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 static INLINE void
  61 render_pixel_to_float4(PictFormatPtr format,
  62                        CARD32 pixel, float *color)
  63 {
  64    CARD32           r, g, b, a;
  65
  66    debug_assert(format->type == PictTypeDirect);
  67
  68    r = (pixel >> format->direct.red) & format->direct.redMask;
  69    g = (pixel >> format->direct.green) & format->direct.greenMask;
  70    b = (pixel >> format->direct.blue) & format->direct.blueMask;
  71    a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
  72    color[0] = ((float)r) / ((float)format->direct.redMask);
  73    color[1] = ((float)g) / ((float)format->direct.greenMask);
  74    color[2] = ((float)b) / ((float)format->direct.blueMask);
  75    color[3] = ((float)a) / ((float)format->direct.alphaMask);
  76 }
  77
  78 struct acceleration_info {
  79    int op : 16;
  80    int with_mask : 1;
  81    int component_alpha : 1;
  82 };
  83 static const struct acceleration_info accelerated_ops[] = {
  84    {PictOpClear,       1, 0},
  85    {PictOpSrc,         1, 0},
  86    {PictOpDst,         1, 0},
  87    {PictOpOver,        1, 0},
  88    {PictOpOverReverse, 1, 0},
  89    {PictOpIn,          1, 0},
  90    {PictOpInReverse,   1, 0},
  91    {PictOpOut,         1, 0},
  92    {PictOpOutReverse,  1, 0},
  93    {PictOpAtop,        1, 0},
  94    {PictOpAtopReverse, 1, 0},
  95    {PictOpXor,         1, 0},
  96    {PictOpAdd,         1, 0},
  97    {PictOpSaturate,    1, 0},
  98 };
  99
 100 static struct xorg_composite_blend
 101 blend_for_op(int op)
 102 {
 103    const int num_blends =
 104       sizeof(xorg_blends)/sizeof(struct xorg_composite_blend);
 105    int i;
 106
 107    for (i = 0; i < num_blends; ++i) {
 108       if (xorg_blends[i].op == op)
 109          return xorg_blends[i];
 110    }
 111    return xorg_blends[BLEND_OP_OVER];
 112 }
 113
 114 static INLINE int
 115 render_repeat_to_gallium(int mode)
 116 {
 117    switch(mode) {
 118    case RepeatNone:
 119       return PIPE_TEX_WRAP_CLAMP;
 120    case RepeatNormal:
 121       return PIPE_TEX_WRAP_REPEAT;
 122    case RepeatReflect:
 123       return PIPE_TEX_WRAP_MIRROR_REPEAT;
 124    case RepeatPad:
 125       return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 126    default:
 127       debug_printf("Unsupported repeat mode\n");
 128    }
 129    return PIPE_TEX_WRAP_REPEAT;
 130 }
 131
 132
 133 static INLINE void
 134 setup_vertex0(float vertex[2][4], float x, float y,
 135               float color[4])
 136 {
 137    vertex[0][0] = x;
 138    vertex[0][1] = y;
 139    vertex[0][2] = 0.f; /*z*/
 140    vertex[0][3] = 1.f; /*w*/
 141
 142    vertex[1][0] = color[0]; /*r*/
 143    vertex[1][1] = color[1]; /*g*/
 144    vertex[1][2] = color[2]; /*b*/
 145    vertex[1][3] = color[3]; /*a*/
 146 }
 147
 148 static struct pipe_buffer *
 149 setup_vertex_data0(struct exa_context *ctx,
 150                    int srcX, int srcY, int maskX, int maskY,
 151                    int dstX, int dstY, int width, int height)
 152 {
 153    /* 1st vertex */
 154    setup_vertex0(ctx->vertices2[0], dstX, dstY,
 155                  ctx->solid_color);
 156    /* 2nd vertex */
 157    setup_vertex0(ctx->vertices2[1], dstX + width, dstY,
 158                  ctx->solid_color);
 159    /* 3rd vertex */
 160    setup_vertex0(ctx->vertices2[2], dstX + width, dstY + height,
 161                  ctx->solid_color);
 162    /* 4th vertex */
 163    setup_vertex0(ctx->vertices2[3], dstX, dstY + height,
 164                  ctx->solid_color);
 165
 166    return pipe_user_buffer_create(ctx->pipe->screen,
 167                                   ctx->vertices2,
 168                                   sizeof(ctx->vertices2));
 169 }
 170
 171 static INLINE void
 172 setup_vertex1(float vertex[2][4], float x, float y, float s, float t)
 173 {
 174    vertex[0][0] = x;
 175    vertex[0][1] = y;
 176    vertex[0][2] = 0.f; /*z*/
 177    vertex[0][3] = 1.f; /*w*/
 178
 179    vertex[1][0] = s;   /*s*/
 180    vertex[1][1] = t;   /*t*/
 181    vertex[1][2] = 0.f; /*r*/
 182    vertex[1][3] = 1.f; /*q*/
 183 }
 184
 185 static struct pipe_buffer *
 186 setup_vertex_data1(struct exa_context *ctx,
 187                    int srcX, int srcY, int maskX, int maskY,
 188                    int dstX, int dstY, int width, int height)
 189 {
 190    float s0, t0, s1, t1;
 191    struct pipe_texture *src = ctx->bound_textures[0];
