src/gallium/state_trackers/xorg/xorg_renderer.c

   1 #include "xorg_exa.h"
   2 #include "xorg_renderer.h"
   3
   4 #include "xorg_exa_tgsi.h"
   5
   6 #include "cso_cache/cso_context.h"
   7 #include "util/u_draw_quad.h"
   8 #include "util/u_math.h"
   9 #include "util/u_memory.h"
  10 #include "util/u_rect.h"
  11 #include "util/u_sampler.h"
  12 #include "util/u_surface.h"
  13
  14 #include "util/u_inlines.h"
  15
  16 #include <math.h>
  17
  18 #define floatsEqual(x, y) (fabs(x - y) <= 0.00001f * MIN2(fabs(x), fabs(y)))
  19 #define floatIsZero(x) (floatsEqual((x) + 1, 1))
  20
  21 #define NUM_COMPONENTS 4
  22
  23 static INLINE boolean is_affine(float *matrix)
  24 {
  25    return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
  26       && floatsEqual(matrix[8], 1);
  27 }
  28 static INLINE void map_point(float *mat, float x, float y,
  29                              float *out_x, float *out_y)
  30 {
  31    if (!mat) {
  32       *out_x = x;
  33       *out_y = y;
  34       return;
  35    }
  36
  37    *out_x = mat[0]*x + mat[3]*y + mat[6];
  38    *out_y = mat[1]*x + mat[4]*y + mat[7];
  39    if (!is_affine(mat)) {
  40       float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
  41       *out_x *= w;
  42       *out_y *= w;
  43    }
  44 }
  45
  46 static INLINE struct pipe_resource *
  47 renderer_buffer_create(struct xorg_renderer *r)
  48 {
  49    struct pipe_resource *buf =
  50       pipe_user_buffer_create(r->pipe->screen,
  51                               r->buffer,
  52                               sizeof(float)*
  53                               r->buffer_size,
  54 /* XXX was: PIPE_BUFFER_USAGE_PIXEL/PIPE_BUFFER_USAGE_GPU_WRITE even though this is a vertex buffer??? */
  55                               PIPE_BIND_VERTEX_BUFFER);
  56    r->buffer_size = 0;
  57
  58    return buf;
  59 }
  60
  61 static INLINE void
  62 renderer_draw(struct xorg_renderer *r)
  63 {
  64    struct pipe_context *pipe = r->pipe;
  65    struct pipe_resource *buf = 0;
  66    int num_verts = r->buffer_size/(r->attrs_per_vertex * NUM_COMPONENTS);
  67
  68    if (!r->buffer_size)
  69       return;
  70
  71    buf = renderer_buffer_create(r);
  72
  73
  74    if (buf) {
  75       cso_set_vertex_elements(r->cso, r->attrs_per_vertex, r->velems);
  76
  77       util_draw_vertex_buffer(pipe, buf, 0,
  78                               PIPE_PRIM_QUADS,
  79                               num_verts,  /* verts */
  80                               r->attrs_per_vertex); /* attribs/vert */
  81
  82       pipe_resource_reference(&buf, NULL);
  83    }
  84 }
  85
  86 static INLINE void
  87 renderer_draw_conditional(struct xorg_renderer *r,
  88                           int next_batch)
  89 {
  90    if (r->buffer_size + next_batch >= BUF_SIZE ||
  91        (next_batch == 0 && r->buffer_size)) {
  92       renderer_draw(r);
  93    }
  94 }
  95
  96 static void
  97 renderer_init_state(struct xorg_renderer *r)
  98 {
  99    struct pipe_depth_stencil_alpha_state dsa;
 100    struct pipe_rasterizer_state raster;
 101    unsigned i;
 102
 103    /* set common initial clip state */
 104    memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
 105    cso_set_depth_stencil_alpha(r->cso, &dsa);
 106
 107
 108    /* XXX: move to renderer_init_state? */
 109    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 110    raster.gl_rasterization_rules = 1;
