src/gallium/auxiliary/vl/vl_compositor.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   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 #include "vl_compositor.h"
  29 #include "util/u_draw.h"
  30 #include <assert.h>
  31 #include <pipe/p_context.h>
  32 #include <util/u_inlines.h>
  33 #include <util/u_memory.h>
  34 #include <util/u_keymap.h>
  35 #include <util/u_draw.h>
  36 #include <util/u_sampler.h>
  37 #include <tgsi/tgsi_ureg.h>
  38 #include "vl_csc.h"
  39
  40 struct vertex_shader_consts
  41 {
  42    struct vertex4f dst_scale;
  43    struct vertex4f dst_trans;
  44    struct vertex4f src_scale;
  45    struct vertex4f src_trans;
  46 };
  47
  48 struct fragment_shader_consts
  49 {
  50    float matrix[16];
  51 };
  52
  53 static bool
  54 u_video_rects_equal(struct pipe_video_rect *a, struct pipe_video_rect *b)
  55 {
  56    assert(a && b);
  57
  58    if (a->x != b->x)
  59       return false;
  60    if (a->y != b->y)
  61       return false;
  62    if (a->w != b->w)
  63       return false;
  64    if (a->h != b->h)
  65       return false;
  66
  67    return true;
  68 }
  69
  70 static bool
  71 create_vert_shader(struct vl_compositor *c)
  72 {
  73    struct ureg_program *shader;
  74    struct ureg_src vpos, vtex;
  75    struct ureg_dst o_vpos, o_vtex;
  76
  77    shader = ureg_create(TGSI_PROCESSOR_VERTEX);
  78    if (!shader)
  79       return false;
  80
  81    vpos = ureg_DECL_vs_input(shader, 0);
  82    vtex = ureg_DECL_vs_input(shader, 1);
  83    o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, 0);
  84    o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, 1);
  85
  86    /*
  87     * o_vpos = vpos
  88     * o_vtex = vtex
  89     */
  90    ureg_MOV(shader, o_vpos, vpos);
  91    ureg_MOV(shader, o_vtex, vtex);
  92
  93    ureg_END(shader);
  94
  95    c->vertex_shader = ureg_create_shader_and_destroy(shader, c->pipe);
  96    if (!c->vertex_shader)
  97       return false;
  98
  99    return true;
 100 }
 101
 102 static bool
 103 create_frag_shader_ycbcr_2_rgb(struct vl_compositor *c)
 104 {
 105    struct ureg_program *shader;
 106    struct ureg_src tc;
 107    struct ureg_src csc[4];
 108    struct ureg_src sampler;
 109    struct ureg_dst texel;
 110    struct ureg_dst fragment;
 111    unsigned i;
 112
 113    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 114    if (!shader)
 115       return false;
 116
 117    tc = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, 1, TGSI_INTERPOLATE_LINEAR);
 118    for (i = 0; i < 4; ++i)
 119       csc[i] = ureg_DECL_constant(shader, i);
 120    sampler = ureg_DECL_sampler(shader, 0);
 121    texel = ureg_DECL_temporary(shader);
 122    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 123
 124    /*
 125     * texel = tex(tc, sampler)
 126     * fragment = csc * texel
 127     */
 128    ureg_TEX(shader, texel, TGSI_TEXTURE_2D, tc, sampler);
 129    for (i = 0; i < 4; ++i)
 130       ureg_DP4(shader, ureg_writemask(fragment, TGSI_WRITEMASK_X << i), csc[i], ureg_src(texel));
 131
 132    ureg_release_temporary(shader, texel);
 133    ureg_END(shader);
 134
 135    c->fragment_shader.ycbcr_2_rgb = ureg_create_shader_and_destroy(shader, c->pipe);
 136    if (!c->fragment_shader.ycbcr_2_rgb)
 137       return false;
 138
 139    return true;
 140 }
 141
 142 static bool
 143 create_frag_shader_rgb_2_rgb(struct vl_compositor *c)
 144 {
 145    struct ureg_program *shader;
 146    struct ureg_src tc;
 147    struct ureg_src sampler;
 148    struct ureg_dst fragment;
 149
 150    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 151    if (!shader)
 152       return false;
 153
 154    tc = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, 1, TGSI_INTERPOLATE_LINEAR);
