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draw: don't use clipvertex output if user plane clipping is disabled
[mesa.git] / src / gallium / auxiliary / draw / draw_llvm.c
1 /**************************************************************************
2 *
3 * Copyright 2010 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "draw_llvm.h"
29
30 #include "draw_context.h"
31 #include "draw_vs.h"
32 #include "draw_gs.h"
33
34 #include "gallivm/lp_bld_arit.h"
35 #include "gallivm/lp_bld_arit_overflow.h"
36 #include "gallivm/lp_bld_logic.h"
37 #include "gallivm/lp_bld_const.h"
38 #include "gallivm/lp_bld_swizzle.h"
39 #include "gallivm/lp_bld_struct.h"
40 #include "gallivm/lp_bld_type.h"
41 #include "gallivm/lp_bld_flow.h"
42 #include "gallivm/lp_bld_debug.h"
43 #include "gallivm/lp_bld_tgsi.h"
44 #include "gallivm/lp_bld_printf.h"
45 #include "gallivm/lp_bld_intr.h"
46 #include "gallivm/lp_bld_init.h"
47 #include "gallivm/lp_bld_type.h"
48 #include "gallivm/lp_bld_pack.h"
49 #include "gallivm/lp_bld_format.h"
50
51 #include "tgsi/tgsi_exec.h"
52 #include "tgsi/tgsi_dump.h"
53
54 #include "util/u_math.h"
55 #include "util/u_pointer.h"
56 #include "util/u_string.h"
57 #include "util/u_simple_list.h"
58
59
60 #define DEBUG_STORE 0
61
62
63 static void
64 draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *var,
65 boolean elts);
66
67
68 struct draw_gs_llvm_iface {
69 struct lp_build_tgsi_gs_iface base;
70
71 struct draw_gs_llvm_variant *variant;
72 LLVMValueRef input;
73 };
74
75 static INLINE const struct draw_gs_llvm_iface *
76 draw_gs_llvm_iface(const struct lp_build_tgsi_gs_iface *iface)
77 {
78 return (const struct draw_gs_llvm_iface *)iface;
79 }
80
81 /**
82 * Create LLVM type for draw_vertex_buffer.
83 */
84 static LLVMTypeRef
85 create_jit_dvbuffer_type(struct gallivm_state *gallivm,
86 const char *struct_name)
87 {
88 LLVMTargetDataRef target = gallivm->target;
89 LLVMTypeRef dvbuffer_type;
90 LLVMTypeRef elem_types[DRAW_JIT_DVBUFFER_NUM_FIELDS];
91 LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
92
93 elem_types[DRAW_JIT_DVBUFFER_MAP] =
94 LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 8), 0);
95 elem_types[DRAW_JIT_DVBUFFER_SIZE] = int32_type;
96
97 dvbuffer_type = LLVMStructTypeInContext(gallivm->context, elem_types,
98 Elements(elem_types), 0);
99
100 LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, map,
101 target, dvbuffer_type,
102 DRAW_JIT_DVBUFFER_MAP);
103 LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, size,
104 target, dvbuffer_type,
105 DRAW_JIT_DVBUFFER_SIZE);
106
107 return dvbuffer_type;
108 }
109
110 /**
111 * Create LLVM type for struct draw_jit_texture
112 */
113 static LLVMTypeRef
114 create_jit_texture_type(struct gallivm_state *gallivm, const char *struct_name)
115 {
116 LLVMTargetDataRef target = gallivm->target;
117 LLVMTypeRef texture_type;
118 LLVMTypeRef elem_types[DRAW_JIT_TEXTURE_NUM_FIELDS];
119 LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
120
121 elem_types[DRAW_JIT_TEXTURE_WIDTH] =
122 elem_types[DRAW_JIT_TEXTURE_HEIGHT] =
123 elem_types[DRAW_JIT_TEXTURE_DEPTH] =
124 elem_types[DRAW_JIT_TEXTURE_FIRST_LEVEL] =
125 elem_types[DRAW_JIT_TEXTURE_LAST_LEVEL] = int32_type;
126 elem_types[DRAW_JIT_TEXTURE_BASE] =
127 LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
128 elem_types[DRAW_JIT_TEXTURE_ROW_STRIDE] =
129 elem_types[DRAW_JIT_TEXTURE_IMG_STRIDE] =
130 elem_types[DRAW_JIT_TEXTURE_MIP_OFFSETS] =
131 LLVMArrayType(int32_type, PIPE_MAX_TEXTURE_LEVELS);
132
133 texture_type = LLVMStructTypeInContext(gallivm->context, elem_types,
134 Elements(elem_types), 0);
135
136 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, width,
137 target, texture_type,
138 DRAW_JIT_TEXTURE_WIDTH);
139 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, height,
140 target, texture_type,
141 DRAW_JIT_TEXTURE_HEIGHT);
142 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, depth,
143 target, texture_type,
144 DRAW_JIT_TEXTURE_DEPTH);
145 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, first_level,
146 target, texture_type,
147 DRAW_JIT_TEXTURE_FIRST_LEVEL);
148 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, last_level,
149 target, texture_type,
150 DRAW_JIT_TEXTURE_LAST_LEVEL);
151 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, base,
152 target, texture_type,
153 DRAW_JIT_TEXTURE_BASE);
154 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, row_stride,
155 target, texture_type,
156 DRAW_JIT_TEXTURE_ROW_STRIDE);
157 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, img_stride,
158 target, texture_type,
159 DRAW_JIT_TEXTURE_IMG_STRIDE);
160 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, mip_offsets,
161 target, texture_type,
162 DRAW_JIT_TEXTURE_MIP_OFFSETS);
163
164 LP_CHECK_STRUCT_SIZE(struct draw_jit_texture, target, texture_type);
165
166 return texture_type;
167 }
168
169
170 /**
171 * Create LLVM type for struct draw_jit_sampler
172 */
173 static LLVMTypeRef
174 create_jit_sampler_type(struct gallivm_state *gallivm, const char *struct_name)
175 {
176 LLVMTargetDataRef target = gallivm->target;
177 LLVMTypeRef sampler_type;
178 LLVMTypeRef elem_types[DRAW_JIT_SAMPLER_NUM_FIELDS];
179
180 elem_types[DRAW_JIT_SAMPLER_MIN_LOD] =
181 elem_types[DRAW_JIT_SAMPLER_MAX_LOD] =
182 elem_types[DRAW_JIT_SAMPLER_LOD_BIAS] = LLVMFloatTypeInContext(gallivm->context);
183 elem_types[DRAW_JIT_SAMPLER_BORDER_COLOR] =
184 LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
185
186 sampler_type = LLVMStructTypeInContext(gallivm->context, elem_types,
187 Elements(elem_types), 0);
188
189 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, min_lod,
190 target, sampler_type,
191 DRAW_JIT_SAMPLER_MIN_LOD);
192 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, max_lod,
193 target, sampler_type,
194 DRAW_JIT_SAMPLER_MAX_LOD);
195 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, lod_bias,
196 target, sampler_type,
197 DRAW_JIT_SAMPLER_LOD_BIAS);
198 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, border_color,
199 target, sampler_type,
200 DRAW_JIT_SAMPLER_BORDER_COLOR);
201
202 LP_CHECK_STRUCT_SIZE(struct draw_jit_sampler, target, sampler_type);
203
204 return sampler_type;
205 }
206
207
208 /**
209 * Create LLVM type for struct draw_jit_context
210 */
211 static LLVMTypeRef
212 create_jit_context_type(struct gallivm_state *gallivm,
213 LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
214 const char *struct_name)
215 {
216 LLVMTargetDataRef target = gallivm->target;
217 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
218 LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
219 LLVMTypeRef elem_types[DRAW_JIT_CTX_NUM_FIELDS];
220 LLVMTypeRef context_type;
221
222 elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* vs_constants */
223 LP_MAX_TGSI_CONST_BUFFERS);
224 elem_types[1] = LLVMArrayType(int_type, /* num_vs_constants */
225 LP_MAX_TGSI_CONST_BUFFERS);
226 elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
227 DRAW_TOTAL_CLIP_PLANES), 0);
228 elem_types[3] = LLVMPointerType(float_type, 0); /* viewport */
229 elem_types[4] = LLVMArrayType(texture_type,
230 PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
231 elem_types[5] = LLVMArrayType(sampler_type,
232 PIPE_MAX_SAMPLERS); /* samplers */
233 context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
234 Elements(elem_types), 0);
235 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, vs_constants,
236 target, context_type, DRAW_JIT_CTX_CONSTANTS);
237 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, num_vs_constants,
238 target, context_type, DRAW_JIT_CTX_NUM_CONSTANTS);
239 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, planes,
240 target, context_type, DRAW_JIT_CTX_PLANES);
241 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, viewport,
242 target, context_type, DRAW_JIT_CTX_VIEWPORT);
243 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, textures,
244 target, context_type,
245 DRAW_JIT_CTX_TEXTURES);
246 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, samplers,
247 target, context_type,
248 DRAW_JIT_CTX_SAMPLERS);
249 LP_CHECK_STRUCT_SIZE(struct draw_jit_context,
250 target, context_type);
251
252 return context_type;
253 }
254
255
256 /**
257 * Create LLVM type for struct draw_gs_jit_context
258 */
259 static LLVMTypeRef
260 create_gs_jit_context_type(struct gallivm_state *gallivm,
261 unsigned vector_length,
262 LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
263 const char *struct_name)
264 {
265 LLVMTargetDataRef target = gallivm->target;
266 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
267 LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
268 LLVMTypeRef elem_types[DRAW_GS_JIT_CTX_NUM_FIELDS];
269 LLVMTypeRef context_type;
270
271 elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* constants */
272 LP_MAX_TGSI_CONST_BUFFERS);
273 elem_types[1] = LLVMArrayType(int_type, /* num_constants */
274 LP_MAX_TGSI_CONST_BUFFERS);
275 elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
276 DRAW_TOTAL_CLIP_PLANES), 0);
277 elem_types[3] = LLVMPointerType(float_type, 0); /* viewport */
278
279 elem_types[4] = LLVMArrayType(texture_type,
280 PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
281 elem_types[5] = LLVMArrayType(sampler_type,
282 PIPE_MAX_SAMPLERS); /* samplers */
283
284 elem_types[6] = LLVMPointerType(LLVMPointerType(int_type, 0), 0);
285 elem_types[7] = LLVMPointerType(LLVMVectorType(int_type,
286 vector_length), 0);
287 elem_types[8] = LLVMPointerType(LLVMVectorType(int_type,
288 vector_length), 0);
289
290 context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
291 Elements(elem_types), 0);
292
293 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, constants,