 111    cso_set_rasterizer(r->cso, &raster);
 112
 113    /* vertex elements state */
 114    memset(&r->velems[0], 0, sizeof(r->velems[0]) * 3);
 115    for (i = 0; i < 3; i++) {
 116       r->velems[i].src_offset = i * 4 * sizeof(float);
 117       r->velems[i].instance_divisor = 0;
 118       r->velems[i].vertex_buffer_index = 0;
 119       r->velems[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 120    }
 121 }
 122
 123
 124 static INLINE void
 125 add_vertex_color(struct xorg_renderer *r,
 126                  float x, float y,
 127                  float color[4])
 128 {
 129    float *vertex = r->buffer + r->buffer_size;
 130
 131    vertex[0] = x;
 132    vertex[1] = y;
 133    vertex[2] = 0.f; /*z*/
 134    vertex[3] = 1.f; /*w*/
 135
 136    vertex[4] = color[0]; /*r*/
 137    vertex[5] = color[1]; /*g*/
 138    vertex[6] = color[2]; /*b*/
 139    vertex[7] = color[3]; /*a*/
 140
 141    r->buffer_size += 8;
 142 }
 143
 144 static INLINE void
 145 add_vertex_1tex(struct xorg_renderer *r,
 146                 float x, float y, float s, float t)
 147 {
 148    float *vertex = r->buffer + r->buffer_size;
 149
 150    vertex[0] = x;
 151    vertex[1] = y;
 152    vertex[2] = 0.f; /*z*/
 153    vertex[3] = 1.f; /*w*/
 154
 155    vertex[4] = s;   /*s*/
 156    vertex[5] = t;   /*t*/
 157    vertex[6] = 0.f; /*r*/
 158    vertex[7] = 1.f; /*q*/
 159
 160    r->buffer_size += 8;
 161 }
 162
 163 static void
 164 add_vertex_data1(struct xorg_renderer *r,
 165                  float srcX, float srcY,  float dstX, float dstY,
 166                  float width, float height,
 167                  struct pipe_resource *src, float *src_matrix)
 168 {
 169    float s0, t0, s1, t1, s2, t2, s3, t3;
 170    float pt0[2], pt1[2], pt2[2], pt3[2];
 171
 172    pt0[0] = srcX;
 173    pt0[1] = srcY;
 174    pt1[0] = (srcX + width);
 175    pt1[1] = srcY;
 176    pt2[0] = (srcX + width);
 177    pt2[1] = (srcY + height);
 178    pt3[0] = srcX;
 179    pt3[1] = (srcY + height);
 180
 181    if (src_matrix) {
 182       map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
 183       map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
 184       map_point(src_matrix, pt2[0], pt2[1], &pt2[0], &pt2[1]);
 185       map_point(src_matrix, pt3[0], pt3[1], &pt3[0], &pt3[1]);
 186    }
 187
 188    s0 =  pt0[0] / src->width0;
 189    s1 =  pt1[0] / src->width0;
 190    s2 =  pt2[0] / src->width0;
 191    s3 =  pt3[0] / src->width0;
 192    t0 =  pt0[1] / src->height0;
 193    t1 =  pt1[1] / src->height0;
 194    t2 =  pt2[1] / src->height0;
 195    t3 =  pt3[1] / src->height0;
 196
 197    /* 1st vertex */
 198    add_vertex_1tex(r, dstX, dstY, s0, t0);
 199    /* 2nd vertex */
 200    add_vertex_1tex(r, dstX + width, dstY, s1, t1);
 201    /* 3rd vertex */
 202    add_vertex_1tex(r, dstX + width, dstY + height, s2, t2);
 203    /* 4th vertex */
 204    add_vertex_1tex(r, dstX, dstY + height, s3, t3);
 205 }
 206
 207
 208 static INLINE void
 209 add_vertex_2tex(struct xorg_renderer *r,
 210                 float x, float y,
 211                 float s0, float t0, float s1, float t1)
 212 {
 213    float *vertex = r->buffer + r->buffer_size;
 214
 215    vertex[0] = x;
 216    vertex[1] = y;
 217    vertex[2] = 0.f; /*z*/
 218    vertex[3] = 1.f; /*w*/
 219
 220    vertex[4] = s0;  /*s*/
 221    vertex[5] = t0;  /*t*/
 222    vertex[6] = 0.f; /*r*/
 223    vertex[7] = 1.f; /*q*/
 224
 225    vertex[8] = s1;  /*s*/
