xorg_renderer.c revision 3ed72dd31d45b66e54724dcd20bbbbb6875313c3 
1#include "xorg_exa.h"
2#include "xorg_renderer.h"
3
4#include "xorg_exa_tgsi.h"
5
6#include "cso_cache/cso_context.h"
7#include "util/u_draw_quad.h"
8#include "util/u_math.h"
9#include "util/u_memory.h"
10#include "util/u_sampler.h"
11
12#include "util/u_inlines.h"
13#include "util/u_box.h"
14
15#include <math.h>
16
17#define floatsEqual(x, y) (fabs(x - y) <= 0.00001f * MIN2(fabs(x), fabs(y)))
18#define floatIsZero(x) (floatsEqual((x) + 1, 1))
19
20#define NUM_COMPONENTS 4
21
22static INLINE boolean is_affine(float *matrix)
23{
24   return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
25      && floatsEqual(matrix[8], 1);
26}
27static INLINE void map_point(float *mat, float x, float y,
28                             float *out_x, float *out_y)
29{
30   if (!mat) {
31      *out_x = x;
32      *out_y = y;
33      return;
34   }
35
36   *out_x = mat[0]*x + mat[3]*y + mat[6];
37   *out_y = mat[1]*x + mat[4]*y + mat[7];
38   if (!is_affine(mat)) {
39      float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
40      *out_x *= w;
41      *out_y *= w;
42   }
43}
44
45static INLINE void
46renderer_draw(struct xorg_renderer *r)
47{
48   int num_verts = r->buffer_size/(r->attrs_per_vertex * NUM_COMPONENTS);
49
50   if (!r->buffer_size)
51      return;
52
53   cso_set_vertex_elements(r->cso, r->attrs_per_vertex, r->velems);
54   util_draw_user_vertex_buffer(r->cso, r->buffer, PIPE_PRIM_QUADS,
55                                num_verts, r->attrs_per_vertex);
56
57   r->buffer_size = 0;
58}
59
60static INLINE void
61renderer_draw_conditional(struct xorg_renderer *r,
62                          int next_batch)
63{
64   if (r->buffer_size + next_batch >= BUF_SIZE ||
65       (next_batch == 0 && r->buffer_size)) {
66      renderer_draw(r);
67   }
68}
69
70static void
71renderer_init_state(struct xorg_renderer *r)
72{
73   struct pipe_depth_stencil_alpha_state dsa;
74   struct pipe_rasterizer_state raster;
75   unsigned i;
76
77   /* set common initial clip state */
78   memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
79   cso_set_depth_stencil_alpha(r->cso, &dsa);
80
81
82   /* XXX: move to renderer_init_state? */
83   memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
84   raster.gl_rasterization_rules = 1;
85   raster.depth_clip = 1;
86   cso_set_rasterizer(r->cso, &raster);
87
88   /* vertex elements state */
89   memset(&r->velems[0], 0, sizeof(r->velems[0]) * 3);
90   for (i = 0; i < 3; i++) {
91      r->velems[i].src_offset = i * 4 * sizeof(float);
92      r->velems[i].instance_divisor = 0;
93      r->velems[i].vertex_buffer_index = 0;
94      r->velems[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
95   }
96}
97
98
99static INLINE void
100add_vertex_color(struct xorg_renderer *r,
101                 float x, float y,
102                 float color[4])
103{
104   float *vertex = r->buffer + r->buffer_size;
105
106   vertex[0] = x;
107   vertex[1] = y;
108   vertex[2] = 0.f; /*z*/
109   vertex[3] = 1.f; /*w*/
110
111   vertex[4] = color[0]; /*r*/
112   vertex[5] = color[1]; /*g*/
113   vertex[6] = color[2]; /*b*/
114   vertex[7] = color[3]; /*a*/
115
116   r->buffer_size += 8;
117}
118
119static INLINE void
120add_vertex_1tex(struct xorg_renderer *r,
121                float x, float y, float s, float t)
122{
123   float *vertex = r->buffer + r->buffer_size;
124
125   vertex[0] = x;
126   vertex[1] = y;
127   vertex[2] = 0.f; /*z*/
128   vertex[3] = 1.f; /*w*/
129
130   vertex[4] = s;   /*s*/
131   vertex[5] = t;   /*t*/
132   vertex[6] = 0.f; /*r*/
133   vertex[7] = 1.f; /*q*/
134
135   r->buffer_size += 8;
136}
137
138static void
139add_vertex_data1(struct xorg_renderer *r,
140                 float srcX, float srcY,  float dstX, float dstY,
141                 float width, float height,
142                 struct pipe_resource *src, float *src_matrix)
143{
144   float s0, t0, s1, t1, s2, t2, s3, t3;
145   float pt0[2], pt1[2], pt2[2], pt3[2];
146
147   pt0[0] = srcX;
148   pt0[1] = srcY;
149   pt1[0] = (srcX + width);
150   pt1[1] = srcY;
151   pt2[0] = (srcX + width);
152   pt2[1] = (srcY + height);
153   pt3[0] = srcX;
