src/gallium/state_trackers/xorg/xorg_composite.c

   1 #include "xorg_composite.h"
   2
   3 #include "xorg_exa_tgsi.h"
   4
   5 #include "cso_cache/cso_context.h"
   6 #include "util/u_draw_quad.h"
   7 #include "util/u_math.h"
   8
   9 #include "pipe/p_inlines.h"
  10
  11 struct xorg_composite_blend {
  12    int op:8;
  13
  14    unsigned rgb_src_factor:5;    /**< PIPE_BLENDFACTOR_x */
  15    unsigned alpha_src_factor:5;  /**< PIPE_BLENDFACTOR_x */
  16
  17    unsigned rgb_dst_factor:5;    /**< PIPE_BLENDFACTOR_x */
  18    unsigned alpha_dst_factor:5;  /**< PIPE_BLENDFACTOR_x */
  19 };
  20
  21 #define BLEND_OP_OVER 3
  22 static const struct xorg_composite_blend xorg_blends[] = {
  23    { PictOpClear,
  24      PIPE_BLENDFACTOR_CONST_COLOR, PIPE_BLENDFACTOR_CONST_ALPHA,
  25      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
  26
  27    { PictOpSrc,
  28      PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE,
  29      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
  30
  31    { PictOpDst,
  32      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO,
  33      PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE },
  34
  35    { PictOpOver,
  36      PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
  37      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
  38
  39    { PictOpOverReverse,
  40      PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
  41      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
  42 };
  43
  44
  45 static INLINE void
  46 pixel_to_float4(Pixel pixel, float *color)
  47 {
  48    CARD32           r, g, b, a;
  49
  50    a = (pixel >> 24) & 0xff;
  51    r = (pixel >> 16) & 0xff;
  52    g = (pixel >>  8) & 0xff;
  53    b = (pixel >>  0) & 0xff;
  54    color[0] = ((float)r) / 255.;
  55    color[1] = ((float)g) / 255.;
  56    color[2] = ((float)b) / 255.;
  57    color[3] = ((float)a) / 255.;
  58 }
  59
  60 struct acceleration_info {
  61    int op : 16;
  62    int with_mask : 1;
  63    int component_alpha : 1;
  64 };
  65 static const struct acceleration_info accelerated_ops[] = {
  66    {PictOpClear,       1, 0},
  67    {PictOpSrc,         1, 0},
  68    {PictOpDst,         1, 0},
  69    {PictOpOver,        1, 0},
  70    {PictOpOverReverse, 1, 0},
  71    {PictOpIn,          1, 0},
  72    {PictOpInReverse,   1, 0},
  73    {PictOpOut,         1, 0},
  74    {PictOpOutReverse,  1, 0},
  75    {PictOpAtop,        1, 0},
  76    {PictOpAtopReverse, 1, 0},
  77    {PictOpXor,         1, 0},
  78    {PictOpAdd,         1, 0},
  79    {PictOpSaturate,    1, 0},
  80 };
  81
  82 static struct xorg_composite_blend
  83 blend_for_op(int op)
  84 {
  85    const int num_blends =
  86       sizeof(xorg_blends)/sizeof(struct xorg_composite_blend);
  87    int i;
  88
  89    for (i = 0; i < num_blends; ++i) {
  90       if (xorg_blends[i].op == op)
  91          return xorg_blends[i];
  92    }
  93    return xorg_blends[BLEND_OP_OVER];
  94 }
  95
  96 static INLINE int
  97 render_repeat_to_gallium(int mode)
  98 {
  99    switch(mode) {
 100    case RepeatNone:
 101       return PIPE_TEX_WRAP_CLAMP;
 102    case RepeatNormal:
 103       return PIPE_TEX_WRAP_REPEAT;
 104    case RepeatReflect:
 105       return PIPE_TEX_WRAP_MIRROR_REPEAT;
 106    case RepeatPad:
 107       return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 108    default:
 109       debug_printf("Unsupported repeat mode\n");
 110    }
 111    return PIPE_TEX_WRAP_REPEAT;
 112 }
 113
 114
 115 static INLINE void
 116 setup_vertex0(float vertex[2][4], float x, float y,
 117               float color[4])
 118 {
 119    vertex[0][0] = x;
 120    vertex[0][1] = y;
 121    vertex[0][2] = 0.f; /*z*/
 122    vertex[0][3] = 1.f; /*w*/
 123
 124    vertex[1][0] = color[0]; /*r*/
 125    vertex[1][1] = color[1]; /*g*/
 126    vertex[1][2] = color[2]; /*b*/
 127    vertex[1][3] = color[3]; /*a*/
 128 }
 129
 130 static struct pipe_buffer *
 131 setup_vertex_data0(struct exa_context *ctx,
 132                    int srcX, int srcY, int maskX, int maskY,
 133                    int dstX, int dstY, int width, int height)
 134 {
 135    /* 1st vertex */
 136    setup_vertex0(ctx->vertices2[0], dstX, dstY,
 137                  ctx->solid_color);
 138    /* 2nd vertex */
 139    setup_vertex0(ctx->vertices2[1], dstX + width, dstY,
 140                  ctx->solid_color);
 141    /* 3rd vertex */
 142    setup_vertex0(ctx->vertices2[2], dstX + width, dstY + height,
 143                  ctx->solid_color);
 144    /* 4th vertex */
 145    setup_vertex0(ctx->vertices2[3], dstX, dstY + height,
 146                  ctx->solid_color);
 147