 226    vertex[9] = t1;  /*t*/
 227    vertex[10] = 0.f; /*r*/
 228    vertex[11] = 1.f; /*q*/
 229
 230    r->buffer_size += 12;
 231 }
 232
 233 static void
 234 add_vertex_data2(struct xorg_renderer *r,
 235                  float srcX, float srcY, float maskX, float maskY,
 236                  float dstX, float dstY, float width, float height,
 237                  struct pipe_resource *src,
 238                  struct pipe_resource *mask,
 239                  float *src_matrix, float *mask_matrix)
 240 {
 241    float src_s0, src_t0, src_s1, src_t1;
 242    float mask_s0, mask_t0, mask_s1, mask_t1;
 243    float spt0[2], spt1[2];
 244    float mpt0[2], mpt1[2];
 245
 246    spt0[0] = srcX;
 247    spt0[1] = srcY;
 248    spt1[0] = srcX + width;
 249    spt1[1] = srcY + height;
 250
 251    mpt0[0] = maskX;
 252    mpt0[1] = maskY;
 253    mpt1[0] = maskX + width;
 254    mpt1[1] = maskY + height;
 255
 256    if (src_matrix) {
 257       map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
 258       map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
 259    }
 260
 261    if (mask_matrix) {
 262       map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
 263       map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
 264    }
 265
 266    src_s0 = spt0[0] / src->width0;
 267    src_t0 = spt0[1] / src->height0;
 268    src_s1 = spt1[0] / src->width0;
 269    src_t1 = spt1[1] / src->height0;
 270
 271    mask_s0 = mpt0[0] / mask->width0;
 272    mask_t0 = mpt0[1] / mask->height0;
 273    mask_s1 = mpt1[0] / mask->width0;
 274    mask_t1 = mpt1[1] / mask->height0;
 275
 276    /* 1st vertex */
 277    add_vertex_2tex(r, dstX, dstY,
 278                    src_s0, src_t0, mask_s0, mask_t0);
 279    /* 2nd vertex */
 280    add_vertex_2tex(r, dstX + width, dstY,
 281                    src_s1, src_t0, mask_s1, mask_t0);
 282    /* 3rd vertex */
 283    add_vertex_2tex(r, dstX + width, dstY + height,
 284                    src_s1, src_t1, mask_s1, mask_t1);
 285    /* 4th vertex */
 286    add_vertex_2tex(r, dstX, dstY + height,
 287                    src_s0, src_t1, mask_s0, mask_t1);
 288 }
 289
 290 static struct pipe_resource *
 291 setup_vertex_data_yuv(struct xorg_renderer *r,
 292                       float srcX, float srcY, float srcW, float srcH,
 293                       float dstX, float dstY, float dstW, float dstH,
 294                       struct pipe_resource **tex)
 295 {
 296    float s0, t0, s1, t1;
 297    float spt0[2], spt1[2];
 298
 299    spt0[0] = srcX;
 300    spt0[1] = srcY;
 301    spt1[0] = srcX + srcW;
 302    spt1[1] = srcY + srcH;
 303
 304    s0 = spt0[0] / tex[0]->width0;
 305    t0 = spt0[1] / tex[0]->height0;
 306    s1 = spt1[0] / tex[0]->width0;
 307    t1 = spt1[1] / tex[0]->height0;
 308
 309    /* 1st vertex */
 310    add_vertex_1tex(r, dstX, dstY, s0, t0);
 311    /* 2nd vertex */
 312    add_vertex_1tex(r, dstX + dstW, dstY,
 313                    s1, t0);
 314    /* 3rd vertex */
 315    add_vertex_1tex(r, dstX + dstW, dstY + dstH,
 316                    s1, t1);
 317    /* 4th vertex */
 318    add_vertex_1tex(r, dstX, dstY + dstH,
 319                    s0, t1);
 320
 321    return renderer_buffer_create(r);
 322 }
 323
 324
 325
 326 /* Set up framebuffer, viewport and vertex shader constant buffer
 327  * state for a particular destinaton surface.  In all our rendering,
 328  * these concepts are linked.
