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gallivm: fix rsqrt failures
[mesa.git] / src / gallium / auxiliary / gallivm / lp_bld_tgsi_soa.c
1 /**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 /**
30 * @file
31 * TGSI to LLVM IR translation -- SoA.
32 *
33 * @author Jose Fonseca <jfonseca@vmware.com>
34 *
35 * Based on tgsi_sse2.c code written by Michal Krol, Keith Whitwell,
36 * Brian Paul, and others.
37 */
38
39 #include "pipe/p_config.h"
40 #include "pipe/p_shader_tokens.h"
41 #include "util/u_debug.h"
42 #include "util/u_math.h"
43 #include "util/u_memory.h"
44 #include "tgsi/tgsi_dump.h"
45 #include "tgsi/tgsi_exec.h"
46 #include "tgsi/tgsi_info.h"
47 #include "tgsi/tgsi_parse.h"
48 #include "tgsi/tgsi_util.h"
49 #include "tgsi/tgsi_scan.h"
50 #include "lp_bld_tgsi_action.h"
51 #include "lp_bld_type.h"
52 #include "lp_bld_const.h"
53 #include "lp_bld_arit.h"
54 #include "lp_bld_bitarit.h"
55 #include "lp_bld_gather.h"
56 #include "lp_bld_init.h"
57 #include "lp_bld_logic.h"
58 #include "lp_bld_swizzle.h"
59 #include "lp_bld_flow.h"
60 #include "lp_bld_quad.h"
61 #include "lp_bld_tgsi.h"
62 #include "lp_bld_limits.h"
63 #include "lp_bld_debug.h"
64 #include "lp_bld_printf.h"
65 #include "lp_bld_sample.h"
66
67
68 static void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context *bld)
69 {
70 LLVMTypeRef int_type = LLVMInt32TypeInContext(bld->gallivm->context);
71 LLVMBuilderRef builder = bld->gallivm->builder;
72
73 mask->bld = bld;
74 mask->has_mask = FALSE;
75 mask->cond_stack_size = 0;
76 mask->loop_stack_size = 0;
77 mask->call_stack_size = 0;
78
79 mask->int_vec_type = lp_build_int_vec_type(bld->gallivm, mask->bld->type);
80 mask->exec_mask = mask->ret_mask = mask->break_mask = mask->cont_mask = mask->cond_mask =
81 LLVMConstAllOnes(mask->int_vec_type);
82
83 mask->loop_limiter = lp_build_alloca(bld->gallivm, int_type, "looplimiter");
84
85 LLVMBuildStore(
86 builder,
87 LLVMConstInt(int_type, LP_MAX_TGSI_LOOP_ITERATIONS, false),
88 mask->loop_limiter);
89 }
90
91 static void lp_exec_mask_update(struct lp_exec_mask *mask)
92 {
93 LLVMBuilderRef builder = mask->bld->gallivm->builder;
94
95 if (mask->loop_stack_size) {
96 /*for loops we need to update the entire mask at runtime */
97 LLVMValueRef tmp;
98 assert(mask->break_mask);
99 tmp = LLVMBuildAnd(builder,
100 mask->cont_mask,
101 mask->break_mask,
102 "maskcb");
103 mask->exec_mask = LLVMBuildAnd(builder,
104 mask->cond_mask,
105 tmp,
106 "maskfull");
107 } else
108 mask->exec_mask = mask->cond_mask;
109
110 if (mask->call_stack_size) {
111 mask->exec_mask = LLVMBuildAnd(builder,
112 mask->exec_mask,
113 mask->ret_mask,
114 "callmask");
115 }
116
117 mask->has_mask = (mask->cond_stack_size > 0 ||
118 mask->loop_stack_size > 0 ||
119 mask->call_stack_size > 0);
120 }
121
122 static void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
123 LLVMValueRef val)
124 {
125 LLVMBuilderRef builder = mask->bld->gallivm->builder;
126
127 assert(mask->cond_stack_size < LP_MAX_TGSI_NESTING);
128 if (mask->cond_stack_size == 0) {
129 assert(mask->cond_mask == LLVMConstAllOnes(mask->int_vec_type));
130 }
131 mask->cond_stack[mask->cond_stack_size++] = mask->cond_mask;
132 assert(LLVMTypeOf(val) == mask->int_vec_type);
133 mask->cond_mask = LLVMBuildAnd(builder,
134 mask->cond_mask,
135 val,
136 "");
137 lp_exec_mask_update(mask);
138 }
139
140 static void lp_exec_mask_cond_invert(struct lp_exec_mask *mask)
141 {
142 LLVMBuilderRef builder = mask->bld->gallivm->builder;
143 LLVMValueRef prev_mask;
144 LLVMValueRef inv_mask;
145
146 assert(mask->cond_stack_size);
147 prev_mask = mask->cond_stack[mask->cond_stack_size - 1];
148 if (mask->cond_stack_size == 1) {
149 assert(prev_mask == LLVMConstAllOnes(mask->int_vec_type));
150 }
151
152 inv_mask = LLVMBuildNot(builder, mask->cond_mask, "");
153
154 mask->cond_mask = LLVMBuildAnd(builder,
155 inv_mask,
156 prev_mask, "");
157 lp_exec_mask_update(mask);
158 }
159
160 static void lp_exec_mask_cond_pop(struct lp_exec_mask *mask)
161 {
162 assert(mask->cond_stack_size);
163 mask->cond_mask = mask->cond_stack[--mask->cond_stack_size];
164 lp_exec_mask_update(mask);
165 }
166
167 static void lp_exec_bgnloop(struct lp_exec_mask *mask)
168 {
169 LLVMBuilderRef builder = mask->bld->gallivm->builder;
170
171 if (mask->loop_stack_size == 0) {
172 assert(mask->loop_block == NULL);
173 assert(mask->cont_mask == LLVMConstAllOnes(mask->int_vec_type));
174 assert(mask->break_mask == LLVMConstAllOnes(mask->int_vec_type));
175 assert(mask->break_var == NULL);
176 }
177
178 assert(mask->loop_stack_size < LP_MAX_TGSI_NESTING);
179
180 mask->loop_stack[mask->loop_stack_size].loop_block = mask->loop_block;
181 mask->loop_stack[mask->loop_stack_size].cont_mask = mask->cont_mask;
182 mask->loop_stack[mask->loop_stack_size].break_mask = mask->break_mask;
183 mask->loop_stack[mask->loop_stack_size].break_var = mask->break_var;
184 ++mask->loop_stack_size;
185
186 mask->break_var = lp_build_alloca(mask->bld->gallivm, mask->int_vec_type, "");
187 LLVMBuildStore(builder, mask->break_mask, mask->break_var);
188
189 mask->loop_block = lp_build_insert_new_block(mask->bld->gallivm, "bgnloop");
190
191 LLVMBuildBr(builder, mask->loop_block);
192 LLVMPositionBuilderAtEnd(builder, mask->loop_block);
193
194 mask->break_mask = LLVMBuildLoad(builder, mask->break_var, "");
195
196 lp_exec_mask_update(mask);
197 }
198
199 static void lp_exec_break(struct lp_exec_mask *mask)
200 {
201 LLVMBuilderRef builder = mask->bld->gallivm->builder;
202 LLVMValueRef exec_mask = LLVMBuildNot(builder,
203 mask->exec_mask,
204 "break");
205
206 mask->break_mask = LLVMBuildAnd(builder,
207 mask->break_mask,
208 exec_mask, "break_full");
209
210 lp_exec_mask_update(mask);
211 }
212
213 static void lp_exec_continue(struct lp_exec_mask *mask)
214 {
215 LLVMBuilderRef builder = mask->bld->gallivm->builder;
216 LLVMValueRef exec_mask = LLVMBuildNot(builder,
217 mask->exec_mask,
218 "");
219
220 mask->cont_mask = LLVMBuildAnd(builder,
221 mask->cont_mask,
222 exec_mask, "");
223
224 lp_exec_mask_update(mask);
225 }
226
227
228 static void lp_exec_endloop(struct gallivm_state *gallivm,
229 struct lp_exec_mask *mask)
230 {
231 LLVMBuilderRef builder = mask->bld->gallivm->builder;
232 LLVMBasicBlockRef endloop;
233 LLVMTypeRef int_type = LLVMInt32TypeInContext(mask->bld->gallivm->context);
234 LLVMTypeRef reg_type = LLVMIntTypeInContext(gallivm->context,
235 mask->bld->type.width *
236 mask->bld->type.length);
237 LLVMValueRef i1cond, i2cond, icond, limiter;
238
239 assert(mask->break_mask);
240
241 /*
242 * Restore the cont_mask, but don't pop
243 */
244 assert(mask->loop_stack_size);
245 mask->cont_mask = mask->loop_stack[mask->loop_stack_size - 1].cont_mask;
246 lp_exec_mask_update(mask);
247
248 /*
249 * Unlike the continue mask, the break_mask must be preserved across loop
250 * iterations
251 */
252 LLVMBuildStore(builder, mask->break_mask, mask->break_var);
253
254 /* Decrement the loop limiter */
255 limiter = LLVMBuildLoad(builder, mask->loop_limiter, "");
256
257 limiter = LLVMBuildSub(
258 builder,
259 limiter,
260 LLVMConstInt(int_type, 1, false),
261 "");
262
263 LLVMBuildStore(builder, limiter, mask->loop_limiter);
264
265 /* i1cond = (mask != 0) */
266 i1cond = LLVMBuildICmp(
267 builder,
268 LLVMIntNE,
269 LLVMBuildBitCast(builder, mask->exec_mask, reg_type, ""),
270 LLVMConstNull(reg_type), "");
271
272 /* i2cond = (looplimiter > 0) */
273 i2cond = LLVMBuildICmp(
274 builder,
275 LLVMIntSGT,
276 limiter,
277 LLVMConstNull(int_type), "");
278
279 /* if( i1cond && i2cond ) */
280 icond = LLVMBuildAnd(builder, i1cond, i2cond, "");
281
282 endloop = lp_build_insert_new_block(mask->bld->gallivm, "endloop");
283
284 LLVMBuildCondBr(builder,
285 icond, mask->loop_block, endloop);
286
287 LLVMPositionBuilderAtEnd(builder, endloop);
288
289 assert(mask->loop_stack_size);
290 --mask->loop_stack_size;
291 mask->loop_block = mask->loop_stack[mask->loop_stack_size].loop_block;
292 mask->cont_mask = mask->loop_stack[mask->loop_stack_size].cont_mask;
293 mask->break_mask = mask->loop_stack[mask->loop_stack_size].break_mask;
294 mask->break_var = mask->loop_stack[mask->loop_stack_size].break_var;
295
296 lp_exec_mask_update(mask);
297 }
298
299 /* stores val into an address pointed to by dst.