 148    return pipe_user_buffer_create(ctx->pipe->screen,
 149                                   ctx->vertices2,
 150                                   sizeof(ctx->vertices2));
 151 }
 152
 153 static INLINE void
 154 setup_vertex1(float vertex[2][4], float x, float y, float s, float t)
 155 {
 156    vertex[0][0] = x;
 157    vertex[0][1] = y;
 158    vertex[0][2] = 0.f; /*z*/
 159    vertex[0][3] = 1.f; /*w*/
 160
 161    vertex[1][0] = s;   /*s*/
 162    vertex[1][1] = t;   /*t*/
 163    vertex[1][2] = 0.f; /*r*/
 164    vertex[1][3] = 1.f; /*q*/
 165 }
 166
 167 static struct pipe_buffer *
 168 setup_vertex_data1(struct exa_context *ctx,
 169                    int srcX, int srcY, int maskX, int maskY,
 170                    int dstX, int dstY, int width, int height)
 171 {
 172    float s0, t0, s1, t1;
 173    struct pipe_texture *src = ctx->bound_textures[0];
 174
 175    s0 = srcX / src->width[0];
 176    s1 = srcX + width / src->width[0];
 177    t0 = srcY / src->height[0];
 178    t1 = srcY + height / src->height[0];
 179
 180    /* 1st vertex */
 181    setup_vertex1(ctx->vertices2[0], dstX, dstY,
 182                  s0, t0);
 183    /* 2nd vertex */
 184    setup_vertex1(ctx->vertices2[1], dstX + width, dstY,
 185                  s1, t0);
 186    /* 3rd vertex */
 187    setup_vertex1(ctx->vertices2[2], dstX + width, dstY + height,
 188                  s1, t1);
 189    /* 4th vertex */
 190    setup_vertex1(ctx->vertices2[3], dstX, dstY + height,
 191                  s0, t1);
 192
 193    return pipe_user_buffer_create(ctx->pipe->screen,
 194                                   ctx->vertices2,
 195                                   sizeof(ctx->vertices2));
 196 }
 197
 198 static struct pipe_buffer *
 199 setup_vertex_data_tex(struct exa_context *ctx,
 200                       float x0, float y0, float x1, float y1,
 201                       float s0, float t0, float s1, float t1,
 202                       float z)
 203 {
 204    /* 1st vertex */
 205    setup_vertex1(ctx->vertices2[0], x0, y0,
 206                  s0, t0);
 207    /* 2nd vertex */
 208    setup_vertex1(ctx->vertices2[1], x1, y0,
 209                  s1, t0);
 210    /* 3rd vertex */
 211    setup_vertex1(ctx->vertices2[2], x1, y1,
 212                  s1, t1);
 213    /* 4th vertex */
 214    setup_vertex1(ctx->vertices2[3], x0, y1,
 215                  s0, t1);
 216
 217    return pipe_user_buffer_create(ctx->pipe->screen,
 218                                   ctx->vertices2,
 219                                   sizeof(ctx->vertices2));
 220 }
 221
 222
 223
 224 static INLINE void
 225 setup_vertex2(float vertex[3][4], float x, float y,
 226               float s0, float t0, float s1, float t1)
 227 {
 228    vertex[0][0] = x;
 229    vertex[0][1] = y;
 230    vertex[0][2] = 0.f; /*z*/
 231    vertex[0][3] = 1.f; /*w*/
 232
 233    vertex[1][0] = s0;  /*s*/
 234    vertex[1][1] = t0;  /*t*/
 235    vertex[1][2] = 0.f; /*r*/
 236    vertex[1][3] = 1.f; /*q*/
 237
 238    vertex[2][0] = s1;  /*s*/
 239    vertex[2][1] = t1;  /*t*/
 240    vertex[2][2] = 0.f; /*r*/
 241    vertex[2][3] = 1.f; /*q*/
 242 }
 243
 244 static struct pipe_buffer *
 245 setup_vertex_data2(struct exa_context *ctx,
 246                    int srcX, int srcY, int maskX, int maskY,
 247                    int dstX, int dstY, int width, int height)
 248 {
 249    float st0[4], st1[4];
 250    struct pipe_texture *src = ctx->bound_textures[0];
 251    struct pipe_texture *mask = ctx->bound_textures[0];
 252
 253    st0[0] = srcX / src->width[0];
 254    st0[1] = srcY / src->height[0];
 255    st0[2] = srcX + width / src->width[0];
 256    st0[3] = srcY + height / src->height[0];
 257
 258    st1[0] = maskX / mask->width[0];
 259    st1[1] = maskY / mask->height[0];
 260    st1[2] = maskX + width / mask->width[0];
 261    st1[3] = maskY + height / mask->height[0];
 262
 263    /* 1st vertex */
 264    setup_vertex2(ctx->vertices3[0], dstX, dstY,
 265                  st0[0], st0[1], st1[0], st1[1]);
 266    /* 2nd vertex */
 267    setup_vertex2(ctx->vertices3[1], dstX + width, dstY,
 268                  st0[2], st0[1], st1[2], st1[1]);
 269    /* 3rd vertex */
 270    setup_vertex2(ctx->vertices3[2], dstX + width, dstY + height,
 271                  st0[2], st0[3], st1[2], st1[3]);
 272    /* 4th vertex */
 273    setup_vertex2(ctx->vertices3[3], dstX, dstY + height,
 274                  st0[0], st0[3], st1[0], st1[3]);
 275
 276    return pipe_user_buffer_create(ctx->pipe->screen,
 277                                   ctx->vertices3,
 278                                   sizeof(ctx->vertices3));
 279 }
 280
 281 boolean xorg_composite_accelerated(int op,
