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 <assert.h>
  29
  30 #include <pipe/p_context.h>
  31
  32 #include <util/u_memory.h>
  33 #include <util/u_draw.h>
  34
  35 #include <tgsi/tgsi_ureg.h>
  36
  37 #include "vl_csc.h"
  38 #include "vl_types.h"
  39 #include "vl_compositor.h"
  40
  41 typedef float csc_matrix[16];
  42
  43 static void *
  44 create_vert_shader(struct vl_compositor *c)
  45 {
  46    struct ureg_program *shader;
  47    struct ureg_src vpos, vtex;
  48    struct ureg_dst o_vpos, o_vtex;
  49
  50    shader = ureg_create(TGSI_PROCESSOR_VERTEX);
  51    if (!shader)
  52       return false;
  53
  54    vpos = ureg_DECL_vs_input(shader, 0);
  55    vtex = ureg_DECL_vs_input(shader, 1);
  56    o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, 0);
  57    o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, 1);
  58
  59    /*
  60     * o_vpos = vpos
  61     * o_vtex = vtex
  62     */
  63    ureg_MOV(shader, o_vpos, vpos);
  64    ureg_MOV(shader, o_vtex, vtex);
  65
  66    ureg_END(shader);
  67
  68    return ureg_create_shader_and_destroy(shader, c->pipe);
  69 }
  70
  71 static void *
  72 create_frag_shader_video_buffer(struct vl_compositor *c)
  73 {
  74    struct ureg_program *shader;
  75    struct ureg_src tc;
  76    struct ureg_src csc[3];
  77    struct ureg_src sampler[3];
  78    struct ureg_dst texel;
  79    struct ureg_dst fragment;
  80    unsigned i;
  81
  82    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
  83    if (!shader)
  84       return false;
  85
  86    tc = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, 1, TGSI_INTERPOLATE_LINEAR);
  87    for (i = 0; i < 3; ++i) {
  88       csc[i] = ureg_DECL_constant(shader, i);
  89       sampler[i] = ureg_DECL_sampler(shader, i);
  90    }
  91    texel = ureg_DECL_temporary(shader);
  92    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
  93
  94    /*
  95     * texel.xyz = tex(tc, sampler[i])
  96     * fragment = csc * texel
  97     */
  98    for (i = 0; i < 3; ++i)
  99       ureg_TEX(shader, ureg_writemask(texel, TGSI_WRITEMASK_X << i), TGSI_TEXTURE_2D, tc, sampler[i]);
 100
 101    ureg_MOV(shader, ureg_writemask(texel, TGSI_WRITEMASK_W), ureg_imm1f(shader, 1.0f));
 102
 103    for (i = 0; i < 3; ++i)
 104       ureg_DP4(shader, ureg_writemask(fragment, TGSI_WRITEMASK_X << i), csc[i], ureg_src(texel));
 105
 106    ureg_MOV(shader, ureg_writemask(fragment, TGSI_WRITEMASK_W), ureg_imm1f(shader, 1.0f));
 107
 108    ureg_release_temporary(shader, texel);
 109    ureg_END(shader);
 110
 111    return ureg_create_shader_and_destroy(shader, c->pipe);
 112 }
 113
 114 static void *
 115 create_frag_shader_palette(struct vl_compositor *c)
 116 {
 117    struct ureg_program *shader;
 118    struct ureg_src tc;
 119    struct ureg_src sampler;
 120    struct ureg_src palette;
 121    struct ureg_dst texel;
 122    struct ureg_dst fragment;
 123
 124    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 125    if (!shader)
 126       return false;
 127
 128    tc = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, 1, TGSI_INTERPOLATE_LINEAR);
 129    sampler = ureg_DECL_sampler(shader, 0);
 130    palette = ureg_DECL_sampler(shader, 1);
 131    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 132    texel = ureg_DECL_temporary(shader);
 133
 134    /*
 135     * texel = tex(tc, sampler)
 136     * fragment.xyz = tex(texel, palette)
 137     * fragment.a = texel.a
 138     */
 139    ureg_TEX(shader, texel, TGSI_TEXTURE_2D, tc, sampler);
 140    ureg_TEX(shader, fragment, TGSI_TEXTURE_1D, ureg_src(texel), palette);
 141    ureg_MOV(shader, ureg_writemask(fragment, TGSI_WRITEMASK_W), ureg_src(texel));
