src/gallium/state_trackers/xorg/xorg_composite.c

   1 #include "xorg_composite.h"
   2
   3 #include "xorg_renderer.h"
   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
  10 #include "pipe/p_inlines.h"
  11
  12 struct xorg_composite_blend {
  13    int op:8;
  14
  15    unsigned rgb_src_factor:5;    /**< PIPE_BLENDFACTOR_x */
  16    unsigned alpha_src_factor:5;  /**< PIPE_BLENDFACTOR_x */
  17
  18    unsigned rgb_dst_factor:5;    /**< PIPE_BLENDFACTOR_x */
  19    unsigned alpha_dst_factor:5;  /**< PIPE_BLENDFACTOR_x */
  20 };
  21
  22 #define BLEND_OP_OVER 3
  23 static const struct xorg_composite_blend xorg_blends[] = {
  24    { PictOpClear,
  25      PIPE_BLENDFACTOR_CONST_COLOR, PIPE_BLENDFACTOR_CONST_ALPHA,
  26      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
  27
  28    { PictOpSrc,
  29      PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE,
  30      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
  31
  32    { PictOpDst,
  33      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO,
  34      PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE },
  35
  36    { PictOpOver,
  37      PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
  38      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
  39
  40    { PictOpOverReverse,
  41      PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
  42      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
  43 };
  44
  45
  46 static INLINE void
  47 pixel_to_float4(Pixel pixel, float *color)
  48 {
  49    CARD32           r, g, b, a;
  50
  51    a = (pixel >> 24) & 0xff;
  52    r = (pixel >> 16) & 0xff;
  53    g = (pixel >>  8) & 0xff;
  54    b = (pixel >>  0) & 0xff;
  55    color[0] = ((float)r) / 255.;
  56    color[1] = ((float)g) / 255.;
  57    color[2] = ((float)b) / 255.;
  58    color[3] = ((float)a) / 255.;
  59 }
  60
  61 struct acceleration_info {
  62    int op : 16;
  63    int with_mask : 1;
  64    int component_alpha : 1;
  65 };
  66 static const struct acceleration_info accelerated_ops[] = {
  67    {PictOpClear,       1, 0},
  68    {PictOpSrc,         1, 0},
  69    {PictOpDst,         1, 0},
  70    {PictOpOver,        1, 0},
  71    {PictOpOverReverse, 1, 0},
  72    {PictOpIn,          1, 0},
  73    {PictOpInReverse,   1, 0},
  74    {PictOpOut,         1, 0},
  75    {PictOpOutReverse,  1, 0},
  76    {PictOpAtop,        1, 0},
  77    {PictOpAtopReverse, 1, 0},
  78    {PictOpXor,         1, 0},
  79    {PictOpAdd,         1, 0},
  80    {PictOpSaturate,    1, 0},
  81 };
  82
  83 static struct xorg_composite_blend
  84 blend_for_op(int op)
  85 {
  86    const int num_blends =
  87       sizeof(xorg_blends)/sizeof(struct xorg_composite_blend);
  88    int i;
  89
  90    for (i = 0; i < num_blends; ++i) {
  91       if (xorg_blends[i].op == op)
  92          return xorg_blends[i];
  93    }
  94    return xorg_blends[BLEND_OP_OVER];
  95 }
  96
  97 static INLINE int
  98 render_repeat_to_gallium(int mode)
  99 {
 100    switch(mode) {
 101    case RepeatNone:
 102       return PIPE_TEX_WRAP_CLAMP;
 103    case RepeatNormal:
 104       return PIPE_TEX_WRAP_REPEAT;
 105    case RepeatReflect:
 106       return PIPE_TEX_WRAP_MIRROR_REPEAT;
 107    case RepeatPad:
 108       return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 109    default:
 110       debug_printf("Unsupported repeat mode\n");
 111    }
 112    return PIPE_TEX_WRAP_REPEAT;
 113 }
 114
 115 boolean xorg_composite_accelerated(int op,
