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
  12 #include "pipe/p_inlines.h"
  13
  14 #include <math.h>
  15
  16 enum AxisOrientation {
  17    Y0_BOTTOM,
  18    Y0_TOP
  19 };
  20
  21 #define floatsEqual(x, y) (fabs(x - y) <= 0.00001f * MIN2(fabs(x), fabs(y)))
  22 #define floatIsZero(x) (floatsEqual((x) + 1, 1))
  23
  24 #define NUM_COMPONENTS 4
  25
  26 static INLINE boolean is_affine(float *matrix)
  27 {
  28    return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
  29       && floatsEqual(matrix[8], 1);
  30 }
  31 static INLINE void map_point(float *mat, float x, float y,
  32                              float *out_x, float *out_y)
  33 {
  34    if (!mat) {
  35       *out_x = x;
  36       *out_y = y;
  37       return;
  38    }
  39
  40    *out_x = mat[0]*x + mat[3]*y + mat[6];
  41    *out_y = mat[1]*x + mat[4]*y + mat[7];
  42    if (!is_affine(mat)) {
  43       float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
  44       *out_x *= w;
  45       *out_y *= w;
  46    }
  47 }
  48
  49 static INLINE struct pipe_buffer *
  50 renderer_buffer_create(struct xorg_renderer *r)
  51 {
  52    struct pipe_buffer *buf =
  53       pipe_user_buffer_create(r->pipe->screen,
  54                               r->vertices,
  55                               sizeof(float)*
  56                               r->num_vertices);
  57    r->num_vertices = 0;
  58
  59    return buf;
  60 }
  61
  62 static INLINE void
  63 renderer_draw(struct xorg_renderer *r)
  64 {
  65    struct pipe_context *pipe = r->pipe;
  66    struct pipe_buffer *buf = 0;
  67    int num_verts = r->num_vertices/(r->num_attributes * NUM_COMPONENTS);
  68
  69    if (!r->num_vertices)
  70       return;
  71
  72    buf = renderer_buffer_create(r);
  73
  74
  75    if (buf) {
  76       util_draw_vertex_buffer(pipe, buf, 0,
  77                               PIPE_PRIM_QUADS,
  78                               num_verts,  /* verts */
  79                               r->num_attributes); /* attribs/vert */
  80
  81       pipe_buffer_reference(&buf, NULL);
  82    }
  83 }
  84
  85 static INLINE void
  86 renderer_draw_conditional(struct xorg_renderer *r,
  87                           int next_batch)
  88 {
  89    if (r->num_vertices + next_batch >= BUF_SIZE ||
  90        (next_batch == 0 && r->num_vertices)) {
  91       renderer_draw(r);
  92    }
  93 }
  94
  95 static void
  96 renderer_init_state(struct xorg_renderer *r)
  97 {
  98    struct pipe_depth_stencil_alpha_state dsa;
  99
 100    /* set common initial clip state */
 101    memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
 102    cso_set_depth_stencil_alpha(r->cso, &dsa);
 103 }
 104
 105
 106 static INLINE void
 107 add_vertex_color(struct xorg_renderer *r,
 108                  float x, float y,
 109                  float color[4])
 110 {
 111    float *vertex = r->vertices + r->num_vertices;
 112
 113    vertex[0] = x;
 114    vertex[1] = y;
 115    vertex[2] = 0.f; /*z*/
 116    vertex[3] = 1.f; /*w*/
 117
 118    vertex[4] = color[0]; /*r*/
 119    vertex[5] = color[1]; /*g*/
 120    vertex[6] = color[2]; /*b*/
 121    vertex[7] = color[3]; /*a*/
 122
 123    r->num_vertices += 8;
 124 }
 125
 126 static INLINE void
 127 add_vertex_1tex(struct xorg_renderer *r,
 128                 float x, float y, float s, float t)
 129 {
 130    float *vertex = r->vertices + r->num_vertices;
 131
 132    vertex[0] = x;
 133    vertex[1] = y;
 134    vertex[2] = 0.f; /*z*/
 135    vertex[3] = 1.f; /*w*/
 136
 137    vertex[4] = s;   /*s*/
 138    vertex[5] = t;   /*t*/
 139    vertex[6] = 0.f; /*r*/
 140    vertex[7] = 1.f; /*q*/
 141
 142    r->num_vertices += 8;
 143 }
 144
 145 static void
 146 add_vertex_data1(struct xorg_renderer *r,
 147                  float srcX, float srcY,  float dstX, float dstY,
 148                  float width, float height,
