src/gallium/drivers/svga/svga_format.c

   1 /**********************************************************
   2  * Copyright 2011 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26
  27 #include "pipe/p_format.h"
  28 #include "util/u_debug.h"
  29 #include "util/u_memory.h"
  30
  31 #include "svga_winsys.h"
  32 #include "svga_screen.h"
  33 #include "svga_format.h"
  34
  35
  36 /*
  37  * Translate from gallium format to SVGA3D format.
  38  */
  39 SVGA3dSurfaceFormat
  40 svga_translate_format(struct svga_screen *ss,
  41                       enum pipe_format format,
  42                       unsigned bind)
  43 {
  44    switch(format) {
  45
  46    case PIPE_FORMAT_B8G8R8A8_UNORM:
  47       return SVGA3D_A8R8G8B8;
  48    case PIPE_FORMAT_B8G8R8X8_UNORM:
  49       return SVGA3D_X8R8G8B8;
  50
  51    /* sRGB required for GL2.1 */
  52    case PIPE_FORMAT_B8G8R8A8_SRGB:
  53       return SVGA3D_A8R8G8B8;
  54    case PIPE_FORMAT_DXT1_SRGB:
  55    case PIPE_FORMAT_DXT1_SRGBA:
  56       return SVGA3D_DXT1;
  57    case PIPE_FORMAT_DXT3_SRGBA:
  58       return SVGA3D_DXT3;
  59    case PIPE_FORMAT_DXT5_SRGBA:
  60       return SVGA3D_DXT5;
  61
  62    case PIPE_FORMAT_B5G6R5_UNORM:
  63       return SVGA3D_R5G6B5;
  64    case PIPE_FORMAT_B5G5R5A1_UNORM:
  65       return SVGA3D_A1R5G5B5;
  66    case PIPE_FORMAT_B4G4R4A4_UNORM:
  67       return SVGA3D_A4R4G4B4;
  68
  69    case PIPE_FORMAT_R16G16B16A16_UNORM:
  70       return SVGA3D_A16B16G16R16;
  71
  72    case PIPE_FORMAT_Z16_UNORM:
  73       return bind & PIPE_BIND_SAMPLER_VIEW ? ss->depth.z16 : SVGA3D_Z_D16;
  74    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
  75       return bind & PIPE_BIND_SAMPLER_VIEW ? ss->depth.s8z24 : SVGA3D_Z_D24S8;
  76    case PIPE_FORMAT_X8Z24_UNORM:
  77       return bind & PIPE_BIND_SAMPLER_VIEW ? ss->depth.x8z24 : SVGA3D_Z_D24X8;
  78
  79    case PIPE_FORMAT_A8_UNORM:
  80       return SVGA3D_ALPHA8;
  81    case PIPE_FORMAT_L8_UNORM:
  82       return SVGA3D_LUMINANCE8;
  83
  84    case PIPE_FORMAT_DXT1_RGB:
  85    case PIPE_FORMAT_DXT1_RGBA:
  86       return SVGA3D_DXT1;
  87    case PIPE_FORMAT_DXT3_RGBA:
  88       return SVGA3D_DXT3;
  89    case PIPE_FORMAT_DXT5_RGBA:
  90       return SVGA3D_DXT5;
  91
  92    /* Float formats (only 1, 2 and 4-component formats supported) */
  93    case PIPE_FORMAT_R32_FLOAT:
  94       return SVGA3D_R_S23E8;
  95    case PIPE_FORMAT_R32G32_FLOAT:
  96       return SVGA3D_RG_S23E8;
  97    case PIPE_FORMAT_R32G32B32A32_FLOAT:
  98       return SVGA3D_ARGB_S23E8;
  99    case PIPE_FORMAT_R16_FLOAT:
 100       return SVGA3D_R_S10E5;
 101    case PIPE_FORMAT_R16G16_FLOAT:
 102       return SVGA3D_RG_S10E5;
 103    case PIPE_FORMAT_R16G16B16A16_FLOAT:
 104       return SVGA3D_ARGB_S10E5;
 105
 106    case PIPE_FORMAT_Z32_UNORM:
 107       /* SVGA3D_Z_D32 is not yet unsupported */
 108       /* fall-through */
 109    default:
 110       return SVGA3D_FORMAT_INVALID;
 111    }
 112 }
 113
 114
 115 /*
 116  * Format capability description entry.
