reactos/dll/opengl/mesa/src/gallium/auxiliary/vl/vl_mc.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_sampler.h"
  33 #include "util/u_draw.h"
  34
  35 #include "tgsi/tgsi_ureg.h"
  36
  37 #include "vl_defines.h"
  38 #include "vl_vertex_buffers.h"
  39 #include "vl_mc.h"
  40 #include "vl_idct.h"
  41
  42 enum VS_OUTPUT
  43 {
  44    VS_O_VPOS,
  45    VS_O_VTOP,
  46    VS_O_VBOTTOM,
  47
  48    VS_O_FLAGS = VS_O_VTOP,
  49    VS_O_VTEX = VS_O_VBOTTOM
  50 };
  51
  52 static struct ureg_dst
  53 calc_position(struct vl_mc *r, struct ureg_program *shader, struct ureg_src block_scale)
  54 {
  55    struct ureg_src vrect, vpos;
  56    struct ureg_dst t_vpos;
  57    struct ureg_dst o_vpos;
  58
  59    vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
  60    vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
  61
  62    t_vpos = ureg_DECL_temporary(shader);
  63
  64    o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
  65
  66    /*
  67     * block_scale = (MACROBLOCK_WIDTH, MACROBLOCK_HEIGHT) / (dst.width, dst.height)
  68     *
  69     * t_vpos = (vpos + vrect) * block_scale
  70     * o_vpos.xy = t_vpos
  71     * o_vpos.zw = vpos
  72     */
  73    ureg_ADD(shader, ureg_writemask(t_vpos, TGSI_WRITEMASK_XY), vpos, vrect);
  74    ureg_MUL(shader, ureg_writemask(t_vpos, TGSI_WRITEMASK_XY), ureg_src(t_vpos), block_scale);
  75    ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(t_vpos));
  76    ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_ZW), ureg_imm1f(shader, 1.0f));
  77
  78    return t_vpos;
  79 }
  80
  81 static struct ureg_dst
  82 calc_line(struct ureg_program *shader)
  83 {
  84    struct ureg_dst tmp;
  85    struct ureg_src pos;
  86
  87    tmp = ureg_DECL_temporary(shader);
  88
  89    pos = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS, TGSI_INTERPOLATE_LINEAR);
  90
  91    /*
  92     * tmp.y = fraction(pos.y / 2) >= 0.5 ? 1 : 0
  93     */
  94    ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), pos, ureg_imm1f(shader, 0.5f));
  95    ureg_FRC(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), ureg_src(tmp));
  96    ureg_SGE(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), ureg_src(tmp), ureg_imm1f(shader, 0.5f));
  97
  98    return tmp;
  99 }
 100
 101 static void *
 102 create_ref_vert_shader(struct vl_mc *r)
 103 {
 104    struct ureg_program *shader;
 105    struct ureg_src mv_scale;
 106    struct ureg_src vmv[2];
 107    struct ureg_dst t_vpos;
 108    struct ureg_dst o_vmv[2];
 109    unsigned i;
 110
 111    shader = ureg_create(TGSI_PROCESSOR_VERTEX);
 112    if (!shader)
 113       return NULL;
 114
 115    vmv[0] = ureg_DECL_vs_input(shader, VS_I_MV_TOP);
 116    vmv[1] = ureg_DECL_vs_input(shader, VS_I_MV_BOTTOM);
 117
 118    t_vpos = calc_position(r, shader, ureg_imm2f(shader,
 119       (float)MACROBLOCK_WIDTH / r->buffer_width,
 120       (float)MACROBLOCK_HEIGHT / r->buffer_height)
 121    );
 122
 123    o_vmv[0] = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTOP);
 124    o_vmv[1] = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VBOTTOM);
 125
 126    /*
 127     * mv_scale.xy = 0.5 / (dst.width, dst.height);
 128     * mv_scale.z = 1.0f / 4.0f
 129     * mv_scale.w = 1.0f / 255.0f
 130     *
 131     * // Apply motion vectors
 132     * o_vmv[0..1].xy = vmv[0..1] * mv_scale + t_vpos
 133     * o_vmv[0..1].zw = vmv[0..1] * mv_scale
 134     *
 135     */
 136
 137    mv_scale = ureg_imm4f(shader,
 138       0.5f / r->buffer_width,
 139       0.5f / r->buffer_height,
 140       1.0f / 4.0f,
 141       1.0f / PIPE_VIDEO_MV_WEIGHT_MAX);
 142
 143    for (i = 0; i < 2; ++i) {
 144       ureg_MAD(shader, ureg_writemask(o_vmv[i], TGSI_WRITEMASK_XY), mv_scale, vmv[i], ureg_src(t_vpos));