 149                  struct pipe_texture *src, float *src_matrix)
 150 {
 151    float s0, t0, s1, t1;
 152    float pt0[2], pt1[2];
 153
 154    pt0[0] = srcX;
 155    pt0[1] = srcY;
 156    pt1[0] = (srcX + width);
 157    pt1[1] = (srcY + height);
 158
 159    if (src_matrix) {
 160       map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
 161       map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
 162    }
 163
 164    s0 =  pt0[0] / src->width[0];
 165    s1 =  pt1[0] / src->width[0];
 166    t0 =  pt0[1] / src->height[0];
 167    t1 =  pt1[1] / src->height[0];
 168
 169    /* 1st vertex */
 170    add_vertex_1tex(r, dstX, dstY, s0, t0);
 171    /* 2nd vertex */
 172    add_vertex_1tex(r, dstX + width, dstY, s1, t0);
 173    /* 3rd vertex */
 174    add_vertex_1tex(r, dstX + width, dstY + height, s1, t1);
 175    /* 4th vertex */
 176    add_vertex_1tex(r, dstX, dstY + height, s0, t1);
 177 }
 178
 179 static struct pipe_buffer *
 180 setup_vertex_data_tex(struct xorg_renderer *r,
 181                       float x0, float y0, float x1, float y1,
 182                       float s0, float t0, float s1, float t1,
 183                       float z)
 184 {
 185    /* 1st vertex */
 186    add_vertex_1tex(r, x0, y0, s0, t0);
 187    /* 2nd vertex */
 188    add_vertex_1tex(r, x1, y0, s1, t0);
 189    /* 3rd vertex */
 190    add_vertex_1tex(r, x1, y1, s1, t1);
 191    /* 4th vertex */
 192    add_vertex_1tex(r, x0, y1, s0, t1);
 193
 194    return renderer_buffer_create(r);
 195 }
 196
 197 static INLINE void
 198 add_vertex_2tex(struct xorg_renderer *r,
 199                 float x, float y,
 200                 float s0, float t0, float s1, float t1)
 201 {
 202    float *vertex = r->vertices + r->num_vertices;
 203
 204    vertex[0] = x;
 205    vertex[1] = y;
 206    vertex[2] = 0.f; /*z*/
 207    vertex[3] = 1.f; /*w*/
 208
 209    vertex[4] = s0;  /*s*/
 210    vertex[5] = t0;  /*t*/
 211    vertex[6] = 0.f; /*r*/
 212    vertex[7] = 1.f; /*q*/
 213
 214    vertex[8] = s1;  /*s*/
 215    vertex[9] = t1;  /*t*/
 216    vertex[10] = 0.f; /*r*/
 217    vertex[11] = 1.f; /*q*/
 218
 219    r->num_vertices += 12;
 220 }
 221
 222 static void
 223 add_vertex_data2(struct xorg_renderer *r,
 224                  float srcX, float srcY, float maskX, float maskY,
 225                  float dstX, float dstY, float width, float height,
 226                  struct pipe_texture *src,
 227                  struct pipe_texture *mask,
 228                  float *src_matrix, float *mask_matrix)
 229 {
 230    float src_s0, src_t0, src_s1, src_t1;
 231    float mask_s0, mask_t0, mask_s1, mask_t1;
 232    float spt0[2], spt1[2];
 233    float mpt0[2], mpt1[2];
 234
 235    spt0[0] = srcX;
 236    spt0[1] = srcY;
 237    spt1[0] = srcX + width;
 238    spt1[1] = srcY + height;
 239
 240    mpt0[0] = maskX;
 241    mpt0[1] = maskY;
 242    mpt1[0] = maskX + width;
 243    mpt1[1] = maskY + height;
 244
 245    if (src_matrix) {
 246       map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
 247       map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
 248    }
 249
 250    if (mask_matrix) {
 251       map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
 252       map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
 253    }
 254
 255    src_s0 = spt0[0] / src->width[0];
 256    src_t0 = spt0[1] / src->height[0];
 257    src_s1 = spt1[0] / src->width[0];
 258    src_t1 = spt1[1] / src->height[0];
 259
 260    mask_s0 = mpt0[0] / mask->width[0];
 261    mask_t0 = mpt0[1] / mask->height[0];
 262    mask_s1 = mpt1[0] / mask->width[0];
 263    mask_t1 = mpt1[1] / mask->height[0];
 264
 265    /* 1st vertex */
 266    add_vertex_2tex(r, dstX, dstY,
 267                    src_s0, src_t0, mask_s0, mask_t0);
 268    /* 2nd vertex */
 269    add_vertex_2tex(r, dstX + width, dstY,
