gallivm/llvmpipe: replace 'int stride' with 'int row_stride[MAX_LEVELS]'
[mesa.git] / src / gallium / drivers / llvmpipe / lp_setup.c
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 /**
29 * Tiling engine.
30 *
31 * Builds per-tile display lists and executes them on calls to
32 * lp_setup_flush().
33 */
34
35 #include "pipe/p_defines.h"
36 #include "util/u_inlines.h"
37 #include "util/u_memory.h"
38 #include "util/u_pack_color.h"
39 #include "util/u_surface.h"
40 #include "lp_scene.h"
41 #include "lp_scene_queue.h"
42 #include "lp_buffer.h"
43 #include "lp_texture.h"
44 #include "lp_debug.h"
45 #include "lp_fence.h"
46 #include "lp_rast.h"
47 #include "lp_setup_context.h"
48 #include "lp_screen.h"
49 #include "state_tracker/sw_winsys.h"
50
51 #include "draw/draw_context.h"
52 #include "draw/draw_vbuf.h"
53
54
55 static void set_scene_state( struct setup_context *, unsigned );
56
57
58 struct lp_scene *
59 lp_setup_get_current_scene(struct setup_context *setup)
60 {
61 if (!setup->scene) {
62
63 /* wait for a free/empty scene
64 */
65 setup->scene = lp_scene_dequeue(setup->empty_scenes, TRUE);
66
67 assert(lp_scene_is_empty(setup->scene));
68
69 lp_scene_begin_binning(setup->scene,
70 &setup->fb );
71 }
72 return setup->scene;
73 }
74
75
76 static void
77 first_triangle( struct setup_context *setup,
78 const float (*v0)[4],
79 const float (*v1)[4],
80 const float (*v2)[4])
81 {
82 set_scene_state( setup, SETUP_ACTIVE );
83 lp_setup_choose_triangle( setup );
84 setup->triangle( setup, v0, v1, v2 );
85 }
86
87 static void
88 first_line( struct setup_context *setup,
89 const float (*v0)[4],
90 const float (*v1)[4])
91 {
92 set_scene_state( setup, SETUP_ACTIVE );
93 lp_setup_choose_line( setup );
94 setup->line( setup, v0, v1 );
95 }
96
97 static void
98 first_point( struct setup_context *setup,
99 const float (*v0)[4])
100 {
101 set_scene_state( setup, SETUP_ACTIVE );
102 lp_setup_choose_point( setup );
103 setup->point( setup, v0 );
104 }
105
106 static void reset_context( struct setup_context *setup )
107 {
108 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
109
110 /* Reset derived state */
111 setup->constants.stored_size = 0;
112 setup->constants.stored_data = NULL;
113 setup->fs.stored = NULL;
114 setup->dirty = ~0;
115
116 /* no current bin */
117 setup->scene = NULL;
118
119 /* Reset some state:
120 */
121 setup->clear.flags = 0;
122
123 /* Have an explicit "start-binning" call and get rid of this
124 * pointer twiddling?
125 */
126 setup->line = first_line;
127 setup->point = first_point;
128 setup->triangle = first_triangle;
129 }
130
131
132 /** Rasterize all scene's bins */
133 static void
134 lp_setup_rasterize_scene( struct setup_context *setup,
135 boolean write_depth )
136 {
137 struct lp_scene *scene = lp_setup_get_current_scene(setup);
138
139 lp_scene_rasterize(scene,
140 setup->rast,
141 write_depth);
142
143 reset_context( setup );
144
145 LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
146 }
147
148
149
150 static void
151 begin_binning( struct setup_context *setup )
152 {
153 struct lp_scene *scene = lp_setup_get_current_scene(setup);
154
155 LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
156 (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
157 (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) ? "clear": "load");
158
159 if (setup->fb.nr_cbufs) {
160 if (setup->clear.flags & PIPE_CLEAR_COLOR)
161 lp_scene_bin_everywhere( scene,
162 lp_rast_clear_color,
163 setup->clear.color );
164 else
165 lp_scene_bin_everywhere( scene,
166 lp_rast_load_color,
167 lp_rast_arg_null() );
168 }
169
170 if (setup->fb.zsbuf) {
171 if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL)
172 lp_scene_bin_everywhere( scene,
173 lp_rast_clear_zstencil,
174 setup->clear.zstencil );
175 }
176
177 LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
178 }
179
180
181 /* This basically bins and then flushes any outstanding full-screen
182 * clears.