 192
 193    s0 = srcX / src->width[0];
 194    s1 = srcX + width / src->width[0];
 195    t0 = srcY / src->height[0];
 196    t1 = srcY + height / src->height[0];
 197
 198    /* 1st vertex */
 199    setup_vertex1(ctx->vertices2[0], dstX, dstY,
 200                  s0, t0);
 201    /* 2nd vertex */
 202    setup_vertex1(ctx->vertices2[1], dstX + width, dstY,
 203                  s1, t0);
 204    /* 3rd vertex */
 205    setup_vertex1(ctx->vertices2[2], dstX + width, dstY + height,
 206                  s1, t1);
 207    /* 4th vertex */
 208    setup_vertex1(ctx->vertices2[3], dstX, dstY + height,
 209                  s0, t1);
 210
 211    return pipe_user_buffer_create(ctx->pipe->screen,
 212                                   ctx->vertices2,
 213                                   sizeof(ctx->vertices2));
 214 }
 215
 216 static struct pipe_buffer *
 217 setup_vertex_data_tex(struct exa_context *ctx,
 218                       float x0, float y0, float x1, float y1,
 219                       float s0, float t0, float s1, float t1,
 220                       float z)
 221 {
 222    /* 1st vertex */
 223    setup_vertex1(ctx->vertices2[0], x0, y0,
 224                  s0, t0);
 225    /* 2nd vertex */
 226    setup_vertex1(ctx->vertices2[1], x1, y0,
 227                  s1, t0);
 228    /* 3rd vertex */
 229    setup_vertex1(ctx->vertices2[2], x1, y1,
 230                  s1, t1);
 231    /* 4th vertex */
 232    setup_vertex1(ctx->vertices2[3], x0, y1,
 233                  s0, t1);
 234
 235    return pipe_user_buffer_create(ctx->pipe->screen,
 236                                   ctx->vertices2,
 237                                   sizeof(ctx->vertices2));
 238 }
 239
 240
 241
 242 static INLINE void
 243 setup_vertex2(float vertex[3][4], float x, float y,
 244               float s0, float t0, float s1, float t1)
 245 {
 246    vertex[0][0] = x;
 247    vertex[0][1] = y;
 248    vertex[0][2] = 0.f; /*z*/
 249    vertex[0][3] = 1.f; /*w*/
 250
 251    vertex[1][0] = s0;  /*s*/
 252    vertex[1][1] = t0;  /*t*/
 253    vertex[1][2] = 0.f; /*r*/
 254    vertex[1][3] = 1.f; /*q*/
 255
 256    vertex[2][0] = s1;  /*s*/
 257    vertex[2][1] = t1;  /*t*/
 258    vertex[2][2] = 0.f; /*r*/
 259    vertex[2][3] = 1.f; /*q*/
 260 }
 261
 262 static struct pipe_buffer *
 263 setup_vertex_data2(struct exa_context *ctx,
 264                    int srcX, int srcY, int maskX, int maskY,
 265                    int dstX, int dstY, int width, int height)
 266 {
 267    float st0[4], st1[4];
 268    struct pipe_texture *src = ctx->bound_textures[0];
 269    struct pipe_texture *mask = ctx->bound_textures[0];
 270
 271    st0[0] = srcX / src->width[0];
 272    st0[1] = srcY / src->height[0];
 273    st0[2] = srcX + width / src->width[0];
 274    st0[3] = srcY + height / src->height[0];
 275
 276    st1[0] = maskX / mask->width[0];
 277    st1[1] = maskY / mask->height[0];
 278    st1[2] = maskX + width / mask->width[0];
 279    st1[3] = maskY + height / mask->height[0];
 280
 281    /* 1st vertex */
 282    setup_vertex2(ctx->vertices3[0], dstX, dstY,
 283                  st0[0], st0[1], st1[0], st1[1]);
 284    /* 2nd vertex */
 285    setup_vertex2(ctx->vertices3[1], dstX + width, dstY,
 286                  st0[2], st0[1], st1[2], st1[1]);
 287    /* 3rd vertex */
 288    setup_vertex2(ctx->vertices3[2], dstX + width, dstY + height,
 289                  st0[2], st0[3], st1[2], st1[3]);
 290    /* 4th vertex */
 291    setup_vertex2(ctx->vertices3[3], dstX, dstY + height,
 292                  st0[0], st0[3], st1[0], st1[3]);
 293
 294    return pipe_user_buffer_create(ctx->pipe->screen,
 295                                   ctx->vertices3,
 296                                   sizeof(ctx->vertices3));
 297 }
 298
 299 boolean xorg_composite_accelerated(int op,
 300                                    PicturePtr pSrcPicture,
 301                                    PicturePtr pMaskPicture,
 302                                    PicturePtr pDstPicture)
 303 {
 304    unsigned i;
 305    unsigned accel_ops_count =
 306       sizeof(accelerated_ops)/sizeof(struct acceleration_info);
 307
 308    if (pSrcPicture) {
 309       /* component alpha not supported */
 310       if (pSrcPicture->componentAlpha)
 311          return FALSE;
 312    }
 313
 314    for (i = 0; i < accel_ops_count; ++i) {
 315       if (op == accelerated_ops[i].op) {
