1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
|
/**************************************************************************
*
* Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* Interface between 'draw' module's output and the llvmpipe rasterizer/setup
* code. When the 'draw' module has finished filling a vertex buffer, the
* draw_arrays() functions below will be called. Loop over the vertices and
* call the point/line/tri setup functions.
*
* Authors
* Brian Paul
*/
#include "lp_setup_context.h"
#include "lp_context.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_vertex.h"
#include "util/u_memory.h"
#define LP_MAX_VBUF_INDEXES 1024
#define LP_MAX_VBUF_SIZE 4096
/** cast wrapper */
static struct lp_setup_context *
lp_setup_context(struct vbuf_render *vbr)
{
return (struct lp_setup_context *) vbr;
}
static const struct vertex_info *
lp_setup_get_vertex_info(struct vbuf_render *vbr)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
/* Vertex size/info depends on the latest state.
* The draw module may have issued additional state-change commands.
*/
lp_setup_update_state(setup, FALSE);
return setup->vertex_info;
}
static boolean
lp_setup_allocate_vertices(struct vbuf_render *vbr,
ushort vertex_size, ushort nr_vertices)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
unsigned size = vertex_size * nr_vertices;
if (setup->vertex_buffer_size < size) {
align_free(setup->vertex_buffer);
setup->vertex_buffer = align_malloc(size, 16);
setup->vertex_buffer_size = size;
}
setup->vertex_size = vertex_size;
setup->nr_vertices = nr_vertices;
return setup->vertex_buffer != NULL;
}
static void
lp_setup_release_vertices(struct vbuf_render *vbr)
{
/* keep the old allocation for next time */
}
static void *
lp_setup_map_vertices(struct vbuf_render *vbr)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
return setup->vertex_buffer;
}
static void
lp_setup_unmap_vertices(struct vbuf_render *vbr,
ushort min_index,
ushort max_index )
{
struct lp_setup_context *setup = lp_setup_context(vbr);
assert( setup->vertex_buffer_size >= (max_index+1) * setup->vertex_size );
/* do nothing */
}
static void
lp_setup_set_primitive(struct vbuf_render *vbr, unsigned prim)
{
lp_setup_context(vbr)->prim = prim;
}
typedef const float (*const_float4_ptr)[4];
static inline const_float4_ptr get_vert( const void *vertex_buffer,
int index,
int stride )
{
return (const_float4_ptr)((char *)vertex_buffer + index * stride);
}
/**
* draw elements / indexed primitives
*/
static void
lp_setup_draw_elements(struct vbuf_render *vbr, const ushort *indices, uint nr)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
const unsigned stride = setup->vertex_info->size * sizeof(float);
const void *vertex_buffer = setup->vertex_buffer;
const boolean flatshade_first = setup->flatshade_first;
unsigned i;
assert(setup->setup.variant);
if (!lp_setup_update_state(setup, TRUE))
return;
switch (setup->prim) {
case PIPE_PRIM_POINTS:
for (i = 0; i < nr; i++) {
setup->point( setup,
get_vert(vertex_buffer, indices[i-0], stride) );
}
break;
case PIPE_PRIM_LINES:
for (i = 1; i < nr; i += 2) {
setup->line( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
break;
case PIPE_PRIM_LINE_STRIP:
for (i = 1; i < nr; i ++) {
setup->line( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
break;
case PIPE_PRIM_LINE_LOOP:
for (i = 1; i < nr; i ++) {
setup->line( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
if (nr) {
setup->line( setup,
get_vert(vertex_buffer, indices[nr-1], stride),
get_vert(vertex_buffer, indices[0], stride) );
}
break;
case PIPE_PRIM_TRIANGLES:
for (i = 2; i < nr; i += 3) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
break;
case PIPE_PRIM_TRIANGLE_STRIP:
if (flatshade_first) {
for (i = 2; i < nr; i += 1) {
/* emit first triangle vertex as first triangle vertex */
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
get_vert(vertex_buffer, indices[i-(i&1)], stride) );
}
}
else {
for (i = 2; i < nr; i += 1) {
/* emit last triangle vertex as last triangle vertex */
setup->triangle( setup,
get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
}
break;
case PIPE_PRIM_TRIANGLE_FAN:
if (flatshade_first) {
for (i = 2; i < nr; i += 1) {
/* emit first non-spoke vertex as first vertex */
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[0], stride) );
}
}
else {
for (i = 2; i < nr; i += 1) {
/* emit last non-spoke vertex as last vertex */
setup->triangle( setup,
get_vert(vertex_buffer, indices[0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
}
break;
case PIPE_PRIM_QUADS:
/* GL quads don't follow provoking vertex convention */
if (flatshade_first) {
/* emit last quad vertex as first triangle vertex */
for (i = 3; i < nr; i += 4) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride) );
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-1], stride) );
}
}
else {
/* emit last quad vertex as last triangle vertex */
for (i = 3; i < nr; i += 4) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
}
break;
case PIPE_PRIM_QUAD_STRIP:
/* GL quad strips don't follow provoking vertex convention */
if (flatshade_first) {
/* emit last quad vertex as first triangle vertex */
for (i = 3; i < nr; i += 2) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride) );
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-3], stride) );
}
}
else {
/* emit last quad vertex as last triangle vertex */
for (i = 3; i < nr; i += 2) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-2], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-3], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
}
break;
case PIPE_PRIM_POLYGON:
/* Almost same as tri fan but the _first_ vertex specifies the flat
* shading color.
