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_bitarit.h"
37 #include "gallivm/lp_bld_gather.h"
38 #include "gallivm/lp_bld_logic.h"
39 #include "gallivm/lp_bld_const.h"
40 #include "gallivm/lp_bld_swizzle.h"
41 #include "gallivm/lp_bld_struct.h"
42 #include "gallivm/lp_bld_type.h"
43 #include "gallivm/lp_bld_flow.h"
44 #include "gallivm/lp_bld_debug.h"
45 #include "gallivm/lp_bld_tgsi.h"
46 #include "gallivm/lp_bld_printf.h"
47 #include "gallivm/lp_bld_intr.h"
48 #include "gallivm/lp_bld_init.h"
49 #include "gallivm/lp_bld_type.h"
50 #include "gallivm/lp_bld_pack.h"
51 #include "gallivm/lp_bld_format.h"
52
53 #include "tgsi/tgsi_exec.h"
54 #include "tgsi/tgsi_dump.h"
55
56 #include "util/u_math.h"
57 #include "util/u_pointer.h"
58 #include "util/u_string.h"
59 #include "util/simple_list.h"
60
61
62 #define DEBUG_STORE 0
63
64
65 static void
66 draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *var);
67
68
69 struct draw_gs_llvm_iface {
70 struct lp_build_tgsi_gs_iface base;
71
72 struct draw_gs_llvm_variant *variant;
73 LLVMValueRef input;
74 };
75
76 static inline const struct draw_gs_llvm_iface *
draw_gs_llvm_iface(const struct lp_build_tgsi_gs_iface * iface)77 draw_gs_llvm_iface(const struct lp_build_tgsi_gs_iface *iface)
78 {
79 return (const struct draw_gs_llvm_iface *)iface;
80 }
81
82 /**
83 * Create LLVM type for draw_vertex_buffer.
84 */
85 static LLVMTypeRef
create_jit_dvbuffer_type(struct gallivm_state * gallivm,const char * struct_name)86 create_jit_dvbuffer_type(struct gallivm_state *gallivm,
87 const char *struct_name)
88 {
89 LLVMTargetDataRef target = gallivm->target;
90 LLVMTypeRef dvbuffer_type;
91 LLVMTypeRef elem_types[DRAW_JIT_DVBUFFER_NUM_FIELDS];
92 LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
93
94 elem_types[DRAW_JIT_DVBUFFER_MAP] =
95 LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 8), 0);
96 elem_types[DRAW_JIT_DVBUFFER_SIZE] = int32_type;
97
98 dvbuffer_type = LLVMStructTypeInContext(gallivm->context, elem_types,
99 ARRAY_SIZE(elem_types), 0);
100
101 (void) target; /* silence unused var warning for non-debug build */
102 LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, map,
103 target, dvbuffer_type,
104 DRAW_JIT_DVBUFFER_MAP);
105 LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, size,
106 target, dvbuffer_type,
107 DRAW_JIT_DVBUFFER_SIZE);
108
109 return dvbuffer_type;
110 }
111
112 /**
113 * Create LLVM type for struct draw_jit_texture
114 */
115 static LLVMTypeRef
create_jit_texture_type(struct gallivm_state * gallivm,const char * struct_name)116 create_jit_texture_type(struct gallivm_state *gallivm, const char *struct_name)
117 {
118 LLVMTargetDataRef target = gallivm->target;
119 LLVMTypeRef texture_type;
120 LLVMTypeRef elem_types[DRAW_JIT_TEXTURE_NUM_FIELDS];
121 LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
122
123 elem_types[DRAW_JIT_TEXTURE_WIDTH] =
124 elem_types[DRAW_JIT_TEXTURE_HEIGHT] =
125 elem_types[DRAW_JIT_TEXTURE_DEPTH] =
126 elem_types[DRAW_JIT_TEXTURE_FIRST_LEVEL] =
127 elem_types[DRAW_JIT_TEXTURE_LAST_LEVEL] = int32_type;
128 elem_types[DRAW_JIT_TEXTURE_BASE] =
129 LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
130 elem_types[DRAW_JIT_TEXTURE_ROW_STRIDE] =
131 elem_types[DRAW_JIT_TEXTURE_IMG_STRIDE] =
132 elem_types[DRAW_JIT_TEXTURE_MIP_OFFSETS] =
133 LLVMArrayType(int32_type, PIPE_MAX_TEXTURE_LEVELS);
134
135 texture_type = LLVMStructTypeInContext(gallivm->context, elem_types,
136 ARRAY_SIZE(elem_types), 0);
137
138 (void) target; /* silence unused var warning for non-debug build */
139 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, width,
140 target, texture_type,
141 DRAW_JIT_TEXTURE_WIDTH);
142 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, height,
143 target, texture_type,
144 DRAW_JIT_TEXTURE_HEIGHT);
145 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, depth,
146 target, texture_type,
147 DRAW_JIT_TEXTURE_DEPTH);
148 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, first_level,
149 target, texture_type,
150 DRAW_JIT_TEXTURE_FIRST_LEVEL);
151 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, last_level,
152 target, texture_type,
153 DRAW_JIT_TEXTURE_LAST_LEVEL);
154 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, base,
155 target, texture_type,
156 DRAW_JIT_TEXTURE_BASE);
157 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, row_stride,
158 target, texture_type,
159 DRAW_JIT_TEXTURE_ROW_STRIDE);
160 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, img_stride,
161 target, texture_type,
162 DRAW_JIT_TEXTURE_IMG_STRIDE);
163 LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, mip_offsets,
164 target, texture_type,
165 DRAW_JIT_TEXTURE_MIP_OFFSETS);
166
167 LP_CHECK_STRUCT_SIZE(struct draw_jit_texture, target, texture_type);
168
169 return texture_type;
170 }
171
172
173 /**
174 * Create LLVM type for struct draw_jit_sampler
175 */
176 static LLVMTypeRef
create_jit_sampler_type(struct gallivm_state * gallivm,const char * struct_name)177 create_jit_sampler_type(struct gallivm_state *gallivm, const char *struct_name)
178 {
179 LLVMTargetDataRef target = gallivm->target;
180 LLVMTypeRef sampler_type;
181 LLVMTypeRef elem_types[DRAW_JIT_SAMPLER_NUM_FIELDS];
182
183 elem_types[DRAW_JIT_SAMPLER_MIN_LOD] =
184 elem_types[DRAW_JIT_SAMPLER_MAX_LOD] =
185 elem_types[DRAW_JIT_SAMPLER_LOD_BIAS] = LLVMFloatTypeInContext(gallivm->context);
186 elem_types[DRAW_JIT_SAMPLER_BORDER_COLOR] =
187 LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
188
189 sampler_type = LLVMStructTypeInContext(gallivm->context, elem_types,
190 ARRAY_SIZE(elem_types), 0);
191
192 (void) target; /* silence unused var warning for non-debug build */
193 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, min_lod,
194 target, sampler_type,
195 DRAW_JIT_SAMPLER_MIN_LOD);
196 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, max_lod,
197 target, sampler_type,
198 DRAW_JIT_SAMPLER_MAX_LOD);
199 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, lod_bias,
200 target, sampler_type,
201 DRAW_JIT_SAMPLER_LOD_BIAS);
202 LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, border_color,
203 target, sampler_type,
204 DRAW_JIT_SAMPLER_BORDER_COLOR);
205
206 LP_CHECK_STRUCT_SIZE(struct draw_jit_sampler, target, sampler_type);
207
208 return sampler_type;
209 }
210
211
212 /**
213 * Create LLVM type for struct draw_jit_context
214 */
215 static LLVMTypeRef
create_jit_context_type(struct gallivm_state * gallivm,LLVMTypeRef texture_type,LLVMTypeRef sampler_type,const char * struct_name)216 create_jit_context_type(struct gallivm_state *gallivm,
217 LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
218 const char *struct_name)
219 {
220 LLVMTargetDataRef target = gallivm->target;
221 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
222 LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
223 LLVMTypeRef elem_types[DRAW_JIT_CTX_NUM_FIELDS];
224 LLVMTypeRef context_type;
225
226 elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* vs_constants */
227 LP_MAX_TGSI_CONST_BUFFERS);
228 elem_types[1] = LLVMArrayType(int_type, /* num_vs_constants */
229 LP_MAX_TGSI_CONST_BUFFERS);
230 elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
231 DRAW_TOTAL_CLIP_PLANES), 0);
232 elem_types[3] = LLVMPointerType(float_type, 0); /* viewports */
233 elem_types[4] = LLVMArrayType(texture_type,
234 PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
235 elem_types[5] = LLVMArrayType(sampler_type,
236 PIPE_MAX_SAMPLERS); /* samplers */
237 context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
238 ARRAY_SIZE(elem_types), 0);
239
240 (void) target; /* silence unused var warning for non-debug build */
241 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, vs_constants,
242 target, context_type, DRAW_JIT_CTX_CONSTANTS);
243 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, num_vs_constants,
244 target, context_type, DRAW_JIT_CTX_NUM_CONSTANTS);
245 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, planes,
246 target, context_type, DRAW_JIT_CTX_PLANES);
247 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, viewports,
248 target, context_type, DRAW_JIT_CTX_VIEWPORT);
249 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, textures,
250 target, context_type,
251 DRAW_JIT_CTX_TEXTURES);
252 LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, samplers,
253 target, context_type,
254 DRAW_JIT_CTX_SAMPLERS);
255 LP_CHECK_STRUCT_SIZE(struct draw_jit_context,
256 target, context_type);
257
258 return context_type;
259 }
260
261
262 /**
263 * Create LLVM type for struct draw_gs_jit_context
264 */
265 static LLVMTypeRef
create_gs_jit_context_type(struct gallivm_state * gallivm,unsigned vector_length,LLVMTypeRef texture_type,LLVMTypeRef sampler_type,const char * struct_name)266 create_gs_jit_context_type(struct gallivm_state *gallivm,
267 unsigned vector_length,
268 LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
269 const char *struct_name)
270 {
271 LLVMTargetDataRef target = gallivm->target;
272 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
273 LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
274 LLVMTypeRef elem_types[DRAW_GS_JIT_CTX_NUM_FIELDS];
275 LLVMTypeRef context_type;
276
277 elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* constants */
278 LP_MAX_TGSI_CONST_BUFFERS);
279 elem_types[1] = LLVMArrayType(int_type, /* num_constants */
280 LP_MAX_TGSI_CONST_BUFFERS);
281 elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
282 DRAW_TOTAL_CLIP_PLANES), 0);
283 elem_types[3] = LLVMPointerType(float_type, 0); /* viewports */
284
285 elem_types[4] = LLVMArrayType(texture_type,
286 PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
287 elem_types[5] = LLVMArrayType(sampler_type,
288 PIPE_MAX_SAMPLERS); /* samplers */
289
290 elem_types[6] = LLVMPointerType(LLVMPointerType(int_type, 0), 0);
291 elem_types[7] = LLVMPointerType(LLVMVectorType(int_type,
292 vector_length), 0);
293 elem_types[8] = LLVMPointerType(LLVMVectorType(int_type,
294 vector_length), 0);
295
296 context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
297 ARRAY_SIZE(elem_types), 0);
298
299 (void) target; /* silence unused var warning for non-debug build */
300 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, constants,
301 target, context_type, DRAW_GS_JIT_CTX_CONSTANTS);
302 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, num_constants,
303 target, context_type, DRAW_GS_JIT_CTX_NUM_CONSTANTS);
304 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, planes,
305 target, context_type, DRAW_GS_JIT_CTX_PLANES);
306 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, viewports,
307 target, context_type, DRAW_GS_JIT_CTX_VIEWPORT);
308 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, textures,
309 target, context_type,
310 DRAW_GS_JIT_CTX_TEXTURES);
311 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, samplers,
312 target, context_type,
313 DRAW_GS_JIT_CTX_SAMPLERS);
314 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, prim_lengths,
315 target, context_type,
316 DRAW_GS_JIT_CTX_PRIM_LENGTHS);
317 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_vertices,
318 target, context_type,
319 DRAW_GS_JIT_CTX_EMITTED_VERTICES);
320 LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_prims,
321 target, context_type,
322 DRAW_GS_JIT_CTX_EMITTED_PRIMS);
323 LP_CHECK_STRUCT_SIZE(struct draw_gs_jit_context,
324 target, context_type);
325
326 return context_type;
327 }
328
329
330 static LLVMTypeRef
create_gs_jit_input_type(struct gallivm_state * gallivm)331 create_gs_jit_input_type(struct gallivm_state *gallivm)
332 {
333 LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
334 LLVMTypeRef input_array;
335
336 input_array = LLVMVectorType(float_type, TGSI_NUM_CHANNELS); /* num primitives */
337 input_array = LLVMArrayType(input_array, TGSI_NUM_CHANNELS); /* num channels */
338 input_array = LLVMArrayType(input_array, PIPE_MAX_SHADER_INPUTS); /* num attrs per vertex */
339 input_array = LLVMPointerType(input_array, 0); /* num vertices per prim */
340
341 return input_array;
342 }
343
344 /**
345 * Create LLVM type for struct pipe_vertex_buffer
346 */
347 static LLVMTypeRef
create_jit_vertex_buffer_type(struct gallivm_state * gallivm,const char * struct_name)348 create_jit_vertex_buffer_type(struct gallivm_state *gallivm,
349 const char *struct_name)
350 {
351 LLVMTargetDataRef target = gallivm->target;
352 LLVMTypeRef elem_types[4];
353 LLVMTypeRef vb_type;
354
355 elem_types[0] = LLVMInt16TypeInContext(gallivm->context);
356 elem_types[1] = LLVMInt8TypeInContext(gallivm->context);
357 elem_types[2] = LLVMInt32TypeInContext(gallivm->context);
358 elem_types[3] = LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
359
360 vb_type = LLVMStructTypeInContext(gallivm->context, elem_types,
361 ARRAY_SIZE(elem_types), 0);
362
363 (void) target; /* silence unused var warning for non-debug build */
364 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, stride,
365 target, vb_type, 0);
366 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, is_user_buffer,
367 target, vb_type, 1);
368 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, buffer_offset,
369 target, vb_type, 2);
370 LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, buffer.resource,
371 target, vb_type, 3);
372
373 LP_CHECK_STRUCT_SIZE(struct pipe_vertex_buffer, target, vb_type);
374
375 return vb_type;
376 }
377
378
379 /**
380 * Create LLVM type for struct vertex_header;
381 */
382 static LLVMTypeRef
create_jit_vertex_header(struct gallivm_state * gallivm,int data_elems)383 create_jit_vertex_header(struct gallivm_state *gallivm, int data_elems)
384 {
385 LLVMTargetDataRef target = gallivm->target;
386 LLVMTypeRef elem_types[3];
387 LLVMTypeRef vertex_header;
388 char struct_name[24];
389
390 util_snprintf(struct_name, 23, "vertex_header%d", data_elems);
391
392 elem_types[DRAW_JIT_VERTEX_VERTEX_ID] = LLVMIntTypeInContext(gallivm->context, 32);
393 elem_types[DRAW_JIT_VERTEX_CLIP_POS] = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
394 elem_types[DRAW_JIT_VERTEX_DATA] = LLVMArrayType(elem_types[1], data_elems);
395
396 vertex_header = LLVMStructTypeInContext(gallivm->context, elem_types,
397 ARRAY_SIZE(elem_types), 0);
398
399 /* these are bit-fields and we can't take address of them
400 LP_CHECK_MEMBER_OFFSET(struct vertex_header, clipmask,
401 target, vertex_header,
402 DRAW_JIT_VERTEX_CLIPMASK);
403 LP_CHECK_MEMBER_OFFSET(struct vertex_header, edgeflag,
404 target, vertex_header,
405 DRAW_JIT_VERTEX_EDGEFLAG);
406 LP_CHECK_MEMBER_OFFSET(struct vertex_header, pad,
407 target, vertex_header,
408 DRAW_JIT_VERTEX_PAD);
409 LP_CHECK_MEMBER_OFFSET(struct vertex_header, vertex_id,
410 target, vertex_header,
411 DRAW_JIT_VERTEX_VERTEX_ID);
412 */
413 (void) target; /* silence unused var warning for non-debug build */
414 LP_CHECK_MEMBER_OFFSET(struct vertex_header, clip_pos,
415 target, vertex_header,
416 DRAW_JIT_VERTEX_CLIP_POS);
417 LP_CHECK_MEMBER_OFFSET(struct vertex_header, data,
418 target, vertex_header,
419 DRAW_JIT_VERTEX_DATA);
420
421 assert(LLVMABISizeOfType(target, vertex_header) ==
422 offsetof(struct vertex_header, data[data_elems]));
423
424 return vertex_header;
425 }
426
427
428 /**
429 * Create LLVM types for various structures.
