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 void
  48 renderer_init_state(struct xorg_renderer *r)
  49 {
  50    struct pipe_depth_stencil_alpha_state dsa;
  51
  52    /* set common initial clip state */
  53    memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
  54    cso_set_depth_stencil_alpha(r->cso, &dsa);
  55 }
  56
  57
  58 static INLINE void
  59 setup_vertex0(float vertex[2][4], float x, float y,
  60               float color[4])
  61 {
  62    vertex[0][0] = x;
  63    vertex[0][1] = y;
  64    vertex[0][2] = 0.f; /*z*/
  65    vertex[0][3] = 1.f; /*w*/
  66
  67    vertex[1][0] = color[0]; /*r*/
  68    vertex[1][1] = color[1]; /*g*/
  69    vertex[1][2] = color[2]; /*b*/
  70    vertex[1][3] = color[3]; /*a*/
  71 }
  72
  73 static INLINE void
  74 setup_vertex1(float vertex[2][4], float x, float y, float s, float t)
  75 {
  76    vertex[0][0] = x;
  77    vertex[0][1] = y;
  78    vertex[0][2] = 0.f; /*z*/
  79    vertex[0][3] = 1.f; /*w*/
  80
  81    vertex[1][0] = s;   /*s*/
  82    vertex[1][1] = t;   /*t*/
  83    vertex[1][2] = 0.f; /*r*/
  84    vertex[1][3] = 1.f; /*q*/
  85 }
  86
  87 static struct pipe_buffer *
  88 setup_vertex_data1(struct xorg_renderer *r,
  89                    float srcX, float srcY,  float dstX, float dstY,
  90                    float width, float height,
  91                    struct pipe_texture *src, float *src_matrix)
  92 {
  93    float s0, t0, s1, t1;
  94    float pt0[2], pt1[2];
  95
  96    pt0[0] = srcX;
  97    pt0[1] = srcY;
  98    pt1[0] = (srcX + width);
  99    pt1[1] = (srcY + height);
 100
 101    if (src_matrix) {
 102       map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
 103       map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
 104    }
 105
 106    s0 =  pt0[0] / src->width[0];
 107    s1 =  pt1[0] / src->width[0];
 108    t0 =  pt0[1] / src->height[0];
 109    t1 =  pt1[1] / src->height[0];
 110
 111    /* 1st vertex */
 112    setup_vertex1(r->vertices2[0], dstX, dstY, s0, t0);
 113    /* 2nd vertex */
 114    setup_vertex1(r->vertices2[1], dstX + width, dstY, s1, t0);
 115    /* 3rd vertex */
 116    setup_vertex1(r->vertices2[2], dstX + width, dstY + height, s1, t1);
 117    /* 4th vertex */
 118    setup_vertex1(r->vertices2[3], dstX, dstY + height, s0, t1);
 119
 120    return pipe_user_buffer_create(r->pipe->screen,
 121                                   r->vertices2,
 122                                   sizeof(r->vertices2));
 123 }
 124
 125 static struct pipe_buffer *
 126 setup_vertex_data_tex(struct xorg_renderer *r,
 127                       float x0, float y0, float x1, float y1,
 128                       float s0, float t0, float s1, float t1,
 129                       float z)
 130 {
 131    /* 1st vertex */
 132    setup_vertex1(r->vertices2[0], x0, y0, s0, t0);
 133    /* 2nd vertex */
 134    setup_vertex1(r->vertices2[1], x1, y0, s1, t0);
 135    /* 3rd vertex */
 136    setup_vertex1(r->vertices2[2], x1, y1, s1, t1);
 137    /* 4th vertex */
 138    setup_vertex1(r->vertices2[3], x0, y1, s0, t1);
 139
 140    return pipe_user_buffer_create(r->pipe->screen,
 141                                   r->vertices2,
 142                                   sizeof(r->vertices2));
 143 }
 144
 145 static INLINE void
 146 setup_vertex2(float vertex[3][4], float x, float y,
 147               float s0, float t0, float s1, float t1)
 148 {
 149    vertex[0][0] = x;
 150    vertex[0][1] = y;
 151    vertex[0][2] = 0.f; /*z*/
 152    vertex[0][3] = 1.f; /*w*/
 153
 154    vertex[1][0] = s0;  /*s*/
 155    vertex[1][1] = t0;  /*t*/
 156    vertex[1][2] = 0.f; /*r*/
 157    vertex[1][3] = 1.f; /*q*/
 158
 159    vertex[2][0] = s1;  /*s*/
 160    vertex[2][1] = t1;  /*t*/
 161    vertex[2][2] = 0.f; /*r*/
 162    vertex[2][3] = 1.f; /*q*/
 163 }
 164
 165 static struct pipe_buffer *
 166 setup_vertex_data2(struct xorg_renderer *r,
 167                    float srcX, float srcY, float maskX, float maskY,
 168                    float dstX, float dstY, float width, float height,
 169                    struct pipe_texture *src,
 170                    struct pipe_texture *mask,
