c)
1625 {
1626 for (int i = 0; i < PIPE_MAX_CLIP_PLANES; i++) {
1627 if (!(c->key->ucp_enables & (1 << i)))
1628 continue;
1629
1630 struct qreg dist = emit_fragment_varying(c,
1631 TGSI_SEMANTIC_CLIPDIST,
1632 i,
1633 TGSI_SWIZZLE_X);
1634
1635 qir_SF(c, dist);
1636
1637 if (c->discard.file == QFILE_NULL)
1638 c->discard = qir_uniform_f(c, 0.0);
1639
1640 c->discard = qir_SEL_X_Y_NS(c, qir_uniform_f(c, 1.0),
1641 c->discard);
1642 }
1643 }
1644
1645 static void
1646 alpha_test_discard(struct vc4_compile *c)
1647 {
1648 struct qreg src_alpha;
1649 struct qreg alpha_ref = get_temp_for_uniform(c, QUNIFORM_ALPHA_REF, 0);
1650
1651 if (!c->fs_key->alpha_test)
1652 return;
1653
1654 if (c->output_color_index != -1)
1655 src_alpha = c->outputs[c->output_color_index + 3];
1656 else
1657 src_alpha = qir_uniform_f(c, 1.0);
1658
1659 if (c->discard.file == QFILE_NULL)
1660 c->discard = qir_uniform_f(c, 0.0);
1661
1662 switch (c->fs_key->alpha_test_func) {
1663 case PIPE_FUNC_NEVER:
1664 c->discard = qir_uniform_f(c, 1.0);
1665 break;
1666 case PIPE_FUNC_ALWAYS:
1667 break;
1668 case PIPE_FUNC_EQUAL:
1669 qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref));
1670 c->discard = qir_SEL_X_Y_ZS(c, c->discard,
1671 qir_uniform_f(c, 1.0));
1672 break;
1673 case PIPE_FUNC_NOTEQUAL:
1674 qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref));
1675 c->discard = qir_SEL_X_Y_ZC(c, c->discard,
1676 qir_uniform_f(c, 1.0));
1677 break;
1678 case PIPE_FUNC_GREATER:
1679 qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref));
1680 c->discard = qir_SEL_X_Y_NC(c, c->discard,
1681 qir_uniform_f(c, 1.0));
1682 break;
1683 case PIPE_FUNC_GEQUAL:
1684 qir_SF(c, qir_FSUB(c, alpha_ref, src_alpha));
1685 c->discard = qir_SEL_X_Y_NS(c, c->discard,
1686 qir_uniform_f(c, 1.0));
1687 break;
1688 case PIPE_FUNC_LESS:
1689 qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref));
1690 c->discard = qir_SEL_X_Y_NS(c, c->discard,
1691 qir_uniform_f(c, 1.0));
1692 break;
1693 case PIPE_FUNC_LEQUAL:
1694 qir_SF(c, qir_FSUB(c, alpha_ref, src_alpha));
1695 c->discard = qir_SEL_X_Y_NC(c, c->discard,
1696 qir_uniform_f(c, 1.0));
1697 break;
1698 }
1699 }
1700
1701 static struct qreg
1702 vc4_logicop(struct vc4_compile *c, struct qreg src, struct qreg dst)
1703 {
1704 switch (c->fs_key->logicop_func) {
1705 case PIPE_LOGICOP_CLEAR:
1706 return qir_uniform_f(c, 0.0);
1707 case PIPE_LOGICOP_NOR:
1708 return qir_NOT(c, qir_OR(c, src, dst));
1709 case PIPE_LOGICOP_AND_INVERTED:
1710 return qir_AND(c, qir_NOT(c, src), dst);
1711 case PIPE_LOGICOP_COPY_INVERTED:
1712 return qir_NOT(c, src);
1713 case PIPE_LOGICOP_AND_REVERSE:
1714 return qir_AND(c, src, qir_NOT(c, dst));
1715 case PIPE_LOGICOP_INVERT:
1716 return qir_NOT(c, dst);
1717 case PIPE_LOGICOP_XOR:
1718 return qir_XOR(c, src, dst);
1719 case PIPE_LOGICOP_NAND:
1720 return qir_NOT(c, qir_AND(c, src, dst));
1721 case PIPE_LOGICOP_AND:
1722 return qir_AND(c, src, dst);
1723 case PIPE_LOGICOP_EQUIV:
1724 return qir_NOT(c, qir_XOR(c, src, dst));
1725 case PIPE_LOGICOP_NOOP:
1726 return dst;
1727 case PIPE_LOGICOP_OR_INVERTED:
1728 return qir_OR(c, qir_NOT(c, src), dst);
1729 case PIPE_LOGICOP_OR_REVERSE:
1730 return qir_OR(c, src, qir_NOT(c, dst));
1731 case PIPE_LOGICOP_OR:
1732 return qir_OR(c, src, dst);
1733 case PIPE_LOGICOP_SET:
1734 return qir_uniform_ui(c, ~0);
1735 case PIPE_LOGICOP_COPY:
1736 default:
1737 return src;
1738 }
1739 }
1740
1741 static void
1742 emit_frag_end(struct vc4_compile *c)
1743 {
1744 clip_distance_discard(c);
1745 alpha_test_discard(c);
1746
1747 enum pipe_format color_format = c->fs_key->color_format;
1748 const uint8_t *format_swiz = vc4_get_format_swizzle(color_format);
1749 struct qreg tlb_read_color[4] = { c->undef, c->undef, c->undef, c->undef };
1750 struct qreg dst_color[4] = { c->undef, c->undef, c->undef, c->undef };
1751 struct qreg linear_dst_color[4] = { c->undef, c->undef, c->undef, c->undef };
1752 struct qreg packed_dst_color = c->undef;
1753
1754 if (c->fs_key->blend.blend_enable ||
1755 c->fs_key->blend.colormask != 0xf ||
1756 c->fs_key->logicop_func != PIPE_LOGICOP_COPY) {
1757 struct qreg r4 = qir_TLB_COLOR_READ(c);
1758 for (int i = 0; i < 4; i++)
1759 tlb_read_color[i] = qir_R4_UNPACK(c, r4, i);
1760 for (int i = 0; i < 4; i++) {
1761 dst_color[i] = get_swizzled_channel(c,
1762 tlb_read_color,
1763 format_swiz[i]);
1764 if (util_format_is_srgb(color_format) && i != 3) {
1765 linear_dst_color[i] =
1766 qir_srgb_decode(c, dst_color[i]);
1767 } else {
1768 linear_dst_color[i] = dst_color[i];
1769 }
1770 }
1771
1772 /* Save the packed value for logic ops. Can't reuse r4
1773 * becuase other things might smash it (like sRGB)
1774 */
1775 packed_dst_color = qir_MOV(c, r4);
1776 }
1777
1778 struct qreg blend_color[4];
1779 struct qreg undef_array[4] = {
1780 c->undef, c->undef, c->undef, c->undef
1781 };
1782 vc4_blend(c, blend_color, linear_dst_color,
1783 (c->output_color_index != -1 ?