 270                    src_s1, src_t0, mask_s1, mask_t0);
 271    /* 3rd vertex */
 272    add_vertex_2tex(r, dstX + width, dstY + height,
 273                    src_s1, src_t1, mask_s1, mask_t1);
 274    /* 4th vertex */
 275    add_vertex_2tex(r, dstX, dstY + height,
 276                    src_s0, src_t1, mask_s0, mask_t1);
 277 }
 278
 279 static struct pipe_buffer *
 280 setup_vertex_data_yuv(struct xorg_renderer *r,
 281                       float srcX, float srcY, float srcW, float srcH,
 282                       float dstX, float dstY, float dstW, float dstH,
 283                       struct pipe_texture **tex)
 284 {
 285    float s0, t0, s1, t1;
 286    float spt0[2], spt1[2];
 287
 288    spt0[0] = srcX;
 289    spt0[1] = srcY;
 290    spt1[0] = srcX + srcW;
 291    spt1[1] = srcY + srcH;
 292
 293    s0 = spt0[0] / tex[0]->width[0];
 294    t0 = spt0[1] / tex[0]->height[0];
 295    s1 = spt1[0] / tex[0]->width[0];
 296    t1 = spt1[1] / tex[0]->height[0];
 297
 298    /* 1st vertex */
 299    add_vertex_1tex(r, dstX, dstY, s0, t0);
 300    /* 2nd vertex */
 301    add_vertex_1tex(r, dstX + dstW, dstY,
 302                    s1, t0);
 303    /* 3rd vertex */
 304    add_vertex_1tex(r, dstX + dstW, dstY + dstH,
 305                    s1, t1);
 306    /* 4th vertex */
 307    add_vertex_1tex(r, dstX, dstY + dstH,
 308                    s0, t1);
 309
 310    return renderer_buffer_create(r);
 311 }
 312
 313
 314
 315 static void
 316 set_viewport(struct xorg_renderer *r, int width, int height,
 317              enum AxisOrientation orientation)
 318 {
 319    struct pipe_viewport_state viewport;
 320    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 321
 322    viewport.scale[0] =  width / 2.f;
 323    viewport.scale[1] =  height / y_scale;
 324    viewport.scale[2] =  1.0;
 325    viewport.scale[3] =  1.0;
 326    viewport.translate[0] = width / 2.f;
 327    viewport.translate[1] = height / 2.f;
 328    viewport.translate[2] = 0.0;
 329    viewport.translate[3] = 0.0;
 330
 331    cso_set_viewport(r->cso, &viewport);
 332 }
 333
 334
 335
 336 struct xorg_renderer * renderer_create(struct pipe_context *pipe)
 337 {
 338    struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
 339
 340    renderer->pipe = pipe;
 341    renderer->cso = cso_create_context(pipe);
 342    renderer->shaders = xorg_shaders_create(renderer);
 343
 344    renderer_init_state(renderer);
 345
 346    return renderer;
 347 }
 348
 349 void renderer_destroy(struct xorg_renderer *r)
 350 {
 351    struct pipe_constant_buffer *vsbuf = &r->vs_const_buffer;
 352    struct pipe_constant_buffer *fsbuf = &r->fs_const_buffer;
 353
 354    if (vsbuf && vsbuf->buffer)
 355       pipe_buffer_reference(&vsbuf->buffer, NULL);
 356
 357    if (fsbuf && fsbuf->buffer)
 358       pipe_buffer_reference(&fsbuf->buffer, NULL);
 359
 360    if (r->shaders) {
 361       xorg_shaders_destroy(r->shaders);
 362       r->shaders = NULL;
 363    }
 364
 365    if (r->cso) {
 366       cso_release_all(r->cso);
 367       cso_destroy_context(r->cso);
 368       r->cso = NULL;
 369    }
 370 }
 371
 372 void renderer_bind_framebuffer(struct xorg_renderer *r,
 373                                struct exa_pixmap_priv *priv)
 374 {
 375    unsigned i;
 376    struct pipe_framebuffer_state state;
 377    struct pipe_surface *surface = xorg_gpu_surface(r->pipe->screen, priv);
 378    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 379
 380    state.width  = priv->tex->width[0];
 381    state.height = priv->tex->height[0];
 382
 383    state.nr_cbufs = 1;
 384    state.cbufs[0] = surface;
 385    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 386       state.cbufs[i] = 0;
 387
 388    /* currently we don't use depth/stencil */
 389    state.zsbuf = 0;
 390
 391    cso_set_framebuffer(r->cso, &state);
 392