 142
 143    ureg_release_temporary(shader, texel);
 144    ureg_END(shader);
 145
 146    return ureg_create_shader_and_destroy(shader, c->pipe);
 147 }
 148
 149 static void *
 150 create_frag_shader_rgba(struct vl_compositor *c)
 151 {
 152    struct ureg_program *shader;
 153    struct ureg_src tc;
 154    struct ureg_src sampler;
 155    struct ureg_dst fragment;
 156
 157    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 158    if (!shader)
 159       return false;
 160
 161    tc = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, 1, TGSI_INTERPOLATE_LINEAR);
 162    sampler = ureg_DECL_sampler(shader, 0);
 163    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 164
 165    /*
 166     * fragment = tex(tc, sampler)
 167     */
 168    ureg_TEX(shader, fragment, TGSI_TEXTURE_2D, tc, sampler);
 169    ureg_END(shader);
 170
 171    return ureg_create_shader_and_destroy(shader, c->pipe);
 172 }
 173
 174 static bool
 175 init_shaders(struct vl_compositor *c)
 176 {
 177    assert(c);
 178
 179    c->vs = create_vert_shader(c);
 180    if (!c->vs) {
 181       debug_printf("Unable to create vertex shader.\n");
 182       return false;
 183    }
 184
 185    c->fs_video_buffer = create_frag_shader_video_buffer(c);
 186    if (!c->fs_video_buffer) {
 187       debug_printf("Unable to create YCbCr-to-RGB fragment shader.\n");
 188       return false;
 189    }
 190
 191    c->fs_palette = create_frag_shader_palette(c);
 192    if (!c->fs_palette) {
 193       debug_printf("Unable to create Palette-to-RGB fragment shader.\n");
 194       return false;
 195    }
 196
 197    c->fs_rgba = create_frag_shader_rgba(c);
 198    if (!c->fs_rgba) {
 199       debug_printf("Unable to create RGB-to-RGB fragment shader.\n");
 200       return false;
 201    }
 202
 203    return true;
 204 }
 205
 206 static void cleanup_shaders(struct vl_compositor *c)
 207 {
 208    assert(c);
 209
 210    c->pipe->delete_vs_state(c->pipe, c->vs);
 211    c->pipe->delete_fs_state(c->pipe, c->fs_video_buffer);
 212    c->pipe->delete_fs_state(c->pipe, c->fs_palette);
 213    c->pipe->delete_fs_state(c->pipe, c->fs_rgba);
 214 }
 215
 216 static bool
 217 init_pipe_state(struct vl_compositor *c)
 218 {
 219    struct pipe_rasterizer_state rast;
 220    struct pipe_sampler_state sampler;
 221    struct pipe_blend_state blend;
 222
 223    assert(c);
 224
 225    c->fb_state.nr_cbufs = 1;
 226    c->fb_state.zsbuf = NULL;
 227
 228    c->viewport.scale[2] = 1;
 229    c->viewport.scale[3] = 1;
 230    c->viewport.translate[0] = 0;
 231    c->viewport.translate[1] = 0;
 232    c->viewport.translate[2] = 0;
 233    c->viewport.translate[3] = 0;
 234
 235    memset(&sampler, 0, sizeof(sampler));
 236    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 237    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 238    sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 239    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
 240    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 241    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
 242    sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
 243    sampler.compare_func = PIPE_FUNC_ALWAYS;
 244    sampler.normalized_coords = 1;
 245    /*sampler.lod_bias = ;*/
 246    /*sampler.min_lod = ;*/
 247    /*sampler.max_lod = ;*/
 248    /*sampler.border_color[i] = ;*/
 249    /*sampler.max_anisotropy = ;*/
 250    c->sampler = c->pipe->create_sampler_state(c->pipe, &sampler);
 251
 252    memset(&blend, 0, sizeof blend);
 253    blend.independent_blend_enable = 0;
 254    blend.rt[0].blend_enable = 1;
 255    blend.rt[0].rgb_func = PIPE_BLEND_ADD;