294 target, context_type, DRAW_GS_JIT_CTX_CONSTANTS);
295 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, num_constants,
296 target, context_type, DRAW_GS_JIT_CTX_NUM_CONSTANTS);
297 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, planes,
298 target, context_type, DRAW_GS_JIT_CTX_PLANES);
299 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, viewport,
300 target, context_type, DRAW_GS_JIT_CTX_VIEWPORT);
301 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, textures,
302 target, context_type,
303 DRAW_GS_JIT_CTX_TEXTURES);
304 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, samplers,
305 target, context_type,
306 DRAW_GS_JIT_CTX_SAMPLERS);
307 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, prim_lengths,
308 target, context_type,
309 DRAW_GS_JIT_CTX_PRIM_LENGTHS);
310 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_vertices,
311 target, context_type,
312 DRAW_GS_JIT_CTX_EMITTED_VERTICES);
313 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_prims,
314 target, context_type,
315 DRAW_GS_JIT_CTX_EMITTED_PRIMS);
316 LP_CHECK_STRUCT_SIZE(struct draw_gs_jit_context,
317 target, context_type);
318
319 return context_type;
320 }
321
322
323 static LLVMTypeRef
324 create_gs_jit_input_type(struct gallivm_state *gallivm)
325 {
326 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
327 LLVMTypeRef input_array;
328
329 input_array = LLVMVectorType(float_type, TGSI_NUM_CHANNELS); /* num primitives */
330 input_array = LLVMArrayType(input_array, TGSI_NUM_CHANNELS); /* num channels */
331 input_array = LLVMArrayType(input_array, PIPE_MAX_SHADER_INPUTS); /* num attrs per vertex */
332 input_array = LLVMPointerType(input_array, 0); /* num vertices per prim */
333
334 return input_array;
335 }
336
337 /**
338 * Create LLVM type for struct pipe_vertex_buffer
339 */
340 static LLVMTypeRef
341 create_jit_vertex_buffer_type(struct gallivm_state *gallivm,
342 const char *struct_name)
343 {
344 LLVMTargetDataRef target = gallivm->target;
345 LLVMTypeRef elem_types[4];
346 LLVMTypeRef vb_type;
347
348 elem_types[0] =
349 elem_types[1] = LLVMInt32TypeInContext(gallivm->context);
350 elem_types[2] =
351 elem_types[3] = LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
352
353 vb_type = LLVMStructTypeInContext(gallivm->context, elem_types,
354 Elements(elem_types), 0);
355
356 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, stride,
357 target, vb_type, 0);
358 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, buffer_offset,
359 target, vb_type, 1);
360
361 LP_CHECK_STRUCT_SIZE(struct pipe_vertex_buffer, target, vb_type);
362
363 return vb_type;
364 }
365
366
367 /**
368 * Create LLVM type for struct vertex_header;
369 */
370 static LLVMTypeRef
371 create_jit_vertex_header(struct gallivm_state *gallivm, int data_elems)
372 {
373 LLVMTargetDataRef target = gallivm->target;
374 LLVMTypeRef elem_types[4];
375 LLVMTypeRef vertex_header;
376 char struct_name[24];
377
378 util_snprintf(struct_name, 23, "vertex_header%d", data_elems);
379
380 elem_types[DRAW_JIT_VERTEX_VERTEX_ID] = LLVMIntTypeInContext(gallivm->context, 32);
381 elem_types[DRAW_JIT_VERTEX_CLIP] = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
382 elem_types[DRAW_JIT_VERTEX_PRE_CLIP_POS] = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
383 elem_types[DRAW_JIT_VERTEX_DATA] = LLVMArrayType(elem_types[1], data_elems);
384
385 vertex_header = LLVMStructTypeInContext(gallivm->context, elem_types,
386 Elements(elem_types), 0);
387
388 /* these are bit-fields and we can't take address of them
389 LP_CHECK_MEMBER_OFFSET(struct vertex_header, clipmask,
390 target, vertex_header,
391 DRAW_JIT_VERTEX_CLIPMASK);
392 LP_CHECK_MEMBER_OFFSET(struct vertex_header, edgeflag,
393 target, vertex_header,
394 DRAW_JIT_VERTEX_EDGEFLAG);
395 LP_CHECK_MEMBER_OFFSET(struct vertex_header, pad,
396 target, vertex_header,
397 DRAW_JIT_VERTEX_PAD);
398 LP_CHECK_MEMBER_OFFSET(struct vertex_header, vertex_id,
399 target, vertex_header,
400 DRAW_JIT_VERTEX_VERTEX_ID);
401 */
402 LP_CHECK_MEMBER_OFFSET(struct vertex_header, clip,
403 target, vertex_header,
404 DRAW_JIT_VERTEX_CLIP);
405 LP_CHECK_MEMBER_OFFSET(struct vertex_header, pre_clip_pos,
406 target, vertex_header,
407 DRAW_JIT_VERTEX_PRE_CLIP_POS);
408 LP_CHECK_MEMBER_OFFSET(struct vertex_header, data,
409 target, vertex_header,
410 DRAW_JIT_VERTEX_DATA);
411
412 assert(LLVMABISizeOfType(target, vertex_header) ==
413 offsetof(struct vertex_header, data[data_elems]));
414
415 return vertex_header;
416 }
417
418
419 /**
420 * Create LLVM types for various structures.
421 */
422 static void
423 create_jit_types(struct draw_llvm_variant *variant)
424 {
425 struct gallivm_state *gallivm = variant->gallivm;
426 LLVMTypeRef texture_type, sampler_type, context_type, buffer_type,
427 vb_type;
428
429 texture_type = create_jit_texture_type(gallivm, "texture");
430 sampler_type = create_jit_sampler_type(gallivm, "sampler");
431
432 context_type = create_jit_context_type(gallivm, texture_type, sampler_type,
433 "draw_jit_context");
434 variant->context_ptr_type = LLVMPointerType(context_type, 0);
435
436 buffer_type = create_jit_dvbuffer_type(gallivm, "draw_vertex_buffer");
437 variant->buffer_ptr_type = LLVMPointerType(buffer_type, 0);
438
439 vb_type = create_jit_vertex_buffer_type(gallivm, "pipe_vertex_buffer");
440 variant->vb_ptr_type = LLVMPointerType(vb_type, 0);
441 }
442
443
444 static LLVMTypeRef
445 get_context_ptr_type(struct draw_llvm_variant *variant)
446 {
447 if (!variant->context_ptr_type)
448 create_jit_types(variant);
449 return variant->context_ptr_type;
450 }
451
452
453 static LLVMTypeRef
454 get_buffer_ptr_type(struct draw_llvm_variant *variant)
455 {
456 if (!variant->buffer_ptr_type)
457 create_jit_types(variant);
458 return variant->buffer_ptr_type;
459 }
460
461
462 static LLVMTypeRef
463 get_vb_ptr_type(struct draw_llvm_variant *variant)
464 {
465 if (!variant->vb_ptr_type)
466 create_jit_types(variant);
467 return variant->vb_ptr_type;
468 }
469
470 static LLVMTypeRef
471 get_vertex_header_ptr_type(struct draw_llvm_variant *variant)
472 {
473 if (!variant->vertex_header_ptr_type)
474 create_jit_types(variant);
475 return variant->vertex_header_ptr_type;
476 }
477
478
479 /**
480 * Create per-context LLVM info.
481 */
482 struct draw_llvm *
483 draw_llvm_create(struct draw_context *draw)
484 {
485 struct draw_llvm *llvm;
486
487 llvm = CALLOC_STRUCT( draw_llvm );
488 if (!llvm)
489 return NULL;
490
491 lp_build_init();
492
493 llvm->draw = draw;
494
495 llvm->nr_variants = 0;
496 make_empty_list(&llvm->vs_variants_list);
497
498 llvm->nr_gs_variants = 0;
499 make_empty_list(&llvm->gs_variants_list);
500
501 return llvm;
502 }
503
504
505 /**
506 * Free per-context LLVM info.
507 */
508 void
509 draw_llvm_destroy(struct draw_llvm *llvm)
510 {
511 /* XXX free other draw_llvm data? */
512 FREE(llvm);
513 }
514
515
516 /**
517 * Create LLVM-generated code for a vertex shader.
518 */
519 struct draw_llvm_variant *
520 draw_llvm_create_variant(struct draw_llvm *llvm,
521 unsigned num_inputs,
522 const struct draw_llvm_variant_key *key)
523 {
524 struct draw_llvm_variant *variant;
525 struct llvm_vertex_shader *shader =
526 llvm_vertex_shader(llvm->draw->vs.vertex_shader);
527 LLVMTypeRef vertex_header;
528 char module_name[64];
529
530 variant = MALLOC(sizeof *variant +
531 shader->variant_key_size -
532 sizeof variant->key);
533 if (variant == NULL)
534 return NULL;
535
536 variant->llvm = llvm;
537 variant->shader = shader;
538
539 util_snprintf(module_name, sizeof(module_name), "draw_llvm_vs_variant%u",
540 variant->shader->variants_cached);
541
542 variant->gallivm = gallivm_create(module_name);
543
544 create_jit_types(variant);
545
546 memcpy(&variant->key, key, shader->variant_key_size);
547
548 vertex_header = create_jit_vertex_header(variant->gallivm, num_inputs);
549
550 variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
551
552 draw_llvm_generate(llvm, variant, FALSE); /* linear */
553 draw_llvm_generate(llvm, variant, TRUE); /* elts */
554
555 gallivm_compile_module(variant->gallivm);
556
557 variant->jit_func = (draw_jit_vert_func)
558 gallivm_jit_function(variant->gallivm, variant->function);
559
560 variant->jit_func_elts = (draw_jit_vert_func_elts)
561 gallivm_jit_function(variant->gallivm, variant->function_elts);
562
563 gallivm_free_ir(variant->gallivm);
564
565 variant->list_item_global.base = variant;
566 variant->list_item_local.base = variant;
567 /*variant->no = */shader->variants_created++;
568 variant->list_item_global.base = variant;
569
570 return variant;
571 }
572
573
574 static void
575 generate_vs(struct draw_llvm_variant *variant,
576 LLVMBuilderRef builder,
577 struct lp_type vs_type,
578 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
579 const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS],
580 const struct lp_bld_tgsi_system_values *system_values,
581 LLVMValueRef context_ptr,
582 struct lp_build_sampler_soa *draw_sampler,
583 boolean clamp_vertex_color)
584 {
585 struct draw_llvm *llvm = variant->llvm;
586 const struct tgsi_token *tokens = llvm->draw->vs.vertex_shader->state.tokens;
587 LLVMValueRef consts_ptr =
588 draw_jit_context_vs_constants(variant->gallivm, context_ptr);
589 LLVMValueRef num_consts_ptr =
590 draw_jit_context_num_vs_constants(variant->gallivm, context_ptr);
591 struct lp_build_sampler_soa *sampler = 0;
592
593 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
594 tgsi_dump(tokens, 0);
595 draw_llvm_dump_variant_key(&variant->key);
596 }
597
598 if (llvm->draw->num_sampler_views && llvm->draw->num_samplers)
599 sampler = draw_sampler;
600
601 lp_build_tgsi_soa(variant->gallivm,
602 tokens,
603 vs_type,
604 NULL /*struct lp_build_mask_context *mask*/,
605 consts_ptr,