 393    /* we do fire and forget for the framebuffer, this is the forget part */
 394    pipe_surface_reference(&surface, NULL);
 395 }
 396
 397 void renderer_bind_viewport(struct xorg_renderer *r,
 398                             struct exa_pixmap_priv *dst)
 399 {
 400    int width = dst->tex->width[0];
 401    int height = dst->tex->height[0];
 402
 403    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 404
 405    set_viewport(r, width, height, Y0_TOP);
 406 }
 407
 408 void renderer_bind_rasterizer(struct xorg_renderer *r)
 409 {
 410    struct pipe_rasterizer_state raster;
 411
 412    /* XXX: move to renderer_init_state? */
 413    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 414    raster.gl_rasterization_rules = 1;
 415    cso_set_rasterizer(r->cso, &raster);
 416 }
 417
 418 void renderer_set_constants(struct xorg_renderer *r,
 419                             int shader_type,
 420                             const float *params,
 421                             int param_bytes)
 422 {
 423    struct pipe_constant_buffer *cbuf =
 424       (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
 425       &r->fs_const_buffer;
 426
 427    pipe_buffer_reference(&cbuf->buffer, NULL);
 428    cbuf->buffer = pipe_buffer_create(r->pipe->screen, 16,
 429                                      PIPE_BUFFER_USAGE_CONSTANT,
 430                                      param_bytes);
 431
 432    if (cbuf->buffer) {
 433       pipe_buffer_write(r->pipe->screen, cbuf->buffer,
 434                         0, param_bytes, params);
 435    }
 436    r->pipe->set_constant_buffer(r->pipe, shader_type, 0, cbuf);
 437 }
 438
 439 static void
 440 setup_vs_constant_buffer(struct xorg_renderer *r,
 441                          int width, int height)
 442 {
 443    const int param_bytes = 8 * sizeof(float);
 444    float vs_consts[8] = {
 445       2.f/width, 2.f/height, 1, 1,
 446       -1, -1, 0, 0
 447    };
 448    renderer_set_constants(r, PIPE_SHADER_VERTEX,
 449                           vs_consts, param_bytes);
 450 }
 451
 452 static void
 453 setup_fs_constant_buffer(struct xorg_renderer *r)
 454 {
 455    const int param_bytes = 4 * sizeof(float);
 456    const float fs_consts[8] = {
 457       0, 0, 0, 1,
 458    };
 459    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 460                           fs_consts, param_bytes);
 461 }
 462
 463 static INLINE void shift_rectx(float coords[4],
 464                                const float *bounds,
 465                                const float shift)
 466 {
 467    coords[0] += shift;
 468    coords[2] -= shift;
 469    if (bounds) {
 470       coords[2] = MIN2(coords[2], bounds[2]);
 471       /* bound x/y + width/height */
 472       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 473          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 474       }
 475    }
 476 }
 477
 478 static INLINE void shift_recty(float coords[4],
 479                                const float *bounds,
 480                                const float shift)
 481 {
 482    coords[1] += shift;
 483    coords[3] -= shift;
 484    if (bounds) {
 485       coords[3] = MIN2(coords[3], bounds[3]);
 486       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 487          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 488       }
 489    }
 490 }
 491
 492 static INLINE void bound_rect(float coords[4],
 493                               const float bounds[4],
 494                               float shift[4])
 495 {
 496    /* if outside the bounds */
 497    if (coords[0] > (bounds[0] + bounds[2]) ||
 498        coords[1] > (bounds[1] + bounds[3]) ||
 499        (coords[0] + coords[2]) < bounds[0] ||
 500        (coords[1] + coords[3]) < bounds[1]) {
 501       coords[0] = 0.f;
 502       coords[1] = 0.f;
 503       coords[2] = 0.f;
 504       coords[3] = 0.f;
 505       shift[0] = 0.f;