*/
if (flatshade_first) {
/* emit first polygon vertex as first triangle vertex */
for (i = 2; i < nr; i += 1) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[0], stride),
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride) );
}
}
else {
/* emit first polygon vertex as last triangle vertex */
for (i = 2; i < nr; i += 1) {
setup->triangle( setup,
get_vert(vertex_buffer, indices[i-1], stride),
get_vert(vertex_buffer, indices[i-0], stride),
get_vert(vertex_buffer, indices[0], stride) );
}
}
break;
default:
assert(0);
}
}
/**
* This function is hit when the draw module is working in pass-through mode.
* It's up to us to convert the vertex array into point/line/tri prims.
*/
static void
lp_setup_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
const unsigned stride = setup->vertex_info->size * sizeof(float);
const void *vertex_buffer =
(void *) get_vert(setup->vertex_buffer, start, stride);
const boolean flatshade_first = setup->flatshade_first;
unsigned i;
if (!lp_setup_update_state(setup, TRUE))
return;
switch (setup->prim) {
case PIPE_PRIM_POINTS:
for (i = 0; i < nr; i++) {
setup->point( setup,
get_vert(vertex_buffer, i-0, stride) );
}
break;
case PIPE_PRIM_LINES:
for (i = 1; i < nr; i += 2) {
setup->line( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
break;
case PIPE_PRIM_LINE_STRIP:
for (i = 1; i < nr; i ++) {
setup->line( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
break;
case PIPE_PRIM_LINE_LOOP:
for (i = 1; i < nr; i ++) {
setup->line( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
if (nr) {
setup->line( setup,
get_vert(vertex_buffer, nr-1, stride),
get_vert(vertex_buffer, 0, stride) );
}
break;
case PIPE_PRIM_TRIANGLES:
for (i = 2; i < nr; i += 3) {
setup->triangle( setup,
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
break;
case PIPE_PRIM_TRIANGLE_STRIP:
if (flatshade_first) {
for (i = 2; i < nr; i++) {
/* emit first triangle vertex as first triangle vertex */
setup->triangle( setup,
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i+(i&1)-1, stride),
get_vert(vertex_buffer, i-(i&1), stride) );
}
}
else {
for (i = 2; i < nr; i++) {
/* emit last triangle vertex as last triangle vertex */
setup->triangle( setup,
get_vert(vertex_buffer, i+(i&1)-2, stride),
get_vert(vertex_buffer, i-(i&1)-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
}
break;
case PIPE_PRIM_TRIANGLE_FAN:
if (flatshade_first) {
for (i = 2; i < nr; i += 1) {
/* emit first non-spoke vertex as first vertex */
setup->triangle( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, 0, stride) );
}
}
else {
for (i = 2; i < nr; i += 1) {
/* emit last non-spoke vertex as last vertex */
setup->triangle( setup,
get_vert(vertex_buffer, 0, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
}
break;
case PIPE_PRIM_QUADS:
/* GL quads don't follow provoking vertex convention */
if (flatshade_first) {
/* emit last quad vertex as first triangle vertex */
for (i = 3; i < nr; i += 4) {
setup->triangle( setup,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride) );
setup->triangle( setup,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-1, stride) );
}
}
else {
/* emit last quad vertex as last triangle vertex */
for (i = 3; i < nr; i += 4) {
setup->triangle( setup,
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-0, stride) );
setup->triangle( setup,
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
}
break;
case PIPE_PRIM_QUAD_STRIP:
/* GL quad strips don't follow provoking vertex convention */
if (flatshade_first) {
/* emit last quad vertex as first triangle vertex */
for (i = 3; i < nr; i += 2) {
setup->triangle( setup,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride) );
setup->triangle( setup,
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-3, stride) );
}
}
else {
/* emit last quad vertex as last triangle vertex */
for (i = 3; i < nr; i += 2) {
setup->triangle( setup,
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-2, stride),
get_vert(vertex_buffer, i-0, stride) );
setup->triangle( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-3, stride),
get_vert(vertex_buffer, i-0, stride) );
}
}
break;
case PIPE_PRIM_POLYGON:
/* Almost same as tri fan but the _first_ vertex specifies the flat
* shading color.