 155    sampler = ureg_DECL_sampler(shader, 0);
 156    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 157
 158    /*
 159     * fragment = tex(tc, sampler)
 160     */
 161    ureg_TEX(shader, fragment, TGSI_TEXTURE_2D, tc, sampler);
 162    ureg_END(shader);
 163
 164    c->fragment_shader.rgb_2_rgb = ureg_create_shader_and_destroy(shader, c->pipe);
 165    if (!c->fragment_shader.rgb_2_rgb)
 166       return false;
 167
 168    return true;
 169 }
 170
 171 static bool
 172 init_pipe_state(struct vl_compositor *c)
 173 {
 174    struct pipe_sampler_state sampler;
 175
 176    assert(c);
 177
 178    c->fb_state.nr_cbufs = 1;
 179    c->fb_state.zsbuf = NULL;
 180
 181    memset(&sampler, 0, sizeof(sampler));
 182    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 183    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 184    sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 185    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
 186    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 187    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
 188    sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
 189    sampler.compare_func = PIPE_FUNC_ALWAYS;
 190    sampler.normalized_coords = 1;
 191    /*sampler.lod_bias = ;*/
 192    /*sampler.min_lod = ;*/
 193    /*sampler.max_lod = ;*/
 194    /*sampler.border_color[i] = ;*/
 195    /*sampler.max_anisotropy = ;*/
 196    c->sampler = c->pipe->create_sampler_state(c->pipe, &sampler);
 197
 198    return true;
 199 }
 200
 201 static void cleanup_pipe_state(struct vl_compositor *c)
 202 {
 203    assert(c);
 204
 205    c->pipe->delete_sampler_state(c->pipe, c->sampler);
 206 }
 207
 208 static bool
 209 init_shaders(struct vl_compositor *c)
 210 {
 211    assert(c);
 212
 213    if (!create_vert_shader(c)) {
 214       debug_printf("Unable to create vertex shader.\n");
 215       return false;
 216    }
 217    if (!create_frag_shader_ycbcr_2_rgb(c)) {
 218       debug_printf("Unable to create YCbCr-to-RGB fragment shader.\n");
 219       return false;
 220    }
 221    if (!create_frag_shader_rgb_2_rgb(c)) {
 222       debug_printf("Unable to create RGB-to-RGB fragment shader.\n");
 223       return false;
 224    }
 225
 226    return true;
 227 }
 228
 229 static void cleanup_shaders(struct vl_compositor *c)
 230 {
 231    assert(c);
 232
 233    c->pipe->delete_vs_state(c->pipe, c->vertex_shader);
 234    c->pipe->delete_fs_state(c->pipe, c->fragment_shader.ycbcr_2_rgb);
 235    c->pipe->delete_fs_state(c->pipe, c->fragment_shader.rgb_2_rgb);
 236 }
 237
 238 static bool
 239 init_buffers(struct vl_compositor *c)
 240 {
 241    struct fragment_shader_consts fsc;
 242    struct pipe_vertex_element vertex_elems[2];
 243
 244    assert(c);
 245
 246    /*
 247     * Create our vertex buffer and vertex buffer elements
 248     */
 249    c->vertex_buf.stride = sizeof(struct vertex4f);
 250    c->vertex_buf.buffer_offset = 0;
 251    /* XXX: Create with DYNAMIC or STREAM */
 252    c->vertex_buf.buffer = pipe_buffer_create
 253    (
 254       c->pipe->screen,
 255       PIPE_BIND_VERTEX_BUFFER,
 256       PIPE_USAGE_STATIC,
 257       sizeof(struct vertex4f) * (VL_COMPOSITOR_MAX_LAYERS + 2) * 6
 258    );
 259
 260    vertex_elems[0].src_offset = 0;
 261    vertex_elems[0].instance_divisor = 0;
 262    vertex_elems[0].vertex_buffer_index = 0;
 263    vertex_elems[0].src_format = PIPE_FORMAT_R32G32_FLOAT;
 264    vertex_elems[1].src_offset = sizeof(struct vertex2f);
 265    vertex_elems[1].instance_divisor = 0;
 266    vertex_elems[1].vertex_buffer_index = 0;
 267    vertex_elems[1].src_format = PIPE_FORMAT_R32G32_FLOAT;
 268    c->vertex_elems_state = c->pipe->create_vertex_elements_state(c->pipe, 2, vertex_elems);
 269
 270    /*