 282                                    PicturePtr pSrcPicture,
 283                                    PicturePtr pMaskPicture,
 284                                    PicturePtr pDstPicture)
 285 {
 286    unsigned i;
 287    unsigned accel_ops_count =
 288       sizeof(accelerated_ops)/sizeof(struct acceleration_info);
 289
 290    if (pSrcPicture->pSourcePict) {
 291       /* Gradients not yet supported */
 292       if (pSrcPicture->pSourcePict->type != SourcePictTypeSolidFill)
 293          return FALSE;
 294
 295       /* Solid source with mask not yet handled properly */
 296       if (pMaskPicture)
 297          return FALSE;
 298    }
 299
 300    for (i = 0; i < accel_ops_count; ++i) {
 301       if (op == accelerated_ops[i].op) {
 302          /* Check for unsupported component alpha */
 303          if ((pSrcPicture->componentAlpha &&
 304               !accelerated_ops[i].component_alpha) ||
 305              (pMaskPicture &&
 306               (!accelerated_ops[i].with_mask ||
 307                (pMaskPicture->componentAlpha &&
 308                 !accelerated_ops[i].component_alpha))))
 309             return FALSE;
 310          return TRUE;
 311       }
 312    }
 313    return FALSE;
 314 }
 315
 316 static void
 317 bind_clip_state(struct exa_context *exa)
 318 {
 319 }
 320
 321 static void
 322 bind_framebuffer_state(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 323 {
 324    unsigned i;
 325    struct pipe_framebuffer_state state;
 326    struct pipe_surface *surface = exa_gpu_surface(exa, pDst);
 327    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 328
 329    state.width  = pDst->tex->width[0];
 330    state.height = pDst->tex->height[0];
 331
 332    state.nr_cbufs = 1;
 333    state.cbufs[0] = surface;
 334    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 335       state.cbufs[i] = 0;
 336
 337    /* currently we don't use depth/stencil */
 338    state.zsbuf = 0;
 339
 340    cso_set_framebuffer(exa->cso, &state);
 341
 342    /* we do fire and forget for the framebuffer, this is the forget part */
 343    pipe_surface_reference(&surface, NULL);
 344 }
 345
 346 enum AxisOrientation {
 347    Y0_BOTTOM,
 348    Y0_TOP
 349 };
 350
 351 static void
 352 set_viewport(struct exa_context *exa, int width, int height,
 353              enum AxisOrientation orientation)
 354 {
 355    struct pipe_viewport_state viewport;
 356    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 357
 358    viewport.scale[0] =  width / 2.f;
 359    viewport.scale[1] =  height / y_scale;
 360    viewport.scale[2] =  1.0;
 361    viewport.scale[3] =  1.0;
 362    viewport.translate[0] = width / 2.f;
 363    viewport.translate[1] = height / 2.f;
 364    viewport.translate[2] = 0.0;
 365    viewport.translate[3] = 0.0;
 366
 367    cso_set_viewport(exa->cso, &viewport);
 368 }
 369
 370 static void
 371 bind_viewport_state(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 372 {
 373    int width = pDst->tex->width[0];
 374    int height = pDst->tex->height[0];
 375
 376    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 377
 378    set_viewport(exa, width, height, Y0_TOP);
 379 }
 380
 381 static void
 382 bind_blend_state(struct exa_context *exa, int op,
 383                  PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 384 {
 385    struct xorg_composite_blend blend_opt;
 386    struct pipe_blend_state blend;
 387
 388    blend_opt = blend_for_op(op);
 389
 390    memset(&blend, 0, sizeof(struct pipe_blend_state));
 391    blend.blend_enable = 1;
 392    blend.colormask |= PIPE_MASK_R;
 393    blend.colormask |= PIPE_MASK_G;
 394    blend.colormask |= PIPE_MASK_B;
 395    blend.colormask |= PIPE_MASK_A;
 396
 397    blend.rgb_src_factor   = blend_opt.rgb_src_factor;
 398    blend.alpha_src_factor = blend_opt.alpha_src_factor;
 399    blend.rgb_dst_factor   = blend_opt.rgb_dst_factor;
 400    blend.alpha_dst_factor = blend_opt.alpha_dst_factor;
 401
 402    cso_set_blend(exa->cso, &blend);
 403 }
 404
 405 static void
 406 bind_rasterizer_state(struct exa_context *exa)
 407 {
 408    struct pipe_rasterizer_state raster;
 409    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 410    raster.gl_rasterization_rules = 1;
 411    cso_set_rasterizer(exa->cso, &raster);
 412 }
 413
 414 static void
 415 bind_shaders(struct exa_context *exa, int op,
 416              PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 417 {
 418    unsigned vs_traits = 0, fs_traits = 0;
 419    struct xorg_shader shader;
 420
 421    exa->has_solid_color = FALSE;
 422
 423    if (pSrcPicture) {
 424       if (pSrcPicture->pSourcePict) {
