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                    int srcX, int srcY,  int dstX, int dstY,
  90                    int width, int height,
  91                    struct pipe_texture *src, float *src_matrix)
  92 {
  93    float s0, t0, s1, t1, stmp, ttmp;
  94
  95    s0 = srcX / src->width[0];
  96    s1 = srcX + width / src->width[0];
  97    t0 = srcY / src->height[0];
  98    t1 = srcY + height / src->height[0];
  99
 100    if (src_matrix) {
 101       /* 1st vertex */
 102       map_point(src_matrix, s0, t0, &stmp, &ttmp);
 103       setup_vertex1(r->vertices2[0], dstX, dstY, stmp, ttmp);
 104       /* 2nd vertex */
 105       map_point(src_matrix, s1, t0, &stmp, &ttmp);
 106       setup_vertex1(r->vertices2[1], dstX + width, dstY, stmp, ttmp);
 107       /* 3rd vertex */
 108       map_point(src_matrix, s1, t1, &stmp, &ttmp);
 109       setup_vertex1(r->vertices2[2], dstX + width, dstY + height, stmp, ttmp);
 110       /* 4th vertex */
 111       map_point(src_matrix, s0, t1, &stmp, &ttmp);
 112       setup_vertex1(r->vertices2[3], dstX, dstY + height, stmp, ttmp);
 113    } else {
 114       /* 1st vertex */
 115       setup_vertex1(r->vertices2[0], dstX, dstY, s0, t0);
 116       /* 2nd vertex */
 117       setup_vertex1(r->vertices2[1], dstX + width, dstY, s1, t0);
 118       /* 3rd vertex */
 119       setup_vertex1(r->vertices2[2], dstX + width, dstY + height, s1, t1);
 120       /* 4th vertex */
 121       setup_vertex1(r->vertices2[3], dstX, dstY + height, s0, t1);
 122    }
 123
 124    return pipe_user_buffer_create(r->pipe->screen,
 125                                   r->vertices2,
 126                                   sizeof(r->vertices2));
 127 }
 128
 129 static struct pipe_buffer *
 130 setup_vertex_data_tex(struct xorg_renderer *r,
 131                       float x0, float y0, float x1, float y1,
 132                       float s0, float t0, float s1, float t1,
 133                       float z)
 134 {
 135    /* 1st vertex */
 136    setup_vertex1(r->vertices2[0], x0, y0, s0, t0);
 137    /* 2nd vertex */
 138    setup_vertex1(r->vertices2[1], x1, y0, s1, t0);
 139    /* 3rd vertex */
 140    setup_vertex1(r->vertices2[2], x1, y1, s1, t1);
 141    /* 4th vertex */
 142    setup_vertex1(r->vertices2[3], x0, y1, s0, t1);
 143
 144    return pipe_user_buffer_create(r->pipe->screen,
 145                                   r->vertices2,
 146                                   sizeof(r->vertices2));
 147 }
 148
 149 static INLINE void
 150 setup_vertex2(float vertex[3][4], float x, float y,
 151               float s0, float t0, float s1, float t1)
 152 {
 153    vertex[0][0] = x;
 154    vertex[0][1] = y;
 155    vertex[0][2] = 0.f; /*z*/
 156    vertex[0][3] = 1.f; /*w*/
 157
 158    vertex[1][0] = s0;  /*s*/
 159    vertex[1][1] = t0;  /*t*/
 160    vertex[1][2] = 0.f; /*r*/
 161    vertex[1][3] = 1.f; /*q*/
 162
 163    vertex[2][0] = s1;  /*s*/
 164    vertex[2][1] = t1;  /*t*/
 165    vertex[2][2] = 0.f; /*r*/
 166    vertex[2][3] = 1.f; /*q*/
 167 }
 168
 169 static struct pipe_buffer *
 170 setup_vertex_data2(struct xorg_renderer *r,
 171                    int srcX, int srcY, int maskX, int maskY,
 172                    int dstX, int dstY, int width, int height,
 173                    struct pipe_texture *src,
 174                    struct pipe_texture *mask,
 175                    float *src_matrix, float *mask_matrix)
 176 {
 177    float st0[4], st1[4];
 178    float pt0[2], pt1[2];
 179
 180    st0[0] = srcX / src->width[0];
 181    st0[1] = srcY / src->height[0];
 182    st0[2] = srcX + width / src->width[0];
 183    st0[3] = srcY + height / src->height[0];
 184
 185    st1[0] = maskX / mask->width[0];
 186    st1[1] = maskY / mask->height[0];
 187    st1[2] = maskX + width / mask->width[0];