 256    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
 257    blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_INV_SRC_ALPHA;
 258    blend.rt[0].alpha_func = PIPE_BLEND_ADD;
 259    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 260    blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
 261    blend.logicop_enable = 0;
 262    blend.logicop_func = PIPE_LOGICOP_CLEAR;
 263    blend.rt[0].colormask = PIPE_MASK_RGBA;
 264    blend.dither = 0;
 265    c->blend = c->pipe->create_blend_state(c->pipe, &blend);
 266
 267    memset(&rast, 0, sizeof rast);
 268    rast.flatshade = 1;
 269    rast.front_ccw = 1;
 270    rast.cull_face = PIPE_FACE_NONE;
 271    rast.fill_back = PIPE_POLYGON_MODE_FILL;
 272    rast.fill_front = PIPE_POLYGON_MODE_FILL;
 273    rast.scissor = 1;
 274    rast.line_width = 1;
 275    rast.point_size_per_vertex = 1;
 276    rast.offset_units = 1;
 277    rast.offset_scale = 1;
 278    rast.gl_rasterization_rules = 1;
 279
 280    c->rast = c->pipe->create_rasterizer_state(c->pipe, &rast);
 281
 282    return true;
 283 }
 284
 285 static void cleanup_pipe_state(struct vl_compositor *c)
 286 {
 287    assert(c);
 288
 289    c->pipe->delete_sampler_state(c->pipe, c->sampler);
 290    c->pipe->delete_blend_state(c->pipe, c->blend);
 291    c->pipe->delete_rasterizer_state(c->pipe, c->rast);
 292 }
 293
 294 static bool
 295 init_buffers(struct vl_compositor *c)
 296 {
 297    struct pipe_vertex_element vertex_elems[2];
 298
 299    assert(c);
 300
 301    /*
 302     * Create our vertex buffer and vertex buffer elements
 303     */
 304    c->vertex_buf.stride = sizeof(struct vertex4f);
 305    c->vertex_buf.buffer_offset = 0;
 306    c->vertex_buf.buffer = pipe_buffer_create
 307    (
 308       c->pipe->screen,
 309       PIPE_BIND_VERTEX_BUFFER,
 310       PIPE_USAGE_STREAM,
 311       sizeof(struct vertex4f) * (VL_COMPOSITOR_MAX_LAYERS + 1) * 4
 312    );
 313
 314    vertex_elems[0].src_offset = 0;
 315    vertex_elems[0].instance_divisor = 0;
 316    vertex_elems[0].vertex_buffer_index = 0;
 317    vertex_elems[0].src_format = PIPE_FORMAT_R32G32_FLOAT;
 318    vertex_elems[1].src_offset = sizeof(struct vertex2f);
 319    vertex_elems[1].instance_divisor = 0;
 320    vertex_elems[1].vertex_buffer_index = 0;
 321    vertex_elems[1].src_format = PIPE_FORMAT_R32G32_FLOAT;
 322    c->vertex_elems_state = c->pipe->create_vertex_elements_state(c->pipe, 2, vertex_elems);
 323
 324    /*
 325     * Create our fragment shader's constant buffer
 326     * Const buffer contains the color conversion matrix and bias vectors
 327     */
 328    /* XXX: Create with IMMUTABLE/STATIC... although it does change every once in a long while... */
 329    c->csc_matrix = pipe_buffer_create
 330    (
 331       c->pipe->screen,
 332       PIPE_BIND_CONSTANT_BUFFER,
 333       PIPE_USAGE_STATIC,
 334       sizeof(csc_matrix)
 335    );
 336
 337    return true;
 338 }
 339
 340 static void
 341 cleanup_buffers(struct vl_compositor *c)
 342 {
 343    assert(c);
 344
 345    c->pipe->delete_vertex_elements_state(c->pipe, c->vertex_elems_state);
 346    pipe_resource_reference(&c->vertex_buf.buffer, NULL);
 347    pipe_resource_reference(&c->csc_matrix, NULL);
 348 }
 349
 350 static inline struct pipe_video_rect
 351 default_rect(struct vl_compositor_layer *layer)
 352 {
 353    struct pipe_resource *res = layer->sampler_views[0]->texture;
 354    struct pipe_video_rect rect = { 0, 0, res->width0, res->height0 };
 355    return rect;
 356 }
 357
 358 static void
 359 gen_rect_verts(struct vertex4f *vb,
 360                struct pipe_video_rect *src_rect,
 361                struct vertex2f *src_inv_size,