606 num_consts_ptr,
607 system_values,
608 inputs,
609 outputs,
610 sampler,
611 &llvm->draw->vs.vertex_shader->info,
612 NULL);
613
614 {
615 LLVMValueRef out;
616 unsigned chan, attrib;
617 struct lp_build_context bld;
618 struct tgsi_shader_info* info = &llvm->draw->vs.vertex_shader->info;
619 lp_build_context_init(&bld, variant->gallivm, vs_type);
620
621 for (attrib = 0; attrib < info->num_outputs; ++attrib) {
622 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
623 if (outputs[attrib][chan]) {
624 switch (info->output_semantic_name[attrib]) {
625 case TGSI_SEMANTIC_COLOR:
626 case TGSI_SEMANTIC_BCOLOR:
627 if (clamp_vertex_color) {
628 out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
629 out = lp_build_clamp(&bld, out, bld.zero, bld.one);
630 LLVMBuildStore(builder, out, outputs[attrib][chan]);
631 }
632 break;
633 }
634 }
635 }
636 }
637 }
638 }
639
640 static void
641 generate_fetch(struct gallivm_state *gallivm,
642 struct draw_context *draw,
643 LLVMValueRef vbuffers_ptr,
644 LLVMValueRef *res,
645 struct pipe_vertex_element *velem,
646 LLVMValueRef vbuf,
647 LLVMValueRef index,
648 LLVMValueRef instance_id)
649 {
650 const struct util_format_description *format_desc =
651 util_format_description(velem->src_format);
652 LLVMValueRef zero = LLVMConstNull(LLVMInt32TypeInContext(gallivm->context));
653 LLVMBuilderRef builder = gallivm->builder;
654 LLVMValueRef indices =
655 LLVMConstInt(LLVMInt64TypeInContext(gallivm->context),
656 velem->vertex_buffer_index, 0);
657 LLVMValueRef vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr,
658 &indices, 1, "");
659 LLVMValueRef vb_stride = draw_jit_vbuffer_stride(gallivm, vbuf);
660 LLVMValueRef vb_buffer_offset = draw_jit_vbuffer_offset(gallivm, vbuf);
661 LLVMValueRef map_ptr = draw_jit_dvbuffer_map(gallivm, vbuffer_ptr);
662 LLVMValueRef buffer_size = draw_jit_dvbuffer_size(gallivm, vbuffer_ptr);
663 LLVMValueRef stride;
664 LLVMValueRef buffer_overflowed;
665 LLVMValueRef needed_buffer_size;
666 LLVMValueRef temp_ptr =
667 lp_build_alloca(gallivm,
668 lp_build_vec_type(gallivm, lp_float32_vec4_type()), "");
669 LLVMValueRef ofbit = NULL;
670 struct lp_build_if_state if_ctx;
671
672 if (velem->instance_divisor) {
673 /* Index is equal to the start instance plus the number of current
674 * instance divided by the divisor. In this case we compute it as:
675 * index = start_instance + (instance_id / divisor)
676 */
677 LLVMValueRef current_instance;
678 index = lp_build_const_int32(gallivm, draw->start_instance);
679 current_instance = LLVMBuildUDiv(builder, instance_id,
680 lp_build_const_int32(gallivm, velem->instance_divisor),
681 "instance_divisor");
682 index = lp_build_uadd_overflow(gallivm, index, current_instance, &ofbit);
683 }
684
685 stride = lp_build_umul_overflow(gallivm, vb_stride, index, &ofbit);
686 stride = lp_build_uadd_overflow(gallivm, stride, vb_buffer_offset, &ofbit);
687 stride = lp_build_uadd_overflow(
688 gallivm, stride,
689 lp_build_const_int32(gallivm, velem->src_offset), &ofbit);
690 needed_buffer_size = lp_build_uadd_overflow(
691 gallivm, stride,
692 lp_build_const_int32(gallivm,
693 util_format_get_blocksize(velem->src_format)),
694 &ofbit);
695
696 buffer_overflowed = LLVMBuildICmp(builder, LLVMIntUGT,
697 needed_buffer_size, buffer_size,
698 "buffer_overflowed");
699 buffer_overflowed = LLVMBuildOr(builder, buffer_overflowed, ofbit, "");
700 #if 0
701 lp_build_printf(gallivm, "vbuf index = %u, vb_stride is %u\n",
702 index, vb_stride);
703 lp_build_printf(gallivm, " vb_buffer_offset = %u, src_offset is %u\n",
704 vb_buffer_offset,
705 lp_build_const_int32(gallivm, velem->src_offset));
706 lp_build_print_value(gallivm, " blocksize = ",
707 lp_build_const_int32(
708 gallivm,
709 util_format_get_blocksize(velem->src_format)));
710 lp_build_printf(gallivm, " instance_id = %u\n", instance_id);
711 lp_build_printf(gallivm, " stride = %u\n", stride);
712 lp_build_printf(gallivm, " buffer size = %u\n", buffer_size);
713 lp_build_printf(gallivm, " needed_buffer_size = %u\n", needed_buffer_size);
714 lp_build_print_value(gallivm, " buffer overflowed = ", buffer_overflowed);
715 #endif
716
717 lp_build_if(&if_ctx, gallivm, buffer_overflowed);
718 {
719 LLVMValueRef val =
720 lp_build_const_vec(gallivm, lp_float32_vec4_type(), 0);
721 LLVMBuildStore(builder, val, temp_ptr);
722 }
723 lp_build_else(&if_ctx);
724 {
725 LLVMValueRef val;
726 map_ptr = LLVMBuildGEP(builder, map_ptr, &stride, 1, "");
727
728 val = lp_build_fetch_rgba_aos(gallivm,
729 format_desc,
730 lp_float32_vec4_type(),
731 map_ptr,
732 zero, zero, zero);
733 LLVMBuildStore(builder, val, temp_ptr);
734 }
735 lp_build_endif(&if_ctx);
736
737 *res = LLVMBuildLoad(builder, temp_ptr, "aos");
738 }
739
740 static void
741 convert_to_soa(struct gallivm_state *gallivm,
742 LLVMValueRef (*src_aos)[LP_MAX_VECTOR_WIDTH / 32],
743 LLVMValueRef (*dst_soa)[TGSI_NUM_CHANNELS],
744 unsigned num_attribs, const struct lp_type soa_type)
745 {
746 unsigned i, j, k;
747 struct lp_type aos_channel_type = soa_type;
748
749 debug_assert(TGSI_NUM_CHANNELS == 4);
750 debug_assert((soa_type.length % TGSI_NUM_CHANNELS) == 0);
751
752 aos_channel_type.length >>= 1;
753
754 for (i = 0; i < num_attribs; ++i) {
755 LLVMValueRef aos_channels[TGSI_NUM_CHANNELS];
756 unsigned pixels_per_channel = soa_type.length / TGSI_NUM_CHANNELS;
757
758 for (j = 0; j < TGSI_NUM_CHANNELS; ++j) {
759 LLVMValueRef channel[LP_MAX_VECTOR_LENGTH] = { 0 };
760
761 assert(pixels_per_channel <= LP_MAX_VECTOR_LENGTH);
762
763 for (k = 0; k < pixels_per_channel; ++k) {
764 channel[k] = src_aos[i][j + TGSI_NUM_CHANNELS * k];
765 }
766
767 aos_channels[j] = lp_build_concat(gallivm, channel, aos_channel_type, pixels_per_channel);
768 }
769
770 lp_build_transpose_aos(gallivm, soa_type, aos_channels, dst_soa[i]);
771 }
772 }
773
774
775 static void
776 store_aos(struct gallivm_state *gallivm,
777 LLVMValueRef io_ptr,
778 LLVMValueRef index,
779 LLVMValueRef value)
780 {
781 LLVMTypeRef data_ptr_type = LLVMPointerType(lp_build_vec_type(gallivm, lp_float32_vec4_type()), 0);
782 LLVMBuilderRef builder = gallivm->builder;
783 LLVMValueRef data_ptr = draw_jit_header_data(gallivm, io_ptr);
784 LLVMValueRef indices[3];
785
786 indices[0] = lp_build_const_int32(gallivm, 0);
787 indices[1] = index;
788 indices[2] = lp_build_const_int32(gallivm, 0);
789
790 data_ptr = LLVMBuildGEP(builder, data_ptr, indices, 3, "");
791 data_ptr = LLVMBuildPointerCast(builder, data_ptr, data_ptr_type, "");
792
793 #if DEBUG_STORE
794 lp_build_printf(gallivm, " ---- %p storing attribute %d (io = %p)\n", data_ptr, index, io_ptr);
795 #endif
796
797 /* Unaligned store due to the vertex header */
798 lp_set_store_alignment(LLVMBuildStore(builder, value, data_ptr), sizeof(float));
799 }
800
801 /**
802 * Adjust the mask to architecture endianess. The mask will the store in struct:
803 *
804 * struct vertex_header {
805 * unsigned clipmask:DRAW_TOTAL_CLIP_PLANES;
806 * unsigned edgeflag:1;
807 * unsigned have_clipdist:1;
808 * unsigned vertex_id:16;
809 * [...]
810 * }
811 *
812 * On little-endian machine nothing needs to done, however on bit-endian machine
813 * the mask's fields need to be adjusted with the algorithm:
814 *
815 * uint32_t reverse (uint32_t x)
816 * {
817 * return (x >> 16) | // vertex_id
818 * ((x & 0x3fff) << 18) | // clipmask
819 * ((x & 0x4000) << 3) | // have_clipdist
820 * ((x & 0x8000) << 1); // edgeflag
821 * }
822 */
823 static LLVMValueRef
824 adjust_mask(struct gallivm_state *gallivm,
825 LLVMValueRef mask)
826 {
827 #ifdef PIPE_ARCH_BIG_ENDIAN
828 LLVMBuilderRef builder = gallivm->builder;
829 LLVMValueRef vertex_id;
830 LLVMValueRef clipmask;
831 LLVMValueRef have_clipdist;
832 LLVMValueRef edgeflag;
833
834 vertex_id = LLVMBuildLShr(builder, mask, lp_build_const_int32(gallivm, 16), "");
835 clipmask = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x3fff), "");
836 clipmask = LLVMBuildShl(builder, clipmask, lp_build_const_int32(gallivm, 18), "");
837 have_clipdist = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x4000), "");
838 have_clipdist = LLVMBuildShl(builder, have_clipdist, lp_build_const_int32(gallivm, 3), "");
839 edgeflag = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x8000), "");
840 edgeflag = LLVMBuildShl(builder, edgeflag, lp_build_const_int32(gallivm, 1), "");
841
842 mask = LLVMBuildOr(builder, vertex_id, clipmask, "");
843 mask = LLVMBuildOr(builder, mask, have_clipdist, "");
844 mask = LLVMBuildOr(builder, mask, edgeflag, "");
845 #endif
846 return mask;
847 }
848
849 static void
850 store_aos_array(struct gallivm_state *gallivm,
851 struct lp_type soa_type,
852 LLVMValueRef io_ptr,
853 LLVMValueRef *indices,
854 LLVMValueRef* aos,
855 int attrib,
856 int num_outputs,
857 LLVMValueRef clipmask,
858 boolean have_clipdist)
859 {
860 LLVMBuilderRef builder = gallivm->builder;
861 LLVMValueRef attr_index = lp_build_const_int32(gallivm, attrib);
862 LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
863 LLVMValueRef linear_inds[LP_MAX_VECTOR_WIDTH / 32];
864 LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
865 int vector_length = soa_type.length;
866 int i;
867
868 debug_assert(TGSI_NUM_CHANNELS == 4);
869
870 for (i = 0; i < vector_length; i++) {
871 linear_inds[i] = lp_build_const_int32(gallivm, i);
872 if (indices) {
873 inds[i] = indices[i];
874 } else {
875 inds[i] = linear_inds[i];
876 }
877 io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
878 }
879
880 if (attrib == 0) {
881 /* store vertex header for each of the n vertices */
882 LLVMValueRef val, cliptmp;
883 int vertex_id_pad_edgeflag;
884
885 /* If this assertion fails, it means we need to update the bit twidding
886 * code here. See struct vertex_header in draw_private.h.
