xorg_renderer.c revision f44b0ff84338c2184ef4f2cbb752bf62f4fff1fc 
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_format.h"
9#include "util/u_math.h"
10#include "util/u_memory.h"
11#include "util/u_rect.h"
12
13#include "pipe/p_inlines.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 struct pipe_buffer *
46renderer_buffer_create(struct xorg_renderer *r)
47{
48   struct pipe_buffer *buf =
49      pipe_user_buffer_create(r->pipe->screen,
50                              r->buffer,
51                              sizeof(float)*
52                              r->buffer_size);
53   r->buffer_size = 0;
54
55   return buf;
56}
57
58static INLINE void
59renderer_draw(struct xorg_renderer *r)
60{
61   struct pipe_context *pipe = r->pipe;
62   struct pipe_buffer *buf = 0;
63   int num_verts = r->buffer_size/(r->attrs_per_vertex * NUM_COMPONENTS);
64
65   if (!r->buffer_size)
66      return;
67
68   buf = renderer_buffer_create(r);
69
70
71   if (buf) {
72      util_draw_vertex_buffer(pipe, buf, 0,
73                              PIPE_PRIM_QUADS,
74                              num_verts,  /* verts */
75                              r->attrs_per_vertex); /* attribs/vert */
76
77      pipe_buffer_reference(&buf, NULL);
78   }
79}
80
81static INLINE void
82renderer_draw_conditional(struct xorg_renderer *r,
83                          int next_batch)
84{
85   if (r->buffer_size + next_batch >= BUF_SIZE ||
86       (next_batch == 0 && r->buffer_size)) {
87      renderer_draw(r);
88   }
89}
90
91static void
92renderer_init_state(struct xorg_renderer *r)
93{
94   struct pipe_depth_stencil_alpha_state dsa;
95   struct pipe_rasterizer_state raster;
96
97   /* set common initial clip state */
98   memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
99   cso_set_depth_stencil_alpha(r->cso, &dsa);
100
101
102   /* XXX: move to renderer_init_state? */
103   memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
104   raster.gl_rasterization_rules = 1;
105   cso_set_rasterizer(r->cso, &raster);
106
107}
108
109
110static INLINE void
111add_vertex_color(struct xorg_renderer *r,
112                 float x, float y,
113                 float color[4])
114{
115   float *vertex = r->buffer + r->buffer_size;
116
117   vertex[0] = x;
118   vertex[1] = y;
119   vertex[2] = 0.f; /*z*/
120   vertex[3] = 1.f; /*w*/
121
122   vertex[4] = color[0]; /*r*/
123   vertex[5] = color[1]; /*g*/
124   vertex[6] = color[2]; /*b*/
125   vertex[7] = color[3]; /*a*/
126
127   r->buffer_size += 8;
128}
129
130static INLINE void
131add_vertex_1tex(struct xorg_renderer *r,
132                float x, float y, float s, float t)
133{
134   float *vertex = r->buffer + r->buffer_size;
135
136   vertex[0] = x;
137   vertex[1] = y;
138   vertex[2] = 0.f; /*z*/
139   vertex[3] = 1.f; /*w*/
140
141   vertex[4] = s;   /*s*/
142   vertex[5] = t;   /*t*/
143   vertex[6] = 0.f; /*r*/
144   vertex[7] = 1.f; /*q*/
145
146   r->buffer_size += 8;
147}
148
149static void
150add_vertex_data1(struct xorg_renderer *r,
151                 float srcX, float srcY,  float dstX, float dstY,
152                 float width, float height,
153                 struct pipe_texture *src, float *src_matrix)
154{
155   float s0, t0, s1, t1, s2, t2, s3, t3;
156   float pt0[2], pt1[2], pt2[2], pt3[2];
157
158   pt0[0] = srcX;
159   pt0[1] = srcY;
160   pt1[0] = (srcX + width);
161   pt1[1] = srcY;
162   pt2[0] = (srcX + width);
163   pt2[1] = (srcY + height);
164   pt3[0] = srcX;
165   pt3[1] = (srcY + height);
166
167   if (src_matrix) {
168      map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
169      map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
170      map_point(src_matrix, pt2[0], pt2[1], &pt2[0], &pt2[1]);
171      map_point(src_matrix, pt3[0], pt3[1], &pt3[0], &pt3[1]);
172   }
173
174   s0 =  pt0[0] / src->width0;
175   s1 =  pt1[0] / src->width0;
176   s2 =  pt2[0] / src->width0;
177   s3 =  pt3[0] / src->width0;
178   t0 =  pt0[1] / src->height0;
179   t1 =  pt1[1] / src->height0;
180   t2 =  pt2[1] / src->height0;
