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 static INLINE boolean is_affine(float *matrix)
  25 {
  26    return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
  27       && floatsEqual(matrix[8], 1);
  28 }
  29 static INLINE void map_point(float *mat, float x, float y,
  30                              float *out_x, float *out_y)
  31 {
  32    if (!mat) {
  33       *out_x = x;
  34       *out_y = y;
  35       return;
  36    }
  37
  38    *out_x = mat[0]*x + mat[3]*y + mat[6];
  39    *out_y = mat[1]*x + mat[4]*y + mat[7];
  40    if (!is_affine(mat)) {
  41       float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
  42       *out_x *= w;
  43       *out_y *= w;
  44    }
  45 }
  46
  47 static INLINE struct pipe_buffer *
  48 renderer_buffer_create(struct xorg_renderer *r)
  49 {
  50    struct pipe_buffer *buf =
  51       pipe_user_buffer_create(r->pipe->screen,
  52                               r->vertices,
  53                               sizeof(float)*
  54                               r->num_vertices);
  55    r->num_vertices = 0;
  56
  57    return buf;
  58 }
  59
  60 static INLINE void
  61 renderer_draw(struct xorg_renderer *r)
  62 {
  63    struct pipe_context *pipe = r->pipe;
  64    struct pipe_buffer *buf = 0;
  65
  66    if (!r->num_vertices)
  67       return;
  68
  69    buf = renderer_buffer_create(r);
  70
  71
  72    if (buf) {
  73       util_draw_vertex_buffer(pipe, buf, 0,
  74                               PIPE_PRIM_QUADS,
  75                               4,  /* verts */
  76                               r->num_attributes); /* attribs/vert */
  77
  78       pipe_buffer_reference(&buf, NULL);
  79    }
  80 }
  81
  82 static INLINE void
  83 renderer_draw_conditional(struct xorg_renderer *r,
  84                           int next_batch)
  85 {
  86    if (r->num_vertices + next_batch >= BUF_SIZE ||
  87        (next_batch == 0 && r->num_vertices))
  88       renderer_draw(r);
  89 }
  90
  91 static void
  92 renderer_init_state(struct xorg_renderer *r)
  93 {
  94    struct pipe_depth_stencil_alpha_state dsa;
  95
  96    /* set common initial clip state */
  97    memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
  98    cso_set_depth_stencil_alpha(r->cso, &dsa);
  99 }
 100
 101
 102 static INLINE void
 103 add_vertex_color(struct xorg_renderer *r,
 104                  float x, float y,
 105                  float color[4])
 106 {
 107    float *vertex = r->vertices + r->num_vertices;
 108
 109    vertex[0] = x;
 110    vertex[1] = y;
 111    vertex[2] = 0.f; /*z*/
 112    vertex[3] = 1.f; /*w*/
 113
 114    vertex[4] = color[0]; /*r*/
 115    vertex[5] = color[1]; /*g*/
 116    vertex[6] = color[2]; /*b*/
 117    vertex[7] = color[3]; /*a*/
 118
 119    r->num_vertices += 8;
 120 }
 121
 122 static INLINE void
 123 add_vertex_1tex(struct xorg_renderer *r,
 124                 float x, float y, float s, float t)
 125 {
 126    float *vertex = r->vertices + r->num_vertices;
 127
 128    vertex[0] = x;
 129    vertex[1] = y;
 130    vertex[2] = 0.f; /*z*/
 131    vertex[3] = 1.f; /*w*/
 132
 133    vertex[4] = s;   /*s*/
 134    vertex[5] = t;   /*t*/
 135    vertex[6] = 0.f; /*r*/
 136    vertex[7] = 1.f; /*q*/
 137
 138    r->num_vertices += 8;
 139 }
 140
 141 static void
 142 add_vertex_data1(struct xorg_renderer *r,
 143                  float srcX, float srcY,  float dstX, float dstY,
 144                  float width, float height,
 145                  struct pipe_texture *src, float *src_matrix)
 146 {
 147    float s0, t0, s1, t1;
 148    float pt0[2], pt1[2];
 149
 150    pt0[0] = srcX;
 151    pt0[1] = srcY;
 152    pt1[0] = (srcX + width);
 153    pt1[1] = (srcY + height);
 154
 155    if (src_matrix) {
 156       map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
 157       map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
 158    }
 159
 160    s0 =  pt0[0] / src->width[0];
 161    s1 =  pt1[0] / src->width[0];
 162    t0 =  pt0[1] / src->height[0];
 163    t1 =  pt1[1] / src->height[0];