887 */
888 assert(DRAW_TOTAL_CLIP_PLANES==14);
889 /* initialize vertex id:16 = 0xffff, have_clipdist:1 = 0, edgeflag:1 = 1 */
890 vertex_id_pad_edgeflag = (0xffff << 16) | (1 << DRAW_TOTAL_CLIP_PLANES);
891 if (have_clipdist)
892 vertex_id_pad_edgeflag |= 1 << (DRAW_TOTAL_CLIP_PLANES+1);
893 val = lp_build_const_int_vec(gallivm, lp_int_type(soa_type), vertex_id_pad_edgeflag);
894 /* OR with the clipmask */
895 cliptmp = LLVMBuildOr(builder, val, clipmask, "");
896 for (i = 0; i < vector_length; i++) {
897 LLVMValueRef id_ptr = draw_jit_header_id(gallivm, io_ptrs[i]);
898 val = LLVMBuildExtractElement(builder, cliptmp, linear_inds[i], "");
899 val = adjust_mask(gallivm, val);
900 #if DEBUG_STORE
901 lp_build_printf(gallivm, "io = %p, index %d, clipmask = %x\n",
902 io_ptrs[i], inds[i], val);
903 #endif
904 LLVMBuildStore(builder, val, id_ptr);
905 }
906 }
907
908 /* store for each of the n vertices */
909 for (i = 0; i < vector_length; i++) {
910 store_aos(gallivm, io_ptrs[i], attr_index, aos[i]);
911 }
912 }
913
914
915 static void
916 convert_to_aos(struct gallivm_state *gallivm,
917 LLVMValueRef io,
918 LLVMValueRef *indices,
919 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
920 LLVMValueRef clipmask,
921 int num_outputs,
922 struct lp_type soa_type,
923 boolean have_clipdist)
924 {
925 LLVMBuilderRef builder = gallivm->builder;
926 unsigned chan, attrib, i;
927
928 #if DEBUG_STORE
929 lp_build_printf(gallivm, " # storing begin\n");
930 #endif
931 for (attrib = 0; attrib < num_outputs; ++attrib) {
932 LLVMValueRef soa[TGSI_NUM_CHANNELS];
933 LLVMValueRef aos[LP_MAX_VECTOR_WIDTH / 32];
934 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
935 if (outputs[attrib][chan]) {
936 LLVMValueRef out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
937 lp_build_name(out, "output%u.%c", attrib, "xyzw"[chan]);
938 #if DEBUG_STORE
939 lp_build_printf(gallivm, "output %d : %d ",
940 LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
941 attrib, 0),
942 LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
943 chan, 0));
944 lp_build_print_value(gallivm, "val = ", out);
945 {
946 LLVMValueRef iv =
947 LLVMBuildBitCast(builder, out, lp_build_int_vec_type(gallivm, soa_type), "");
948
949 lp_build_print_value(gallivm, " ival = ", iv);
950 }
951 #endif
952 soa[chan] = out;
953 }
954 else {
955 soa[chan] = 0;
956 }
957 }
958
959
960 if (soa_type.length == TGSI_NUM_CHANNELS) {
961 lp_build_transpose_aos(gallivm, soa_type, soa, aos);
962 } else {
963 lp_build_transpose_aos(gallivm, soa_type, soa, soa);
964
965 for (i = 0; i < soa_type.length; ++i) {
966 aos[i] = lp_build_extract_range(gallivm,
967 soa[i % TGSI_NUM_CHANNELS],
968 (i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
969 TGSI_NUM_CHANNELS);
970 }
971 }
972
973 store_aos_array(gallivm,
974 soa_type,
975 io, indices,
976 aos,
977 attrib,
978 num_outputs,
979 clipmask, have_clipdist);
980 }
981 #if DEBUG_STORE
982 lp_build_printf(gallivm, " # storing end\n");
983 #endif
984 }
985
986
987 /**
988 * Stores original vertex positions in clip coordinates
989 */
990 static void
991 store_clip(struct gallivm_state *gallivm,
992 const struct lp_type vs_type,
993 LLVMValueRef io_ptr,
994 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
995 boolean pre_clip_pos, int idx)
996 {
997 LLVMBuilderRef builder = gallivm->builder;
998 LLVMValueRef soa[4];
999 LLVMValueRef aos[LP_MAX_VECTOR_LENGTH];
1000 LLVMValueRef indices[2];
1001 LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
1002 LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
1003 LLVMValueRef clip_ptrs[LP_MAX_VECTOR_WIDTH / 32];
1004 LLVMTypeRef clip_ptr_type =
1005 LLVMPointerType(LLVMVectorType(LLVMFloatTypeInContext(gallivm->context),
1006 4), 0);
1007 int i, j;
1008
1009 indices[0] =
1010 indices[1] = lp_build_const_int32(gallivm, 0);
1011
1012 for (i = 0; i < vs_type.length; i++) {
1013 inds[i] = lp_build_const_int32(gallivm, i);
1014 io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
1015 }
1016
1017 soa[0] = LLVMBuildLoad(builder, outputs[idx][0], ""); /*x0 x1 .. xn*/
1018 soa[1] = LLVMBuildLoad(builder, outputs[idx][1], ""); /*y0 y1 .. yn*/
1019 soa[2] = LLVMBuildLoad(builder, outputs[idx][2], ""); /*z0 z1 .. zn*/
1020 soa[3] = LLVMBuildLoad(builder, outputs[idx][3], ""); /*w0 w1 .. wn*/
1021
1022 if (!pre_clip_pos) {
1023 for (i = 0; i < vs_type.length; i++) {
1024 clip_ptrs[i] = draw_jit_header_clip(gallivm, io_ptrs[i]);
1025 }
1026 } else {
1027 for (i = 0; i < vs_type.length; i++) {
1028 clip_ptrs[i] = draw_jit_header_pre_clip_pos(gallivm, io_ptrs[i]);
1029 }
1030 }
1031
1032 lp_build_transpose_aos(gallivm, vs_type, soa, soa);
1033 for (i = 0; i < vs_type.length; ++i) {
1034 aos[i] = lp_build_extract_range(gallivm,
1035 soa[i % TGSI_NUM_CHANNELS],
1036 (i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
1037 TGSI_NUM_CHANNELS);
1038 }
1039
1040 for (j = 0; j < vs_type.length; j++) {
1041 LLVMValueRef clip_ptr;
1042
1043 clip_ptr = LLVMBuildGEP(builder, clip_ptrs[j], indices, 2, "clipo");
1044 clip_ptr = LLVMBuildPointerCast(builder, clip_ptr, clip_ptr_type, "");
1045
1046 /* Unaligned store */
1047 lp_set_store_alignment(LLVMBuildStore(builder, aos[j], clip_ptr), sizeof(float));
1048 }
1049 }
1050
1051
1052 /**
1053 * Transforms the outputs for viewport mapping
1054 */
1055 static void
1056 generate_viewport(struct draw_llvm_variant *variant,
1057 LLVMBuilderRef builder,
1058 struct lp_type vs_type,
1059 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
1060 LLVMValueRef context_ptr)
1061 {
1062 int i;
1063 struct gallivm_state *gallivm = variant->gallivm;
1064 struct lp_type f32_type = vs_type;
1065 const unsigned pos = variant->llvm->draw->vs.position_output;
1066 LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
1067 LLVMValueRef out3 = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn*/
1068 LLVMValueRef const1 = lp_build_const_vec(gallivm, f32_type, 1.0); /*1.0 1.0 1.0 1.0*/
1069 LLVMValueRef vp_ptr = draw_jit_context_viewport(gallivm, context_ptr);
1070
1071 /* for 1/w convention*/
1072 out3 = LLVMBuildFDiv(builder, const1, out3, "");
1073 LLVMBuildStore(builder, out3, outputs[pos][3]);
1074
1075 /* Viewport Mapping */
1076 for (i=0; i<3; i++) {
1077 LLVMValueRef out = LLVMBuildLoad(builder, outputs[pos][i], ""); /*x0 x1 .. xn*/
1078 LLVMValueRef scale;
1079 LLVMValueRef trans;
1080 LLVMValueRef scale_i;
1081 LLVMValueRef trans_i;
1082 LLVMValueRef index;
1083
1084 index = lp_build_const_int32(gallivm, i);
1085 scale_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
1086
1087 index = lp_build_const_int32(gallivm, i+4);
1088 trans_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
1089
1090 scale = lp_build_broadcast(gallivm, vs_type_llvm,
1091 LLVMBuildLoad(builder, scale_i, "scale"));
1092 trans = lp_build_broadcast(gallivm, vs_type_llvm,
1093 LLVMBuildLoad(builder, trans_i, "trans"));
1094
1095 /* divide by w */
1096 out = LLVMBuildFMul(builder, out, out3, "");
1097 /* mult by scale */
1098 out = LLVMBuildFMul(builder, out, scale, "");
1099 /* add translation */
1100 out = LLVMBuildFAdd(builder, out, trans, "");
1101
1102 /* store transformed outputs */
1103 LLVMBuildStore(builder, out, outputs[pos][i]);
1104 }
1105
1106 }
1107
1108
1109 /**
1110 * Returns clipmask as nxi32 bitmask for the n vertices
1111 */
1112 static LLVMValueRef
1113 generate_clipmask(struct draw_llvm *llvm,
1114 struct gallivm_state *gallivm,
1115 struct lp_type vs_type,
1116 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
1117 boolean clip_xy,
1118 boolean clip_z,
1119 boolean clip_user,
1120 boolean clip_halfz,
1121 unsigned ucp_enable,
1122 LLVMValueRef context_ptr,
1123 boolean *have_clipdist)
1124 {
1125 LLVMBuilderRef builder = gallivm->builder;
1126 LLVMValueRef mask; /* stores the <nxi32> clipmasks */
1127 LLVMValueRef test, temp;
1128 LLVMValueRef zero, shift;
1129 LLVMValueRef pos_x, pos_y, pos_z, pos_w;
1130 LLVMValueRef cv_x, cv_y, cv_z, cv_w;
1131 LLVMValueRef plane1, planes, plane_ptr, sum;
1132 struct lp_type f32_type = vs_type;
1133 struct lp_type i32_type = lp_int_type(vs_type);
1134 const unsigned pos = llvm->draw->vs.position_output;
1135 const unsigned cv = llvm->draw->vs.clipvertex_output;
1136 int num_written_clipdistance = llvm->draw->vs.vertex_shader->info.num_written_clipdistance;
1137 bool have_cd = false;
1138 unsigned cd[2];
1139
1140 cd[0] = llvm->draw->vs.clipdistance_output[0];
1141 cd[1] = llvm->draw->vs.clipdistance_output[1];
1142
1143 if (cd[0] != pos || cd[1] != pos)
1144 have_cd = true;
1145
1146 if (num_written_clipdistance && !clip_user) {
1147 clip_user = true;
1148 ucp_enable = (1 << num_written_clipdistance) - 1;
1149 }
1150
1151 mask = lp_build_const_int_vec(gallivm, i32_type, 0);
1152 temp = lp_build_const_int_vec(gallivm, i32_type, 0);
1153 zero = lp_build_const_vec(gallivm, f32_type, 0); /* 0.0f 0.0f 0.0f 0.0f */
1154 shift = lp_build_const_int_vec(gallivm, i32_type, 1); /* 1 1 1 1 */
1155
1156 /*
1157 * load clipvertex and position from correct locations.
1158 * if they are the same just load them once.
