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