 145       ureg_MUL(shader, ureg_writemask(o_vmv[i], TGSI_WRITEMASK_ZW), mv_scale, vmv[i]);
 146    }
 147
 148    ureg_release_temporary(shader, t_vpos);
 149
 150    ureg_END(shader);
 151
 152    return ureg_create_shader_and_destroy(shader, r->pipe);
 153 }
 154
 155 static void *
 156 create_ref_frag_shader(struct vl_mc *r)
 157 {
 158    const float y_scale =
 159       r->buffer_height / 2 *
 160       r->macroblock_size / MACROBLOCK_HEIGHT;
 161
 162    struct ureg_program *shader;
 163    struct ureg_src tc[2], sampler;
 164    struct ureg_dst ref, field;
 165    struct ureg_dst fragment;
 166    unsigned label;
 167
 168    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 169    if (!shader)
 170       return NULL;
 171
 172    tc[0] = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTOP, TGSI_INTERPOLATE_LINEAR);
 173    tc[1] = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VBOTTOM, TGSI_INTERPOLATE_LINEAR);
 174
 175    sampler = ureg_DECL_sampler(shader, 0);
 176    ref = ureg_DECL_temporary(shader);
 177
 178    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 179
 180    field = calc_line(shader);
 181
 182    /*
 183     * ref = field.z ? tc[1] : tc[0]
 184     *
 185     * // Adjust tc acording to top/bottom field selection
 186     * if (|ref.z|) {
 187     *    ref.y *= y_scale
 188     *    ref.y = floor(ref.y)
 189     *    ref.y += ref.z
 190     *    ref.y /= y_scale
 191     * }
 192     * fragment.xyz = tex(ref, sampler[0])
 193     */
 194    ureg_CMP(shader, ureg_writemask(ref, TGSI_WRITEMASK_XYZ),
 195             ureg_negate(ureg_scalar(ureg_src(field), TGSI_SWIZZLE_Y)),
 196             tc[1], tc[0]);
 197    ureg_CMP(shader, ureg_writemask(fragment, TGSI_WRITEMASK_W),
 198             ureg_negate(ureg_scalar(ureg_src(field), TGSI_SWIZZLE_Y)),
 199             tc[1], tc[0]);
 200
 201    ureg_IF(shader, ureg_scalar(ureg_src(ref), TGSI_SWIZZLE_Z), &label);
 202
 203       ureg_MUL(shader, ureg_writemask(ref, TGSI_WRITEMASK_Y),
 204                ureg_src(ref), ureg_imm1f(shader, y_scale));
 205       ureg_FLR(shader, ureg_writemask(ref, TGSI_WRITEMASK_Y), ureg_src(ref));
 206       ureg_ADD(shader, ureg_writemask(ref, TGSI_WRITEMASK_Y),
 207                ureg_src(ref), ureg_scalar(ureg_src(ref), TGSI_SWIZZLE_Z));
 208       ureg_MUL(shader, ureg_writemask(ref, TGSI_WRITEMASK_Y),
 209                ureg_src(ref), ureg_imm1f(shader, 1.0f / y_scale));
 210
 211    ureg_fixup_label(shader, label, ureg_get_instruction_number(shader));
 212    ureg_ENDIF(shader);
 213
 214    ureg_TEX(shader, ureg_writemask(fragment, TGSI_WRITEMASK_XYZ), TGSI_TEXTURE_2D, ureg_src(ref), sampler);
 215
 216    ureg_release_temporary(shader, ref);
 217
 218    ureg_release_temporary(shader, field);
 219    ureg_END(shader);
 220
 221    return ureg_create_shader_and_destroy(shader, r->pipe);
 222 }
 223
 224 static void *
 225 create_ycbcr_vert_shader(struct vl_mc *r, vl_mc_ycbcr_vert_shader vs_callback, void *callback_priv)
 226 {
 227    struct ureg_program *shader;
 228
 229    struct ureg_src vrect, vpos;
 230    struct ureg_dst t_vpos, t_vtex;
 231    struct ureg_dst o_vpos, o_flags;
 232
 233    struct vertex2f scale = {
 234       (float)BLOCK_WIDTH / r->buffer_width * MACROBLOCK_WIDTH / r->macroblock_size,
 235       (float)BLOCK_HEIGHT / r->buffer_height * MACROBLOCK_HEIGHT / r->macroblock_size
 236    };
 237
 238    unsigned label;
 239
 240    shader = ureg_create(TGSI_PROCESSOR_VERTEX);
 241    if (!shader)
 242       return NULL;
 243
 244    vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
 245    vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
 246