1784 c->outputs + c->output_color_index :
1785 undef_array));
1786
1787 if (util_format_is_srgb(color_format)) {
1788 for (int i = 0; i < 3; i++)
1789 blend_color[i] = qir_srgb_encode(c, blend_color[i]);
1790 }
1791
1792 /* If the bit isn't set in the color mask, then just return the
1793 * original dst color, instead.
1794 */
1795 for (int i = 0; i < 4; i++) {
1796 if (!(c->fs_key->blend.colormask & (1 << i))) {
1797 blend_color[i] = dst_color[i];
1798 }
1799 }
1800
1801 /* Debug: Sometimes you're getting a black output and just want to see
1802 * if the FS is getting executed at all. Spam magenta into the color
1803 * output.
1804 */
1805 if (0) {
1806 blend_color[0] = qir_uniform_f(c, 1.0);
1807 blend_color[1] = qir_uniform_f(c, 0.0);
1808 blend_color[2] = qir_uniform_f(c, 1.0);
1809 blend_color[3] = qir_uniform_f(c, 0.5);
1810 }
1811
1812 struct qreg swizzled_outputs[4];
1813 for (int i = 0; i < 4; i++) {
1814 swizzled_outputs[i] = get_swizzled_channel(c, blend_color,
1815 format_swiz[i]);
1816 }
1817
1818 if (c->discard.file != QFILE_NULL)
1819 qir_TLB_DISCARD_SETUP(c, c->discard);
1820
1821 if (c->fs_key->stencil_enabled) {
1822 qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 0));
1823 if (c->fs_key->stencil_twoside) {
1824 qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 1));
1825 }
1826 if (c->fs_key->stencil_full_writemasks) {
1827 qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 2));
1828 }
1829 }
1830
1831 if (c->fs_key->depth_enabled) {
1832 struct qreg z;
1833 if (c->output_position_index != -1) {
1834 z = qir_FTOI(c, qir_FMUL(c, c->outputs[c->output_position_index + 2],
1835 qir_uniform_f(c, 0xffffff)));
1836 } else {
1837 z = qir_FRAG_Z(c);
1838 }
1839 qir_TLB_Z_WRITE(c, z);
1840 }
1841
1842 struct qreg packed_color = c->undef;
1843 for (int i = 0; i < 4; i++) {
1844 if (swizzled_outputs[i].file == QFILE_NULL)
1845 continue;
1846 if (packed_color.file == QFILE_NULL) {
1847 packed_color = qir_PACK_8888_F(c, swizzled_outputs[i]);
1848 } else {
1849 packed_color = qir_PACK_8_F(c,
1850 packed_color,
1851 swizzled_outputs[i],
1852 i);
1853 }
1854 }
1855
1856 if (packed_color.file == QFILE_NULL)
1857 packed_color = qir_uniform_ui(c, 0);
1858
1859 if (c->fs_key->logicop_func != PIPE_LOGICOP_COPY) {
1860 packed_color = vc4_logicop(c, packed_color, packed_dst_color);
1861 }
1862
1863 qir_emit(c, qir_inst(QOP_TLB_COLOR_WRITE, c->undef,
1864 packed_color, c->undef));
1865 }
1866
1867 static void
1868 emit_scaled_viewport_write(struct vc4_compile *c, struct qreg rcp_w)
1869 {
1870 struct qreg xyi[2];
1871
1872 for (int i = 0; i < 2; i++) {
1873 struct qreg scale =
1874 add_uniform(c, QUNIFORM_VIEWPORT_X_SCALE + i, 0);
1875
1876 xyi[i] = qir_FTOI(c, qir_FMUL(c,
1877 qir_FMUL(c,
1878 c->outputs[c->output_position_index + i],
1879 scale),
1880 rcp_w));
1881 }
1882
1883 qir_VPM_WRITE(c, qir_PACK_SCALED(c, xyi[0], xyi[1]));
1884 }
1885
1886 static void
1887 emit_zs_write(struct vc4_compile *c, struct qreg rcp_w)
1888 {
1889 struct qreg zscale = add_uniform(c, QUNIFORM_VIEWPORT_Z_SCALE, 0);
1890 struct qreg zoffset = add_uniform(c, QUNIFORM_VIEWPORT_Z_OFFSET, 0);
1891
1892 qir_VPM_WRITE(c, qir_FADD(c, qir_FMUL(c, qir_FMUL(c,
1893 c->outputs[c->output_position_index + 2],
1894 zscale),
1895 rcp_w),
1896 zoffset));
1897 }
1898
1899 static void
1900 emit_rcp_wc_write(struct vc4_compile *c, struct qreg rcp_w)
1901 {
1902 qir_VPM_WRITE(c, rcp_w);
1903 }
1904
1905 static void
1906 emit_point_size_write(struct vc4_compile *c)
1907 {
1908 struct qreg point_size;
1909
1910 if (c->output_point_size_index)
1911 point_size = c->outputs[c->output_point_size_index + 3];
1912 else
1913 point_size = qir_uniform_f(c, 1.0);
1914
1915 /* Workaround: HW-2726 PTB does not handle zero-size points (BCM2835,
1916 * BCM21553).
1917 */
1918 point_size = qir_FMAX(c, point_size, qir_uniform_f(c, .125));
1919
1920 qir_VPM_WRITE(c, point_size);
1921 }
1922
1923 /**
1924 * Emits a VPM read of the stub vertex attribute set up by vc4_draw.c.
1925 *
1926 * The simulator insists that there be at least one vertex attribute, so
1927 * vc4_draw.c will emit one if it wouldn't have otherwise. The simulator also
1928 * insists that all vertex attributes loaded get read by the VS/CS, so we have
1929 * to consume it here.