 425          if (pSrcPicture->pSourcePict->type == SourcePictTypeSolidFill) {
 426             fs_traits |= FS_SOLID_FILL;
 427             vs_traits |= VS_SOLID_FILL;
 428             debug_assert(pSrcPicture->format == PICT_a8r8g8b8);
 429             pixel_to_float4(pSrcPicture->pSourcePict->solidFill.color,
 430                             exa->solid_color);
 431             exa->has_solid_color = TRUE;
 432          } else {
 433             debug_assert("!gradients not supported");
 434          }
 435       } else {
 436          fs_traits |= FS_COMPOSITE;
 437          vs_traits |= VS_COMPOSITE;
 438       }
 439    }
 440
 441    if (pMaskPicture) {
 442       vs_traits |= VS_MASK;
 443       fs_traits |= FS_MASK;
 444    }
 445
 446    shader = xorg_shaders_get(exa->shaders, vs_traits, fs_traits);
 447    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 448    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 449 }
 450
 451
 452 static void
 453 bind_samplers(struct exa_context *exa, int op,
 454               PicturePtr pSrcPicture, PicturePtr pMaskPicture,
 455               PicturePtr pDstPicture,
 456               struct exa_pixmap_priv *pSrc,
 457               struct exa_pixmap_priv *pMask,
 458               struct exa_pixmap_priv *pDst)
 459 {
 460    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 461    struct pipe_sampler_state src_sampler, mask_sampler;
 462
 463    exa->num_bound_samplers = 0;
 464
 465    memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 466    memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 467
 468    if ((pSrc && exa->pipe->is_texture_referenced(exa->pipe, pSrc->tex, 0, 0) &
 469         PIPE_REFERENCED_FOR_WRITE) ||
 470        (pMask && exa->pipe->is_texture_referenced(exa->pipe, pMask->tex, 0, 0) &
 471         PIPE_REFERENCED_FOR_WRITE))
 472       exa->pipe->flush(exa->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 473
 474    if (pSrcPicture && pSrc) {
 475       unsigned src_wrap = render_repeat_to_gallium(
 476          pSrcPicture->repeatType);
 477       src_sampler.wrap_s = src_wrap;
 478       src_sampler.wrap_t = src_wrap;
 479       src_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 480       src_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 481       src_sampler.normalized_coords = 1;
 482       samplers[0] = &src_sampler;
 483       exa->bound_textures[0] = pSrc->tex;
 484       ++exa->num_bound_samplers;
 485    }
 486
 487    if (pMaskPicture && pMask) {
 488       unsigned mask_wrap = render_repeat_to_gallium(
 489          pMaskPicture->repeatType);
 490       mask_sampler.wrap_s = mask_wrap;
 491       mask_sampler.wrap_t = mask_wrap;
 492       mask_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 493       mask_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 494       mask_sampler.normalized_coords = 1;
 495       samplers[1] = &mask_sampler;
 496       exa->bound_textures[1] = pMask->tex;
 497       ++exa->num_bound_samplers;
 498    }
 499
 500    cso_set_samplers(exa->cso, exa->num_bound_samplers,
 501                     (const struct pipe_sampler_state **)samplers);
 502    cso_set_sampler_textures(exa->cso, exa->num_bound_samplers,
 503                             exa->bound_textures);
 504 }
 505
 506 static void
 507 setup_vs_constant_buffer(struct exa_context *exa,
 508                          int width, int height)
 509 {
 510    const int param_bytes = 8 * sizeof(float);
 511    float vs_consts[8] = {
 512       2.f/width, 2.f/height, 1, 1,
 513       -1, -1, 0, 0
 514    };
 515    struct pipe_constant_buffer *cbuf = &exa->vs_const_buffer;
 516
 517    pipe_buffer_reference(&cbuf->buffer, NULL);
 518    cbuf->buffer = pipe_buffer_create(exa->pipe->screen, 16,
 519                                      PIPE_BUFFER_USAGE_CONSTANT,
 520                                      param_bytes);
 521
 522    if (cbuf->buffer) {
 523       pipe_buffer_write(exa->pipe->screen, cbuf->buffer,
 524                         0, param_bytes, vs_consts);
 525    }
 526    exa->pipe->set_constant_buffer(exa->pipe, PIPE_SHADER_VERTEX, 0, cbuf);
 527 }
 528
 529
 530 static void
 531 setup_fs_constant_buffer(struct exa_context *exa)
 532 {
 533    const int param_bytes = 4 * sizeof(float);
 534    float fs_consts[8] = {
 535       0, 0, 0, 1,
 536    };
 537    struct pipe_constant_buffer *cbuf = &exa->fs_const_buffer;
 538
 539    pipe_buffer_reference(&cbuf->buffer, NULL);
 540    cbuf->buffer = pipe_buffer_create(exa->pipe->screen, 16,
 541                                      PIPE_BUFFER_USAGE_CONSTANT,
 542                                      param_bytes);
 543
 544    if (cbuf->buffer) {