430 */
431 static void
create_jit_types(struct draw_llvm_variant * variant)432 create_jit_types(struct draw_llvm_variant *variant)
433 {
434 struct gallivm_state *gallivm = variant->gallivm;
435 LLVMTypeRef texture_type, sampler_type, context_type, buffer_type,
436 vb_type;
437
438 texture_type = create_jit_texture_type(gallivm, "texture");
439 sampler_type = create_jit_sampler_type(gallivm, "sampler");
440
441 context_type = create_jit_context_type(gallivm, texture_type, sampler_type,
442 "draw_jit_context");
443 variant->context_ptr_type = LLVMPointerType(context_type, 0);
444
445 buffer_type = create_jit_dvbuffer_type(gallivm, "draw_vertex_buffer");
446 variant->buffer_ptr_type = LLVMPointerType(buffer_type, 0);
447
448 vb_type = create_jit_vertex_buffer_type(gallivm, "pipe_vertex_buffer");
449 variant->vb_ptr_type = LLVMPointerType(vb_type, 0);
450 }
451
452
453 static LLVMTypeRef
get_context_ptr_type(struct draw_llvm_variant * variant)454 get_context_ptr_type(struct draw_llvm_variant *variant)
455 {
456 if (!variant->context_ptr_type)
457 create_jit_types(variant);
458 return variant->context_ptr_type;
459 }
460
461
462 static LLVMTypeRef
get_buffer_ptr_type(struct draw_llvm_variant * variant)463 get_buffer_ptr_type(struct draw_llvm_variant *variant)
464 {
465 if (!variant->buffer_ptr_type)
466 create_jit_types(variant);
467 return variant->buffer_ptr_type;
468 }
469
470
471 static LLVMTypeRef
get_vb_ptr_type(struct draw_llvm_variant * variant)472 get_vb_ptr_type(struct draw_llvm_variant *variant)
473 {
474 if (!variant->vb_ptr_type)
475 create_jit_types(variant);
476 return variant->vb_ptr_type;
477 }
478
479 static LLVMTypeRef
get_vertex_header_ptr_type(struct draw_llvm_variant * variant)480 get_vertex_header_ptr_type(struct draw_llvm_variant *variant)
481 {
482 if (!variant->vertex_header_ptr_type)
483 create_jit_types(variant);
484 return variant->vertex_header_ptr_type;
485 }
486
487
488 /**
489 * Create per-context LLVM info.
490 */
491 struct draw_llvm *
draw_llvm_create(struct draw_context * draw,LLVMContextRef context)492 draw_llvm_create(struct draw_context *draw, LLVMContextRef context)
493 {
494 struct draw_llvm *llvm;
495
496 if (!lp_build_init())
497 return NULL;
498
499 llvm = CALLOC_STRUCT( draw_llvm );
500 if (!llvm)
501 return NULL;
502
503 llvm->draw = draw;
504
505 llvm->context = context;
506 if (!llvm->context) {
507 llvm->context = LLVMContextCreate();
508 llvm->context_owned = true;
509 }
510 if (!llvm->context)
511 goto fail;
512
513 llvm->nr_variants = 0;
514 make_empty_list(&llvm->vs_variants_list);
515
516 llvm->nr_gs_variants = 0;
517 make_empty_list(&llvm->gs_variants_list);
518
519 return llvm;
520
521 fail:
522 draw_llvm_destroy(llvm);
523 return NULL;
524 }
525
526
527 /**
528 * Free per-context LLVM info.
529 */
530 void
draw_llvm_destroy(struct draw_llvm * llvm)531 draw_llvm_destroy(struct draw_llvm *llvm)
532 {
533 if (llvm->context_owned)
534 LLVMContextDispose(llvm->context);
535 llvm->context = NULL;
536
537 /* XXX free other draw_llvm data? */
538 FREE(llvm);
539 }
540
541
542 /**
543 * Create LLVM-generated code for a vertex shader.
544 */
545 struct draw_llvm_variant *
draw_llvm_create_variant(struct draw_llvm * llvm,unsigned num_inputs,const struct draw_llvm_variant_key * key)546 draw_llvm_create_variant(struct draw_llvm *llvm,
547 unsigned num_inputs,
548 const struct draw_llvm_variant_key *key)
549 {
550 struct draw_llvm_variant *variant;
551 struct llvm_vertex_shader *shader =
552 llvm_vertex_shader(llvm->draw->vs.vertex_shader);
553 LLVMTypeRef vertex_header;
554 char module_name[64];
555
556 variant = MALLOC(sizeof *variant +
557 shader->variant_key_size -
558 sizeof variant->key);
559 if (!variant)
560 return NULL;
561
562 variant->llvm = llvm;
563 variant->shader = shader;
564
565 util_snprintf(module_name, sizeof(module_name), "draw_llvm_vs_variant%u",
566 variant->shader->variants_cached);
567
568 variant->gallivm = gallivm_create(module_name, llvm->context);
569
570 create_jit_types(variant);
571
572 memcpy(&variant->key, key, shader->variant_key_size);
573
574 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
575 tgsi_dump(llvm->draw->vs.vertex_shader->state.tokens, 0);
576 draw_llvm_dump_variant_key(&variant->key);
577 }
578
579 vertex_header = create_jit_vertex_header(variant->gallivm, num_inputs);
580
581 variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
582
583 draw_llvm_generate(llvm, variant);
584
585 gallivm_compile_module(variant->gallivm);
586
587 variant->jit_func = (draw_jit_vert_func)
588 gallivm_jit_function(variant->gallivm, variant->function);
589
590 gallivm_free_ir(variant->gallivm);
591
592 variant->list_item_global.base = variant;
593 variant->list_item_local.base = variant;
594 /*variant->no = */shader->variants_created++;
595 variant->list_item_global.base = variant;
596
597 return variant;
598 }
599
600
601 static void
generate_vs(struct draw_llvm_variant * variant,LLVMBuilderRef builder,struct lp_type vs_type,LLVMValueRef (* outputs)[TGSI_NUM_CHANNELS],const LLVMValueRef (* inputs)[TGSI_NUM_CHANNELS],const struct lp_bld_tgsi_system_values * system_values,LLVMValueRef context_ptr,struct lp_build_sampler_soa * draw_sampler,boolean clamp_vertex_color)602 generate_vs(struct draw_llvm_variant *variant,
603 LLVMBuilderRef builder,
604 struct lp_type vs_type,
605 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
606 const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS],
607 const struct lp_bld_tgsi_system_values *system_values,
608 LLVMValueRef context_ptr,
609 struct lp_build_sampler_soa *draw_sampler,
610 boolean clamp_vertex_color)
611 {
612 struct draw_llvm *llvm = variant->llvm;
613 const struct tgsi_token *tokens = llvm->draw->vs.vertex_shader->state.tokens;
614 LLVMValueRef consts_ptr =
615 draw_jit_context_vs_constants(variant->gallivm, context_ptr);
616 LLVMValueRef num_consts_ptr =
617 draw_jit_context_num_vs_constants(variant->gallivm, context_ptr);
618
619 lp_build_tgsi_soa(variant->gallivm,
620 tokens,
621 vs_type,
622 NULL /*struct lp_build_mask_context *mask*/,
623 consts_ptr,
624 num_consts_ptr,
625 system_values,
626 inputs,
627 outputs,
628 context_ptr,
629 NULL,
630 draw_sampler,
631 &llvm->draw->vs.vertex_shader->info,
632 NULL);
633
634 {
635 LLVMValueRef out;
636 unsigned chan, attrib;
637 struct lp_build_context bld;
638 struct tgsi_shader_info* info = &llvm->draw->vs.vertex_shader->info;
639 lp_build_context_init(&bld, variant->gallivm, vs_type);
640
641 for (attrib = 0; attrib < info->num_outputs; ++attrib) {
642 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
643 if (outputs[attrib][chan]) {
644 switch (info->output_semantic_name[attrib]) {
645 case TGSI_SEMANTIC_COLOR:
646 case TGSI_SEMANTIC_BCOLOR:
647 if (clamp_vertex_color) {
648 out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
649 out = lp_build_clamp(&bld, out, bld.zero, bld.one);
650 LLVMBuildStore(builder, out, outputs[attrib][chan]);
651 }
652 break;
653 }
654 }
655 }
656 }
657 }
658 }
659
660
661 static void
fetch_instanced(struct gallivm_state * gallivm,const struct util_format_description * format_desc,struct lp_type vs_type,LLVMValueRef vb_stride,LLVMValueRef map_ptr,LLVMValueRef buffer_size_adj,LLVMValueRef * inputs,LLVMValueRef index)662 fetch_instanced(struct gallivm_state *gallivm,
663 const struct util_format_description *format_desc,
664 struct lp_type vs_type,
665 LLVMValueRef vb_stride,
666 LLVMValueRef map_ptr,
667 LLVMValueRef buffer_size_adj,
668 LLVMValueRef *inputs,
669 LLVMValueRef index)
670 {
671 LLVMTypeRef i32_t = LLVMInt32TypeInContext(gallivm->context);
672 LLVMTypeRef aosf_t, aosi_t;
673 LLVMValueRef zero = LLVMConstNull(i32_t);
674 LLVMBuilderRef builder = gallivm->builder;
675 LLVMValueRef stride, buffer_overflowed, aos, index_valid;
676 unsigned i;
677
678 aosf_t = lp_build_vec_type(gallivm, lp_float32_vec4_type());
679 aosi_t = lp_build_vec_type(gallivm, lp_int32_vec4_type());
680
681 /* This mul can overflow. Wraparound is ok. */
682 stride = LLVMBuildMul(builder, vb_stride, index, "");
683
684 buffer_overflowed = LLVMBuildICmp(builder, LLVMIntUGE,
685 stride, buffer_size_adj,
686 "buffer_overflowed");
687
688 if (0) {
689 lp_build_print_value(gallivm, " instance index = ", index);
690 lp_build_print_value(gallivm, " buffer overflowed = ", buffer_overflowed);
691 }
692
693 index_valid = LLVMBuildNot(builder, buffer_overflowed, "");
694 index_valid = LLVMBuildSExt(builder, index_valid, i32_t, "");
695 stride = LLVMBuildAnd(builder, stride, index_valid, "");
696
697 aos = lp_build_fetch_rgba_aos(gallivm,
698 format_desc,
699 lp_float32_vec4_type(),
700 FALSE,
701 map_ptr,
702 stride, zero, zero,
703 NULL);
704
705 index_valid = lp_build_broadcast(gallivm, aosi_t, index_valid);
706 aos = LLVMBuildBitCast(builder, aos, aosi_t, "");
707 aos = LLVMBuildAnd(builder, aos, index_valid, "");
708 aos = LLVMBuildBitCast(builder, aos, aosf_t, "");
709
710 for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
711 LLVMValueRef index = lp_build_const_int32(gallivm, i);
712 inputs[i] = lp_build_extract_broadcast(gallivm,
713 lp_float32_vec4_type(),
714 vs_type, aos, index);
715 }
716 }
717
718
719 static void
fetch_vector(struct gallivm_state * gallivm,const struct util_format_description * format_desc,struct lp_type vs_type,LLVMValueRef vb_stride,LLVMValueRef map_ptr,LLVMValueRef buffer_size_adj,LLVMValueRef * inputs,LLVMValueRef indices)720 fetch_vector(struct gallivm_state *gallivm,
721 const struct util_format_description *format_desc,
722 struct lp_type vs_type,
723 LLVMValueRef vb_stride,
724 LLVMValueRef map_ptr,
725 LLVMValueRef buffer_size_adj,
726 LLVMValueRef *inputs,
727 LLVMValueRef indices)
728 {
729 LLVMBuilderRef builder = gallivm->builder;
730 struct lp_build_context blduivec;
731 struct lp_type fetch_type = vs_type;
732 LLVMValueRef offset, valid_mask;
733 unsigned i;
734
735 lp_build_context_init(&blduivec, gallivm, lp_uint_type(vs_type));
736
737 vb_stride = lp_build_broadcast_scalar(&blduivec, vb_stride);
738 buffer_size_adj = lp_build_broadcast_scalar(&blduivec, buffer_size_adj);
739
740 /* This mul can overflow. Wraparound is ok. */
741 offset = lp_build_mul(&blduivec, vb_stride, indices);
742
743 valid_mask = lp_build_compare(gallivm, blduivec.type,
744 PIPE_FUNC_LESS, offset, buffer_size_adj);
745
746 /* not valid elements use offset 0 */
747 offset = LLVMBuildAnd(builder, offset, valid_mask, "");
748
749 if (0) {
750 lp_build_print_value(gallivm, " indices = ", indices);
751 lp_build_print_value(gallivm, " offsets = ", offset);
752 lp_build_print_value(gallivm, " valid_mask = ", valid_mask);
753 }
754
755 /*
756 * Unlike fetch_instanced, use SoA fetch instead of multiple AoS fetches.