 362                struct pipe_video_rect *dst_rect,
 363                struct vertex2f *dst_inv_size)
 364 {
 365    assert(vb);
 366    assert(src_rect && src_inv_size);
 367    assert(dst_rect && dst_inv_size);
 368
 369    vb[0].x = dst_rect->x * dst_inv_size->x;
 370    vb[0].y = dst_rect->y * dst_inv_size->y;
 371    vb[0].z = src_rect->x * src_inv_size->x;
 372    vb[0].w = src_rect->y * src_inv_size->y;
 373
 374    vb[1].x = (dst_rect->x + dst_rect->w) * dst_inv_size->x;
 375    vb[1].y = dst_rect->y * dst_inv_size->y;
 376    vb[1].z = (src_rect->x + src_rect->w) * src_inv_size->x;
 377    vb[1].w = src_rect->y * src_inv_size->y;
 378
 379    vb[2].x = (dst_rect->x + dst_rect->w) * dst_inv_size->x;
 380    vb[2].y = (dst_rect->y + dst_rect->h) * dst_inv_size->y;
 381    vb[2].z = (src_rect->x + src_rect->w) * src_inv_size->x;
 382    vb[2].w = (src_rect->y + src_rect->h) * src_inv_size->y;
 383
 384    vb[3].x = dst_rect->x * dst_inv_size->x;
 385    vb[3].y = (dst_rect->y + dst_rect->h) * dst_inv_size->y;
 386    vb[3].z = src_rect->x * src_inv_size->x;
 387    vb[3].w = (src_rect->y + src_rect->h) * src_inv_size->y;
 388 }
 389
 390 static void
 391 gen_vertex_data(struct vl_compositor *c)
 392 {
 393    struct vertex4f *vb;
 394    struct pipe_transfer *buf_transfer;
 395    unsigned i;
 396
 397    assert(c);
 398
 399    vb = pipe_buffer_map(c->pipe, c->vertex_buf.buffer,
 400                         PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD | PIPE_TRANSFER_DONTBLOCK,
 401                         &buf_transfer);
 402
 403    if (!vb)
 404       return;
 405
 406    for (i = 0; i < VL_COMPOSITOR_MAX_LAYERS; i++) {
 407       if (c->used_layers & (1 << i)) {
 408          struct pipe_sampler_view *sv = c->layers[i].sampler_views[0];
 409          struct vertex2f src_inv_size = {1.0f / sv->texture->width0, 1.0f / sv->texture->height0};
 410
 411          gen_rect_verts(vb, &c->layers[i].src_rect, &src_inv_size, &c->layers[i].dst_rect, &src_inv_size);
 412
 413          vb += 4;
 414       }
 415    }
 416
 417    pipe_buffer_unmap(c->pipe, buf_transfer);
 418 }
 419
 420 static void
 421 draw_layers(struct vl_compositor *c)
 422 {
 423    unsigned vb_index, i;
 424
 425    assert(c);
 426
 427    for (i = 0, vb_index = 0; i < VL_COMPOSITOR_MAX_LAYERS; ++i) {
 428       if (c->used_layers & (1 << i)) {
 429          struct pipe_sampler_view **samplers = &c->layers[i].sampler_views[0];
 430          unsigned num_sampler_views = !samplers[1] ? 1 : !samplers[2] ? 2 : 3;
 431
 432          c->pipe->bind_fs_state(c->pipe, c->layers[i].fs);
 433          c->pipe->set_fragment_sampler_views(c->pipe, num_sampler_views, samplers);
 434          util_draw_arrays(c->pipe, PIPE_PRIM_QUADS, vb_index * 4, 4);
 435          vb_index++;
 436       }
 437    }
 438 }
 439
 440 static void
 441 vl_compositor_clear_layers(struct pipe_video_compositor *compositor)
 442 {
 443    struct vl_compositor *c = (struct vl_compositor *)compositor;
 444    unsigned i, j;
 445
 446    assert(compositor);
 447
 448    c->used_layers = 0;
 449    for ( i = 0; i < VL_COMPOSITOR_MAX_LAYERS; ++i) {
 450       c->layers[i].fs = NULL;
 451       for ( j = 0; j < 3; j++)
 452          pipe_sampler_view_reference(&c->layers[i].sampler_views[j], NULL);
 453    }
 454 }
 455
 456 static void
 457 vl_compositor_destroy(struct pipe_video_compositor *compositor)
 458 {
 459    struct vl_compositor *c = (struct vl_compositor *)compositor;
 460    assert(compositor);
 461
 462    vl_compositor_clear_layers(compositor);
 463
 464    cleanup_buffers(c);
 465    cleanup_shaders(c);
 466    cleanup_pipe_state(c);
 467
 468    FREE(compositor);