181   t3 =  pt3[1] / src->height0;
182
183   /* 1st vertex */
184   add_vertex_1tex(r, dstX, dstY, s0, t0);
185   /* 2nd vertex */
186   add_vertex_1tex(r, dstX + width, dstY, s1, t1);
187   /* 3rd vertex */
188   add_vertex_1tex(r, dstX + width, dstY + height, s2, t2);
189   /* 4th vertex */
190   add_vertex_1tex(r, dstX, dstY + height, s3, t3);
191}
192
193
194static INLINE void
195add_vertex_2tex(struct xorg_renderer *r,
196                float x, float y,
197                float s0, float t0, float s1, float t1)
198{
199   float *vertex = r->buffer + r->buffer_size;
200
201   vertex[0] = x;
202   vertex[1] = y;
203   vertex[2] = 0.f; /*z*/
204   vertex[3] = 1.f; /*w*/
205
206   vertex[4] = s0;  /*s*/
207   vertex[5] = t0;  /*t*/
208   vertex[6] = 0.f; /*r*/
209   vertex[7] = 1.f; /*q*/
210
211   vertex[8] = s1;  /*s*/
212   vertex[9] = t1;  /*t*/
213   vertex[10] = 0.f; /*r*/
214   vertex[11] = 1.f; /*q*/
215
216   r->buffer_size += 12;
217}
218
219static void
220add_vertex_data2(struct xorg_renderer *r,
221                 float srcX, float srcY, float maskX, float maskY,
222                 float dstX, float dstY, float width, float height,
223                 struct pipe_texture *src,
224                 struct pipe_texture *mask,
225                 float *src_matrix, float *mask_matrix)
226{
227   float src_s0, src_t0, src_s1, src_t1;
228   float mask_s0, mask_t0, mask_s1, mask_t1;
229   float spt0[2], spt1[2];
230   float mpt0[2], mpt1[2];
231
232   spt0[0] = srcX;
233   spt0[1] = srcY;
234   spt1[0] = srcX + width;
235   spt1[1] = srcY + height;
236
237   mpt0[0] = maskX;
238   mpt0[1] = maskY;
239   mpt1[0] = maskX + width;
240   mpt1[1] = maskY + height;
241
242   if (src_matrix) {
243      map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
244      map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
245   }
246
247   if (mask_matrix) {
248      map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
249      map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
250   }
251
252   src_s0 = spt0[0] / src->width0;
253   src_t0 = spt0[1] / src->height0;
254   src_s1 = spt1[0] / src->width0;
255   src_t1 = spt1[1] / src->height0;
256
257   mask_s0 = mpt0[0] / mask->width0;
258   mask_t0 = mpt0[1] / mask->height0;
259   mask_s1 = mpt1[0] / mask->width0;
260   mask_t1 = mpt1[1] / mask->height0;
261
262   /* 1st vertex */
263   add_vertex_2tex(r, dstX, dstY,
264                   src_s0, src_t0, mask_s0, mask_t0);
265   /* 2nd vertex */
266   add_vertex_2tex(r, dstX + width, dstY,
267                   src_s1, src_t0, mask_s1, mask_t0);
268   /* 3rd vertex */
269   add_vertex_2tex(r, dstX + width, dstY + height,
270                   src_s1, src_t1, mask_s1, mask_t1);
271   /* 4th vertex */
272   add_vertex_2tex(r, dstX, dstY + height,
273                   src_s0, src_t1, mask_s0, mask_t1);
274}
275
276static struct pipe_buffer *
277setup_vertex_data_yuv(struct xorg_renderer *r,
278                      float srcX, float srcY, float srcW, float srcH,
279                      float dstX, float dstY, float dstW, float dstH,
280                      struct pipe_texture **tex)
281{
282   float s0, t0, s1, t1;
283   float spt0[2], spt1[2];
284
285   spt0[0] = srcX;
286   spt0[1] = srcY;
287   spt1[0] = srcX + srcW;
288   spt1[1] = srcY + srcH;
289
290   s0 = spt0[0] / tex[0]->width0;
291   t0 = spt0[1] / tex[0]->height0;
292   s1 = spt1[0] / tex[0]->width0;
293   t1 = spt1[1] / tex[0]->height0;
294
295   /* 1st vertex */
296   add_vertex_1tex(r, dstX, dstY, s0, t0);
297   /* 2nd vertex */
298   add_vertex_1tex(r, dstX + dstW, dstY,
299                   s1, t0);
300   /* 3rd vertex */
301   add_vertex_1tex(r, dstX + dstW, dstY + dstH,
302                   s1, t1);
303   /* 4th vertex */
304   add_vertex_1tex(r, dstX, dstY + dstH,
305                   s0, t1);
306
307   return renderer_buffer_create(r);
308}
309
310
311
312/* Set up framebuffer, viewport and vertex shader constant buffer
313 * state for a particular destinaton surface.  In all our rendering,
314 * these concepts are linked.