 188    st1[3] = maskY + height / mask->height[0];
 189
 190    if (src_matrix || mask_matrix) {
 191       /* 1st vertex */
 192       map_point(src_matrix, st0[0], st0[1],
 193                 pt0 + 0, pt0 + 1);
 194       map_point(mask_matrix, st1[0], st1[1],
 195                 pt1 + 0, pt1 + 1);
 196       setup_vertex2(r->vertices3[0], dstX, dstY,
 197                     pt0[0], pt0[1], pt1[0], pt1[1]);
 198       /* 2nd vertex */
 199       map_point(src_matrix, st0[2], st0[1],
 200                 pt0 + 0, pt0 + 1);
 201       map_point(mask_matrix, st1[2], st1[1],
 202                 pt1 + 0, pt1 + 1);
 203       setup_vertex2(r->vertices3[1], dstX + width, dstY,
 204                     pt0[0], pt0[1], pt1[0], pt1[1]);
 205       /* 3rd vertex */
 206       map_point(src_matrix, st0[2], st0[3],
 207                 pt0 + 0, pt0 + 1);
 208       map_point(mask_matrix, st1[2], st1[3],
 209                 pt1 + 0, pt1 + 1);
 210       setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
 211                     pt0[0], pt0[1], pt1[0], pt1[1]);
 212       /* 4th vertex */
 213       map_point(src_matrix, st0[0], st0[3],
 214                 pt0 + 0, pt0 + 1);
 215       map_point(mask_matrix, st1[0], st1[3],
 216                 pt1 + 0, pt1 + 1);
 217       setup_vertex2(r->vertices3[3], dstX, dstY + height,
 218                     pt0[0], pt0[1], pt1[0], pt1[1]);
 219    } else {
 220       /* 1st vertex */
 221       setup_vertex2(r->vertices3[0], dstX, dstY,
 222                     st0[0], st0[1], st1[0], st1[1]);
 223       /* 2nd vertex */
 224       setup_vertex2(r->vertices3[1], dstX + width, dstY,
 225                     st0[2], st0[1], st1[2], st1[1]);
 226       /* 3rd vertex */
 227       setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
 228                     st0[2], st0[3], st1[2], st1[3]);
 229       /* 4th vertex */
 230       setup_vertex2(r->vertices3[3], dstX, dstY + height,
 231                     st0[0], st0[3], st1[0], st1[3]);
 232    }
 233
 234    return pipe_user_buffer_create(r->pipe->screen,
 235                                   r->vertices3,
 236                                   sizeof(r->vertices3));
 237 }
 238
 239
 240
 241 static void
 242 set_viewport(struct xorg_renderer *r, int width, int height,
 243              enum AxisOrientation orientation)
 244 {
 245    struct pipe_viewport_state viewport;
 246    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 247
 248    viewport.scale[0] =  width / 2.f;
 249    viewport.scale[1] =  height / y_scale;
 250    viewport.scale[2] =  1.0;
 251    viewport.scale[3] =  1.0;
 252    viewport.translate[0] = width / 2.f;
 253    viewport.translate[1] = height / 2.f;
 254    viewport.translate[2] = 0.0;
 255    viewport.translate[3] = 0.0;
 256
 257    cso_set_viewport(r->cso, &viewport);
 258 }
 259
 260
 261
 262 struct xorg_renderer * renderer_create(struct pipe_context *pipe)
 263 {
 264    struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
 265
 266    renderer->pipe = pipe;
 267    renderer->cso = cso_create_context(pipe);
 268    renderer->shaders = xorg_shaders_create(renderer);
 269
 270    renderer_init_state(renderer);
 271
 272    return renderer;
 273 }
 274
 275 void renderer_destroy(struct xorg_renderer *r)
 276 {
 277    struct pipe_constant_buffer *vsbuf = &r->vs_const_buffer;
 278    struct pipe_constant_buffer *fsbuf = &r->fs_const_buffer;
 279
 280    if (vsbuf && vsbuf->buffer)
 281       pipe_buffer_reference(&vsbuf->buffer, NULL);
 282
 283    if (fsbuf && fsbuf->buffer)
 284       pipe_buffer_reference(&fsbuf->buffer, NULL);
 285
 286    if (r->cso) {
 287       cso_release_all(r->cso);
 288       cso_destroy_context(r->cso);
 289    }
 290
 291    if (r->shaders) {
 292       xorg_shaders_destroy(r->shaders);
 293    }
 294 }
 295