1159 */
1160 pos_x = LLVMBuildLoad(builder, outputs[pos][0], ""); /*x0 x1 .. xn */
1161 pos_y = LLVMBuildLoad(builder, outputs[pos][1], ""); /*y0 y1 .. yn */
1162 pos_z = LLVMBuildLoad(builder, outputs[pos][2], ""); /*z0 z1 .. zn */
1163 pos_w = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn */
1164
1165 if (clip_user && cv != pos) {
1166 cv_x = LLVMBuildLoad(builder, outputs[cv][0], ""); /*x0 x1 .. xn */
1167 cv_y = LLVMBuildLoad(builder, outputs[cv][1], ""); /*y0 y1 .. yn */
1168 cv_z = LLVMBuildLoad(builder, outputs[cv][2], ""); /*z0 z1 .. zn */
1169 cv_w = LLVMBuildLoad(builder, outputs[cv][3], ""); /*w0 w1 .. wn */
1170 } else {
1171 cv_x = pos_x;
1172 cv_y = pos_y;
1173 cv_z = pos_z;
1174 cv_w = pos_w;
1175 }
1176
1177 /* Cliptest, for hardwired planes */
1178 if (clip_xy) {
1179 /* plane 1 */
1180 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_x , pos_w);
1181 temp = shift;
1182 test = LLVMBuildAnd(builder, test, temp, "");
1183 mask = test;
1184
1185 /* plane 2 */
1186 test = LLVMBuildFAdd(builder, pos_x, pos_w, "");
1187 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1188 temp = LLVMBuildShl(builder, temp, shift, "");
1189 test = LLVMBuildAnd(builder, test, temp, "");
1190 mask = LLVMBuildOr(builder, mask, test, "");
1191
1192 /* plane 3 */
1193 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_y, pos_w);
1194 temp = LLVMBuildShl(builder, temp, shift, "");
1195 test = LLVMBuildAnd(builder, test, temp, "");
1196 mask = LLVMBuildOr(builder, mask, test, "");
1197
1198 /* plane 4 */
1199 test = LLVMBuildFAdd(builder, pos_y, pos_w, "");
1200 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1201 temp = LLVMBuildShl(builder, temp, shift, "");
1202 test = LLVMBuildAnd(builder, test, temp, "");
1203 mask = LLVMBuildOr(builder, mask, test, "");
1204 }
1205
1206 if (clip_z) {
1207 temp = lp_build_const_int_vec(gallivm, i32_type, 16);
1208 if (clip_halfz) {
1209 /* plane 5 */
1210 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, pos_z);
1211 test = LLVMBuildAnd(builder, test, temp, "");
1212 mask = LLVMBuildOr(builder, mask, test, "");
1213 }
1214 else {
1215 /* plane 5 */
1216 test = LLVMBuildFAdd(builder, pos_z, pos_w, "");
1217 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1218 test = LLVMBuildAnd(builder, test, temp, "");
1219 mask = LLVMBuildOr(builder, mask, test, "");
1220 }
1221 /* plane 6 */
1222 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_z, pos_w);
1223 temp = LLVMBuildShl(builder, temp, shift, "");
1224 test = LLVMBuildAnd(builder, test, temp, "");
1225 mask = LLVMBuildOr(builder, mask, test, "");
1226 }
1227
1228 if (clip_user) {
1229 LLVMValueRef planes_ptr = draw_jit_context_planes(gallivm, context_ptr);
1230 LLVMValueRef indices[3];
1231 LLVMValueRef is_nan_or_inf;
1232
1233 /* userclip planes */
1234 while (ucp_enable) {
1235 unsigned plane_idx = ffs(ucp_enable)-1;
1236 ucp_enable &= ~(1 << plane_idx);
1237 plane_idx += 6;
1238
1239 if (have_cd && num_written_clipdistance) {
1240 LLVMValueRef clipdist;
1241 int i;
1242 i = plane_idx - 6;
1243
1244 *have_clipdist = TRUE;
1245 if (i < 4) {
1246 clipdist = LLVMBuildLoad(builder, outputs[cd[0]][i], "");
1247 } else {
1248 clipdist = LLVMBuildLoad(builder, outputs[cd[1]][i-4], "");
1249 }
1250 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, clipdist);
1251 is_nan_or_inf = lp_build_is_inf_or_nan(gallivm, vs_type, clipdist);
1252 test = LLVMBuildOr(builder, test, is_nan_or_inf, "");
1253 temp = lp_build_const_int_vec(gallivm, i32_type, 1 << plane_idx);
1254 test = LLVMBuildAnd(builder, test, temp, "");
1255 mask = LLVMBuildOr(builder, mask, test, "");
1256 } else {
1257 LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
1258 indices[0] = lp_build_const_int32(gallivm, 0);
1259 indices[1] = lp_build_const_int32(gallivm, plane_idx);
1260
1261 indices[2] = lp_build_const_int32(gallivm, 0);
1262 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1263 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_x");
1264 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1265 sum = LLVMBuildFMul(builder, planes, cv_x, "");
1266
1267 indices[2] = lp_build_const_int32(gallivm, 1);
1268 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1269 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_y");
1270 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1271 test = LLVMBuildFMul(builder, planes, cv_y, "");
1272 sum = LLVMBuildFAdd(builder, sum, test, "");
1273
1274 indices[2] = lp_build_const_int32(gallivm, 2);
1275 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1276 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_z");
1277 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1278 test = LLVMBuildFMul(builder, planes, cv_z, "");
1279 sum = LLVMBuildFAdd(builder, sum, test, "");
1280
1281 indices[2] = lp_build_const_int32(gallivm, 3);
1282 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1283 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_w");
1284 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1285 test = LLVMBuildFMul(builder, planes, cv_w, "");
1286 sum = LLVMBuildFAdd(builder, sum, test, "");
1287
1288 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, sum);
1289 temp = lp_build_const_int_vec(gallivm, i32_type, 1 << plane_idx);
1290 test = LLVMBuildAnd(builder, test, temp, "");
1291 mask = LLVMBuildOr(builder, mask, test, "");
1292 }
1293 }
1294 }
1295 return mask;
1296 }
1297
1298
1299 /**
1300 * Returns boolean if any clipping has occurred
1301 * Used zero/non-zero i32 value to represent boolean
1302 */
1303 static LLVMValueRef
1304 clipmask_booli32(struct gallivm_state *gallivm,
1305 const struct lp_type vs_type,
1306 LLVMValueRef clipmask_bool_ptr)
1307 {
1308 LLVMBuilderRef builder = gallivm->builder;
1309 LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
1310 LLVMValueRef clipmask_bool = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
1311 LLVMValueRef ret = LLVMConstNull(int32_type);
1312 LLVMValueRef temp;
1313 int i;
1314
1315 /*
1316 * Can do this with log2(vector length) pack instructions and one extract
1317 * (as we don't actually need a or) with sse2 which would be way better.
1318 */
1319 for (i=0; i < vs_type.length; i++) {
1320 temp = LLVMBuildExtractElement(builder, clipmask_bool,
1321 lp_build_const_int32(gallivm, i) , "");
1322 ret = LLVMBuildOr(builder, ret, temp, "");
1323 }
1324 return ret;
1325 }
1326
1327 static LLVMValueRef
1328 draw_gs_llvm_fetch_input(const struct lp_build_tgsi_gs_iface *gs_iface,
1329 struct lp_build_tgsi_context * bld_base,
1330 boolean is_vindex_indirect,
1331 LLVMValueRef vertex_index,
1332 boolean is_aindex_indirect,
1333 LLVMValueRef attrib_index,
1334 LLVMValueRef swizzle_index)
1335 {
1336 const struct draw_gs_llvm_iface *gs = draw_gs_llvm_iface(gs_iface);
1337 struct gallivm_state *gallivm = bld_base->base.gallivm;
1338 LLVMBuilderRef builder = gallivm->builder;
1339 LLVMValueRef indices[3];
1340 LLVMValueRef res;
1341 struct lp_type type = bld_base->base.type;
1342
1343 if (is_vindex_indirect || is_aindex_indirect) {
1344 int i;
1345 res = bld_base->base.zero;
1346 for (i = 0; i < type.length; ++i) {
1347 LLVMValueRef idx = lp_build_const_int32(gallivm, i);
1348 LLVMValueRef vert_chan_index = vertex_index;
1349 LLVMValueRef attr_chan_index = attrib_index;
1350 LLVMValueRef channel_vec, value;
1351
1352 if (is_vindex_indirect) {
1353 vert_chan_index = LLVMBuildExtractElement(builder,
1354 vertex_index, idx, "");
1355 }
1356 if (is_aindex_indirect) {
1357 attr_chan_index = LLVMBuildExtractElement(builder,
1358 attrib_index, idx, "");
1359 }
1360
1361 indices[0] = vert_chan_index;
1362 indices[1] = attr_chan_index;
1363 indices[2] = swizzle_index;
1364
1365 channel_vec = LLVMBuildGEP(builder, gs->input, indices, 3, "");
1366 channel_vec = LLVMBuildLoad(builder, channel_vec, "");
1367 value = LLVMBuildExtractElement(builder, channel_vec, idx, "");
1368
1369 res = LLVMBuildInsertElement(builder, res, value, idx, "");
1370 }
1371 } else {
1372 indices[0] = vertex_index;
1373 indices[1] = attrib_index;
1374 indices[2] = swizzle_index;
1375
1376 res = LLVMBuildGEP(builder, gs->input, indices, 3, "");
1377 res = LLVMBuildLoad(builder, res, "");
1378 }
1379
1380 return res;
1381 }
1382
1383 static void
1384 draw_gs_llvm_emit_vertex(const struct lp_build_tgsi_gs_iface *gs_base,
1385 struct lp_build_tgsi_context * bld_base,
1386 LLVMValueRef (*outputs)[4],
1387 LLVMValueRef emitted_vertices_vec)
1388 {
1389 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1390 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1391 struct gallivm_state *gallivm = variant->gallivm;
1392 LLVMBuilderRef builder = gallivm->builder;
1393 struct lp_type gs_type = bld_base->base.type;
1394 LLVMValueRef clipmask = lp_build_const_int_vec(gallivm,
1395 lp_int_type(gs_type), 0);
1396 LLVMValueRef indices[LP_MAX_VECTOR_LENGTH];
1397 LLVMValueRef next_prim_offset =
1398 lp_build_const_int32(gallivm, variant->shader->base.primitive_boundary);
1399 LLVMValueRef io = variant->io_ptr;
1400 unsigned i;
1401 const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
1402
1403 for (i = 0; i < gs_type.length; ++i) {
1404 LLVMValueRef ind = lp_build_const_int32(gallivm, i);
1405 LLVMValueRef currently_emitted =
1406 LLVMBuildExtractElement(builder, emitted_vertices_vec, ind, "");
1407 indices[i] = LLVMBuildMul(builder, ind, next_prim_offset, "");
1408 indices[i] = LLVMBuildAdd(builder, indices[i], currently_emitted, "");
1409 }
1410
1411 convert_to_aos(gallivm, io, indices,
1412 outputs, clipmask,
1413 gs_info->num_outputs, gs_type,
1414 FALSE);
1415 }
1416
1417 static void
1418 draw_gs_llvm_end_primitive(const struct lp_build_tgsi_gs_iface *gs_base,
1419 struct lp_build_tgsi_context * bld_base,
1420 LLVMValueRef verts_per_prim_vec,
1421 LLVMValueRef emitted_prims_vec)
1422 {
1423 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1424 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1425 struct gallivm_state *gallivm = variant->gallivm;
1426 LLVMBuilderRef builder = gallivm->builder;
1427 LLVMValueRef prim_lengts_ptr =
1428 draw_gs_jit_prim_lengths(variant->gallivm, variant->context_ptr);
1429 unsigned i;
1430
1431 for (i = 0; i < bld_base->base.type.length; ++i) {
1432 LLVMValueRef ind = lp_build_const_int32(gallivm, i);
1433 LLVMValueRef prims_emitted =
1434 LLVMBuildExtractElement(builder, emitted_prims_vec, ind, "");
1435 LLVMValueRef store_ptr;
1436 LLVMValueRef num_vertices =
1437 LLVMBuildExtractElement(builder, verts_per_prim_vec, ind, "");
1438
1439 store_ptr = LLVMBuildGEP(builder, prim_lengts_ptr, &prims_emitted, 1, "");
1440 store_ptr = LLVMBuildLoad(builder, store_ptr, "");
1441 store_ptr = LLVMBuildGEP(builder, store_ptr, &ind, 1, "");
1442 LLVMBuildStore(builder, num_vertices, store_ptr);
1443 }
1444 }
1445
1446 static void
1447 draw_gs_llvm_epilogue(const struct lp_build_tgsi_gs_iface *gs_base,
1448 struct lp_build_tgsi_context * bld_base,
1449 LLVMValueRef total_emitted_vertices_vec,
1450 LLVMValueRef emitted_prims_vec)
1451 {
1452 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1453 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1454 struct gallivm_state *gallivm = variant->gallivm;
1455 LLVMBuilderRef builder = gallivm->builder;
1456 LLVMValueRef emitted_verts_ptr =
1457 draw_gs_jit_emitted_vertices(gallivm, variant->context_ptr);
1458 LLVMValueRef emitted_prims_ptr =
1459 draw_gs_jit_emitted_prims(gallivm, variant->context_ptr);
1460 LLVMValueRef zero = lp_build_const_int32(gallivm, 0);
1461
1462 emitted_verts_ptr = LLVMBuildGEP(builder, emitted_verts_ptr, &zero, 0, "");
1463 emitted_prims_ptr = LLVMBuildGEP(builder, emitted_prims_ptr, &zero, 0, "");
1464
1465 LLVMBuildStore(builder, total_emitted_vertices_vec, emitted_verts_ptr);
1466 LLVMBuildStore(builder, emitted_prims_vec, emitted_prims_ptr);
1467 }
1468
1469 static void
1470 draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant,
1471 boolean elts)
1472 {
1473 struct gallivm_state *gallivm = variant->gallivm;
1474 LLVMContextRef context = gallivm->context;
1475 LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
1476 LLVMTypeRef arg_types[10];
1477 unsigned num_arg_types =
1478 elts ? Elements(arg_types) : Elements(arg_types) - 1;
1479 LLVMTypeRef func_type;
1480 LLVMValueRef context_ptr;
1481 LLVMBasicBlockRef block;
1482 LLVMBuilderRef builder;
1483 char func_name[64];
1484 struct lp_type vs_type;
1485 LLVMValueRef end, start;
1486 LLVMValueRef count, fetch_elts, fetch_elt_max, fetch_count;
1487 LLVMValueRef vertex_id_offset;
1488 LLVMValueRef stride, step, io_itr;
1489 LLVMValueRef io_ptr, vbuffers_ptr, vb_ptr;
1490 LLVMValueRef zero = lp_build_const_int32(gallivm, 0);
1491 LLVMValueRef one = lp_build_const_int32(gallivm, 1);
1492 struct draw_context *draw = llvm->draw;
1493 const struct tgsi_shader_info *vs_info = &draw->vs.vertex_shader->info;
1494 unsigned i, j;
1495 struct lp_build_context bld;
1496 struct lp_build_loop_state lp_loop;
1497 const int vector_length = lp_native_vector_width / 32;
1498 LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
1499 LLVMValueRef fetch_max;
1500 struct lp_build_sampler_soa *sampler = 0;
1501 LLVMValueRef ret, clipmask_bool_ptr;
1502 const struct draw_geometry_shader *gs = draw->gs.geometry_shader;
1503 struct draw_llvm_variant_key *key = &variant->key;
1504 /* If geometry shader is present we need to skip both the viewport
1505 * transformation and clipping otherwise the inputs to the geometry
1506 * shader will be incorrect.