 116                                    PicturePtr pSrcPicture,
 117                                    PicturePtr pMaskPicture,
 118                                    PicturePtr pDstPicture)
 119 {
 120    ScreenPtr pScreen = pDstPicture->pDrawable->pScreen;
 121    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
 122    modesettingPtr ms = modesettingPTR(pScrn);
 123    unsigned i;
 124    unsigned accel_ops_count =
 125       sizeof(accelerated_ops)/sizeof(struct acceleration_info);
 126
 127    if (pSrcPicture->pSourcePict) {
 128       /* Gradients not yet supported */
 129       if (pSrcPicture->pSourcePict->type != SourcePictTypeSolidFill)
 130          XORG_FALLBACK("gradients not yet supported");
 131
 132       /* Solid source with mask not yet handled properly */
 133       if (pMaskPicture)
 134          XORG_FALLBACK("solid source with mask not yet handled properly");
 135    }
 136
 137    for (i = 0; i < accel_ops_count; ++i) {
 138       if (op == accelerated_ops[i].op) {
 139          /* Check for unsupported component alpha */
 140          if ((pSrcPicture->componentAlpha &&
 141               !accelerated_ops[i].component_alpha) ||
 142              (pMaskPicture &&
 143               (!accelerated_ops[i].with_mask ||
 144                (pMaskPicture->componentAlpha &&
 145                 !accelerated_ops[i].component_alpha))))
 146             XORG_FALLBACK("component alpha unsupported");
 147          return TRUE;
 148       }
 149    }
 150    XORG_FALLBACK("unsupported operation");
 151 }
 152
 153 static void
 154 bind_blend_state(struct exa_context *exa, int op,
 155                  PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 156 {
 157    struct xorg_composite_blend blend_opt;
 158    struct pipe_blend_state blend;
 159
 160    blend_opt = blend_for_op(op);
 161
 162    memset(&blend, 0, sizeof(struct pipe_blend_state));
 163    blend.blend_enable = 1;
 164    blend.colormask |= PIPE_MASK_R;
 165    blend.colormask |= PIPE_MASK_G;
 166    blend.colormask |= PIPE_MASK_B;
 167    blend.colormask |= PIPE_MASK_A;
 168
 169    blend.rgb_src_factor   = blend_opt.rgb_src_factor;
 170    blend.alpha_src_factor = blend_opt.alpha_src_factor;
 171    blend.rgb_dst_factor   = blend_opt.rgb_dst_factor;
 172    blend.alpha_dst_factor = blend_opt.alpha_dst_factor;
 173
 174    cso_set_blend(exa->renderer->cso, &blend);
 175 }
 176
 177
 178 static void
 179 bind_shaders(struct exa_context *exa, int op,
 180              PicturePtr pSrcPicture, PicturePtr pMaskPicture)
 181 {
 182    unsigned vs_traits = 0, fs_traits = 0;
 183    struct xorg_shader shader;
 184
 185    exa->has_solid_color = FALSE;
 186
 187    if (pSrcPicture) {
 188       if (pSrcPicture->pSourcePict) {
 189          if (pSrcPicture->pSourcePict->type == SourcePictTypeSolidFill) {
 190             fs_traits |= FS_SOLID_FILL;
 191             vs_traits |= VS_SOLID_FILL;
 192             debug_assert(pSrcPicture->format == PICT_a8r8g8b8);
 193             pixel_to_float4(pSrcPicture->pSourcePict->solidFill.color,
 194                             exa->solid_color);
 195             exa->has_solid_color = TRUE;
 196          } else {
 197             debug_assert("!gradients not supported");
 198          }
 199       } else {
 200          fs_traits |= FS_COMPOSITE;
 201          vs_traits |= VS_COMPOSITE;
 202       }
 203    }
 204
 205    if (pMaskPicture) {
 206       vs_traits |= VS_MASK;
 207       fs_traits |= FS_MASK;
 208    }
 209