 316          if (pMaskPicture && !accelerated_ops[i].with_mask)
 317             return FALSE;
 318          return TRUE;
 319       }
 320    }
 321    return FALSE;
 322 }
 323
 324 static void
 325 bind_clip_state(struct exa_context *exa)
 326 {
 327 }
 328
 329 static void
 330 bind_framebuffer_state(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 331 {
 332    unsigned i;
 333    struct pipe_framebuffer_state state;
 334    struct pipe_surface *surface = exa_gpu_surface(exa, pDst);
 335    memset(&state, 0, sizeof(struct pipe_framebuffer_state));
 336
 337    state.width  = pDst->tex->width[0];
 338    state.height = pDst->tex->height[0];
 339
 340    state.nr_cbufs = 1;
 341    state.cbufs[0] = surface;
 342    for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 343       state.cbufs[i] = 0;
 344
 345    /* currently we don't use depth/stencil */
 346    state.zsbuf = 0;
 347
 348    cso_set_framebuffer(exa->cso, &state);
 349
 350    /* we do fire and forget for the framebuffer, this is the forget part */
 351    pipe_surface_reference(&surface, NULL);
 352 }
 353
 354 enum AxisOrientation {
 355    Y0_BOTTOM,
 356    Y0_TOP
 357 };
 358
 359 static void
 360 set_viewport(struct exa_context *exa, int width, int height,
 361              enum AxisOrientation orientation)
 362 {
 363    struct pipe_viewport_state viewport;
 364    float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
 365
 366    viewport.scale[0] =  width / 2.f;
 367    viewport.scale[1] =  height / y_scale;
 368    viewport.scale[2] =  1.0;
 369    viewport.scale[3] =  1.0;
 370    viewport.translate[0] = width / 2.f;
 371    viewport.translate[1] = height / 2.f;
 372    viewport.translate[2] = 0.0;
 373    viewport.translate[3] = 0.0;
 374
 375    cso_set_viewport(exa->cso, &viewport);
 376 }
 377
 378 static void
 379 bind_viewport_state(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 380 {
 381    int width = pDst->tex->width[0];
 382    int height = pDst->tex->height[0];
 383
 384    /*debug_printf("Bind viewport (%d, %d)\n", width, height);*/
 385
 386    set_viewport(exa, width, height, Y0_TOP);
 387 }
 388
 389 static void
 390 bind_blend_state(struct exa_context *exa, int op,
 391                  PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 392 {
 393    boolean component_alpha = (pSrcPicture) ?
 394                              pSrcPicture->componentAlpha : FALSE;
 395    struct xorg_composite_blend blend_opt;
 396    struct pipe_blend_state blend;
 397
 398    if (component_alpha) {
 399       op = PictOpOver;
 400    }
 401    blend_opt = blend_for_op(op);
 402
 403    memset(&blend, 0, sizeof(struct pipe_blend_state));
 404    blend.blend_enable = 1;
 405    blend.colormask |= PIPE_MASK_R;
 406    blend.colormask |= PIPE_MASK_G;
 407    blend.colormask |= PIPE_MASK_B;
 408    blend.colormask |= PIPE_MASK_A;
 409
 410    blend.rgb_src_factor   = blend_opt.rgb_src_factor;
 411    blend.alpha_src_factor = blend_opt.alpha_src_factor;
 412    blend.rgb_dst_factor   = blend_opt.rgb_dst_factor;
 413    blend.alpha_dst_factor = blend_opt.alpha_dst_factor;
 414
 415    cso_set_blend(exa->cso, &blend);
 416 }
 417
 418 static void
 419 bind_rasterizer_state(struct exa_context *exa)
 420 {
 421    struct pipe_rasterizer_state raster;
 422    memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
 423    raster.gl_rasterization_rules = 1;
 424    cso_set_rasterizer(exa->cso, &raster);
 425 }
 426
 427 static void
 428 bind_shaders(struct exa_context *exa, int op,
 429              PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 430 {
 431    unsigned vs_traits = 0, fs_traits = 0;
 432    struct xorg_shader shader;
 433
 434    exa->has_solid_color = FALSE;
 435
 436    if (pSrcPicture) {
 437       if (pSrcPicture->pSourcePict) {
 438          if (pSrcPicture->pSourcePict->type == SourcePictTypeSolidFill) {
 439             fs_traits |= FS_SOLID_FILL;
 440             vs_traits |= VS_SOLID_FILL;
 441             render_pixel_to_float4(pSrcPicture->pFormat,
 442                                    pSrcPicture->pSourcePict->solidFill.color,
 443                                    exa->solid_color);
 444             exa->has_solid_color = TRUE;
 445          } else {
 446             debug_assert("!gradients not supported");
 447          }
 448       } else {
 449          fs_traits |= FS_COMPOSITE;
 450          vs_traits |= VS_COMPOSITE;
 451       }
 452    }
 453
 454    if (pMaskPicture) {