 506       shift[1] = 0.f;
 507       return;
 508    }
 509
 510    /* bound x */
 511    if (coords[0] < bounds[0]) {
 512       shift[0] = bounds[0] - coords[0];
 513       coords[2] -= shift[0];
 514       coords[0] = bounds[0];
 515    } else
 516       shift[0] = 0.f;
 517
 518    /* bound y */
 519    if (coords[1] < bounds[1]) {
 520       shift[1] = bounds[1] - coords[1];
 521       coords[3] -= shift[1];
 522       coords[1] = bounds[1];
 523    } else
 524       shift[1] = 0.f;
 525
 526    shift[2] = bounds[2] - coords[2];
 527    shift[3] = bounds[3] - coords[3];
 528    /* bound width/height */
 529    coords[2] = MIN2(coords[2], bounds[2]);
 530    coords[3] = MIN2(coords[3], bounds[3]);
 531
 532    /* bound x/y + width/height */
 533    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 534       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 535    }
 536    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 537       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 538    }
 539
 540    /* if outside the bounds */
 541    if ((coords[0] + coords[2]) < bounds[0] ||
 542        (coords[1] + coords[3]) < bounds[1]) {
 543       coords[0] = 0.f;
 544       coords[1] = 0.f;
 545       coords[2] = 0.f;
 546       coords[3] = 0.f;
 547       return;
 548    }
 549 }
 550
 551 static INLINE void sync_size(float *src_loc, float *dst_loc)
 552 {
 553    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 554    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 555    dst_loc[2] = src_loc[2];
 556    dst_loc[3] = src_loc[3];
 557 }
 558
 559 static void renderer_copy_texture(struct xorg_renderer *r,
 560                                   struct pipe_texture *src,
 561                                   float sx1, float sy1,
 562                                   float sx2, float sy2,
 563                                   struct pipe_texture *dst,
 564                                   float dx1, float dy1,
 565                                   float dx2, float dy2)
 566 {
 567    struct pipe_context *pipe = r->pipe;
 568    struct pipe_screen *screen = pipe->screen;
 569    struct pipe_buffer *buf;
 570    struct pipe_surface *dst_surf = screen->get_tex_surface(
 571       screen, dst, 0, 0, 0,
 572       PIPE_BUFFER_USAGE_GPU_WRITE);
 573    struct pipe_framebuffer_state fb;
 574    float s0, t0, s1, t1;
 575    struct xorg_shader shader;
 576
 577    assert(src->width[0] != 0);
 578    assert(src->height[0] != 0);
 579    assert(dst->width[0] != 0);
 580    assert(dst->height[0] != 0);
 581
 582 #if 1
 583    s0 = sx1 / src->width[0];
 584    s1 = sx2 / src->width[0];
 585    t0 = sy1 / src->height[0];
 586    t1 = sy2 / src->height[0];
 587 #else
 588    s0 = 0;
 589    s1 = 1;
 590    t0 = 0;
 591    t1 = 1;
 592 #endif
 593
 594 #if 0
 595    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 596                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 597                 s0, t0, s1, t1);
 598 #endif
 599
 600    assert(screen->is_format_supported(screen, dst_surf->format,
 601                                       PIPE_TEXTURE_2D,
 602                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 603                                       0));
 604
 605    /* save state (restored below) */
 606    cso_save_blend(r->cso);
 607    cso_save_samplers(r->cso);
 608    cso_save_sampler_textures(r->cso);
 609    cso_save_framebuffer(r->cso);
 610    cso_save_fragment_shader(r->cso);
 611    cso_save_vertex_shader(r->cso);
 612
 613    cso_save_viewport(r->cso);
 614
 615
 616    /* set misc state we care about */
 617    {
 618       struct pipe_blend_state blend;
 619       memset(&blend, 0, sizeof(blend));
 620       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 621       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 622       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 623       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 624       blend.colormask = PIPE_MASK_RGBA;