 247    t_vpos = calc_position(r, shader, ureg_imm2f(shader, scale.x, scale.y));
 248    t_vtex = ureg_DECL_temporary(shader);
 249
 250    o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
 251    o_flags = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_FLAGS);
 252
 253    /*
 254     * o_vtex.xy = t_vpos
 255     * o_flags.z = intra * 0.5
 256     *
 257     * if(interlaced) {
 258     *    t_vtex.xy = vrect.y ? { 0, scale.y } : { -scale.y : 0 }
 259     *    t_vtex.z = vpos.y % 2
 260     *    t_vtex.y = t_vtex.z ? t_vtex.x : t_vtex.y
 261     *    o_vpos.y = t_vtex.y + t_vpos.y
 262     *
 263     *    o_flags.w = t_vtex.z ? 0 : 1
 264     * }
 265     *
 266     */
 267
 268    vs_callback(callback_priv, r, shader, VS_O_VTEX, t_vpos);
 269
 270    ureg_MUL(shader, ureg_writemask(o_flags, TGSI_WRITEMASK_Z),
 271             ureg_scalar(vpos, TGSI_SWIZZLE_Z), ureg_imm1f(shader, 0.5f));
 272    ureg_MOV(shader, ureg_writemask(o_flags, TGSI_WRITEMASK_W), ureg_imm1f(shader, -1.0f));
 273
 274    if (r->macroblock_size == MACROBLOCK_HEIGHT) { //TODO
 275       ureg_IF(shader, ureg_scalar(vpos, TGSI_SWIZZLE_W), &label);
 276
 277          ureg_CMP(shader, ureg_writemask(t_vtex, TGSI_WRITEMASK_XY),
 278                   ureg_negate(ureg_scalar(vrect, TGSI_SWIZZLE_Y)),
 279                   ureg_imm2f(shader, 0.0f, scale.y),
 280                   ureg_imm2f(shader, -scale.y, 0.0f));
 281          ureg_MUL(shader, ureg_writemask(t_vtex, TGSI_WRITEMASK_Z),
 282                   ureg_scalar(vpos, TGSI_SWIZZLE_Y), ureg_imm1f(shader, 0.5f));
 283
 284          ureg_FRC(shader, ureg_writemask(t_vtex, TGSI_WRITEMASK_Z), ureg_src(t_vtex));
 285
 286          ureg_CMP(shader, ureg_writemask(t_vtex, TGSI_WRITEMASK_Y),
 287                   ureg_negate(ureg_scalar(ureg_src(t_vtex), TGSI_SWIZZLE_Z)),
 288                   ureg_scalar(ureg_src(t_vtex), TGSI_SWIZZLE_X),
 289                   ureg_scalar(ureg_src(t_vtex), TGSI_SWIZZLE_Y));
 290          ureg_ADD(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_Y),
 291                   ureg_src(t_vpos), ureg_src(t_vtex));
 292
 293          ureg_CMP(shader, ureg_writemask(o_flags, TGSI_WRITEMASK_W),
 294                   ureg_negate(ureg_scalar(ureg_src(t_vtex), TGSI_SWIZZLE_Z)),
 295                   ureg_imm1f(shader, 0.0f), ureg_imm1f(shader, 1.0f));
 296
 297       ureg_fixup_label(shader, label, ureg_get_instruction_number(shader));
 298       ureg_ENDIF(shader);
 299    }
 300
 301    ureg_release_temporary(shader, t_vtex);
 302    ureg_release_temporary(shader, t_vpos);
 303
 304    ureg_END(shader);
 305
 306    return ureg_create_shader_and_destroy(shader, r->pipe);
 307 }
 308
 309 static void *
 310 create_ycbcr_frag_shader(struct vl_mc *r, float scale, bool invert,
 311                          vl_mc_ycbcr_frag_shader fs_callback, void *callback_priv)
 312 {
 313    struct ureg_program *shader;
 314    struct ureg_src flags;
 315    struct ureg_dst tmp;
 316    struct ureg_dst fragment;
 317    unsigned label;
 318
 319    shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 320    if (!shader)
 321       return NULL;
 322
 323    flags = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_FLAGS, TGSI_INTERPOLATE_LINEAR);
 324
 325    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 326
 327    tmp = calc_line(shader);
 328
 329    /*
 330     * if (field == tc.w)
 331     *    kill();
 332     * else {
 333     *    fragment.xyz  = tex(tc, sampler) * scale + tc.z
 334     *    fragment.w = 1.0f
 335     * }
 336     */
 337
 338    ureg_SEQ(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y),
 339             ureg_scalar(flags, TGSI_SWIZZLE_W), ureg_src(tmp));
 340
 341    ureg_IF(shader, ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y), &label);