 455       vs_traits |= VS_MASK;
 456       fs_traits |= FS_MASK;
 457    }
 458
 459    shader = xorg_shaders_get(exa->shaders, vs_traits, fs_traits);
 460    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 461    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 462 }
 463
 464
 465 static void
 466 bind_samplers(struct exa_context *exa, int op,
 467               PicturePtr pSrcPicture, PicturePtr pMaskPicture,
 468               PicturePtr pDstPicture,
 469               struct exa_pixmap_priv *pSrc,
 470               struct exa_pixmap_priv *pMask,
 471               struct exa_pixmap_priv *pDst)
 472 {
 473    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 474    struct pipe_sampler_state src_sampler, mask_sampler;
 475
 476    exa->num_bound_samplers = 0;
 477
 478    memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 479    memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 480
 481    if (pSrcPicture && pSrc) {
 482       unsigned src_wrap = render_repeat_to_gallium(
 483          pSrcPicture->repeatType);
 484       src_sampler.wrap_s = src_wrap;
 485       src_sampler.wrap_t = src_wrap;
 486       src_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 487       src_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 488       src_sampler.normalized_coords = 1;
 489       samplers[0] = &src_sampler;
 490       exa->bound_textures[0] = pSrc->tex;
 491       ++exa->num_bound_samplers;
 492    }
 493
 494    if (pMaskPicture && pMask) {
 495       unsigned mask_wrap = render_repeat_to_gallium(
 496          pMaskPicture->repeatType);
 497       mask_sampler.wrap_s = mask_wrap;
 498       mask_sampler.wrap_t = mask_wrap;
 499       mask_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 500       mask_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 501       mask_sampler.normalized_coords = 1;
 502       samplers[1] = &mask_sampler;
 503       exa->bound_textures[1] = pMask->tex;
 504       ++exa->num_bound_samplers;
 505    }
 506
 507    cso_set_samplers(exa->cso, exa->num_bound_samplers,
 508                     (const struct pipe_sampler_state **)samplers);
 509    cso_set_sampler_textures(exa->cso, exa->num_bound_samplers,
 510                             exa->bound_textures);
 511 }
 512
 513 static void
 514 setup_vs_constant_buffer(struct exa_context *exa,
 515                          int width, int height)
 516 {
 517    const int param_bytes = 8 * sizeof(float);
 518    float vs_consts[8] = {
 519       2.f/width, 2.f/height, 1, 1,
 520       -1, -1, 0, 0
 521    };
 522    struct pipe_constant_buffer *cbuf = &exa->vs_const_buffer;
 523
 524    pipe_buffer_reference(&cbuf->buffer, NULL);
 525    cbuf->buffer = pipe_buffer_create(exa->pipe->screen, 16,
 526                                      PIPE_BUFFER_USAGE_CONSTANT,
 527                                      param_bytes);
 528
 529    if (cbuf->buffer) {
 530       pipe_buffer_write(exa->pipe->screen, cbuf->buffer,
 531                         0, param_bytes, vs_consts);
 532    }
 533    exa->pipe->set_constant_buffer(exa->pipe, PIPE_SHADER_VERTEX, 0, cbuf);
 534 }
 535
 536
 537 static void
 538 setup_fs_constant_buffer(struct exa_context *exa)
 539 {
 540    const int param_bytes = 4 * sizeof(float);
 541    float fs_consts[8] = {
 542       0, 0, 0, 1,
 543    };
 544    struct pipe_constant_buffer *cbuf = &exa->fs_const_buffer;
 545
 546    pipe_buffer_reference(&cbuf->buffer, NULL);
 547    cbuf->buffer = pipe_buffer_create(exa->pipe->screen, 16,
 548                                      PIPE_BUFFER_USAGE_CONSTANT,
 549                                      param_bytes);
 550
 551    if (cbuf->buffer) {
 552       pipe_buffer_write(exa->pipe->screen, cbuf->buffer,
 553                         0, param_bytes, fs_consts);
 554    }
 555    exa->pipe->set_constant_buffer(exa->pipe, PIPE_SHADER_FRAGMENT, 0, cbuf);
 556 }
 557
 558 static void
 559 setup_constant_buffers(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 560 {
 561    int width = pDst->tex->width[0];
 562    int height = pDst->tex->height[0];
 563
 564    setup_vs_constant_buffer(exa, width, height);
 565    setup_fs_constant_buffer(exa);
 566 }
 567
 568 boolean xorg_composite_bind_state(struct exa_context *exa,
 569                                   int op,
 570                                   PicturePtr pSrcPicture,
 571                                   PicturePtr pMaskPicture,