1930 */
1931 static void
1932 emit_stub_vpm_read(struct vc4_compile *c)
1933 {
1934 if (c->num_inputs)
1935 return;
1936
1937 c->vattr_sizes[0] = 4;
1938 struct qreg vpm = { QFILE_VPM, 0 };
1939 (void)qir_MOV(c, vpm);
1940 c->num_inputs++;
1941 }
1942
1943 static void
1944 emit_ucp_clipdistance(struct vc4_compile *c)
1945 {
1946 unsigned cv;
1947 if (c->output_clipvertex_index != -1)
1948 cv = c->output_clipvertex_index;
1949 else if (c->output_position_index != -1)
1950 cv = c->output_position_index;
1951 else
1952 return;
1953
1954 for (int plane = 0; plane < PIPE_MAX_CLIP_PLANES; plane++) {
1955 if (!(c->key->ucp_enables & (1 << plane)))
1956 continue;
1957
1958 /* Pick the next outputs[] that hasn't been written to, since
1959 * there are no other program writes left to be processed at
1960 * this point. If something had been declared but not written
1961 * (like a w component), we'll just smash over the top of it.
1962 */
1963 uint32_t output_index = c->num_outputs++;
1964 add_output(c, output_index,
1965 TGSI_SEMANTIC_CLIPDIST,
1966 plane,
1967 TGSI_SWIZZLE_X);
1968
1969
1970 struct qreg dist = qir_uniform_f(c, 0.0);
1971 for (int i = 0; i < 4; i++) {
1972 struct qreg pos_chan = c->outputs[cv + i];
1973 struct qreg ucp =
1974 add_uniform(c, QUNIFORM_USER_CLIP_PLANE,
1975 plane * 4 + i);
1976 dist = qir_FADD(c, dist, qir_FMUL(c, pos_chan, ucp));
1977 }
1978
1979 c->outputs[output_index] = dist;
1980 }
1981 }
1982
1983 static void
1984 emit_vert_end(struct vc4_compile *c,
1985 struct vc4_varying_semantic *fs_inputs,
1986 uint32_t num_fs_inputs)
1987 {
1988 struct qreg rcp_w = qir_RCP(c, c->outputs[c->output_position_index + 3]);
1989
1990 emit_stub_vpm_read(c);
1991 emit_ucp_clipdistance(c);
1992
1993 emit_scaled_viewport_write(c, rcp_w);
1994 emit_zs_write(c, rcp_w);
1995 emit_rcp_wc_write(c, rcp_w);
1996 if (c->vs_key->per_vertex_point_size)
1997 emit_point_size_write(c);
1998
1999 for (int i = 0; i < num_fs_inputs; i++) {
2000 struct vc4_varying_semantic *input = &fs_inputs[i];
2001 int j;
2002
2003 for (j = 0; j < c->num_outputs; j++) {
2004 struct vc4_varying_semantic *output =
2005 &c->output_semantics[j];
2006
2007 if (input->semantic == output->semantic &&
2008 input->index == output->index &&
2009 input->swizzle == output->swizzle) {
2010 qir_VPM_WRITE(c, c->outputs[j]);
2011 break;
2012 }
2013 }
2014 /* Emit padding if we didn't find a declared VS output for
2015 * this FS input.
2016 */
2017 if (j == c->num_outputs)
2018 qir_VPM_WRITE(c, qir_uniform_f(c, 0.0));
2019 }
2020 }
2021
2022 static void
2023 emit_coord_end(struct vc4_compile *c)
2024 {
2025 struct qreg rcp_w = qir_RCP(c, c->outputs[c->output_position_index + 3]);
2026
2027 emit_stub_vpm_read(c);
2028
2029 for (int i = 0; i < 4; i++)
2030 qir_VPM_WRITE(c, c->outputs[c->output_position_index + i]);
2031
2032 emit_scaled_viewport_write(c, rcp_w);
2033 emit_zs_write(c, rcp_w);
2034 emit_rcp_wc_write(c, rcp_w);
2035 if (c->vs_key->per_vertex_point_size)
2036 emit_point_size_write(c);
2037 }
2038
2039 static struct vc4_compile *
2040 vc4_shader_tgsi_to_qir(struct vc4_context *vc4, enum qstage stage,
2041 struct vc4_key *key)
2042 {
2043 struct vc4_compile *c = qir_compile_init();
2044 int ret;
2045
2046 c->stage = stage;
2047 for (int i = 0; i < 4; i++)
2048 c->addr[i] = qir_uniform_f(c, 0.0);
2049
2050 c->shader_state = &key->shader_state->base;
2051 c->program_id = key->shader_state->program_id;
2052 c->variant_id = key->shader_state->compiled_variant_count++;
2053
2054 c->key = key;
2055 switch (stage) {
2056 case QSTAGE_FRAG:
2057 c->fs_key = (struct vc4_fs_key *)key;
2058 if (c->fs_key->is_points) {
2059 c->point_x = emit_fragment_varying(c, ~0, ~0, 0);
2060 c->point_y = emit_fragment_varying(c, ~0, ~0, 0);
2061 } else if (c->fs_key->is_lines) {
2062 c->line_x = emit_fragment_varying(c, ~0, ~0, 0);
2063 }
2064 break;
2065 case QSTAGE_VERT:
2066 c->vs_key = (struct vc4_vs_key *)key;
2067 break;
2068 case QSTAGE_COORD:
2069 c->vs_key = (struct vc4_vs_key *)key;
2070 break;
2071 }
2072
2073 const struct tgsi_token *tokens = key->shader_state->base.tokens;
2074 if (c->fs_key && c->fs_key->light_twoside) {
2075 if (!key->shader_state->twoside_tokens) {
2076 const struct tgsi_lowering_config lowering_config = {
2077 .color_two_side = true,
2078 };
2079 struct tgsi_shader_info info;
2080 key->shader_state->twoside_tokens =
2081 tgsi_transform_lowering(&lowering_config,
2082 key->shader_state->base.tokens,
2083 &info);
2084
2085 /* If no transformation occurred, then NULL is
2086 * returned and we just use our original tokens.