 329  */
 330 void renderer_bind_destination(struct xorg_renderer *r,
 331                                struct pipe_surface *surface,
 332                                int width,
 333                                int height )
 334 {
 335
 336    struct pipe_framebuffer_state fb;
 337    struct pipe_viewport_state viewport;
 338
 339    /* Framebuffer uses actual surface width/height
 340     */
 341    memset(&fb, 0, sizeof fb);
 342    fb.width  = surface->width;
 343    fb.height = surface->height;
 344    fb.nr_cbufs = 1;
 345    fb.cbufs[0] = surface;
 346    fb.zsbuf = 0;
 347
 348    /* Viewport just touches the bit we're interested in:
 349     */
 350    viewport.scale[0] =  width / 2.f;
 351    viewport.scale[1] =  height / 2.f;
 352    viewport.scale[2] =  1.0;
 353    viewport.scale[3] =  1.0;
 354    viewport.translate[0] = width / 2.f;
 355    viewport.translate[1] = height / 2.f;
 356    viewport.translate[2] = 0.0;
 357    viewport.translate[3] = 0.0;
 358
 359    /* Constant buffer set up to match viewport dimensions:
 360     */
 361    if (r->fb_width != width ||
 362        r->fb_height != height)
 363    {
 364       float vs_consts[8] = {
 365          2.f/width, 2.f/height, 1, 1,
 366          -1, -1, 0, 0
 367       };
 368
 369       r->fb_width = width;
 370       r->fb_height = height;
 371
 372       renderer_set_constants(r, PIPE_SHADER_VERTEX,
 373                              vs_consts, sizeof vs_consts);
 374    }
 375
 376    cso_set_framebuffer(r->cso, &fb);
 377    cso_set_viewport(r->cso, &viewport);
 378 }
 379
 380
 381 struct xorg_renderer * renderer_create(struct pipe_context *pipe)
 382 {
 383    struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
 384
 385    renderer->pipe = pipe;
 386    renderer->cso = cso_create_context(pipe);
 387    renderer->shaders = xorg_shaders_create(renderer);
 388
 389    renderer_init_state(renderer);
 390
 391    return renderer;
 392 }
 393
 394 void renderer_destroy(struct xorg_renderer *r)
 395 {
 396    struct pipe_resource **vsbuf = &r->vs_const_buffer;
 397    struct pipe_resource **fsbuf = &r->fs_const_buffer;
 398
 399    if (*vsbuf)
 400       pipe_resource_reference(vsbuf, NULL);
 401
 402    if (*fsbuf)
 403       pipe_resource_reference(fsbuf, NULL);
 404
 405    if (r->shaders) {
 406       xorg_shaders_destroy(r->shaders);
 407       r->shaders = NULL;
 408    }
 409
 410    if (r->cso) {
 411       cso_release_all(r->cso);
 412       cso_destroy_context(r->cso);
 413       r->cso = NULL;
 414    }
 415 }
 416
 417
 418
 419
 420
 421 void renderer_set_constants(struct xorg_renderer *r,
 422                             int shader_type,
 423                             const float *params,
 424                             int param_bytes)
 425 {
 426    struct pipe_resource **cbuf =
 427       (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
 428       &r->fs_const_buffer;
 429
 430    pipe_resource_reference(cbuf, NULL);
 431    *cbuf = pipe_buffer_create(r->pipe->screen,
 432                               PIPE_BIND_CONSTANT_BUFFER,
 433                               param_bytes);
 434
 435    if (*cbuf) {
 436       pipe_buffer_write(r->pipe, *cbuf,
 437                         0, param_bytes, params);
 438    }
 439    r->pipe->set_constant_buffer(r->pipe, shader_type, 0, *cbuf);
 440 }
 441
 442
 443 void renderer_copy_prepare(struct xorg_renderer *r,
 444                            struct pipe_surface *dst_surface,
 445                            struct pipe_resource *src_texture)
 446 {
 447    struct pipe_context *pipe = r->pipe;
 448    struct pipe_screen *screen = pipe->screen;
 449    struct xorg_shader shader;
 450
 451    assert(screen->is_format_supported(screen, dst_surface->format,
 452                                       PIPE_TEXTURE_2D, 0,
 453                                       PIPE_BIND_RENDER_TARGET,
 454                                       0));
 455    (void) screen;
 456
 457
 458    /* set misc state we care about */
 459    {
 460       struct pipe_blend_state blend;
 461       memset(&blend, 0, sizeof(blend));
 462       blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 463       blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 464       blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 465       blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 466       blend.rt[0].colormask = PIPE_MASK_RGBA;