 572                                   PicturePtr pDstPicture,
 573                                   struct exa_pixmap_priv *pSrc,
 574                                   struct exa_pixmap_priv *pMask,
 575                                   struct exa_pixmap_priv *pDst)
 576 {
 577    bind_framebuffer_state(exa, pDst);
 578    bind_viewport_state(exa, pDst);
 579    bind_blend_state(exa, op, pSrcPicture, pMaskPicture);
 580    bind_rasterizer_state(exa);
 581    bind_shaders(exa, op, pSrcPicture, pMaskPicture);
 582    bind_samplers(exa, op, pSrcPicture, pMaskPicture,
 583                  pDstPicture, pSrc, pMask, pDst);
 584    bind_clip_state(exa);
 585    setup_constant_buffers(exa, pDst);
 586
 587    return FALSE;
 588 }
 589
 590 void xorg_composite(struct exa_context *exa,
 591                     struct exa_pixmap_priv *dst,
 592                     int srcX, int srcY, int maskX, int maskY,
 593                     int dstX, int dstY, int width, int height)
 594 {
 595    struct pipe_context *pipe = exa->pipe;
 596    struct pipe_buffer *buf = 0;
 597
 598    if (exa->num_bound_samplers == 0 ) { /* solid fill */
 599       buf = setup_vertex_data0(exa,
 600                                srcX, srcY, maskX, maskY,
 601                                dstX, dstY, width, height);
 602    } else if (exa->num_bound_samplers == 1 ) /* src */
 603       buf = setup_vertex_data1(exa,
 604                                srcX, srcY, maskX, maskY,
 605                                dstX, dstY, width, height);
 606    else if (exa->num_bound_samplers == 2) /* src + mask */
 607       buf = setup_vertex_data2(exa,
 608                                srcX, srcY, maskX, maskY,
 609                                dstX, dstY, width, height);
 610    else if (exa->num_bound_samplers == 3) { /* src + mask + dst */
 611       debug_assert(!"src/mask/dst not handled right now");
 612 #if 0
 613       buf = setup_vertex_data2(exa,
 614                                srcX, srcY, maskX, maskY,
 615                                dstX, dstY, width, height);
 616 #endif
 617    }
 618
 619    if (buf) {
 620       int num_attribs = 1; /*pos*/
 621       num_attribs += exa->num_bound_samplers;
 622       if (exa->has_solid_color)
 623          ++num_attribs;
 624
 625       util_draw_vertex_buffer(pipe, buf, 0,
 626                               PIPE_PRIM_TRIANGLE_FAN,
 627                               4,  /* verts */
 628                               num_attribs); /* attribs/vert */
 629
 630       pipe_buffer_reference(&buf, NULL);
 631    }
 632 }
 633
 634 boolean xorg_solid_bind_state(struct exa_context *exa,
 635                               struct exa_pixmap_priv *pixmap,
 636                               Pixel fg)
 637 {
 638    unsigned vs_traits, fs_traits;
 639    struct xorg_shader shader;
 640
 641    pixel_to_float4(fg, exa->solid_color);
 642    exa->has_solid_color = TRUE;
 643
 644    exa->solid_color[3] = 1.f;
 645
 646 #if 0
 647    debug_printf("Color Pixel=(%d, %d, %d, %d), RGBA=(%f, %f, %f, %f)\n",
 648                 (fg >> 24) & 0xff, (fg >> 16) & 0xff,
 649                 (fg >> 8) & 0xff,  (fg >> 0) & 0xff,
 650                 exa->solid_color[0], exa->solid_color[1],
 651                 exa->solid_color[2], exa->solid_color[3]);
 652 #endif
 653
 654    vs_traits = VS_SOLID_FILL;
 655    fs_traits = FS_SOLID_FILL;
 656
 657    bind_framebuffer_state(exa, pixmap);
 658    bind_viewport_state(exa, pixmap);
 659    bind_rasterizer_state(exa);
 660    bind_blend_state(exa, PictOpSrc, NULL, NULL);
 661    setup_constant_buffers(exa, pixmap);
 662    bind_clip_state(exa);
 663
 664    shader = xorg_shaders_get(exa->shaders, vs_traits, fs_traits);
 665    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 666    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 667
 668    return TRUE;
 669 }
 670
 671 void xorg_solid(struct exa_context *exa,
 672                 struct exa_pixmap_priv *pixmap,
 673                 int x0, int y0, int x1, int y1)
 674 {
 675    struct pipe_context *pipe = exa->pipe;
 676    struct pipe_buffer *buf = 0;
 677
 678    /* 1st vertex */
 679    setup_vertex0(exa->vertices2[0], x0, y0,
 680                  exa->solid_color);
 681    /* 2nd vertex */
 682    setup_vertex0(exa->vertices2[1], x1, y0,
 683                  exa->solid_color);
 684    /* 3rd vertex */
 685    setup_vertex0(exa->vertices2[2], x1, y1,