300 * mask->exec_mask is used to figure out which bits of val
301 * should be stored into the address
302 * (0 means don't store this bit, 1 means do store).
303 */
304 static void lp_exec_mask_store(struct lp_exec_mask *mask,
305 struct lp_build_context *bld_store,
306 LLVMValueRef pred,
307 LLVMValueRef val,
308 LLVMValueRef dst)
309 {
310 LLVMBuilderRef builder = mask->bld->gallivm->builder;
311
312 /* Mix the predicate and execution mask */
313 if (mask->has_mask) {
314 if (pred) {
315 pred = LLVMBuildAnd(builder, pred, mask->exec_mask, "");
316 } else {
317 pred = mask->exec_mask;
318 }
319 }
320
321 if (pred) {
322 LLVMValueRef real_val, dst_val;
323
324 dst_val = LLVMBuildLoad(builder, dst, "");
325 real_val = lp_build_select(bld_store,
326 pred,
327 val, dst_val);
328
329 LLVMBuildStore(builder, real_val, dst);
330 } else
331 LLVMBuildStore(builder, val, dst);
332 }
333
334 static void lp_exec_mask_call(struct lp_exec_mask *mask,
335 int func,
336 int *pc)
337 {
338 assert(mask->call_stack_size < LP_MAX_TGSI_NESTING);
339 mask->call_stack[mask->call_stack_size].pc = *pc;
340 mask->call_stack[mask->call_stack_size].ret_mask = mask->ret_mask;
341 mask->call_stack_size++;
342 *pc = func;
343 }
344
345 static void lp_exec_mask_ret(struct lp_exec_mask *mask, int *pc)
346 {
347 LLVMBuilderRef builder = mask->bld->gallivm->builder;
348 LLVMValueRef exec_mask;
349
350 if (mask->call_stack_size == 0) {
351 /* returning from main() */
352 *pc = -1;
353 return;
354 }
355 exec_mask = LLVMBuildNot(builder,
356 mask->exec_mask,
357 "ret");
358
359 mask->ret_mask = LLVMBuildAnd(builder,
360 mask->ret_mask,
361 exec_mask, "ret_full");
362
363 lp_exec_mask_update(mask);
364 }
365
366 static void lp_exec_mask_bgnsub(struct lp_exec_mask *mask)
367 {
368 }
369
370 static void lp_exec_mask_endsub(struct lp_exec_mask *mask, int *pc)
371 {
372 assert(mask->call_stack_size);
373 mask->call_stack_size--;
374 *pc = mask->call_stack[mask->call_stack_size].pc;
375 mask->ret_mask = mask->call_stack[mask->call_stack_size].ret_mask;
376 lp_exec_mask_update(mask);
377 }
378
379
380 /**
381 * Return pointer to a temporary register channel (src or dest).
382 * Note that indirect addressing cannot be handled here.
383 * \param index which temporary register
384 * \param chan which channel of the temp register.
385 */
386 LLVMValueRef
387 lp_get_temp_ptr_soa(struct lp_build_tgsi_soa_context *bld,
388 unsigned index,
389 unsigned chan)
390 {
391 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
392 assert(chan < 4);
393 if (bld->indirect_files & (1 << TGSI_FILE_TEMPORARY)) {
394 LLVMValueRef lindex = lp_build_const_int32(bld->bld_base.base.gallivm, index * 4 + chan);
395 return LLVMBuildGEP(builder, bld->temps_array, &lindex, 1, "");
396 }
397 else {
398 return bld->temps[index][chan];
399 }
400 }
401
402 /**
403 * Return pointer to a output register channel (src or dest).
404 * Note that indirect addressing cannot be handled here.
405 * \param index which output register
406 * \param chan which channel of the output register.
407 */
408 LLVMValueRef
409 lp_get_output_ptr(struct lp_build_tgsi_soa_context *bld,
410 unsigned index,
411 unsigned chan)
412 {
413 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
414 assert(chan < 4);
415 if (bld->indirect_files & (1 << TGSI_FILE_OUTPUT)) {
416 LLVMValueRef lindex = lp_build_const_int32(bld->bld_base.base.gallivm,
417 index * 4 + chan);
418 return LLVMBuildGEP(builder, bld->outputs_array, &lindex, 1, "");
419 }
420 else {
421 return bld->outputs[index][chan];
422 }
423 }
424
425 /**
426 * Gather vector.
427 * XXX the lp_build_gather() function should be capable of doing this
428 * with a little work.
429 */
430 static LLVMValueRef
431 build_gather(struct lp_build_context *bld,
432 LLVMValueRef base_ptr,
433 LLVMValueRef indexes)
434 {
435 LLVMBuilderRef builder = bld->gallivm->builder;
436 LLVMValueRef res = bld->undef;
437 unsigned i;
438
439 /*
440 * Loop over elements of index_vec, load scalar value, insert it into 'res'.
441 */
442 for (i = 0; i < bld->type.length; i++) {
443 LLVMValueRef ii = lp_build_const_int32(bld->gallivm, i);
444 LLVMValueRef index = LLVMBuildExtractElement(builder,
445 indexes, ii, "");
446 LLVMValueRef scalar_ptr = LLVMBuildGEP(builder, base_ptr,
447 &index, 1, "gather_ptr");
448 LLVMValueRef scalar = LLVMBuildLoad(builder, scalar_ptr, "");
449
450 res = LLVMBuildInsertElement(builder, res, scalar, ii, "");
451 }
452
453 return res;
454 }
455
456
457 /**
458 * Scatter/store vector.
459 */
460 static void
461 emit_mask_scatter(struct lp_build_tgsi_soa_context *bld,
462 LLVMValueRef base_ptr,
463 LLVMValueRef indexes,
464 LLVMValueRef values,
465 struct lp_exec_mask *mask,
466 LLVMValueRef pred)
467 {
468 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
469 LLVMBuilderRef builder = gallivm->builder;
470 unsigned i;
471
472 /* Mix the predicate and execution mask */
473 if (mask->has_mask) {
474 if (pred) {
475 pred = LLVMBuildAnd(builder, pred, mask->exec_mask, "");
476 }
477 else {
478 pred = mask->exec_mask;
479 }
480 }
481
482 /*
483 * Loop over elements of index_vec, store scalar value.
484 */
485 for (i = 0; i < bld->bld_base.base.type.length; i++) {
486 LLVMValueRef ii = lp_build_const_int32(gallivm, i);
487 LLVMValueRef index = LLVMBuildExtractElement(builder, indexes, ii, "");
488 LLVMValueRef scalar_ptr = LLVMBuildGEP(builder, base_ptr, &index, 1, "scatter_ptr");
489 LLVMValueRef val = LLVMBuildExtractElement(builder, values, ii, "scatter_val");
490 LLVMValueRef scalar_pred = pred ?
491 LLVMBuildExtractElement(builder, pred, ii, "scatter_pred") : NULL;
492
493 if (0)
494 lp_build_printf(gallivm, "scatter %d: val %f at %d %p\n",
495 ii, val, index, scalar_ptr);
496
497 if (scalar_pred) {
498 LLVMValueRef real_val, dst_val;
499 dst_val = LLVMBuildLoad(builder, scalar_ptr, "");
500 real_val = lp_build_select(&bld->elem_bld, scalar_pred, val, dst_val);
501 LLVMBuildStore(builder, real_val, scalar_ptr);
502 }
503 else {
504 LLVMBuildStore(builder, val, scalar_ptr);
505 }
506 }
507 }
508
509
510 /**
511 * Read the current value of the ADDR register, convert the floats to
512 * ints, add the base index and return the vector of offsets.
513 * The offsets will be used to index into the constant buffer or
514 * temporary register file.