 271     * Create our fragment shader's constant buffer
 272     * Const buffer contains the color conversion matrix and bias vectors
 273     */
 274    /* XXX: Create with IMMUTABLE/STATIC... although it does change every once in a long while... */
 275    c->fs_const_buf = pipe_buffer_create
 276    (
 277       c->pipe->screen,
 278       PIPE_BIND_CONSTANT_BUFFER,
 279       PIPE_USAGE_STATIC,
 280       sizeof(struct fragment_shader_consts)
 281    );
 282
 283    vl_csc_get_matrix(VL_CSC_COLOR_STANDARD_IDENTITY, NULL, true, fsc.matrix);
 284
 285    vl_compositor_set_csc_matrix(c, fsc.matrix);
 286
 287    return true;
 288 }
 289
 290 static void
 291 cleanup_buffers(struct vl_compositor *c)
 292 {
 293    assert(c);
 294
 295    c->pipe->delete_vertex_elements_state(c->pipe, c->vertex_elems_state);
 296    pipe_resource_reference(&c->vertex_buf.buffer, NULL);
 297    pipe_resource_reference(&c->fs_const_buf, NULL);
 298 }
 299
 300 static void
 301 texview_map_delete(const struct keymap *map,
 302                    const void *key, void *data,
 303                    void *user)
 304 {
 305    struct pipe_sampler_view *sv = (struct pipe_sampler_view*)data;
 306
 307    assert(map);
 308    assert(key);
 309    assert(data);
 310    assert(user);
 311
 312    pipe_sampler_view_reference(&sv, NULL);
 313 }
 314
 315 bool vl_compositor_init(struct vl_compositor *compositor, struct pipe_context *pipe)
 316 {
 317    unsigned i;
 318
 319    assert(compositor);
 320
 321    memset(compositor, 0, sizeof(struct vl_compositor));
 322
 323    compositor->pipe = pipe;
 324
 325    compositor->texview_map = util_new_keymap(sizeof(struct pipe_surface*), -1,
 326                                              texview_map_delete);
 327    if (!compositor->texview_map)
 328       return false;
 329
 330    if (!init_pipe_state(compositor)) {
 331       util_delete_keymap(compositor->texview_map, compositor->pipe);
 332       return false;
 333    }
 334    if (!init_shaders(compositor)) {
 335       util_delete_keymap(compositor->texview_map, compositor->pipe);
 336       cleanup_pipe_state(compositor);
 337       return false;
 338    }
 339    if (!init_buffers(compositor)) {
 340       util_delete_keymap(compositor->texview_map, compositor->pipe);
 341       cleanup_shaders(compositor);
 342       cleanup_pipe_state(compositor);
 343       return false;
 344    }
 345
 346    compositor->fb_state.width = 0;
 347    compositor->fb_state.height = 0;
 348    compositor->bg = NULL;
 349    compositor->dirty_bg = false;
 350    for (i = 0; i < VL_COMPOSITOR_MAX_LAYERS; ++i)
 351       compositor->layers[i] = NULL;
 352    compositor->dirty_layers = 0;
 353
 354    return true;
 355 }
 356
 357 void vl_compositor_cleanup(struct vl_compositor *compositor)
 358 {
 359    assert(compositor);
 360
 361    util_delete_keymap(compositor->texview_map, compositor->pipe);
 362    cleanup_buffers(compositor);
 363    cleanup_shaders(compositor);
 364    cleanup_pipe_state(compositor);
 365 }
 366
 367 void vl_compositor_set_background(struct vl_compositor *compositor,
 368                                  struct pipe_surface *bg, struct pipe_video_rect *bg_src_rect)
 369 {
 370    assert(compositor);
 371    assert((bg && bg_src_rect) || (!bg && !bg_src_rect));
 372
 373    if (compositor->bg != bg ||
 374        !u_video_rects_equal(&compositor->bg_src_rect, bg_src_rect)) {
 375       pipe_surface_reference(&compositor->bg, bg);
 376       /*if (!u_video_rects_equal(&compositor->bg_src_rect, bg_src_rect))*/
 377          compositor->bg_src_rect = *bg_src_rect;
 378       compositor->dirty_bg = true;
 379    }
 380 }
 381
 382 void vl_compositor_set_layers(struct vl_compositor *compositor,
 383                               struct pipe_surface *layers[],