*/
if (flatshade_first) {
/* emit first polygon vertex as first triangle vertex */
for (i = 2; i < nr; i += 1) {
setup->triangle( setup,
get_vert(vertex_buffer, 0, stride),
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride) );
}
}
else {
/* emit first polygon vertex as last triangle vertex */
for (i = 2; i < nr; i += 1) {
setup->triangle( setup,
get_vert(vertex_buffer, i-1, stride),
get_vert(vertex_buffer, i-0, stride),
get_vert(vertex_buffer, 0, stride) );
}
}
break;
default:
assert(0);
}
}
static void
lp_setup_vbuf_destroy(struct vbuf_render *vbr)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
if (setup->vertex_buffer) {
align_free(setup->vertex_buffer);
setup->vertex_buffer = NULL;
}
lp_setup_destroy(setup);
}
/*
* FIXME: it is unclear if primitives_storage_needed (which is generally
* the same as pipe query num_primitives_generated) should increase
* if SO is disabled for d3d10, but for GL we definitely need to
* increase num_primitives_generated and this is only called for active
* SO. If it must not increase for d3d10 need to disambiguate the counters
* in the driver and do some work for getting correct values, if it should
* increase too should call this from outside streamout code.
*/
static void
lp_setup_so_info(struct vbuf_render *vbr, uint primitives, uint prim_generated)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
lp->so_stats.num_primitives_written += primitives;
lp->so_stats.primitives_storage_needed += prim_generated;
}
static void
lp_setup_pipeline_statistics(
struct vbuf_render *vbr,
const struct pipe_query_data_pipeline_statistics *stats)
{
struct lp_setup_context *setup = lp_setup_context(vbr);
struct llvmpipe_context *llvmpipe = llvmpipe_context(setup->pipe);
llvmpipe->pipeline_statistics.ia_vertices +=
stats->ia_vertices;
llvmpipe->pipeline_statistics.ia_primitives +=
stats->ia_primitives;
llvmpipe->pipeline_statistics.vs_invocations +=
stats->vs_invocations;
llvmpipe->pipeline_statistics.gs_invocations +=
stats->gs_invocations;
llvmpipe->pipeline_statistics.gs_primitives +=
stats->gs_primitives;
if (!llvmpipe_rasterization_disabled(llvmpipe)) {
llvmpipe->pipeline_statistics.c_invocations +=
stats->c_invocations;
} else {
llvmpipe->pipeline_statistics.c_invocations = 0;
}
}
/**
* Create the post-transform vertex handler for the given context.
*/
void
lp_setup_init_vbuf(struct lp_setup_context *setup)
{
setup->base.max_indices = LP_MAX_VBUF_INDEXES;
setup->base.max_vertex_buffer_bytes = LP_MAX_VBUF_SIZE;
setup->base.get_vertex_info = lp_setup_get_vertex_info;
setup->base.allocate_vertices = lp_setup_allocate_vertices;
setup->base.map_vertices = lp_setup_map_vertices;
setup->base.unmap_vertices = lp_setup_unmap_vertices;
setup->base.set_primitive = lp_setup_set_primitive;
setup->base.draw_elements = lp_setup_draw_elements;
setup->base.draw_arrays = lp_setup_draw_arrays;
setup->base.release_vertices = lp_setup_release_vertices;
setup->base.destroy = lp_setup_vbuf_destroy;
setup->base.set_stream_output_info = lp_setup_so_info;
setup->base.pipeline_statistics = lp_setup_pipeline_statistics;
}
|