515 */
516 static LLVMValueRef
517 get_indirect_index(struct lp_build_tgsi_soa_context *bld,
518 unsigned reg_file, unsigned reg_index,
519 const struct tgsi_src_register *indirect_reg)
520 {
521 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
522 struct lp_build_context *uint_bld = &bld->bld_base.uint_bld;
523 /* always use X component of address register */
524 unsigned swizzle = indirect_reg->SwizzleX;
525 LLVMValueRef base;
526 LLVMValueRef rel;
527 LLVMValueRef max_index;
528 LLVMValueRef index;
529
530 assert(bld->indirect_files & (1 << reg_file));
531
532 base = lp_build_const_int_vec(bld->bld_base.base.gallivm, uint_bld->type, reg_index);
533
534 assert(swizzle < 4);
535 rel = LLVMBuildLoad(builder,
536 bld->addr[indirect_reg->Index][swizzle],
537 "load addr reg");
538
539 index = lp_build_add(uint_bld, base, rel);
540
541 max_index = lp_build_const_int_vec(bld->bld_base.base.gallivm,
542 uint_bld->type,
543 bld->bld_base.info->file_max[reg_file]);
544
545 assert(!uint_bld->type.sign);
546 index = lp_build_min(uint_bld, index, max_index);
547
548 return index;
549 }
550
551 static struct lp_build_context *
552 stype_to_fetch(struct lp_build_tgsi_context * bld_base,
553 enum tgsi_opcode_type stype)
554 {
555 struct lp_build_context *bld_fetch;
556
557 switch (stype) {
558 case TGSI_TYPE_FLOAT:
559 case TGSI_TYPE_UNTYPED:
560 bld_fetch = &bld_base->base;
561 break;
562 case TGSI_TYPE_UNSIGNED:
563 bld_fetch = &bld_base->uint_bld;
564 break;
565 case TGSI_TYPE_SIGNED:
566 bld_fetch = &bld_base->int_bld;
567 break;
568 case TGSI_TYPE_VOID:
569 case TGSI_TYPE_DOUBLE:
570 default:
571 assert(0);
572 bld_fetch = NULL;
573 break;
574 }
575 return bld_fetch;
576 }
577
578 static LLVMValueRef
579 emit_fetch_constant(
580 struct lp_build_tgsi_context * bld_base,
581 const struct tgsi_full_src_register * reg,
582 enum tgsi_opcode_type stype,
583 unsigned swizzle)
584 {
585 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
586 struct gallivm_state *gallivm = bld_base->base.gallivm;
587 LLVMBuilderRef builder = gallivm->builder;
588 struct lp_build_context *uint_bld = &bld_base->uint_bld;
589 LLVMValueRef indirect_index = NULL;
590 struct lp_build_context *bld_fetch = stype_to_fetch(bld_base, stype);
591
592 /* XXX: Handle fetching xyzw components as a vector */
593 assert(swizzle != ~0);
594
595 if (reg->Register.Indirect) {
596 indirect_index = get_indirect_index(bld,
597 reg->Register.File,
598 reg->Register.Index,
599 &reg->Indirect);
600 }
601
602 if (reg->Register.Indirect) {
603 LLVMValueRef swizzle_vec =
604 lp_build_const_int_vec(bld->bld_base.base.gallivm, uint_bld->type, swizzle);
605 LLVMValueRef index_vec; /* index into the const buffer */
606
607 /* index_vec = indirect_index * 4 + swizzle */
608 index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2);
609 index_vec = lp_build_add(uint_bld, index_vec, swizzle_vec);
610
611 /* Gather values from the constant buffer */
612 return build_gather(bld_fetch, bld->consts_ptr, index_vec);
613 }
614 else {
615 LLVMValueRef index; /* index into the const buffer */
616 LLVMValueRef scalar, scalar_ptr;
617
618 index = lp_build_const_int32(gallivm, reg->Register.Index*4 + swizzle);
619
620 scalar_ptr = LLVMBuildGEP(builder, bld->consts_ptr,
621 &index, 1, "");
622
623 if (stype != TGSI_TYPE_FLOAT && stype != TGSI_TYPE_UNTYPED) {
624 LLVMTypeRef ivtype = LLVMPointerType(LLVMInt32TypeInContext(gallivm->context), 0);
625 LLVMValueRef temp_ptr;
626 temp_ptr = LLVMBuildBitCast(builder, scalar_ptr, ivtype, "");
627 scalar = LLVMBuildLoad(builder, temp_ptr, "");
628 } else
629 scalar = LLVMBuildLoad(builder, scalar_ptr, "");
630
631 return lp_build_broadcast_scalar(bld_fetch, scalar);
632 }
633 }
634
635 static LLVMValueRef
636 emit_fetch_immediate(
637 struct lp_build_tgsi_context * bld_base,
638 const struct tgsi_full_src_register * reg,
639 enum tgsi_opcode_type stype,
640 unsigned swizzle)
641 {
642 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
643 LLVMValueRef res = bld->immediates[reg->Register.Index][swizzle];
644 assert(res);
645
646 if (stype == TGSI_TYPE_UNSIGNED) {
647 res = LLVMConstBitCast(res, bld_base->uint_bld.vec_type);
648 } else if (stype == TGSI_TYPE_SIGNED) {
649 res = LLVMConstBitCast(res, bld_base->int_bld.vec_type);
650 }
651 return res;
652 }
653
654 static LLVMValueRef
655 emit_fetch_input(
656 struct lp_build_tgsi_context * bld_base,
657 const struct tgsi_full_src_register * reg,
658 enum tgsi_opcode_type stype,
659 unsigned swizzle)
660 {
661 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
662 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
663 LLVMBuilderRef builder = gallivm->builder;
664 struct lp_build_context *uint_bld = &bld_base->uint_bld;
665 LLVMValueRef indirect_index = NULL;
666 LLVMValueRef res;
667
668 if (reg->Register.Indirect) {
669 indirect_index = get_indirect_index(bld,
670 reg->Register.File,
671 reg->Register.Index,
672 &reg->Indirect);
673 }
674
675 if (reg->Register.Indirect) {
676 LLVMValueRef swizzle_vec =
677 lp_build_const_int_vec(gallivm, uint_bld->type, swizzle);
678 LLVMValueRef length_vec =
679 lp_build_const_int_vec(gallivm, uint_bld->type, bld->bld_base.base.type.length);
680 LLVMValueRef index_vec; /* index into the const buffer */
681 LLVMValueRef inputs_array;
682 LLVMTypeRef float4_ptr_type;
683
684 /* index_vec = (indirect_index * 4 + swizzle) * length */
685 index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2);
686 index_vec = lp_build_add(uint_bld, index_vec, swizzle_vec);
687 index_vec = lp_build_mul(uint_bld, index_vec, length_vec);
688
689 /* cast inputs_array pointer to float* */
690 float4_ptr_type = LLVMPointerType(LLVMFloatTypeInContext(gallivm->context), 0);
691 inputs_array = LLVMBuildBitCast(builder, bld->inputs_array,
692 float4_ptr_type, "");
693
694 /* Gather values from the temporary register array */
695 res = build_gather(&bld_base->base, inputs_array, index_vec);
696 } else {
697 if (bld->indirect_files & (1 << TGSI_FILE_INPUT)) {
698 LLVMValueRef lindex = lp_build_const_int32(gallivm,
699 reg->Register.Index * 4 + swizzle);
700 LLVMValueRef input_ptr = LLVMBuildGEP(builder,
701 bld->inputs_array, &lindex, 1, "");
702 res = LLVMBuildLoad(builder, input_ptr, "");
703 }
704 else {
705 res = bld->inputs[reg->Register.Index][swizzle];
706 }
707 }
708
709 assert(res);
710
711 if (stype == TGSI_TYPE_UNSIGNED) {
712 res = LLVMBuildBitCast(builder, res, bld_base->uint_bld.vec_type, "");
713 } else if (stype == TGSI_TYPE_SIGNED) {
714 res = LLVMBuildBitCast(builder, res, bld_base->int_bld.vec_type, "");
715 }
716
717 return res;
718 }
719
720 static LLVMValueRef
721 emit_fetch_temporary(
722 struct lp_build_tgsi_context * bld_base,
723 const struct tgsi_full_src_register * reg,
724 enum tgsi_opcode_type stype,
725 unsigned swizzle)
726 {
727 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
728 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
729 LLVMBuilderRef builder = gallivm->builder;
730 struct lp_build_context *uint_bld = &bld_base->uint_bld;
731 LLVMValueRef indirect_index = NULL;
732 LLVMValueRef res;
733
734 if (reg->Register.Indirect) {
735 indirect_index = get_indirect_index(bld,
736 reg->Register.File,
737 reg->Register.Index,
738 &reg->Indirect);
739 }
740
741 if (reg->Register.Indirect) {
742 LLVMValueRef swizzle_vec =
743 lp_build_const_int_vec(bld->bld_base.base.gallivm, uint_bld->type, swizzle);
744 LLVMValueRef length_vec =
745 lp_build_const_int_vec(bld->bld_base.base.gallivm, uint_bld->type,
746 bld->bld_base.base.type.length);
747 LLVMValueRef index_vec; /* index into the const buffer */
748 LLVMValueRef temps_array;
749 LLVMTypeRef float4_ptr_type;
750
751 /* index_vec = (indirect_index * 4 + swizzle) * length */
752 index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2);
753 index_vec = lp_build_add(uint_bld, index_vec, swizzle_vec);
754 index_vec = lp_build_mul(uint_bld, index_vec, length_vec);
755
756 /* cast temps_array pointer to float* */
757 float4_ptr_type = LLVMPointerType(LLVMFloatTypeInContext(bld->bld_base.base.gallivm->context), 0);
758 temps_array = LLVMBuildBitCast(builder, bld->temps_array,
759 float4_ptr_type, "");
760
761 /* Gather values from the temporary register array */
762 res = build_gather(&bld_base->base, temps_array, index_vec);
763 }
764 else {
765 LLVMValueRef temp_ptr;
766 if (stype != TGSI_TYPE_FLOAT && stype != TGSI_TYPE_UNTYPED) {
767 LLVMTypeRef itype = LLVMPointerType(bld->bld_base.int_bld.vec_type, 0);
768 LLVMValueRef tint_ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index,
769 swizzle);
770 temp_ptr = LLVMBuildBitCast(builder, tint_ptr, itype, "");
771 } else
772 temp_ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index, swizzle);
773 res = LLVMBuildLoad(builder, temp_ptr, "");
774 if (!res)
775 return bld->bld_base.base.undef;
776 }
777
778 return res;
779 }
780
781 static LLVMValueRef
782 emit_fetch_system_value(
783 struct lp_build_tgsi_context * bld_base,
784 const struct tgsi_full_src_register * reg,
785 enum tgsi_opcode_type stype,
786 unsigned swizzle)
787 {
788 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
789 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
790 const struct tgsi_shader_info *info = bld->bld_base.info;
791 LLVMBuilderRef builder = gallivm->builder;
792 LLVMValueRef res;
793 enum tgsi_opcode_type atype; // Actual type of the value
794
795 assert(!reg->Register.Indirect);
796
797 switch (info->system_value_semantic_name[reg->Register.Index]) {
798 case TGSI_SEMANTIC_INSTANCEID:
799 res = lp_build_broadcast_scalar(&bld_base->uint_bld, bld->system_values.instance_id);
800 atype = TGSI_TYPE_UNSIGNED;
801 break;
802
803 case TGSI_SEMANTIC_VERTEXID:
804 res = bld->system_values.vertex_id;
805 atype = TGSI_TYPE_UNSIGNED;
806 break;
807
808 default:
809 assert(!"unexpected semantic in emit_fetch_system_value");
810 res = bld_base->base.zero;
811 atype = TGSI_TYPE_FLOAT;
812 break;
813 }
814
815 if (atype != stype) {
816 if (stype == TGSI_TYPE_FLOAT) {
817 res = LLVMBuildBitCast(builder, res, bld_base->base.vec_type, "");
818 } else if (stype == TGSI_TYPE_UNSIGNED) {
819 res = LLVMBuildBitCast(builder, res, bld_base->uint_bld.vec_type, "");
820 } else if (stype == TGSI_TYPE_SIGNED) {
821 res = LLVMBuildBitCast(builder, res, bld_base->int_bld.vec_type, "");
822 }
823 }
824
825 return res;
826 }
827
828 /**
829 * Register fetch with derivatives.
830 */
831 static void
832 emit_fetch_deriv(
833 struct lp_build_tgsi_soa_context *bld,
834 LLVMValueRef src,
835 LLVMValueRef *res,
836 LLVMValueRef *ddx,
837 LLVMValueRef *ddy)
838 {
839 if(res)
840 *res = src;
841
842 /* TODO: use interpolation coeffs for inputs */
843
844 if(ddx)
845 *ddx = lp_build_ddx(&bld->bld_base.base, src);
846
847 if(ddy)
848 *ddy = lp_build_ddy(&bld->bld_base.base, src);
849 }
850
851
852 /**
853 * Predicate.