 171                    float *src_matrix, float *mask_matrix)
 172 {
 173    float src_s0, src_t0, src_s1, src_t1;
 174    float mask_s0, mask_t0, mask_s1, mask_t1;
 175    float spt0[2], spt1[2];
 176    float mpt0[2], mpt1[2];
 177
 178    spt0[0] = srcX;
 179    spt0[1] = srcY;
 180    spt1[0] = srcX + width;
 181    spt1[1] = srcY + height;
 182
 183    mpt0[0] = maskX;
 184    mpt0[1] = maskY;
 185    mpt1[0] = maskX + width;
 186    mpt1[1] = maskY + height;
 187
 188    if (src_matrix) {
 189       map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
 190       map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
 191    }
 192
 193    if (mask_matrix) {
 194       map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
 195       map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
 196    }
 197
 198    src_s0 = spt0[0] / src->width[0];
 199    src_t0 = spt0[1] / src->height[0];
 200    src_s1 = spt1[0] / src->width[0];
 201    src_t1 = spt1[1] / src->height[0];
 202
 203    mask_s0 = mpt0[0] / mask->width[0];
 204    mask_t0 = mpt0[1] / mask->height[0];
 205    mask_s1 = mpt1[0] / mask->width[0];
 206    mask_t1 = mpt1[1] / mask->height[0];
 207
 208    /* 1st vertex */
 209    setup_vertex2(r->vertices3[0], dstX, dstY,
 210                  src_s0, src_t0, mask_s0, mask_t0);
 211    /* 2nd vertex */
 212    setup_vertex2(r->vertices3[1], dstX + width, dstY,
 213                  src_s1, src_t0, mask_s1, mask_t0);
 214    /* 3rd vertex */
 215    setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
 216                  src_s1, src_t1, mask_s1, mask_t1);
 217    /* 4th vertex */
 218    setup_vertex2(r->vertices3[3], dstX, dstY + height,
 219                  src_s0, src_t1, mask_s0, mask_t1);
 220
 221
 222    return pipe_user_buffer_create(r->pipe->screen,
 223                                   r->vertices3,
 224                                   sizeof(r->vertices3));
 225 }
 226
 227 static struct pipe_buffer *
 228 setup_vertex_data_yuv(struct xorg_renderer *r,
 229                       float srcX, float srcY,
 230                       float dstX, float dstY,
 231                       float width, float height,
 232                       struct pipe_texture **tex)
 233 {
 234    float s0, t0, s1, t1;
 235    float spt0[2], spt1[2];
 236
 237    spt0[0] = srcX;
 238    spt0[1] = srcY;
 239    spt1[0] = srcX + width;
 240    spt1[1] = srcY + height;
 241
 242    s0 = spt0[0] / tex[0]->width[0];
 243    t0 = spt0[1] / tex[0]->height[0];
 244    s1 = spt1[0] / tex[0]->width[0];
 245    t1 = spt1[1] / tex[0]->height[0];
 246
 247    /* 1st vertex */
 248    setup_vertex1(r->vertices2[0], dstX, dstY, s0, t0);
 249    /* 2nd vertex */
 250    setup_vertex1(r->vertices2[1], dstX + width, dstY,
 251                  s1, t0);
 252    /* 3rd vertex */
 253    setup_vertex1(r->vertices2[2], dstX + width, dstY + height,
 254                  s1, t1);
 255    /* 4th vertex */
 256    setup_vertex1(r->vertices2[3], dstX, dstY + height,
 257                  s0, t1);
 258
 259
 260    return pipe_user_buffer_create(r->pipe->screen,
 261                                   r->vertices2,
 262                                   sizeof(r->vertices2));
 263 }
 264
 265
 266
 267 static void
 268 set_viewport(struct xorg_renderer *r, int width, int height,
 269              enum AxisOrientation orientation)
 270 {
 271    struct pipe_viewport_state viewport;
 272    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 273
 274    viewport.scale[0] =  width / 2.f;
 275    viewport.scale[1] =  height / y_scale;
 276    viewport.scale[2] =  1.0;
 277    viewport.scale[3] =  1.0;
 278    viewport.translate[0] = width / 2.f;
 279    viewport.translate[1] = height / 2.f;
 280    viewport.translate[2] = 0.0;
 281    viewport.translate[3] = 0.0;
 282
 283    cso_set_viewport(r->cso, &viewport);
 284 }
 285
 286
 287
 288 struct xorg_renderer * renderer_create(struct pipe_context *pipe)
 289 {
 290    struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
 291
 292    renderer->pipe = pipe;
 293    renderer->cso = cso_create_context(pipe);
 294    renderer->shaders = xorg_shaders_create(renderer);