 210    shader = xorg_shaders_get(exa->renderer->shaders, vs_traits, fs_traits);
 211    cso_set_vertex_shader_handle(exa->renderer->cso, shader.vs);
 212    cso_set_fragment_shader_handle(exa->renderer->cso, shader.fs);
 213 }
 214
 215
 216 static void
 217 bind_samplers(struct exa_context *exa, int op,
 218               PicturePtr pSrcPicture, PicturePtr pMaskPicture,
 219               PicturePtr pDstPicture,
 220               struct exa_pixmap_priv *pSrc,
 221               struct exa_pixmap_priv *pMask,
 222               struct exa_pixmap_priv *pDst)
 223 {
 224    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 225    struct pipe_sampler_state src_sampler, mask_sampler;
 226
 227    exa->num_bound_samplers = 0;
 228
 229    memset(&src_sampler, 0, sizeof(struct pipe_sampler_state));
 230    memset(&mask_sampler, 0, sizeof(struct pipe_sampler_state));
 231
 232    if ((pSrc && exa->pipe->is_texture_referenced(exa->pipe, pSrc->tex, 0, 0) &
 233         PIPE_REFERENCED_FOR_WRITE) ||
 234        (pMask && exa->pipe->is_texture_referenced(exa->pipe, pMask->tex, 0, 0) &
 235         PIPE_REFERENCED_FOR_WRITE))
 236       exa->pipe->flush(exa->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 237
 238    if (pSrcPicture && pSrc) {
 239       unsigned src_wrap = render_repeat_to_gallium(
 240          pSrcPicture->repeatType);
 241       src_sampler.wrap_s = src_wrap;
 242       src_sampler.wrap_t = src_wrap;
 243       src_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 244       src_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 245       src_sampler.normalized_coords = 1;
 246       samplers[0] = &src_sampler;
 247       exa->bound_textures[0] = pSrc->tex;
 248       ++exa->num_bound_samplers;
 249    }
 250
 251    if (pMaskPicture && pMask) {
 252       unsigned mask_wrap = render_repeat_to_gallium(
 253          pMaskPicture->repeatType);
 254       mask_sampler.wrap_s = mask_wrap;
 255       mask_sampler.wrap_t = mask_wrap;
 256       mask_sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 257       mask_sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 258       mask_sampler.normalized_coords = 1;
 259       samplers[1] = &mask_sampler;
 260       exa->bound_textures[1] = pMask->tex;
 261       ++exa->num_bound_samplers;
 262    }
 263
 264    cso_set_samplers(exa->renderer->cso, exa->num_bound_samplers,
 265                     (const struct pipe_sampler_state **)samplers);
 266    cso_set_sampler_textures(exa->renderer->cso, exa->num_bound_samplers,
 267                             exa->bound_textures);
 268 }
 269
 270 static void
 271 setup_vs_constant_buffer(struct exa_context *exa,
 272                          int width, int height)
 273 {
 274    const int param_bytes = 8 * sizeof(float);
 275    float vs_consts[8] = {
 276       2.f/width, 2.f/height, 1, 1,
 277       -1, -1, 0, 0
 278    };
 279    renderer_set_constants(exa->renderer, PIPE_SHADER_VERTEX,
 280                           vs_consts, param_bytes);
 281 }
 282
 283
 284 static void
 285 setup_fs_constant_buffer(struct exa_context *exa)
 286 {
 287    const int param_bytes = 4 * sizeof(float);
 288    const float fs_consts[8] = {
 289       0, 0, 0, 1,
 290    };
 291    renderer_set_constants(exa->renderer, PIPE_SHADER_FRAGMENT,
 292                           fs_consts, param_bytes);
 293 }
 294
 295 static void
 296 setup_constant_buffers(struct exa_context *exa, struct exa_pixmap_priv *pDst)
 297 {
 298    int width = pDst->tex->width[0];
 299    int height = pDst->tex->height[0];
 300