2087 */
2088 if (!key->shader_state->twoside_tokens) {
2089 key->shader_state->twoside_tokens =
2090 key->shader_state->base.tokens;
2091 }
2092 }
2093 tokens = key->shader_state->twoside_tokens;
2094 }
2095
2096 ret = tgsi_parse_init(&c->parser, tokens);
2097 assert(ret == TGSI_PARSE_OK);
2098
2099 if (vc4_debug & VC4_DEBUG_TGSI) {
2100 fprintf(stderr, "%s prog %d/%d TGSI:\n",
2101 qir_get_stage_name(c->stage),
2102 c->program_id, c->variant_id);
2103 tgsi_dump(tokens, 0);
2104 }
2105
2106 while (!tgsi_parse_end_of_tokens(&c->parser)) {
2107 tgsi_parse_token(&c->parser);
2108
2109 switch (c->parser.FullToken.Token.Type) {
2110 case TGSI_TOKEN_TYPE_DECLARATION:
2111 emit_tgsi_declaration(c,
2112 &c->parser.FullToken.FullDeclaration);
2113 break;
2114
2115 case TGSI_TOKEN_TYPE_INSTRUCTION:
2116 emit_tgsi_instruction(c,
2117 &c->parser.FullToken.FullInstruction);
2118 break;
2119
2120 case TGSI_TOKEN_TYPE_IMMEDIATE:
2121 parse_tgsi_immediate(c,
2122 &c->parser.FullToken.FullImmediate);
2123 break;
2124 }
2125 }
2126
2127 switch (stage) {
2128 case QSTAGE_FRAG:
2129 emit_frag_end(c);
2130 break;
2131 case QSTAGE_VERT:
2132 emit_vert_end(c,
2133 vc4->prog.fs->input_semantics,
2134 vc4->prog.fs->num_inputs);
2135 break;
2136 case QSTAGE_COORD:
2137 emit_coord_end(c);
2138 break;
2139 }
2140
2141 tgsi_parse_free(&c->parser);
2142
2143 qir_optimize(c);
2144
2145 if (vc4_debug & VC4_DEBUG_QIR) {
2146 fprintf(stderr, "%s prog %d/%d QIR:\n",
2147 qir_get_stage_name(c->stage),
2148 c->program_id, c->variant_id);
2149 qir_dump(c);
2150 }
2151 qir_reorder_uniforms(c);
2152 vc4_generate_code(vc4, c);
2153
2154 if (vc4_debug & VC4_DEBUG_SHADERDB) {
2155 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d instructions\n",
2156 qir_get_stage_name(c->stage),
2157 c->program_id, c->variant_id,
2158 c->qpu_inst_count);
2159 fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d uniforms\n",
2160 qir_get_stage_name(c->stage),
2161 c->program_id, c->variant_id,
2162 c->num_uniforms);
2163 }
2164
2165 return c;
2166 }
2167
2168 static void *
2169 vc4_shader_state_create(struct pipe_context *pctx,
2170 const struct pipe_shader_state *cso)
2171 {
2172 struct vc4_context *vc4 = vc4_context(pctx);
2173 struct vc4_uncompiled_shader *so = CALLOC_STRUCT(vc4_uncompiled_shader);
2174 if (!so)
2175 return NULL;
2176
2177 const struct tgsi_lowering_config lowering_config = {
2178 .lower_DST = true,
2179 .lower_XPD = true,
2180 .lower_SCS = true,
2181 .lower_POW = true,
2182 .lower_LIT = true,
2183 .lower_EXP = true,
2184 .lower_LOG = true,
2185 .lower_DP4 = true,
2186 .lower_DP3 = true,
2187 .lower_DPH = true,
2188 .lower_DP2 = true,
2189 .lower_DP2A = true,
2190 };
2191
2192 struct tgsi_shader_info info;
2193 so->base.tokens = tgsi_transform_lowering(&lowering_config, cso->tokens, &info);
2194 if (!so->base.tokens)
2195 so->base.tokens = tgsi_dup_tokens(cso->tokens);
2196 so->program_id = vc4->next_uncompiled_program_id++;
2197
2198 return so;
2199 }
2200
2201 static void
2202 copy_uniform_state_to_shader(struct vc4_compiled_shader *shader,
2203 struct vc4_compile *c)
2204 {
2205 int count = c->num_uniforms;
2206 struct vc4_shader_uniform_info *uinfo = &shader->uniforms;
2207
2208 uinfo->count = count;
2209 uinfo->data = ralloc_array(shader, uint32_t, count);
2210 memcpy(uinfo->data, c->uniform_data,
2211 count * sizeof(*uinfo->data));
2212 uinfo->contents = ralloc_array(shader, enum quniform_contents, count);
2213 memcpy(uinfo->contents, c->uniform_contents,
2214 count * sizeof(*uinfo->contents));
2215 uinfo->num_texture_samples = c->num_texture_samples;
2216 }
2217
2218 static struct vc4_compiled_shader *
2219 vc4_get_compiled_shader(struct vc4_context *vc4, enum qstage stage,
2220 struct vc4_key *key)
2221 {
2222 struct hash_table *ht;
2223 uint32_t key_size;
2224 if (stage == QSTAGE_FRAG) {
2225 ht = vc4->fs_cache;
2226 key_size = sizeof(struct vc4_fs_key);
2227 } else {
2228 ht = vc4->vs_cache;
2229 key_size = sizeof(struct vc4_vs_key);
2230 }
2231
2232 struct vc4_compiled_shader *shader;
2233 struct hash_entry *entry = _mesa_hash_table_search(ht, key);
2234 if (entry)
2235 return entry->data;
2236
2237 struct vc4_compile *c = vc4_shader_tgsi_to_qir(vc4, stage, key);
2238 shader = rzalloc(NULL, struct vc4_compiled_shader);
2239
2240 shader->program_id = vc4->next_compiled_program_id++;
2241 if (stage == QSTAGE_FRAG) {
2242 bool input_live[c->num_input_semantics];
2243 struct simple_node *node;
2244
2245 memset(input_live, 0, sizeof(input_live));
2246 foreach(node, &c->instructions) {
2247 struct qinst *inst = (struct qinst *)node;
2248 for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
2249 if (inst->src[i].file == QFILE_VARY)
2250 input_live[inst->src[i].index] = true;
2251 }
2252 }
2253
2254 shader->input_semantics = ralloc_array(shader,
2255 struct vc4_varying_semantic,
2256 c->num_input_semantics);
2257
2258 for (int i = 0; i < c->num_input_semantics; i++) {
2259 struct vc4_varying_semantic *sem = &c->input_semantics[i];
2260
2261 if (!input_live[i])
2262 continue;
2263
2264 /* Skip non-VS-output inputs. */
2265 if (sem->semantic == (uint8_t)~0)
2266 continue;
2267
2268 if (sem->semantic == TGSI_SEMANTIC_COLOR ||
2269 sem->semantic == TGSI_SEMANTIC_BCOLOR) {
2270 shader->color_inputs |= (1 << shader->num_inputs);
2271 }
2272
2273 shader->input_semantics[shader->num_inputs] = *sem;
2274 shader->num_inputs++;
2275 }
2276 } else {
2277 shader->num_inputs = c->num_inputs;
2278
2279 shader->vattr_offsets[0] = 0;
2280 for (int i = 0; i < 8; i++) {
2281 shader->vattr_offsets[i + 1] =
2282 shader->vattr_offsets[i] + c->vattr_sizes[i];
2283
2284 if (c->vattr_sizes[i])
2285 shader->vattrs_live |= (1 << i);
2286 }
2287 }
2288
2289 copy_uniform_state_to_shader(shader, c);
2290 shader->bo = vc4_bo_alloc_mem(vc4->screen, c->qpu_insts,
2291 c->qpu_inst_count * sizeof(uint64_t),
2292 "code");
2293
2294 /* Copy the compiler UBO range state to the compiled shader, dropping
2295 * out arrays that were never referenced by an indirect load.