 296 void renderer_bind_framebuffer(struct xorg_renderer *r,
 297                                struct exa_pixmap_priv *priv)
 298 {
 299    unsigned i;
 300    struct pipe_framebuffer_state state;
 301    struct pipe_surface *surface = xorg_gpu_surface(r->pipe->screen, priv);
 302    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 303
 304    state.width  = priv->tex->width[0];
 305    state.height = priv->tex->height[0];
 306
 307    state.nr_cbufs = 1;
 308    state.cbufs[0] = surface;
 309    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 310       state.cbufs[i] = 0;
 311
 312    /* currently we don't use depth/stencil */
 313    state.zsbuf = 0;
 314
 315    cso_set_framebuffer(r->cso, &state);
 316
 317    /* we do fire and forget for the framebuffer, this is the forget part */
 318    pipe_surface_reference(&surface, NULL);
 319 }
 320
 321 void renderer_bind_viewport(struct xorg_renderer *r,
 322                             struct exa_pixmap_priv *dst)
 323 {
 324    int width = dst->tex->width[0];
 325    int height = dst->tex->height[0];
 326
 327    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 328
 329    set_viewport(r, width, height, Y0_TOP);
 330 }
 331
 332 void renderer_bind_rasterizer(struct xorg_renderer *r)
 333 {
 334    struct pipe_rasterizer_state raster;
 335
 336    /* XXX: move to renderer_init_state? */
 337    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 338    raster.gl_rasterization_rules = 1;
 339    cso_set_rasterizer(r->cso, &raster);
 340 }
 341
 342 void renderer_set_constants(struct xorg_renderer *r,
 343                             int shader_type,
 344                             const float *params,
 345                             int param_bytes)
 346 {
 347    struct pipe_constant_buffer *cbuf =
 348       (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
 349       &r->fs_const_buffer;
 350
 351    pipe_buffer_reference(&cbuf->buffer, NULL);
 352    cbuf->buffer = pipe_buffer_create(r->pipe->screen, 16,
 353                                      PIPE_BUFFER_USAGE_CONSTANT,
 354                                      param_bytes);
 355
 356    if (cbuf->buffer) {
 357       pipe_buffer_write(r->pipe->screen, cbuf->buffer,
 358                         0, param_bytes, params);
 359    }
 360    r->pipe->set_constant_buffer(r->pipe, shader_type, 0, cbuf);
 361 }
 362
 363 static void
 364 setup_vs_constant_buffer(struct xorg_renderer *r,
 365                          int width, int height)
 366 {
 367    const int param_bytes = 8 * sizeof(float);
 368    float vs_consts[8] = {
 369       2.f/width, 2.f/height, 1, 1,
 370       -1, -1, 0, 0
 371    };
 372    renderer_set_constants(r, PIPE_SHADER_VERTEX,
 373                           vs_consts, param_bytes);
 374 }
 375
 376 static void
 377 setup_fs_constant_buffer(struct xorg_renderer *r)
 378 {
 379    const int param_bytes = 4 * sizeof(float);
 380    const float fs_consts[8] = {
 381       0, 0, 0, 1,
 382    };
 383    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
 384                           fs_consts, param_bytes);
 385 }
 386
 387 static INLINE void shift_rectx(float coords[4],
 388                                const float *bounds,
 389                                const float shift)
 390 {
 391    coords[0] += shift;
 392    coords[2] -= shift;
 393    if (bounds) {
 394       coords[2] = MIN2(coords[2], bounds[2]);
 395       /* bound x/y + width/height */
 396       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 397          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 398       }
 399    }
 400 }
 401
 402 static INLINE void shift_recty(float coords[4],
 403                                const float *bounds,
 404                                const float shift)
 405 {
 406    coords[1] += shift;
 407    coords[3] -= shift;