315 */
316void renderer_bind_destination(struct xorg_renderer *r,
317                               struct pipe_surface *surface,
318                               int width,
319                               int height )
320{
321
322   struct pipe_framebuffer_state fb;
323   struct pipe_viewport_state viewport;
324
325   /* Framebuffer uses actual surface width/height
326    */
327   memset(&fb, 0, sizeof fb);
328   fb.width  = surface->width;
329   fb.height = surface->height;
330   fb.nr_cbufs = 1;
331   fb.cbufs[0] = surface;
332   fb.zsbuf = 0;
333
334   /* Viewport just touches the bit we're interested in:
335    */
336   viewport.scale[0] =  width / 2.f;
337   viewport.scale[1] =  height / 2.f;
338   viewport.scale[2] =  1.0;
339   viewport.scale[3] =  1.0;
340   viewport.translate[0] = width / 2.f;
341   viewport.translate[1] = height / 2.f;
342   viewport.translate[2] = 0.0;
343   viewport.translate[3] = 0.0;
344
345   /* Constant buffer set up to match viewport dimensions:
346    */
347   if (r->fb_width != width ||
348       r->fb_height != height)
349   {
350      float vs_consts[8] = {
351         2.f/width, 2.f/height, 1, 1,
352         -1, -1, 0, 0
353      };
354
355      r->fb_width = width;
356      r->fb_height = height;
357
358      renderer_set_constants(r, PIPE_SHADER_VERTEX,
359                             vs_consts, sizeof vs_consts);
360   }
361
362   cso_set_framebuffer(r->cso, &fb);
363   cso_set_viewport(r->cso, &viewport);
364}
365
366
367struct xorg_renderer * renderer_create(struct pipe_context *pipe)
368{
369   struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
370
371   renderer->pipe = pipe;
372   renderer->cso = cso_create_context(pipe);
373   renderer->shaders = xorg_shaders_create(renderer);
374
375   renderer_init_state(renderer);
376
377   return renderer;
378}
379
380void renderer_destroy(struct xorg_renderer *r)
381{
382   struct pipe_buffer **vsbuf = &r->vs_const_buffer;
383   struct pipe_buffer **fsbuf = &r->fs_const_buffer;
384
385   if (*vsbuf)
386      pipe_buffer_reference(vsbuf, NULL);
387
388   if (*fsbuf)
389      pipe_buffer_reference(fsbuf, NULL);
390
391   if (r->shaders) {
392      xorg_shaders_destroy(r->shaders);
393      r->shaders = NULL;
394   }
395
396   if (r->cso) {
397      cso_release_all(r->cso);
398      cso_destroy_context(r->cso);
399      r->cso = NULL;
400   }
401}
402
403
404
405
406
407void renderer_set_constants(struct xorg_renderer *r,
408                            int shader_type,
409                            const float *params,
410                            int param_bytes)
411{
412   struct pipe_buffer **cbuf =
413      (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
414      &r->fs_const_buffer;
415
416   pipe_buffer_reference(cbuf, NULL);
417   *cbuf = pipe_buffer_create(r->pipe->screen, 16,
418                              PIPE_BUFFER_USAGE_CONSTANT,
419                              param_bytes);
420
421   if (*cbuf) {
422      pipe_buffer_write(r->pipe->screen, *cbuf,
423                        0, param_bytes, params);
424   }
425   r->pipe->set_constant_buffer(r->pipe, shader_type, 0, *cbuf);
426}
427
428
429void renderer_copy_prepare(struct xorg_renderer *r,
430                           struct pipe_surface *dst_surface,
431                           struct pipe_texture *src_texture)
432{
433   struct pipe_context *pipe = r->pipe;
434   struct pipe_screen *screen = pipe->screen;
435   struct xorg_shader shader;
436
437   assert(screen->is_format_supported(screen, dst_surface->format,
438                                      PIPE_TEXTURE_2D,
439                                      PIPE_TEXTURE_USAGE_RENDER_TARGET,
440                                      0));
441
442
443   /* set misc state we care about */
444   {
445      struct pipe_blend_state blend;
446      memset(&blend, 0, sizeof(blend));
447      blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
448      blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
449      blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
