reactos/dll/3rdparty/dxtn/wrapper.c

   1 /*
   2  * Texture compression
   3  * Version:  1.0
   4  *
   5  * Copyright (C) 2004  Daniel Borca   All Rights Reserved.
   6  *
   7  * this is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * this is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Make; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22
  23 #include <assert.h>
  24
  25 #include "types.h"
  26 #include "internal.h"
  27 #include "dxtn.h"
  28
  29
  30 #define GL_COMPRESSED_RGB_S3TC_DXT1_EXT   0x83F0
  31 #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT  0x83F1
  32 #define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT  0x83F2
  33 #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT  0x83F3
  34
  35
  36 TAPI void TAPIENTRY
  37 fetch_2d_texel_rgb_dxt1 (int texImage_RowStride,
  38                          const byte *texImage_Data,
  39                          int i, int j,
  40                          byte *texel)
  41 {
  42     dxt1_rgb_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
  43 }
  44
  45
  46 TAPI void TAPIENTRY
  47 fetch_2d_texel_rgba_dxt1 (int texImage_RowStride,
  48                           const byte *texImage_Data,
  49                           int i, int j,
  50                           byte *texel)
  51 {
  52     dxt1_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
  53 }
  54
  55
  56 TAPI void TAPIENTRY
  57 fetch_2d_texel_rgba_dxt3 (int texImage_RowStride,
  58                           const byte *texImage_Data,
  59                           int i, int j,
  60                           byte *texel)
  61 {
  62     dxt3_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
  63 }
  64
  65
  66 TAPI void TAPIENTRY
  67 fetch_2d_texel_rgba_dxt5 (int texImage_RowStride,
  68                           const byte *texImage_Data,
  69                           int i, int j,
  70                           byte *texel)
  71 {
  72     dxt5_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
  73 }
  74
  75
  76 TAPI void TAPIENTRY
  77 tx_compress_dxtn (int srccomps, int width, int height,
  78                   const byte *source, int destformat, byte *dest,
  79                   int destRowStride)
  80 {
  81     int srcRowStride = width * srccomps;
  82     int rv;
  83
  84     switch (destformat) {
  85         case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
  86             rv = dxt1_rgb_encode(width, height, srccomps,
  87                                  source, srcRowStride,
  88                                  dest, destRowStride);
  89             break;
  90         case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
  91             rv = dxt1_rgba_encode(width, height, srccomps,
  92                                   source, srcRowStride,
  93                                   dest, destRowStride);
  94             break;
  95         case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
  96             rv = dxt3_rgba_encode(width, height, srccomps,
  97                                   source, srcRowStride,
  98                                   dest, destRowStride);
  99             break;
 100         case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 101             rv = dxt5_rgba_encode(width, height, srccomps,
 102                                   source, srcRowStride,
 103                                   dest, destRowStride);
 104             break;
 105         default:
 106             assert(0);
 107     }
 108
 109     /*return rv;*/
 110 }