757 * This should always produce better code.
758 */
759
760 /* The type handling is annoying here... */
761 if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB &&
762 format_desc->channel[0].pure_integer) {
763 if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
764 fetch_type = lp_type_int_vec(vs_type.width, vs_type.width * vs_type.length);
765 }
766 else if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) {
767 fetch_type = lp_type_uint_vec(vs_type.width, vs_type.width * vs_type.length);
768 }
769 }
770
771 lp_build_fetch_rgba_soa(gallivm, format_desc,
772 fetch_type, FALSE, map_ptr, offset,
773 blduivec.zero, blduivec.zero,
774 NULL, inputs);
775
776 for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
777 inputs[i] = LLVMBuildBitCast(builder, inputs[i],
778 lp_build_vec_type(gallivm, vs_type), "");
779 }
780
781 /* out-of-bound fetches return all zeros */
782 for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
783 inputs[i] = LLVMBuildBitCast(builder, inputs[i], blduivec.vec_type, "");
784 inputs[i] = LLVMBuildAnd(builder, inputs[i], valid_mask, "");
785 inputs[i] = LLVMBuildBitCast(builder, inputs[i],
786 lp_build_vec_type(gallivm, vs_type), "");
787 }
788 }
789
790
791 static void
store_aos(struct gallivm_state * gallivm,LLVMValueRef io_ptr,LLVMValueRef index,LLVMValueRef value)792 store_aos(struct gallivm_state *gallivm,
793 LLVMValueRef io_ptr,
794 LLVMValueRef index,
795 LLVMValueRef value)
796 {
797 LLVMTypeRef data_ptr_type = LLVMPointerType(lp_build_vec_type(gallivm, lp_float32_vec4_type()), 0);
798 LLVMBuilderRef builder = gallivm->builder;
799 LLVMValueRef data_ptr = draw_jit_header_data(gallivm, io_ptr);
800 LLVMValueRef indices[3];
801
802 indices[0] = lp_build_const_int32(gallivm, 0);
803 indices[1] = index;
804 indices[2] = lp_build_const_int32(gallivm, 0);
805
806 data_ptr = LLVMBuildGEP(builder, data_ptr, indices, 3, "");
807 data_ptr = LLVMBuildPointerCast(builder, data_ptr, data_ptr_type, "");
808
809 #if DEBUG_STORE
810 lp_build_printf(gallivm, " ---- %p storing attribute %d (io = %p)\n", data_ptr, index, io_ptr);
811 #endif
812
813 /* Unaligned store due to the vertex header */
814 LLVMSetAlignment(LLVMBuildStore(builder, value, data_ptr), sizeof(float));
815 }
816
817 /**
818 * Adjust the mask to architecture endianess. The mask will the store in struct:
819 *
820 * struct vertex_header {
821 * unsigned clipmask:DRAW_TOTAL_CLIP_PLANES;
822 * unsigned edgeflag:1;
823 * unsigned pad:1;
824 * unsigned vertex_id:16;
825 * [...]
826 * }
827 *
828 * On little-endian machine nothing needs to done, however on bit-endian machine
829 * the mask's fields need to be adjusted with the algorithm:
830 *
831 * uint32_t reverse (uint32_t x)
832 * {
833 * return (x >> 16) | // vertex_id
834 * ((x & 0x3fff) << 18) | // clipmask
835 * ((x & 0x4000) << 3) | // pad
836 * ((x & 0x8000) << 1); // edgeflag
837 * }
838 */
839 static LLVMValueRef
adjust_mask(struct gallivm_state * gallivm,LLVMValueRef mask)840 adjust_mask(struct gallivm_state *gallivm,
841 LLVMValueRef mask)
842 {
843 #ifdef PIPE_ARCH_BIG_ENDIAN
844 LLVMBuilderRef builder = gallivm->builder;
845 LLVMValueRef vertex_id;
846 LLVMValueRef clipmask;
847 LLVMValueRef pad;
848 LLVMValueRef edgeflag;
849
850 vertex_id = LLVMBuildLShr(builder, mask, lp_build_const_int32(gallivm, 16), "");
851 clipmask = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x3fff), "");
852 clipmask = LLVMBuildShl(builder, clipmask, lp_build_const_int32(gallivm, 18), "");
853 if (0) {
854 pad = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x4000), "");
855 pad = LLVMBuildShl(builder, pad, lp_build_const_int32(gallivm, 3), "");
856 }
857 edgeflag = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x8000), "");
858 edgeflag = LLVMBuildShl(builder, edgeflag, lp_build_const_int32(gallivm, 1), "");
859
860 mask = LLVMBuildOr(builder, vertex_id, clipmask, "");
861 if (0) {
862 mask = LLVMBuildOr(builder, mask, pad, "");
863 }
864 mask = LLVMBuildOr(builder, mask, edgeflag, "");
865 #endif
866 return mask;
867 }
868
869 static void
store_aos_array(struct gallivm_state * gallivm,struct lp_type soa_type,LLVMValueRef io_ptr,LLVMValueRef * indices,LLVMValueRef * aos,int attrib,int num_outputs,LLVMValueRef clipmask,boolean need_edgeflag)870 store_aos_array(struct gallivm_state *gallivm,
871 struct lp_type soa_type,
872 LLVMValueRef io_ptr,
873 LLVMValueRef *indices,
874 LLVMValueRef* aos,
875 int attrib,
876 int num_outputs,
877 LLVMValueRef clipmask,
878 boolean need_edgeflag)
879 {
880 LLVMBuilderRef builder = gallivm->builder;
881 LLVMValueRef attr_index = lp_build_const_int32(gallivm, attrib);
882 LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
883 LLVMValueRef linear_inds[LP_MAX_VECTOR_WIDTH / 32];
884 LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
885 int vector_length = soa_type.length;
886 int i;
887
888 debug_assert(TGSI_NUM_CHANNELS == 4);
889
890 for (i = 0; i < vector_length; i++) {
891 linear_inds[i] = lp_build_const_int32(gallivm, i);
892 if (indices) {
893 inds[i] = indices[i];
894 } else {
895 inds[i] = linear_inds[i];
896 }
897 io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
898 }
899
900 if (attrib == 0) {
901 /* store vertex header for each of the n vertices */
902 LLVMValueRef val, cliptmp;
903 int vertex_id_pad_edgeflag;
904
905 /* If this assertion fails, it means we need to update the bit twidding
906 * code here. See struct vertex_header in draw_private.h.
907 */
908 assert(DRAW_TOTAL_CLIP_PLANES==14);
909 /* initialize vertex id:16 = 0xffff, pad:1 = 0, edgeflag:1 = 1 */
910 if (!need_edgeflag) {
911 vertex_id_pad_edgeflag = (0xffff << 16) | (1 << DRAW_TOTAL_CLIP_PLANES);
912 }
913 else {
914 vertex_id_pad_edgeflag = (0xffff << 16);
915 }
916 val = lp_build_const_int_vec(gallivm, lp_int_type(soa_type),
917 vertex_id_pad_edgeflag);
918 /* OR with the clipmask */
919 cliptmp = LLVMBuildOr(builder, val, clipmask, "");
920 for (i = 0; i < vector_length; i++) {
921 LLVMValueRef id_ptr = draw_jit_header_id(gallivm, io_ptrs[i]);
922 val = LLVMBuildExtractElement(builder, cliptmp, linear_inds[i], "");
923 val = adjust_mask(gallivm, val);
924 #if DEBUG_STORE
925 lp_build_printf(gallivm, "io = %p, index %d, clipmask = %x\n",
926 io_ptrs[i], inds[i], val);
927 #endif
928 LLVMBuildStore(builder, val, id_ptr);
929 }
930 }
931
932 /* store for each of the n vertices */
933 for (i = 0; i < vector_length; i++) {
934 store_aos(gallivm, io_ptrs[i], attr_index, aos[i]);
935 }
936 }
937
938
939 static void
convert_to_aos(struct gallivm_state * gallivm,LLVMValueRef io,LLVMValueRef * indices,LLVMValueRef (* outputs)[TGSI_NUM_CHANNELS],LLVMValueRef clipmask,int num_outputs,struct lp_type soa_type,boolean need_edgeflag)940 convert_to_aos(struct gallivm_state *gallivm,
941 LLVMValueRef io,
942 LLVMValueRef *indices,
943 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
944 LLVMValueRef clipmask,
945 int num_outputs,
946 struct lp_type soa_type,
947 boolean need_edgeflag)
948 {
949 LLVMBuilderRef builder = gallivm->builder;
950 unsigned chan, attrib, i;
951
952 #if DEBUG_STORE
953 lp_build_printf(gallivm, " # storing begin\n");
954 #endif
955 for (attrib = 0; attrib < num_outputs; ++attrib) {
956 LLVMValueRef soa[TGSI_NUM_CHANNELS];
957 LLVMValueRef aos[LP_MAX_VECTOR_WIDTH / 32];
958 for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
959 if (outputs[attrib][chan]) {
960 LLVMValueRef out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
961 lp_build_name(out, "output%u.%c", attrib, "xyzw"[chan]);
962 #if DEBUG_STORE
963 lp_build_printf(gallivm, "output %d : %d ",
964 LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
965 attrib, 0),
966 LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
967 chan, 0));
968 lp_build_print_value(gallivm, "val = ", out);
969 {
970 LLVMValueRef iv =
971 LLVMBuildBitCast(builder, out, lp_build_int_vec_type(gallivm, soa_type), "");
972
973 lp_build_print_value(gallivm, " ival = ", iv);
974 }
975 #endif
976 soa[chan] = out;
977 }
978 else {
979 soa[chan] = 0;
980 }
981 }
982
983
984 if (soa_type.length == TGSI_NUM_CHANNELS) {
985 lp_build_transpose_aos(gallivm, soa_type, soa, aos);
986 } else {
987 lp_build_transpose_aos(gallivm, soa_type, soa, soa);
988
989 for (i = 0; i < soa_type.length; ++i) {
990 aos[i] = lp_build_extract_range(gallivm,
991 soa[i % TGSI_NUM_CHANNELS],
992 (i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
993 TGSI_NUM_CHANNELS);
994 }
995 }
996
997 store_aos_array(gallivm,
998 soa_type,
999 io, indices,
1000 aos,
1001 attrib,
1002 num_outputs,
1003 clipmask,
1004 need_edgeflag);
1005 }
1006 #if DEBUG_STORE
1007 lp_build_printf(gallivm, " # storing end\n");
1008 #endif
1009 }
1010
1011
1012 /**
1013 * Stores original vertex positions in clip coordinates
1014 */
1015 static void
store_clip(struct gallivm_state * gallivm,const struct lp_type vs_type,LLVMValueRef io_ptr,LLVMValueRef (* outputs)[TGSI_NUM_CHANNELS],int idx)1016 store_clip(struct gallivm_state *gallivm,
1017 const struct lp_type vs_type,
1018 LLVMValueRef io_ptr,
1019 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
1020 int idx)
1021 {
1022 LLVMBuilderRef builder = gallivm->builder;
1023 LLVMValueRef soa[4];
1024 LLVMValueRef aos[LP_MAX_VECTOR_LENGTH];
1025 LLVMValueRef indices[2];
1026 LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
1027 LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
1028 LLVMValueRef clip_ptrs[LP_MAX_VECTOR_WIDTH / 32];
1029 LLVMTypeRef clip_ptr_type =
1030 LLVMPointerType(LLVMVectorType(LLVMFloatTypeInContext(gallivm->context),
1031 4), 0);
1032 int i, j;
1033
1034 indices[0] =
1035 indices[1] = lp_build_const_int32(gallivm, 0);
1036
1037 for (i = 0; i < vs_type.length; i++) {
1038 inds[i] = lp_build_const_int32(gallivm, i);
1039 io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
1040 }
1041
1042 soa[0] = LLVMBuildLoad(builder, outputs[idx][0], ""); /*x0 x1 .. xn*/
1043 soa[1] = LLVMBuildLoad(builder, outputs[idx][1], ""); /*y0 y1 .. yn*/
1044 soa[2] = LLVMBuildLoad(builder, outputs[idx][2], ""); /*z0 z1 .. zn*/
1045 soa[3] = LLVMBuildLoad(builder, outputs[idx][3], ""); /*w0 w1 .. wn*/
1046
1047 for (i = 0; i < vs_type.length; i++) {
1048 clip_ptrs[i] = draw_jit_header_clip_pos(gallivm, io_ptrs[i]);
1049 }
1050
1051 lp_build_transpose_aos(gallivm, vs_type, soa, soa);
1052 for (i = 0; i < vs_type.length; ++i) {
1053 aos[i] = lp_build_extract_range(gallivm,
1054 soa[i % TGSI_NUM_CHANNELS],
1055 (i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
1056 TGSI_NUM_CHANNELS);
1057 }