 545       pipe_buffer_write(exa->pipe->screen, cbuf->buffer,
 546                         0, param_bytes, fs_consts);
 547    }
 548    exa->pipe->set_constant_buffer(exa->pipe, PIPE_SHADER_FRAGMENT, 0, cbuf);
 549 }
 550
 551 static void
 552 setup_constant_buffers(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 553 {
 554    int width = pDst->tex->width[0];
 555    int height = pDst->tex->height[0];
 556
 557    setup_vs_constant_buffer(exa, width, height);
 558    setup_fs_constant_buffer(exa);
 559 }
 560
 561 boolean xorg_composite_bind_state(struct exa_context *exa,
 562                                   int op,
 563                                   PicturePtr pSrcPicture,
 564                                   PicturePtr pMaskPicture,
 565                                   PicturePtr pDstPicture,
 566                                   struct exa_pixmap_priv *pSrc,
 567                                   struct exa_pixmap_priv *pMask,
 568                                   struct exa_pixmap_priv *pDst)
 569 {
 570    bind_framebuffer_state(exa, pDst);
 571    bind_viewport_state(exa, pDst);
 572    bind_blend_state(exa, op, pSrcPicture, pMaskPicture);
 573    bind_rasterizer_state(exa);
 574    bind_shaders(exa, op, pSrcPicture, pMaskPicture);
 575    bind_samplers(exa, op, pSrcPicture, pMaskPicture,
 576                  pDstPicture, pSrc, pMask, pDst);
 577    bind_clip_state(exa);
 578    setup_constant_buffers(exa, pDst);
 579
 580    return FALSE;
 581 }
 582
 583 void xorg_composite(struct exa_context *exa,
 584                     struct exa_pixmap_priv *dst,
 585                     int srcX, int srcY, int maskX, int maskY,
 586                     int dstX, int dstY, int width, int height)
 587 {
 588    struct pipe_context *pipe = exa->pipe;
 589    struct pipe_buffer *buf = 0;
 590
 591    if (exa->num_bound_samplers == 0 ) { /* solid fill */
 592       buf = setup_vertex_data0(exa,
 593                                srcX, srcY, maskX, maskY,
 594                                dstX, dstY, width, height);
 595    } else if (exa->num_bound_samplers == 1 ) /* src */
 596       buf = setup_vertex_data1(exa,
 597                                srcX, srcY, maskX, maskY,
 598                                dstX, dstY, width, height);
 599    else if (exa->num_bound_samplers == 2) /* src + mask */
 600       buf = setup_vertex_data2(exa,
 601                                srcX, srcY, maskX, maskY,
 602                                dstX, dstY, width, height);
 603    else if (exa->num_bound_samplers == 3) { /* src + mask + dst */
 604       debug_assert(!"src/mask/dst not handled right now");
 605 #if 0
 606       buf = setup_vertex_data2(exa,
 607                                srcX, srcY, maskX, maskY,
 608                                dstX, dstY, width, height);
 609 #endif
 610    }
 611
 612    if (buf) {
 613       int num_attribs = 1; /*pos*/
 614       num_attribs += exa->num_bound_samplers;
 615       if (exa->has_solid_color)
 616          ++num_attribs;
 617
 618       util_draw_vertex_buffer(pipe, buf, 0,
 619                               PIPE_PRIM_TRIANGLE_FAN,
 620                               4,  /* verts */
 621                               num_attribs); /* attribs/vert */
 622
 623       pipe_buffer_reference(&buf, NULL);
 624    }
 625 }
 626
 627 boolean xorg_solid_bind_state(struct exa_context *exa,
 628                               struct exa_pixmap_priv *pixmap,
 629                               Pixel fg)
 630 {
 631    unsigned vs_traits, fs_traits;
 632    struct xorg_shader shader;
 633
 634    pixel_to_float4(fg, exa->solid_color);
 635    exa->has_solid_color = TRUE;
 636
 637    exa->solid_color[3] = 1.f;
 638
 639 #if 0
 640    debug_printf("Color Pixel=(%d, %d, %d, %d), RGBA=(%f, %f, %f, %f)\n",
 641                 (fg >> 24) & 0xff, (fg >> 16) & 0xff,
 642                 (fg >> 8) & 0xff,  (fg >> 0) & 0xff,
 643                 exa->solid_color[0], exa->solid_color[1],
 644                 exa->solid_color[2], exa->solid_color[3]);
 645 #endif
 646
 647    vs_traits = VS_SOLID_FILL;
 648    fs_traits = FS_SOLID_FILL;
 649
 650    bind_framebuffer_state(exa, pixmap);
 651    bind_viewport_state(exa, pixmap);
 652    bind_rasterizer_state(exa);
 653    bind_blend_state(exa, PictOpSrc, NULL, NULL);
 654    setup_constant_buffers(exa, pixmap);
 655    bind_clip_state(exa);
 656
 657    shader = xorg_shaders_get(exa->shaders, vs_traits, fs_traits);
 658    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 659    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 660
 661    return TRUE;
 662 }
 663
 664 void xorg_solid(struct exa_context *exa,