 686                  exa->solid_color);
 687    /* 4th vertex */
 688    setup_vertex0(exa->vertices2[3], x0, y1,
 689                  exa->solid_color);
 690
 691    buf = pipe_user_buffer_create(exa->pipe->screen,
 692                                  exa->vertices2,
 693                                  sizeof(exa->vertices2));
 694
 695
 696    if (buf) {
 697       util_draw_vertex_buffer(pipe, buf, 0,
 698                               PIPE_PRIM_TRIANGLE_FAN,
 699                               4,  /* verts */
 700                               2); /* attribs/vert */
 701
 702       pipe_buffer_reference(&buf, NULL);
 703    }
 704 }
 705
 706
 707 static INLINE void shift_rectx(float coords[4],
 708                                const float *bounds,
 709                                const float shift)
 710 {
 711    coords[0] += shift;
 712    coords[2] -= shift;
 713    if (bounds) {
 714       coords[2] = MIN2(coords[2], bounds[2]);
 715       /* bound x/y + width/height */
 716       if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 717          coords[2] = (bounds[0] + bounds[2]) - coords[0];
 718       }
 719    }
 720 }
 721
 722 static INLINE void shift_recty(float coords[4],
 723                                const float *bounds,
 724                                const float shift)
 725 {
 726    coords[1] += shift;
 727    coords[3] -= shift;
 728    if (bounds) {
 729       coords[3] = MIN2(coords[3], bounds[3]);
 730       if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 731          coords[3] = (bounds[1] + bounds[3]) - coords[1];
 732       }
 733    }
 734 }
 735
 736 static INLINE void bound_rect(float coords[4],
 737                               const float bounds[4],
 738                               float shift[4])
 739 {
 740    /* if outside the bounds */
 741    if (coords[0] > (bounds[0] + bounds[2]) ||
 742        coords[1] > (bounds[1] + bounds[3]) ||
 743        (coords[0] + coords[2]) < bounds[0] ||
 744        (coords[1] + coords[3]) < bounds[1]) {
 745       coords[0] = 0.f;
 746       coords[1] = 0.f;
 747       coords[2] = 0.f;
 748       coords[3] = 0.f;
 749       shift[0] = 0.f;
 750       shift[1] = 0.f;
 751       return;
 752    }
 753
 754    /* bound x */
 755    if (coords[0] < bounds[0]) {
 756       shift[0] = bounds[0] - coords[0];
 757       coords[2] -= shift[0];
 758       coords[0] = bounds[0];
 759    } else
 760       shift[0] = 0.f;
 761
 762    /* bound y */
 763    if (coords[1] < bounds[1]) {
 764       shift[1] = bounds[1] - coords[1];
 765       coords[3] -= shift[1];
 766       coords[1] = bounds[1];
 767    } else
 768       shift[1] = 0.f;
 769
 770    shift[2] = bounds[2] - coords[2];
 771    shift[3] = bounds[3] - coords[3];
 772    /* bound width/height */
 773    coords[2] = MIN2(coords[2], bounds[2]);
 774    coords[3] = MIN2(coords[3], bounds[3]);
 775
 776    /* bound x/y + width/height */
 777    if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {
 778       coords[2] = (bounds[0] + bounds[2]) - coords[0];
 779    }
 780    if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {
 781       coords[3] = (bounds[1] + bounds[3]) - coords[1];
 782    }
 783
 784    /* if outside the bounds */
 785    if ((coords[0] + coords[2]) < bounds[0] ||
 786        (coords[1] + coords[3]) < bounds[1]) {
 787       coords[0] = 0.f;
 788       coords[1] = 0.f;
 789       coords[2] = 0.f;
 790       coords[3] = 0.f;
 791       return;
 792    }
 793 }
 794
 795 static INLINE void sync_size(float *src_loc, float *dst_loc)
 796 {
 797    src_loc[2] = MIN2(src_loc[2], dst_loc[2]);
 798    src_loc[3] = MIN2(src_loc[3], dst_loc[3]);
 799    dst_loc[2] = src_loc[2];
 800    dst_loc[3] = src_loc[3];
 801 }
 802
 803
 804 static void renderer_copy_texture(struct exa_context *exa,
 805                                   struct pipe_texture *src,
 806                                   float sx1, float sy1,
 807                                   float sx2, float sy2,
 808                                   struct pipe_texture *dst,
 809                                   float dx1, float dy1,
 810                                   float dx2, float dy2)
 811 {
 812    struct pipe_context *pipe = exa->pipe;
 813    struct pipe_screen *screen = pipe->screen;
 814    struct pipe_buffer *buf;
 815    struct pipe_surface *dst_surf = screen->get_tex_surface(
 816       screen, dst, 0, 0, 0,
 817       PIPE_BUFFER_USAGE_GPU_WRITE);