 164
 165    /* 1st vertex */
 166    add_vertex_1tex(r, dstX, dstY, s0, t0);
 167    /* 2nd vertex */
 168    add_vertex_1tex(r, dstX + width, dstY, s1, t0);
 169    /* 3rd vertex */
 170    add_vertex_1tex(r, dstX + width, dstY + height, s1, t1);
 171    /* 4th vertex */
 172    add_vertex_1tex(r, dstX, dstY + height, s0, t1);
 173 }
 174
 175 static struct pipe_buffer *
 176 setup_vertex_data_tex(struct xorg_renderer *r,
 177                       float x0, float y0, float x1, float y1,
 178                       float s0, float t0, float s1, float t1,
 179                       float z)
 180 {
 181    /* 1st vertex */
 182    add_vertex_1tex(r, x0, y0, s0, t0);
 183    /* 2nd vertex */
 184    add_vertex_1tex(r, x1, y0, s1, t0);
 185    /* 3rd vertex */
 186    add_vertex_1tex(r, x1, y1, s1, t1);
 187    /* 4th vertex */
 188    add_vertex_1tex(r, x0, y1, s0, t1);
 189
 190    return renderer_buffer_create(r);
 191 }
 192
 193 static INLINE void
 194 add_vertex_2tex(struct xorg_renderer *r,
 195                 float x, float y,
 196                 float s0, float t0, float s1, float t1)
 197 {
 198    float *vertex = r->vertices + r->num_vertices;
 199
 200    vertex[0] = x;
 201    vertex[1] = y;
 202    vertex[2] = 0.f; /*z*/
 203    vertex[3] = 1.f; /*w*/
 204
 205    vertex[4] = s0;  /*s*/
 206    vertex[5] = t0;  /*t*/
 207    vertex[6] = 0.f; /*r*/
 208    vertex[7] = 1.f; /*q*/
 209
 210    vertex[8] = s1;  /*s*/
 211    vertex[9] = t1;  /*t*/
 212    vertex[10] = 0.f; /*r*/
 213    vertex[11] = 1.f; /*q*/
 214
 215    r->num_vertices += 12;
 216 }
 217
 218 static void
 219 add_vertex_data2(struct xorg_renderer *r,
 220                  float srcX, float srcY, float maskX, float maskY,
 221                  float dstX, float dstY, float width, float height,
 222                  struct pipe_texture *src,
 223                  struct pipe_texture *mask,
 224                  float *src_matrix, float *mask_matrix)
 225 {
 226    float src_s0, src_t0, src_s1, src_t1;
 227    float mask_s0, mask_t0, mask_s1, mask_t1;
 228    float spt0[2], spt1[2];
 229    float mpt0[2], mpt1[2];
 230
 231    spt0[0] = srcX;
 232    spt0[1] = srcY;
 233    spt1[0] = srcX + width;
 234    spt1[1] = srcY + height;
 235
 236    mpt0[0] = maskX;
 237    mpt0[1] = maskY;
 238    mpt1[0] = maskX + width;
 239    mpt1[1] = maskY + height;
 240
 241    if (src_matrix) {
 242       map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
 243       map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
 244    }
 245
 246    if (mask_matrix) {
 247       map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
 248       map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
 249    }
 250
 251    src_s0 = spt0[0] / src->width[0];
 252    src_t0 = spt0[1] / src->height[0];
 253    src_s1 = spt1[0] / src->width[0];
 254    src_t1 = spt1[1] / src->height[0];
 255
 256    mask_s0 = mpt0[0] / mask->width[0];
 257    mask_t0 = mpt0[1] / mask->height[0];
 258    mask_s1 = mpt1[0] / mask->width[0];
 259    mask_t1 = mpt1[1] / mask->height[0];
 260
 261    /* 1st vertex */
 262    add_vertex_2tex(r, dstX, dstY,
 263                    src_s0, src_t0, mask_s0, mask_t0);
 264    /* 2nd vertex */
 265    add_vertex_2tex(r, dstX + width, dstY,
 266                    src_s1, src_t0, mask_s1, mask_t0);
 267    /* 3rd vertex */
 268    add_vertex_2tex(r, dstX + width, dstY + height,
 269                    src_s1, src_t1, mask_s1, mask_t1);
 270    /* 4th vertex */
 271    add_vertex_2tex(r, dstX, dstY + height,
 272                    src_s0, src_t1, mask_s0, mask_t1);
 273 }
 274
 275 static struct pipe_buffer *
 276 setup_vertex_data_yuv(struct xorg_renderer *r,
 277                       float srcX, float srcY, float srcW, float srcH,
 278                       float dstX, float dstY, float dstW, float dstH,
 279                       struct pipe_texture **tex)
 280 {
 281    float s0, t0, s1, t1;
 282    float spt0[2], spt1[2];
 283
 284    spt0[0] = srcX;
 285    spt0[1] = srcY;
 286    spt1[0] = srcX + srcW;