 295
 296    renderer_init_state(renderer);
 297
 298    return renderer;
 299 }
 300
 301 void renderer_destroy(struct xorg_renderer *r)
 302 {
 303    struct pipe_constant_buffer *vsbuf = &r->vs_const_buffer;
 304    struct pipe_constant_buffer *fsbuf = &r->fs_const_buffer;
 305
 306    if (vsbuf && vsbuf->buffer)
 307       pipe_buffer_reference(&vsbuf->buffer, NULL);
 308
 309    if (fsbuf && fsbuf->buffer)
 310       pipe_buffer_reference(&fsbuf->buffer, NULL);
 311
 312    if (r->shaders) {
 313       xorg_shaders_destroy(r->shaders);
 314       r->shaders = NULL;
 315    }
 316
 317    if (r->cso) {
 318       cso_release_all(r->cso);
 319       cso_destroy_context(r->cso);
 320       r->cso = NULL;
 321    }
 322 }
 323
 324 void renderer_bind_framebuffer(struct xorg_renderer *r,
 325                                struct exa_pixmap_priv *priv)
 326 {
 327    unsigned i;
 328    struct pipe_framebuffer_state state;
 329    struct pipe_surface *surface = xorg_gpu_surface(r->pipe->screen, priv);
 330    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 331
 332    state.width  = priv->tex->width[0];
 333    state.height = priv->tex->height[0];
 334
 335    state.nr_cbufs = 1;
 336    state.cbufs[0] = surface;
 337    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 338       state.cbufs[i] = 0;
 339
 340    /* currently we don't use depth/stencil */
 341    state.zsbuf = 0;
 342
 343    cso_set_framebuffer(r->cso, &state);
 344
 345    /* we do fire and forget for the framebuffer, this is the forget part */
 346    pipe_surface_reference(&surface, NULL);
 347 }
 348
 349 void renderer_bind_viewport(struct xorg_renderer *r,
 350                             struct exa_pixmap_priv *dst)
 351 {
 352    int width = dst->tex->width[0];
 353    int height = dst->tex->height[0];
 354
 355    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 356
 357    set_viewport(r, width, height, Y0_TOP);
 358 }
 359
 360 void renderer_bind_rasterizer(struct xorg_renderer *r)
 361 {
 362    struct pipe_rasterizer_state raster;
 363
 364    /* XXX: move to renderer_init_state? */
 365    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 366    raster.gl_rasterization_rules = 1;
 367    cso_set_rasterizer(r->cso, &raster);
 368 }
 369
 370 void renderer_set_constants(struct xorg_renderer *r,
 371                             int shader_type,
 372                             const float *params,
 373                             int param_bytes)
 374 {
 375    struct pipe_constant_buffer *cbuf =
 376       (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
 377       &r->fs_const_buffer;
 378
 379    pipe_buffer_reference(&cbuf->buffer, NULL);
 380    cbuf->buffer = pipe_buffer_create(r->pipe->screen, 16,
 381                                      PIPE_BUFFER_USAGE_CONSTANT,
 382                                      param_bytes);
 383
 384    if (cbuf->buffer) {
 385       pipe_buffer_write(r->pipe->screen, cbuf->buffer,
 386                         0, param_bytes, params);
 387    }
 388    r->pipe->set_constant_buffer(r->pipe, shader_type, 0, cbuf);
 389 }
 390
 391 static void
 392 setup_vs_constant_buffer(struct xorg_renderer *r,
 393                          int width, int height)
 394 {
 395    const int param_bytes = 8 * sizeof(float);
 396    float vs_consts[8] = {
 397       2.f/width, 2.f/height, 1, 1,
 398       -1, -1, 0, 0
 399    };
 400    renderer_set_constants(r, PIPE_SHADER_VERTEX,
 401                           vs_consts, param_bytes);
 402 }
 403
 404 static void
 405 setup_fs_constant_buffer(struct xorg_renderer *r)
 406 {
 407    const int param_bytes = 4 * sizeof(float);
 408    const float fs_consts[8] = {
 409       0, 0, 0, 1,
 410    };
 411    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 412                           fs_consts, param_bytes);
 413 }
 414
 415 static INLINE void shift_rectx(float coords[4],
 416                                const float *bounds,
 417                                const float shift)
 418 {
 419    coords[0] += shift;
 420    coords[2] -= shift;
 421    if (bounds) {
 422       coords[2] = MIN2(coords[2], bounds[2]);