 818    struct pipe_framebuffer_state fb;
 819    float s0, t0, s1, t1;
 820    struct xorg_shader shader;
 821
 822    assert(src->width[0] != 0);
 823    assert(src->height[0] != 0);
 824    assert(dst->width[0] != 0);
 825    assert(dst->height[0] != 0);
 826
 827 #if 1
 828    s0 = sx1 / src->width[0];
 829    s1 = sx2 / src->width[0];
 830    t0 = sy1 / src->height[0];
 831    t1 = sy2 / src->height[0];
 832 #else
 833    s0 = 0;
 834    s1 = 1;
 835    t0 = 0;
 836    t1 = 1;
 837 #endif
 838
 839 #if 1
 840    debug_printf("copy texture src=[%f, %f, %f, %f], dst=[%f, %f, %f, %f], tex=[%f, %f, %f, %f]\n",
 841                 sx1, sy1, sx2, sy2, dx1, dy1, dx2, dy2,
 842                 s0, t0, s1, t1);
 843 #endif
 844
 845    assert(screen->is_format_supported(screen, dst_surf->format,
 846                                       PIPE_TEXTURE_2D,
 847                                       PIPE_TEXTURE_USAGE_RENDER_TARGET,
 848                                       0));
 849
 850    /* save state (restored below) */
 851    cso_save_blend(exa->cso);
 852    cso_save_samplers(exa->cso);
 853    cso_save_sampler_textures(exa->cso);
 854    cso_save_framebuffer(exa->cso);
 855    cso_save_fragment_shader(exa->cso);
 856    cso_save_vertex_shader(exa->cso);
 857
 858    cso_save_viewport(exa->cso);
 859
 860
 861    /* set misc state we care about */
 862    {
 863       struct pipe_blend_state blend;
 864       memset(&blend, 0, sizeof(blend));
 865       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 866       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 867       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 868       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 869       blend.colormask = PIPE_MASK_RGBA;
 870       cso_set_blend(exa->cso, &blend);
 871    }
 872
 873    /* sampler */
 874    {
 875       struct pipe_sampler_state sampler;
 876       memset(&sampler, 0, sizeof(sampler));
 877       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 878       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 879       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 880       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 881       sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 882       sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 883       sampler.normalized_coords = 1;
 884       cso_single_sampler(exa->cso, 0, &sampler);
 885       cso_single_sampler_done(exa->cso);
 886    }
 887
 888    set_viewport(exa, dst_surf->width, dst_surf->height, Y0_TOP);
 889
 890    /* texture */
 891    cso_set_sampler_textures(exa->cso, 1, &src);
 892
 893    /* shaders */
 894    shader = xorg_shaders_get(exa->shaders,
 895                              VS_COMPOSITE,
 896                              FS_COMPOSITE);
 897    cso_set_vertex_shader_handle(exa->cso, shader.vs);
 898    cso_set_fragment_shader_handle(exa->cso, shader.fs);
 899
 900    /* drawing dest */
 901    memset(&fb, 0, sizeof(fb));
 902    fb.width = dst_surf->width;
 903    fb.height = dst_surf->height;
 904    fb.nr_cbufs = 1;
 905    fb.cbufs[0] = dst_surf;
 906    {
 907       int i;
 908       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 909          fb.cbufs[i] = 0;
 910    }
 911    cso_set_framebuffer(exa->cso, &fb);
 912    setup_vs_constant_buffer(exa, fb.width, fb.height);
 913    setup_fs_constant_buffer(exa);
 914
 915    /* draw quad */
 916    buf = setup_vertex_data_tex(exa,
 917                                dx1, dy1,
 918                                dx2, dy2,
 919                                s0, t0, s1, t1,
 920                                0.0f);
 921
 922    if (buf) {
 923       util_draw_vertex_buffer(exa->pipe, buf, 0,
 924                               PIPE_PRIM_TRIANGLE_FAN,
 925                               4,  /* verts */
 926                               2); /* attribs/vert */
 927
 928       pipe_buffer_reference(&buf, NULL);
 929    }
 930
 931    /* restore state we changed */
 932    cso_restore_blend(exa->cso);
 933    cso_restore_samplers(exa->cso);
 934    cso_restore_sampler_textures(exa->cso);
 935    cso_restore_framebuffer(exa->cso);
 936    cso_restore_vertex_shader(exa->cso);
 937    cso_restore_fragment_shader(exa->cso);
 938    cso_restore_viewport(exa->cso);
 939
 940    pipe_surface_reference(&dst_surf, NULL);
 941 }
 942
 943
 944 static struct pipe_texture *