 287    spt1[1] = srcY + srcH;
 288
 289    s0 = spt0[0] / tex[0]->width[0];
 290    t0 = spt0[1] / tex[0]->height[0];
 291    s1 = spt1[0] / tex[0]->width[0];
 292    t1 = spt1[1] / tex[0]->height[0];
 293
 294    /* 1st vertex */
 295    add_vertex_1tex(r, dstX, dstY, s0, t0);
 296    /* 2nd vertex */
 297    add_vertex_1tex(r, dstX + dstW, dstY,
 298                    s1, t0);
 299    /* 3rd vertex */
 300    add_vertex_1tex(r, dstX + dstW, dstY + dstH,
 301                    s1, t1);
 302    /* 4th vertex */
 303    add_vertex_1tex(r, dstX, dstY + dstH,
 304                    s0, t1);
 305
 306    return renderer_buffer_create(r);
 307 }
 308
 309
 310
 311 static void
 312 set_viewport(struct xorg_renderer *r, int width, int height,
 313              enum AxisOrientation orientation)
 314 {
 315    struct pipe_viewport_state viewport;
 316    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 317
 318    viewport.scale[0] =  width / 2.f;
 319    viewport.scale[1] =  height / y_scale;
 320    viewport.scale[2] =  1.0;
 321    viewport.scale[3] =  1.0;
 322    viewport.translate[0] = width / 2.f;
 323    viewport.translate[1] = height / 2.f;
 324    viewport.translate[2] = 0.0;
 325    viewport.translate[3] = 0.0;
 326
 327    cso_set_viewport(r->cso, &viewport);
 328 }
 329
 330
 331
 332 struct xorg_renderer * renderer_create(struct pipe_context *pipe)
 333 {
 334    struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
 335
 336    renderer->pipe = pipe;
 337    renderer->cso = cso_create_context(pipe);
 338    renderer->shaders = xorg_shaders_create(renderer);
 339
 340    renderer_init_state(renderer);
 341
 342    return renderer;
 343 }
 344
 345 void renderer_destroy(struct xorg_renderer *r)
 346 {
 347    struct pipe_constant_buffer *vsbuf = &r->vs_const_buffer;
 348    struct pipe_constant_buffer *fsbuf = &r->fs_const_buffer;
 349
 350    if (vsbuf && vsbuf->buffer)
 351       pipe_buffer_reference(&vsbuf->buffer, NULL);
 352
 353    if (fsbuf && fsbuf->buffer)
 354       pipe_buffer_reference(&fsbuf->buffer, NULL);
 355
 356    if (r->shaders) {
 357       xorg_shaders_destroy(r->shaders);
 358       r->shaders = NULL;
 359    }
 360
 361    if (r->cso) {
 362       cso_release_all(r->cso);
 363       cso_destroy_context(r->cso);
 364       r->cso = NULL;
 365    }
 366 }
 367
 368 void renderer_bind_framebuffer(struct xorg_renderer *r,
 369                                struct exa_pixmap_priv *priv)
 370 {
 371    unsigned i;
 372    struct pipe_framebuffer_state state;
 373    struct pipe_surface *surface = xorg_gpu_surface(r->pipe->screen, priv);
 374    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 375
 376    state.width  = priv->tex->width[0];
 377    state.height = priv->tex->height[0];
 378
 379    state.nr_cbufs = 1;
 380    state.cbufs[0] = surface;
 381    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 382       state.cbufs[i] = 0;
 383
 384    /* currently we don't use depth/stencil */
 385    state.zsbuf = 0;
 386
 387    cso_set_framebuffer(r->cso, &state);
 388
 389    /* we do fire and forget for the framebuffer, this is the forget part */
 390    pipe_surface_reference(&surface, NULL);
 391 }
 392
 393 void renderer_bind_viewport(struct xorg_renderer *r,
 394                             struct exa_pixmap_priv *dst)
 395 {
 396    int width = dst->tex->width[0];
 397    int height = dst->tex->height[0];
 398
 399    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 400
 401    set_viewport(r, width, height, Y0_TOP);
 402 }
 403
 404 void renderer_bind_rasterizer(struct xorg_renderer *r)
 405 {
 406    struct pipe_rasterizer_state raster;
 407
 408    /* XXX: move to renderer_init_state? */
 409    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 410    raster.gl_rasterization_rules = 1;
 411    cso_set_rasterizer(r->cso, &raster);
 412 }
 413
 414 void renderer_set_constants(struct xorg_renderer *r,
 415                             int shader_type,
 416                             const float *params,