 423       /* bound x/y + width/height */
 424       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 425          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 426       }
 427    }
 428 }
 429
 430 static INLINE void shift_recty(float coords[4],
 431                                const float *bounds,
 432                                const float shift)
 433 {
 434    coords[1] += shift;
 435    coords[3] -= shift;
 436    if (bounds) {
 437       coords[3] = MIN2(coords[3], bounds[3]);
 438       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 439          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 440       }
 441    }
 442 }
 443
 444 static INLINE void bound_rect(float coords[4],
 445                               const float bounds[4],
 446                               float shift[4])
 447 {
 448    /* if outside the bounds */
 449    if (coords[0] > (bounds[0] + bounds[2]) ||
 450        coords[1] > (bounds[1] + bounds[3]) ||
 451        (coords[0] + coords[2]) < bounds[0] ||
 452        (coords[1] + coords[3]) < bounds[1]) {
 453       coords[0] = 0.f;
 454       coords[1] = 0.f;
 455       coords[2] = 0.f;
 456       coords[3] = 0.f;
 457       shift[0] = 0.f;
 458       shift[1] = 0.f;
 459       return;
 460    }
 461
 462    /* bound x */
 463    if (coords[0] < bounds[0]) {
 464       shift[0] = bounds[0] - coords[0];
 465       coords[2] -= shift[0];
 466       coords[0] = bounds[0];
 467    } else
 468       shift[0] = 0.f;
 469
 470    /* bound y */
 471    if (coords[1] < bounds[1]) {
 472       shift[1] = bounds[1] - coords[1];
 473       coords[3] -= shift[1];
 474       coords[1] = bounds[1];
 475    } else
 476       shift[1] = 0.f;
 477
 478    shift[2] = bounds[2] - coords[2];
 479    shift[3] = bounds[3] - coords[3];
 480    /* bound width/height */
 481    coords[2] = MIN2(coords[2], bounds[2]);
 482    coords[3] = MIN2(coords[3], bounds[3]);
 483
 484    /* bound x/y + width/height */
 485    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 486       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 487    }
 488    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 489       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 490    }
 491
 492    /* if outside the bounds */
 493    if ((coords[0] + coords[2]) < bounds[0] ||
 494        (coords[1] + coords[3]) < bounds[1]) {
 495       coords[0] = 0.f;
 496       coords[1] = 0.f;
 497       coords[2] = 0.f;
 498       coords[3] = 0.f;
 499       return;
 500    }
 501 }
 502
 503 static INLINE void sync_size(float *src_loc, float *dst_loc)
 504 {
 505    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 506    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 507    dst_loc[2] = src_loc[2];
 508    dst_loc[3] = src_loc[3];
 509 }
 510
 511 static void renderer_copy_texture(struct xorg_renderer *r,
 512                                   struct pipe_texture *src,
 513                                   float sx1, float sy1,
 514                                   float sx2, float sy2,
 515                                   struct pipe_texture *dst,
 516                                   float dx1, float dy1,
 517                                   float dx2, float dy2)
 518 {
 519    struct pipe_context *pipe = r->pipe;
 520    struct pipe_screen *screen = pipe->screen;
 521    struct pipe_buffer *buf;
 522    struct pipe_surface *dst_surf = screen->get_tex_surface(
 523       screen, dst, 0, 0, 0,
 524       PIPE_BUFFER_USAGE_GPU_WRITE);
 525    struct pipe_framebuffer_state fb;
 526    float s0, t0, s1, t1;
 527    struct xorg_shader shader;
 528
 529    assert(src->width[0] != 0);
 530    assert(src->height[0] != 0);
 531    assert(dst->width[0] != 0);
 532    assert(dst->height[0] != 0);
 533
 534 #if 1
 535    s0 = sx1 / src->width[0];
 536    s1 = sx2 / src->width[0];
 537    t0 = sy1 / src->height[0];
 538    t1 = sy2 / src->height[0];
 539 #else
 540    s0 = 0;
 541    s1 = 1;
 542    t0 = 0;
 543    t1 = 1;
 544 #endif
 545
 546 #if 0
 547    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 548                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 549                 s0, t0, s1, t1);