1058
1059 for (j = 0; j < vs_type.length; j++) {
1060 LLVMValueRef clip_ptr;
1061
1062 clip_ptr = LLVMBuildGEP(builder, clip_ptrs[j], indices, 2, "clipo");
1063 clip_ptr = LLVMBuildPointerCast(builder, clip_ptr, clip_ptr_type, "");
1064
1065 /* Unaligned store */
1066 LLVMSetAlignment(LLVMBuildStore(builder, aos[j], clip_ptr), sizeof(float));
1067 }
1068 }
1069
1070
1071 /**
1072 * Transforms the outputs for viewport mapping
1073 */
1074 static void
generate_viewport(struct draw_llvm_variant * variant,LLVMBuilderRef builder,struct lp_type vs_type,LLVMValueRef (* outputs)[TGSI_NUM_CHANNELS],LLVMValueRef context_ptr)1075 generate_viewport(struct draw_llvm_variant *variant,
1076 LLVMBuilderRef builder,
1077 struct lp_type vs_type,
1078 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
1079 LLVMValueRef context_ptr)
1080 {
1081 int i;
1082 struct gallivm_state *gallivm = variant->gallivm;
1083 struct lp_type f32_type = vs_type;
1084 const unsigned pos = variant->llvm->draw->vs.position_output;
1085 LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
1086 LLVMValueRef out3 = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn*/
1087 LLVMValueRef const1 = lp_build_const_vec(gallivm, f32_type, 1.0); /*1.0 1.0 1.0 1.0*/
1088 LLVMValueRef vp_ptr = draw_jit_context_viewports(gallivm, context_ptr);
1089
1090 /* We treat pipe_viewport_state as a float array */
1091 const int scale_index_offset = offsetof(struct pipe_viewport_state, scale) / sizeof(float);
1092 const int trans_index_offset = offsetof(struct pipe_viewport_state, translate) / sizeof(float);
1093
1094 /* for 1/w convention*/
1095 out3 = LLVMBuildFDiv(builder, const1, out3, "");
1096 LLVMBuildStore(builder, out3, outputs[pos][3]);
1097
1098 /* Viewport Mapping */
1099 for (i=0; i<3; i++) {
1100 LLVMValueRef out = LLVMBuildLoad(builder, outputs[pos][i], ""); /*x0 x1 .. xn*/
1101 LLVMValueRef scale;
1102 LLVMValueRef trans;
1103 LLVMValueRef scale_i;
1104 LLVMValueRef trans_i;
1105 LLVMValueRef index;
1106
1107 index = lp_build_const_int32(gallivm, i + scale_index_offset);
1108 scale_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
1109
1110 index = lp_build_const_int32(gallivm, i + trans_index_offset);
1111 trans_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
1112
1113 scale = lp_build_broadcast(gallivm, vs_type_llvm,
1114 LLVMBuildLoad(builder, scale_i, "scale"));
1115 trans = lp_build_broadcast(gallivm, vs_type_llvm,
1116 LLVMBuildLoad(builder, trans_i, "trans"));
1117
1118 /* divide by w */
1119 out = LLVMBuildFMul(builder, out, out3, "");
1120 /* mult by scale, add translation */
1121 out = lp_build_fmuladd(builder, out, scale, trans);
1122
1123 /* store transformed outputs */
1124 LLVMBuildStore(builder, out, outputs[pos][i]);
1125 }
1126
1127 }
1128
1129
1130 /**
1131 * Returns clipmask as nxi32 bitmask for the n vertices
1132 */
1133 static LLVMValueRef
generate_clipmask(struct draw_llvm * llvm,struct gallivm_state * gallivm,struct lp_type vs_type,LLVMValueRef (* outputs)[TGSI_NUM_CHANNELS],struct draw_llvm_variant_key * key,LLVMValueRef context_ptr,boolean * have_clipdist)1134 generate_clipmask(struct draw_llvm *llvm,
1135 struct gallivm_state *gallivm,
1136 struct lp_type vs_type,
1137 LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
1138 struct draw_llvm_variant_key *key,
1139 LLVMValueRef context_ptr,
1140 boolean *have_clipdist)
1141 {
1142 LLVMBuilderRef builder = gallivm->builder;
1143 LLVMValueRef mask; /* stores the <nxi32> clipmasks */
1144 LLVMValueRef test, temp;
1145 LLVMValueRef zero, shift;
1146 LLVMValueRef pos_x, pos_y, pos_z, pos_w;
1147 LLVMValueRef cv_x, cv_y, cv_z, cv_w;
1148 LLVMValueRef plane1, planes, plane_ptr, sum;
1149 struct lp_type f32_type = vs_type;
1150 struct lp_type i32_type = lp_int_type(vs_type);
1151 const unsigned pos = llvm->draw->vs.position_output;
1152 const unsigned cv = llvm->draw->vs.clipvertex_output;
1153 int num_written_clipdistance = llvm->draw->vs.vertex_shader->info.num_written_clipdistance;
1154 boolean have_cd = false;
1155 boolean clip_user = key->clip_user;
1156 unsigned ucp_enable = key->ucp_enable;
1157 unsigned cd[2];
1158
1159 cd[0] = llvm->draw->vs.ccdistance_output[0];
1160 cd[1] = llvm->draw->vs.ccdistance_output[1];
1161
1162 if (cd[0] != pos || cd[1] != pos)
1163 have_cd = true;
1164
1165 if (num_written_clipdistance && !clip_user) {
1166 clip_user = true;
1167 ucp_enable = (1 << num_written_clipdistance) - 1;
1168 }
1169
1170 mask = lp_build_const_int_vec(gallivm, i32_type, 0);
1171 temp = lp_build_const_int_vec(gallivm, i32_type, 0);
1172 zero = lp_build_const_vec(gallivm, f32_type, 0); /* 0.0f 0.0f 0.0f 0.0f */
1173 shift = lp_build_const_int_vec(gallivm, i32_type, 1); /* 1 1 1 1 */
1174
1175 /*
1176 * load clipvertex and position from correct locations.
1177 * if they are the same just load them once.
1178 */
1179 pos_x = LLVMBuildLoad(builder, outputs[pos][0], ""); /*x0 x1 .. xn */
1180 pos_y = LLVMBuildLoad(builder, outputs[pos][1], ""); /*y0 y1 .. yn */
1181 pos_z = LLVMBuildLoad(builder, outputs[pos][2], ""); /*z0 z1 .. zn */
1182 pos_w = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn */
1183
1184 if (clip_user && cv != pos) {
1185 cv_x = LLVMBuildLoad(builder, outputs[cv][0], ""); /*x0 x1 .. xn */
1186 cv_y = LLVMBuildLoad(builder, outputs[cv][1], ""); /*y0 y1 .. yn */
1187 cv_z = LLVMBuildLoad(builder, outputs[cv][2], ""); /*z0 z1 .. zn */
1188 cv_w = LLVMBuildLoad(builder, outputs[cv][3], ""); /*w0 w1 .. wn */
1189 } else {
1190 cv_x = pos_x;
1191 cv_y = pos_y;
1192 cv_z = pos_z;
1193 cv_w = pos_w;
1194 }
1195
1196 /*
1197 * Be careful with the comparisons and NaNs (using llvm's unordered
1198 * comparisons here).
1199 */
1200 /* Cliptest, for hardwired planes */
1201 /*
1202 * XXX should take guardband into account (currently not in key).
1203 * Otherwise might run the draw pipeline stages for nothing.
1204 */
1205 if (key->clip_xy) {
1206 /* plane 1 */
1207 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_x , pos_w);
1208 temp = shift;
1209 test = LLVMBuildAnd(builder, test, temp, "");
1210 mask = test;
1211
1212 /* plane 2 */
1213 test = LLVMBuildFAdd(builder, pos_x, pos_w, "");
1214 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1215 temp = LLVMBuildShl(builder, temp, shift, "");
1216 test = LLVMBuildAnd(builder, test, temp, "");
1217 mask = LLVMBuildOr(builder, mask, test, "");
1218
1219 /* plane 3 */
1220 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_y, pos_w);
1221 temp = LLVMBuildShl(builder, temp, shift, "");
1222 test = LLVMBuildAnd(builder, test, temp, "");
1223 mask = LLVMBuildOr(builder, mask, test, "");
1224
1225 /* plane 4 */
1226 test = LLVMBuildFAdd(builder, pos_y, pos_w, "");
1227 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1228 temp = LLVMBuildShl(builder, temp, shift, "");
1229 test = LLVMBuildAnd(builder, test, temp, "");
1230 mask = LLVMBuildOr(builder, mask, test, "");
1231 }
1232
1233 if (key->clip_z) {
1234 temp = lp_build_const_int_vec(gallivm, i32_type, 16);
1235 if (key->clip_halfz) {
1236 /* plane 5 */
1237 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, pos_z);
1238 test = LLVMBuildAnd(builder, test, temp, "");
1239 mask = LLVMBuildOr(builder, mask, test, "");
1240 }
1241 else {
1242 /* plane 5 */
1243 test = LLVMBuildFAdd(builder, pos_z, pos_w, "");
1244 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
1245 test = LLVMBuildAnd(builder, test, temp, "");
1246 mask = LLVMBuildOr(builder, mask, test, "");
1247 }
1248 /* plane 6 */
1249 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_z, pos_w);
1250 temp = LLVMBuildShl(builder, temp, shift, "");
1251 test = LLVMBuildAnd(builder, test, temp, "");
1252 mask = LLVMBuildOr(builder, mask, test, "");
1253 }
1254
1255 if (clip_user) {
1256 LLVMValueRef planes_ptr = draw_jit_context_planes(gallivm, context_ptr);
1257 LLVMValueRef indices[3];
1258 LLVMValueRef is_nan_or_inf;
1259
1260 /* userclip planes */
1261 while (ucp_enable) {
1262 unsigned plane_idx = ffs(ucp_enable)-1;
1263 ucp_enable &= ~(1 << plane_idx);
1264 plane_idx += 6;
1265
1266 if (have_cd && num_written_clipdistance) {
1267 LLVMValueRef clipdist;
1268 int i;
1269 i = plane_idx - 6;
1270
1271 *have_clipdist = TRUE;
1272 if (i < 4) {
1273 clipdist = LLVMBuildLoad(builder, outputs[cd[0]][i], "");
1274 } else {
1275 clipdist = LLVMBuildLoad(builder, outputs[cd[1]][i-4], "");
1276 }
1277 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, clipdist);
1278 is_nan_or_inf = lp_build_is_inf_or_nan(gallivm, vs_type, clipdist);
1279 test = LLVMBuildOr(builder, test, is_nan_or_inf, "");
1280 temp = lp_build_const_int_vec(gallivm, i32_type, 1LL << plane_idx);
1281 test = LLVMBuildAnd(builder, test, temp, "");
1282 mask = LLVMBuildOr(builder, mask, test, "");
1283 } else {
1284 LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
1285 indices[0] = lp_build_const_int32(gallivm, 0);
1286 indices[1] = lp_build_const_int32(gallivm, plane_idx);
1287
1288 indices[2] = lp_build_const_int32(gallivm, 0);
1289 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1290 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_x");
1291 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1292 sum = LLVMBuildFMul(builder, planes, cv_x, "");
1293
1294 indices[2] = lp_build_const_int32(gallivm, 1);
1295 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1296 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_y");
1297 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1298 sum = lp_build_fmuladd(builder, planes, cv_y, sum);
1299
1300 indices[2] = lp_build_const_int32(gallivm, 2);
1301 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1302 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_z");
1303 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1304 sum = lp_build_fmuladd(builder, planes, cv_z, sum);
1305
1306 indices[2] = lp_build_const_int32(gallivm, 3);
1307 plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
1308 plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_w");
1309 planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
1310 sum = lp_build_fmuladd(builder, planes, cv_w, sum);
1311
1312 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, sum);
1313 temp = lp_build_const_int_vec(gallivm, i32_type, 1LL << plane_idx);
1314 test = LLVMBuildAnd(builder, test, temp, "");
1315 mask = LLVMBuildOr(builder, mask, test, "");
1316 }
1317 }
1318 }
1319 if (key->need_edgeflags) {
1320 /*
1321 * This isn't really part of clipmask but stored the same in vertex
1322 * header later, so do it here.