 665                 struct exa_pixmap_priv *pixmap,
 666                 int x0, int y0, int x1, int y1)
 667 {
 668    struct pipe_context *pipe = exa->pipe;
 669    struct pipe_buffer *buf = 0;
 670
 671    /* 1st vertex */
 672    setup_vertex0(exa->vertices2[0], x0, y0,
 673                  exa->solid_color);
 674    /* 2nd vertex */
 675    setup_vertex0(exa->vertices2[1], x1, y0,
 676                  exa->solid_color);
 677    /* 3rd vertex */
 678    setup_vertex0(exa->vertices2[2], x1, y1,
 679                  exa->solid_color);
 680    /* 4th vertex */
 681    setup_vertex0(exa->vertices2[3], x0, y1,
 682                  exa->solid_color);
 683
 684    buf = pipe_user_buffer_create(exa->pipe->screen,
 685                                  exa->vertices2,
 686                                  sizeof(exa->vertices2));
 687
 688
 689    if (buf) {
 690       util_draw_vertex_buffer(pipe, buf, 0,
 691                               PIPE_PRIM_TRIANGLE_FAN,
 692                               4,  /* verts */
 693                               2); /* attribs/vert */
 694
 695       pipe_buffer_reference(&buf, NULL);
 696    }
 697 }
 698
 699
 700 static INLINE void shift_rectx(float coords[4],
 701                                const float *bounds,
 702                                const float shift)
 703 {
 704    coords[0] += shift;
 705    coords[2] -= shift;
 706    if (bounds) {
 707       coords[2] = MIN2(coords[2], bounds[2]);
 708       /* bound x/y + width/height */
 709       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 710          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 711       }
 712    }
 713 }
 714
 715 static INLINE void shift_recty(float coords[4],
 716                                const float *bounds,
 717                                const float shift)
 718 {
 719    coords[1] += shift;
 720    coords[3] -= shift;
 721    if (bounds) {
 722       coords[3] = MIN2(coords[3], bounds[3]);
 723       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 724          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 725       }
 726    }
 727 }
 728
 729 static INLINE void bound_rect(float coords[4],
 730                               const float bounds[4],
 731                               float shift[4])
 732 {
 733    /* if outside the bounds */
 734    if (coords[0] > (bounds[0] + bounds[2]) ||
 735        coords[1] > (bounds[1] + bounds[3]) ||
 736        (coords[0] + coords[2]) < bounds[0] ||
 737        (coords[1] + coords[3]) < bounds[1]) {
 738       coords[0] = 0.f;
 739       coords[1] = 0.f;
 740       coords[2] = 0.f;
 741       coords[3] = 0.f;
 742       shift[0] = 0.f;
 743       shift[1] = 0.f;
 744       return;
 745    }
 746
 747    /* bound x */
 748    if (coords[0] < bounds[0]) {
 749       shift[0] = bounds[0] - coords[0];
 750       coords[2] -= shift[0];
 751       coords[0] = bounds[0];
 752    } else
 753       shift[0] = 0.f;
 754
 755    /* bound y */
 756    if (coords[1] < bounds[1]) {
 757       shift[1] = bounds[1] - coords[1];
 758       coords[3] -= shift[1];
 759       coords[1] = bounds[1];
 760    } else
 761       shift[1] = 0.f;
 762
 763    shift[2] = bounds[2] - coords[2];
 764    shift[3] = bounds[3] - coords[3];
 765    /* bound width/height */
 766    coords[2] = MIN2(coords[2], bounds[2]);
 767    coords[3] = MIN2(coords[3], bounds[3]);
 768
 769    /* bound x/y + width/height */
 770    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 771       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 772    }
 773    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 774       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 775    }
 776
 777    /* if outside the bounds */
 778    if ((coords[0] + coords[2]) < bounds[0] ||
 779        (coords[1] + coords[3]) < bounds[1]) {
 780       coords[0] = 0.f;
 781       coords[1] = 0.f;
 782       coords[2] = 0.f;
 783       coords[3] = 0.f;
 784       return;
 785    }
 786 }
 787
 788 static INLINE void sync_size(float *src_loc, float *dst_loc)
 789 {
 790    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 791    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 792    dst_loc[2] = src_loc[2];
 793    dst_loc[3] = src_loc[3];
 794 }
 795
 796
 797 static void renderer_copy_texture(struct exa_context *exa,
 798                                   struct pipe_texture *src,
 799                                   float sx1, float sy1,
 800                                   float sx2, float sy2,
 801                                   struct pipe_texture *dst,
 802                                   float dx1, float dy1,