 550 #endif
 551
 552    assert(screen->is_format_supported(screen, dst_surf->format,
 553                                       PIPE_TEXTURE_2D,
 554                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 555                                       0));
 556
 557    /* save state (restored below) */
 558    cso_save_blend(r->cso);
 559    cso_save_samplers(r->cso);
 560    cso_save_sampler_textures(r->cso);
 561    cso_save_framebuffer(r->cso);
 562    cso_save_fragment_shader(r->cso);
 563    cso_save_vertex_shader(r->cso);
 564
 565    cso_save_viewport(r->cso);
 566
 567
 568    /* set misc state we care about */
 569    {
 570       struct pipe_blend_state blend;
 571       memset(&blend, 0, sizeof(blend));
 572       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 573       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 574       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 575       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 576       blend.colormask = PIPE_MASK_RGBA;
 577       cso_set_blend(r->cso, &blend);
 578    }
 579
 580    /* sampler */
 581    {
 582       struct pipe_sampler_state sampler;
 583       memset(&sampler, 0, sizeof(sampler));
 584       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 585       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 586       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 587       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 588       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 589       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 590       sampler.normalized_coords = 1;
 591       cso_single_sampler(r->cso, 0, &sampler);
 592       cso_single_sampler_done(r->cso);
 593    }
 594
 595    set_viewport(r, dst_surf->width, dst_surf->height, Y0_TOP);
 596
 597    /* texture */
 598    cso_set_sampler_textures(r->cso, 1, &src);
 599
 600    renderer_bind_rasterizer(r);
 601
 602    /* shaders */
 603    shader = xorg_shaders_get(r->shaders,
 604                              VS_COMPOSITE,
 605                              FS_COMPOSITE);
 606    cso_set_vertex_shader_handle(r->cso, shader.vs);
 607    cso_set_fragment_shader_handle(r->cso, shader.fs);
 608
 609    /* drawing dest */
 610    memset(&fb, 0, sizeof(fb));
 611    fb.width = dst_surf->width;
 612    fb.height = dst_surf->height;
 613    fb.nr_cbufs = 1;
 614    fb.cbufs[0] = dst_surf;
 615    {
 616       int i;
 617       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 618          fb.cbufs[i] = 0;
 619    }
 620    cso_set_framebuffer(r->cso, &fb);
 621    setup_vs_constant_buffer(r, fb.width, fb.height);
 622    setup_fs_constant_buffer(r);
 623
 624    /* draw quad */
 625    buf = setup_vertex_data_tex(r,
 626                                dx1, dy1,
 627                                dx2, dy2,
 628                                s0, t0, s1, t1,
 629                                0.0f);
 630
 631    if (buf) {
 632       util_draw_vertex_buffer(r->pipe, buf, 0,
 633                               PIPE_PRIM_TRIANGLE_FAN,
 634                               4,  /* verts */
 635                               2); /* attribs/vert */
 636
 637       pipe_buffer_reference(&buf, NULL);
 638    }
 639
 640    /* restore state we changed */
 641    cso_restore_blend(r->cso);
 642    cso_restore_samplers(r->cso);
 643    cso_restore_sampler_textures(r->cso);
 644    cso_restore_framebuffer(r->cso);
 645    cso_restore_vertex_shader(r->cso);
 646    cso_restore_fragment_shader(r->cso);
 647    cso_restore_viewport(r->cso);
 648
 649    pipe_surface_reference(&dst_surf, NULL);
 650 }
 651
 652 static struct pipe_texture *
 653 create_sampler_texture(struct xorg_renderer *r,
 654                        struct pipe_texture *src)
 655 {
 656    enum pipe_format format;
 657    struct pipe_context *pipe = r->pipe;
 658    struct pipe_screen *screen = pipe->screen;
 659    struct pipe_texture *pt;
 660    struct pipe_texture templ;
 661
 662    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 663
 664    /* the coming in texture should already have that invariance */