 117  */
 118 struct format_cap {
 119    SVGA3dSurfaceFormat format;
 120
 121    /*
 122     * Capability index corresponding to the format.
 123     */
 124    SVGA3dDevCapIndex index;
 125
 126    /*
 127     * Mask of supported SVGA3dFormatOp operations, to be inferred when the
 128     * capability is not explicitly present.
 129     */
 130    uint32 defaultOperations;
 131 };
 132
 133
 134 /*
 135  * Format capability description table.
 136  *
 137  * Ordererd by increasing SVGA3dSurfaceFormat value, but with gaps.
 138  */
 139 static const struct format_cap format_cap_table[] = {
 140    {
 141       SVGA3D_X8R8G8B8,
 142       SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8,
 143       SVGA3DFORMAT_OP_TEXTURE |
 144       SVGA3DFORMAT_OP_CUBETEXTURE |
 145       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 146       SVGA3DFORMAT_OP_DISPLAYMODE |
 147       SVGA3DFORMAT_OP_3DACCELERATION |
 148       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 149       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 150       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 151       SVGA3DFORMAT_OP_SRGBREAD |
 152       SVGA3DFORMAT_OP_SRGBWRITE |
 153       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 154       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 155    },
 156    {
 157       SVGA3D_A8R8G8B8,
 158       SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8,
 159       SVGA3DFORMAT_OP_TEXTURE |
 160       SVGA3DFORMAT_OP_CUBETEXTURE |
 161       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 162       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 163       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 164       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 165       SVGA3DFORMAT_OP_SRGBREAD |
 166       SVGA3DFORMAT_OP_SRGBWRITE |
 167       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 168       SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET |
 169       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 170    },
 171    {
 172       SVGA3D_R5G6B5,
 173       SVGA3D_DEVCAP_SURFACEFMT_R5G6B5,
 174       SVGA3DFORMAT_OP_TEXTURE |
 175       SVGA3DFORMAT_OP_CUBETEXTURE |
 176       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 177       SVGA3DFORMAT_OP_DISPLAYMODE |
 178       SVGA3DFORMAT_OP_3DACCELERATION |
 179       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 180       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 181       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 182       SVGA3DFORMAT_OP_SRGBREAD |
 183       SVGA3DFORMAT_OP_SRGBWRITE |
 184       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 185       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 186    },
 187    {
 188       SVGA3D_X1R5G5B5,
 189       SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5,
 190       SVGA3DFORMAT_OP_TEXTURE |
 191       SVGA3DFORMAT_OP_CUBETEXTURE |
 192       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 193       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 194       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 195       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 196       SVGA3DFORMAT_OP_SRGBREAD |
 197       SVGA3DFORMAT_OP_SRGBWRITE |
 198       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 199       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 200    },
 201    {
 202       SVGA3D_A1R5G5B5,
 203       SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5,
 204       SVGA3DFORMAT_OP_TEXTURE |
 205       SVGA3DFORMAT_OP_CUBETEXTURE |
 206       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 207       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 208       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 209       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 210       SVGA3DFORMAT_OP_SRGBREAD |
 211       SVGA3DFORMAT_OP_SRGBWRITE |
 212       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 213       SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET |
 214       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 215    },
 216    {
 217       SVGA3D_A4R4G4B4,
 218       SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4,
 219       SVGA3DFORMAT_OP_TEXTURE |
 220       SVGA3DFORMAT_OP_CUBETEXTURE |
 221       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 222       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 223       SVGA3DFORMAT_OP_SRGBREAD |
 224       SVGA3DFORMAT_OP_SRGBWRITE |
 225       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 226       SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET |
 227       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 228    },
 229    /*
 230     * SVGA3D_Z_D32 is not yet supported, and has no corresponding
 231     * SVGA3D_DEVCAP_xxx.