154   pt3[1] = (srcY + height);
155
156   if (src_matrix) {
157      map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
158      map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
159      map_point(src_matrix, pt2[0], pt2[1], &pt2[0], &pt2[1]);
160      map_point(src_matrix, pt3[0], pt3[1], &pt3[0], &pt3[1]);
161   }
162
163   s0 =  pt0[0] / src->width0;
164   s1 =  pt1[0] / src->width0;
165   s2 =  pt2[0] / src->width0;
166   s3 =  pt3[0] / src->width0;
167   t0 =  pt0[1] / src->height0;
168   t1 =  pt1[1] / src->height0;
169   t2 =  pt2[1] / src->height0;
170   t3 =  pt3[1] / src->height0;
171
172   /* 1st vertex */
173   add_vertex_1tex(r, dstX, dstY, s0, t0);
174   /* 2nd vertex */
175   add_vertex_1tex(r, dstX + width, dstY, s1, t1);
176   /* 3rd vertex */
177   add_vertex_1tex(r, dstX + width, dstY + height, s2, t2);
178   /* 4th vertex */
179   add_vertex_1tex(r, dstX, dstY + height, s3, t3);
180}
181
182
183static INLINE void
184add_vertex_2tex(struct xorg_renderer *r,
185                float x, float y,
186                float s0, float t0, float s1, float t1)
187{
188   float *vertex = r->buffer + r->buffer_size;
189
190   vertex[0] = x;
191   vertex[1] = y;
192   vertex[2] = 0.f; /*z*/
193   vertex[3] = 1.f; /*w*/
194
195   vertex[4] = s0;  /*s*/
196   vertex[5] = t0;  /*t*/
197   vertex[6] = 0.f; /*r*/
198   vertex[7] = 1.f; /*q*/
199
200   vertex[8] = s1;  /*s*/
201   vertex[9] = t1;  /*t*/
202   vertex[10] = 0.f; /*r*/
203   vertex[11] = 1.f; /*q*/
204
205   r->buffer_size += 12;
206}
207
208static void
209add_vertex_data2(struct xorg_renderer *r,
210                 float srcX, float srcY, float maskX, float maskY,
211                 float dstX, float dstY, float width, float height,
212                 struct pipe_resource *src,
213                 struct pipe_resource *mask,
214                 float *src_matrix, float *mask_matrix)
215{
216   float src_s0, src_t0, src_s1, src_t1;
217   float mask_s0, mask_t0, mask_s1, mask_t1;
218   float spt0[2], spt1[2];
219   float mpt0[2], mpt1[2];
220
221   spt0[0] = srcX;
222   spt0[1] = srcY;
223   spt1[0] = srcX + width;
224   spt1[1] = srcY + height;
225
226   mpt0[0] = maskX;
227   mpt0[1] = maskY;
228   mpt1[0] = maskX + width;
229   mpt1[1] = maskY + height;
230
231   if (src_matrix) {
232      map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
233      map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
234   }
235
236   if (mask_matrix) {
237      map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
238      map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
239   }
240
241   src_s0 = spt0[0] / src->width0;
242   src_t0 = spt0[1] / src->height0;
243   src_s1 = spt1[0] / src->width0;
244   src_t1 = spt1[1] / src->height0;
245
246   mask_s0 = mpt0[0] / mask->width0;
247   mask_t0 = mpt0[1] / mask->height0;
248   mask_s1 = mpt1[0] / mask->width0;
249   mask_t1 = mpt1[1] / mask->height0;
250
251   /* 1st vertex */
252   add_vertex_2tex(r, dstX, dstY,
253                   src_s0, src_t0, mask_s0, mask_t0);
254   /* 2nd vertex */
255   add_vertex_2tex(r, dstX + width, dstY,
256                   src_s1, src_t0, mask_s1, mask_t0);
257   /* 3rd vertex */
258   add_vertex_2tex(r, dstX + width, dstY + height,
259                   src_s1, src_t1, mask_s1, mask_t1);
260   /* 4th vertex */
261   add_vertex_2tex(r, dstX, dstY + height,
262                   src_s0, src_t1, mask_s0, mask_t1);
263}
264
265static void
266setup_vertex_data_yuv(struct xorg_renderer *r,
267                      float srcX, float srcY, float srcW, float srcH,
268                      float dstX, float dstY, float dstW, float dstH,
269                      struct pipe_resource **tex)
270{
271   float s0, t0, s1, t1;
272   float spt0[2], spt1[2];
273
274   spt0[0] = srcX;
275   spt0[1] = srcY;
276   spt1[0] = srcX + srcW;
277   spt1[1] = srcY + srcH;
278
279   s0 = spt0[0] / tex[0]->width0;
280   t0 = spt0[1] / tex[0]->height0;
281   s1 = spt1[0] / tex[0]->width0;
282   t1 = spt1[1] / tex[0]->height0;
283
284   /* 1st vertex */
285   add_vertex_1tex(r, dstX, dstY, s0, t0);
286   /* 2nd vertex */
287   add_vertex_1tex(r, dstX + dstW, dstY,