854 */
855 static void
856 emit_fetch_predicate(
857 struct lp_build_tgsi_soa_context *bld,
858 const struct tgsi_full_instruction *inst,
859 LLVMValueRef *pred)
860 {
861 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
862 unsigned index;
863 unsigned char swizzles[4];
864 LLVMValueRef unswizzled[4] = {NULL, NULL, NULL, NULL};
865 LLVMValueRef value;
866 unsigned chan;
867
868 if (!inst->Instruction.Predicate) {
869 TGSI_FOR_EACH_CHANNEL( chan ) {
870 pred[chan] = NULL;
871 }
872 return;
873 }
874
875 swizzles[0] = inst->Predicate.SwizzleX;
876 swizzles[1] = inst->Predicate.SwizzleY;
877 swizzles[2] = inst->Predicate.SwizzleZ;
878 swizzles[3] = inst->Predicate.SwizzleW;
879
880 index = inst->Predicate.Index;
881 assert(index < LP_MAX_TGSI_PREDS);
882
883 TGSI_FOR_EACH_CHANNEL( chan ) {
884 unsigned swizzle = swizzles[chan];
885
886 /*
887 * Only fetch the predicate register channels that are actually listed
888 * in the swizzles
889 */
890 if (!unswizzled[swizzle]) {
891 value = LLVMBuildLoad(builder,
892 bld->preds[index][swizzle], "");
893
894 /*
895 * Convert the value to an integer mask.
896 *
897 * TODO: Short-circuit this comparison -- a D3D setp_xx instructions
898 * is needlessly causing two comparisons due to storing the intermediate
899 * result as float vector instead of an integer mask vector.
900 */
901 value = lp_build_compare(bld->bld_base.base.gallivm,
902 bld->bld_base.base.type,
903 PIPE_FUNC_NOTEQUAL,
904 value,
905 bld->bld_base.base.zero);
906 if (inst->Predicate.Negate) {
907 value = LLVMBuildNot(builder, value, "");
908 }
909
910 unswizzled[swizzle] = value;
911 } else {
912 value = unswizzled[swizzle];
913 }
914
915 pred[chan] = value;
916 }
917 }
918
919 /**
920 * Register store.
921 */
922 static void
923 emit_store_chan(
924 struct lp_build_tgsi_context *bld_base,
925 const struct tgsi_full_instruction *inst,
926 unsigned index,
927 unsigned chan_index,
928 LLVMValueRef pred,
929 LLVMValueRef value)
930 {
931 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
932 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
933 LLVMBuilderRef builder = gallivm->builder;
934 const struct tgsi_full_dst_register *reg = &inst->Dst[index];
935 struct lp_build_context *uint_bld = &bld_base->uint_bld;
936 LLVMValueRef indirect_index = NULL;
937 struct lp_build_context *bld_store;
938 enum tgsi_opcode_type dtype = tgsi_opcode_infer_dst_type(inst->Instruction.Opcode);
939
940 switch (dtype) {
941 default:
942 case TGSI_TYPE_FLOAT:
943 case TGSI_TYPE_UNTYPED:
944 bld_store = &bld_base->base;
945 break;
946 case TGSI_TYPE_UNSIGNED:
947 bld_store = &bld_base->uint_bld;
948 break;
949 case TGSI_TYPE_SIGNED:
950 bld_store = &bld_base->int_bld;
951 break;
952 case TGSI_TYPE_DOUBLE:
953 case TGSI_TYPE_VOID:
954 assert(0);
955 bld_store = NULL;
956 break;
957 }
958
959 switch( inst->Instruction.Saturate ) {
960 case TGSI_SAT_NONE:
961 break;
962
963 case TGSI_SAT_ZERO_ONE:
964 value = lp_build_max(&bld->bld_base.base, value, bld->bld_base.base.zero);
965 value = lp_build_min(&bld->bld_base.base, value, bld->bld_base.base.one);
966 break;
967
968 case TGSI_SAT_MINUS_PLUS_ONE:
969 value = lp_build_max(&bld->bld_base.base, value, lp_build_const_vec(bld->bld_base.base.gallivm, bld->bld_base.base.type, -1.0));
970 value = lp_build_min(&bld->bld_base.base, value, bld->bld_base.base.one);
971 break;
972
973 default:
974 assert(0);
975 }
976
977 if (reg->Register.Indirect) {
978 indirect_index = get_indirect_index(bld,
979 reg->Register.File,
980 reg->Register.Index,
981 &reg->Indirect);
982 } else {
983 assert(reg->Register.Index <=
984 bld->bld_base.info->file_max[reg->Register.File]);
985 }
986
987 switch( reg->Register.File ) {
988 case TGSI_FILE_OUTPUT:
989 if (reg->Register.Indirect) {
990 LLVMValueRef chan_vec =
991 lp_build_const_int_vec(gallivm, uint_bld->type, chan_index);
992 LLVMValueRef length_vec =
993 lp_build_const_int_vec(gallivm, uint_bld->type, bld->bld_base.base.type.length);
994 LLVMValueRef index_vec; /* indexes into the temp registers */
995 LLVMValueRef outputs_array;
996 LLVMValueRef pixel_offsets;
997 LLVMTypeRef float_ptr_type;
998 int i;
999
1000 /* build pixel offset vector: {0, 1, 2, 3, ...} */
1001 pixel_offsets = uint_bld->undef;
1002 for (i = 0; i < bld->bld_base.base.type.length; i++) {
1003 LLVMValueRef ii = lp_build_const_int32(gallivm, i);
1004 pixel_offsets = LLVMBuildInsertElement(builder, pixel_offsets,
1005 ii, ii, "");
1006 }
1007
1008 /* index_vec = (indirect_index * 4 + chan_index) * length + offsets */
1009 index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2);
1010 index_vec = lp_build_add(uint_bld, index_vec, chan_vec);
1011 index_vec = lp_build_mul(uint_bld, index_vec, length_vec);
1012 index_vec = lp_build_add(uint_bld, index_vec, pixel_offsets);
1013
1014 float_ptr_type =
1015 LLVMPointerType(LLVMFloatTypeInContext(gallivm->context), 0);
1016 outputs_array = LLVMBuildBitCast(builder, bld->outputs_array,
1017 float_ptr_type, "");
1018
1019 /* Scatter store values into temp registers */
1020 emit_mask_scatter(bld, outputs_array, index_vec, value,
1021 &bld->exec_mask, pred);
1022 }
1023 else {
1024 LLVMValueRef out_ptr = lp_get_output_ptr(bld, reg->Register.Index,
1025 chan_index);
1026 lp_exec_mask_store(&bld->exec_mask, bld_store, pred, value, out_ptr);
1027 }
1028 break;
1029
1030 case TGSI_FILE_TEMPORARY:
1031 if (reg->Register.Indirect) {
1032 LLVMValueRef chan_vec =
1033 lp_build_const_int_vec(gallivm, uint_bld->type, chan_index);
1034 LLVMValueRef length_vec =
1035 lp_build_const_int_vec(gallivm, uint_bld->type,
1036 bld->bld_base.base.type.length);
1037 LLVMValueRef index_vec; /* indexes into the temp registers */
1038 LLVMValueRef temps_array;
1039 LLVMValueRef pixel_offsets;
1040 LLVMTypeRef float_ptr_type;
1041 int i;
1042
1043 /* build pixel offset vector: {0, 1, 2, 3, ...} */
1044 pixel_offsets = uint_bld->undef;
1045 for (i = 0; i < bld->bld_base.base.type.length; i++) {
1046 LLVMValueRef ii = lp_build_const_int32(gallivm, i);
1047 pixel_offsets = LLVMBuildInsertElement(builder, pixel_offsets,
1048 ii, ii, "");
1049 }
1050
1051 /* index_vec = (indirect_index * 4 + chan_index) * length + offsets */
1052 index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2);
1053 index_vec = lp_build_add(uint_bld, index_vec, chan_vec);
1054 index_vec = lp_build_mul(uint_bld, index_vec, length_vec);
1055 index_vec = lp_build_add(uint_bld, index_vec, pixel_offsets);
1056
1057 float_ptr_type =
1058 LLVMPointerType(LLVMFloatTypeInContext(gallivm->context), 0);
1059 temps_array = LLVMBuildBitCast(builder, bld->temps_array,
1060 float_ptr_type, "");
1061
1062 /* Scatter store values into temp registers */
1063 emit_mask_scatter(bld, temps_array, index_vec, value,
1064 &bld->exec_mask, pred);
1065 }
1066 else {
1067 LLVMValueRef temp_ptr;
1068
1069 switch (dtype) {
1070 case TGSI_TYPE_UNSIGNED:
1071 case TGSI_TYPE_SIGNED: {
1072 LLVMTypeRef itype = bld_base->int_bld.vec_type;
1073 LLVMTypeRef ivtype = LLVMPointerType(itype, 0);
1074 LLVMValueRef tint_ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index,
1075 chan_index);
1076 LLVMValueRef temp_value_ptr;
1077
1078 temp_ptr = LLVMBuildBitCast(builder, tint_ptr, ivtype, "");
1079 temp_value_ptr = LLVMBuildBitCast(builder, value, itype, "");
1080 value = temp_value_ptr;
1081 break;
1082 }
1083 default:
1084 case TGSI_TYPE_FLOAT:
1085 case TGSI_TYPE_UNTYPED:
1086 temp_ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index,
1087 chan_index);
1088 break;
1089 }
1090
1091 lp_exec_mask_store(&bld->exec_mask, bld_store, pred, value, temp_ptr);
1092 }
1093 break;
1094
1095 case TGSI_FILE_ADDRESS:
1096 assert(dtype == TGSI_TYPE_SIGNED);
1097 assert(LLVMTypeOf(value) == bld_base->base.int_vec_type);
1098 lp_exec_mask_store(&bld->exec_mask, bld_store, pred, value,
1099 bld->addr[reg->Register.Index][chan_index]);
1100 break;
1101
1102 case TGSI_FILE_PREDICATE:
1103 lp_exec_mask_store(&bld->exec_mask, bld_store, pred, value,
1104 bld->preds[reg->Register.Index][chan_index]);
1105 break;
1106
1107 default:
1108 assert( 0 );
1109 }
1110 }
1111
1112 static void
1113 emit_store(
1114 struct lp_build_tgsi_context * bld_base,
1115 const struct tgsi_full_instruction * inst,
1116 const struct tgsi_opcode_info * info,
1117 LLVMValueRef dst[4])
1118
1119 {
1120 unsigned chan_index;
1121 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1122
1123 if(info->num_dst) {
1124 LLVMValueRef pred[TGSI_NUM_CHANNELS];
1125
1126 emit_fetch_predicate( bld, inst, pred );
1127
1128 TGSI_FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
1129 emit_store_chan(bld_base, inst, 0, chan_index, pred[chan_index], dst[chan_index]);
1130 }
1131 }
1132 }
1133
1134 /**
1135 * High-level instruction translators.