 384                               struct pipe_video_rect *src_rects[],
 385                               struct pipe_video_rect *dst_rects[],
 386                               unsigned num_layers)
 387 {
 388    unsigned i;
 389
 390    assert(compositor);
 391    assert(num_layers <= VL_COMPOSITOR_MAX_LAYERS);
 392
 393    for (i = 0; i < num_layers; ++i)
 394    {
 395       assert((layers[i] && src_rects[i] && dst_rects[i]) ||
 396              (!layers[i] && !src_rects[i] && !dst_rects[i]));
 397
 398       if (compositor->layers[i] != layers[i] ||
 399           !u_video_rects_equal(&compositor->layer_src_rects[i], src_rects[i]) ||
 400           !u_video_rects_equal(&compositor->layer_dst_rects[i], dst_rects[i]))
 401       {
 402          pipe_surface_reference(&compositor->layers[i], layers[i]);
 403          /*if (!u_video_rects_equal(&compositor->layer_src_rects[i], src_rects[i]))*/
 404             compositor->layer_src_rects[i] = *src_rects[i];
 405          /*if (!u_video_rects_equal(&compositor->layer_dst_rects[i], dst_rects[i]))*/
 406             compositor->layer_dst_rects[i] = *dst_rects[i];
 407          compositor->dirty_layers |= 1 << i;
 408       }
 409
 410       if (layers[i])
 411          compositor->dirty_layers |= 1 << i;
 412    }
 413
 414    for (; i < VL_COMPOSITOR_MAX_LAYERS; ++i)
 415       pipe_surface_reference(&compositor->layers[i], NULL);
 416 }
 417
 418 static void gen_rect_verts(unsigned pos,
 419                            struct pipe_video_rect *src_rect,
 420                            struct vertex2f *src_inv_size,
 421                            struct pipe_video_rect *dst_rect,
 422                            struct vertex2f *dst_inv_size,
 423                            struct vertex4f *vb)
 424 {
 425    assert(pos < VL_COMPOSITOR_MAX_LAYERS + 2);
 426    assert(src_rect);
 427    assert(src_inv_size);
 428    assert((dst_rect && dst_inv_size) /*|| (!dst_rect && !dst_inv_size)*/);
 429    assert(vb);
 430
 431    vb[pos * 6 + 0].x = dst_rect->x * dst_inv_size->x;
 432    vb[pos * 6 + 0].y = dst_rect->y * dst_inv_size->y;
 433    vb[pos * 6 + 0].z = src_rect->x * src_inv_size->x;
 434    vb[pos * 6 + 0].w = src_rect->y * src_inv_size->y;
 435
 436    vb[pos * 6 + 1].x = dst_rect->x * dst_inv_size->x;
 437    vb[pos * 6 + 1].y = (dst_rect->y + dst_rect->h) * dst_inv_size->y;
 438    vb[pos * 6 + 1].z = src_rect->x * src_inv_size->x;
 439    vb[pos * 6 + 1].w = (src_rect->y + src_rect->h) * src_inv_size->y;
 440
 441    vb[pos * 6 + 2].x = (dst_rect->x + dst_rect->w) * dst_inv_size->x;
 442    vb[pos * 6 + 2].y = dst_rect->y * dst_inv_size->y;
 443    vb[pos * 6 + 2].z = (src_rect->x + src_rect->w) * src_inv_size->x;
 444    vb[pos * 6 + 2].w = src_rect->y * src_inv_size->y;
 445
 446    vb[pos * 6 + 3].x = (dst_rect->x + dst_rect->w) * dst_inv_size->x;
 447    vb[pos * 6 + 3].y = dst_rect->y * dst_inv_size->y;
 448    vb[pos * 6 + 3].z = (src_rect->x + src_rect->w) * src_inv_size->x;
 449    vb[pos * 6 + 3].w = src_rect->y * src_inv_size->y;
 450
 451    vb[pos * 6 + 4].x = dst_rect->x * dst_inv_size->x;
 452    vb[pos * 6 + 4].y = (dst_rect->y + dst_rect->h) * dst_inv_size->y;
 453    vb[pos * 6 + 4].z = src_rect->x * src_inv_size->x;
 454    vb[pos * 6 + 4].w = (src_rect->y + src_rect->h) * src_inv_size->y;
 455
 456    vb[pos * 6 + 5].x = (dst_rect->x + dst_rect->w) * dst_inv_size->x;
 457    vb[pos * 6 + 5].y = (dst_rect->y + dst_rect->h) * dst_inv_size->y;
 458    vb[pos * 6 + 5].z = (src_rect->x + src_rect->w) * src_inv_size->x;
 459    vb[pos * 6 + 5].w = (src_rect->y + src_rect->h) * src_inv_size->y;
 460 }
 461
 462 static unsigned gen_data(struct vl_compositor *c,
 463                          struct pipe_surface *src_surface,
 464                          struct pipe_video_rect *src_rect,