 232     */
 233    {
 234       SVGA3D_Z_D16,
 235       SVGA3D_DEVCAP_SURFACEFMT_Z_D16,
 236       SVGA3DFORMAT_OP_ZSTENCIL |
 237       SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
 238    },
 239    {
 240       SVGA3D_Z_D24S8,
 241       SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8,
 242       SVGA3DFORMAT_OP_ZSTENCIL |
 243       SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
 244    },
 245    {
 246       SVGA3D_Z_D15S1,
 247       SVGA3D_DEVCAP_MAX,
 248       SVGA3DFORMAT_OP_ZSTENCIL |
 249       SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
 250    },
 251    {
 252       SVGA3D_LUMINANCE8,
 253       SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8,
 254       SVGA3DFORMAT_OP_TEXTURE |
 255       SVGA3DFORMAT_OP_CUBETEXTURE |
 256       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 257       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 258    },
 259    {
 260       SVGA3D_LUMINANCE8_ALPHA8,
 261       SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8,
 262       SVGA3DFORMAT_OP_TEXTURE |
 263       SVGA3DFORMAT_OP_CUBETEXTURE |
 264       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 265       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 266    },
 267    /*
 268     * SVGA3D_LUMINANCE4_ALPHA4 is not supported, and has no corresponding
 269     * SVGA3D_DEVCAP_xxx.
 270     */
 271    {
 272       SVGA3D_LUMINANCE16,
 273       SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16,
 274       SVGA3DFORMAT_OP_TEXTURE |
 275       SVGA3DFORMAT_OP_CUBETEXTURE |
 276       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 277       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 278    },
 279    {
 280       SVGA3D_DXT1,
 281       SVGA3D_DEVCAP_SURFACEFMT_DXT1,
 282       SVGA3DFORMAT_OP_TEXTURE |
 283       SVGA3DFORMAT_OP_SRGBREAD |
 284       SVGA3DFORMAT_OP_CUBETEXTURE |
 285       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 286    },
 287    {
 288       SVGA3D_DXT2,
 289       SVGA3D_DEVCAP_SURFACEFMT_DXT2,
 290       SVGA3DFORMAT_OP_TEXTURE |
 291       SVGA3DFORMAT_OP_SRGBREAD |
 292       SVGA3DFORMAT_OP_CUBETEXTURE |
 293       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 294    },
 295    {
 296       SVGA3D_DXT3,
 297       SVGA3D_DEVCAP_SURFACEFMT_DXT3,
 298       SVGA3DFORMAT_OP_TEXTURE |
 299       SVGA3DFORMAT_OP_SRGBREAD |
 300       SVGA3DFORMAT_OP_CUBETEXTURE |
 301       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 302    },
 303    {
 304       SVGA3D_DXT4,
 305       SVGA3D_DEVCAP_SURFACEFMT_DXT4,
 306       SVGA3DFORMAT_OP_TEXTURE |
 307       SVGA3DFORMAT_OP_SRGBREAD |
 308       SVGA3DFORMAT_OP_CUBETEXTURE |
 309       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 310    },
 311    {
 312       SVGA3D_DXT5,
 313       SVGA3D_DEVCAP_SURFACEFMT_DXT5,
 314       SVGA3DFORMAT_OP_TEXTURE |
 315       SVGA3DFORMAT_OP_SRGBREAD |
 316       SVGA3DFORMAT_OP_CUBETEXTURE |
 317       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 318    },
 319    {
 320       SVGA3D_BUMPU8V8,
 321       SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8,
 322       SVGA3DFORMAT_OP_TEXTURE |
 323       SVGA3DFORMAT_OP_CUBETEXTURE |
 324       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 325       SVGA3DFORMAT_OP_BUMPMAP |
 326       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 327    },
 328    /*
 329     * SVGA3D_BUMPL6V5U5 is unsupported; it has no corresponding
 330     * SVGA3D_DEVCAP_xxx.
 331     */
 332    {
 333       SVGA3D_BUMPX8L8V8U8,
 334       SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8,
 335       SVGA3DFORMAT_OP_TEXTURE |
 336       SVGA3DFORMAT_OP_CUBETEXTURE |
 337       SVGA3DFORMAT_OP_BUMPMAP |
 338       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 339    },
 340    /*
 341     * SVGA3D_BUMPL8V8U8 is unsupported; it has no corresponding
 342     * SVGA3D_DEVCAP_xxx. SVGA3D_BUMPX8L8V8U8 should be used instead.