1136 */
1137
1138 static void
1139 emit_tex( struct lp_build_tgsi_soa_context *bld,
1140 const struct tgsi_full_instruction *inst,
1141 enum lp_build_tex_modifier modifier,
1142 LLVMValueRef *texel)
1143 {
1144 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
1145 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
1146 unsigned unit;
1147 LLVMValueRef lod_bias, explicit_lod;
1148 LLVMValueRef oow = NULL;
1149 LLVMValueRef coords[3];
1150 struct lp_derivatives derivs;
1151 unsigned num_coords;
1152 unsigned dims;
1153 unsigned i;
1154
1155 if (!bld->sampler) {
1156 _debug_printf("warning: found texture instruction but no sampler generator supplied\n");
1157 for (i = 0; i < 4; i++) {
1158 texel[i] = bld->bld_base.base.undef;
1159 }
1160 return;
1161 }
1162
1163 derivs.ddx_ddy[0] = bld->bld_base.base.undef;
1164 derivs.ddx_ddy[1] = bld->bld_base.base.undef;
1165
1166 switch (inst->Texture.Texture) {
1167 case TGSI_TEXTURE_1D:
1168 num_coords = 1;
1169 dims = 1;
1170 break;
1171 case TGSI_TEXTURE_1D_ARRAY:
1172 num_coords = 2;
1173 dims = 1;
1174 break;
1175 case TGSI_TEXTURE_2D:
1176 case TGSI_TEXTURE_RECT:
1177 num_coords = 2;
1178 dims = 2;
1179 break;
1180 case TGSI_TEXTURE_SHADOW1D:
1181 case TGSI_TEXTURE_SHADOW1D_ARRAY:
1182 num_coords = 3;
1183 dims = 1;
1184 break;
1185 case TGSI_TEXTURE_SHADOW2D:
1186 case TGSI_TEXTURE_SHADOWRECT:
1187 case TGSI_TEXTURE_2D_ARRAY:
1188 case TGSI_TEXTURE_CUBE:
1189 num_coords = 3;
1190 dims = 2;
1191 break;
1192 case TGSI_TEXTURE_3D:
1193 num_coords = 3;
1194 dims = 3;
1195 break;
1196 case TGSI_TEXTURE_SHADOW2D_ARRAY:
1197 num_coords = 4;
1198 dims = 2;
1199 break;
1200 default:
1201 assert(0);
1202 return;
1203 }
1204
1205 if (modifier == LP_BLD_TEX_MODIFIER_LOD_BIAS) {
1206 lod_bias = lp_build_emit_fetch( &bld->bld_base, inst, 0, 3 );
1207 explicit_lod = NULL;
1208 }
1209 else if (modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_LOD) {
1210 lod_bias = NULL;
1211 explicit_lod = lp_build_emit_fetch( &bld->bld_base, inst, 0, 3 );
1212 }
1213 else {
1214 lod_bias = NULL;
1215 explicit_lod = NULL;
1216 }
1217
1218 if (modifier == LP_BLD_TEX_MODIFIER_PROJECTED) {
1219 oow = lp_build_emit_fetch( &bld->bld_base, inst, 0, 3 );
1220 oow = lp_build_rcp(&bld->bld_base.base, oow);
1221 }
1222
1223 for (i = 0; i < num_coords; i++) {
1224 coords[i] = lp_build_emit_fetch( &bld->bld_base, inst, 0, i );
1225 if (modifier == LP_BLD_TEX_MODIFIER_PROJECTED)
1226 coords[i] = lp_build_mul(&bld->bld_base.base, coords[i], oow);
1227 }
1228 for (i = num_coords; i < 3; i++) {
1229 coords[i] = bld->bld_base.base.undef;
1230 }
1231
1232 if (modifier == LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV) {
1233 LLVMValueRef i32undef = LLVMGetUndef(LLVMInt32TypeInContext(gallivm->context));
1234 LLVMValueRef shuffles[LP_MAX_VECTOR_LENGTH];
1235 LLVMValueRef ddxdyonec[3];
1236 unsigned length = bld->bld_base.base.type.length;
1237 unsigned num_quads = length / 4;
1238 unsigned dim;
1239 unsigned quad;
1240
1241 for (dim = 0; dim < dims; ++dim) {
1242 LLVMValueRef srcx = lp_build_emit_fetch( &bld->bld_base, inst, 1, dim );
1243 LLVMValueRef srcy = lp_build_emit_fetch( &bld->bld_base, inst, 2, dim );
1244 for (quad = 0; quad < num_quads; ++quad) {
1245 unsigned s1 = 4*quad;
1246 unsigned s2 = 4*quad + length;
1247 shuffles[4*quad + 0] = lp_build_const_int32(gallivm, s1);
1248 shuffles[4*quad + 1] = lp_build_const_int32(gallivm, s2);
1249 shuffles[4*quad + 2] = i32undef;
1250 shuffles[4*quad + 3] = i32undef;
1251 }
1252 ddxdyonec[dim] = LLVMBuildShuffleVector(builder, srcx, srcy,
1253 LLVMConstVector(shuffles, length), "");
1254 }
1255 if (dims == 1) {
1256 derivs.ddx_ddy[0] = ddxdyonec[0];
1257 }
1258 else if (dims >= 2) {
1259 for (quad = 0; quad < num_quads; ++quad) {
1260 unsigned s1 = 4*quad;
1261 unsigned s2 = 4*quad + length;
1262 shuffles[4*quad + 0] = lp_build_const_int32(gallivm, s1);
1263 shuffles[4*quad + 1] = lp_build_const_int32(gallivm, s1 + 1);
1264 shuffles[4*quad + 2] = lp_build_const_int32(gallivm, s2);
1265 shuffles[4*quad + 3] = lp_build_const_int32(gallivm, s2 + 1);
1266 }
1267 derivs.ddx_ddy[0] = LLVMBuildShuffleVector(builder, ddxdyonec[0], ddxdyonec[1],
1268 LLVMConstVector(shuffles, length), "");
1269 if (dims == 3) {
1270 derivs.ddx_ddy[1] = ddxdyonec[2];
1271 }
1272 }
1273 unit = inst->Src[3].Register.Index;
1274 } else {
1275 if (dims == 1) {
1276 derivs.ddx_ddy[0] = lp_build_packed_ddx_ddy_onecoord(&bld->bld_base.base, coords[0]);
1277 }
1278 else if (dims >= 2) {
1279 derivs.ddx_ddy[0] = lp_build_packed_ddx_ddy_twocoord(&bld->bld_base.base,
1280 coords[0], coords[1]);
1281 if (dims == 3) {
1282 derivs.ddx_ddy[1] = lp_build_packed_ddx_ddy_onecoord(&bld->bld_base.base, coords[2]);
1283 }
1284 }
1285 unit = inst->Src[1].Register.Index;
1286 }
1287
1288 bld->sampler->emit_fetch_texel(bld->sampler,
1289 bld->bld_base.base.gallivm,
1290 bld->bld_base.base.type,
1291 unit, num_coords, coords,
1292 &derivs,
1293 lod_bias, explicit_lod,
1294 texel);
1295 }
1296
1297 static void
1298 emit_txq( struct lp_build_tgsi_soa_context *bld,
1299 const struct tgsi_full_instruction *inst,
1300 LLVMValueRef *sizes_out)
1301 {
1302 LLVMValueRef explicit_lod;
1303 unsigned num_coords, has_lod;
1304 unsigned i;
1305
1306 switch (inst->Texture.Texture) {
1307 case TGSI_TEXTURE_1D:
1308 case TGSI_TEXTURE_SHADOW1D:
1309 case TGSI_TEXTURE_SHADOW2D:
1310 case TGSI_TEXTURE_SHADOWCUBE:
1311 num_coords = 1;
1312 has_lod = 1;
1313 break;
1314 case TGSI_TEXTURE_2D:
1315 case TGSI_TEXTURE_CUBE:
1316 case TGSI_TEXTURE_1D_ARRAY:
1317 case TGSI_TEXTURE_SHADOW1D_ARRAY:
1318 num_coords = 2;
1319 has_lod = 1;
1320 break;
1321 case TGSI_TEXTURE_3D:
1322 // case TGSI_TEXTURE_CUBE_ARRAY:
1323 // case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
1324 case TGSI_TEXTURE_2D_ARRAY:
1325 case TGSI_TEXTURE_SHADOW2D_ARRAY:
1326 num_coords = 3;
1327 has_lod = 1;
1328 break;
1329
1330 case TGSI_TEXTURE_BUFFER:
1331 num_coords = 1;
1332 has_lod = 0;
1333 break;
1334
1335 case TGSI_TEXTURE_RECT:
1336 case TGSI_TEXTURE_SHADOWRECT:
1337 // case TGSI_TEXTURE_2D_MS:
1338 num_coords = 2;
1339 has_lod = 0;
1340 break;
1341
1342 // case TGSI_TEXTURE_2D_MS_ARRAY:
1343 // num_coords = 3;
1344 // has_lod = 0;
1345 // break;
1346
1347 default:
1348 assert(0);
1349 return;
1350 }
1351
1352 if (!bld->sampler) {
1353 _debug_printf("warning: found texture query instruction but no sampler generator supplied\n");
1354 for (i = 0; i < num_coords; i++)
1355 sizes_out[i] = bld->bld_base.base.undef;
1356 return;
1357 }
1358
1359 if (has_lod)
1360 explicit_lod = lp_build_emit_fetch( &bld->bld_base, inst, 0, 2 );
1361 else
1362 explicit_lod = NULL;
1363
1364 bld->sampler->emit_size_query(bld->sampler,
1365 bld->bld_base.base.gallivm,
1366 bld->bld_base.int_bld.type,
1367 inst->Src[1].Register.Index,
1368 explicit_lod,
1369 sizes_out);
1370 }
1371
1372 static boolean
1373 near_end_of_shader(struct lp_build_tgsi_soa_context *bld,
1374 int pc)
1375 {
1376 int i;
1377
1378 for (i = 0; i < 5; i++) {
1379 unsigned opcode;
1380
1381 if (pc + i >= bld->bld_base.info->num_instructions)
1382 return TRUE;
1383
1384 opcode = bld->bld_base.instructions[pc + i].Instruction.Opcode;
1385
1386 if (opcode == TGSI_OPCODE_END)
1387 return TRUE;
1388
1389 if (opcode == TGSI_OPCODE_TEX ||
1390 opcode == TGSI_OPCODE_TXP ||
1391 opcode == TGSI_OPCODE_TXD ||
1392 opcode == TGSI_OPCODE_TXB ||
1393 opcode == TGSI_OPCODE_TXL ||
1394 opcode == TGSI_OPCODE_TXF ||
1395 opcode == TGSI_OPCODE_TXQ ||
1396 opcode == TGSI_OPCODE_CAL ||
1397 opcode == TGSI_OPCODE_CALLNZ ||
1398 opcode == TGSI_OPCODE_IF ||
1399 opcode == TGSI_OPCODE_IFC ||
1400 opcode == TGSI_OPCODE_BGNLOOP ||
1401 opcode == TGSI_OPCODE_SWITCH)
1402 return FALSE;
1403 }
1404
1405 return TRUE;
1406 }
1407
1408
1409
1410 /**
1411 * Kill fragment if any of the src register values are negative.