1323 */
1324 unsigned edge_attr = llvm->draw->vs.edgeflag_output;
1325 LLVMValueRef one = lp_build_const_vec(gallivm, f32_type, 1.0);
1326 LLVMValueRef edgeflag = LLVMBuildLoad(builder, outputs[edge_attr][0], "");
1327 test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_EQUAL, one, edgeflag);
1328 temp = lp_build_const_int_vec(gallivm, i32_type,
1329 1LL << DRAW_TOTAL_CLIP_PLANES);
1330 test = LLVMBuildAnd(builder, test, temp, "");
1331 mask = LLVMBuildOr(builder, mask, test, "");
1332 }
1333 return mask;
1334 }
1335
1336
1337 /**
1338 * Returns boolean if any clipping has occurred
1339 * Used zero/one i8 value to represent boolean
1340 */
1341 static LLVMValueRef
clipmask_booli8(struct gallivm_state * gallivm,const struct lp_type vs_type,LLVMValueRef clipmask_bool_ptr,boolean edgeflag_in_clipmask)1342 clipmask_booli8(struct gallivm_state *gallivm,
1343 const struct lp_type vs_type,
1344 LLVMValueRef clipmask_bool_ptr,
1345 boolean edgeflag_in_clipmask)
1346 {
1347 LLVMBuilderRef builder = gallivm->builder;
1348 LLVMTypeRef int8_type = LLVMInt8TypeInContext(gallivm->context);
1349 LLVMValueRef clipmask_bool = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
1350 LLVMValueRef ret;
1351 struct lp_build_context bldivec;
1352
1353 lp_build_context_init(&bldivec, gallivm, lp_int_type(vs_type));
1354
1355 /*
1356 * We need to invert the edgeflag bit from the clipmask here
1357 * (because the result is really if we want to run the pipeline or not
1358 * and we (may) need it if edgeflag was 0).
1359 */
1360 if (edgeflag_in_clipmask) {
1361 LLVMValueRef edge = lp_build_const_int_vec(gallivm, bldivec.type,
1362 1LL << DRAW_TOTAL_CLIP_PLANES);
1363 clipmask_bool = LLVMBuildXor(builder, clipmask_bool, edge, "");
1364 }
1365
1366 /*
1367 * XXX: probably should mask off bits from the mask which come from
1368 * vertices which were beyond the count (i.e. indices_valid for
1369 * linear fetches, for elts ones we don't have the correct mask
1370 * right now). Otherwise might run the pipeline for nothing,
1371 * though everything should still work.
1372 */
1373 ret = lp_build_any_true_range(&bldivec, vs_type.length, clipmask_bool);
1374 ret = LLVMBuildZExt(builder, ret, int8_type, "");
1375 return ret;
1376 }
1377
1378 static LLVMValueRef
draw_gs_llvm_fetch_input(const struct lp_build_tgsi_gs_iface * gs_iface,struct lp_build_tgsi_context * bld_base,boolean is_vindex_indirect,LLVMValueRef vertex_index,boolean is_aindex_indirect,LLVMValueRef attrib_index,LLVMValueRef swizzle_index)1379 draw_gs_llvm_fetch_input(const struct lp_build_tgsi_gs_iface *gs_iface,
1380 struct lp_build_tgsi_context * bld_base,
1381 boolean is_vindex_indirect,
1382 LLVMValueRef vertex_index,
1383 boolean is_aindex_indirect,
1384 LLVMValueRef attrib_index,
1385 LLVMValueRef swizzle_index)
1386 {
1387 const struct draw_gs_llvm_iface *gs = draw_gs_llvm_iface(gs_iface);
1388 struct gallivm_state *gallivm = bld_base->base.gallivm;
1389 LLVMBuilderRef builder = gallivm->builder;
1390 LLVMValueRef indices[3];
1391 LLVMValueRef res;
1392 struct lp_type type = bld_base->base.type;
1393
1394 if (is_vindex_indirect || is_aindex_indirect) {
1395 int i;
1396 res = bld_base->base.zero;
1397 for (i = 0; i < type.length; ++i) {
1398 LLVMValueRef idx = lp_build_const_int32(gallivm, i);
1399 LLVMValueRef vert_chan_index = vertex_index;
1400 LLVMValueRef attr_chan_index = attrib_index;
1401 LLVMValueRef channel_vec, value;
1402
1403 if (is_vindex_indirect) {
1404 vert_chan_index = LLVMBuildExtractElement(builder,
1405 vertex_index, idx, "");
1406 }
1407 if (is_aindex_indirect) {
1408 attr_chan_index = LLVMBuildExtractElement(builder,
1409 attrib_index, idx, "");
1410 }
1411
1412 indices[0] = vert_chan_index;
1413 indices[1] = attr_chan_index;
1414 indices[2] = swizzle_index;
1415
1416 channel_vec = LLVMBuildGEP(builder, gs->input, indices, 3, "");
1417 channel_vec = LLVMBuildLoad(builder, channel_vec, "");
1418 value = LLVMBuildExtractElement(builder, channel_vec, idx, "");
1419
1420 res = LLVMBuildInsertElement(builder, res, value, idx, "");
1421 }
1422 } else {
1423 indices[0] = vertex_index;
1424 indices[1] = attrib_index;
1425 indices[2] = swizzle_index;
1426
1427 res = LLVMBuildGEP(builder, gs->input, indices, 3, "");
1428 res = LLVMBuildLoad(builder, res, "");
1429 }
1430
1431 return res;
1432 }
1433
1434 static void
draw_gs_llvm_emit_vertex(const struct lp_build_tgsi_gs_iface * gs_base,struct lp_build_tgsi_context * bld_base,LLVMValueRef (* outputs)[4],LLVMValueRef emitted_vertices_vec)1435 draw_gs_llvm_emit_vertex(const struct lp_build_tgsi_gs_iface *gs_base,
1436 struct lp_build_tgsi_context * bld_base,
1437 LLVMValueRef (*outputs)[4],
1438 LLVMValueRef emitted_vertices_vec)
1439 {
1440 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1441 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1442 struct gallivm_state *gallivm = variant->gallivm;
1443 LLVMBuilderRef builder = gallivm->builder;
1444 struct lp_type gs_type = bld_base->base.type;
1445 LLVMValueRef clipmask = lp_build_const_int_vec(gallivm,
1446 lp_int_type(gs_type), 0);
1447 LLVMValueRef indices[LP_MAX_VECTOR_LENGTH];
1448 LLVMValueRef next_prim_offset =
1449 lp_build_const_int32(gallivm, variant->shader->base.primitive_boundary);
1450 LLVMValueRef io = variant->io_ptr;
1451 unsigned i;
1452 const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
1453
1454 for (i = 0; i < gs_type.length; ++i) {
1455 LLVMValueRef ind = lp_build_const_int32(gallivm, i);
1456 LLVMValueRef currently_emitted =
1457 LLVMBuildExtractElement(builder, emitted_vertices_vec, ind, "");
1458 indices[i] = LLVMBuildMul(builder, ind, next_prim_offset, "");
1459 indices[i] = LLVMBuildAdd(builder, indices[i], currently_emitted, "");
1460 }
1461
1462 convert_to_aos(gallivm, io, indices,
1463 outputs, clipmask,
1464 gs_info->num_outputs, gs_type,
1465 FALSE);
1466 }
1467
1468 static void
draw_gs_llvm_end_primitive(const struct lp_build_tgsi_gs_iface * gs_base,struct lp_build_tgsi_context * bld_base,LLVMValueRef verts_per_prim_vec,LLVMValueRef emitted_prims_vec)1469 draw_gs_llvm_end_primitive(const struct lp_build_tgsi_gs_iface *gs_base,
1470 struct lp_build_tgsi_context * bld_base,
1471 LLVMValueRef verts_per_prim_vec,
1472 LLVMValueRef emitted_prims_vec)
1473 {
1474 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1475 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1476 struct gallivm_state *gallivm = variant->gallivm;
1477 LLVMBuilderRef builder = gallivm->builder;
1478 LLVMValueRef prim_lengts_ptr =
1479 draw_gs_jit_prim_lengths(variant->gallivm, variant->context_ptr);
1480 unsigned i;
1481
1482 for (i = 0; i < bld_base->base.type.length; ++i) {
1483 LLVMValueRef ind = lp_build_const_int32(gallivm, i);
1484 LLVMValueRef prims_emitted =
1485 LLVMBuildExtractElement(builder, emitted_prims_vec, ind, "");
1486 LLVMValueRef store_ptr;
1487 LLVMValueRef num_vertices =
1488 LLVMBuildExtractElement(builder, verts_per_prim_vec, ind, "");
1489
1490 store_ptr = LLVMBuildGEP(builder, prim_lengts_ptr, &prims_emitted, 1, "");
1491 store_ptr = LLVMBuildLoad(builder, store_ptr, "");
1492 store_ptr = LLVMBuildGEP(builder, store_ptr, &ind, 1, "");
1493 LLVMBuildStore(builder, num_vertices, store_ptr);
1494 }
1495 }
1496
1497 static void
draw_gs_llvm_epilogue(const struct lp_build_tgsi_gs_iface * gs_base,struct lp_build_tgsi_context * bld_base,LLVMValueRef total_emitted_vertices_vec,LLVMValueRef emitted_prims_vec)1498 draw_gs_llvm_epilogue(const struct lp_build_tgsi_gs_iface *gs_base,
1499 struct lp_build_tgsi_context * bld_base,
1500 LLVMValueRef total_emitted_vertices_vec,
1501 LLVMValueRef emitted_prims_vec)
1502 {
1503 const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
1504 struct draw_gs_llvm_variant *variant = gs_iface->variant;
1505 struct gallivm_state *gallivm = variant->gallivm;
1506 LLVMBuilderRef builder = gallivm->builder;
1507 LLVMValueRef emitted_verts_ptr =
1508 draw_gs_jit_emitted_vertices(gallivm, variant->context_ptr);
1509 LLVMValueRef emitted_prims_ptr =
1510 draw_gs_jit_emitted_prims(gallivm, variant->context_ptr);
1511 LLVMValueRef zero = lp_build_const_int32(gallivm, 0);
1512
1513 emitted_verts_ptr = LLVMBuildGEP(builder, emitted_verts_ptr, &zero, 0, "");
1514 emitted_prims_ptr = LLVMBuildGEP(builder, emitted_prims_ptr, &zero, 0, "");
1515
1516 LLVMBuildStore(builder, total_emitted_vertices_vec, emitted_verts_ptr);
1517 LLVMBuildStore(builder, emitted_prims_vec, emitted_prims_ptr);
1518 }
1519
1520 static void
draw_llvm_generate(struct draw_llvm * llvm,struct draw_llvm_variant * variant)1521 draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant)
1522 {
1523 struct gallivm_state *gallivm = variant->gallivm;
1524 LLVMContextRef context = gallivm->context;
1525 LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
1526 LLVMTypeRef arg_types[11];
1527 unsigned num_arg_types = ARRAY_SIZE(arg_types);
1528 LLVMTypeRef func_type;
1529 LLVMValueRef context_ptr;
1530 LLVMBasicBlockRef block;
1531 LLVMBuilderRef builder;
1532 char func_name[64];
1533 struct lp_type vs_type;
1534 LLVMValueRef count, fetch_elts, start_or_maxelt;
1535 LLVMValueRef vertex_id_offset, start_instance;
1536 LLVMValueRef stride, step, io_itr;
1537 LLVMValueRef ind_vec, start_vec, have_elts, fetch_max, tmp;
1538 LLVMValueRef io_ptr, vbuffers_ptr, vb_ptr;
1539 LLVMValueRef vb_stride[PIPE_MAX_ATTRIBS];
1540 LLVMValueRef map_ptr[PIPE_MAX_ATTRIBS];
1541 LLVMValueRef buffer_size_adj[PIPE_MAX_ATTRIBS];
1542 LLVMValueRef instance_index[PIPE_MAX_ATTRIBS];
1543 LLVMValueRef fake_buf_ptr, fake_buf;
1544
1545 struct draw_context *draw = llvm->draw;
1546 const struct tgsi_shader_info *vs_info = &draw->vs.vertex_shader->info;
1547 unsigned i, j;
1548 struct lp_build_context bld, blduivec;
1549 struct lp_build_loop_state lp_loop;
1550 struct lp_build_if_state if_ctx;
1551 const int vector_length = lp_native_vector_width / 32;
1552 LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
1553 struct lp_build_sampler_soa *sampler = 0;
1554 LLVMValueRef ret, clipmask_bool_ptr;
1555 struct draw_llvm_variant_key *key = &variant->key;
1556 /* If geometry shader is present we need to skip both the viewport
1557 * transformation and clipping otherwise the inputs to the geometry
1558 * shader will be incorrect.
1559 * The code can't handle vp transform when vs writes vp index neither
1560 * (though this would be fixable here, but couldn't just broadcast
1561 * the values).