2296 *
2297 * (Note that QIR dead code elimination of an array access still
2298 * leaves that array alive, though)
2299 */
2300 if (c->num_ubo_ranges) {
2301 shader->num_ubo_ranges = c->num_ubo_ranges;
2302 shader->ubo_ranges = ralloc_array(shader, struct vc4_ubo_range,
2303 c->num_ubo_ranges);
2304 uint32_t j = 0;
2305 for (int i = 0; i < c->ubo_ranges_array_size; i++) {
2306 struct vc4_compiler_ubo_range *range =
2307 &c->ubo_ranges[i];
2308 if (!range->used)
2309 continue;
2310
2311 shader->ubo_ranges[j].dst_offset = range->dst_offset;
2312 shader->ubo_ranges[j].src_offset = range->src_offset;
2313 shader->ubo_ranges[j].size = range->size;
2314 shader->ubo_size += c->ubo_ranges[i].size;
2315 j++;
2316 }
2317 }
2318
2319 qir_compile_destroy(c);
2320
2321 struct vc4_key *dup_key;
2322 dup_key = ralloc_size(shader, key_size);
2323 memcpy(dup_key, key, key_size);
2324 _mesa_hash_table_insert(ht, dup_key, shader);
2325
2326 return shader;
2327 }
2328
2329 static void
2330 vc4_setup_shared_key(struct vc4_context *vc4, struct vc4_key *key,
2331 struct vc4_texture_stateobj *texstate)
2332 {
2333 for (int i = 0; i < texstate->num_textures; i++) {
2334 struct pipe_sampler_view *sampler = texstate->textures[i];
2335 struct pipe_sampler_state *sampler_state =
2336 texstate->samplers[i];
2337
2338 if (sampler) {
2339 key->tex[i].format = sampler->format;
2340 key->tex[i].swizzle[0] = sampler->swizzle_r;
2341 key->tex[i].swizzle[1] = sampler->swizzle_g;
2342 key->tex[i].swizzle[2] = sampler->swizzle_b;
2343 key->tex[i].swizzle[3] = sampler->swizzle_a;
2344 key->tex[i].compare_mode = sampler_state->compare_mode;
2345 key->tex[i].compare_func = sampler_state->compare_func;
2346 key->tex[i].wrap_s = sampler_state->wrap_s;
2347 key->tex[i].wrap_t = sampler_state->wrap_t;
2348 }
2349 }
2350
2351 key->ucp_enables = vc4->rasterizer->base.clip_plane_enable;
2352 }
2353
2354 static void
2355 vc4_update_compiled_fs(struct vc4_context *vc4, uint8_t prim_mode)
2356 {
2357 struct vc4_fs_key local_key;
2358 struct vc4_fs_key *key = &local_key;
2359
2360 if (!(vc4->dirty & (VC4_DIRTY_PRIM_MODE |
2361 VC4_DIRTY_BLEND |
2362 VC4_DIRTY_FRAMEBUFFER |
2363 VC4_DIRTY_ZSA |
2364 VC4_DIRTY_RASTERIZER |
2365 VC4_DIRTY_FRAGTEX |
2366 VC4_DIRTY_TEXSTATE |
2367 VC4_DIRTY_UNCOMPILED_FS))) {
2368 return;
2369 }
2370
2371 memset(key, 0, sizeof(*key));
2372 vc4_setup_shared_key(vc4, &key->base, &vc4->fragtex);
2373 key->base.shader_state = vc4->prog.bind_fs;
2374 key->is_points = (prim_mode == PIPE_PRIM_POINTS);
2375 key->is_lines = (prim_mode >= PIPE_PRIM_LINES &&
2376 prim_mode <= PIPE_PRIM_LINE_STRIP);
2377 key->blend = vc4->blend->rt[0];
2378 if (vc4->blend->logicop_enable) {
2379 key->logicop_func = vc4->blend->logicop_func;
2380 } else {
2381 key->logicop_func = PIPE_LOGICOP_COPY;
2382 }
2383 if (vc4->framebuffer.cbufs[0])
2384 key->color_format = vc4->framebuffer.cbufs[0]->format;
2385
2386 key->stencil_enabled = vc4->zsa->stencil_uniforms[0] != 0;
2387 key->stencil_twoside = vc4->zsa->stencil_uniforms[1] != 0;
2388 key->stencil_full_writemasks = vc4->zsa->stencil_uniforms[2] != 0;
2389 key->depth_enabled = (vc4->zsa->base.depth.enabled ||
2390 key->stencil_enabled);
2391 if (vc4->zsa->base.alpha.enabled) {
2392 key->alpha_test = true;
2393 key->alpha_test_func = vc4->zsa->base.alpha.func;
2394 }
2395
2396 if (key->is_points) {
2397 key->point_sprite_mask =
2398 vc4->rasterizer->base.sprite_coord_enable;
2399 key->point_coord_upper_left =
2400 (vc4->rasterizer->base.sprite_coord_mode ==
2401 PIPE_SPRITE_COORD_UPPER_LEFT);
2402 }
2403
2404 key->light_twoside = vc4->rasterizer->base.light_twoside;
2405
2406 struct vc4_compiled_shader *old_fs = vc4->prog.fs;
2407 vc4->prog.fs = vc4_get_compiled_shader(vc4, QSTAGE_FRAG, &key->base);
2408 if (vc4->prog.fs == old_fs)
2409 return;
2410
2411 vc4->dirty |= VC4_DIRTY_COMPILED_FS;
2412 if (vc4->rasterizer->base.flatshade &&
2413 old_fs && vc4->prog.fs->color_inputs != old_fs->color_inputs) {
2414 vc4->dirty |= VC4_DIRTY_FLAT_SHADE_FLAGS;
2415 }
2416 }
2417
2418 static void
2419 vc4_update_compiled_vs(struct vc4_context *vc4, uint8_t prim_mode)
2420 {
2421 struct vc4_vs_key local_key;
2422 struct vc4_vs_key *key = &local_key;
2423
2424 if (!(vc4->dirty & (VC4_DIRTY_PRIM_MODE |
2425 VC4_DIRTY_RASTERIZER |
2426 VC4_DIRTY_VERTTEX |
2427 VC4_DIRTY_TEXSTATE |
2428 VC4_DIRTY_VTXSTATE |
2429 VC4_DIRTY_UNCOMPILED_VS |
2430 VC4_DIRTY_COMPILED_FS))) {
2431 return;
2432 }
2433
2434 memset(key, 0, sizeof(*key));
2435 vc4_setup_shared_key(vc4, &key->base, &vc4->verttex);