 408    if (bounds) {
 409       coords[3] = MIN2(coords[3], bounds[3]);
 410       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 411          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 412       }
 413    }
 414 }
 415
 416 static INLINE void bound_rect(float coords[4],
 417                               const float bounds[4],
 418                               float shift[4])
 419 {
 420    /* if outside the bounds */
 421    if (coords[0] > (bounds[0] + bounds[2]) ||
 422        coords[1] > (bounds[1] + bounds[3]) ||
 423        (coords[0] + coords[2]) < bounds[0] ||
 424        (coords[1] + coords[3]) < bounds[1]) {
 425       coords[0] = 0.f;
 426       coords[1] = 0.f;
 427       coords[2] = 0.f;
 428       coords[3] = 0.f;
 429       shift[0] = 0.f;
 430       shift[1] = 0.f;
 431       return;
 432    }
 433
 434    /* bound x */
 435    if (coords[0] < bounds[0]) {
 436       shift[0] = bounds[0] - coords[0];
 437       coords[2] -= shift[0];
 438       coords[0] = bounds[0];
 439    } else
 440       shift[0] = 0.f;
 441
 442    /* bound y */
 443    if (coords[1] < bounds[1]) {
 444       shift[1] = bounds[1] - coords[1];
 445       coords[3] -= shift[1];
 446       coords[1] = bounds[1];
 447    } else
 448       shift[1] = 0.f;
 449
 450    shift[2] = bounds[2] - coords[2];
 451    shift[3] = bounds[3] - coords[3];
 452    /* bound width/height */
 453    coords[2] = MIN2(coords[2], bounds[2]);
 454    coords[3] = MIN2(coords[3], bounds[3]);
 455
 456    /* bound x/y + width/height */
 457    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 458       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 459    }
 460    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 461       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 462    }
 463
 464    /* if outside the bounds */
 465    if ((coords[0] + coords[2]) < bounds[0] ||
 466        (coords[1] + coords[3]) < bounds[1]) {
 467       coords[0] = 0.f;
 468       coords[1] = 0.f;
 469       coords[2] = 0.f;
 470       coords[3] = 0.f;
 471       return;
 472    }
 473 }
 474
 475 static INLINE void sync_size(float *src_loc, float *dst_loc)
 476 {
 477    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 478    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 479    dst_loc[2] = src_loc[2];
 480    dst_loc[3] = src_loc[3];
 481 }
 482
 483 static void renderer_copy_texture(struct xorg_renderer *r,
 484                                   struct pipe_texture *src,
 485                                   float sx1, float sy1,
 486                                   float sx2, float sy2,
 487                                   struct pipe_texture *dst,
 488                                   float dx1, float dy1,
 489                                   float dx2, float dy2)
 490 {
 491    struct pipe_context *pipe = r->pipe;
 492    struct pipe_screen *screen = pipe->screen;
 493    struct pipe_buffer *buf;
 494    struct pipe_surface *dst_surf = screen->get_tex_surface(
 495       screen, dst, 0, 0, 0,
 496       PIPE_BUFFER_USAGE_GPU_WRITE);
 497    struct pipe_framebuffer_state fb;
 498    float s0, t0, s1, t1;
 499    struct xorg_shader shader;
 500
 501    assert(src->width[0] != 0);
 502    assert(src->height[0] != 0);
 503    assert(dst->width[0] != 0);
 504    assert(dst->height[0] != 0);
 505
 506 #if 1
 507    s0 = sx1 / src->width[0];
 508    s1 = sx2 / src->width[0];
 509    t0 = sy1 / src->height[0];
 510    t1 = sy2 / src->height[0];
 511 #else
 512    s0 = 0;
 513    s1 = 1;
 514    t0 = 0;
 515    t1 = 1;
 516 #endif
 517
 518 #if 0
 519    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 520                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 521                 s0, t0, s1, t1);
 522 #endif
 523