 417                             int param_bytes)
 418 {
 419    struct pipe_constant_buffer *cbuf =
 420       (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
 421       &r->fs_const_buffer;
 422
 423    pipe_buffer_reference(&cbuf->buffer, NULL);
 424    cbuf->buffer = pipe_buffer_create(r->pipe->screen, 16,
 425                                      PIPE_BUFFER_USAGE_CONSTANT,
 426                                      param_bytes);
 427
 428    if (cbuf->buffer) {
 429       pipe_buffer_write(r->pipe->screen, cbuf->buffer,
 430                         0, param_bytes, params);
 431    }
 432    r->pipe->set_constant_buffer(r->pipe, shader_type, 0, cbuf);
 433 }
 434
 435 static void
 436 setup_vs_constant_buffer(struct xorg_renderer *r,
 437                          int width, int height)
 438 {
 439    const int param_bytes = 8 * sizeof(float);
 440    float vs_consts[8] = {
 441       2.f/width, 2.f/height, 1, 1,
 442       -1, -1, 0, 0
 443    };
 444    renderer_set_constants(r, PIPE_SHADER_VERTEX,
 445                           vs_consts, param_bytes);
 446 }
 447
 448 static void
 449 setup_fs_constant_buffer(struct xorg_renderer *r)
 450 {
 451    const int param_bytes = 4 * sizeof(float);
 452    const float fs_consts[8] = {
 453       0, 0, 0, 1,
 454    };
 455    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 456                           fs_consts, param_bytes);
 457 }
 458
 459 static INLINE void shift_rectx(float coords[4],
 460                                const float *bounds,
 461                                const float shift)
 462 {
 463    coords[0] += shift;
 464    coords[2] -= shift;
 465    if (bounds) {
 466       coords[2] = MIN2(coords[2], bounds[2]);
 467       /* bound x/y + width/height */
 468       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 469          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 470       }
 471    }
 472 }
 473
 474 static INLINE void shift_recty(float coords[4],
 475                                const float *bounds,
 476                                const float shift)
 477 {
 478    coords[1] += shift;
 479    coords[3] -= shift;
 480    if (bounds) {
 481       coords[3] = MIN2(coords[3], bounds[3]);
 482       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 483          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 484       }
 485    }
 486 }
 487
 488 static INLINE void bound_rect(float coords[4],
 489                               const float bounds[4],
 490                               float shift[4])
 491 {
 492    /* if outside the bounds */
 493    if (coords[0] > (bounds[0] + bounds[2]) ||
 494        coords[1] > (bounds[1] + bounds[3]) ||
 495        (coords[0] + coords[2]) < bounds[0] ||
 496        (coords[1] + coords[3]) < bounds[1]) {
 497       coords[0] = 0.f;
 498       coords[1] = 0.f;
 499       coords[2] = 0.f;
 500       coords[3] = 0.f;
 501       shift[0] = 0.f;
 502       shift[1] = 0.f;
 503       return;
 504    }
 505
 506    /* bound x */
 507    if (coords[0] < bounds[0]) {
 508       shift[0] = bounds[0] - coords[0];
 509       coords[2] -= shift[0];
 510       coords[0] = bounds[0];
 511    } else
 512       shift[0] = 0.f;
 513
 514    /* bound y */
 515    if (coords[1] < bounds[1]) {
 516       shift[1] = bounds[1] - coords[1];
 517       coords[3] -= shift[1];
 518       coords[1] = bounds[1];
 519    } else
 520       shift[1] = 0.f;
 521
 522    shift[2] = bounds[2] - coords[2];
 523    shift[3] = bounds[3] - coords[3];
 524    /* bound width/height */
 525    coords[2] = MIN2(coords[2], bounds[2]);
 526    coords[3] = MIN2(coords[3], bounds[3]);
 527
 528    /* bound x/y + width/height */
 529    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 530       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 531    }
 532    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 533       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 534    }
 535
 536    /* if outside the bounds */
 537    if ((coords[0] + coords[2]) < bounds[0] ||