 467       cso_set_blend(r->cso, &blend);
 468    }
 469
 470    /* sampler */
 471    {
 472       struct pipe_sampler_state sampler;
 473       memset(&sampler, 0, sizeof(sampler));
 474       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 475       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 476       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 477       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 478       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 479       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 480       sampler.normalized_coords = 1;
 481       cso_single_sampler(r->cso, 0, &sampler);
 482       cso_single_sampler_done(r->cso);
 483    }
 484
 485    renderer_bind_destination(r, dst_surface,
 486                              dst_surface->width,
 487                              dst_surface->height);
 488
 489    /* texture/sampler view */
 490    {
 491       struct pipe_sampler_view templ;
 492       struct pipe_sampler_view *src_view;
 493       u_sampler_view_default_template(&templ,
 494                                       src_texture,
 495                                       src_texture->format);
 496       src_view = pipe->create_sampler_view(pipe, src_texture, &templ);
 497       cso_set_fragment_sampler_views(r->cso, 1, &src_view);
 498       pipe_sampler_view_reference(&src_view, NULL);
 499    }
 500
 501    /* shaders */
 502    shader = xorg_shaders_get(r->shaders,
 503                              VS_COMPOSITE,
 504                              FS_COMPOSITE);
 505    cso_set_vertex_shader_handle(r->cso, shader.vs);
 506    cso_set_fragment_shader_handle(r->cso, shader.fs);
 507
 508    r->buffer_size = 0;
 509    r->attrs_per_vertex = 2;
 510 }
 511
 512 struct pipe_resource *
 513 renderer_clone_texture(struct xorg_renderer *r,
 514                        struct pipe_resource *src)
 515 {
 516    enum pipe_format format;
 517    struct pipe_context *pipe = r->pipe;
 518    struct pipe_screen *screen = pipe->screen;
 519    struct pipe_resource *pt;
 520    struct pipe_resource templ;
 521
 522    if (pipe->is_resource_referenced(pipe, src, 0, 0) &
 523        PIPE_REFERENCED_FOR_WRITE)
 524       pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 525
 526    /* the coming in texture should already have that invariance */
 527    debug_assert(screen->is_format_supported(screen, src->format,
 528                                             PIPE_TEXTURE_2D, 0,
 529                                             PIPE_BIND_SAMPLER_VIEW, 0));
 530
 531    format = src->format;
 532
 533    memset(&templ, 0, sizeof(templ));
 534    templ.target = PIPE_TEXTURE_2D;
 535    templ.format = format;
 536    templ.last_level = 0;
 537    templ.width0 = src->width0;
 538    templ.height0 = src->height0;
 539    templ.depth0 = 1;
 540    templ.bind = PIPE_BIND_SAMPLER_VIEW;
 541
 542    pt = screen->resource_create(screen, &templ);
 543
 544    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 545
 546    if (!pt)
 547       return NULL;
 548
 549    {
 550       /* copy source framebuffer surface into texture */
 551       struct pipe_subresource subsrc, subdst;
 552       subsrc.face = 0;
 553       subsrc.level = 0;
 554       subdst.face = 0;
 555       subdst.level = 0;
 556       pipe->resource_copy_region(pipe,
 557                                  pt, /* dest */
 558                                  subdst,
 559                                  0, 0, 0, /* destx/y/z */
 560                                  src,
 561                                  subsrc,
 562                                  0, 0, 0,
 563                                  src->width0, src->height0);
 564    }
 565
 566    return pt;
 567 }
 568
 569
 570 void renderer_copy_pixmap(struct xorg_renderer *r,
 571                           int dx, int dy,
 572                           int sx, int sy,
 573                           int width, int height,
 574                           float src_width,
 575                           float src_height)
 576 {
 577    float s0, t0, s1, t1;
 578    float x0, y0, x1, y1;
 579
 580
 581    /* XXX: could put the texcoord scaling calculation into the vertex
 582     * shader.