1507 */
1508 const boolean bypass_viewport = gs || key->bypass_viewport;
1509 const boolean enable_cliptest = !gs && (key->clip_xy ||
1510 key->clip_z ||
1511 key->clip_user);
1512 LLVMValueRef variant_func;
1513 const unsigned pos = llvm->draw->vs.position_output;
1514 const unsigned cv = llvm->draw->vs.clipvertex_output;
1515 boolean have_clipdist = FALSE;
1516 struct lp_bld_tgsi_system_values system_values;
1517
1518 memset(&system_values, 0, sizeof(system_values));
1519
1520 util_snprintf(func_name, sizeof(func_name), "draw_llvm_vs_variant%u_%s",
1521 variant->shader->variants_cached, elts ? "elts" : "linear");
1522
1523 i = 0;
1524 arg_types[i++] = get_context_ptr_type(variant); /* context */
1525 arg_types[i++] = get_vertex_header_ptr_type(variant); /* vertex_header */
1526 arg_types[i++] = get_buffer_ptr_type(variant); /* vbuffers */
1527 if (elts) {
1528 arg_types[i++] = LLVMPointerType(int32_type, 0);/* fetch_elts */
1529 arg_types[i++] = int32_type; /* fetch_elt_max */
1530 } else
1531 arg_types[i++] = int32_type; /* start */
1532 arg_types[i++] = int32_type; /* fetch_count / count */
1533 arg_types[i++] = int32_type; /* stride */
1534 arg_types[i++] = get_vb_ptr_type(variant); /* pipe_vertex_buffer's */
1535 arg_types[i++] = int32_type; /* instance_id */
1536 arg_types[i++] = int32_type; /* vertex_id_offset */
1537
1538 func_type = LLVMFunctionType(int32_type, arg_types, num_arg_types, 0);
1539
1540 variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
1541
1542 if (elts)
1543 variant->function_elts = variant_func;
1544 else
1545 variant->function = variant_func;
1546
1547 LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
1548 for (i = 0; i < num_arg_types; ++i)
1549 if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
1550 LLVMAddAttribute(LLVMGetParam(variant_func, i),
1551 LLVMNoAliasAttribute);
1552
1553 context_ptr = LLVMGetParam(variant_func, 0);
1554 io_ptr = LLVMGetParam(variant_func, 1);
1555 vbuffers_ptr = LLVMGetParam(variant_func, 2);
1556 stride = LLVMGetParam(variant_func, 5 + (elts ? 1 : 0));
1557 vb_ptr = LLVMGetParam(variant_func, 6 + (elts ? 1 : 0));
1558 system_values.instance_id = LLVMGetParam(variant_func, 7 + (elts ? 1 : 0));
1559 vertex_id_offset = LLVMGetParam(variant_func, 8 + (elts ? 1 : 0));
1560
1561 lp_build_name(context_ptr, "context");
1562 lp_build_name(io_ptr, "io");
1563 lp_build_name(vbuffers_ptr, "vbuffers");
1564 lp_build_name(stride, "stride");
1565 lp_build_name(vb_ptr, "vb");
1566 lp_build_name(system_values.instance_id, "instance_id");
1567 lp_build_name(vertex_id_offset, "vertex_id_offset");
1568
1569 if (elts) {
1570 fetch_elts = LLVMGetParam(variant_func, 3);
1571 fetch_elt_max = LLVMGetParam(variant_func, 4);
1572 fetch_count = LLVMGetParam(variant_func, 5);
1573 lp_build_name(fetch_elts, "fetch_elts");
1574 lp_build_name(fetch_elt_max, "fetch_elt_max");
1575 lp_build_name(fetch_count, "fetch_count");
1576 start = count = NULL;
1577 }
1578 else {
1579 start = LLVMGetParam(variant_func, 3);
1580 count = LLVMGetParam(variant_func, 4);
1581 lp_build_name(start, "start");
1582 lp_build_name(count, "count");
1583 fetch_elts = fetch_count = NULL;
1584 }
1585
1586 /*
1587 * Function body
1588 */
1589
1590 block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
1591 builder = gallivm->builder;
1592 LLVMPositionBuilderAtEnd(builder, block);
1593
1594 lp_build_context_init(&bld, gallivm, lp_type_int(32));
1595
1596 memset(&vs_type, 0, sizeof vs_type);
1597 vs_type.floating = TRUE; /* floating point values */
1598 vs_type.sign = TRUE; /* values are signed */
1599 vs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
1600 vs_type.width = 32; /* 32-bit float */
1601 vs_type.length = vector_length;
1602
1603 /* hold temporary "bool" clipmask */
1604 clipmask_bool_ptr = lp_build_alloca(gallivm, lp_build_int_vec_type(gallivm, vs_type), "");
1605 LLVMBuildStore(builder, lp_build_zero(gallivm, lp_int_type(vs_type)), clipmask_bool_ptr);
1606
1607 /* code generated texture sampling */
1608 sampler = draw_llvm_sampler_soa_create(
1609 draw_llvm_variant_key_samplers(key),
1610 context_ptr);
1611
1612 if (elts) {
1613 start = zero;
1614 end = fetch_count;
1615 count = fetch_count;
1616 }
1617 else {
1618 end = lp_build_add(&bld, start, count);
1619 }
1620
1621 step = lp_build_const_int32(gallivm, vector_length);
1622
1623 fetch_max = LLVMBuildSub(builder, end, one, "fetch_max");
1624
1625 lp_build_loop_begin(&lp_loop, gallivm, zero);
1626 {
1627 LLVMValueRef inputs[PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS];
1628 LLVMValueRef aos_attribs[PIPE_MAX_SHADER_INPUTS][LP_MAX_VECTOR_WIDTH / 32] = { { 0 } };
1629 LLVMValueRef io;
1630 LLVMValueRef clipmask; /* holds the clipmask value */
1631 const LLVMValueRef (*ptr_aos)[TGSI_NUM_CHANNELS];
1632
1633 io_itr = lp_loop.counter;
1634
1635 io = LLVMBuildGEP(builder, io_ptr, &io_itr, 1, "");
1636 #if DEBUG_STORE
1637 lp_build_printf(gallivm, " --- io %d = %p, loop counter %d\n",
1638 io_itr, io, lp_loop.counter);
1639 #endif
1640 system_values.vertex_id = lp_build_zero(gallivm, lp_type_uint_vec(32, 32*vector_length));
1641 for (i = 0; i < vector_length; ++i) {
1642 LLVMValueRef vert_index =
1643 LLVMBuildAdd(builder,
1644 lp_loop.counter,
1645 lp_build_const_int32(gallivm, i), "");
1646 LLVMValueRef true_index =
1647 LLVMBuildAdd(builder, start, vert_index, "");
1648 LLVMValueRef vertex_id;
1649
1650 /* make sure we're not out of bounds which can happen
1651 * if fetch_count % 4 != 0, because on the last iteration
1652 * a few of the 4 vertex fetches will be out of bounds */
1653 true_index = lp_build_min(&bld, true_index, fetch_max);
1654
1655 if (elts) {
1656 LLVMValueRef fetch_ptr;
1657 LLVMValueRef index_overflowed;
1658 LLVMValueRef index_ptr =
1659 lp_build_alloca(
1660 gallivm,
1661 lp_build_vec_type(gallivm, lp_type_int(32)), "");
1662 struct lp_build_if_state if_ctx;
1663 index_overflowed = LLVMBuildICmp(builder, LLVMIntUGT,
1664 true_index, fetch_elt_max,
1665 "index_overflowed");
1666
1667 lp_build_if(&if_ctx, gallivm, index_overflowed);
1668 {
1669 /* Generate maximum possible index so that
1670 * generate_fetch can treat it just like
1671 * any other overflow and return zeros.
1672 * We don't have to worry about the restart
1673 * primitive index because it has already been
1674 * handled
1675 */
1676 LLVMValueRef val =
1677 lp_build_const_int32(gallivm, 0xffffffff);
1678 LLVMBuildStore(builder, val, index_ptr);
1679 }
1680 lp_build_else(&if_ctx);
1681 {
1682 LLVMValueRef val;
1683 fetch_ptr = LLVMBuildGEP(builder, fetch_elts,
1684 &true_index, 1, "");
1685 val = LLVMBuildLoad(builder, fetch_ptr, "");
1686 LLVMBuildStore(builder, val, index_ptr);
1687 }
1688 lp_build_endif(&if_ctx);
1689 true_index = LLVMBuildLoad(builder, index_ptr, "true_index");
1690 }
1691 /* in the paths with elts vertex id has to be unaffected by the
1692 * index bias and because indices inside our elements array have
1693 * already had index bias applied we need to subtract it here to
1694 * get back to the original index.
1695 * in the linear paths vertex id has to be unaffected by the
1696 * original start index and because we abuse the 'start' variable
1697 * to either represent the actual start index or the index at which
1698 * the primitive was split (we split rendering into chunks of at
1699 * most 4095-vertices) we need to back out the original start
1700 * index out of our vertex id here.