 465                          struct pipe_video_rect *dst_rect,
 466                          struct pipe_surface **textures,
 467                          void **frag_shaders)
 468 {
 469    void *vb;
 470    struct pipe_transfer *buf_transfer;
 471    unsigned num_rects = 0;
 472    unsigned i;
 473
 474    assert(c);
 475    assert(src_surface);
 476    assert(src_rect);
 477    assert(dst_rect);
 478    assert(textures);
 479
 480    vb = pipe_buffer_map(c->pipe, c->vertex_buf.buffer,
 481                         PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD,
 482                         &buf_transfer);
 483
 484    if (!vb)
 485       return 0;
 486
 487    if (c->dirty_bg) {
 488       struct vertex2f bg_inv_size = {1.0f / c->bg->width, 1.0f / c->bg->height};
 489       gen_rect_verts(num_rects, &c->bg_src_rect, &bg_inv_size, NULL, NULL, vb);
 490       textures[num_rects] = c->bg;
 491       /* XXX: Hack */
 492       frag_shaders[num_rects] = c->fragment_shader.rgb_2_rgb;
 493       ++num_rects;
 494       c->dirty_bg = false;
 495    }
 496
 497    {
 498       struct vertex2f src_inv_size = { 1.0f / src_surface->width, 1.0f / src_surface->height};
 499       gen_rect_verts(num_rects, src_rect, &src_inv_size, dst_rect, &c->fb_inv_size, vb);
 500       textures[num_rects] = src_surface;
 501       /* XXX: Hack, sort of */
 502       frag_shaders[num_rects] = c->fragment_shader.ycbcr_2_rgb;
 503       ++num_rects;
 504    }
 505
 506    for (i = 0; c->dirty_layers > 0; i++) {
 507       assert(i < VL_COMPOSITOR_MAX_LAYERS);
 508
 509       if (c->dirty_layers & (1 << i)) {
 510          struct vertex2f layer_inv_size = {1.0f / c->layers[i]->width, 1.0f / c->layers[i]->height};
 511          gen_rect_verts(num_rects, &c->layer_src_rects[i], &layer_inv_size,
 512                         &c->layer_dst_rects[i], &c->fb_inv_size, vb);
 513          textures[num_rects] = c->layers[i];
 514          /* XXX: Hack */
 515          frag_shaders[num_rects] = c->fragment_shader.rgb_2_rgb;
 516          ++num_rects;
 517          c->dirty_layers &= ~(1 << i);
 518       }
 519    }
 520
 521    pipe_buffer_unmap(c->pipe, buf_transfer);
 522
 523    return num_rects;
 524 }
 525
 526 static void draw_layers(struct vl_compositor *c,
 527                         struct pipe_surface *src_surface,
 528                         struct pipe_video_rect *src_rect,
 529                         struct pipe_video_rect *dst_rect)
 530 {
 531    unsigned num_rects;
 532    struct pipe_surface *src_surfaces[VL_COMPOSITOR_MAX_LAYERS + 2];
 533    void *frag_shaders[VL_COMPOSITOR_MAX_LAYERS + 2];
 534    unsigned i;
 535
 536    assert(c);
 537    assert(src_surface);
 538    assert(src_rect);
 539    assert(dst_rect);
 540
 541    num_rects = gen_data(c, src_surface, src_rect, dst_rect, src_surfaces, frag_shaders);
 542
 543    for (i = 0; i < num_rects; ++i) {
 544       boolean delete_view = FALSE;
 545       struct pipe_sampler_view *surface_view = (struct pipe_sampler_view*)util_keymap_lookup(c->texview_map,
 546                                                                                              &src_surfaces[i]);
 547       if (!surface_view) {
 548          struct pipe_sampler_view templat;
 549          u_sampler_view_default_template(&templat, src_surfaces[i]->texture,
 550                                          src_surfaces[i]->texture->format);
 551          surface_view = c->pipe->create_sampler_view(c->pipe, src_surfaces[i]->texture,
 552                                                      &templat);
 553          if (!surface_view)
 554             return;
 555
 556          delete_view = !util_keymap_insert(c->texview_map, &src_surfaces[i],
 557                                            surface_view, c->pipe);