 625       cso_set_blend(r->cso, &blend);
 626    }
 627
 628    /* sampler */
 629    {
 630       struct pipe_sampler_state sampler;
 631       memset(&sampler, 0, sizeof(sampler));
 632       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 633       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 634       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 635       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 636       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 637       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 638       sampler.normalized_coords = 1;
 639       cso_single_sampler(r->cso, 0, &sampler);
 640       cso_single_sampler_done(r->cso);
 641    }
 642
 643    set_viewport(r, dst_surf->width, dst_surf->height, Y0_TOP);
 644
 645    /* texture */
 646    cso_set_sampler_textures(r->cso, 1, &src);
 647
 648    renderer_bind_rasterizer(r);
 649
 650    /* shaders */
 651    shader = xorg_shaders_get(r->shaders,
 652                              VS_COMPOSITE,
 653                              FS_COMPOSITE);
 654    cso_set_vertex_shader_handle(r->cso, shader.vs);
 655    cso_set_fragment_shader_handle(r->cso, shader.fs);
 656
 657    /* drawing dest */
 658    memset(&fb, 0, sizeof(fb));
 659    fb.width = dst_surf->width;
 660    fb.height = dst_surf->height;
 661    fb.nr_cbufs = 1;
 662    fb.cbufs[0] = dst_surf;
 663    {
 664       int i;
 665       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 666          fb.cbufs[i] = 0;
 667    }
 668    cso_set_framebuffer(r->cso, &fb);
 669    setup_vs_constant_buffer(r, fb.width, fb.height);
 670    setup_fs_constant_buffer(r);
 671
 672    /* draw quad */
 673    buf = setup_vertex_data_tex(r,
 674                                dx1, dy1,
 675                                dx2, dy2,
 676                                s0, t0, s1, t1,
 677                                0.0f);
 678
 679    if (buf) {
 680       util_draw_vertex_buffer(r->pipe, buf, 0,
 681                               PIPE_PRIM_QUADS,
 682                               4,  /* verts */
 683                               2); /* attribs/vert */
 684
 685       pipe_buffer_reference(&buf, NULL);
 686    }
 687
 688    /* restore state we changed */
 689    cso_restore_blend(r->cso);
 690    cso_restore_samplers(r->cso);
 691    cso_restore_sampler_textures(r->cso);
 692    cso_restore_framebuffer(r->cso);
 693    cso_restore_vertex_shader(r->cso);
 694    cso_restore_fragment_shader(r->cso);
 695    cso_restore_viewport(r->cso);
 696
 697    pipe_surface_reference(&dst_surf, NULL);
 698 }
 699
 700 static struct pipe_texture *
 701 create_sampler_texture(struct xorg_renderer *r,
 702                        struct pipe_texture *src)
 703 {
 704    enum pipe_format format;
 705    struct pipe_context *pipe = r->pipe;
 706    struct pipe_screen *screen = pipe->screen;
 707    struct pipe_texture *pt;
 708    struct pipe_texture templ;
 709
 710    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 711
 712    /* the coming in texture should already have that invariance */
 713    debug_assert(screen->is_format_supported(screen, src->format,
 714                                             PIPE_TEXTURE_2D,
 715                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 716
 717    format = src->format;
 718
 719    memset(&templ, 0, sizeof(templ));
 720    templ.target = PIPE_TEXTURE_2D;
 721    templ.format = format;
 722    templ.last_level = 0;
 723    templ.width[0] = src->width[0];
 724    templ.height[0] = src->height[0];
 725    templ.depth[0] = 1;
 726    pf_get_block(format, &templ.block);
 727    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 728