2436 key->base.shader_state = vc4->prog.bind_vs;
2437 key->compiled_fs_id = vc4->prog.fs->program_id;
2438
2439 for (int i = 0; i < ARRAY_SIZE(key->attr_formats); i++)
2440 key->attr_formats[i] = vc4->vtx->pipe[i].src_format;
2441
2442 key->per_vertex_point_size =
2443 (prim_mode == PIPE_PRIM_POINTS &&
2444 vc4->rasterizer->base.point_size_per_vertex);
2445
2446 vc4->prog.vs = vc4_get_compiled_shader(vc4, QSTAGE_VERT, &key->base);
2447 key->is_coord = true;
2448 vc4->prog.cs = vc4_get_compiled_shader(vc4, QSTAGE_COORD, &key->base);
2449 }
2450
2451 void
2452 vc4_update_compiled_shaders(struct vc4_context *vc4, uint8_t prim_mode)
2453 {
2454 vc4_update_compiled_fs(vc4, prim_mode);
2455 vc4_update_compiled_vs(vc4, prim_mode);
2456 }
2457
2458 static uint32_t
2459 fs_cache_hash(const void *key)
2460 {
2461 return _mesa_hash_data(key, sizeof(struct vc4_fs_key));
2462 }
2463
2464 static uint32_t
2465 vs_cache_hash(const void *key)
2466 {
2467 return _mesa_hash_data(key, sizeof(struct vc4_vs_key));
2468 }
2469
2470 static bool
2471 fs_cache_compare(const void *key1, const void *key2)
2472 {
2473 return memcmp(key1, key2, sizeof(struct vc4_fs_key)) == 0;
2474 }
2475
2476 static bool
2477 vs_cache_compare(const void *key1, const void *key2)
2478 {
2479 return memcmp(key1, key2, sizeof(struct vc4_vs_key)) == 0;
2480 }
2481
2482 static void
2483 delete_from_cache_if_matches(struct hash_table *ht,
2484 struct hash_entry *entry,
2485 struct vc4_uncompiled_shader *so)
2486 {
2487 const struct vc4_key *key = entry->key;
2488
2489 if (key->shader_state == so) {
2490 struct vc4_compiled_shader *shader = entry->data;
2491 _mesa_hash_table_remove(ht, entry);
2492 vc4_bo_unreference(&shader->bo);
2493 ralloc_free(shader);
2494 }
2495 }
2496
2497 static void
2498 vc4_shader_state_delete(struct pipe_context *pctx, void *hwcso)
2499 {
2500 struct vc4_context *vc4 = vc4_context(pctx);
2501 struct vc4_uncompiled_shader *so = hwcso;
2502
2503 struct hash_entry *entry;
2504 hash_table_foreach(vc4->fs_cache, entry)
2505 delete_from_cache_if_matches(vc4->fs_cache, entry, so);
2506 hash_table_foreach(vc4->vs_cache, entry)
2507 delete_from_cache_if_matches(vc4->vs_cache, entry, so);
2508
2509 if (so->twoside_tokens != so->base.tokens)
2510 free((void *)so->twoside_tokens);
2511 free((void *)so->base.tokens);
2512 free(so);
2513 }
2514
2515 static uint32_t translate_wrap(uint32_t p_wrap, bool using_nearest)
2516 {
2517 switch (p_wrap) {
2518 case PIPE_TEX_WRAP_REPEAT:
2519 return 0;
2520 case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
2521 return 1;
2522 case PIPE_TEX_WRAP_MIRROR_REPEAT:
2523 return 2;
2524 case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
2525 return 3;
2526 case PIPE_TEX_WRAP_CLAMP:
2527 return (using_nearest ? 1 : 3);
2528 default:
2529 fprintf(stderr, "Unknown wrap mode %d\n", p_wrap);
2530 assert(!"not reached");
2531 return 0;
2532 }
2533 }
2534
2535 static void
2536 write_texture_p0(struct vc4_context *vc4,
2537 struct vc4_texture_stateobj *texstate,
2538 uint32_t unit)
2539 {
2540 struct pipe_sampler_view *texture = texstate->textures[unit];
2541 struct vc4_resource *rsc = vc4_resource(texture->texture);
2542
2543 cl_reloc(vc4, &vc4->uniforms, rsc->bo,
2544 VC4_SET_FIELD(rsc->slices[0].offset >> 12, VC4_TEX_P0_OFFSET) |
2545 VC4_SET_FIELD(texture->u.tex.last_level -
2546 texture->u.tex.first_level, VC4_TEX_P0_MIPLVLS) |
2547 VC4_SET_FIELD(texture->target == PIPE_TEXTURE_CUBE,
2548 VC4_TEX_P0_CMMODE) |
2549 VC4_SET_FIELD(rsc->vc4_format & 7, VC4_TEX_P0_TYPE));
2550 }
2551
2552 static void
2553 write_texture_p1(struct vc4_context *vc4,
2554 struct vc4_texture_stateobj *texstate,
2555 uint32_t unit)
2556 {
2557 struct pipe_sampler_view *texture = texstate->textures[unit];
2558 struct vc4_resource *rsc = vc4_resource(texture->texture);
2559 struct pipe_sampler_state *sampler = texstate->samplers[unit];
2560 static const uint8_t minfilter_map[6] = {
2561 VC4_TEX_P1_MINFILT_NEAR_MIP_NEAR,
2562 VC4_TEX_P1_MINFILT_LIN_MIP_NEAR,
2563 VC4_TEX_P1_MINFILT_NEAR_MIP_LIN,
2564 VC4_TEX_P1_MINFILT_LIN_MIP_LIN,
2565 VC4_TEX_P1_MINFILT_NEAREST,
2566 VC4_TEX_P1_MINFILT_LINEAR,
2567 };
2568 static const uint32_t magfilter_map[] = {
2569 [PIPE_TEX_FILTER_NEAREST] = VC4_TEX_P1_MAGFILT_NEAREST,
2570 [PIPE_TEX_FILTER_LINEAR] = VC4_TEX_P1_MAGFILT_LINEAR,
2571 };
2572
2573 bool either_nearest =
2574 (sampler->mag_img_filter == PIPE_TEX_MIPFILTER_NEAREST ||
2575 sampler->min_img_filter == PIPE_TEX_MIPFILTER_NEAREST);
2576
2577 cl_aligned_u32(&vc4->uniforms,