 301    setup_vs_constant_buffer(exa, width, height);
 302    setup_fs_constant_buffer(exa);
 303 }
 304
 305 boolean xorg_composite_bind_state(struct exa_context *exa,
 306                                   int op,
 307                                   PicturePtr pSrcPicture,
 308                                   PicturePtr pMaskPicture,
 309                                   PicturePtr pDstPicture,
 310                                   struct exa_pixmap_priv *pSrc,
 311                                   struct exa_pixmap_priv *pMask,
 312                                   struct exa_pixmap_priv *pDst)
 313 {
 314    renderer_bind_framebuffer(exa->renderer, pDst);
 315    renderer_bind_viewport(exa->renderer, pDst);
 316    bind_blend_state(exa, op, pSrcPicture, pMaskPicture);
 317    renderer_bind_rasterizer(exa->renderer);
 318    bind_shaders(exa, op, pSrcPicture, pMaskPicture);
 319    bind_samplers(exa, op, pSrcPicture, pMaskPicture,
 320                  pDstPicture, pSrc, pMask, pDst);
 321    setup_constant_buffers(exa, pDst);
 322
 323    return FALSE;
 324 }
 325
 326 void xorg_composite(struct exa_context *exa,
 327                     struct exa_pixmap_priv *dst,
 328                     int srcX, int srcY, int maskX, int maskY,
 329                     int dstX, int dstY, int width, int height)
 330 {
 331    if (exa->num_bound_samplers == 0 ) { /* solid fill */
 332       renderer_draw_solid_rect(exa->renderer,
 333                                dstX, dstY, dstX + width, dstY + height,
 334                                exa->solid_color);
 335    } else {
 336       int pos[6] = {srcX, srcY, maskX, maskY, dstX, dstY};
 337       renderer_draw_textures(exa->renderer,
 338                              pos, width, height,
 339                              exa->bound_textures,
 340                              exa->num_bound_samplers);
 341    }
 342 }
 343
 344 boolean xorg_solid_bind_state(struct exa_context *exa,
 345                               struct exa_pixmap_priv *pixmap,
 346                               Pixel fg)
 347 {
 348    unsigned vs_traits, fs_traits;
 349    struct xorg_shader shader;
 350
 351    pixel_to_float4(fg, exa->solid_color);
 352    exa->has_solid_color = TRUE;
 353
 354    exa->solid_color[3] = 1.f;
 355
 356 #if 0
 357    debug_printf("Color Pixel=(%d, %d, %d, %d), RGBA=(%f, %f, %f, %f)\n",
 358                 (fg >> 24) & 0xff, (fg >> 16) & 0xff,
 359                 (fg >> 8) & 0xff,  (fg >> 0) & 0xff,
 360                 exa->solid_color[0], exa->solid_color[1],
 361                 exa->solid_color[2], exa->solid_color[3]);
 362 #endif
 363
 364    vs_traits = VS_SOLID_FILL;
 365    fs_traits = FS_SOLID_FILL;
 366
 367    renderer_bind_framebuffer(exa->renderer, pixmap);
 368    renderer_bind_viewport(exa->renderer, pixmap);
 369    renderer_bind_rasterizer(exa->renderer);
 370    bind_blend_state(exa, PictOpSrc, NULL, NULL);
 371    setup_constant_buffers(exa, pixmap);
 372
 373    shader = xorg_shaders_get(exa->renderer->shaders, vs_traits, fs_traits);
 374    cso_set_vertex_shader_handle(exa->renderer->cso, shader.vs);
 375    cso_set_fragment_shader_handle(exa->renderer->cso, shader.fs);
 376
 377    return TRUE;
 378 }
 379
 380 void xorg_solid(struct exa_context *exa,
 381                 struct exa_pixmap_priv *pixmap,
 382                 int x0, int y0, int x1, int y1)
 383 {
 384    renderer_draw_solid_rect(exa->renderer,
 385                             x0, y0, x1, y1, exa->solid_color);
 386 }
 387