183 *
184 * TODO: fast path for fullscreen clears and no triangles.
185 */
186 static void
187 execute_clears( struct setup_context *setup )
188 {
189 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
190
191 begin_binning( setup );
192 lp_setup_rasterize_scene( setup, TRUE );
193 }
194
195
196 static void
197 set_scene_state( struct setup_context *setup,
198 unsigned new_state )
199 {
200 unsigned old_state = setup->state;
201
202 if (old_state == new_state)
203 return;
204
205 LP_DBG(DEBUG_SETUP, "%s old %d new %d\n", __FUNCTION__, old_state, new_state);
206
207 switch (new_state) {
208 case SETUP_ACTIVE:
209 begin_binning( setup );
210 break;
211
212 case SETUP_CLEARED:
213 if (old_state == SETUP_ACTIVE) {
214 assert(0);
215 return;
216 }
217 break;
218
219 case SETUP_FLUSHED:
220 if (old_state == SETUP_CLEARED)
221 execute_clears( setup );
222 else
223 lp_setup_rasterize_scene( setup, TRUE );
224 break;
225 }
226
227 setup->state = new_state;
228 }
229
230
231 void
232 lp_setup_flush( struct setup_context *setup,
233 unsigned flags )
234 {
235 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
236
237 set_scene_state( setup, SETUP_FLUSHED );
238 }
239
240
241 void
242 lp_setup_bind_framebuffer( struct setup_context *setup,
243 const struct pipe_framebuffer_state *fb )
244 {
245 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
246
247 /* Flush any old scene.
248 */
249 set_scene_state( setup, SETUP_FLUSHED );
250
251 /* Set new state. This will be picked up later when we next need a
252 * scene.
253 */
254 util_copy_framebuffer_state(&setup->fb, fb);
255 }
256
257
258 void
259 lp_setup_clear( struct setup_context *setup,
260 const float *color,
261 double depth,
262 unsigned stencil,
263 unsigned flags )
264 {
265 struct lp_scene *scene = lp_setup_get_current_scene(setup);
266 unsigned i;
267
268 LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
269
270
271 if (flags & PIPE_CLEAR_COLOR) {
272 for (i = 0; i < 4; ++i)
273 setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
274 }
275
276 if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
277 setup->clear.zstencil.clear_zstencil =
278 util_pack_z_stencil(setup->fb.zsbuf->format,
279 depth,
280 stencil);
281 }
282
283 if (setup->state == SETUP_ACTIVE) {
284 /* Add the clear to existing scene. In the unusual case where
285 * both color and depth-stencil are being cleared when there's
286 * already been some rendering, we could discard the currently
287 * binned scene and start again, but I don't see that as being
288 * a common usage.
289 */
290 if (flags & PIPE_CLEAR_COLOR)
291 lp_scene_bin_everywhere( scene,
292 lp_rast_clear_color,
293 setup->clear.color );
294
295 if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL)
296 lp_scene_bin_everywhere( scene,
297 lp_rast_clear_zstencil,
298 setup->clear.zstencil );
299 }
300 else {
301 /* Put ourselves into the 'pre-clear' state, specifically to try
302 * and accumulate multiple clears to color and depth_stencil
303 * buffers which the app or state-tracker might issue
304 * separately.
305 */
306 set_scene_state( setup, SETUP_CLEARED );
307
308 setup->clear.flags |= flags;
309 }
310 }
311
312
313 /**
314 * Emit a fence.