 729    pt = screen->texture_create(screen, &templ);
 730
 731    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 732
 733    if (!pt)
 734       return NULL;
 735
 736    {
 737       /* copy source framebuffer surface into texture */
 738       struct pipe_surface *ps_read = screen->get_tex_surface(
 739          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 740       struct pipe_surface *ps_tex = screen->get_tex_surface(
 741          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 742       if (pipe->surface_copy) {
 743          pipe->surface_copy(pipe,
 744                 ps_tex, /* dest */
 745                 0, 0, /* destx/y */
 746                 ps_read,
 747                 0, 0, src->width[0], src->height[0]);
 748       } else {
 749           util_surface_copy(pipe, FALSE,
 750                 ps_tex, /* dest */
 751                 0, 0, /* destx/y */
 752                 ps_read,
 753                 0, 0, src->width[0], src->height[0]);
 754       }
 755       pipe_surface_reference(&ps_read, NULL);
 756       pipe_surface_reference(&ps_tex, NULL);
 757    }
 758
 759    return pt;
 760 }
 761
 762
 763 void renderer_copy_pixmap(struct xorg_renderer *r,
 764                           struct exa_pixmap_priv *dst_priv, int dx, int dy,
 765                           struct exa_pixmap_priv *src_priv, int sx, int sy,
 766                           int width, int height)
 767 {
 768    float dst_loc[4], src_loc[4];
 769    float dst_bounds[4], src_bounds[4];
 770    float src_shift[4], dst_shift[4], shift[4];
 771    struct pipe_texture *dst = dst_priv->tex;
 772    struct pipe_texture *src = src_priv->tex;
 773
 774    if (r->pipe->is_texture_referenced(r->pipe, src, 0, 0) &
 775        PIPE_REFERENCED_FOR_WRITE)
 776       r->pipe->flush(r->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 777
 778    dst_loc[0] = dx;
 779    dst_loc[1] = dy;
 780    dst_loc[2] = width;
 781    dst_loc[3] = height;
 782    dst_bounds[0] = 0.f;
 783    dst_bounds[1] = 0.f;
 784    dst_bounds[2] = dst->width[0];
 785    dst_bounds[3] = dst->height[0];
 786
 787    src_loc[0] = sx;
 788    src_loc[1] = sy;
 789    src_loc[2] = width;
 790    src_loc[3] = height;
 791    src_bounds[0] = 0.f;
 792    src_bounds[1] = 0.f;
 793    src_bounds[2] = src->width[0];
 794    src_bounds[3] = src->height[0];
 795
 796    bound_rect(src_loc, src_bounds, src_shift);
 797    bound_rect(dst_loc, dst_bounds, dst_shift);
 798    shift[0] = src_shift[0] - dst_shift[0];
 799    shift[1] = src_shift[1] - dst_shift[1];
 800
 801    if (shift[0] < 0)
 802       shift_rectx(src_loc, src_bounds, -shift[0]);
 803    else
 804       shift_rectx(dst_loc, dst_bounds, shift[0]);
 805
 806    if (shift[1] < 0)
 807       shift_recty(src_loc, src_bounds, -shift[1]);
 808    else
 809       shift_recty(dst_loc, dst_bounds, shift[1]);
 810
 811    sync_size(src_loc, dst_loc);
 812
 813    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
 814        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
 815       struct pipe_texture *temp_src = src;
 816
 817       if (src == dst)
 818          temp_src = create_sampler_texture(r, src);
 819
 820       renderer_copy_texture(r,
 821                             temp_src,
 822                             src_loc[0],
 823                             src_loc[1],
 824                             src_loc[0] + src_loc[2],
 825                             src_loc[1] + src_loc[3],
 826                             dst,
 827                             dst_loc[0],
 828                             dst_loc[1],
 829                             dst_loc[0] + dst_loc[2],
 830                             dst_loc[1] + dst_loc[3]);
 831
 832       if (src == dst)
 833          pipe_texture_reference(&temp_src, NULL);
 834    }
 835 }
 836
 837 void renderer_draw_yuv(struct xorg_renderer *r,