 342
 343       ureg_KILP(shader);
 344
 345    ureg_fixup_label(shader, label, ureg_get_instruction_number(shader));
 346    ureg_ELSE(shader, &label);
 347
 348       fs_callback(callback_priv, r, shader, VS_O_VTEX, tmp);
 349
 350       if (scale != 1.0f)
 351          ureg_MAD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XYZ),
 352                   ureg_src(tmp), ureg_imm1f(shader, scale),
 353                   ureg_scalar(flags, TGSI_SWIZZLE_Z));
 354       else
 355          ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XYZ),
 356                   ureg_src(tmp), ureg_scalar(flags, TGSI_SWIZZLE_Z));
 357
 358       ureg_MUL(shader, ureg_writemask(fragment, TGSI_WRITEMASK_XYZ), ureg_src(tmp), ureg_imm1f(shader, invert ? -1.0f : 1.0f));
 359       ureg_MOV(shader, ureg_writemask(fragment, TGSI_WRITEMASK_W), ureg_imm1f(shader, 1.0f));
 360
 361    ureg_fixup_label(shader, label, ureg_get_instruction_number(shader));
 362    ureg_ENDIF(shader);
 363
 364    ureg_release_temporary(shader, tmp);
 365
 366    ureg_END(shader);
 367
 368    return ureg_create_shader_and_destroy(shader, r->pipe);
 369 }
 370
 371 static bool
 372 init_pipe_state(struct vl_mc *r)
 373 {
 374    struct pipe_sampler_state sampler;
 375    struct pipe_blend_state blend;
 376    struct pipe_rasterizer_state rs_state;
 377    unsigned i;
 378
 379    assert(r);
 380
 381    memset(&sampler, 0, sizeof(sampler));
 382    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 383    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 384    sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_BORDER;
 385    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
 386    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 387    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
 388    sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
 389    sampler.compare_func = PIPE_FUNC_ALWAYS;
 390    sampler.normalized_coords = 1;
 391    r->sampler_ref = r->pipe->create_sampler_state(r->pipe, &sampler);
 392    if (!r->sampler_ref)
 393       goto error_sampler_ref;
 394
 395    for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
 396       memset(&blend, 0, sizeof blend);
 397       blend.independent_blend_enable = 0;
 398       blend.rt[0].blend_enable = 1;
 399       blend.rt[0].rgb_func = PIPE_BLEND_ADD;
 400       blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
 401       blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 402       blend.rt[0].alpha_func = PIPE_BLEND_ADD;
 403       blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
 404       blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 405       blend.logicop_enable = 0;
 406       blend.logicop_func = PIPE_LOGICOP_CLEAR;
 407       blend.rt[0].colormask = i;
 408       blend.dither = 0;
 409       r->blend_clear[i] = r->pipe->create_blend_state(r->pipe, &blend);
 410       if (!r->blend_clear[i])
 411          goto error_blend;
 412
 413       blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
 414       blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
 415       r->blend_add[i] = r->pipe->create_blend_state(r->pipe, &blend);
 416       if (!r->blend_add[i])
 417          goto error_blend;
 418
 419       blend.rt[0].rgb_func = PIPE_BLEND_REVERSE_SUBTRACT;
 420       blend.rt[0].alpha_dst_factor = PIPE_BLEND_REVERSE_SUBTRACT;
 421       r->blend_sub[i] = r->pipe->create_blend_state(r->pipe, &blend);
 422       if (!r->blend_sub[i])
 423          goto error_blend;
 424    }
 425
 426    memset(&rs_state, 0, sizeof(rs_state));
 427    /*rs_state.sprite_coord_enable */
 428    rs_state.sprite_coord_mode = PIPE_SPRITE_COORD_UPPER_LEFT;