2578 VC4_SET_FIELD(rsc->vc4_format >> 4, VC4_TEX_P1_TYPE4) |
2579 VC4_SET_FIELD(texture->texture->height0 & 2047,
2580 VC4_TEX_P1_HEIGHT) |
2581 VC4_SET_FIELD(texture->texture->width0 & 2047,
2582 VC4_TEX_P1_WIDTH) |
2583 VC4_SET_FIELD(magfilter_map[sampler->mag_img_filter],
2584 VC4_TEX_P1_MAGFILT) |
2585 VC4_SET_FIELD(minfilter_map[sampler->min_mip_filter * 2 +
2586 sampler->min_img_filter],
2587 VC4_TEX_P1_MINFILT) |
2588 VC4_SET_FIELD(translate_wrap(sampler->wrap_s, either_nearest),
2589 VC4_TEX_P1_WRAP_S) |
2590 VC4_SET_FIELD(translate_wrap(sampler->wrap_t, either_nearest),
2591 VC4_TEX_P1_WRAP_T));
2592 }
2593
2594 static void
2595 write_texture_p2(struct vc4_context *vc4,
2596 struct vc4_texture_stateobj *texstate,
2597 uint32_t data)
2598 {
2599 uint32_t unit = data & 0xffff;
2600 struct pipe_sampler_view *texture = texstate->textures[unit];
2601 struct vc4_resource *rsc = vc4_resource(texture->texture);
2602
2603 cl_aligned_u32(&vc4->uniforms,
2604 VC4_SET_FIELD(VC4_TEX_P2_PTYPE_CUBE_MAP_STRIDE,
2605 VC4_TEX_P2_PTYPE) |
2606 VC4_SET_FIELD(rsc->cube_map_stride >> 12, VC4_TEX_P2_CMST) |
2607 VC4_SET_FIELD((data >> 16) & 1, VC4_TEX_P2_BSLOD));
2608 }
2609
2610
2611 #define SWIZ(x,y,z,w) { \
2612 UTIL_FORMAT_SWIZZLE_##x, \
2613 UTIL_FORMAT_SWIZZLE_##y, \
2614 UTIL_FORMAT_SWIZZLE_##z, \
2615 UTIL_FORMAT_SWIZZLE_##w \
2616 }
2617
2618 static void
2619 write_texture_border_color(struct vc4_context *vc4,
2620 struct vc4_texture_stateobj *texstate,
2621 uint32_t unit)
2622 {
2623 struct pipe_sampler_state *sampler = texstate->samplers[unit];
2624 struct pipe_sampler_view *texture = texstate->textures[unit];
2625 struct vc4_resource *rsc = vc4_resource(texture->texture);
2626 union util_color uc;
2627
2628 const struct util_format_description *tex_format_desc =
2629 util_format_description(texture->format);
2630
2631 float border_color[4];
2632 for (int i = 0; i < 4; i++)
2633 border_color[i] = sampler->border_color.f[i];
2634 if (util_format_is_srgb(texture->format)) {
2635 for (int i = 0; i < 3; i++)
2636 border_color[i] =
2637 util_format_linear_to_srgb_float(border_color[i]);
2638 }
2639
2640 /* Turn the border color into the layout of channels that it would
2641 * have when stored as texture contents.
2642 */
2643 float storage_color[4];
2644 util_format_unswizzle_4f(storage_color,
2645 border_color,
2646 tex_format_desc->swizzle);
2647
2648 /* Now, pack so that when the vc4_format-sampled texture contents are
2649 * replaced with our border color, the vc4_get_format_swizzle()
2650 * swizzling will get the right channels.
2651 */
2652 if (util_format_is_depth_or_stencil(texture->format)) {
2653 uc.ui[0] = util_pack_z(PIPE_FORMAT_Z24X8_UNORM,
2654 sampler->border_color.f[0]) << 8;
2655 } else {
2656 switch (rsc->vc4_format) {
2657 default:
2658 case VC4_TEXTURE_TYPE_RGBA8888:
2659 util_pack_color(storage_color,
2660 PIPE_FORMAT_R8G8B8A8_UNORM, &uc);
2661 break;
2662 case VC4_TEXTURE_TYPE_RGBA4444:
2663 util_pack_color(storage_color,
2664 PIPE_FORMAT_A8B8G8R8_UNORM, &uc);
2665 break;
2666 case VC4_TEXTURE_TYPE_RGB565:
2667 util_pack_color(storage_color,
2668 PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
2669 break;
2670 case VC4_TEXTURE_TYPE_ALPHA:
2671 uc.ui[0] = float_to_ubyte(storage_color[0]) << 24;
2672 break;
2673 case VC4_TEXTURE_TYPE_LUMALPHA:
2674 uc.ui[0] = ((float_to_ubyte(storage_color[1]) << 24) |
2675 (float_to_ubyte(storage_color[0]) << 0));
2676 break;
2677 }
2678 }
2679
2680 cl_aligned_u32(&vc4->uniforms, uc.ui[0]);
2681 }
2682
2683 static uint32_t
2684 get_texrect_scale(struct vc4_texture_stateobj *texstate,
2685 enum quniform_contents contents,
2686 uint32_t data)
2687 {
2688 struct pipe_sampler_view *texture = texstate->textures[data];
2689 uint32_t dim;
2690
2691 if (contents == QUNIFORM_TEXRECT_SCALE_X)
2692 dim = texture->texture->width0;
2693 else
2694 dim = texture->texture->height0;
2695
2696 return fui(1.0f / dim);
2697 }
2698
2699 static struct vc4_bo *
2700 vc4_upload_ubo(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
2701 const uint32_t *gallium_uniforms)
2702 {
2703 if (!shader->ubo_size)
2704 return NULL;
2705
2706 struct vc4_bo *ubo = vc4_bo_alloc(vc4->screen, shader->ubo_size, "ubo");
2707 uint32_t *data = vc4_bo_map(ubo);
2708 for (uint32_t i = 0; i < shader->num_ubo_ranges; i++) {
2709 memcpy(data + shader->ubo_ranges[i].dst_offset,
2710 gallium_uniforms + shader->ubo_ranges[i].src_offset,
2711 shader->ubo_ranges[i].size);
2712 }
2713
2714 return ubo;
2715 }
2716
2717 void
2718 vc4_write_uniforms(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