288                   s1, t0);
289   /* 3rd vertex */
290   add_vertex_1tex(r, dstX + dstW, dstY + dstH,
291                   s1, t1);
292   /* 4th vertex */
293   add_vertex_1tex(r, dstX, dstY + dstH,
294                   s0, t1);
295}
296
297
298
299/* Set up framebuffer, viewport and vertex shader constant buffer
300 * state for a particular destinaton surface.  In all our rendering,
301 * these concepts are linked.
302 */
303void renderer_bind_destination(struct xorg_renderer *r,
304                               struct pipe_surface *surface,
305                               int width,
306                               int height )
307{
308
309   struct pipe_framebuffer_state fb;
310   struct pipe_viewport_state viewport;
311
312   /* Framebuffer uses actual surface width/height
313    */
314   memset(&fb, 0, sizeof fb);
315   fb.width  = surface->width;
316   fb.height = surface->height;
317   fb.nr_cbufs = 1;
318   fb.cbufs[0] = surface;
319   fb.zsbuf = 0;
320
321   /* Viewport just touches the bit we're interested in:
322    */
323   viewport.scale[0] =  width / 2.f;
324   viewport.scale[1] =  height / 2.f;
325   viewport.scale[2] =  1.0;
326   viewport.scale[3] =  1.0;
327   viewport.translate[0] = width / 2.f;
328   viewport.translate[1] = height / 2.f;
329   viewport.translate[2] = 0.0;
330   viewport.translate[3] = 0.0;
331
332   /* Constant buffer set up to match viewport dimensions:
333    */
334   if (r->fb_width != width ||
335       r->fb_height != height)
336   {
337      float vs_consts[8] = {
338         2.f/width, 2.f/height, 1, 1,
339         -1, -1, 0, 0
340      };
341
342      r->fb_width = width;
343      r->fb_height = height;
344
345      renderer_set_constants(r, PIPE_SHADER_VERTEX,
346                             vs_consts, sizeof vs_consts);
347   }
348
349   cso_set_framebuffer(r->cso, &fb);
350   cso_set_viewport(r->cso, &viewport);
351}
352
353
354struct xorg_renderer * renderer_create(struct pipe_context *pipe)
355{
356   struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
357
358   renderer->pipe = pipe;
359   renderer->cso = cso_create_context(pipe);
360   renderer->shaders = xorg_shaders_create(renderer);
361
362   renderer_init_state(renderer);
363
364   return renderer;
365}
366
367void renderer_destroy(struct xorg_renderer *r)
368{
369   struct pipe_resource **vsbuf = &r->vs_const_buffer;
370   struct pipe_resource **fsbuf = &r->fs_const_buffer;
371
372   if (*vsbuf)
373      pipe_resource_reference(vsbuf, NULL);
374
375   if (*fsbuf)
376      pipe_resource_reference(fsbuf, NULL);
377
378   if (r->shaders) {
379      xorg_shaders_destroy(r->shaders);
380      r->shaders = NULL;
381   }
382
383   if (r->cso) {
384      cso_release_all(r->cso);
385      cso_destroy_context(r->cso);
386      r->cso = NULL;
387   }
388}
389
390
391
392
393
394void renderer_set_constants(struct xorg_renderer *r,
395                            int shader_type,
396                            const float *params,
397                            int param_bytes)
398{
399   struct pipe_resource **cbuf =
400      (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
401      &r->fs_const_buffer;
402
403   pipe_resource_reference(cbuf, NULL);
404   *cbuf = pipe_buffer_create(r->pipe->screen,
405                              PIPE_BIND_CONSTANT_BUFFER,
406                              PIPE_USAGE_STATIC,
407                              param_bytes);
408
409   if (*cbuf) {
410      pipe_buffer_write(r->pipe, *cbuf,
411                        0, param_bytes, params);
412   }
413   pipe_set_constant_buffer(r->pipe, shader_type, 0, *cbuf);
414}
415
416
417void renderer_copy_prepare(struct xorg_renderer *r,
418                           struct pipe_surface *dst_surface,
419                           struct pipe_resource *src_texture)
420{
421   struct pipe_context *pipe = r->pipe;
422   struct pipe_screen *screen = pipe->screen;
423   struct xorg_shader shader;
424
425   assert(screen->is_format_supported(screen, dst_surface->format,
426                                      PIPE_TEXTURE_2D, 0,
427                                      PIPE_BIND_RENDER_TARGET));
428   (void) screen;
429
430