 538        (coords[1] + coords[3]) < bounds[1]) {
 539       coords[0] = 0.f;
 540       coords[1] = 0.f;
 541       coords[2] = 0.f;
 542       coords[3] = 0.f;
 543       return;
 544    }
 545 }
 546
 547 static INLINE void sync_size(float *src_loc, float *dst_loc)
 548 {
 549    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 550    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 551    dst_loc[2] = src_loc[2];
 552    dst_loc[3] = src_loc[3];
 553 }
 554
 555 static void renderer_copy_texture(struct xorg_renderer *r,
 556                                   struct pipe_texture *src,
 557                                   float sx1, float sy1,
 558                                   float sx2, float sy2,
 559                                   struct pipe_texture *dst,
 560                                   float dx1, float dy1,
 561                                   float dx2, float dy2)
 562 {
 563    struct pipe_context *pipe = r->pipe;
 564    struct pipe_screen *screen = pipe->screen;
 565    struct pipe_buffer *buf;
 566    struct pipe_surface *dst_surf = screen->get_tex_surface(
 567       screen, dst, 0, 0, 0,
 568       PIPE_BUFFER_USAGE_GPU_WRITE);
 569    struct pipe_framebuffer_state fb;
 570    float s0, t0, s1, t1;
 571    struct xorg_shader shader;
 572
 573    assert(src->width[0] != 0);
 574    assert(src->height[0] != 0);
 575    assert(dst->width[0] != 0);
 576    assert(dst->height[0] != 0);
 577
 578 #if 1
 579    s0 = sx1 / src->width[0];
 580    s1 = sx2 / src->width[0];
 581    t0 = sy1 / src->height[0];
 582    t1 = sy2 / src->height[0];
 583 #else
 584    s0 = 0;
 585    s1 = 1;
 586    t0 = 0;
 587    t1 = 1;
 588 #endif
 589
 590 #if 0
 591    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 592                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 593                 s0, t0, s1, t1);
 594 #endif
 595
 596    assert(screen->is_format_supported(screen, dst_surf->format,
 597                                       PIPE_TEXTURE_2D,
 598                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 599                                       0));
 600
 601    /* save state (restored below) */
 602    cso_save_blend(r->cso);
 603    cso_save_samplers(r->cso);
 604    cso_save_sampler_textures(r->cso);
 605    cso_save_framebuffer(r->cso);
 606    cso_save_fragment_shader(r->cso);
 607    cso_save_vertex_shader(r->cso);
 608
 609    cso_save_viewport(r->cso);
 610
 611
 612    /* set misc state we care about */
 613    {
 614       struct pipe_blend_state blend;
 615       memset(&blend, 0, sizeof(blend));
 616       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 617       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 618       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 619       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 620       blend.colormask = PIPE_MASK_RGBA;
 621       cso_set_blend(r->cso, &blend);
 622    }
 623
 624    /* sampler */
 625    {
 626       struct pipe_sampler_state sampler;
 627       memset(&sampler, 0, sizeof(sampler));
 628       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 629       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 630       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 631       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 632       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 633       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 634       sampler.normalized_coords = 1;
 635       cso_single_sampler(r->cso, 0, &sampler);
 636       cso_single_sampler_done(r->cso);
 637    }
 638
 639    set_viewport(r, dst_surf->width, dst_surf->height, Y0_TOP);
 640
 641    /* texture */
 642    cso_set_sampler_textures(r->cso, 1, &src);
 643
 644    renderer_bind_rasterizer(r);
 645
 646    /* shaders */
 647    shader = xorg_shaders_get(r->shaders,
 648                              VS_COMPOSITE,
 649                              FS_COMPOSITE);
 650    cso_set_vertex_shader_handle(r->cso, shader.vs);
