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