1701 */
1702 vertex_id = LLVMBuildSub(builder, true_index, vertex_id_offset, "");
1703
1704 system_values.vertex_id = LLVMBuildInsertElement(
1705 gallivm->builder,
1706 system_values.vertex_id, vertex_id,
1707 lp_build_const_int32(gallivm, i), "");
1708
1709 for (j = 0; j < draw->pt.nr_vertex_elements; ++j) {
1710 struct pipe_vertex_element *velem = &draw->pt.vertex_element[j];
1711 LLVMValueRef vb_index =
1712 lp_build_const_int32(gallivm, velem->vertex_buffer_index);
1713 LLVMValueRef vb = LLVMBuildGEP(builder, vb_ptr, &vb_index, 1, "");
1714 generate_fetch(gallivm, draw, vbuffers_ptr,
1715 &aos_attribs[j][i], velem, vb, true_index,
1716 system_values.instance_id);
1717 }
1718 }
1719 convert_to_soa(gallivm, aos_attribs, inputs,
1720 draw->pt.nr_vertex_elements, vs_type);
1721
1722 ptr_aos = (const LLVMValueRef (*)[TGSI_NUM_CHANNELS]) inputs;
1723 generate_vs(variant,
1724 builder,
1725 vs_type,
1726 outputs,
1727 ptr_aos,
1728 &system_values,
1729 context_ptr,
1730 sampler,
1731 key->clamp_vertex_color);
1732
1733 if (pos != -1 && cv != -1) {
1734 /* store original positions in clip before further manipulation */
1735 store_clip(gallivm, vs_type, io, outputs, FALSE, key->clip_user ? cv : pos);
1736 store_clip(gallivm, vs_type, io, outputs, TRUE, pos);
1737
1738 /* do cliptest */
1739 if (enable_cliptest) {
1740 LLVMValueRef temp = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
1741 /* allocate clipmask, assign it integer type */
1742 clipmask = generate_clipmask(llvm,
1743 gallivm,
1744 vs_type,
1745 outputs,
1746 key->clip_xy,
1747 key->clip_z,
1748 key->clip_user,
1749 key->clip_halfz,
1750 key->ucp_enable,
1751 context_ptr, &have_clipdist);
1752 temp = LLVMBuildOr(builder, clipmask, temp, "");
1753 /* store temporary clipping boolean value */
1754 LLVMBuildStore(builder, temp, clipmask_bool_ptr);
1755 }
1756 else {
1757 clipmask = lp_build_const_int_vec(gallivm, lp_int_type(vs_type), 0);
1758 }
1759
1760 /* do viewport mapping */
1761 if (!bypass_viewport) {
1762 generate_viewport(variant, builder, vs_type, outputs, context_ptr);
1763 }
1764 }
1765 else {
1766 clipmask = lp_build_const_int_vec(gallivm, lp_int_type(vs_type), 0);
1767 }
1768
1769 /* store clipmask in vertex header,
1770 * original positions in clip
1771 * and transformed positions in data
1772 */
1773 convert_to_aos(gallivm, io, NULL, outputs, clipmask,
1774 vs_info->num_outputs, vs_type,
1775 have_clipdist);
1776 }
1777 lp_build_loop_end_cond(&lp_loop, count, step, LLVMIntUGE);
1778
1779 sampler->destroy(sampler);
1780
1781 /* return clipping boolean value for function */
1782 ret = clipmask_booli32(gallivm, vs_type, clipmask_bool_ptr);
1783
1784 LLVMBuildRet(builder, ret);
1785
1786 gallivm_verify_function(gallivm, variant_func);
1787 }
1788
1789
1790 struct draw_llvm_variant_key *
1791 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
1792 {
1793 unsigned i;
1794 struct draw_llvm_variant_key *key;
1795 struct draw_sampler_static_state *draw_sampler;
1796
1797 key = (struct draw_llvm_variant_key *)store;
1798
1799 key->clamp_vertex_color = llvm->draw->rasterizer->clamp_vertex_color; /**/
1800
1801 /* Presumably all variants of the shader should have the same
1802 * number of vertex elements - ie the number of shader inputs.
1803 * NOTE: we NEED to store the needed number of needed inputs
1804 * here, not the number of provided elements to match keysize
1805 * (and the offset of sampler state in the key).
1806 */
1807 key->nr_vertex_elements = llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_INPUT] + 1;
1808 assert(key->nr_vertex_elements <= llvm->draw->pt.nr_vertex_elements);
1809
1810 /* will have to rig this up properly later */
1811 key->clip_xy = llvm->draw->clip_xy;
1812 key->clip_z = llvm->draw->clip_z;
1813 key->clip_user = llvm->draw->clip_user;
1814 key->bypass_viewport = llvm->draw->identity_viewport;
1815 key->clip_halfz = llvm->draw->rasterizer->clip_halfz;
1816 key->need_edgeflags = (llvm->draw->vs.edgeflag_output ? TRUE : FALSE);
1817 key->ucp_enable = llvm->draw->rasterizer->clip_plane_enable;
1818 key->has_gs = llvm->draw->gs.geometry_shader != NULL;
1819 key->num_outputs = draw_total_vs_outputs(llvm->draw);
1820 key->pad1 = 0;
1821
1822 /* All variants of this shader will have the same value for
1823 * nr_samplers. Not yet trying to compact away holes in the
1824 * sampler array.
1825 */
1826 key->nr_samplers = llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
1827 if (llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
1828 key->nr_sampler_views =
1829 llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
1830 }
1831 else {
1832 key->nr_sampler_views = key->nr_samplers;
1833 }
1834
1835 draw_sampler = draw_llvm_variant_key_samplers(key);
1836
1837 memcpy(key->vertex_element,
1838 llvm->draw->pt.vertex_element,
1839 sizeof(struct pipe_vertex_element) * key->nr_vertex_elements);
1840
1841 memset(draw_sampler, 0, MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
1842
1843 for (i = 0 ; i < key->nr_samplers; i++) {
1844 lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
1845 llvm->draw->samplers[PIPE_SHADER_VERTEX][i]);
1846 }
1847 for (i = 0 ; i < key->nr_sampler_views; i++) {
1848 lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
1849 llvm->draw->sampler_views[PIPE_SHADER_VERTEX][i]);
1850 }
1851
1852 return key;
1853 }
1854
1855
1856 void
1857 draw_llvm_dump_variant_key(struct draw_llvm_variant_key *key)
1858 {
1859 unsigned i;
1860 struct draw_sampler_static_state *sampler = draw_llvm_variant_key_samplers(key);
1861
1862 debug_printf("clamp_vertex_color = %u\n", key->clamp_vertex_color);
1863 debug_printf("clip_xy = %u\n", key->clip_xy);
1864 debug_printf("clip_z = %u\n", key->clip_z);
1865 debug_printf("clip_user = %u\n", key->clip_user);
1866 debug_printf("bypass_viewport = %u\n", key->bypass_viewport);
1867 debug_printf("clip_halfz = %u\n", key->clip_halfz);
1868 debug_printf("need_edgeflags = %u\n", key->need_edgeflags);
1869 debug_printf("has_gs = %u\n", key->has_gs);
1870 debug_printf("ucp_enable = %u\n", key->ucp_enable);
1871
1872 for (i = 0 ; i < key->nr_vertex_elements; i++) {
1873 debug_printf("vertex_element[%i].src_offset = %u\n", i, key->vertex_element[i].src_offset);
1874 debug_printf("vertex_element[%i].instance_divisor = %u\n", i, key->vertex_element[i].instance_divisor);
1875 debug_printf("vertex_element[%i].vertex_buffer_index = %u\n", i, key->vertex_element[i].vertex_buffer_index);
1876 debug_printf("vertex_element[%i].src_format = %s\n", i, util_format_name(key->vertex_element[i].src_format));
1877 }
1878
1879 for (i = 0 ; i < key->nr_sampler_views; i++) {
1880 debug_printf("sampler[%i].src_format = %s\n", i, util_format_name(sampler[i].texture_state.format));
1881 }
1882 }
1883
1884
1885 void
1886 draw_llvm_set_mapped_texture(struct draw_context *draw,
1887 unsigned shader_stage,
1888 unsigned sview_idx,
1889 uint32_t width, uint32_t height, uint32_t depth,
1890 uint32_t first_level, uint32_t last_level,
1891 const void *base_ptr,
1892 uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
1893 uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
1894 uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS])
1895 {
1896 unsigned j;
1897 struct draw_jit_texture *jit_tex;
1898
1899 assert(shader_stage == PIPE_SHADER_VERTEX ||
1900 shader_stage == PIPE_SHADER_GEOMETRY);
1901
1902 if (shader_stage == PIPE_SHADER_VERTEX) {
1903 assert(sview_idx < Elements(draw->llvm->jit_context.textures));
1904
1905 jit_tex = &draw->llvm->jit_context.textures[sview_idx];
1906 } else if (shader_stage == PIPE_SHADER_GEOMETRY) {
1907 assert(sview_idx < Elements(draw->llvm->gs_jit_context.textures));
1908
1909 jit_tex = &draw->llvm->gs_jit_context.textures[sview_idx];
1910 } else {
1911 assert(0);
1912 return;
1913 }
1914
1915 jit_tex->width = width;
1916 jit_tex->height = height;
1917 jit_tex->depth = depth;
1918 jit_tex->first_level = first_level;
1919 jit_tex->last_level = last_level;
1920 jit_tex->base = base_ptr;
1921
1922 for (j = first_level; j <= last_level; j++) {
1923 jit_tex->mip_offsets[j] = mip_offsets[j];
1924 jit_tex->row_stride[j] = row_stride[j];
1925 jit_tex->img_stride[j] = img_stride[j];
1926 }
1927 }
1928
1929
1930 void
1931 draw_llvm_set_sampler_state(struct draw_context *draw,
1932 unsigned shader_type)
1933 {
1934 unsigned i;
1935
1936 if (shader_type == PIPE_SHADER_VERTEX) {
1937 for (i = 0; i < draw->num_samplers[PIPE_SHADER_VERTEX]; i++) {
1938 struct draw_jit_sampler *jit_sam = &draw->llvm->jit_context.samplers[i];
1939
1940 if (draw->samplers[i]) {
1941 const struct pipe_sampler_state *s
1942 = draw->samplers[PIPE_SHADER_VERTEX][i];
1943 jit_sam->min_lod = s->min_lod;
1944 jit_sam->max_lod = s->max_lod;
1945 jit_sam->lod_bias = s->lod_bias;
1946 COPY_4V(jit_sam->border_color, s->border_color.f);
1947 }
1948 }
1949 } else if (shader_type == PIPE_SHADER_GEOMETRY) {
1950 for (i = 0; i < draw->num_samplers[PIPE_SHADER_GEOMETRY]; i++) {
1951 struct draw_jit_sampler *jit_sam = &draw->llvm->gs_jit_context.samplers[i];
1952
1953 if (draw->samplers[i]) {
1954 const struct pipe_sampler_state *s
1955 = draw->samplers[PIPE_SHADER_GEOMETRY][i];
1956 jit_sam->min_lod = s->min_lod;
1957 jit_sam->max_lod = s->max_lod;
1958 jit_sam->lod_bias = s->lod_bias;
1959 COPY_4V(jit_sam->border_color, s->border_color.f);
1960 }
1961 }
1962 }
1963 }
1964
1965
1966 void
1967 draw_llvm_destroy_variant(struct draw_llvm_variant *variant)
1968 {
1969 struct draw_llvm *llvm = variant->llvm;
1970
1971 gallivm_destroy(variant->gallivm);
1972
1973 remove_from_list(&variant->list_item_local);
1974 variant->shader->variants_cached--;
1975 remove_from_list(&variant->list_item_global);
1976 llvm->nr_variants--;
1977 FREE(variant);
1978 }
1979
1980
1981 /**
1982 * Create LLVM types for various structures.