1412 */
1413 static void
1414 emit_kil(
1415 struct lp_build_tgsi_soa_context *bld,
1416 const struct tgsi_full_instruction *inst,
1417 int pc)
1418 {
1419 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
1420 const struct tgsi_full_src_register *reg = &inst->Src[0];
1421 LLVMValueRef terms[TGSI_NUM_CHANNELS];
1422 LLVMValueRef mask;
1423 unsigned chan_index;
1424
1425 memset(&terms, 0, sizeof terms);
1426
1427 TGSI_FOR_EACH_CHANNEL( chan_index ) {
1428 unsigned swizzle;
1429
1430 /* Unswizzle channel */
1431 swizzle = tgsi_util_get_full_src_register_swizzle( reg, chan_index );
1432
1433 /* Check if the component has not been already tested. */
1434 assert(swizzle < TGSI_NUM_CHANNELS);
1435 if( !terms[swizzle] )
1436 /* TODO: change the comparison operator instead of setting the sign */
1437 terms[swizzle] = lp_build_emit_fetch(&bld->bld_base, inst, 0, chan_index );
1438 }
1439
1440 mask = NULL;
1441 TGSI_FOR_EACH_CHANNEL( chan_index ) {
1442 if(terms[chan_index]) {
1443 LLVMValueRef chan_mask;
1444
1445 /*
1446 * If term < 0 then mask = 0 else mask = ~0.
1447 */
1448 chan_mask = lp_build_cmp(&bld->bld_base.base, PIPE_FUNC_GEQUAL, terms[chan_index], bld->bld_base.base.zero);
1449
1450 if(mask)
1451 mask = LLVMBuildAnd(builder, mask, chan_mask, "");
1452 else
1453 mask = chan_mask;
1454 }
1455 }
1456
1457 if(mask) {
1458 lp_build_mask_update(bld->mask, mask);
1459
1460 if (!near_end_of_shader(bld, pc))
1461 lp_build_mask_check(bld->mask);
1462 }
1463 }
1464
1465
1466 /**
1467 * Predicated fragment kill.
1468 * XXX Actually, we do an unconditional kill (as in tgsi_exec.c).
1469 * The only predication is the execution mask which will apply if
1470 * we're inside a loop or conditional.
1471 */
1472 static void
1473 emit_kilp(struct lp_build_tgsi_soa_context *bld,
1474 int pc)
1475 {
1476 LLVMBuilderRef builder = bld->bld_base.base.gallivm->builder;
1477 LLVMValueRef mask;
1478
1479 /* For those channels which are "alive", disable fragment shader
1480 * execution.
1481 */
1482 if (bld->exec_mask.has_mask) {
1483 mask = LLVMBuildNot(builder, bld->exec_mask.exec_mask, "kilp");
1484 }
1485 else {
1486 LLVMValueRef zero = LLVMConstNull(bld->bld_base.base.int_vec_type);
1487 mask = zero;
1488 }
1489
1490 lp_build_mask_update(bld->mask, mask);
1491
1492 if (!near_end_of_shader(bld, pc))
1493 lp_build_mask_check(bld->mask);
1494 }
1495
1496
1497 /**
1498 * Emit code which will dump the value of all the temporary registers
1499 * to stdout.
1500 */
1501 static void
1502 emit_dump_temps(struct lp_build_tgsi_soa_context *bld)
1503 {
1504 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
1505 LLVMBuilderRef builder = gallivm->builder;
1506 LLVMValueRef temp_ptr;
1507 LLVMValueRef i0 = lp_build_const_int32(gallivm, 0);
1508 LLVMValueRef i1 = lp_build_const_int32(gallivm, 1);
1509 LLVMValueRef i2 = lp_build_const_int32(gallivm, 2);
1510 LLVMValueRef i3 = lp_build_const_int32(gallivm, 3);
1511 int index;
1512 int n = bld->bld_base.info->file_max[TGSI_FILE_TEMPORARY];
1513
1514 for (index = 0; index < n; index++) {
1515 LLVMValueRef idx = lp_build_const_int32(gallivm, index);
1516 LLVMValueRef v[4][4], res;
1517 int chan;
1518
1519 lp_build_printf(gallivm, "TEMP[%d]:\n", idx);
1520
1521 for (chan = 0; chan < 4; chan++) {
1522 temp_ptr = lp_get_temp_ptr_soa(bld, index, chan);
1523 res = LLVMBuildLoad(builder, temp_ptr, "");
1524 v[chan][0] = LLVMBuildExtractElement(builder, res, i0, "");
1525 v[chan][1] = LLVMBuildExtractElement(builder, res, i1, "");
1526 v[chan][2] = LLVMBuildExtractElement(builder, res, i2, "");
1527 v[chan][3] = LLVMBuildExtractElement(builder, res, i3, "");
1528 }
1529
1530 lp_build_printf(gallivm, " X: %f %f %f %f\n",
1531 v[0][0], v[0][1], v[0][2], v[0][3]);
1532 lp_build_printf(gallivm, " Y: %f %f %f %f\n",
1533 v[1][0], v[1][1], v[1][2], v[1][3]);
1534 lp_build_printf(gallivm, " Z: %f %f %f %f\n",
1535 v[2][0], v[2][1], v[2][2], v[2][3]);
1536 lp_build_printf(gallivm, " W: %f %f %f %f\n",
1537 v[3][0], v[3][1], v[3][2], v[3][3]);
1538 }
1539 }
1540
1541
1542
1543 void
1544 lp_emit_declaration_soa(
1545 struct lp_build_tgsi_context *bld_base,
1546 const struct tgsi_full_declaration *decl)
1547 {
1548 struct lp_build_tgsi_soa_context *bld = lp_soa_context(bld_base);
1549 struct gallivm_state *gallivm = bld->bld_base.base.gallivm;
1550 LLVMTypeRef vec_type = bld->bld_base.base.vec_type;
1551 const unsigned first = decl->Range.First;
1552 const unsigned last = decl->Range.Last;
1553 unsigned idx, i;
1554
1555 for (idx = first; idx <= last; ++idx) {
1556 assert(last <= bld->bld_base.info->file_max[decl->Declaration.File]);
1557 switch (decl->Declaration.File) {
1558 case TGSI_FILE_TEMPORARY:
1559 assert(idx < LP_MAX_TGSI_TEMPS);
1560 if (!(bld->indirect_files & (1 << TGSI_FILE_TEMPORARY))) {
1561 for (i = 0; i < TGSI_NUM_CHANNELS; i++)
1562 bld->temps[idx][i] = lp_build_alloca(gallivm, vec_type, "temp");
1563 }
1564 break;
1565
1566 case TGSI_FILE_OUTPUT:
1567 if (!(bld->indirect_files & (1 << TGSI_FILE_OUTPUT))) {
1568 for (i = 0; i < TGSI_NUM_CHANNELS; i++)
1569 bld->outputs[idx][i] = lp_build_alloca(gallivm,
1570 vec_type, "output");
1571 }
1572 break;
1573
1574 case TGSI_FILE_ADDRESS:
1575 /* ADDR registers are the only allocated with an integer LLVM IR type,
1576 * as they are guaranteed to always have integers.
1577 * XXX: Not sure if this exception is worthwhile (or the whole idea of
1578 * an ADDR register for that matter).