 343     */
 344    {
 345       SVGA3D_ARGB_S10E5,
 346       SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5,
 347       SVGA3DFORMAT_OP_TEXTURE |
 348       SVGA3DFORMAT_OP_CUBETEXTURE |
 349       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 350       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 351       SVGA3DFORMAT_OP_SRGBREAD |
 352       SVGA3DFORMAT_OP_SRGBWRITE |
 353       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 354       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 355    },
 356    {
 357       SVGA3D_ARGB_S23E8,
 358       SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8,
 359       SVGA3DFORMAT_OP_TEXTURE |
 360       SVGA3DFORMAT_OP_CUBETEXTURE |
 361       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 362       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 363       SVGA3DFORMAT_OP_SRGBREAD |
 364       SVGA3DFORMAT_OP_SRGBWRITE |
 365       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 366       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 367    },
 368    {
 369       SVGA3D_A2R10G10B10,
 370       SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10,
 371       SVGA3DFORMAT_OP_TEXTURE |
 372       SVGA3DFORMAT_OP_CUBETEXTURE |
 373       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 374       SVGA3DFORMAT_OP_CONVERT_TO_ARGB |
 375       SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB |
 376       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 377       SVGA3DFORMAT_OP_SRGBREAD |
 378       SVGA3DFORMAT_OP_SRGBWRITE |
 379       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 380       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 381    },
 382    /*
 383     * SVGA3D_V8U8 is unsupported; it has no corresponding
 384     * SVGA3D_DEVCAP_xxx. SVGA3D_BUMPU8V8 should be used instead.
 385     */
 386    {
 387       SVGA3D_Q8W8V8U8,
 388       SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8,
 389       SVGA3DFORMAT_OP_TEXTURE |
 390       SVGA3DFORMAT_OP_CUBETEXTURE |
 391       SVGA3DFORMAT_OP_BUMPMAP |
 392       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 393    },
 394    {
 395       SVGA3D_CxV8U8,
 396       SVGA3D_DEVCAP_SURFACEFMT_CxV8U8,
 397       SVGA3DFORMAT_OP_TEXTURE |
 398       SVGA3DFORMAT_OP_BUMPMAP |
 399       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 400    },
 401    /*
 402     * SVGA3D_X8L8V8U8 is unsupported; it has no corresponding
 403     * SVGA3D_DEVCAP_xxx. SVGA3D_BUMPX8L8V8U8 should be used instead.
 404     */
 405    {
 406       SVGA3D_A2W10V10U10,
 407       SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10,
 408       SVGA3DFORMAT_OP_TEXTURE |
 409       SVGA3DFORMAT_OP_BUMPMAP |
 410       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 411    },
 412    {
 413       SVGA3D_ALPHA8,
 414       SVGA3D_DEVCAP_SURFACEFMT_ALPHA8,
 415       SVGA3DFORMAT_OP_TEXTURE |
 416       SVGA3DFORMAT_OP_CUBETEXTURE |
 417       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 418       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 419    },
 420    {
 421       SVGA3D_R_S10E5,
 422       SVGA3D_DEVCAP_SURFACEFMT_R_S10E5,
 423       SVGA3DFORMAT_OP_TEXTURE |
 424       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 425       SVGA3DFORMAT_OP_CUBETEXTURE |
 426       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 427       SVGA3DFORMAT_OP_SRGBREAD |
 428       SVGA3DFORMAT_OP_SRGBWRITE |
 429       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 430       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 431    },
 432    {
 433       SVGA3D_R_S23E8,
 434       SVGA3D_DEVCAP_SURFACEFMT_R_S23E8,
 435       SVGA3DFORMAT_OP_TEXTURE |
 436       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 437       SVGA3DFORMAT_OP_CUBETEXTURE |
 438       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 439       SVGA3DFORMAT_OP_SRGBREAD |
 440       SVGA3DFORMAT_OP_SRGBWRITE |
 441       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 442       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 443    },
 444    {
 445       SVGA3D_RG_S10E5,
 446       SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5,
 447       SVGA3DFORMAT_OP_TEXTURE |
 448       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 449       SVGA3DFORMAT_OP_CUBETEXTURE |
 450       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 451       SVGA3DFORMAT_OP_SRGBREAD |
 452       SVGA3DFORMAT_OP_SRGBWRITE |
 453       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 454       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 455    },
 456    {
 457       SVGA3D_RG_S23E8,
 458       SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8,
 459       SVGA3DFORMAT_OP_TEXTURE |
 460       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 461       SVGA3DFORMAT_OP_CUBETEXTURE |
 462       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 463       SVGA3DFORMAT_OP_SRGBREAD |
 464       SVGA3DFORMAT_OP_SRGBWRITE |
 465       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 466       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 467    },
 468    /*
 469     * SVGA3D_BUFFER is a placeholder format for index/vertex buffers.