 651    cso_set_fragment_shader_handle(r->cso, shader.fs);
 652
 653    /* drawing dest */
 654    memset(&fb, 0, sizeof(fb));
 655    fb.width = dst_surf->width;
 656    fb.height = dst_surf->height;
 657    fb.nr_cbufs = 1;
 658    fb.cbufs[0] = dst_surf;
 659    {
 660       int i;
 661       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 662          fb.cbufs[i] = 0;
 663    }
 664    cso_set_framebuffer(r->cso, &fb);
 665    setup_vs_constant_buffer(r, fb.width, fb.height);
 666    setup_fs_constant_buffer(r);
 667
 668    /* draw quad */
 669    buf = setup_vertex_data_tex(r,
 670                                dx1, dy1,
 671                                dx2, dy2,
 672                                s0, t0, s1, t1,
 673                                0.0f);
 674
 675    if (buf) {
 676       util_draw_vertex_buffer(r->pipe, buf, 0,
 677                               PIPE_PRIM_QUADS,
 678                               4,  /* verts */
 679                               2); /* attribs/vert */
 680
 681       pipe_buffer_reference(&buf, NULL);
 682    }
 683
 684    /* restore state we changed */
 685    cso_restore_blend(r->cso);
 686    cso_restore_samplers(r->cso);
 687    cso_restore_sampler_textures(r->cso);
 688    cso_restore_framebuffer(r->cso);
 689    cso_restore_vertex_shader(r->cso);
 690    cso_restore_fragment_shader(r->cso);
 691    cso_restore_viewport(r->cso);
 692
 693    pipe_surface_reference(&dst_surf, NULL);
 694 }
 695
 696 static struct pipe_texture *
 697 create_sampler_texture(struct xorg_renderer *r,
 698                        struct pipe_texture *src)
 699 {
 700    enum pipe_format format;
 701    struct pipe_context *pipe = r->pipe;
 702    struct pipe_screen *screen = pipe->screen;
 703    struct pipe_texture *pt;
 704    struct pipe_texture templ;
 705
 706    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 707
 708    /* the coming in texture should already have that invariance */
 709    debug_assert(screen->is_format_supported(screen, src->format,
 710                                             PIPE_TEXTURE_2D,
 711                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 712
 713    format = src->format;
 714
 715    memset(&templ, 0, sizeof(templ));
 716    templ.target = PIPE_TEXTURE_2D;
 717    templ.format = format;
 718    templ.last_level = 0;
 719    templ.width[0] = src->width[0];
 720    templ.height[0] = src->height[0];
 721    templ.depth[0] = 1;
 722    pf_get_block(format, &templ.block);
 723    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 724
 725    pt = screen->texture_create(screen, &templ);
 726
 727    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 728
 729    if (!pt)
 730       return NULL;
 731
 732    {
 733       /* copy source framebuffer surface into texture */
 734       struct pipe_surface *ps_read = screen->get_tex_surface(
 735          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 736       struct pipe_surface *ps_tex = screen->get_tex_surface(
 737          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 738       if (pipe->surface_copy) {
 739          pipe->surface_copy(pipe,
 740                 ps_tex, /* dest */
 741                 0, 0, /* destx/y */
 742                 ps_read,
 743                 0, 0, src->width[0], src->height[0]);
 744       } else {
 745           util_surface_copy(pipe, FALSE,
 746                 ps_tex, /* dest */
 747                 0, 0, /* destx/y */
 748                 ps_read,
 749                 0, 0, src->width[0], src->height[0]);
 750       }
 751       pipe_surface_reference(&ps_read, NULL);
 752       pipe_surface_reference(&ps_tex, NULL);
 753    }
 754
 755    return pt;
 756 }
 757
 758
 759 void renderer_copy_pixmap(struct xorg_renderer *r,
 760                           struct exa_pixmap_priv *dst_priv, int dx, int dy,
 761                           struct exa_pixmap_priv *src_priv, int sx, int sy,
 762                           int width, int height)
 763 {
 764    float dst_loc[4], src_loc[4];
 765    float dst_bounds[4], src_bounds[4];