431   /* set misc state we care about */
432   {
433      struct pipe_blend_state blend;
434      memset(&blend, 0, sizeof(blend));
435      blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
436      blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
437      blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
438      blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
439      blend.rt[0].colormask = PIPE_MASK_RGBA;
440      cso_set_blend(r->cso, &blend);
441   }
442
443   /* sampler */
444   {
445      struct pipe_sampler_state sampler;
446      memset(&sampler, 0, sizeof(sampler));
447      sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
448      sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
449      sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
450      sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
451      sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
452      sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
453      sampler.normalized_coords = 1;
454      cso_single_sampler(r->cso, 0, &sampler);
455      cso_single_sampler_done(r->cso);
456   }
457
458   renderer_bind_destination(r, dst_surface,
459                             dst_surface->width,
460                             dst_surface->height);
461
462   /* texture/sampler view */
463   {
464      struct pipe_sampler_view templ;
465      struct pipe_sampler_view *src_view;
466      u_sampler_view_default_template(&templ,
467                                      src_texture,
468                                      src_texture->format);
469      src_view = pipe->create_sampler_view(pipe, src_texture, &templ);
470      cso_set_fragment_sampler_views(r->cso, 1, &src_view);
471      pipe_sampler_view_reference(&src_view, NULL);
472   }
473
474   /* shaders */
475   shader = xorg_shaders_get(r->shaders,
476                             VS_COMPOSITE,
477                             FS_COMPOSITE);
478   cso_set_vertex_shader_handle(r->cso, shader.vs);
479   cso_set_fragment_shader_handle(r->cso, shader.fs);
480
481   r->buffer_size = 0;
482   r->attrs_per_vertex = 2;
483}
484
485struct pipe_resource *
486renderer_clone_texture(struct xorg_renderer *r,
487                       struct pipe_resource *src)
488{
489   enum pipe_format format;
490   struct pipe_context *pipe = r->pipe;
491   struct pipe_screen *screen = pipe->screen;
492   struct pipe_resource *pt;
493   struct pipe_resource templ;
494
495   /* the coming in texture should already have that invariance */
496   debug_assert(screen->is_format_supported(screen, src->format,
497                                            PIPE_TEXTURE_2D, 0,
498                                            PIPE_BIND_SAMPLER_VIEW));
499
500   format = src->format;
501
502   memset(&templ, 0, sizeof(templ));
503   templ.target = PIPE_TEXTURE_2D;
504   templ.format = format;
505   templ.last_level = 0;
506   templ.width0 = src->width0;
507   templ.height0 = src->height0;
508   templ.depth0 = 1;
509   templ.array_size = 1;
510   templ.bind = PIPE_BIND_SAMPLER_VIEW;
511
512   pt = screen->resource_create(screen, &templ);
513
514   debug_assert(!pt || pipe_is_referenced(&pt->reference));
515
516   if (!pt)
517      return NULL;
518
519   {
520      /* copy source framebuffer surface into texture */
521      struct pipe_box src_box;
522      u_box_origin_2d(src->width0, src->height0, &src_box);
523
524      pipe->resource_copy_region(pipe,
525                                 pt, /* dest */
526                                 0, /* dest_level */
527                                 0, 0, 0, /* destx/y/z */
528                                 src,
529                                 0, &src_box);
530   }
531
532   return pt;
533}
534
535
536void renderer_copy_pixmap(struct xorg_renderer *r,
537                          int dx, int dy,
538                          int sx, int sy,
539                          int width, int height,
540                          float src_width,
541                          float src_height)
542{
543   float s0, t0, s1, t1;
544   float x0, y0, x1, y1;
545
546
547   /* XXX: could put the texcoord scaling calculation into the vertex
548    * shader.