 470     */
 471    {
 472       SVGA3D_Z_D24X8,
 473       SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8,
 474       SVGA3DFORMAT_OP_ZSTENCIL |
 475       SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
 476    },
 477    {
 478       SVGA3D_V16U16,
 479       SVGA3D_DEVCAP_SURFACEFMT_V16U16,
 480       SVGA3DFORMAT_OP_TEXTURE |
 481       SVGA3DFORMAT_OP_CUBETEXTURE |
 482       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 483       SVGA3DFORMAT_OP_BUMPMAP |
 484       SVGA3DFORMAT_OP_OFFSCREENPLAIN
 485    },
 486    {
 487       SVGA3D_G16R16,
 488       SVGA3D_DEVCAP_SURFACEFMT_G16R16,
 489       SVGA3DFORMAT_OP_TEXTURE |
 490       SVGA3DFORMAT_OP_CUBETEXTURE |
 491       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 492       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 493       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 494       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 495    },
 496    {
 497       SVGA3D_A16B16G16R16,
 498       SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16,
 499       SVGA3DFORMAT_OP_TEXTURE |
 500       SVGA3DFORMAT_OP_CUBETEXTURE |
 501       SVGA3DFORMAT_OP_VOLUMETEXTURE |
 502       SVGA3DFORMAT_OP_OFFSCREENPLAIN |
 503       SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET |
 504       SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
 505    },
 506    {
 507       SVGA3D_UYVY,
 508       SVGA3D_DEVCAP_SURFACEFMT_UYVY,
 509       0
 510    },
 511    {
 512       SVGA3D_YUY2,
 513       SVGA3D_DEVCAP_SURFACEFMT_YUY2,
 514       0
 515    },
 516    {
 517       SVGA3D_NV12,
 518       SVGA3D_DEVCAP_SURFACEFMT_NV12,
 519       0
 520    },
 521    {
 522       SVGA3D_AYUV,
 523       SVGA3D_DEVCAP_SURFACEFMT_AYUV,
 524       0
 525    },
 526    {
 527       SVGA3D_Z_DF16,
 528       SVGA3D_DEVCAP_SURFACEFMT_Z_DF16,
 529       0
 530    },
 531    {
 532       SVGA3D_Z_DF24,
 533       SVGA3D_DEVCAP_SURFACEFMT_Z_DF24,
 534       0
 535    },
 536    {
 537       SVGA3D_Z_D24S8_INT,
 538       SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT,
 539       0
 540    },
 541 };
 542
 543
 544 /*
 545  * Get format capabilities from the host.  It takes in consideration
 546  * deprecated/unsupported formats, and formats which are implicitely assumed to
 547  * be supported when the host does not provide an explicit capability entry.
 548  */
 549 void
 550 svga_get_format_cap(struct svga_screen *ss,
 551                     SVGA3dSurfaceFormat format,
 552                     SVGA3dSurfaceFormatCaps *caps)
 553 {
 554    const struct format_cap *entry;
 555
 556    for (entry = format_cap_table; entry < format_cap_table + Elements(format_cap_table); ++entry) {
 557       if (entry->format == format) {
 558          struct svga_winsys_screen *sws = ss->sws;
 559          SVGA3dDevCapResult result;
 560
 561          if (sws->get_cap(sws, entry->index, &result)) {
 562             /* Explicitly advertised format */
 563             caps->value = result.u;
 564          } else {
 565             /* Implicitly advertised format -- use default caps */
 566             caps->value = entry->defaultOperations;
 567          }
 568
 569          return;
 570       }
 571    }
 572
 573    /* Unsupported format */
 574    caps->value = 0;
 575 }
 576
 577
 578 /**
 579  * Return block size and bytes per block for the given SVGA3D format.
 580  * block_width and block_height are one for uncompressed formats and
 581  * greater than one for compressed formats.
 582  * Note: we don't handle formats that are unsupported, according to
 583  * the format_cap_table above.