 429    rs_state.point_quad_rasterization = true;
 430    rs_state.point_size = BLOCK_WIDTH;
 431    rs_state.gl_rasterization_rules = true;
 432    rs_state.depth_clip = 1;
 433    r->rs_state = r->pipe->create_rasterizer_state(r->pipe, &rs_state);
 434    if (!r->rs_state)
 435       goto error_rs_state;
 436
 437    return true;
 438
 439 error_rs_state:
 440 error_blend:
 441    for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
 442       if (r->blend_sub[i])
 443          r->pipe->delete_blend_state(r->pipe, r->blend_sub[i]);
 444
 445       if (r->blend_add[i])
 446          r->pipe->delete_blend_state(r->pipe, r->blend_add[i]);
 447
 448       if (r->blend_clear[i])
 449          r->pipe->delete_blend_state(r->pipe, r->blend_clear[i]);
 450    }
 451
 452    r->pipe->delete_sampler_state(r->pipe, r->sampler_ref);
 453
 454 error_sampler_ref:
 455    return false;
 456 }
 457
 458 static void
 459 cleanup_pipe_state(struct vl_mc *r)
 460 {
 461    unsigned i;
 462
 463    assert(r);
 464
 465    r->pipe->delete_sampler_state(r->pipe, r->sampler_ref);
 466    for (i = 0; i < VL_MC_NUM_BLENDERS; ++i) {
 467       r->pipe->delete_blend_state(r->pipe, r->blend_clear[i]);
 468       r->pipe->delete_blend_state(r->pipe, r->blend_add[i]);
 469       r->pipe->delete_blend_state(r->pipe, r->blend_sub[i]);
 470    }
 471    r->pipe->delete_rasterizer_state(r->pipe, r->rs_state);
 472 }
 473
 474 bool
 475 vl_mc_init(struct vl_mc *renderer, struct pipe_context *pipe,
 476            unsigned buffer_width, unsigned buffer_height,
 477            unsigned macroblock_size, float scale,
 478            vl_mc_ycbcr_vert_shader vs_callback,
 479            vl_mc_ycbcr_frag_shader fs_callback,
 480            void *callback_priv)
 481 {
 482    assert(renderer);
 483    assert(pipe);
 484
 485    memset(renderer, 0, sizeof(struct vl_mc));
 486
 487    renderer->pipe = pipe;
 488    renderer->buffer_width = buffer_width;
 489    renderer->buffer_height = buffer_height;
 490    renderer->macroblock_size = macroblock_size;
 491
 492    if (!init_pipe_state(renderer))
 493       goto error_pipe_state;
 494
 495    renderer->vs_ref = create_ref_vert_shader(renderer);
 496    if (!renderer->vs_ref)
 497       goto error_vs_ref;
 498
 499    renderer->vs_ycbcr = create_ycbcr_vert_shader(renderer, vs_callback, callback_priv);
 500    if (!renderer->vs_ycbcr)
 501       goto error_vs_ycbcr;
 502
 503    renderer->fs_ref = create_ref_frag_shader(renderer);
 504    if (!renderer->fs_ref)
 505       goto error_fs_ref;
 506
 507    renderer->fs_ycbcr = create_ycbcr_frag_shader(renderer, scale, false, fs_callback, callback_priv);
 508    if (!renderer->fs_ycbcr)
 509       goto error_fs_ycbcr;
 510
 511    renderer->fs_ycbcr_sub = create_ycbcr_frag_shader(renderer, scale, true, fs_callback, callback_priv);
 512    if (!renderer->fs_ycbcr_sub)
 513       goto error_fs_ycbcr_sub;
 514
 515    return true;
 516
 517 error_fs_ycbcr_sub:
 518    renderer->pipe->delete_fs_state(renderer->pipe, renderer->fs_ycbcr);
 519
 520 error_fs_ycbcr:
 521    renderer->pipe->delete_fs_state(renderer->pipe, renderer->fs_ref);
 522
 523 error_fs_ref:
 524    renderer->pipe->delete_vs_state(renderer->pipe, renderer->vs_ycbcr);
 525
 526 error_vs_ycbcr:
 527    renderer->pipe->delete_vs_state(renderer->pipe, renderer->vs_ref);
 528
 529 error_vs_ref:
 530    cleanup_pipe_state(renderer);
 531
 532 error_pipe_state:
 533    return false;
 534 }
 535
 536 void
 537 vl_mc_cleanup(struct vl_mc *renderer)
 538 {
 539    assert(renderer);
 540
 541    cleanup_pipe_state(renderer);
 542
 543    renderer->pipe->delete_vs_state(renderer->pipe, renderer->vs_ref);
 544    renderer->pipe->delete_vs_state(renderer->pipe, renderer->vs_ycbcr);