 469 }
 470
 471 static void
 472 vl_compositor_set_csc_matrix(struct pipe_video_compositor *compositor, const float matrix[16])
 473 {
 474    struct vl_compositor *c = (struct vl_compositor *)compositor;
 475    struct pipe_transfer *buf_transfer;
 476
 477    assert(compositor);
 478
 479    memcpy
 480    (
 481       pipe_buffer_map(c->pipe, c->csc_matrix,
 482                       PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD,
 483                       &buf_transfer),
 484                 matrix,
 485                 sizeof(csc_matrix)
 486    );
 487
 488    pipe_buffer_unmap(c->pipe, buf_transfer);
 489 }
 490
 491 static void
 492 vl_compositor_set_buffer_layer(struct pipe_video_compositor *compositor,
 493                                unsigned layer,
 494                                struct pipe_video_buffer *buffer,
 495                                struct pipe_video_rect *src_rect,
 496                                struct pipe_video_rect *dst_rect)
 497 {
 498    struct vl_compositor *c = (struct vl_compositor *)compositor;
 499    struct pipe_sampler_view **sampler_views;
 500    unsigned i;
 501
 502    assert(compositor && buffer);
 503
 504    assert(layer < VL_COMPOSITOR_MAX_LAYERS);
 505
 506    c->used_layers |= 1 << layer;
 507    c->layers[layer].fs = c->fs_video_buffer;
 508
 509    sampler_views = buffer->get_sampler_views(buffer);
 510    for (i = 0; i < 3; ++i)
 511       pipe_sampler_view_reference(&c->layers[layer].sampler_views[i], sampler_views[i]);
 512
 513    c->layers[layer].src_rect = src_rect ? *src_rect : default_rect(&c->layers[layer]);
 514    c->layers[layer].dst_rect = dst_rect ? *dst_rect : default_rect(&c->layers[layer]);
 515 }
 516
 517 static void
 518 vl_compositor_set_palette_layer(struct pipe_video_compositor *compositor,
 519                                 unsigned layer,
 520                                 struct pipe_sampler_view *indexes,
 521                                 struct pipe_sampler_view *palette,
 522                                 struct pipe_video_rect *src_rect,
 523                                 struct pipe_video_rect *dst_rect)
 524 {
 525    struct vl_compositor *c = (struct vl_compositor *)compositor;
 526    assert(compositor && indexes && palette);
 527
 528    assert(layer < VL_COMPOSITOR_MAX_LAYERS);
 529
 530    c->used_layers |= 1 << layer;
 531    c->layers[layer].fs = c->fs_palette;
 532    pipe_sampler_view_reference(&c->layers[layer].sampler_views[0], indexes);
 533    pipe_sampler_view_reference(&c->layers[layer].sampler_views[1], palette);
 534    pipe_sampler_view_reference(&c->layers[layer].sampler_views[2], NULL);
 535    c->layers[layer].src_rect = src_rect ? *src_rect : default_rect(&c->layers[layer]);
 536    c->layers[layer].dst_rect = dst_rect ? *dst_rect : default_rect(&c->layers[layer]);
 537 }
 538
 539 static void
 540 vl_compositor_set_rgba_layer(struct pipe_video_compositor *compositor,
 541                              unsigned layer,
 542                              struct pipe_sampler_view *rgba,
 543                              struct pipe_video_rect *src_rect,
 544                              struct pipe_video_rect *dst_rect)
 545 {
 546    struct vl_compositor *c = (struct vl_compositor *)compositor;
 547    assert(compositor && rgba);
 548
 549    assert(layer < VL_COMPOSITOR_MAX_LAYERS);
 550
 551    c->used_layers |= 1 << layer;
 552    c->layers[layer].fs = c->fs_rgba;
 553    pipe_sampler_view_reference(&c->layers[layer].sampler_views[0], rgba);
 554    pipe_sampler_view_reference(&c->layers[layer].sampler_views[1], NULL);
 555    pipe_sampler_view_reference(&c->layers[layer].sampler_views[2], NULL);
