src/gallium/drivers/r300/r300_texture.h

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #ifndef R300_TEXTURE_H
  24 #define R300_TEXTURE_H
  25
  26 #include "pipe/p_video_state.h"
  27
  28 #include "r300_reg.h"
  29
  30 struct r300_texture;
  31
  32 void r300_init_screen_texture_functions(struct pipe_screen* screen);
  33
  34 unsigned r300_texture_get_stride(struct r300_screen* screen,
  35                                  struct r300_texture* tex, unsigned level);
  36
  37 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  38                                  unsigned zslice, unsigned face);
  39
  40 /* Translate a pipe_format into a useful texture format for sampling.
  41  *
  42  * R300_EASY_TX_FORMAT swizzles the texture.
  43  * Note the signature of R300_EASY_TX_FORMAT:
  44  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
  45  *
  46  * The FORMAT specifies how the texture sampler will treat the texture, and
  47  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
  48 static INLINE uint32_t r300_translate_texformat(enum pipe_format format)
  49 {
  50     switch (format) {
  51         /* X8 */
  52         case PIPE_FORMAT_A8_UNORM:
  53             return R300_EASY_TX_FORMAT(ZERO, ZERO, ZERO, X, X8);
  54         case PIPE_FORMAT_I8_UNORM:
  55             return R300_EASY_TX_FORMAT(X, X, X, X, X8);
  56         case PIPE_FORMAT_L8_UNORM:
  57             return R300_EASY_TX_FORMAT(X, X, X, ONE, X8);
  58         /* X16 */
  59         case PIPE_FORMAT_R16_UNORM:
  60         case PIPE_FORMAT_Z16_UNORM:
  61             return R300_EASY_TX_FORMAT(X, X, X, X, X16);
  62         case PIPE_FORMAT_R16_SNORM:
  63             return R300_EASY_TX_FORMAT(X, X, X, X, X16) |
  64                 R300_TX_FORMAT_SIGNED;
  65         /* Y8X8 */
  66         case PIPE_FORMAT_A8L8_UNORM:
  67             return R300_EASY_TX_FORMAT(X, X, X, Y, Y8X8);
  68         /* W8Z8Y8X8 */
  69         case PIPE_FORMAT_A8R8G8B8_UNORM:
  70             return R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8);
  71         case PIPE_FORMAT_R8G8B8A8_UNORM:
  72             return R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8);
  73         case PIPE_FORMAT_X8R8G8B8_UNORM:
  74             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, W8Z8Y8X8);
  75         case PIPE_FORMAT_R8G8B8X8_UNORM:
  76             return R300_EASY_TX_FORMAT(Y, Z, ONE, X, W8Z8Y8X8);
  77         case PIPE_FORMAT_A8R8G8B8_SRGB:
  78             return R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8) |
  79                 R300_TX_FORMAT_GAMMA;
  80         case PIPE_FORMAT_R8G8B8A8_SRGB:
  81             return R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8) |
  82                 R300_TX_FORMAT_GAMMA;
  83         /* DXT1 */
  84         case PIPE_FORMAT_DXT1_RGB:
  85             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, DXT1);
  86         case PIPE_FORMAT_DXT1_RGBA:
  87             return R300_EASY_TX_FORMAT(X, Y, Z, W, DXT1);
  88         /* DXT3 */
  89         case PIPE_FORMAT_DXT3_RGBA:
  90             return R300_EASY_TX_FORMAT(X, Y, Z, W, DXT3);
  91         /* DXT5 */
  92         case PIPE_FORMAT_DXT5_RGBA:
  93             return R300_EASY_TX_FORMAT(Y, Z, W, X, DXT5);
  94         /* YVYU422 */
  95         case PIPE_FORMAT_YCBCR:
  96             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) |
  97                 R300_TX_FORMAT_YUV_TO_RGB;
  98         /* W24_FP */
  99         case PIPE_FORMAT_Z24S8_UNORM:
 100         case PIPE_FORMAT_Z24X8_UNORM:
 101             return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
 102
 103         default:
 104             debug_printf("r300: Implementation error: "
 105                 "Got unsupported texture format %s in %s\n",
 106                 pf_name(format), __FUNCTION__);
 107             assert(0);
 108             break;
 109     }
 110     return 0;
 111 }
 112
 113 struct r300_video_surface
 114 {
 115     struct pipe_video_surface   base;
 116     struct pipe_texture         *tex;
 117 };
 118
 119 static INLINE struct r300_video_surface *
 120 r300_video_surface(struct pipe_video_surface *pvs)
 121 {
 122     return (struct r300_video_surface *)pvs;
 123 }
 124
 125 #ifndef R300_WINSYS_H
 126
 127 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 128                                 struct pipe_texture* texture,
 129                                 struct pipe_buffer** buffer,
 130                                 unsigned* stride);
 131
 132 #endif /* R300_WINSYS_H */
 133
 134 #endif /* R300_TEXTURE_H */