1562 */
1563 const boolean bypass_viewport = key->has_gs || key->bypass_viewport ||
1564 vs_info->writes_viewport_index;
1565 const boolean enable_cliptest = !key->has_gs && (key->clip_xy ||
1566 key->clip_z ||
1567 key->clip_user ||
1568 key->need_edgeflags);
1569 LLVMValueRef variant_func;
1570 const unsigned pos = draw->vs.position_output;
1571 const unsigned cv = draw->vs.clipvertex_output;
1572 boolean have_clipdist = FALSE;
1573 struct lp_bld_tgsi_system_values system_values;
1574
1575 memset(&system_values, 0, sizeof(system_values));
1576
1577 util_snprintf(func_name, sizeof(func_name), "draw_llvm_vs_variant%u",
1578 variant->shader->variants_cached);
1579
1580 i = 0;
1581 arg_types[i++] = get_context_ptr_type(variant); /* context */
1582 arg_types[i++] = get_vertex_header_ptr_type(variant); /* vertex_header */
1583 arg_types[i++] = get_buffer_ptr_type(variant); /* vbuffers */
1584 arg_types[i++] = int32_type; /* count */
1585 arg_types[i++] = int32_type; /* start/fetch_elt_max */
1586 arg_types[i++] = int32_type; /* stride */
1587 arg_types[i++] = get_vb_ptr_type(variant); /* pipe_vertex_buffer's */
1588 arg_types[i++] = int32_type; /* instance_id */
1589 arg_types[i++] = int32_type; /* vertex_id_offset */
1590 arg_types[i++] = int32_type; /* start_instance */
1591 arg_types[i++] = LLVMPointerType(int32_type, 0); /* fetch_elts */
1592
1593 func_type = LLVMFunctionType(LLVMInt8TypeInContext(context),
1594 arg_types, num_arg_types, 0);
1595
1596 variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
1597 variant->function = variant_func;
1598
1599 LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
1600 for (i = 0; i < num_arg_types; ++i)
1601 if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
1602 lp_add_function_attr(variant_func, i + 1, LP_FUNC_ATTR_NOALIAS);
1603
1604 context_ptr = LLVMGetParam(variant_func, 0);
1605 io_ptr = LLVMGetParam(variant_func, 1);
1606 vbuffers_ptr = LLVMGetParam(variant_func, 2);
1607 count = LLVMGetParam(variant_func, 3);
1608 /*
1609 * XXX: the maxelt part is unused. Not really useful, since we cannot
1610 * get index buffer overflows due to vsplit (which provides its own
1611 * elts buffer, with a different size than what's passed in here).
1612 */
1613 start_or_maxelt = LLVMGetParam(variant_func, 4);
1614 /*
1615 * XXX: stride is actually unused. The stride we use is strictly calculated
1616 * from the number of outputs (including the draw_extra outputs).
1617 * Should probably fix some day (we need a new vs just because of extra
1618 * outputs which the generated vs won't touch).
1619 */
1620 stride = LLVMGetParam(variant_func, 5);
1621 vb_ptr = LLVMGetParam(variant_func, 6);
1622 system_values.instance_id = LLVMGetParam(variant_func, 7);
1623 vertex_id_offset = LLVMGetParam(variant_func, 8);
1624 start_instance = LLVMGetParam(variant_func, 9);
1625 fetch_elts = LLVMGetParam(variant_func, 10);
1626
1627 lp_build_name(context_ptr, "context");
1628 lp_build_name(io_ptr, "io");
1629 lp_build_name(vbuffers_ptr, "vbuffers");
1630 lp_build_name(count, "count");
1631 lp_build_name(start_or_maxelt, "start_or_maxelt");
1632 lp_build_name(stride, "stride");
1633 lp_build_name(vb_ptr, "vb");
1634 lp_build_name(system_values.instance_id, "instance_id");
1635 lp_build_name(vertex_id_offset, "vertex_id_offset");
1636 lp_build_name(start_instance, "start_instance");
1637 lp_build_name(fetch_elts, "fetch_elts");
1638
1639 /*
1640 * Function body
1641 */
1642
1643 block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
1644 builder = gallivm->builder;
1645 LLVMPositionBuilderAtEnd(builder, block);
1646
1647 memset(&vs_type, 0, sizeof vs_type);
1648 vs_type.floating = TRUE; /* floating point values */
1649 vs_type.sign = TRUE; /* values are signed */
1650 vs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
1651 vs_type.width = 32; /* 32-bit float */
1652 vs_type.length = vector_length;
1653
1654 lp_build_context_init(&bld, gallivm, lp_type_uint(32));
1655 lp_build_context_init(&blduivec, gallivm, lp_uint_type(vs_type));
1656
1657 /* hold temporary "bool" clipmask */
1658 clipmask_bool_ptr = lp_build_alloca(gallivm, blduivec.vec_type, "");
1659
1660 fake_buf = lp_build_alloca_undef(gallivm,
1661 LLVMVectorType(LLVMInt64TypeInContext(context), 4), "");
1662 fake_buf = LLVMBuildBitCast(builder, fake_buf,
1663 LLVMPointerType(LLVMInt8TypeInContext(context), 0), "");
1664 fake_buf_ptr = LLVMBuildGEP(builder, fake_buf, &bld.zero, 1, "");
1665
1666 /* code generated texture sampling */
1667 sampler = draw_llvm_sampler_soa_create(draw_llvm_variant_key_samplers(key));
1668
1669 step = lp_build_const_int32(gallivm, vector_length);
1670
1671 ind_vec = blduivec.undef;
1672 for (i = 0; i < vs_type.length; i++) {
1673 LLVMValueRef index = lp_build_const_int32(gallivm, i);
1674 ind_vec = LLVMBuildInsertElement(builder, ind_vec, index, index, "");
1675 }
1676
1677 have_elts = LLVMBuildICmp(builder, LLVMIntNE,
1678 LLVMConstPointerNull(arg_types[10]), fetch_elts, "");
1679
1680 fetch_max = LLVMBuildSub(builder, count, bld.one, "fetch_max");
1681 fetch_max = lp_build_broadcast_scalar(&blduivec, fetch_max);
1682 /*
1683 * Only needed for non-indexed path.
1684 */
1685 start_vec = lp_build_broadcast_scalar(&blduivec, start_or_maxelt);
1686
1687 /*
1688 * Pre-calculate everything which is constant per shader invocation.
1689 */
1690 for (j = 0; j < key->nr_vertex_elements; ++j) {
1691 LLVMValueRef vb_buffer_offset, buffer_size, temp_ptr;
1692 LLVMValueRef vb_info, vbuffer_ptr, buf_offset, ofbit;
1693 struct pipe_vertex_element *velem = &key->vertex_element[j];
1694 LLVMValueRef vb_index =
1695 lp_build_const_int32(gallivm, velem->vertex_buffer_index);
1696 LLVMValueRef bsize = lp_build_const_int32(gallivm,
1697 util_format_get_blocksize(velem->src_format));
1698 LLVMValueRef src_offset = lp_build_const_int32(gallivm,
1699 velem->src_offset);
1700 struct lp_build_if_state if_ctx;
1701
1702 if (velem->src_format != PIPE_FORMAT_NONE) {
1703 vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr, &vb_index, 1, "");
1704 vb_info = LLVMBuildGEP(builder, vb_ptr, &vb_index, 1, "");
1705 vb_stride[j] = draw_jit_vbuffer_stride(gallivm, vb_info);
1706 vb_stride[j] = LLVMBuildZExt(gallivm->builder, vb_stride[j],
1707 LLVMInt32TypeInContext(context), "");
1708 vb_buffer_offset = draw_jit_vbuffer_offset(gallivm, vb_info);
1709 map_ptr[j] = draw_jit_dvbuffer_map(gallivm, vbuffer_ptr);
1710 buffer_size = draw_jit_dvbuffer_size(gallivm, vbuffer_ptr);
1711
1712 ofbit = NULL;
1713 /*
1714 * We'll set buffer_size_adj to zero if we have of, so it will
1715 * always overflow later automatically without having to keep ofbit.
1716 * Overflows (with normal wraparound) doing the actual offset
1717 * calculation should be ok, just not for the buffer size calc.
1718 * It would also be possible to detect such overflows and return
1719 * zeros if that happens, but this would be more complex.
1720 */
1721 buf_offset = lp_build_add(&bld, vb_buffer_offset, src_offset);
1722 tmp = lp_build_sub(&bld, bsize, bld.one);
1723 buffer_size_adj[j] = lp_build_usub_overflow(gallivm, buffer_size, tmp,
1724 &ofbit);
1725 buffer_size_adj[j] = lp_build_usub_overflow(gallivm, buffer_size_adj[j],
1726 buf_offset, &ofbit);
1727
1728 /*
1729 * We can't easily set fake vertex buffers outside the generated code.
1730 * Hence, set fake vertex buffers here instead basically, so fetch
1731 * code can always fetch using offset 0, eliminating all control flow
1732 * inside the main loop.
1733 * (Alternatively, could have control flow per vector skipping fetch
1734 * if ofbit is true.)
1735 */
1736 if (velem->instance_divisor) {
1737 /*
1738 * Index is equal to the start instance plus the number of current
1739 * instance divided by the divisor. In this case we compute it as:
1740 * index = start_instance + (instance_id / divisor).
1741 * Note we could actually do the fetch here, outside the loop -
1742 * it's all constant, hopefully llvm recognizes this.
1743 */
1744 LLVMValueRef current_instance;
1745 current_instance = LLVMBuildUDiv(builder, system_values.instance_id,
1746 lp_build_const_int32(gallivm,
1747 velem->instance_divisor),
1748 "instance_divisor");
1749 instance_index[j] = lp_build_uadd_overflow(gallivm, start_instance,
1750 current_instance, &ofbit);
1751 }
1752
1753 buffer_size_adj[j] = LLVMBuildSelect(builder, ofbit, bld.zero,
1754 buffer_size_adj[j], "");
1755
1756 temp_ptr = lp_build_alloca_undef(gallivm,
1757 LLVMPointerType(LLVMInt8TypeInContext(context), 0), "");
1758
1759 lp_build_if(&if_ctx, gallivm, ofbit);
1760 {
1761 LLVMBuildStore(builder, fake_buf_ptr, temp_ptr);
1762 }
1763 lp_build_else(&if_ctx);
1764 {
1765 map_ptr[j] = LLVMBuildGEP(builder, map_ptr[j], &buf_offset, 1, "");
1766 LLVMBuildStore(builder, map_ptr[j], temp_ptr);
1767 }
1768 lp_build_endif(&if_ctx);
1769 map_ptr[j] = LLVMBuildLoad(builder, temp_ptr, "map_ptr");
1770
1771 if (0) {
1772 lp_build_printf(gallivm, "velem %d, vbuf index = %u, vb_stride = %u\n",
1773 lp_build_const_int32(gallivm, j),
1774 vb_index, vb_stride[j]);
1775 lp_build_printf(gallivm,
1776 " vb_buffer_offset = %u, src_offset = %u, buf_offset = %u\n",
1777 vb_buffer_offset, src_offset, buf_offset);
1778 lp_build_printf(gallivm, " buffer size = %u, blocksize = %u\n",
1779 buffer_size, bsize);
1780 lp_build_printf(gallivm, " instance_id = %u\n", system_values.instance_id);
1781 }
1782 }
1783 }
1784
1785 lp_build_loop_begin(&lp_loop, gallivm, bld.zero);
1786 {
1787 LLVMValueRef inputs[PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS];
1788 LLVMValueRef io;
1789 LLVMValueRef clipmask; /* holds the clipmask value */
1790 LLVMValueRef true_index_array, index_store;
1791 const LLVMValueRef (*ptr_aos)[TGSI_NUM_CHANNELS];
1792
1793 io_itr = lp_loop.counter;
1794
1795 io = LLVMBuildGEP(builder, io_ptr, &io_itr, 1, "");
1796 #if DEBUG_STORE
1797 lp_build_printf(gallivm, " --- io %d = %p, loop counter %d\n",
1798 io_itr, io, lp_loop.counter);
1799 #endif
1800
1801 true_index_array = lp_build_broadcast_scalar(&blduivec, lp_loop.counter);
1802 true_index_array = LLVMBuildAdd(builder, true_index_array, ind_vec, "");
1803
1804 /*
1805 * Limit indices to fetch_max, otherwise might try to access indices
1806 * beyond index buffer (or rather vsplit elt buffer) size.
1807 * Could probably safely (?) skip this for non-indexed draws and
1808 * simplify things minimally (by removing it could combine the ind_vec
1809 * and start_vec adds). I think the only effect for non-indexed draws will
1810 * be that for the invalid elements they will be all fetched from the
1811 * same location as the last valid one, but noone should really care.
1812 */
1813 true_index_array = lp_build_min(&blduivec, true_index_array, fetch_max);
1814
1815 index_store = lp_build_alloca_undef(gallivm, blduivec.vec_type, "index_store");
1816
1817 lp_build_if(&if_ctx, gallivm, have_elts);
1818 {
1819 /*
1820 * Note: you'd expect some comparison/clamp against fetch_elt_max
1821 * here.
1822 * There used to be one here but it was incorrect: overflow was
1823 * detected if index > fetch_elt_max - but the correct condition
1824 * would be index >= fetch_elt_max (since this is just size of elts
1825 * buffer / element size).
1826 * Using the correct condition however will cause failures - due to
1827 * vsplit/vcache code which rebases indices. So, as an example, if
1828 * fetch_elt_max is just 1 and fetch_count 2, vsplit cache will
1829 * replace all invalid indices with 0 - which in case of elt_bias
1830 * not being zero will get a different fetch index than the valid
1831 * index 0. So, just rely on vsplit code preventing out-of-bounds
1832 * fetches. This is also why it's safe to do elts fetch even if there
1833 * was no index buffer bound - the real buffer is never seen here, at
1834 * least not if there are index buffer overflows...
1835 */
1836
1837 /*
1838 * XXX should not have to do this, as scale can be handled
1839 * natively by loads (hits asserts though).