 524    assert(screen->is_format_supported(screen, dst_surf->format,
 525                                       PIPE_TEXTURE_2D,
 526                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 527                                       0));
 528
 529    /* save state (restored below) */
 530    cso_save_blend(r->cso);
 531    cso_save_samplers(r->cso);
 532    cso_save_sampler_textures(r->cso);
 533    cso_save_framebuffer(r->cso);
 534    cso_save_fragment_shader(r->cso);
 535    cso_save_vertex_shader(r->cso);
 536
 537    cso_save_viewport(r->cso);
 538
 539
 540    /* set misc state we care about */
 541    {
 542       struct pipe_blend_state blend;
 543       memset(&blend, 0, sizeof(blend));
 544       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 545       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 546       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 547       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 548       blend.colormask = PIPE_MASK_RGBA;
 549       cso_set_blend(r->cso, &blend);
 550    }
 551
 552    /* sampler */
 553    {
 554       struct pipe_sampler_state sampler;
 555       memset(&sampler, 0, sizeof(sampler));
 556       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 557       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 558       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 559       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 560       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 561       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 562       sampler.normalized_coords = 1;
 563       cso_single_sampler(r->cso, 0, &sampler);
 564       cso_single_sampler_done(r->cso);
 565    }
 566
 567    set_viewport(r, dst_surf->width, dst_surf->height, Y0_TOP);
 568
 569    /* texture */
 570    cso_set_sampler_textures(r->cso, 1, &src);
 571
 572    renderer_bind_rasterizer(r);
 573
 574    /* shaders */
 575    shader = xorg_shaders_get(r->shaders,
 576                              VS_COMPOSITE,
 577                              FS_COMPOSITE);
 578    cso_set_vertex_shader_handle(r->cso, shader.vs);
 579    cso_set_fragment_shader_handle(r->cso, shader.fs);
 580
 581    /* drawing dest */
 582    memset(&fb, 0, sizeof(fb));
 583    fb.width = dst_surf->width;
 584    fb.height = dst_surf->height;
 585    fb.nr_cbufs = 1;
 586    fb.cbufs[0] = dst_surf;
 587    {
 588       int i;
 589       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 590          fb.cbufs[i] = 0;
 591    }
 592    cso_set_framebuffer(r->cso, &fb);
 593    setup_vs_constant_buffer(r, fb.width, fb.height);
 594    setup_fs_constant_buffer(r);
 595
 596    /* draw quad */
 597    buf = setup_vertex_data_tex(r,
 598                                dx1, dy1,
 599                                dx2, dy2,
 600                                s0, t0, s1, t1,
 601                                0.0f);
 602
 603    if (buf) {
 604       util_draw_vertex_buffer(r->pipe, buf, 0,
 605                               PIPE_PRIM_TRIANGLE_FAN,
 606                               4,  /* verts */
 607                               2); /* attribs/vert */
 608
 609       pipe_buffer_reference(&buf, NULL);
 610    }
 611
 612    /* restore state we changed */
 613    cso_restore_blend(r->cso);
 614    cso_restore_samplers(r->cso);
 615    cso_restore_sampler_textures(r->cso);
 616    cso_restore_framebuffer(r->cso);
 617    cso_restore_vertex_shader(r->cso);
 618    cso_restore_fragment_shader(r->cso);
 619    cso_restore_viewport(r->cso);
 620
 621    pipe_surface_reference(&dst_surf, NULL);
 622 }
 623
 624 static struct pipe_texture *
 625 create_sampler_texture(struct xorg_renderer *r,
 626                        struct pipe_texture *src)
 627 {
 628    enum pipe_format format;
 629    struct pipe_context *pipe = r->pipe;