315 */
316 struct pipe_fence_handle *
317 lp_setup_fence( struct setup_context *setup )
318 {
319 struct lp_scene *scene = lp_setup_get_current_scene(setup);
320 const unsigned rank = lp_scene_get_num_bins( scene ); /* xxx */
321 struct lp_fence *fence = lp_fence_create(rank);
322
323 LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
324
325 set_scene_state( setup, SETUP_ACTIVE );
326
327 /* insert the fence into all command bins */
328 lp_scene_bin_everywhere( scene,
329 lp_rast_fence,
330 lp_rast_arg_fence(fence) );
331
332 return (struct pipe_fence_handle *) fence;
333 }
334
335
336 void
337 lp_setup_set_triangle_state( struct setup_context *setup,
338 unsigned cull_mode,
339 boolean ccw_is_frontface,
340 boolean scissor )
341 {
342 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
343
344 setup->ccw_is_frontface = ccw_is_frontface;
345 setup->cullmode = cull_mode;
346 setup->triangle = first_triangle;
347 setup->scissor_test = scissor;
348 }
349
350
351
352 void
353 lp_setup_set_fs_inputs( struct setup_context *setup,
354 const struct lp_shader_input *input,
355 unsigned nr )
356 {
357 LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
358
359 memcpy( setup->fs.input, input, nr * sizeof input[0] );
360 setup->fs.nr_inputs = nr;
361 }
362
363 void
364 lp_setup_set_fs_functions( struct setup_context *setup,
365 lp_jit_frag_func jit_function0,
366 lp_jit_frag_func jit_function1,
367 boolean opaque )
368 {
369 LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) jit_function0);
370 /* FIXME: reference count */
371
372 setup->fs.current.jit_function[0] = jit_function0;
373 setup->fs.current.jit_function[1] = jit_function1;
374 setup->fs.current.opaque = opaque;
375 setup->dirty |= LP_SETUP_NEW_FS;
376 }
377
378 void
379 lp_setup_set_fs_constants(struct setup_context *setup,
380 struct pipe_buffer *buffer)
381 {
382 LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
383
384 pipe_buffer_reference(&setup->constants.current, buffer);
385
386 setup->dirty |= LP_SETUP_NEW_CONSTANTS;
387 }
388
389
390 void
391 lp_setup_set_alpha_ref_value( struct setup_context *setup,
392 float alpha_ref_value )
393 {
394 LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
395
396 if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
397 setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
398 setup->dirty |= LP_SETUP_NEW_FS;
399 }
400 }
401
402 void
403 lp_setup_set_blend_color( struct setup_context *setup,
404 const struct pipe_blend_color *blend_color )
405 {
406 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
407
408 assert(blend_color);
409
410 if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
411 memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
412 setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
413 }
414 }
415
416
417 void
418 lp_setup_set_scissor( struct setup_context *setup,
419 const struct pipe_scissor_state *scissor )
420 {
421 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
422
423 assert(scissor);
424
425 if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
426 setup->scissor.current = *scissor; /* struct copy */
427 setup->dirty |= LP_SETUP_NEW_SCISSOR;
428 }
429 }
430
431
432 void
433 lp_setup_set_flatshade_first( struct setup_context *setup,
434 boolean flatshade_first )
435 {
436 setup->flatshade_first = flatshade_first;
437 }
438
439
440 void
441 lp_setup_set_vertex_info( struct setup_context *setup,
442 struct vertex_info *vertex_info )
443 {
444 /* XXX: just silently holding onto the pointer:
445 */
446 setup->vertex_info = vertex_info;
447 }
448
449
450 /**
451 * Called during state validation when LP_NEW_TEXTURE is set.
