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 #include "util/u_format.h"
  28
  29 #include "r300_reg.h"
  30
  31 struct r300_texture;
  32
  33 void r300_init_screen_texture_functions(struct pipe_screen* screen);
  34
  35 unsigned r300_texture_get_stride(struct r300_screen* screen,
  36                                  struct r300_texture* tex, unsigned level);
  37
  38 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  39                                  unsigned zslice, unsigned face);
  40
  41 void r300_texture_reinterpret_format(struct pipe_screen *screen,
  42                                      struct pipe_texture *tex,
  43                                      enum pipe_format new_format);
  44
  45 /* Translate a pipe_format into a useful texture format for sampling.
  46  *
  47  * R300_EASY_TX_FORMAT swizzles the texture.
  48  * Note the signature of R300_EASY_TX_FORMAT:
  49  *   R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
  50  *
  51  * The FORMAT specifies how the texture sampler will treat the texture, and
  52  * makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
  53 static INLINE uint32_t r300_translate_texformat(enum pipe_format format)
  54 {
  55     switch (format) {
  56         /* X8 */
  57         case PIPE_FORMAT_A8_UNORM:
  58             return R300_EASY_TX_FORMAT(ZERO, ZERO, ZERO, X, X8);
  59         case PIPE_FORMAT_I8_UNORM:
  60             return R300_EASY_TX_FORMAT(X, X, X, X, X8);
  61         case PIPE_FORMAT_L8_UNORM:
  62             return R300_EASY_TX_FORMAT(X, X, X, ONE, X8);
  63         case PIPE_FORMAT_L8_SRGB:
  64             return R300_EASY_TX_FORMAT(X, X, X, ONE, X8) |
  65                 R300_TX_FORMAT_GAMMA;
  66         /* X16 */
  67         case PIPE_FORMAT_A4R4G4B4_UNORM:
  68             return R300_EASY_TX_FORMAT(X, Y, Z, W, W4Z4Y4X4);
  69         case PIPE_FORMAT_R16_UNORM:
  70         case PIPE_FORMAT_Z16_UNORM:
  71             return R300_EASY_TX_FORMAT(X, X, X, X, X16);
  72         case PIPE_FORMAT_R16_SNORM:
  73             return R300_EASY_TX_FORMAT(X, X, X, X, X16) |
  74                 R300_TX_FORMAT_SIGNED;
  75         /* Z5Y6X5 */
  76         case PIPE_FORMAT_R5G6B5_UNORM:
  77             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, Z5Y6X5);
  78         /* W1Z5Y5X5*/
  79         case PIPE_FORMAT_A1R5G5B5_UNORM:
  80             return R300_EASY_TX_FORMAT(X, Y, Z, W, W1Z5Y5X5);
  81         /* Y8X8 */
  82         case PIPE_FORMAT_A8L8_UNORM:
  83             return R300_EASY_TX_FORMAT(X, X, X, Y, Y8X8);
  84         case PIPE_FORMAT_A8L8_SRGB:
  85             return R300_EASY_TX_FORMAT(X, X, X, Y, Y8X8) |
  86                 R300_TX_FORMAT_GAMMA;
  87         /* W8Z8Y8X8 */
  88         case PIPE_FORMAT_A8R8G8B8_UNORM:
  89             return R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8);
  90         case PIPE_FORMAT_R8G8B8A8_UNORM:
  91             return R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8);
  92         case PIPE_FORMAT_X8R8G8B8_UNORM:
  93             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, W8Z8Y8X8);
  94         case PIPE_FORMAT_R8G8B8X8_UNORM:
  95             return R300_EASY_TX_FORMAT(Y, Z, ONE, X, W8Z8Y8X8);
  96         case PIPE_FORMAT_A8R8G8B8_SRGB:
  97             return R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8) |
  98                 R300_TX_FORMAT_GAMMA;
  99         case PIPE_FORMAT_R8G8B8A8_SRGB:
 100             return R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8) |
 101                 R300_TX_FORMAT_GAMMA;
 102         /* DXT1 */
 103         case PIPE_FORMAT_DXT1_RGB:
 104             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, DXT1);
 105         case PIPE_FORMAT_DXT1_RGBA:
 106             return R300_EASY_TX_FORMAT(X, Y, Z, W, DXT1);
 107         /* DXT3 */
 108         case PIPE_FORMAT_DXT3_RGBA:
 109             return R300_EASY_TX_FORMAT(X, Y, Z, W, DXT3);
 110         /* DXT5 */
 111         case PIPE_FORMAT_DXT5_RGBA:
 112             return R300_EASY_TX_FORMAT(Y, Z, W, X, DXT5);
 113         /* YVYU422 */
 114         case PIPE_FORMAT_YCBCR:
 115             return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) |
 116                 R300_TX_FORMAT_YUV_TO_RGB;
 117         /* W24_FP */
 118         case PIPE_FORMAT_Z24S8_UNORM:
 119         case PIPE_FORMAT_Z24X8_UNORM:
 120             return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
 121
 122         default:
 123             debug_printf("r300: Implementation error: "
 124                 "Got unsupported texture format %s in %s\n",
 125                 util_format_name(format), __FUNCTION__);
 126             assert(0);
 127             break;
 128     }
 129     return 0;
 130 }
 131
 132 struct r300_video_surface
 133 {
 134     struct pipe_video_surface   base;
 135     struct pipe_texture         *tex;
 136 };
 137
 138 static INLINE struct r300_video_surface *
 139 r300_video_surface(struct pipe_video_surface *pvs)
 140 {
 141     return (struct r300_video_surface *)pvs;
 142 }
 143
 144 #ifndef R300_WINSYS_H
 145
 146 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 147                                 struct pipe_texture* texture,
 148                                 struct pipe_buffer** buffer,
 149                                 unsigned* stride);
 150
 151 #endif /* R300_WINSYS_H */
 152
 153 #endif /* R300_TEXTURE_H */