 556    c->layers[layer].src_rect = src_rect ? *src_rect : default_rect(&c->layers[layer]);
 557    c->layers[layer].dst_rect = dst_rect ? *dst_rect : default_rect(&c->layers[layer]);
 558 }
 559
 560 static void
 561 vl_compositor_render(struct pipe_video_compositor *compositor,
 562                      enum pipe_mpeg12_picture_type picture_type,
 563                      struct pipe_surface           *dst_surface,
 564                      struct pipe_video_rect        *dst_area,
 565                      struct pipe_fence_handle      **fence)
 566 {
 567    struct vl_compositor *c = (struct vl_compositor *)compositor;
 568    struct pipe_scissor_state scissor;
 569    void *samplers[3];
 570
 571    assert(compositor);
 572    assert(dst_surface);
 573
 574    c->fb_state.width = dst_surface->width;
 575    c->fb_state.height = dst_surface->height;
 576    c->fb_state.cbufs[0] = dst_surface;
 577
 578    c->viewport.scale[0] = dst_surface->width;
 579    c->viewport.scale[1] = dst_surface->height;
 580
 581    if (dst_area) {
 582       scissor.minx = dst_area->x;
 583       scissor.miny = dst_area->y;
 584       scissor.maxx = dst_area->x + dst_area->w;
 585       scissor.maxy = dst_area->y + dst_area->h;
 586    } else {
 587       scissor.minx = 0;
 588       scissor.miny = 0;
 589       scissor.maxx = dst_surface->width;
 590       scissor.maxy = dst_surface->height;
 591    }
 592
 593    samplers[0] = samplers[1] = samplers[2] = c->sampler;
 594
 595    gen_vertex_data(c);
 596
 597    c->pipe->set_scissor_state(c->pipe, &scissor);
 598    c->pipe->set_framebuffer_state(c->pipe, &c->fb_state);
 599    c->pipe->set_viewport_state(c->pipe, &c->viewport);
 600    c->pipe->bind_fragment_sampler_states(c->pipe, 3, &samplers[0]);
 601    c->pipe->bind_vs_state(c->pipe, c->vs);
 602    c->pipe->set_vertex_buffers(c->pipe, 1, &c->vertex_buf);
 603    c->pipe->bind_vertex_elements_state(c->pipe, c->vertex_elems_state);
 604    c->pipe->set_constant_buffer(c->pipe, PIPE_SHADER_FRAGMENT, 0, c->csc_matrix);
 605    c->pipe->bind_blend_state(c->pipe, c->blend);
 606    c->pipe->bind_rasterizer_state(c->pipe, c->rast);
 607
 608    draw_layers(c);
 609
 610    c->pipe->flush(c->pipe, fence);
 611 }
 612
 613 struct pipe_video_compositor *
 614 vl_compositor_init(struct pipe_video_context *vpipe, struct pipe_context *pipe)
 615 {
 616    csc_matrix csc_matrix;
 617    struct vl_compositor *compositor;
 618
 619    compositor = CALLOC_STRUCT(vl_compositor);
 620
 621    compositor->base.context = vpipe;
 622    compositor->base.destroy = vl_compositor_destroy;
 623    compositor->base.set_csc_matrix = vl_compositor_set_csc_matrix;
 624    compositor->base.clear_layers = vl_compositor_clear_layers;
 625    compositor->base.set_buffer_layer = vl_compositor_set_buffer_layer;
 626    compositor->base.set_palette_layer = vl_compositor_set_palette_layer;
 627    compositor->base.set_rgba_layer = vl_compositor_set_rgba_layer;
 628    compositor->base.render_picture = vl_compositor_render;
 629
 630    compositor->pipe = pipe;
 631
 632    if (!init_pipe_state(compositor))
 633       return false;
 634
 635    if (!init_shaders(compositor)) {
 636       cleanup_pipe_state(compositor);
 637       return false;
 638    }
 639    if (!init_buffers(compositor)) {
 640       cleanup_shaders(compositor);
 641       cleanup_pipe_state(compositor);
 642       return false;
 643    }
 644
 645    vl_compositor_clear_layers(&compositor->base);
 646
 647    vl_csc_get_matrix(VL_CSC_COLOR_STANDARD_IDENTITY, NULL, true, csc_matrix);
 648    vl_compositor_set_csc_matrix(&compositor->base, csc_matrix);
 649
 650    return &compositor->base;
 651 }