452 */
453 void
454 lp_setup_set_sampler_textures( struct setup_context *setup,
455 unsigned num, struct pipe_texture **texture)
456 {
457 unsigned i;
458
459 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
460
461 assert(num <= PIPE_MAX_SAMPLERS);
462
463 for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
464 struct pipe_texture *tex = i < num ? texture[i] : NULL;
465
466 if(tex) {
467 struct llvmpipe_texture *lp_tex = llvmpipe_texture(tex);
468 struct lp_jit_texture *jit_tex;
469 jit_tex = &setup->fs.current.jit_context.textures[i];
470 jit_tex->width = tex->width0;
471 jit_tex->height = tex->height0;
472 jit_tex->depth = tex->depth0;
473 jit_tex->last_level = tex->last_level;
474 if (!lp_tex->dt) {
475 /* regular texture - setup array of mipmap level pointers */
476 int j;
477 for (j = 0; j <= tex->last_level; j++) {
478 jit_tex->data[j] =
479 (ubyte *) lp_tex->data + lp_tex->level_offset[j];
480 jit_tex->row_stride[j] = lp_tex->stride[j];
481 }
482 }
483 else {
484 /* display target texture/surface */
485 /*
486 * XXX: Where should this be unmapped?
487 */
488
489 struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
490 struct sw_winsys *winsys = screen->winsys;
491 jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
492 PIPE_BUFFER_USAGE_CPU_READ);
493 jit_tex->row_stride[0] = lp_tex->stride[0];
494 assert(jit_tex->data[0]);
495 }
496
497 /* the scene references this texture */
498 {
499 struct lp_scene *scene = lp_setup_get_current_scene(setup);
500 lp_scene_texture_reference(scene, tex);
501 }
502 }
503 }
504
505 setup->dirty |= LP_SETUP_NEW_FS;
506 }
507
508
509 /**
510 * Is the given texture referenced by any scene?
511 * Note: we have to check all scenes including any scenes currently
512 * being rendered and the current scene being built.
513 */
514 unsigned
515 lp_setup_is_texture_referenced( const struct setup_context *setup,
516 const struct pipe_texture *texture )
517 {
518 unsigned i;
519
520 /* check the render targets */
521 for (i = 0; i < setup->fb.nr_cbufs; i++) {
522 if (setup->fb.cbufs[i]->texture == texture)
523 return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
524 }
525 if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
526 return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
527 }
528
529 /* check textures referenced by the scene */
530 for (i = 0; i < Elements(setup->scenes); i++) {
531 if (lp_scene_is_texture_referenced(setup->scenes[i], texture)) {
532 return PIPE_REFERENCED_FOR_READ;
533 }
534 }
535
536 return PIPE_UNREFERENCED;
537 }
538
539
540 /**
541 * Called by vbuf code when we're about to draw something.
542 */
543 void
544 lp_setup_update_state( struct setup_context *setup )
545 {
546 struct lp_scene *scene = lp_setup_get_current_scene(setup);
547
548 LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
549
550 assert(setup->fs.current.jit_function);
551
552 if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
553 uint8_t *stored;
554 unsigned i, j;
555
556 stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
557
558 /* smear each blend color component across 16 ubyte elements */
559 for (i = 0; i < 4; ++i) {
560 uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
561 for (j = 0; j < 16; ++j)
562 stored[i*16 + j] = c;
563 }
564
565 setup->blend_color.stored = stored;
566
567 setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
568 setup->dirty |= LP_SETUP_NEW_FS;
569 }
570
571 if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
572 float *stored;
573
574 stored = lp_scene_alloc_aligned(scene, 4 * sizeof(int32_t), 16);
575
576 stored[0] = (float) setup->scissor.current.minx;
577 stored[1] = (float) setup->scissor.current.miny;
578 stored[2] = (float) setup->scissor.current.maxx;
579 stored[3] = (float) setup->scissor.current.maxy;
580
581 setup->scissor.stored = stored;
582
583 setup->fs.current.jit_context.scissor_xmin = stored[0];
584 setup->fs.current.jit_context.scissor_ymin = stored[1];