 630    struct pipe_screen *screen = pipe->screen;
 631    struct pipe_texture *pt;
 632    struct pipe_texture templ;
 633
 634    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 635
 636    /* the coming in texture should already have that invariance */
 637    debug_assert(screen->is_format_supported(screen, src->format,
 638                                             PIPE_TEXTURE_2D,
 639                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 640
 641    format = src->format;
 642
 643    memset(&templ, 0, sizeof(templ));
 644    templ.target = PIPE_TEXTURE_2D;
 645    templ.format = format;
 646    templ.last_level = 0;
 647    templ.width[0] = src->width[0];
 648    templ.height[0] = src->height[0];
 649    templ.depth[0] = 1;
 650    pf_get_block(format, &templ.block);
 651    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 652
 653    pt = screen->texture_create(screen, &templ);
 654
 655    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 656
 657    if (!pt)
 658       return NULL;
 659
 660    {
 661       /* copy source framebuffer surface into texture */
 662       struct pipe_surface *ps_read = screen->get_tex_surface(
 663          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 664       struct pipe_surface *ps_tex = screen->get_tex_surface(
 665          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 666       if (pipe->surface_copy) {
 667          pipe->surface_copy(pipe,
 668                 ps_tex, /* dest */
 669                 0, 0, /* destx/y */
 670                 ps_read,
 671                 0, 0, src->width[0], src->height[0]);
 672       } else {
 673           util_surface_copy(pipe, FALSE,
 674                 ps_tex, /* dest */
 675                 0, 0, /* destx/y */
 676                 ps_read,
 677                 0, 0, src->width[0], src->height[0]);
 678       }
 679       pipe_surface_reference(&ps_read, NULL);
 680       pipe_surface_reference(&ps_tex, NULL);
 681    }
 682
 683    return pt;
 684 }
 685
 686
 687 void renderer_copy_pixmap(struct xorg_renderer *r,
 688                           struct exa_pixmap_priv *dst_priv, int dx, int dy,
 689                           struct exa_pixmap_priv *src_priv, int sx, int sy,
 690                           int width, int height)
 691 {
 692    float dst_loc[4], src_loc[4];
 693    float dst_bounds[4], src_bounds[4];
 694    float src_shift[4], dst_shift[4], shift[4];
 695    struct pipe_texture *dst = dst_priv->tex;
 696    struct pipe_texture *src = src_priv->tex;
 697
 698    if (r->pipe->is_texture_referenced(r->pipe, src, 0, 0) &
 699        PIPE_REFERENCED_FOR_WRITE)
 700       r->pipe->flush(r->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 701
 702    dst_loc[0] = dx;
 703    dst_loc[1] = dy;
 704    dst_loc[2] = width;
 705    dst_loc[3] = height;
 706    dst_bounds[0] = 0.f;
 707    dst_bounds[1] = 0.f;
 708    dst_bounds[2] = dst->width[0];
 709    dst_bounds[3] = dst->height[0];
 710
 711    src_loc[0] = sx;
 712    src_loc[1] = sy;
 713    src_loc[2] = width;
 714    src_loc[3] = height;
 715    src_bounds[0] = 0.f;
 716    src_bounds[1] = 0.f;
 717    src_bounds[2] = src->width[0];
 718    src_bounds[3] = src->height[0];
 719
 720    bound_rect(src_loc, src_bounds, src_shift);
 721    bound_rect(dst_loc, dst_bounds, dst_shift);
 722    shift[0] = src_shift[0] - dst_shift[0];
 723    shift[1] = src_shift[1] - dst_shift[1];
 724
 725    if (shift[0] < 0)
 726       shift_rectx(src_loc, src_bounds, -shift[0]);
 727    else
 728       shift_rectx(dst_loc, dst_bounds, shift[0]);
 729
 730    if (shift[1] < 0)
 731       shift_recty(src_loc, src_bounds, -shift[1]);
 732    else
 733       shift_recty(dst_loc, dst_bounds, shift[1]);
 734
 735    sync_size(src_loc, dst_loc);
 736
 737    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