 665    debug_assert(screen->is_format_supported(screen, src->format,
 666                                             PIPE_TEXTURE_2D,
 667                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 668
 669    format = src->format;
 670
 671    memset(&templ, 0, sizeof(templ));
 672    templ.target = PIPE_TEXTURE_2D;
 673    templ.format = format;
 674    templ.last_level = 0;
 675    templ.width[0] = src->width[0];
 676    templ.height[0] = src->height[0];
 677    templ.depth[0] = 1;
 678    pf_get_block(format, &templ.block);
 679    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 680
 681    pt = screen->texture_create(screen, &templ);
 682
 683    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 684
 685    if (!pt)
 686       return NULL;
 687
 688    {
 689       /* copy source framebuffer surface into texture */
 690       struct pipe_surface *ps_read = screen->get_tex_surface(
 691          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 692       struct pipe_surface *ps_tex = screen->get_tex_surface(
 693          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 694       if (pipe->surface_copy) {
 695          pipe->surface_copy(pipe,
 696                 ps_tex, /* dest */
 697                 0, 0, /* destx/y */
 698                 ps_read,
 699                 0, 0, src->width[0], src->height[0]);
 700       } else {
 701           util_surface_copy(pipe, FALSE,
 702                 ps_tex, /* dest */
 703                 0, 0, /* destx/y */
 704                 ps_read,
 705                 0, 0, src->width[0], src->height[0]);
 706       }
 707       pipe_surface_reference(&ps_read, NULL);
 708       pipe_surface_reference(&ps_tex, NULL);
 709    }
 710
 711    return pt;
 712 }
 713
 714
 715 void renderer_copy_pixmap(struct xorg_renderer *r,
 716                           struct exa_pixmap_priv *dst_priv, int dx, int dy,
 717                           struct exa_pixmap_priv *src_priv, int sx, int sy,
 718                           int width, int height)
 719 {
 720    float dst_loc[4], src_loc[4];
 721    float dst_bounds[4], src_bounds[4];
 722    float src_shift[4], dst_shift[4], shift[4];
 723    struct pipe_texture *dst = dst_priv->tex;
 724    struct pipe_texture *src = src_priv->tex;
 725
 726    if (r->pipe->is_texture_referenced(r->pipe, src, 0, 0) &
 727        PIPE_REFERENCED_FOR_WRITE)
 728       r->pipe->flush(r->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 729
 730    dst_loc[0] = dx;
 731    dst_loc[1] = dy;
 732    dst_loc[2] = width;
 733    dst_loc[3] = height;
 734    dst_bounds[0] = 0.f;
 735    dst_bounds[1] = 0.f;
 736    dst_bounds[2] = dst->width[0];
 737    dst_bounds[3] = dst->height[0];
 738
 739    src_loc[0] = sx;
 740    src_loc[1] = sy;
 741    src_loc[2] = width;
 742    src_loc[3] = height;
 743    src_bounds[0] = 0.f;
 744    src_bounds[1] = 0.f;
 745    src_bounds[2] = src->width[0];
 746    src_bounds[3] = src->height[0];
 747
 748    bound_rect(src_loc, src_bounds, src_shift);
 749    bound_rect(dst_loc, dst_bounds, dst_shift);
 750    shift[0] = src_shift[0] - dst_shift[0];
 751    shift[1] = src_shift[1] - dst_shift[1];
 752
 753    if (shift[0] < 0)
 754       shift_rectx(src_loc, src_bounds, -shift[0]);
 755    else
 756       shift_rectx(dst_loc, dst_bounds, shift[0]);
 757
 758    if (shift[1] < 0)
 759       shift_recty(src_loc, src_bounds, -shift[1]);
 760    else
 761       shift_recty(dst_loc, dst_bounds, shift[1]);
 762
 763    sync_size(src_loc, dst_loc);
 764
 765    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
 766        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
 767       struct pipe_texture *temp_src = src;
 768
 769       if (src == dst)
 770          temp_src = create_sampler_texture(r, src);
 771
 772       renderer_copy_texture(r,
 773                             temp_src,
 774                             src_loc[0],
 775                             src_loc[1],
 776                             src_loc[0] + src_loc[2],
 777                             src_loc[1] + src_loc[3],
 778                             dst,