 945 create_sampler_texture(struct exa_context *ctx,
 946                        struct pipe_texture *src)
 947 {
 948    enum pipe_format format;
 949    struct pipe_context *pipe = ctx->pipe;
 950    struct pipe_screen *screen = pipe->screen;
 951    struct pipe_texture *pt;
 952    struct pipe_texture templ;
 953
 954    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 955
 956    /* the coming in texture should already have that invariance */
 957    debug_assert(screen->is_format_supported(screen, src->format,
 958                                             PIPE_TEXTURE_2D,
 959                                             PIPE_TEXTURE_USAGE_SAMPLER, 0));
 960
 961    format = src->format;
 962
 963    memset(&templ, 0, sizeof(templ));
 964    templ.target = PIPE_TEXTURE_2D;
 965    templ.format = format;
 966    templ.last_level = 0;
 967    templ.width[0] = src->width[0];
 968    templ.height[0] = src->height[0];
 969    templ.depth[0] = 1;
 970    pf_get_block(format, &templ.block);
 971    templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
 972
 973    pt = screen->texture_create(screen, &templ);
 974
 975    debug_assert(!pt || pipe_is_referenced(&pt->reference));
 976
 977    if (!pt)
 978       return NULL;
 979
 980    {
 981       /* copy source framebuffer surface into texture */
 982       struct pipe_surface *ps_read = screen->get_tex_surface(
 983          screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
 984       struct pipe_surface *ps_tex = screen->get_tex_surface(
 985          screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
 986       pipe->surface_copy(pipe,
 987                          ps_tex, /* dest */
 988                          0, 0, /* destx/y */
 989                          ps_read,
 990                          0, 0, src->width[0], src->height[0]);
 991       pipe_surface_reference(&ps_read, NULL);
 992       pipe_surface_reference(&ps_tex, NULL);
 993    }
 994
 995    return pt;
 996 }
 997
 998 void xorg_copy_pixmap(struct exa_context *ctx,
 999                       struct exa_pixmap_priv *dst_priv, int dx, int dy,
1000                       struct exa_pixmap_priv *src_priv, int sx, int sy,
1001                       int width, int height)
1002 {
1003    float dst_loc[4], src_loc[4];
1004    float dst_bounds[4], src_bounds[4];
1005    float src_shift[4], dst_shift[4], shift[4];
1006    struct pipe_texture *dst = dst_priv->tex;
1007    struct pipe_texture *src = src_priv->tex;
1008
1009    xorg_exa_finish(ctx);
1010
1011    dst_loc[0] = dx;
1012    dst_loc[1] = dy;
1013    dst_loc[2] = width;
1014    dst_loc[3] = height;
1015    dst_bounds[0] = 0.f;
1016    dst_bounds[1] = 0.f;
1017    dst_bounds[2] = dst->width[0];
1018    dst_bounds[3] = dst->height[0];
1019
1020    src_loc[0] = sx;
1021    src_loc[1] = sy;
1022    src_loc[2] = width;
1023    src_loc[3] = height;
1024    src_bounds[0] = 0.f;
1025    src_bounds[1] = 0.f;
1026    src_bounds[2] = src->width[0];
1027    src_bounds[3] = src->height[0];
1028
1029    bound_rect(src_loc, src_bounds, src_shift);
1030    bound_rect(dst_loc, dst_bounds, dst_shift);
1031    shift[0] = src_shift[0] - dst_shift[0];
1032    shift[1] = src_shift[1] - dst_shift[1];
1033
1034    if (shift[0] < 0)
1035       shift_rectx(src_loc, src_bounds, -shift[0]);
1036    else
1037       shift_rectx(dst_loc, dst_bounds, shift[0]);
1038
1039    if (shift[1] < 0)
1040       shift_recty(src_loc, src_bounds, -shift[1]);
1041    else
1042       shift_recty(dst_loc, dst_bounds, shift[1]);
1043
1044    sync_size(src_loc, dst_loc);
1045
1046    if (src_loc[2] >= 0 && src_loc[3] >= 0 &&
1047        dst_loc[2] >= 0 && dst_loc[3] >= 0) {
1048       struct pipe_texture *temp_src = src;
1049
1050       if (src == dst)
1051          temp_src = create_sampler_texture(ctx, src);
1052
1053       renderer_copy_texture(ctx,
1054                             temp_src,
1055                             src_loc[0],
1056                             src_loc[1],
1057                             src_loc[0] + src_loc[2],
1058                             src_loc[1] + src_loc[3],
1059                             dst,
1060                             dst_loc[0],
1061                             dst_loc[1],
1062                             dst_loc[0] + dst_loc[2],
1063                             dst_loc[1] + dst_loc[3]);
1064
1065       if (src == dst)
1066          pipe_texture_reference(&temp_src, NULL);
1067    }
1068 }
1069