1579 */
1580 assert(idx < LP_MAX_TGSI_ADDRS);
1581 for (i = 0; i < TGSI_NUM_CHANNELS; i++)
1582 bld->addr[idx][i] = lp_build_alloca(gallivm, bld_base->base.int_vec_type, "addr");
1583 break;
1584
1585 case TGSI_FILE_PREDICATE:
1586 assert(idx < LP_MAX_TGSI_PREDS);
1587 for (i = 0; i < TGSI_NUM_CHANNELS; i++)
1588 bld->preds[idx][i] = lp_build_alloca(gallivm, vec_type,
1589 "predicate");
1590 break;
1591
1592 default:
1593 /* don't need to declare other vars */
1594 break;
1595 }
1596 }
1597 }
1598
1599
1600 void lp_emit_immediate_soa(
1601 struct lp_build_tgsi_context *bld_base,
1602 const struct tgsi_full_immediate *imm)
1603 {
1604 struct lp_build_tgsi_soa_context *bld = lp_soa_context(bld_base);
1605 struct gallivm_state * gallivm = bld_base->base.gallivm;
1606
1607 /* simply copy the immediate values into the next immediates[] slot */
1608 unsigned i;
1609 const uint size = imm->Immediate.NrTokens - 1;
1610 assert(size <= 4);
1611 assert(bld->num_immediates < LP_MAX_TGSI_IMMEDIATES);
1612 switch (imm->Immediate.DataType) {
1613 case TGSI_IMM_FLOAT32:
1614 for( i = 0; i < size; ++i )
1615 bld->immediates[bld->num_immediates][i] =
1616 lp_build_const_vec(gallivm, bld_base->base.type, imm->u[i].Float);
1617
1618 break;
1619 case TGSI_IMM_UINT32:
1620 for( i = 0; i < size; ++i ) {
1621 LLVMValueRef tmp = lp_build_const_vec(gallivm, bld_base->uint_bld.type, imm->u[i].Uint);
1622 bld->immediates[bld->num_immediates][i] =
1623 LLVMConstBitCast(tmp, bld_base->base.vec_type);
1624 }
1625
1626 break;
1627 case TGSI_IMM_INT32:
1628 for( i = 0; i < size; ++i ) {
1629 LLVMValueRef tmp = lp_build_const_vec(gallivm, bld_base->int_bld.type, imm->u[i].Int);
1630 bld->immediates[bld->num_immediates][i] =
1631 LLVMConstBitCast(tmp, bld_base->base.vec_type);
1632 }
1633
1634 break;
1635 }
1636 for( i = size; i < 4; ++i )
1637 bld->immediates[bld->num_immediates][i] = bld_base->base.undef;
1638
1639 bld->num_immediates++;
1640 }
1641
1642 static void
1643 ddx_emit(
1644 const struct lp_build_tgsi_action * action,
1645 struct lp_build_tgsi_context * bld_base,
1646 struct lp_build_emit_data * emit_data)
1647 {
1648 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1649
1650 emit_fetch_deriv(bld, emit_data->args[0], NULL,
1651 &emit_data->output[emit_data->chan], NULL);
1652 }
1653
1654 static void
1655 ddy_emit(
1656 const struct lp_build_tgsi_action * action,
1657 struct lp_build_tgsi_context * bld_base,
1658 struct lp_build_emit_data * emit_data)
1659 {
1660 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1661
1662 emit_fetch_deriv(bld, emit_data->args[0], NULL, NULL,
1663 &emit_data->output[emit_data->chan]);
1664 }
1665
1666 static void
1667 kilp_emit(
1668 const struct lp_build_tgsi_action * action,
1669 struct lp_build_tgsi_context * bld_base,
1670 struct lp_build_emit_data * emit_data)
1671 {
1672 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1673
1674 emit_kilp(bld, bld_base->pc - 1);
1675 }
1676
1677 static void
1678 kil_emit(
1679 const struct lp_build_tgsi_action * action,
1680 struct lp_build_tgsi_context * bld_base,
1681 struct lp_build_emit_data * emit_data)
1682 {
1683 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1684
1685 emit_kil(bld, emit_data->inst, bld_base->pc - 1);
1686 }
1687
1688 static void
1689 tex_emit(
1690 const struct lp_build_tgsi_action * action,
1691 struct lp_build_tgsi_context * bld_base,
1692 struct lp_build_emit_data * emit_data)
1693 {
1694 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1695
1696 emit_tex(bld, emit_data->inst, LP_BLD_TEX_MODIFIER_NONE, emit_data->output);
1697 }
1698
1699 static void
1700 txb_emit(
1701 const struct lp_build_tgsi_action * action,
1702 struct lp_build_tgsi_context * bld_base,
1703 struct lp_build_emit_data * emit_data)
1704 {
1705 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1706
1707 emit_tex(bld, emit_data->inst, LP_BLD_TEX_MODIFIER_LOD_BIAS,
1708 emit_data->output);
1709 }
1710
1711 static void
1712 txd_emit(
1713 const struct lp_build_tgsi_action * action,
1714 struct lp_build_tgsi_context * bld_base,
1715 struct lp_build_emit_data * emit_data)
1716 {
1717 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1718
1719 emit_tex(bld, emit_data->inst, LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV,
1720 emit_data->output);
1721 }
1722
1723 static void
1724 txl_emit(
1725 const struct lp_build_tgsi_action * action,
1726 struct lp_build_tgsi_context * bld_base,
1727 struct lp_build_emit_data * emit_data)
1728 {
1729 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1730
1731 emit_tex(bld, emit_data->inst, LP_BLD_TEX_MODIFIER_EXPLICIT_LOD,
1732 emit_data->output);
1733 }
1734
1735 static void
1736 txp_emit(
1737 const struct lp_build_tgsi_action * action,
1738 struct lp_build_tgsi_context * bld_base,
1739 struct lp_build_emit_data * emit_data)
1740 {
1741 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1742
1743 emit_tex(bld, emit_data->inst, LP_BLD_TEX_MODIFIER_PROJECTED,
1744 emit_data->output);
1745 }
1746
1747 static void
1748 txq_emit(
1749 const struct lp_build_tgsi_action * action,
1750 struct lp_build_tgsi_context * bld_base,
1751 struct lp_build_emit_data * emit_data)
1752 {
1753 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1754
1755 emit_txq(bld, emit_data->inst, emit_data->output);
1756 }
1757
1758 static void
1759 cal_emit(
1760 const struct lp_build_tgsi_action * action,
1761 struct lp_build_tgsi_context * bld_base,
1762 struct lp_build_emit_data * emit_data)
1763 {
1764 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1765
1766 lp_exec_mask_call(&bld->exec_mask, emit_data->inst->Label.Label,
1767 &bld_base->pc);
1768 }
1769
1770 static void
1771 ret_emit(
1772 const struct lp_build_tgsi_action * action,
1773 struct lp_build_tgsi_context * bld_base,
1774 struct lp_build_emit_data * emit_data)
1775 {
1776 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1777
1778 lp_exec_mask_ret(&bld->exec_mask, &bld_base->pc);
1779 }
1780
1781 static void
1782 brk_emit(
1783 const struct lp_build_tgsi_action * action,
1784 struct lp_build_tgsi_context * bld_base,
1785 struct lp_build_emit_data * emit_data)
1786 {
1787 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1788
1789 lp_exec_break(&bld->exec_mask);
1790 }
1791
1792 static void
1793 if_emit(
1794 const struct lp_build_tgsi_action * action,
1795 struct lp_build_tgsi_context * bld_base,
1796 struct lp_build_emit_data * emit_data)
1797 {
1798 LLVMValueRef tmp;
1799 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1800
1801 tmp = lp_build_cmp(&bld_base->base, PIPE_FUNC_NOTEQUAL,
1802 emit_data->args[0], bld->bld_base.base.zero);
1803 lp_exec_mask_cond_push(&bld->exec_mask, tmp);
1804 }
1805
1806 static void
1807 bgnloop_emit(
1808 const struct lp_build_tgsi_action * action,
1809 struct lp_build_tgsi_context * bld_base,
1810 struct lp_build_emit_data * emit_data)
1811 {
1812 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1813
1814 lp_exec_bgnloop(&bld->exec_mask);
1815 }
1816
1817 static void
1818 bgnsub_emit(
1819 const struct lp_build_tgsi_action * action,
1820 struct lp_build_tgsi_context * bld_base,
1821 struct lp_build_emit_data * emit_data)
1822 {
1823 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1824
1825 lp_exec_mask_bgnsub(&bld->exec_mask);
1826 }
1827
1828 static void
1829 else_emit(
1830 const struct lp_build_tgsi_action * action,
1831 struct lp_build_tgsi_context * bld_base,
1832 struct lp_build_emit_data * emit_data)
1833 {
1834 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1835
1836 lp_exec_mask_cond_invert(&bld->exec_mask);
1837 }
1838
1839 static void
1840 endif_emit(
1841 const struct lp_build_tgsi_action * action,
1842 struct lp_build_tgsi_context * bld_base,
1843 struct lp_build_emit_data * emit_data)
1844 {
1845 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1846
1847 lp_exec_mask_cond_pop(&bld->exec_mask);
1848 }
1849
1850 static void
1851 endloop_emit(
1852 const struct lp_build_tgsi_action * action,
1853 struct lp_build_tgsi_context * bld_base,
1854 struct lp_build_emit_data * emit_data)
1855 {
1856 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1857
1858 lp_exec_endloop(bld_base->base.gallivm, &bld->exec_mask);
1859 }
1860
1861 static void
1862 endsub_emit(
1863 const struct lp_build_tgsi_action * action,
1864 struct lp_build_tgsi_context * bld_base,
1865 struct lp_build_emit_data * emit_data)
1866 {
1867 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1868
1869 lp_exec_mask_endsub(&bld->exec_mask, &bld_base->pc);
1870 }
1871
1872 static void
1873 cont_emit(
1874 const struct lp_build_tgsi_action * action,
1875 struct lp_build_tgsi_context * bld_base,
1876 struct lp_build_emit_data * emit_data)
1877 {
1878 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1879
1880 lp_exec_continue(&bld->exec_mask);
1881 }
1882
1883 /* XXX: Refactor and move it to lp_bld_tgsi_action.c
1884 *
1885 * XXX: What do the comments about xmm registers mean? Maybe they are left over
1886 * from old code, but there is no garauntee that LLVM will use those registers
1887 * for this code.