450      blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
451      blend.colormask = PIPE_MASK_RGBA;
452      cso_set_blend(r->cso, &blend);
453   }
454
455   /* sampler */
456   {
457      struct pipe_sampler_state sampler;
458      memset(&sampler, 0, sizeof(sampler));
459      sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
460      sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
461      sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
462      sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
463      sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
464      sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
465      sampler.normalized_coords = 1;
466      cso_single_sampler(r->cso, 0, &sampler);
467      cso_single_sampler_done(r->cso);
468   }
469
470   renderer_bind_destination(r, dst_surface,
471                             dst_surface->width,
472                             dst_surface->height);
473
474   /* texture */
475   cso_set_sampler_textures(r->cso, 1, &src_texture);
476
477   /* shaders */
478   shader = xorg_shaders_get(r->shaders,
479                             VS_COMPOSITE,
480                             FS_COMPOSITE);
481   cso_set_vertex_shader_handle(r->cso, shader.vs);
482   cso_set_fragment_shader_handle(r->cso, shader.fs);
483
484   r->buffer_size = 0;
485   r->attrs_per_vertex = 2;
486}
487
488struct pipe_texture *
489renderer_clone_texture(struct xorg_renderer *r,
490                       struct pipe_texture *src)
491{
492   enum pipe_format format;
493   struct pipe_context *pipe = r->pipe;
494   struct pipe_screen *screen = pipe->screen;
495   struct pipe_texture *pt;
496   struct pipe_texture templ;
497
498   if (pipe->is_texture_referenced(pipe, src, 0, 0) &
499       PIPE_REFERENCED_FOR_WRITE)
500      pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
501
502   /* the coming in texture should already have that invariance */
503   debug_assert(screen->is_format_supported(screen, src->format,
504                                            PIPE_TEXTURE_2D,
505                                            PIPE_TEXTURE_USAGE_SAMPLER, 0));
506
507   format = src->format;
508
509   memset(&templ, 0, sizeof(templ));
510   templ.target = PIPE_TEXTURE_2D;
511   templ.format = format;
512   templ.last_level = 0;
513   templ.width0 = src->width0;
514   templ.height0 = src->height0;
515   templ.depth0 = 1;
516   templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
517
518   pt = screen->texture_create(screen, &templ);
519
520   debug_assert(!pt || pipe_is_referenced(&pt->reference));
521
522   if (!pt)
523      return NULL;
524
525   {
526      /* copy source framebuffer surface into texture */
527      struct pipe_surface *ps_read = screen->get_tex_surface(
528         screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
529      struct pipe_surface *ps_tex = screen->get_tex_surface(
530         screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
531      if (pipe->surface_copy) {
532         pipe->surface_copy(pipe,
533                ps_tex, /* dest */
534                0, 0, /* destx/y */
535                ps_read,
536                0, 0, src->width0, src->height0);
537      } else {
538          util_surface_copy(pipe, FALSE,
539                ps_tex, /* dest */
540                0, 0, /* destx/y */
541                ps_read,
542                0, 0, src->width0, src->height0);
543      }
544      pipe_surface_reference(&ps_read, NULL);
545      pipe_surface_reference(&ps_tex, NULL);
546   }
547
548   return pt;
549}
550
551
552void renderer_copy_pixmap(struct xorg_renderer *r,
553                          int dx, int dy,
554                          int sx, int sy,
555                          int width, int height,
556                          float src_width,
557                          float src_height)
558{
559   float s0, t0, s1, t1;
560   float x0, y0, x1, y1;
561
562
563   /* XXX: could put the texcoord scaling calculation into the vertex
564    * shader.