 558       }
 559
 560       c->pipe->bind_fs_state(c->pipe, frag_shaders[i]);
 561       c->pipe->set_fragment_sampler_views(c->pipe, 1, &surface_view);
 562
 563       util_draw_arrays(c->pipe, PIPE_PRIM_TRIANGLES, i * 6, 6);
 564
 565       if (delete_view) {
 566          pipe_sampler_view_reference(&surface_view, NULL);
 567       }
 568    }
 569 }
 570
 571 void vl_compositor_render(struct vl_compositor          *compositor,
 572                           struct pipe_surface           *src_surface,
 573                           enum pipe_mpeg12_picture_type picture_type,
 574                           /*unsigned                    num_past_surfaces,
 575                           struct pipe_surface           *past_surfaces,
 576                           unsigned                      num_future_surfaces,
 577                           struct pipe_surface           *future_surfaces,*/
 578                           struct pipe_video_rect        *src_area,
 579                           struct pipe_surface           *dst_surface,
 580                           struct pipe_video_rect        *dst_area,
 581                           struct pipe_fence_handle      **fence)
 582 {
 583    assert(compositor);
 584    assert(src_surface);
 585    assert(src_area);
 586    assert(dst_surface);
 587    assert(dst_area);
 588    assert(picture_type == PIPE_MPEG12_PICTURE_TYPE_FRAME);
 589
 590    if (compositor->fb_state.width != dst_surface->width) {
 591       compositor->fb_inv_size.x = 1.0f / dst_surface->width;
 592       compositor->fb_state.width = dst_surface->width;
 593    }
 594    if (compositor->fb_state.height != dst_surface->height) {
 595       compositor->fb_inv_size.y = 1.0f / dst_surface->height;
 596       compositor->fb_state.height = dst_surface->height;
 597    }
 598
 599    compositor->fb_state.cbufs[0] = dst_surface;
 600
 601    compositor->viewport.scale[0] = compositor->fb_state.width;
 602    compositor->viewport.scale[1] = compositor->fb_state.height;
 603    compositor->viewport.scale[2] = 1;
 604    compositor->viewport.scale[3] = 1;
 605    compositor->viewport.translate[0] = 0;
 606    compositor->viewport.translate[1] = 0;
 607    compositor->viewport.translate[2] = 0;
 608    compositor->viewport.translate[3] = 0;
 609
 610    compositor->pipe->set_framebuffer_state(compositor->pipe, &compositor->fb_state);
 611    compositor->pipe->set_viewport_state(compositor->pipe, &compositor->viewport);
 612    compositor->pipe->bind_fragment_sampler_states(compositor->pipe, 1, &compositor->sampler);
 613    compositor->pipe->bind_vs_state(compositor->pipe, compositor->vertex_shader);
 614    compositor->pipe->set_vertex_buffers(compositor->pipe, 1, &compositor->vertex_buf);
 615    compositor->pipe->bind_vertex_elements_state(compositor->pipe, compositor->vertex_elems_state);
 616    compositor->pipe->set_constant_buffer(compositor->pipe, PIPE_SHADER_FRAGMENT, 0, compositor->fs_const_buf);
 617
 618    draw_layers(compositor, src_surface, src_area, dst_area);
 619
 620    assert(!compositor->dirty_bg && !compositor->dirty_layers);
 621    compositor->pipe->flush(compositor->pipe, PIPE_FLUSH_RENDER_CACHE, fence);
 622 }
 623
 624 void vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float *mat)
 625 {
 626    struct pipe_transfer *buf_transfer;
 627
 628    assert(compositor);
 629
 630    memcpy
 631    (
 632       pipe_buffer_map(compositor->pipe, compositor->fs_const_buf,
 633                       PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD,
 634                       &buf_transfer),
 635                 mat,
 636                 sizeof(struct fragment_shader_consts)
 637    );
 638
 639    pipe_buffer_unmap(compositor->pipe, buf_transfer);
 640 }