 838                        int src_x, int src_y, int src_w, int src_h,
 839                        int dst_x, int dst_y, int dst_w, int dst_h,
 840                        struct pipe_texture **textures)
 841 {
 842    struct pipe_context *pipe = r->pipe;
 843    struct pipe_buffer *buf = 0;
 844
 845    buf = setup_vertex_data_yuv(r,
 846                                src_x, src_y, src_w, src_h,
 847                                dst_x, dst_y, dst_w, dst_h,
 848                                textures);
 849
 850    if (buf) {
 851       const int num_attribs = 2; /*pos + tex coord*/
 852
 853       util_draw_vertex_buffer(pipe, buf, 0,
 854                               PIPE_PRIM_QUADS,
 855                               4,  /* verts */
 856                               num_attribs); /* attribs/vert */
 857
 858       pipe_buffer_reference(&buf, NULL);
 859    }
 860 }
 861
 862 void renderer_begin_solid(struct xorg_renderer *r)
 863 {
 864    r->num_vertices = 0;
 865    r->num_attributes = 2;
 866 }
 867
 868 void renderer_solid(struct xorg_renderer *r,
 869                     int x0, int y0,
 870                     int x1, int y1,
 871                     float *color)
 872 {
 873    /*
 874    debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
 875    x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
 876
 877    renderer_draw_conditional(r, 4 * 8);
 878
 879    /* 1st vertex */
 880    add_vertex_color(r, x0, y0, color);
 881    /* 2nd vertex */
 882    add_vertex_color(r, x1, y0, color);
 883    /* 3rd vertex */
 884    add_vertex_color(r, x1, y1, color);
 885    /* 4th vertex */
 886    add_vertex_color(r, x0, y1, color);
 887 }
 888
 889 void renderer_draw_flush(struct xorg_renderer *r)
 890 {
 891    renderer_draw_conditional(r, 0);
 892 }
 893
 894 void renderer_begin_textures(struct xorg_renderer *r,
 895                              struct pipe_texture **textures,
 896                              int num_textures)
 897 {
 898    r->num_attributes = 1 + num_textures;
 899    r->num_vertices = 0;
 900 }
 901
 902 void renderer_texture(struct xorg_renderer *r,
 903                       int *pos,
 904                       int width, int height,
 905                       struct pipe_texture **textures,
 906                       int num_textures,
 907                       float *src_matrix,
 908                       float *mask_matrix)
 909 {
 910
 911 #if 0
 912    if (src_matrix) {
 913       debug_printf("src_matrix = \n");
 914       debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
 915       debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
 916       debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
 917    }
 918    if (mask_matrix) {
 919       debug_printf("mask_matrix = \n");
 920       debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
 921       debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
 922       debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
 923    }
 924 #endif
 925
 926    switch(r->num_attributes) {
 927    case 2:
 928       renderer_draw_conditional(r, 4 * 8);
 929       add_vertex_data1(r,
 930                        pos[0], pos[1], /* src */
 931                        pos[4], pos[5], /* dst */
 932                        width, height,
 933                        textures[0], src_matrix);
 934       break;
 935    case 3:
 936       renderer_draw_conditional(r, 4 * 12);
 937       add_vertex_data2(r,
 938                        pos[0], pos[1], /* src */
 939                        pos[2], pos[3], /* mask */
 940                        pos[4], pos[5], /* dst */
 941                        width, height,
 942                        textures[0], textures[1],
 943                        src_matrix, mask_matrix);
 944       break;
 945    default:
 946       debug_assert(!"Unsupported number of textures");
 947       break;
 948    }
 949 }