 766    float src_shift[4], dst_shift[4], shift[4];
 767    struct pipe_texture *dst = dst_priv->tex;
 768    struct pipe_texture *src = src_priv->tex;
 769
 770    if (r->pipe->is_texture_referenced(r->pipe, src, 0, 0) &
 771        PIPE_REFERENCED_FOR_WRITE)
 772       r->pipe->flush(r->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 773
 774    dst_loc[0] = dx;
 775    dst_loc[1] = dy;
 776    dst_loc[2] = width;
 777    dst_loc[3] = height;
 778    dst_bounds[0] = 0.f;
 779    dst_bounds[1] = 0.f;
 780    dst_bounds[2] = dst->width[0];
 781    dst_bounds[3] = dst->height[0];
 782
 783    src_loc[0] = sx;
 784    src_loc[1] = sy;
 785    src_loc[2] = width;
 786    src_loc[3] = height;
 787    src_bounds[0] = 0.f;
 788    src_bounds[1] = 0.f;
 789    src_bounds[2] = src->width[0];
 790    src_bounds[3] = src->height[0];
 791
 792    bound_rect(src_loc, src_bounds, src_shift);
 793    bound_rect(dst_loc, dst_bounds, dst_shift);
 794    shift[0] = src_shift[0] - dst_shift[0];
 795    shift[1] = src_shift[1] - dst_shift[1];
 796
 797    if (shift[0] < 0)
 798       shift_rectx(src_loc, src_bounds, -shift[0]);
 799    else
 800       shift_rectx(dst_loc, dst_bounds, shift[0]);
 801
 802    if (shift[1] < 0)
 803       shift_recty(src_loc, src_bounds, -shift[1]);
 804    else
 805       shift_recty(dst_loc, dst_bounds, shift[1]);
 806
 807    sync_size(src_loc, dst_loc);
 808
 809    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
 810        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
 811       struct pipe_texture *temp_src = src;
 812
 813       if (src == dst)
 814          temp_src = create_sampler_texture(r, src);
 815
 816       renderer_copy_texture(r,
 817                             temp_src,
 818                             src_loc[0],
 819                             src_loc[1],
 820                             src_loc[0] + src_loc[2],
 821                             src_loc[1] + src_loc[3],
 822                             dst,
 823                             dst_loc[0],
 824                             dst_loc[1],
 825                             dst_loc[0] + dst_loc[2],
 826                             dst_loc[1] + dst_loc[3]);
 827
 828       if (src == dst)
 829          pipe_texture_reference(&temp_src, NULL);
 830    }
 831 }
 832
 833 void renderer_draw_yuv(struct xorg_renderer *r,
 834                        int src_x, int src_y, int src_w, int src_h,
 835                        int dst_x, int dst_y, int dst_w, int dst_h,
 836                        struct pipe_texture **textures)
 837 {
 838    struct pipe_context *pipe = r->pipe;
 839    struct pipe_buffer *buf = 0;
 840
 841    buf = setup_vertex_data_yuv(r,
 842                                src_x, src_y, src_w, src_h,
 843                                dst_x, dst_y, dst_w, dst_h,
 844                                textures);
 845
 846    if (buf) {
 847       const int num_attribs = 2; /*pos + tex coord*/
 848
 849       util_draw_vertex_buffer(pipe, buf, 0,
 850                               PIPE_PRIM_QUADS,
 851                               4,  /* verts */
 852                               num_attribs); /* attribs/vert */
 853
 854       pipe_buffer_reference(&buf, NULL);
 855    }
 856 }
 857
 858 void renderer_begin_solid(struct xorg_renderer *r)
 859 {
 860    r->num_vertices = 0;
 861    r->num_attributes = 2;
 862 }
 863
 864 void renderer_solid(struct xorg_renderer *r,
 865                     int x0, int y0,
 866                     int x1, int y1,
 867                     float *color)
 868 {
 869    /*
 870    debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
 871    x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
 872
 873    renderer_draw_conditional(r, 4 * 8);
 874
 875    /* 1st vertex */
 876    add_vertex_color(r, x0, y0, color);
 877    /* 2nd vertex */
 878    add_vertex_color(r, x1, y0, color);
 879    /* 3rd vertex */
 880    add_vertex_color(r, x1, y1, color);
 881    /* 4th vertex */
 882    add_vertex_color(r, x0, y1, color);