549    */
550   s0 = sx            / src_width;
551   s1 = (sx + width)  / src_width;
552   t0 = sy            / src_height;
553   t1 = (sy + height) / src_height;
554
555   x0 = dx;
556   x1 = dx + width;
557   y0 = dy;
558   y1 = dy + height;
559
560   /* draw quad */
561   renderer_draw_conditional(r, 4*8);
562   add_vertex_1tex(r, x0, y0, s0, t0);
563   add_vertex_1tex(r, x1, y0, s1, t0);
564   add_vertex_1tex(r, x1, y1, s1, t1);
565   add_vertex_1tex(r, x0, y1, s0, t1);
566}
567
568void renderer_draw_yuv(struct xorg_renderer *r,
569                       float src_x, float src_y, float src_w, float src_h,
570                       int dst_x, int dst_y, int dst_w, int dst_h,
571                       struct pipe_resource **textures)
572{
573   const int num_attribs = 2; /*pos + tex coord*/
574
575   setup_vertex_data_yuv(r,
576                         src_x, src_y, src_w, src_h,
577                         dst_x, dst_y, dst_w, dst_h,
578                         textures);
579
580   cso_set_vertex_elements(r->cso, num_attribs, r->velems);
581
582   util_draw_user_vertex_buffer(r->cso, r->buffer,
583                                PIPE_PRIM_QUADS,
584                                4,  /* verts */
585                                num_attribs); /* attribs/vert */
586
587   r->buffer_size = 0;
588}
589
590void renderer_begin_solid(struct xorg_renderer *r)
591{
592   r->buffer_size = 0;
593   r->attrs_per_vertex = 2;
594}
595
596void renderer_solid(struct xorg_renderer *r,
597                    int x0, int y0,
598                    int x1, int y1,
599                    float *color)
600{
601   /*
602   debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
603   x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
604
605   renderer_draw_conditional(r, 4 * 8);
606
607   /* 1st vertex */
608   add_vertex_color(r, x0, y0, color);
609   /* 2nd vertex */
610   add_vertex_color(r, x1, y0, color);
611   /* 3rd vertex */
612   add_vertex_color(r, x1, y1, color);
613   /* 4th vertex */
614   add_vertex_color(r, x0, y1, color);
615}
616
617void renderer_draw_flush(struct xorg_renderer *r)
618{
619   renderer_draw_conditional(r, 0);
620}
621
622void renderer_begin_textures(struct xorg_renderer *r,
623                             int num_textures)
624{
625   r->attrs_per_vertex = 1 + num_textures;
626   r->buffer_size = 0;
627}
628
629void renderer_texture(struct xorg_renderer *r,
630                      int *pos,
631                      int width, int height,
632                      struct pipe_sampler_view **sampler_view,
633                      int num_textures,
634                      float *src_matrix,
635                      float *mask_matrix)
636{
637
638#if 0
639   if (src_matrix) {
640      debug_printf("src_matrix = \n");
641      debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
642      debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
643      debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
644   }
645   if (mask_matrix) {
646      debug_printf("mask_matrix = \n");
647      debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
648      debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
649      debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
650   }
651#endif
652
653   switch(r->attrs_per_vertex) {
654   case 2:
655      renderer_draw_conditional(r, 4 * 8);
656      add_vertex_data1(r,
657                       pos[0], pos[1], /* src */
658                       pos[4], pos[5], /* dst */
659                       width, height,
660                       sampler_view[0]->texture, src_matrix);
661      break;
662   case 3:
663      renderer_draw_conditional(r, 4 * 12);
664      add_vertex_data2(r,
665                       pos[0], pos[1], /* src */
666                       pos[2], pos[3], /* mask */
667                       pos[4], pos[5], /* dst */
668                       width, height,
669                       sampler_view[0]->texture, sampler_view[1]->texture,
670                       src_matrix, mask_matrix);
671      break;
672   default:
673      debug_assert(!"Unsupported number of textures");
674      break;
675   }
676}
677