 803                                   float dx2, float dy2)
 804 {
 805    struct pipe_context *pipe = exa->pipe;
 806    struct pipe_screen *screen = pipe->screen;
 807    struct pipe_buffer *buf;
 808    struct pipe_surface *dst_surf = screen->get_tex_surface(
 809       screen, dst, 0, 0, 0,
 810       PIPE_BUFFER_USAGE_GPU_WRITE);
 811    struct pipe_framebuffer_state fb;
 812    float s0, t0, s1, t1;
 813    struct xorg_shader shader;
 814
 815    assert(src->width[0] != 0);
 816    assert(src->height[0] != 0);
 817    assert(dst->width[0] != 0);
 818    assert(dst->height[0] != 0);
 819
 820 #if 1
 821    s0 = sx1 / src->width[0];
 822    s1 = sx2 / src->width[0];
 823    t0 = sy1 / src->height[0];
 824    t1 = sy2 / src->height[0];
 825 #else
 826    s0 = 0;
 827    s1 = 1;
 828    t0 = 0;
 829    t1 = 1;
 830 #endif
 831
 832 #if 0
 833    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 834                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 835                 s0, t0, s1, t1);
 836 #endif
 837
 838    assert(screen->is_format_supported(screen, dst_surf->format,
 839                                       PIPE_TEXTURE_2D,
 840                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 841                                       0));
 842
 843    /* save state (restored below) */
 844    cso_save_blend(exa->cso);
 845    cso_save_samplers(exa->cso);
 846    cso_save_sampler_textures(exa->cso);
 847    cso_save_framebuffer(exa->cso);
 848    cso_save_fragment_shader(exa->cso);
 849    cso_save_vertex_shader(exa->cso);
 850
 851    cso_save_viewport(exa->cso);
 852
 853
 854    /* set misc state we care about */
 855    {
 856       struct pipe_blend_state blend;
 857       memset(&blend, 0, sizeof(blend));
 858       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 859       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 860       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 861       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 862       blend.colormask = PIPE_MASK_RGBA;
 863       cso_set_blend(exa->cso, &blend);
 864    }
 865
 866    /* sampler */
 867    {
 868       struct pipe_sampler_state sampler;
 869       memset(&sampler, 0, sizeof(sampler));
 870       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 871       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 872       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 873       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 874       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 875       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 876       sampler.normalized_coords = 1;
 877       cso_single_sampler(exa->cso, 0, &sampler);
 878       cso_single_sampler_done(exa->cso);
 879    }
 880
 881    set_viewport(exa, dst_surf->width, dst_surf->height, Y0_TOP);
 882
 883    /* texture */
 884    cso_set_sampler_textures(exa->cso, 1, &src);
 885
 886    bind_rasterizer_state(exa);
 887
 888    /* shaders */
 889    shader = xorg_shaders_get(exa->shaders,
 890                              VS_COMPOSITE,
 891                              FS_COMPOSITE);
 892    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 893    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 894
 895    /* drawing dest */
 896    memset(&fb, 0, sizeof(fb));
 897    fb.width = dst_surf->width;
 898    fb.height = dst_surf->height;
 899    fb.nr_cbufs = 1;
 900    fb.cbufs[0] = dst_surf;
 901    {
 902       int i;
 903       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 904          fb.cbufs[i] = 0;
 905    }
 906    cso_set_framebuffer(exa->cso, &fb);
 907    setup_vs_constant_buffer(exa, fb.width, fb.height);
 908    setup_fs_constant_buffer(exa);
 909
 910    /* draw quad */
 911    buf = setup_vertex_data_tex(exa,
 912                                dx1, dy1,
 913                                dx2, dy2,
 914                                s0, t0, s1, t1,
 915                                0.0f);
 916
 917    if (buf) {
 918       util_draw_vertex_buffer(exa->pipe, buf, 0,
 919                               PIPE_PRIM_TRIANGLE_FAN,
 920                               4,  /* verts */
 921                               2); /* attribs/vert */
 922
 923       pipe_buffer_reference(&buf, NULL);
 924    }
 925
 926    /* restore state we changed */
 927    cso_restore_blend(exa->cso);
 928    cso_restore_samplers(exa->cso);
 929    cso_restore_sampler_textures(exa->cso);
 930    cso_restore_framebuffer(exa->cso);
 931    cso_restore_vertex_shader(exa->cso);
 932    cso_restore_fragment_shader(exa->cso);
 933    cso_restore_viewport(exa->cso);
 934
 935    pipe_surface_reference(&dst_surf, NULL);
