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