 738        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
 739       struct pipe_texture *temp_src = src;
 740
 741       if (src == dst)
 742          temp_src = create_sampler_texture(r, src);
 743
 744       renderer_copy_texture(r,
 745                             temp_src,
 746                             src_loc[0],
 747                             src_loc[1],
 748                             src_loc[0] + src_loc[2],
 749                             src_loc[1] + src_loc[3],
 750                             dst,
 751                             dst_loc[0],
 752                             dst_loc[1],
 753                             dst_loc[0] + dst_loc[2],
 754                             dst_loc[1] + dst_loc[3]);
 755
 756       if (src == dst)
 757          pipe_texture_reference(&temp_src, NULL);
 758    }
 759 }
 760
 761 void renderer_draw_solid_rect(struct xorg_renderer *r,
 762                               int x0, int y0,
 763                               int x1, int y1,
 764                               float *color)
 765 {
 766    struct pipe_context *pipe = r->pipe;
 767    struct pipe_buffer *buf = 0;
 768
 769    /*
 770    debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
 771    x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
 772    /* 1st vertex */
 773    setup_vertex0(r->vertices2[0], x0, y0, color);
 774    /* 2nd vertex */
 775    setup_vertex0(r->vertices2[1], x1, y0, color);
 776    /* 3rd vertex */
 777    setup_vertex0(r->vertices2[2], x1, y1, color);
 778    /* 4th vertex */
 779    setup_vertex0(r->vertices2[3], x0, y1, color);
 780
 781    buf = pipe_user_buffer_create(pipe->screen,
 782                                  r->vertices2,
 783                                  sizeof(r->vertices2));
 784
 785
 786    if (buf) {
 787       util_draw_vertex_buffer(pipe, buf, 0,
 788                               PIPE_PRIM_TRIANGLE_FAN,
 789                               4,  /* verts */
 790                               2); /* attribs/vert */
 791
 792       pipe_buffer_reference(&buf, NULL);
 793    }
 794 }
 795
 796 void renderer_draw_textures(struct xorg_renderer *r,
 797                             int *pos,
 798                             int width, int height,
 799                             struct pipe_texture **textures,
 800                             int num_textures,
 801                             float *src_matrix, float *mask_matrix)
 802 {
 803    struct pipe_context *pipe = r->pipe;
 804    struct pipe_buffer *buf = 0;
 805
 806    switch(num_textures) {
 807    case 1:
 808       buf = setup_vertex_data1(r,
 809                                pos[0], pos[1], /* src */
 810                                pos[4], pos[5], /* dst */
 811                                width, height,
 812                                textures[0], src_matrix);
 813       break;
 814    case 2:
 815       buf = setup_vertex_data2(r,
 816                                pos[0], pos[1], /* src */
 817                                pos[2], pos[3], /* mask */
 818                                pos[4], pos[5], /* dst */
 819                                width, height,
 820                                textures[0], textures[1],
 821                                src_matrix, mask_matrix);
 822       break;
 823    default:
 824       debug_assert(!"Unsupported number of textures");
 825       break;
 826    }
 827
 828    if (buf) {
 829       int num_attribs = 1; /*pos*/
 830       num_attribs += num_textures;
 831
 832       util_draw_vertex_buffer(pipe, buf, 0,
 833                               PIPE_PRIM_TRIANGLE_FAN,
 834                               4,  /* verts */
 835                               num_attribs); /* attribs/vert */
 836
 837       pipe_buffer_reference(&buf, NULL);
 838    }
 839 }