1983 */
1984 static void
1985 create_gs_jit_types(struct draw_gs_llvm_variant *var)
1986 {
1987 struct gallivm_state *gallivm = var->gallivm;
1988 LLVMTypeRef texture_type, sampler_type, context_type;
1989
1990 texture_type = create_jit_texture_type(gallivm, "texture");
1991 sampler_type = create_jit_sampler_type(gallivm, "sampler");
1992
1993 context_type = create_gs_jit_context_type(gallivm,
1994 var->shader->base.vector_length,
1995 texture_type, sampler_type,
1996 "draw_gs_jit_context");
1997 var->context_ptr_type = LLVMPointerType(context_type, 0);
1998
1999 var->input_array_type = create_gs_jit_input_type(gallivm);
2000 }
2001
2002 static LLVMTypeRef
2003 get_gs_context_ptr_type(struct draw_gs_llvm_variant *variant)
2004 {
2005 if (!variant->context_ptr_type)
2006 create_gs_jit_types(variant);
2007 return variant->context_ptr_type;
2008 }
2009
2010 static LLVMValueRef
2011 generate_mask_value(struct draw_gs_llvm_variant *variant,
2012 struct lp_type gs_type)
2013 {
2014 struct gallivm_state *gallivm = variant->gallivm;
2015 LLVMBuilderRef builder = gallivm->builder;
2016 struct lp_type mask_type = lp_int_type(gs_type);
2017 LLVMValueRef num_prims;
2018 LLVMValueRef mask_val = lp_build_const_vec(gallivm, mask_type, 0);
2019 unsigned i;
2020
2021 num_prims = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, mask_type),
2022 variant->num_prims);
2023 for (i = 0; i <= gs_type.length; i++) {
2024 LLVMValueRef idx = lp_build_const_int32(gallivm, i);
2025 mask_val = LLVMBuildInsertElement(builder, mask_val, idx, idx, "");
2026 }
2027 mask_val = lp_build_compare(gallivm, mask_type,
2028 PIPE_FUNC_GREATER, num_prims, mask_val);
2029
2030 return mask_val;
2031 }
2032
2033 static void
2034 draw_gs_llvm_generate(struct draw_llvm *llvm,
2035 struct draw_gs_llvm_variant *variant)
2036 {
2037 struct gallivm_state *gallivm = variant->gallivm;
2038 LLVMContextRef context = gallivm->context;
2039 LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
2040 LLVMTypeRef arg_types[6];
2041 LLVMTypeRef func_type;
2042 LLVMValueRef variant_func;
2043 LLVMValueRef context_ptr;
2044 LLVMValueRef prim_id_ptr;
2045 LLVMBasicBlockRef block;
2046 LLVMBuilderRef builder;
2047 LLVMValueRef io_ptr, input_array, num_prims, mask_val;
2048 struct lp_build_sampler_soa *sampler = 0;
2049 struct lp_build_context bld;
2050 struct lp_bld_tgsi_system_values system_values;
2051 char func_name[64];
2052 struct lp_type gs_type;
2053 unsigned i;
2054 struct draw_gs_llvm_iface gs_iface;
2055 const struct tgsi_token *tokens = variant->shader->base.state.tokens;
2056 LLVMValueRef consts_ptr, num_consts_ptr;
2057 LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
2058 struct lp_build_mask_context mask;
2059 const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
2060 unsigned vector_length = variant->shader->base.vector_length;
2061
2062 memset(&system_values, 0, sizeof(system_values));
2063
2064 util_snprintf(func_name, sizeof(func_name), "draw_llvm_gs_variant%u",
2065 variant->shader->variants_cached);
2066
2067 assert(variant->vertex_header_ptr_type);
2068
2069 arg_types[0] = get_gs_context_ptr_type(variant); /* context */
2070 arg_types[1] = variant->input_array_type; /* input */
2071 arg_types[2] = variant->vertex_header_ptr_type; /* vertex_header */
2072 arg_types[3] = int32_type; /* num_prims */
2073 arg_types[4] = int32_type; /* instance_id */
2074 arg_types[5] = LLVMPointerType(
2075 LLVMVectorType(int32_type, vector_length), 0); /* prim_id_ptr */
2076
2077 func_type = LLVMFunctionType(int32_type, arg_types, Elements(arg_types), 0);
2078
2079 variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
2080
2081 variant->function = variant_func;
2082
2083 LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
2084
2085 for (i = 0; i < Elements(arg_types); ++i)
2086 if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
2087 LLVMAddAttribute(LLVMGetParam(variant_func, i),
2088 LLVMNoAliasAttribute);
2089
2090 context_ptr = LLVMGetParam(variant_func, 0);
2091 input_array = LLVMGetParam(variant_func, 1);
2092 io_ptr = LLVMGetParam(variant_func, 2);
2093 num_prims = LLVMGetParam(variant_func, 3);
2094 system_values.instance_id = LLVMGetParam(variant_func, 4);
2095 prim_id_ptr = LLVMGetParam(variant_func, 5);
2096
2097 lp_build_name(context_ptr, "context");
2098 lp_build_name(input_array, "input");
2099 lp_build_name(io_ptr, "io");
2100 lp_build_name(num_prims, "num_prims");
2101 lp_build_name(system_values.instance_id, "instance_id");
2102 lp_build_name(prim_id_ptr, "prim_id_ptr");
2103
2104 variant->context_ptr = context_ptr;
2105 variant->io_ptr = io_ptr;
2106 variant->num_prims = num_prims;
2107
2108 gs_iface.base.fetch_input = draw_gs_llvm_fetch_input;
2109 gs_iface.base.emit_vertex = draw_gs_llvm_emit_vertex;
2110 gs_iface.base.end_primitive = draw_gs_llvm_end_primitive;
2111 gs_iface.base.gs_epilogue = draw_gs_llvm_epilogue;
2112 gs_iface.input = input_array;
2113 gs_iface.variant = variant;
2114
2115 /*
2116 * Function body
2117 */
2118
2119 block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
2120 builder = gallivm->builder;
2121 LLVMPositionBuilderAtEnd(builder, block);
2122
2123 lp_build_context_init(&bld, gallivm, lp_type_int(32));
2124
2125 memset(&gs_type, 0, sizeof gs_type);
2126 gs_type.floating = TRUE; /* floating point values */
2127 gs_type.sign = TRUE; /* values are signed */
2128 gs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
2129 gs_type.width = 32; /* 32-bit float */
2130 gs_type.length = vector_length;
2131
2132 consts_ptr = draw_gs_jit_context_constants(variant->gallivm, context_ptr);
2133 num_consts_ptr =
2134 draw_gs_jit_context_num_constants(variant->gallivm, context_ptr);
2135
2136 /* code generated texture sampling */
2137 sampler = draw_llvm_sampler_soa_create(variant->key.samplers,
2138 context_ptr);
2139
2140 mask_val = generate_mask_value(variant, gs_type);
2141 lp_build_mask_begin(&mask, gallivm, gs_type, mask_val);
2142
2143 if (gs_info->uses_primid) {
2144 system_values.prim_id = LLVMBuildLoad(builder, prim_id_ptr, "prim_id");
2145 }
2146
2147 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
2148 tgsi_dump(tokens, 0);
2149 draw_gs_llvm_dump_variant_key(&variant->key);
2150 }
2151
2152 lp_build_tgsi_soa(variant->gallivm,
2153 tokens,
2154 gs_type,
2155 &mask,
2156 consts_ptr,
2157 num_consts_ptr,
2158 &system_values,
2159 NULL,
2160 outputs,
2161 sampler,
2162 &llvm->draw->gs.geometry_shader->info,
2163 (const struct lp_build_tgsi_gs_iface *)&gs_iface);
2164
2165 sampler->destroy(sampler);
2166
2167 lp_build_mask_end(&mask);
2168
2169 LLVMBuildRet(builder, lp_build_zero(gallivm, lp_type_uint(32)));
2170
2171 gallivm_verify_function(gallivm, variant_func);
2172 }
2173
2174
2175 struct draw_gs_llvm_variant *
2176 draw_gs_llvm_create_variant(struct draw_llvm *llvm,
2177 unsigned num_outputs,
2178 const struct draw_gs_llvm_variant_key *key)
2179 {
2180 struct draw_gs_llvm_variant *variant;
2181 struct llvm_geometry_shader *shader =
2182 llvm_geometry_shader(llvm->draw->gs.geometry_shader);
2183 LLVMTypeRef vertex_header;
2184 char module_name[64];
2185
2186 variant = MALLOC(sizeof *variant +
2187 shader->variant_key_size -
2188 sizeof variant->key);
2189 if (variant == NULL)
2190 return NULL;
2191
2192 variant->llvm = llvm;
2193 variant->shader = shader;
2194
2195 util_snprintf(module_name, sizeof(module_name), "draw_llvm_gs_variant%u",
2196 variant->shader->variants_cached);
2197
2198 variant->gallivm = gallivm_create(module_name);
2199
2200 create_gs_jit_types(variant);
2201
2202 memcpy(&variant->key, key, shader->variant_key_size);
2203
2204 vertex_header = create_jit_vertex_header(variant->gallivm, num_outputs);
2205
2206 variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
2207
2208 draw_gs_llvm_generate(llvm, variant);
2209
2210 gallivm_compile_module(variant->gallivm);
2211
2212 variant->jit_func = (draw_gs_jit_func)
2213 gallivm_jit_function(variant->gallivm, variant->function);
2214
2215 gallivm_free_ir(variant->gallivm);
2216
2217 variant->list_item_global.base = variant;
2218 variant->list_item_local.base = variant;
2219 /*variant->no = */shader->variants_created++;
2220 variant->list_item_global.base = variant;
2221
2222 return variant;
2223 }
2224
2225 void
2226 draw_gs_llvm_destroy_variant(struct draw_gs_llvm_variant *variant)
2227 {
2228 struct draw_llvm *llvm = variant->llvm;
2229
2230 gallivm_destroy(variant->gallivm);
2231
2232 remove_from_list(&variant->list_item_local);
2233 variant->shader->variants_cached--;
2234 remove_from_list(&variant->list_item_global);
2235 llvm->nr_gs_variants--;
2236 FREE(variant);
2237 }
2238
2239 struct draw_gs_llvm_variant_key *
2240 draw_gs_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
2241 {
2242 unsigned i;
2243 struct draw_gs_llvm_variant_key *key;
2244 struct draw_sampler_static_state *draw_sampler;
2245
2246 key = (struct draw_gs_llvm_variant_key *)store;
2247
2248 key->num_outputs = draw_total_gs_outputs(llvm->draw);
2249
2250 /* All variants of this shader will have the same value for
2251 * nr_samplers. Not yet trying to compact away holes in the
2252 * sampler array.
2253 */
2254 key->nr_samplers = llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
2255 if (llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
2256 key->nr_sampler_views =
2257 llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
2258 }
2259 else {
2260 key->nr_sampler_views = key->nr_samplers;
2261 }
2262
2263 draw_sampler = key->samplers;
2264
2265 memset(draw_sampler, 0, MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
2266
2267 for (i = 0 ; i < key->nr_samplers; i++) {
2268 lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
2269 llvm->draw->samplers[PIPE_SHADER_GEOMETRY][i]);
2270 }
2271 for (i = 0 ; i < key->nr_sampler_views; i++) {
2272 lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
2273 llvm->draw->sampler_views[PIPE_SHADER_GEOMETRY][i]);
2274 }
2275
2276 return key;
2277 }
2278
2279 void
2280 draw_gs_llvm_dump_variant_key(struct draw_gs_llvm_variant_key *key)
2281 {
2282 unsigned i;
2283 struct draw_sampler_static_state *sampler = key->samplers;
2284
2285 for (i = 0 ; i < key->nr_sampler_views; i++) {
2286 debug_printf("sampler[%i].src_format = %s\n", i,
2287 util_format_name(sampler[i].texture_state.format));
2288 }
2289 }