585 setup->fs.current.jit_context.scissor_xmax = stored[2];
586 setup->fs.current.jit_context.scissor_ymax = stored[3];
587
588 setup->dirty |= LP_SETUP_NEW_FS;
589 }
590
591 if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
592 struct pipe_buffer *buffer = setup->constants.current;
593
594 if(buffer) {
595 unsigned current_size = buffer->size;
596 const void *current_data = llvmpipe_buffer(buffer)->data;
597
598 /* TODO: copy only the actually used constants? */
599
600 if(setup->constants.stored_size != current_size ||
601 !setup->constants.stored_data ||
602 memcmp(setup->constants.stored_data,
603 current_data,
604 current_size) != 0) {
605 void *stored;
606
607 stored = lp_scene_alloc(scene, current_size);
608 if(stored) {
609 memcpy(stored,
610 current_data,
611 current_size);
612 setup->constants.stored_size = current_size;
613 setup->constants.stored_data = stored;
614 }
615 }
616 }
617 else {
618 setup->constants.stored_size = 0;
619 setup->constants.stored_data = NULL;
620 }
621
622 setup->fs.current.jit_context.constants = setup->constants.stored_data;
623 setup->dirty |= LP_SETUP_NEW_FS;
624 }
625
626
627 if(setup->dirty & LP_SETUP_NEW_FS) {
628 if(!setup->fs.stored ||
629 memcmp(setup->fs.stored,
630 &setup->fs.current,
631 sizeof setup->fs.current) != 0) {
632 /* The fs state that's been stored in the scene is different from
633 * the new, current state. So allocate a new lp_rast_state object
634 * and append it to the bin's setup data buffer.
635 */
636 struct lp_rast_state *stored =
637 (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
638 if(stored) {
639 memcpy(stored,
640 &setup->fs.current,
641 sizeof setup->fs.current);
642 setup->fs.stored = stored;
643
644 /* put the state-set command into all bins */
645 lp_scene_bin_state_command( scene,
646 lp_rast_set_state,
647 lp_rast_arg_state(setup->fs.stored) );
648 }
649 }
650 }
651
652 setup->dirty = 0;
653
654 assert(setup->fs.stored);
655 }
656
657
658
659 /* Only caller is lp_setup_vbuf_destroy()
660 */
661 void
662 lp_setup_destroy( struct setup_context *setup )
663 {
664 reset_context( setup );
665
666 pipe_buffer_reference(&setup->constants.current, NULL);
667
668 /* free the scenes in the 'empty' queue */
669 while (1) {
670 struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
671 if (!scene)
672 break;
673 lp_scene_destroy(scene);
674 }
675
676 lp_rast_destroy( setup->rast );
677
678 FREE( setup );
679 }
680
681
682 /**
683 * Create a new primitive tiling engine. Plug it into the backend of
684 * the draw module. Currently also creates a rasterizer to use with
685 * it.
686 */
687 struct setup_context *
688 lp_setup_create( struct pipe_context *pipe,
689 struct draw_context *draw )
690 {
691 unsigned i;
692 struct setup_context *setup = CALLOC_STRUCT(setup_context);
693
694 if (!setup)
695 return NULL;
696
697 lp_setup_init_vbuf(setup);
698
699 setup->empty_scenes = lp_scene_queue_create();
700 if (!setup->empty_scenes)
701 goto fail;
702
703 /* XXX: move this to the screen and share between contexts:
704 */
705 setup->rast = lp_rast_create();
706 if (!setup->rast)
707 goto fail;
708
709 setup->vbuf = draw_vbuf_stage(draw, &setup->base);
710 if (!setup->vbuf)
711 goto fail;
712
713 draw_set_rasterize_stage(draw, setup->vbuf);
714 draw_set_render(draw, &setup->base);
715
716 /* create some empty scenes */
717 for (i = 0; i < MAX_SCENES; i++) {
718 setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
719
720 lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
721 }
722
723 setup->triangle = first_triangle;
724 setup->line = first_line;
725 setup->point = first_point;
726
727 setup->dirty = ~0;
728
729 return setup;
730
731 fail:
732 if (setup->rast)
733 lp_rast_destroy( setup->rast );
734
735 if (setup->vbuf)
736 ;
737
738 if (setup->empty_scenes)
739 lp_scene_queue_destroy(setup->empty_scenes);
740
741 FREE(setup);
742 return NULL;
743 }
744