1840 */
1841 tmp = lp_build_shl_imm(&blduivec, true_index_array, 2);
1842 fetch_elts = LLVMBuildBitCast(builder, fetch_elts,
1843 LLVMPointerType(LLVMInt8TypeInContext(context),
1844 0), "");
1845 tmp = lp_build_gather(gallivm, vs_type.length,
1846 32, bld.type, TRUE,
1847 fetch_elts, tmp, FALSE);
1848 LLVMBuildStore(builder, tmp, index_store);
1849 }
1850 lp_build_else(&if_ctx);
1851 {
1852 tmp = LLVMBuildAdd(builder, true_index_array, start_vec, "");
1853 LLVMBuildStore(builder, tmp, index_store);
1854 }
1855 lp_build_endif(&if_ctx);
1856
1857 true_index_array = LLVMBuildLoad(builder, index_store, "");
1858
1859 for (j = 0; j < key->nr_vertex_elements; ++j) {
1860 struct pipe_vertex_element *velem = &key->vertex_element[j];
1861 const struct util_format_description *format_desc =
1862 util_format_description(velem->src_format);
1863
1864 if (format_desc->format == PIPE_FORMAT_NONE) {
1865 for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
1866 inputs[j][i] = lp_build_zero(gallivm, vs_type);
1867 }
1868 }
1869 else if (velem->instance_divisor) {
1870 fetch_instanced(gallivm, format_desc, vs_type,
1871 vb_stride[j], map_ptr[j],
1872 buffer_size_adj[j],
1873 inputs[j], instance_index[j]);
1874 }
1875 else {
1876 fetch_vector(gallivm, format_desc, vs_type,
1877 vb_stride[j], map_ptr[j],
1878 buffer_size_adj[j],
1879 inputs[j], true_index_array);
1880 }
1881 }
1882
1883 /* In the paths with elts vertex id has to be unaffected by the
1884 * index bias and because indices inside our elements array have
1885 * already had index bias applied we need to subtract it here to
1886 * get back to the original index.
1887 * in the linear paths vertex id has to be unaffected by the
1888 * original start index and because we abuse the 'start' variable
1889 * to either represent the actual start index or the index at which
1890 * the primitive was split (we split rendering into chunks of at
1891 * most 4095-vertices) we need to back out the original start
1892 * index out of our vertex id here.
1893 */
1894 system_values.basevertex = lp_build_broadcast_scalar(&blduivec,
1895 vertex_id_offset);
1896 system_values.vertex_id = true_index_array;
1897 system_values.vertex_id_nobase = LLVMBuildSub(builder, true_index_array,
1898 system_values.basevertex, "");
1899
1900 ptr_aos = (const LLVMValueRef (*)[TGSI_NUM_CHANNELS]) inputs;
1901 generate_vs(variant,
1902 builder,
1903 vs_type,
1904 outputs,
1905 ptr_aos,
1906 &system_values,
1907 context_ptr,
1908 sampler,
1909 key->clamp_vertex_color);
1910
1911 if (pos != -1 && cv != -1) {
1912 /* store original positions in clip before further manipulation */
1913 store_clip(gallivm, vs_type, io, outputs, pos);
1914
1915 /* do cliptest */
1916 if (enable_cliptest) {
1917 LLVMValueRef temp = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
1918 /* allocate clipmask, assign it integer type */
1919 clipmask = generate_clipmask(llvm,
1920 gallivm,
1921 vs_type,
1922 outputs,
1923 key,
1924 context_ptr, &have_clipdist);
1925 temp = LLVMBuildOr(builder, clipmask, temp, "");
1926 /* store temporary clipping boolean value */
1927 LLVMBuildStore(builder, temp, clipmask_bool_ptr);
1928 }
1929 else {
1930 clipmask = blduivec.zero;
1931 }
1932
1933 /* do viewport mapping */
1934 if (!bypass_viewport) {
1935 generate_viewport(variant, builder, vs_type, outputs, context_ptr);
1936 }
1937 }
1938 else {
1939 clipmask = blduivec.zero;
1940 }
1941
1942 /* store clipmask in vertex header,
1943 * original positions in clip
1944 * and transformed positions in data
1945 */
1946 convert_to_aos(gallivm, io, NULL, outputs, clipmask,
1947 vs_info->num_outputs, vs_type,
1948 enable_cliptest && key->need_edgeflags);
1949 }
1950 lp_build_loop_end_cond(&lp_loop, count, step, LLVMIntUGE);
1951
1952 sampler->destroy(sampler);
1953
1954 /* return clipping boolean value for function */
1955 ret = clipmask_booli8(gallivm, vs_type, clipmask_bool_ptr,
1956 enable_cliptest && key->need_edgeflags);
1957
1958 LLVMBuildRet(builder, ret);
1959
1960 gallivm_verify_function(gallivm, variant_func);
1961 }
1962
1963
1964 struct draw_llvm_variant_key *
draw_llvm_make_variant_key(struct draw_llvm * llvm,char * store)1965 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
1966 {
1967 unsigned i;
1968 struct draw_llvm_variant_key *key;
1969 struct draw_sampler_static_state *draw_sampler;
1970
1971 key = (struct draw_llvm_variant_key *)store;
1972
1973 memset(key, 0, offsetof(struct draw_llvm_variant_key, vertex_element[0]));
1974
1975 key->clamp_vertex_color = llvm->draw->rasterizer->clamp_vertex_color; /**/
1976
1977 /* will have to rig this up properly later */
1978 key->clip_xy = llvm->draw->clip_xy;
1979 key->clip_z = llvm->draw->clip_z;
1980 key->clip_user = llvm->draw->clip_user;
1981 key->bypass_viewport = llvm->draw->bypass_viewport;
1982 key->clip_halfz = llvm->draw->rasterizer->clip_halfz;
1983 /* XXX assumes edgeflag output not at 0 */
1984 key->need_edgeflags = (llvm->draw->vs.edgeflag_output ? TRUE : FALSE);
1985 key->ucp_enable = llvm->draw->rasterizer->clip_plane_enable;
1986 key->has_gs = llvm->draw->gs.geometry_shader != NULL;
1987 key->num_outputs = draw_total_vs_outputs(llvm->draw);
1988
1989 /* All variants of this shader will have the same value for
1990 * nr_samplers. Not yet trying to compact away holes in the
1991 * sampler array.
1992 */
1993 key->nr_samplers = llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
1994 if (llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
1995 key->nr_sampler_views =
1996 llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
1997 }
1998 else {
1999 key->nr_sampler_views = key->nr_samplers;
2000 }
2001
2002 /* Presumably all variants of the shader should have the same
2003 * number of vertex elements - ie the number of shader inputs.
2004 * NOTE: we NEED to store the needed number of needed inputs
2005 * here, not the number of provided elements to match keysize
2006 * (and the offset of sampler state in the key).
2007 * If we have excess number of vertex elements, this is valid,
2008 * but the excess ones don't matter.
2009 * If we don't have enough vertex elements (which looks not really
2010 * valid but we'll handle it gracefully) fill out missing ones with
2011 * zero (we'll recognize these later by PIPE_FORMAT_NONE).
2012 */
2013 key->nr_vertex_elements =
2014 llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_INPUT] + 1;
2015
2016 if (llvm->draw->pt.nr_vertex_elements < key->nr_vertex_elements) {
2017 debug_printf("draw: vs with %d inputs but only have %d vertex elements\n",
2018 key->nr_vertex_elements, llvm->draw->pt.nr_vertex_elements);
2019 memset(key->vertex_element, 0,
2020 sizeof(struct pipe_vertex_element) * key->nr_vertex_elements);
2021 }
2022 memcpy(key->vertex_element,
2023 llvm->draw->pt.vertex_element,
2024 sizeof(struct pipe_vertex_element) *
2025 MIN2(key->nr_vertex_elements, llvm->draw->pt.nr_vertex_elements));
2026
2027 draw_sampler = draw_llvm_variant_key_samplers(key);
2028 memset(draw_sampler, 0,
2029 MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
2030
2031 for (i = 0 ; i < key->nr_samplers; i++) {
2032 lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
2033 llvm->draw->samplers[PIPE_SHADER_VERTEX][i]);
2034 }
2035 for (i = 0 ; i < key->nr_sampler_views; i++) {
2036 lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
2037 llvm->draw->sampler_views[PIPE_SHADER_VERTEX][i]);
2038 }
2039
2040 return key;
2041 }
2042
2043
2044 void
draw_llvm_dump_variant_key(struct draw_llvm_variant_key * key)2045 draw_llvm_dump_variant_key(struct draw_llvm_variant_key *key)
2046 {
2047 unsigned i;
2048 struct draw_sampler_static_state *sampler = draw_llvm_variant_key_samplers(key);
2049
2050 debug_printf("clamp_vertex_color = %u\n", key->clamp_vertex_color);
2051 debug_printf("clip_xy = %u\n", key->clip_xy);
2052 debug_printf("clip_z = %u\n", key->clip_z);
2053 debug_printf("clip_user = %u\n", key->clip_user);
2054 debug_printf("bypass_viewport = %u\n", key->bypass_viewport);
2055 debug_printf("clip_halfz = %u\n", key->clip_halfz);
2056 debug_printf("need_edgeflags = %u\n", key->need_edgeflags);
2057 debug_printf("has_gs = %u\n", key->has_gs);
2058 debug_printf("ucp_enable = %u\n", key->ucp_enable);
2059
2060 for (i = 0 ; i < key->nr_vertex_elements; i++) {
2061 debug_printf("vertex_element[%i].src_offset = %u\n", i, key->vertex_element[i].src_offset);
2062 debug_printf("vertex_element[%i].instance_divisor = %u\n", i, key->vertex_element[i].instance_divisor);
2063 debug_printf("vertex_element[%i].vertex_buffer_index = %u\n", i, key->vertex_element[i].vertex_buffer_index);
2064 debug_printf("vertex_element[%i].src_format = %s\n", i, util_format_name(key->vertex_element[i].src_format));
2065 }
2066
2067 for (i = 0 ; i < key->nr_sampler_views; i++) {
2068 debug_printf("sampler[%i].src_format = %s\n", i, util_format_name(sampler[i].texture_state.format));
2069 }
2070 }
2071
2072
2073 void
draw_llvm_set_mapped_texture(struct draw_context * draw,enum pipe_shader_type shader_stage,unsigned sview_idx,uint32_t width,uint32_t height,uint32_t depth,uint32_t first_level,uint32_t last_level,const void * base_ptr,uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS])2074 draw_llvm_set_mapped_texture(struct draw_context *draw,
2075 enum pipe_shader_type shader_stage,
2076 unsigned sview_idx,
2077 uint32_t width, uint32_t height, uint32_t depth,
2078 uint32_t first_level, uint32_t last_level,
2079 const void *base_ptr,
2080 uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
2081 uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
2082 uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS])
2083 {
2084 unsigned j;
2085 struct draw_jit_texture *jit_tex;
2086
2087 assert(shader_stage == PIPE_SHADER_VERTEX ||
2088 shader_stage == PIPE_SHADER_GEOMETRY);
2089
2090 if (shader_stage == PIPE_SHADER_VERTEX) {
2091 assert(sview_idx < ARRAY_SIZE(draw->llvm->jit_context.textures));
2092
2093 jit_tex = &draw->llvm->jit_context.textures[sview_idx];
2094 } else if (shader_stage == PIPE_SHADER_GEOMETRY) {
2095 assert(sview_idx < ARRAY_SIZE(draw->llvm->gs_jit_context.textures));
2096
2097 jit_tex = &draw->llvm->gs_jit_context.textures[sview_idx];
2098 } else {
2099 assert(0);
2100 return;
2101 }
2102
2103 jit_tex->width = width;
2104 jit_tex->height = height;
2105 jit_tex->depth = depth;
2106 jit_tex->first_level = first_level;
2107 jit_tex->last_level = last_level;
2108 jit_tex->base = base_ptr;
2109
2110 for (j = first_level; j <= last_level; j++) {
2111 jit_tex->mip_offsets[j] = mip_offsets[j];
2112 jit_tex->row_stride[j] = row_stride[j];
2113 jit_tex->img_stride[j] = img_stride[j];
2114 }
2115 }
2116
2117
2118 void
draw_llvm_set_sampler_state(struct draw_context * draw,enum pipe_shader_type shader_type)2119 draw_llvm_set_sampler_state(struct draw_context *draw,
2120 enum pipe_shader_type shader_type)
2121 {
2122 unsigned i;
2123
2124 if (shader_type == PIPE_SHADER_VERTEX) {
2125 for (i = 0; i < draw->num_samplers[PIPE_SHADER_VERTEX]; i++) {
2126 struct draw_jit_sampler *jit_sam = &draw->llvm->jit_context.samplers[i];
2127
2128 if (draw->samplers[PIPE_SHADER_VERTEX][i]) {
2129 const struct pipe_sampler_state *s
2130 = draw->samplers[PIPE_SHADER_VERTEX][i];
2131 jit_sam->min_lod = s->min_lod;
2132 jit_sam->max_lod = s->max_lod;
2133 jit_sam->lod_bias = s->lod_bias;
2134 COPY_4V(jit_sam->border_color, s->border_color.f);
2135 }
2136 }
2137 } else if (shader_type == PIPE_SHADER_GEOMETRY) {
2138 for (i = 0; i < draw->num_samplers[PIPE_SHADER_GEOMETRY]; i++) {
2139 struct draw_jit_sampler *jit_sam = &draw->llvm->gs_jit_context.samplers[i];
2140
2141 if (draw->samplers[PIPE_SHADER_GEOMETRY][i]) {
2142 const struct pipe_sampler_state *s
2143 = draw->samplers[PIPE_SHADER_GEOMETRY][i];
2144 jit_sam->min_lod = s->min_lod;
2145 jit_sam->max_lod = s->max_lod;
2146 jit_sam->lod_bias = s->lod_bias;
2147 COPY_4V(jit_sam->border_color, s->border_color.f);
2148 }
2149 }
2150 }
2151 }
2152
2153
2154 void
draw_llvm_destroy_variant(struct draw_llvm_variant * variant)2155 draw_llvm_destroy_variant(struct draw_llvm_variant *variant)
2156 {
2157 struct draw_llvm *llvm = variant->llvm;
2158
2159 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
2160 debug_printf("Deleting VS variant: %u vs variants,\t%u total variants\n",
2161 variant->shader->variants_cached, llvm->nr_variants);
2162 }
2163
2164 gallivm_destroy(variant->gallivm);
2165
2166 remove_from_list(&variant->list_item_local);
2167 variant->shader->variants_cached--;
2168 remove_from_list(&variant->list_item_global);
2169 llvm->nr_variants--;
2170 FREE(variant);
2171 }
2172
2173
2174 /**
2175 * Create LLVM types for various structures.