565    */
566   s0 = sx            / src_width;
567   s1 = (sx + width)  / src_width;
568   t0 = sy            / src_height;
569   t1 = (sy + height) / src_height;
570
571   x0 = dx;
572   x1 = dx + width;
573   y0 = dy;
574   y1 = dy + height;
575
576   /* draw quad */
577   renderer_draw_conditional(r, 4*8);
578   add_vertex_1tex(r, x0, y0, s0, t0);
579   add_vertex_1tex(r, x1, y0, s1, t0);
580   add_vertex_1tex(r, x1, y1, s1, t1);
581   add_vertex_1tex(r, x0, y1, s0, t1);
582}
583
584
585
586
587void renderer_draw_yuv(struct xorg_renderer *r,
588                       int src_x, int src_y, int src_w, int src_h,
589                       int dst_x, int dst_y, int dst_w, int dst_h,
590                       struct pipe_texture **textures)
591{
592   struct pipe_context *pipe = r->pipe;
593   struct pipe_buffer *buf = 0;
594
595   buf = setup_vertex_data_yuv(r,
596                               src_x, src_y, src_w, src_h,
597                               dst_x, dst_y, dst_w, dst_h,
598                               textures);
599
600   if (buf) {
601      const int num_attribs = 2; /*pos + tex coord*/
602
603      util_draw_vertex_buffer(pipe, buf, 0,
604                              PIPE_PRIM_QUADS,
605                              4,  /* verts */
606                              num_attribs); /* attribs/vert */
607
608      pipe_buffer_reference(&buf, NULL);
609   }
610}
611
612void renderer_begin_solid(struct xorg_renderer *r)
613{
614   r->buffer_size = 0;
615   r->attrs_per_vertex = 2;
616}
617
618void renderer_solid(struct xorg_renderer *r,
619                    int x0, int y0,
620                    int x1, int y1,
621                    float *color)
622{
623   /*
624   debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
625   x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
626
627   renderer_draw_conditional(r, 4 * 8);
628
629   /* 1st vertex */
630   add_vertex_color(r, x0, y0, color);
631   /* 2nd vertex */
632   add_vertex_color(r, x1, y0, color);
633   /* 3rd vertex */
634   add_vertex_color(r, x1, y1, color);
635   /* 4th vertex */
636   add_vertex_color(r, x0, y1, color);
637}
638
639void renderer_draw_flush(struct xorg_renderer *r)
640{
641   renderer_draw_conditional(r, 0);
642}
643
644void renderer_begin_textures(struct xorg_renderer *r,
645                             struct pipe_texture **textures,
646                             int num_textures)
647{
648   r->attrs_per_vertex = 1 + num_textures;
649   r->buffer_size = 0;
650}
651
652void renderer_texture(struct xorg_renderer *r,
653                      int *pos,
654                      int width, int height,
655                      struct pipe_texture **textures,
656                      int num_textures,
657                      float *src_matrix,
658                      float *mask_matrix)
659{
660
661#if 0
662   if (src_matrix) {
663      debug_printf("src_matrix = \n");
664      debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
665      debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
666      debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
667   }
668   if (mask_matrix) {
669      debug_printf("mask_matrix = \n");
670      debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
671      debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
672      debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
673   }
674#endif
675
676   switch(r->attrs_per_vertex) {
677   case 2:
678      renderer_draw_conditional(r, 4 * 8);
679      add_vertex_data1(r,
680                       pos[0], pos[1], /* src */
681                       pos[4], pos[5], /* dst */
682                       width, height,
683                       textures[0], src_matrix);
684      break;
685   case 3:
686      renderer_draw_conditional(r, 4 * 12);
687      add_vertex_data2(r,
688                       pos[0], pos[1], /* src */
689                       pos[2], pos[3], /* mask */
690                       pos[4], pos[5], /* dst */
691                       width, height,
692                       textures[0], textures[1],
693                       src_matrix, mask_matrix);
694      break;
695   default:
696      debug_assert(!"Unsupported number of textures");
697      break;
698   }
699}
700