1888 *
1889 * XXX: There should be no calls to lp_build_emit_fetch in this function. This
1890 * should be handled by the emit_data->fetch_args function. */
1891 static void
1892 nrm_emit(
1893 const struct lp_build_tgsi_action * action,
1894 struct lp_build_tgsi_context * bld_base,
1895 struct lp_build_emit_data * emit_data)
1896 {
1897 LLVMValueRef tmp0, tmp1;
1898 LLVMValueRef tmp4 = NULL;
1899 LLVMValueRef tmp5 = NULL;
1900 LLVMValueRef tmp6 = NULL;
1901 LLVMValueRef tmp7 = NULL;
1902 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1903
1904 uint dims = (emit_data->inst->Instruction.Opcode == TGSI_OPCODE_NRM) ? 3 : 4;
1905
1906 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_X) ||
1907 TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Y) ||
1908 TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Z) ||
1909 (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_W) && dims == 4)) {
1910
1911 /* NOTE: Cannot use xmm regs 2/3 here (see emit_rsqrt() above). */
1912
1913 /* xmm4 = src.x */
1914 /* xmm0 = src.x * src.x */
1915 tmp0 = lp_build_emit_fetch(&bld->bld_base, emit_data->inst, 0, TGSI_CHAN_X);
1916 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_X)) {
1917 tmp4 = tmp0;
1918 }
1919 tmp0 = lp_build_mul( &bld->bld_base.base, tmp0, tmp0);
1920
1921 /* xmm5 = src.y */
1922 /* xmm0 = xmm0 + src.y * src.y */
1923 tmp1 = lp_build_emit_fetch(&bld->bld_base, emit_data->inst, 0, TGSI_CHAN_Y);
1924 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Y)) {
1925 tmp5 = tmp1;
1926 }
1927 tmp1 = lp_build_mul( &bld->bld_base.base, tmp1, tmp1);
1928 tmp0 = lp_build_add( &bld->bld_base.base, tmp0, tmp1);
1929
1930 /* xmm6 = src.z */
1931 /* xmm0 = xmm0 + src.z * src.z */
1932 tmp1 = lp_build_emit_fetch(&bld->bld_base, emit_data->inst, 0, TGSI_CHAN_Z);
1933 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Z)) {
1934 tmp6 = tmp1;
1935 }
1936 tmp1 = lp_build_mul( &bld->bld_base.base, tmp1, tmp1);
1937 tmp0 = lp_build_add( &bld->bld_base.base, tmp0, tmp1);
1938
1939 if (dims == 4) {
1940 /* xmm7 = src.w */
1941 /* xmm0 = xmm0 + src.w * src.w */
1942 tmp1 = lp_build_emit_fetch(&bld->bld_base, emit_data->inst, 0, TGSI_CHAN_W);
1943 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_W)) {
1944 tmp7 = tmp1;
1945 }
1946 tmp1 = lp_build_mul( &bld->bld_base.base, tmp1, tmp1);
1947 tmp0 = lp_build_add( &bld->bld_base.base, tmp0, tmp1);
1948 }
1949 /* xmm1 = 1 / sqrt(xmm0) */
1950 tmp1 = lp_build_rsqrt( &bld->bld_base.base, tmp0);
1951 /* dst.x = xmm1 * src.x */
1952 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_X)) {
1953 emit_data->output[TGSI_CHAN_X] = lp_build_mul( &bld->bld_base.base, tmp4, tmp1);
1954 }
1955 /* dst.y = xmm1 * src.y */
1956 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Y)) {
1957 emit_data->output[TGSI_CHAN_Y] = lp_build_mul( &bld->bld_base.base, tmp5, tmp1);
1958 }
1959
1960 /* dst.z = xmm1 * src.z */
1961 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_Z)) {
1962 emit_data->output[TGSI_CHAN_Z] = lp_build_mul( &bld->bld_base.base, tmp6, tmp1);
1963 }
1964 /* dst.w = xmm1 * src.w */
1965 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_X) && dims == 4) {
1966 emit_data->output[TGSI_CHAN_W] = lp_build_mul( &bld->bld_base.base, tmp7, tmp1);
1967 }
1968 }
1969
1970 /* dst.w = 1.0 */
1971 if (TGSI_IS_DST0_CHANNEL_ENABLED(emit_data->inst, TGSI_CHAN_W) && dims == 3) {
1972 emit_data->output[TGSI_CHAN_W] = bld->bld_base.base.one;
1973 }
1974 }
1975
1976 static void emit_prologue(struct lp_build_tgsi_context * bld_base)
1977 {
1978 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
1979 struct gallivm_state * gallivm = bld_base->base.gallivm;
1980
1981 if (bld->indirect_files & (1 << TGSI_FILE_TEMPORARY)) {
1982 LLVMValueRef array_size =
1983 lp_build_const_int32(gallivm,
1984 bld_base->info->file_max[TGSI_FILE_TEMPORARY] * 4 + 4);
1985 bld->temps_array = lp_build_array_alloca(gallivm,
1986 bld_base->base.vec_type, array_size,
1987 "temp_array");
1988 }
1989
1990 if (bld->indirect_files & (1 << TGSI_FILE_OUTPUT)) {
1991 LLVMValueRef array_size =
1992 lp_build_const_int32(gallivm,
1993 bld_base->info->file_max[TGSI_FILE_OUTPUT] * 4 + 4);
1994 bld->outputs_array = lp_build_array_alloca(gallivm,
1995 bld_base->base.vec_type, array_size,
1996 "output_array");
1997 }
1998
1999 /* If we have indirect addressing in inputs we need to copy them into
2000 * our alloca array to be able to iterate over them */
2001 if (bld->indirect_files & (1 << TGSI_FILE_INPUT)) {
2002 unsigned index, chan;
2003 LLVMTypeRef vec_type = bld_base->base.vec_type;
2004 LLVMValueRef array_size = lp_build_const_int32(gallivm,
2005 bld_base->info->file_max[TGSI_FILE_INPUT]*4 + 4);
2006 bld->inputs_array = lp_build_array_alloca(gallivm,
2007 vec_type, array_size,
2008 "input_array");
2009
2010 assert(bld_base->info->num_inputs
2011 <= bld_base->info->file_max[TGSI_FILE_INPUT] + 1);
2012
2013 for (index = 0; index < bld_base->info->num_inputs; ++index) {
2014 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
2015 LLVMValueRef lindex =
2016 lp_build_const_int32(gallivm, index * 4 + chan);
2017 LLVMValueRef input_ptr =
2018 LLVMBuildGEP(gallivm->builder, bld->inputs_array,
2019 &lindex, 1, "");
2020 LLVMValueRef value = bld->inputs[index][chan];
2021 if (value)
2022 LLVMBuildStore(gallivm->builder, value, input_ptr);
2023 }
2024 }
2025 }
2026 }
2027
2028 static void emit_epilogue(struct lp_build_tgsi_context * bld_base)
2029 {
2030 struct lp_build_tgsi_soa_context * bld = lp_soa_context(bld_base);
2031
2032 if (0) {
2033 /* for debugging */
2034 emit_dump_temps(bld);
2035 }
2036
2037 /* If we have indirect addressing in outputs we need to copy our alloca array
2038 * to the outputs slots specified by the called */
2039 if (bld->indirect_files & (1 << TGSI_FILE_OUTPUT)) {
2040 unsigned index, chan;
2041 assert(bld_base->info->num_outputs <=
2042 bld_base->info->file_max[TGSI_FILE_OUTPUT] + 1);
2043 for (index = 0; index < bld_base->info->num_outputs; ++index) {
2044 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
2045 bld->outputs[index][chan] = lp_get_output_ptr(bld, index, chan);
2046 }
2047 }
2048 }
2049 }
2050
2051 void
2052 lp_build_tgsi_soa(struct gallivm_state *gallivm,
2053 const struct tgsi_token *tokens,
2054 struct lp_type type,
2055 struct lp_build_mask_context *mask,
2056 LLVMValueRef consts_ptr,
2057 const struct lp_bld_tgsi_system_values *system_values,
2058 const LLVMValueRef *pos,
2059 const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS],
2060 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
2061 struct lp_build_sampler_soa *sampler,
2062 const struct tgsi_shader_info *info)
2063 {
2064 struct lp_build_tgsi_soa_context bld;
2065
2066 struct lp_type res_type;
2067
2068 assert(type.length <= LP_MAX_VECTOR_LENGTH);
2069 memset(&res_type, 0, sizeof res_type);
2070 res_type.width = type.width;
2071 res_type.length = type.length;
2072 res_type.sign = 1;
2073
2074 /* Setup build context */
2075 memset(&bld, 0, sizeof bld);
2076 lp_build_context_init(&bld.bld_base.base, gallivm, type);
2077 lp_build_context_init(&bld.bld_base.uint_bld, gallivm, lp_uint_type(type));
2078 lp_build_context_init(&bld.bld_base.int_bld, gallivm, lp_int_type(type));
2079 lp_build_context_init(&bld.elem_bld, gallivm, lp_elem_type(type));
2080 bld.mask = mask;
2081 bld.pos = pos;
2082 bld.inputs = inputs;
2083 bld.outputs = outputs;
2084 bld.consts_ptr = consts_ptr;
2085 bld.sampler = sampler;
2086 bld.bld_base.info = info;
2087 bld.indirect_files = info->indirect_files;
2088
2089 bld.bld_base.soa = TRUE;
2090 bld.bld_base.emit_fetch_funcs[TGSI_FILE_CONSTANT] = emit_fetch_constant;
2091 bld.bld_base.emit_fetch_funcs[TGSI_FILE_IMMEDIATE] = emit_fetch_immediate;
2092 bld.bld_base.emit_fetch_funcs[TGSI_FILE_INPUT] = emit_fetch_input;
2093 bld.bld_base.emit_fetch_funcs[TGSI_FILE_TEMPORARY] = emit_fetch_temporary;
2094 bld.bld_base.emit_fetch_funcs[TGSI_FILE_SYSTEM_VALUE] = emit_fetch_system_value;
2095 bld.bld_base.emit_store = emit_store;
2096
2097 bld.bld_base.emit_declaration = lp_emit_declaration_soa;
2098 bld.bld_base.emit_immediate = lp_emit_immediate_soa;
2099
2100 bld.bld_base.emit_prologue = emit_prologue;
2101 bld.bld_base.emit_epilogue = emit_epilogue;
2102
2103 /* Set opcode actions */
2104 lp_set_default_actions_cpu(&bld.bld_base);
2105
2106 bld.bld_base.op_actions[TGSI_OPCODE_BGNLOOP].emit = bgnloop_emit;
2107 bld.bld_base.op_actions[TGSI_OPCODE_BGNSUB].emit = bgnsub_emit;
2108 bld.bld_base.op_actions[TGSI_OPCODE_BRK].emit = brk_emit;
2109 bld.bld_base.op_actions[TGSI_OPCODE_CAL].emit = cal_emit;
2110 bld.bld_base.op_actions[TGSI_OPCODE_CONT].emit = cont_emit;
2111 bld.bld_base.op_actions[TGSI_OPCODE_DDX].emit = ddx_emit;
2112 bld.bld_base.op_actions[TGSI_OPCODE_DDY].emit = ddy_emit;
2113 bld.bld_base.op_actions[TGSI_OPCODE_ELSE].emit = else_emit;
2114 bld.bld_base.op_actions[TGSI_OPCODE_ENDIF].emit = endif_emit;
2115 bld.bld_base.op_actions[TGSI_OPCODE_ENDLOOP].emit = endloop_emit;
2116 bld.bld_base.op_actions[TGSI_OPCODE_ENDSUB].emit = endsub_emit;
2117 bld.bld_base.op_actions[TGSI_OPCODE_IF].emit = if_emit;
2118 bld.bld_base.op_actions[TGSI_OPCODE_KIL].emit = kil_emit;
2119 bld.bld_base.op_actions[TGSI_OPCODE_KILP].emit = kilp_emit;
2120 bld.bld_base.op_actions[TGSI_OPCODE_NRM].emit = nrm_emit;
2121 bld.bld_base.op_actions[TGSI_OPCODE_NRM4].emit = nrm_emit;
2122 bld.bld_base.op_actions[TGSI_OPCODE_RET].emit = ret_emit;
2123 bld.bld_base.op_actions[TGSI_OPCODE_TEX].emit = tex_emit;
2124 bld.bld_base.op_actions[TGSI_OPCODE_TXB].emit = txb_emit;
2125 bld.bld_base.op_actions[TGSI_OPCODE_TXD].emit = txd_emit;
2126 bld.bld_base.op_actions[TGSI_OPCODE_TXL].emit = txl_emit;
2127 bld.bld_base.op_actions[TGSI_OPCODE_TXP].emit = txp_emit;
2128 bld.bld_base.op_actions[TGSI_OPCODE_TXQ].emit = txq_emit;
2129
2130 lp_exec_mask_init(&bld.exec_mask, &bld.bld_base.base);
2131
2132 bld.system_values = *system_values;
2133
2134 lp_build_tgsi_llvm(&bld.bld_base, tokens);
2135
2136 if (0) {
2137 LLVMBasicBlockRef block = LLVMGetInsertBlock(gallivm->builder);
2138 LLVMValueRef function = LLVMGetBasicBlockParent(block);
2139 debug_printf("11111111111111111111111111111 \n");
2140 tgsi_dump(tokens, 0);
2141 lp_debug_dump_value(function);
2142 debug_printf("2222222222222222222222222222 \n");
2143 }
2144
2145 if (0) {
2146 LLVMModuleRef module = LLVMGetGlobalParent(
2147 LLVMGetBasicBlockParent(LLVMGetInsertBlock(gallivm->builder)));
2148 LLVMDumpModule(module);
2149
2150 }
2151 }