2176 */
2177 static void
create_gs_jit_types(struct draw_gs_llvm_variant * var)2178 create_gs_jit_types(struct draw_gs_llvm_variant *var)
2179 {
2180 struct gallivm_state *gallivm = var->gallivm;
2181 LLVMTypeRef texture_type, sampler_type, context_type;
2182
2183 texture_type = create_jit_texture_type(gallivm, "texture");
2184 sampler_type = create_jit_sampler_type(gallivm, "sampler");
2185
2186 context_type = create_gs_jit_context_type(gallivm,
2187 var->shader->base.vector_length,
2188 texture_type, sampler_type,
2189 "draw_gs_jit_context");
2190 var->context_ptr_type = LLVMPointerType(context_type, 0);
2191
2192 var->input_array_type = create_gs_jit_input_type(gallivm);
2193 }
2194
2195 static LLVMTypeRef
get_gs_context_ptr_type(struct draw_gs_llvm_variant * variant)2196 get_gs_context_ptr_type(struct draw_gs_llvm_variant *variant)
2197 {
2198 if (!variant->context_ptr_type)
2199 create_gs_jit_types(variant);
2200 return variant->context_ptr_type;
2201 }
2202
2203 static LLVMValueRef
generate_mask_value(struct draw_gs_llvm_variant * variant,struct lp_type gs_type)2204 generate_mask_value(struct draw_gs_llvm_variant *variant,
2205 struct lp_type gs_type)
2206 {
2207 struct gallivm_state *gallivm = variant->gallivm;
2208 LLVMBuilderRef builder = gallivm->builder;
2209 struct lp_type mask_type = lp_int_type(gs_type);
2210 LLVMValueRef num_prims;
2211 LLVMValueRef mask_val = lp_build_const_vec(gallivm, mask_type, 0);
2212 unsigned i;
2213
2214 num_prims = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, mask_type),
2215 variant->num_prims);
2216 for (i = 0; i < gs_type.length; i++) {
2217 LLVMValueRef idx = lp_build_const_int32(gallivm, i);
2218 mask_val = LLVMBuildInsertElement(builder, mask_val, idx, idx, "");
2219 }
2220 mask_val = lp_build_compare(gallivm, mask_type,
2221 PIPE_FUNC_GREATER, num_prims, mask_val);
2222
2223 return mask_val;
2224 }
2225
2226 static void
draw_gs_llvm_generate(struct draw_llvm * llvm,struct draw_gs_llvm_variant * variant)2227 draw_gs_llvm_generate(struct draw_llvm *llvm,
2228 struct draw_gs_llvm_variant *variant)
2229 {
2230 struct gallivm_state *gallivm = variant->gallivm;
2231 LLVMContextRef context = gallivm->context;
2232 LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
2233 LLVMTypeRef arg_types[7];
2234 LLVMTypeRef func_type;
2235 LLVMValueRef variant_func;
2236 LLVMValueRef context_ptr;
2237 LLVMValueRef prim_id_ptr;
2238 LLVMBasicBlockRef block;
2239 LLVMBuilderRef builder;
2240 LLVMValueRef io_ptr, input_array, num_prims, mask_val;
2241 struct lp_build_sampler_soa *sampler = 0;
2242 struct lp_build_context bld;
2243 struct lp_bld_tgsi_system_values system_values;
2244 char func_name[64];
2245 struct lp_type gs_type;
2246 unsigned i;
2247 struct draw_gs_llvm_iface gs_iface;
2248 const struct tgsi_token *tokens = variant->shader->base.state.tokens;
2249 LLVMValueRef consts_ptr, num_consts_ptr;
2250 LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
2251 struct lp_build_mask_context mask;
2252 const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
2253 unsigned vector_length = variant->shader->base.vector_length;
2254
2255 memset(&system_values, 0, sizeof(system_values));
2256
2257 util_snprintf(func_name, sizeof(func_name), "draw_llvm_gs_variant%u",
2258 variant->shader->variants_cached);
2259
2260 assert(variant->vertex_header_ptr_type);
2261
2262 arg_types[0] = get_gs_context_ptr_type(variant); /* context */
2263 arg_types[1] = variant->input_array_type; /* input */
2264 arg_types[2] = variant->vertex_header_ptr_type; /* vertex_header */
2265 arg_types[3] = int32_type; /* num_prims */
2266 arg_types[4] = int32_type; /* instance_id */
2267 arg_types[5] = LLVMPointerType(
2268 LLVMVectorType(int32_type, vector_length), 0); /* prim_id_ptr */
2269 arg_types[6] = int32_type;
2270
2271 func_type = LLVMFunctionType(int32_type, arg_types, ARRAY_SIZE(arg_types), 0);
2272
2273 variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
2274
2275 variant->function = variant_func;
2276
2277 LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
2278
2279 for (i = 0; i < ARRAY_SIZE(arg_types); ++i)
2280 if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
2281 lp_add_function_attr(variant_func, i + 1, LP_FUNC_ATTR_NOALIAS);
2282
2283 context_ptr = LLVMGetParam(variant_func, 0);
2284 input_array = LLVMGetParam(variant_func, 1);
2285 io_ptr = LLVMGetParam(variant_func, 2);
2286 num_prims = LLVMGetParam(variant_func, 3);
2287 system_values.instance_id = LLVMGetParam(variant_func, 4);
2288 prim_id_ptr = LLVMGetParam(variant_func, 5);
2289 system_values.invocation_id = LLVMGetParam(variant_func, 6);
2290
2291 lp_build_name(context_ptr, "context");
2292 lp_build_name(input_array, "input");
2293 lp_build_name(io_ptr, "io");
2294 lp_build_name(num_prims, "num_prims");
2295 lp_build_name(system_values.instance_id, "instance_id");
2296 lp_build_name(prim_id_ptr, "prim_id_ptr");
2297 lp_build_name(system_values.invocation_id, "invocation_id");
2298
2299 variant->context_ptr = context_ptr;
2300 variant->io_ptr = io_ptr;
2301 variant->num_prims = num_prims;
2302
2303 gs_iface.base.fetch_input = draw_gs_llvm_fetch_input;
2304 gs_iface.base.emit_vertex = draw_gs_llvm_emit_vertex;
2305 gs_iface.base.end_primitive = draw_gs_llvm_end_primitive;
2306 gs_iface.base.gs_epilogue = draw_gs_llvm_epilogue;
2307 gs_iface.input = input_array;
2308 gs_iface.variant = variant;
2309
2310 /*
2311 * Function body
2312 */
2313
2314 block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
2315 builder = gallivm->builder;
2316 LLVMPositionBuilderAtEnd(builder, block);
2317
2318 lp_build_context_init(&bld, gallivm, lp_type_int(32));
2319
2320 memset(&gs_type, 0, sizeof gs_type);
2321 gs_type.floating = TRUE; /* floating point values */
2322 gs_type.sign = TRUE; /* values are signed */
2323 gs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
2324 gs_type.width = 32; /* 32-bit float */
2325 gs_type.length = vector_length;
2326
2327 consts_ptr = draw_gs_jit_context_constants(variant->gallivm, context_ptr);
2328 num_consts_ptr =
2329 draw_gs_jit_context_num_constants(variant->gallivm, context_ptr);
2330
2331 /* code generated texture sampling */
2332 sampler = draw_llvm_sampler_soa_create(variant->key.samplers);
2333
2334 mask_val = generate_mask_value(variant, gs_type);
2335 lp_build_mask_begin(&mask, gallivm, gs_type, mask_val);
2336
2337 if (gs_info->uses_primid) {
2338 system_values.prim_id = LLVMBuildLoad(builder, prim_id_ptr, "prim_id");
2339 }
2340
2341 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
2342 tgsi_dump(tokens, 0);
2343 draw_gs_llvm_dump_variant_key(&variant->key);
2344 }
2345
2346 lp_build_tgsi_soa(variant->gallivm,
2347 tokens,
2348 gs_type,
2349 &mask,
2350 consts_ptr,
2351 num_consts_ptr,
2352 &system_values,
2353 NULL,
2354 outputs,
2355 context_ptr,
2356 NULL,
2357 sampler,
2358 &llvm->draw->gs.geometry_shader->info,
2359 (const struct lp_build_tgsi_gs_iface *)&gs_iface);
2360
2361 sampler->destroy(sampler);
2362
2363 lp_build_mask_end(&mask);
2364
2365 LLVMBuildRet(builder, lp_build_zero(gallivm, lp_type_uint(32)));
2366
2367 gallivm_verify_function(gallivm, variant_func);
2368 }
2369
2370
2371 struct draw_gs_llvm_variant *
draw_gs_llvm_create_variant(struct draw_llvm * llvm,unsigned num_outputs,const struct draw_gs_llvm_variant_key * key)2372 draw_gs_llvm_create_variant(struct draw_llvm *llvm,
2373 unsigned num_outputs,
2374 const struct draw_gs_llvm_variant_key *key)
2375 {
2376 struct draw_gs_llvm_variant *variant;
2377 struct llvm_geometry_shader *shader =
2378 llvm_geometry_shader(llvm->draw->gs.geometry_shader);
2379 LLVMTypeRef vertex_header;
2380 char module_name[64];
2381
2382 variant = MALLOC(sizeof *variant +
2383 shader->variant_key_size -
2384 sizeof variant->key);
2385 if (!variant)
2386 return NULL;
2387
2388 variant->llvm = llvm;
2389 variant->shader = shader;
2390
2391 util_snprintf(module_name, sizeof(module_name), "draw_llvm_gs_variant%u",
2392 variant->shader->variants_cached);
2393
2394 variant->gallivm = gallivm_create(module_name, llvm->context);
2395
2396 create_gs_jit_types(variant);
2397
2398 memcpy(&variant->key, key, shader->variant_key_size);
2399
2400 vertex_header = create_jit_vertex_header(variant->gallivm, num_outputs);
2401
2402 variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
2403
2404 draw_gs_llvm_generate(llvm, variant);
2405
2406 gallivm_compile_module(variant->gallivm);
2407
2408 variant->jit_func = (draw_gs_jit_func)
2409 gallivm_jit_function(variant->gallivm, variant->function);
2410
2411 gallivm_free_ir(variant->gallivm);
2412
2413 variant->list_item_global.base = variant;
2414 variant->list_item_local.base = variant;
2415 /*variant->no = */shader->variants_created++;
2416 variant->list_item_global.base = variant;
2417
2418 return variant;
2419 }
2420
2421 void
draw_gs_llvm_destroy_variant(struct draw_gs_llvm_variant * variant)2422 draw_gs_llvm_destroy_variant(struct draw_gs_llvm_variant *variant)
2423 {
2424 struct draw_llvm *llvm = variant->llvm;
2425
2426 if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
2427 debug_printf("Deleting GS variant: %u gs variants,\t%u total variants\n",
2428 variant->shader->variants_cached, llvm->nr_gs_variants);
2429 }
2430
2431 gallivm_destroy(variant->gallivm);
2432
2433 remove_from_list(&variant->list_item_local);
2434 variant->shader->variants_cached--;
2435 remove_from_list(&variant->list_item_global);
2436 llvm->nr_gs_variants--;
2437 FREE(variant);
2438 }
2439
2440 struct draw_gs_llvm_variant_key *
draw_gs_llvm_make_variant_key(struct draw_llvm * llvm,char * store)2441 draw_gs_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
2442 {
2443 unsigned i;
2444 struct draw_gs_llvm_variant_key *key;
2445 struct draw_sampler_static_state *draw_sampler;
2446
2447 key = (struct draw_gs_llvm_variant_key *)store;
2448
2449 memset(key, 0, offsetof(struct draw_gs_llvm_variant_key, samplers[0]));
2450
2451 key->num_outputs = draw_total_gs_outputs(llvm->draw);
2452
2453 /* All variants of this shader will have the same value for
2454 * nr_samplers. Not yet trying to compact away holes in the
2455 * sampler array.
2456 */
2457 key->nr_samplers = llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
2458 if (llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
2459 key->nr_sampler_views =
2460 llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
2461 }
2462 else {
2463 key->nr_sampler_views = key->nr_samplers;
2464 }
2465
2466 draw_sampler = key->samplers;
2467
2468 memset(draw_sampler, 0, MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
2469
2470 for (i = 0 ; i < key->nr_samplers; i++) {
2471 lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
2472 llvm->draw->samplers[PIPE_SHADER_GEOMETRY][i]);
2473 }
2474 for (i = 0 ; i < key->nr_sampler_views; i++) {
2475 lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
2476 llvm->draw->sampler_views[PIPE_SHADER_GEOMETRY][i]);
2477 }
2478
2479 return key;
2480 }
2481
2482 void
draw_gs_llvm_dump_variant_key(struct draw_gs_llvm_variant_key * key)2483 draw_gs_llvm_dump_variant_key(struct draw_gs_llvm_variant_key *key)
2484 {
2485 unsigned i;
2486 struct draw_sampler_static_state *sampler = key->samplers;
2487
2488 for (i = 0 ; i < key->nr_sampler_views; i++) {
2489 debug_printf("sampler[%i].src_format = %s\n", i,
2490 util_format_name(sampler[i].texture_state.format));
2491 }
2492 }
2493