2719 struct vc4_constbuf_stateobj *cb,
2720 struct vc4_texture_stateobj *texstate)
2721 {
2722 struct vc4_shader_uniform_info *uinfo = &shader->uniforms;
2723 const uint32_t *gallium_uniforms = cb->cb[0].user_buffer;
2724 struct vc4_bo *ubo = vc4_upload_ubo(vc4, shader, gallium_uniforms);
2725
2726 cl_ensure_space(&vc4->uniforms, (uinfo->count +
2727 uinfo->num_texture_samples) * 4);
2728
2729 cl_start_shader_reloc(&vc4->uniforms, uinfo->num_texture_samples);
2730
2731 for (int i = 0; i < uinfo->count; i++) {
2732
2733 switch (uinfo->contents[i]) {
2734 case QUNIFORM_CONSTANT:
2735 cl_aligned_u32(&vc4->uniforms, uinfo->data[i]);
2736 break;
2737 case QUNIFORM_UNIFORM:
2738 cl_aligned_u32(&vc4->uniforms,
2739 gallium_uniforms[uinfo->data[i]]);
2740 break;
2741 case QUNIFORM_VIEWPORT_X_SCALE:
2742 cl_aligned_f(&vc4->uniforms, vc4->viewport.scale[0] * 16.0f);
2743 break;
2744 case QUNIFORM_VIEWPORT_Y_SCALE:
2745 cl_aligned_f(&vc4->uniforms, vc4->viewport.scale[1] * 16.0f);
2746 break;
2747
2748 case QUNIFORM_VIEWPORT_Z_OFFSET:
2749 cl_aligned_f(&vc4->uniforms, vc4->viewport.translate[2]);
2750 break;
2751 case QUNIFORM_VIEWPORT_Z_SCALE:
2752 cl_aligned_f(&vc4->uniforms, vc4->viewport.scale[2]);
2753 break;
2754
2755 case QUNIFORM_USER_CLIP_PLANE:
2756 cl_aligned_f(&vc4->uniforms,
2757 vc4->clip.ucp[uinfo->data[i] / 4][uinfo->data[i] % 4]);
2758 break;
2759
2760 case QUNIFORM_TEXTURE_CONFIG_P0:
2761 write_texture_p0(vc4, texstate, uinfo->data[i]);
2762 break;
2763
2764 case QUNIFORM_TEXTURE_CONFIG_P1:
2765 write_texture_p1(vc4, texstate, uinfo->data[i]);
2766 break;
2767
2768 case QUNIFORM_TEXTURE_CONFIG_P2:
2769 write_texture_p2(vc4, texstate, uinfo->data[i]);
2770 break;
2771
2772 case QUNIFORM_UBO_ADDR:
2773 cl_aligned_reloc(vc4, &vc4->uniforms, ubo, 0);
2774 break;
2775
2776 case QUNIFORM_TEXTURE_BORDER_COLOR:
2777 write_texture_border_color(vc4, texstate, uinfo->data[i]);
2778 break;
2779
2780 case QUNIFORM_TEXRECT_SCALE_X:
2781 case QUNIFORM_TEXRECT_SCALE_Y:
2782 cl_aligned_u32(&vc4->uniforms,
2783 get_texrect_scale(texstate,
2784 uinfo->contents[i],
2785 uinfo->data[i]));
2786 break;
2787
2788 case QUNIFORM_BLEND_CONST_COLOR:
2789 cl_aligned_f(&vc4->uniforms,
2790 vc4->blend_color.color[uinfo->data[i]]);
2791 break;
2792
2793 case QUNIFORM_STENCIL:
2794 cl_aligned_u32(&vc4->uniforms,
2795 vc4->zsa->stencil_uniforms[uinfo->data[i]] |
2796 (uinfo->data[i] <= 1 ?
2797 (vc4->stencil_ref.ref_value[uinfo->data[i]] << 8) :
2798 0));
2799 break;
2800
2801 case QUNIFORM_ALPHA_REF:
2802 cl_aligned_f(&vc4->uniforms,
2803 vc4->zsa->base.alpha.ref_value);
2804 break;
2805 }
2806 #if 0
2807 uint32_t written_val = *(uint32_t *)(vc4->uniforms.next - 4);
2808 fprintf(stderr, "%p: %d / 0x%08x (%f)\n",
2809 shader, i, written_val, uif(written_val));
2810 #endif
2811 }
2812 }
2813
2814 static void
2815 vc4_fp_state_bind(struct pipe_context *pctx, void *hwcso)
2816 {
2817 struct vc4_context *vc4 = vc4_context(pctx);
2818 vc4->prog.bind_fs = hwcso;
2819 vc4->dirty |= VC4_DIRTY_UNCOMPILED_FS;
2820 }
2821
2822 static void
2823 vc4_vp_state_bind(struct pipe_context *pctx, void *hwcso)
2824 {
2825 struct vc4_context *vc4 = vc4_context(pctx);
2826 vc4->prog.bind_vs = hwcso;
2827 vc4->dirty |= VC4_DIRTY_UNCOMPILED_VS;
2828 }
2829
2830 void
2831 vc4_program_init(struct pipe_context *pctx)
2832 {
2833 struct vc4_context *vc4 = vc4_context(pctx);
2834
2835 pctx->create_vs_state = vc4_shader_state_create;
2836 pctx->delete_vs_state = vc4_shader_state_delete;
2837
2838 pctx->create_fs_state = vc4_shader_state_create;
2839 pctx->delete_fs_state = vc4_shader_state_delete;
2840
2841 pctx->bind_fs_state = vc4_fp_state_bind;
2842 pctx->bind_vs_state = vc4_vp_state_bind;
2843
2844 vc4->fs_cache = _mesa_hash_table_create(pctx, fs_cache_hash,
2845 fs_cache_compare);
2846 vc4->vs_cache = _mesa_hash_table_create(pctx, vs_cache_hash,
2847 vs_cache_compare);
2848 }
2849
2850 void
2851 vc4_program_fini(struct pipe_context *pctx)
2852 {
2853 struct vc4_context *vc4 = vc4_context(pctx);
2854
2855 struct hash_entry *entry;
2856 hash_table_foreach(vc4->fs_cache, entry) {
2857 struct vc4_compiled_shader *shader = entry->data;
2858 vc4_bo_unreference(&shader->bo);
2859 ralloc_free(shader);
2860 _mesa_hash_table_remove(vc4->fs_cache, entry);
2861 }
2862
2863 hash_table_foreach(vc4->vs_cache, entry) {
2864 struct vc4_compiled_shader *shader = entry->data;
2865 vc4_bo_unreference(&shader->bo);
2866 ralloc_free(shader);
2867 _mesa_hash_table_remove(vc4->vs_cache, entry);
2868 }
2869 }