 584  */
 585 void
 586 svga_format_size(SVGA3dSurfaceFormat format,
 587                  unsigned *block_width,
 588                  unsigned *block_height,
 589                  unsigned *bytes_per_block)
 590 {
 591    *block_width = *block_height = 1;
 592
 593    switch (format) {
 594    case SVGA3D_X8R8G8B8:
 595    case SVGA3D_A8R8G8B8:
 596       *bytes_per_block = 4;
 597       return;
 598
 599    case SVGA3D_R5G6B5:
 600    case SVGA3D_X1R5G5B5:
 601    case SVGA3D_A1R5G5B5:
 602    case SVGA3D_A4R4G4B4:
 603       *bytes_per_block = 2;
 604       return;
 605
 606    case SVGA3D_Z_D32:
 607       *bytes_per_block = 4;
 608       return;
 609
 610    case SVGA3D_Z_D16:
 611       *bytes_per_block = 2;
 612       return;
 613
 614    case SVGA3D_Z_D24S8:
 615       *bytes_per_block = 4;
 616       return;
 617
 618    case SVGA3D_Z_D15S1:
 619       *bytes_per_block = 2;
 620       return;
 621
 622    case SVGA3D_LUMINANCE8:
 623    case SVGA3D_LUMINANCE4_ALPHA4:
 624       *bytes_per_block = 1;
 625       return;
 626
 627    case SVGA3D_LUMINANCE16:
 628    case SVGA3D_LUMINANCE8_ALPHA8:
 629       *bytes_per_block = 2;
 630       return;
 631
 632    case SVGA3D_DXT1:
 633    case SVGA3D_DXT2:
 634       *block_width = *block_height = 4;
 635       *bytes_per_block = 8;
 636       return;
 637
 638    case SVGA3D_DXT3:
 639    case SVGA3D_DXT4:
 640    case SVGA3D_DXT5:
 641       *block_width = *block_height = 4;
 642       *bytes_per_block = 16;
 643       return;
 644
 645    case SVGA3D_BUMPU8V8:
 646    case SVGA3D_BUMPL6V5U5:
 647       *bytes_per_block = 2;
 648       return;
 649
 650    case SVGA3D_BUMPX8L8V8U8:
 651       *bytes_per_block = 4;
 652       return;
 653
 654    case SVGA3D_ARGB_S10E5:
 655       *bytes_per_block = 8;
 656       return;
 657
 658    case SVGA3D_ARGB_S23E8:
 659       *bytes_per_block = 16;
 660       return;
 661
 662    case SVGA3D_A2R10G10B10:
 663       *bytes_per_block = 4;
 664       return;
 665
 666    case SVGA3D_Q8W8V8U8:
 667       *bytes_per_block = 4;
 668       return;
 669
 670    case SVGA3D_CxV8U8:
 671       *bytes_per_block = 2;
 672       return;
 673
 674    case SVGA3D_X8L8V8U8:
 675    case SVGA3D_A2W10V10U10:
 676       *bytes_per_block = 4;
 677       return;
 678
 679    case SVGA3D_ALPHA8:
 680       *bytes_per_block = 1;
 681       return;
 682
 683    case SVGA3D_R_S10E5:
 684       *bytes_per_block = 2;
 685       return;
 686    case SVGA3D_R_S23E8:
 687       *bytes_per_block = 4;
 688       return;
 689    case SVGA3D_RG_S10E5:
 690       *bytes_per_block = 4;
 691       return;
 692    case SVGA3D_RG_S23E8:
 693       *bytes_per_block = 8;
 694       return;
 695
 696    case SVGA3D_BUFFER:
 697       *bytes_per_block = 1;
 698       return;
 699
 700    case SVGA3D_Z_D24X8:
 701       *bytes_per_block = 4;
 702       return;
 703
 704    case SVGA3D_V16U16:
 705       *bytes_per_block = 4;
 706       return;
 707
 708    case SVGA3D_G16R16:
 709       *bytes_per_block = 4;
 710       return;
 711
 712    case SVGA3D_A16B16G16R16:
 713       *bytes_per_block = 8;
 714       return;
 715
 716    case SVGA3D_Z_DF16:
 717       *bytes_per_block = 2;
 718       return;
 719    case SVGA3D_Z_DF24:
 720       *bytes_per_block = 4;
 721       return;
 722    case SVGA3D_Z_D24S8_INT:
 723       *bytes_per_block = 4;
 724       return;
 725
 726    default:
 727       debug_printf("format %u\n", (unsigned) format);
 728       assert(!"unexpected format in svga_format_size()");
 729       *bytes_per_block = 4;
 730    }
 731 }