 583     */
 584    s0 = sx            / src_width;
 585    s1 = (sx + width)  / src_width;
 586    t0 = sy            / src_height;
 587    t1 = (sy + height) / src_height;
 588
 589    x0 = dx;
 590    x1 = dx + width;
 591    y0 = dy;
 592    y1 = dy + height;
 593
 594    /* draw quad */
 595    renderer_draw_conditional(r, 4*8);
 596    add_vertex_1tex(r, x0, y0, s0, t0);
 597    add_vertex_1tex(r, x1, y0, s1, t0);
 598    add_vertex_1tex(r, x1, y1, s1, t1);
 599    add_vertex_1tex(r, x0, y1, s0, t1);
 600 }
 601
 602
 603
 604
 605 void renderer_draw_yuv(struct xorg_renderer *r,
 606                        int src_x, int src_y, int src_w, int src_h,
 607                        int dst_x, int dst_y, int dst_w, int dst_h,
 608                        struct pipe_resource **textures)
 609 {
 610    struct pipe_context *pipe = r->pipe;
 611    struct pipe_resource *buf = 0;
 612
 613    buf = setup_vertex_data_yuv(r,
 614                                src_x, src_y, src_w, src_h,
 615                                dst_x, dst_y, dst_w, dst_h,
 616                                textures);
 617
 618    if (buf) {
 619       const int num_attribs = 2; /*pos + tex coord*/
 620
 621       cso_set_vertex_elements(r->cso, num_attribs, r->velems);
 622
 623       util_draw_vertex_buffer(pipe, buf, 0,
 624                               PIPE_PRIM_QUADS,
 625                               4,  /* verts */
 626                               num_attribs); /* attribs/vert */
 627
 628       pipe_resource_reference(&buf, NULL);
 629    }
 630 }
 631
 632 void renderer_begin_solid(struct xorg_renderer *r)
 633 {
 634    r->buffer_size = 0;
 635    r->attrs_per_vertex = 2;
 636 }
 637
 638 void renderer_solid(struct xorg_renderer *r,
 639                     int x0, int y0,
 640                     int x1, int y1,
 641                     float *color)
 642 {
 643    /*
 644    debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
 645    x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
 646
 647    renderer_draw_conditional(r, 4 * 8);
 648
 649    /* 1st vertex */
 650    add_vertex_color(r, x0, y0, color);
 651    /* 2nd vertex */
 652    add_vertex_color(r, x1, y0, color);
 653    /* 3rd vertex */
 654    add_vertex_color(r, x1, y1, color);
 655    /* 4th vertex */
 656    add_vertex_color(r, x0, y1, color);
 657 }
 658
 659 void renderer_draw_flush(struct xorg_renderer *r)
 660 {
 661    renderer_draw_conditional(r, 0);
 662 }
 663
 664 void renderer_begin_textures(struct xorg_renderer *r,
 665                              int num_textures)
 666 {
 667    r->attrs_per_vertex = 1 + num_textures;
 668    r->buffer_size = 0;
 669 }
 670
 671 void renderer_texture(struct xorg_renderer *r,
 672                       int *pos,
 673                       int width, int height,
 674                       struct pipe_sampler_view **sampler_view,
 675                       int num_textures,
 676                       float *src_matrix,
 677                       float *mask_matrix)
 678 {
 679
 680 #if 0
 681    if (src_matrix) {
 682       debug_printf("src_matrix = \n");
 683       debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
 684       debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
 685       debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
 686    }
 687    if (mask_matrix) {
 688       debug_printf("mask_matrix = \n");
 689       debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
 690       debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
 691       debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
 692    }
 693 #endif
 694
 695    switch(r->attrs_per_vertex) {
 696    case 2:
 697       renderer_draw_conditional(r, 4 * 8);
 698       add_vertex_data1(r,
 699                        pos[0], pos[1], /* src */
 700                        pos[4], pos[5], /* dst */
 701                        width, height,
 702                        sampler_view[0]->texture, src_matrix);
 703       break;
 704    case 3:
 705       renderer_draw_conditional(r, 4 * 12);
 706       add_vertex_data2(r,
 707                        pos[0], pos[1], /* src */
 708                        pos[2], pos[3], /* mask */
 709                        pos[4], pos[5], /* dst */
 710                        width, height,
 711                        sampler_view[0]->texture, sampler_view[1]->texture,
 712                        src_matrix, mask_matrix);
 713       break;
 714    default:
 715       debug_assert(!"Unsupported number of textures");
 716       break;
 717    }
 718 }