src/mesa/drivers/dri/i965/brw_tex.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #include "glheader.h"
  34 #include "mtypes.h"
  35 #include "imports.h"
  36 #include "simple_list.h"
  37 #include "enums.h"
  38 #include "image.h"
  39 #include "texstore.h"
  40 #include "texformat.h"
  41 #include "texmem.h"
  42
  43 #include "intel_ioctl.h"
  44 #include "brw_context.h"
  45 #include "brw_defines.h"
  46
  47
  48
  49
  50 static const struct gl_texture_format *
  51 brwChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
  52                          GLenum format, GLenum type )
  53 {
  54    switch ( internalFormat ) {
  55    case 4:
  56    case GL_RGBA:
  57    case GL_COMPRESSED_RGBA:
  58    case GL_RGBA8:
  59    case GL_RGB10_A2:
  60    case GL_RGBA12:
  61    case GL_RGBA16:
  62    case GL_RGBA4:
  63    case GL_RGBA2:
  64    case GL_RGB5_A1:
  65       return &_mesa_texformat_argb8888;
  66 /*       return &_mesa_texformat_rgba8888_rev; */
  67
  68    case 3:
  69    case GL_RGB:
  70    case GL_COMPRESSED_RGB:
  71    case GL_RGB8:
  72    case GL_RGB10:
  73    case GL_RGB12:
  74    case GL_RGB16:
  75    case GL_RGB5:
  76    case GL_RGB4:
  77    case GL_R3_G3_B2:
  78 /*       return &_mesa_texformat_rgb888; */
  79       return &_mesa_texformat_argb8888;
  80
  81    case GL_ALPHA:
  82    case GL_ALPHA4:
  83    case GL_ALPHA8:
  84    case GL_ALPHA12:
  85    case GL_ALPHA16:
  86    case GL_COMPRESSED_ALPHA:
  87       return &_mesa_texformat_a8;
  88
  89    case 1:
  90    case GL_LUMINANCE:
  91    case GL_LUMINANCE4:
  92    case GL_LUMINANCE8:
  93    case GL_LUMINANCE12:
  94    case GL_LUMINANCE16:
  95    case GL_COMPRESSED_LUMINANCE:
  96       return &_mesa_texformat_l8;
  97
  98    case 2:
  99    case GL_LUMINANCE_ALPHA:
 100    case GL_LUMINANCE4_ALPHA4:
 101    case GL_LUMINANCE6_ALPHA2:
 102    case GL_LUMINANCE8_ALPHA8:
 103    case GL_LUMINANCE12_ALPHA4:
 104    case GL_LUMINANCE12_ALPHA12:
 105    case GL_LUMINANCE16_ALPHA16:
 106    case GL_COMPRESSED_LUMINANCE_ALPHA:
 107       return &_mesa_texformat_al88;
 108
 109    case GL_INTENSITY:
 110    case GL_INTENSITY4:
 111    case GL_INTENSITY8:
 112    case GL_INTENSITY12:
 113    case GL_INTENSITY16:
 114    case GL_COMPRESSED_INTENSITY:
 115       return &_mesa_texformat_i8;
 116
 117    case GL_YCBCR_MESA:
 118       if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
 119           type == GL_UNSIGNED_BYTE)
 120          return &_mesa_texformat_ycbcr;
 121       else
 122          return &_mesa_texformat_ycbcr_rev;
 123
 124    case GL_COMPRESSED_RGB_FXT1_3DFX:
 125    case GL_COMPRESSED_RGBA_FXT1_3DFX:
 126      return &_mesa_texformat_rgb_fxt1;
 127
 128    case GL_RGB_S3TC:
 129    case GL_RGB4_S3TC:
 130    case GL_RGBA_S3TC:
 131    case GL_RGBA4_S3TC:
 132    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 133    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 134    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 135    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 136      return &_mesa_texformat_rgb_dxt1; /* there is no rgba support? */
 137
 138    case GL_DEPTH_COMPONENT:
 139    case GL_DEPTH_COMPONENT16:
 140    case GL_DEPTH_COMPONENT24:
 141    case GL_DEPTH_COMPONENT32:
 142       return &_mesa_texformat_z16;
 143
 144    default:
 145       fprintf(stderr, "unexpected texture format %s in %s\n",
 146               _mesa_lookup_enum_by_nr(internalFormat),
 147               __FUNCTION__);
 148       return NULL;
 149    }
 150
 151    return NULL; /* never get here */
 152 }
 153
 154
 155 void brwInitTextureFuncs( struct dd_function_table *functions )
 156 {
 157    functions->ChooseTextureFormat = brwChooseTextureFormat;
 158 }