 883 }
 884
 885 void renderer_draw_flush(struct xorg_renderer *r)
 886 {
 887    renderer_draw_conditional(r, 0);
 888 }
 889
 890 void renderer_begin_textures(struct xorg_renderer *r,
 891                              struct pipe_texture **textures,
 892                              int num_textures)
 893 {
 894    r->num_attributes = 1 + num_textures;
 895 }
 896
 897 void renderer_texture(struct xorg_renderer *r,
 898                       int *pos,
 899                       int width, int height,
 900                       struct pipe_texture **textures,
 901                       int num_textures,
 902                       float *src_matrix,
 903                       float *mask_matrix)
 904 {
 905
 906 #if 0
 907    if (src_matrix) {
 908       debug_printf("src_matrix = \n");
 909       debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
 910       debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
 911       debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
 912    }
 913    if (mask_matrix) {
 914       debug_printf("mask_matrix = \n");
 915       debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
 916       debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
 917       debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
 918    }
 919 #endif
 920
 921    switch(r->num_attributes) {
 922    case 2:
 923       renderer_draw_conditional(r, 4 * 8);
 924       add_vertex_data1(r,
 925                        pos[0], pos[1], /* src */
 926                        pos[4], pos[5], /* dst */
 927                        width, height,
 928                        textures[0], src_matrix);
 929       break;
 930    case 3:
 931       renderer_draw_conditional(r, 4 * 12);
 932       add_vertex_data2(r,
 933                        pos[0], pos[1], /* src */
 934                        pos[2], pos[3], /* mask */
 935                        pos[4], pos[5], /* dst */
 936                        width, height,
 937                        textures[0], textures[1],
 938                        src_matrix, mask_matrix);
 939       break;
 940    default:
 941       debug_assert(!"Unsupported number of textures");
 942       break;
 943    }
 944 }
 945
 946
 947 void renderer_draw_textures(struct xorg_renderer *r,
 948                             int *pos,
 949                             int width, int height,
 950                             struct pipe_texture **textures,
 951                             int num_textures,
 952                             float *src_matrix, float *mask_matrix)
 953 {
 954 #if 0
 955    if (src_matrix) {
 956       debug_printf("src_matrix = \n");
 957       debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
 958       debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
 959       debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
 960    }
 961    if (mask_matrix) {
 962       debug_printf("mask_matrix = \n");
 963       debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
 964       debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
 965       debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
 966    }
 967 #endif
 968
 969    r->num_attributes = 1 + num_textures;
 970    switch(num_textures) {
 971    case 1:
 972       add_vertex_data1(r,
 973                        pos[0], pos[1], /* src */
 974                        pos[4], pos[5], /* dst */
 975                        width, height,
 976                        textures[0], src_matrix);
 977       break;
 978    case 2:
 979       add_vertex_data2(r,
 980                        pos[0], pos[1], /* src */
 981                        pos[2], pos[3], /* mask */
 982                        pos[4], pos[5], /* dst */
 983                        width, height,
 984                        textures[0], textures[1],
 985                        src_matrix, mask_matrix);
 986       break;
 987    case 3:
 988    default:
 989       debug_assert(!"Unsupported number of textures");
 990       break;
 991    }
 992
 993    renderer_draw(r);
 994 }
 995