 779                             dst_loc[0],
 780                             dst_loc[1],
 781                             dst_loc[0] + dst_loc[2],
 782                             dst_loc[1] + dst_loc[3]);
 783
 784       if (src == dst)
 785          pipe_texture_reference(&temp_src, NULL);
 786    }
 787 }
 788
 789 void renderer_draw_solid_rect(struct xorg_renderer *r,
 790                               int x0, int y0,
 791                               int x1, int y1,
 792                               float *color)
 793 {
 794    struct pipe_context *pipe = r->pipe;
 795    struct pipe_buffer *buf = 0;
 796
 797    /*
 798    debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
 799    x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
 800    /* 1st vertex */
 801    setup_vertex0(r->vertices2[0], x0, y0, color);
 802    /* 2nd vertex */
 803    setup_vertex0(r->vertices2[1], x1, y0, color);
 804    /* 3rd vertex */
 805    setup_vertex0(r->vertices2[2], x1, y1, color);
 806    /* 4th vertex */
 807    setup_vertex0(r->vertices2[3], x0, y1, color);
 808
 809    buf = pipe_user_buffer_create(pipe->screen,
 810                                  r->vertices2,
 811                                  sizeof(r->vertices2));
 812
 813
 814    if (buf) {
 815       util_draw_vertex_buffer(pipe, buf, 0,
 816                               PIPE_PRIM_TRIANGLE_FAN,
 817                               4,  /* verts */
 818                               2); /* attribs/vert */
 819
 820       pipe_buffer_reference(&buf, NULL);
 821    }
 822 }
 823
 824 void renderer_draw_textures(struct xorg_renderer *r,
 825                             int *pos,
 826                             int width, int height,
 827                             struct pipe_texture **textures,
 828                             int num_textures,
 829                             float *src_matrix, float *mask_matrix)
 830 {
 831    struct pipe_context *pipe = r->pipe;
 832    struct pipe_buffer *buf = 0;
 833
 834 #if 0
 835    if (src_matrix) {
 836       debug_printf("src_matrix = \n");
 837       debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
 838       debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
 839       debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
 840    }
 841    if (mask_matrix) {
 842       debug_printf("mask_matrix = \n");
 843       debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
 844       debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
 845       debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
 846    }
 847 #endif
 848
 849    switch(num_textures) {
 850    case 1:
 851       buf = setup_vertex_data1(r,
 852                                pos[0], pos[1], /* src */
 853                                pos[4], pos[5], /* dst */
 854                                width, height,
 855                                textures[0], src_matrix);
 856       break;
 857    case 2:
 858       buf = setup_vertex_data2(r,
 859                                pos[0], pos[1], /* src */
 860                                pos[2], pos[3], /* mask */
 861                                pos[4], pos[5], /* dst */
 862                                width, height,
 863                                textures[0], textures[1],
 864                                src_matrix, mask_matrix);
 865       break;
 866    case 3:
 867       buf = setup_vertex_data_yuv(r,
 868                                   pos[0], pos[1],
 869                                   pos[2], pos[3],
 870                                   width, height,
 871                                   textures);
 872       break;
 873    default:
 874       debug_assert(!"Unsupported number of textures");
 875       break;
 876    }
 877
 878    if (buf) {
 879       int num_attribs = 1; /*pos*/
 880       num_attribs += num_textures;
 881
 882       util_draw_vertex_buffer(pipe, buf, 0,
 883                               PIPE_PRIM_TRIANGLE_FAN,
 884                               4,  /* verts */
 885                               num_attribs); /* attribs/vert */
 886
 887       pipe_buffer_reference(&buf, NULL);
 888    }
 889 }