 545    renderer->pipe->delete_fs_state(renderer->pipe, renderer->fs_ref);
 546    renderer->pipe->delete_fs_state(renderer->pipe, renderer->fs_ycbcr);
 547    renderer->pipe->delete_fs_state(renderer->pipe, renderer->fs_ycbcr_sub);
 548 }
 549
 550 bool
 551 vl_mc_init_buffer(struct vl_mc *renderer, struct vl_mc_buffer *buffer)
 552 {
 553    assert(renderer && buffer);
 554
 555    buffer->viewport.scale[2] = 1;
 556    buffer->viewport.scale[3] = 1;
 557    buffer->viewport.translate[0] = 0;
 558    buffer->viewport.translate[1] = 0;
 559    buffer->viewport.translate[2] = 0;
 560    buffer->viewport.translate[3] = 0;
 561
 562    buffer->fb_state.nr_cbufs = 1;
 563    buffer->fb_state.zsbuf = NULL;
 564
 565    return true;
 566 }
 567
 568 void
 569 vl_mc_cleanup_buffer(struct vl_mc_buffer *buffer)
 570 {
 571    assert(buffer);
 572 }
 573
 574 void
 575 vl_mc_set_surface(struct vl_mc_buffer *buffer, struct pipe_surface *surface)
 576 {
 577    assert(buffer && surface);
 578
 579    buffer->surface_cleared = false;
 580
 581    buffer->viewport.scale[0] = surface->width;
 582    buffer->viewport.scale[1] = surface->height;
 583
 584    buffer->fb_state.width = surface->width;
 585    buffer->fb_state.height = surface->height;
 586    buffer->fb_state.cbufs[0] = surface;
 587 }
 588
 589 static void
 590 prepare_pipe_4_rendering(struct vl_mc *renderer, struct vl_mc_buffer *buffer, unsigned mask)
 591 {
 592    assert(buffer);
 593
 594    renderer->pipe->bind_rasterizer_state(renderer->pipe, renderer->rs_state);
 595
 596    if (buffer->surface_cleared)
 597       renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_add[mask]);
 598    else
 599       renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_clear[mask]);
 600
 601    renderer->pipe->set_framebuffer_state(renderer->pipe, &buffer->fb_state);
 602    renderer->pipe->set_viewport_state(renderer->pipe, &buffer->viewport);
 603 }
 604
 605 void
 606 vl_mc_render_ref(struct vl_mc *renderer, struct vl_mc_buffer *buffer, struct pipe_sampler_view *ref)
 607 {
 608    assert(buffer && ref);
 609
 610    prepare_pipe_4_rendering(renderer, buffer, PIPE_MASK_R | PIPE_MASK_G | PIPE_MASK_B);
 611
 612    renderer->pipe->bind_vs_state(renderer->pipe, renderer->vs_ref);
 613    renderer->pipe->bind_fs_state(renderer->pipe, renderer->fs_ref);
 614
 615    renderer->pipe->set_fragment_sampler_views(renderer->pipe, 1, &ref);
 616    renderer->pipe->bind_fragment_sampler_states(renderer->pipe, 1, &renderer->sampler_ref);
 617
 618    util_draw_arrays_instanced(renderer->pipe, PIPE_PRIM_QUADS, 0, 4, 0,
 619                               renderer->buffer_width / MACROBLOCK_WIDTH *
 620                               renderer->buffer_height / MACROBLOCK_HEIGHT);
 621
 622    buffer->surface_cleared = true;
 623 }
 624
 625 void
 626 vl_mc_render_ycbcr(struct vl_mc *renderer, struct vl_mc_buffer *buffer, unsigned component, unsigned num_instances)
 627 {
 628    unsigned mask = 1 << component;
 629
 630    assert(buffer);
 631
 632    if (num_instances == 0)
 633       return;
 634
 635    prepare_pipe_4_rendering(renderer, buffer, mask);
 636
 637    renderer->pipe->bind_vs_state(renderer->pipe, renderer->vs_ycbcr);
 638    renderer->pipe->bind_fs_state(renderer->pipe, renderer->fs_ycbcr);
 639
 640    util_draw_arrays_instanced(renderer->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
 641
 642    if (buffer->surface_cleared) {
 643       renderer->pipe->bind_blend_state(renderer->pipe, renderer->blend_sub[mask]);
 644       renderer->pipe->bind_fs_state(renderer->pipe, renderer->fs_ycbcr_sub);
 645       util_draw_arrays_instanced(renderer->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
 646    }
 647 }