 936 }
 937
 938
 939 static struct pipe_texture *
 940 create_sampler_texture(struct exa_context *ctx,
 941                        struct pipe_texture *src)
 942 {
 943    enum pipe_format format;
 944    struct pipe_context *pipe = ctx->pipe;
 945    struct pipe_screen *screen = pipe->screen;
 946    struct pipe_texture *pt;
 947    struct pipe_texture templ;
 948
 949    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 950
 951    /* the coming in texture should already have that invariance */
 952    debug_assert(screen->is_format_supported(screen, src->format,
 953                                             PIPE_TEXTURE_2D,
 954                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 955
 956    format = src->format;
 957
 958    memset(&templ, 0, sizeof(templ));
 959    templ.target = PIPE_TEXTURE_2D;
 960    templ.format = format;
 961    templ.last_level = 0;
 962    templ.width[0] = src->width[0];
 963    templ.height[0] = src->height[0];
 964    templ.depth[0] = 1;
 965    pf_get_block(format, &templ.block);
 966    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 967
 968    pt = screen->texture_create(screen, &templ);
 969
 970    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 971
 972    if (!pt)
 973       return NULL;
 974
 975    {
 976       /* copy source framebuffer surface into texture */
 977       struct pipe_surface *ps_read = screen->get_tex_surface(
 978          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 979       struct pipe_surface *ps_tex = screen->get_tex_surface(
 980          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 981       pipe->surface_copy(pipe,
 982                          ps_tex, /* dest */
 983                          0, 0, /* destx/y */
 984                          ps_read,
 985                          0, 0, src->width[0], src->height[0]);
 986       pipe_surface_reference(&ps_read, NULL);
 987       pipe_surface_reference(&ps_tex, NULL);
 988    }
 989
 990    return pt;
 991 }
 992
 993 void xorg_copy_pixmap(struct exa_context *ctx,
 994                       struct exa_pixmap_priv *dst_priv, int dx, int dy,
 995                       struct exa_pixmap_priv *src_priv, int sx, int sy,
 996                       int width, int height)
 997 {
 998    float dst_loc[4], src_loc[4];
 999    float dst_bounds[4], src_bounds[4];
1000    float src_shift[4], dst_shift[4], shift[4];
1001    struct pipe_texture *dst = dst_priv->tex;
1002    struct pipe_texture *src = src_priv->tex;
1003
1004    if (ctx->pipe->is_texture_referenced(ctx->pipe, src, 0, 0) &
1005        PIPE_REFERENCED_FOR_WRITE)
1006       ctx->pipe->flush(ctx->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
1007
1008    dst_loc[0] = dx;
1009    dst_loc[1] = dy;
1010    dst_loc[2] = width;
1011    dst_loc[3] = height;
1012    dst_bounds[0] = 0.f;
1013    dst_bounds[1] = 0.f;
1014    dst_bounds[2] = dst->width[0];
1015    dst_bounds[3] = dst->height[0];
1016
1017    src_loc[0] = sx;
1018    src_loc[1] = sy;
1019    src_loc[2] = width;
1020    src_loc[3] = height;
1021    src_bounds[0] = 0.f;
1022    src_bounds[1] = 0.f;
1023    src_bounds[2] = src->width[0];
1024    src_bounds[3] = src->height[0];
1025
1026    bound_rect(src_loc, src_bounds, src_shift);
1027    bound_rect(dst_loc, dst_bounds, dst_shift);
1028    shift[0] = src_shift[0] - dst_shift[0];
1029    shift[1] = src_shift[1] - dst_shift[1];
1030
1031    if (shift[0] < 0)
1032       shift_rectx(src_loc, src_bounds, -shift[0]);
1033    else
1034       shift_rectx(dst_loc, dst_bounds, shift[0]);
1035
1036    if (shift[1] < 0)
1037       shift_recty(src_loc, src_bounds, -shift[1]);
1038    else
1039       shift_recty(dst_loc, dst_bounds, shift[1]);
1040
1041    sync_size(src_loc, dst_loc);
1042
1043    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
1044        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
1045       struct pipe_texture *temp_src = src;
1046
1047       if (src == dst)
1048          temp_src = create_sampler_texture(ctx, src);
1049
1050       renderer_copy_texture(ctx,
1051                             temp_src,
1052                             src_loc[0],
1053                             src_loc[1],
1054                             src_loc[0] + src_loc[2],
1055                             src_loc[1] + src_loc[3],
1056                             dst,
1057                             dst_loc[0],
1058                             dst_loc[1],
1059                             dst_loc[0] + dst_loc[2],
1060                             dst_loc[1] + dst_loc[3]);
1061
1062       if (src == dst)
1063          pipe_texture_reference(&temp_src, NULL);
1064    }
1065 }
1066