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111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* Texture compression
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* Version: 1.0
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*
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* Copyright (C) 2004 Daniel Borca All Rights Reserved.
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*
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* this is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* this is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <assert.h>
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#include "types.h"
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#include "internal.h"
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#include "dxtn.h"
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#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
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#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
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#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
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#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
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TAPI void TAPIENTRY
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fetch_2d_texel_rgb_dxt1 (int texImage_RowStride,
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const byte *texImage_Data,
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int i, int j,
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byte *texel)
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{
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dxt1_rgb_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
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}
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TAPI void TAPIENTRY
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fetch_2d_texel_rgba_dxt1 (int texImage_RowStride,
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const byte *texImage_Data,
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int i, int j,
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byte *texel)
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{
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dxt1_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
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}
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TAPI void TAPIENTRY
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fetch_2d_texel_rgba_dxt3 (int texImage_RowStride,
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const byte *texImage_Data,
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int i, int j,
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byte *texel)
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{
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dxt3_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
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}
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TAPI void TAPIENTRY
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fetch_2d_texel_rgba_dxt5 (int texImage_RowStride,
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const byte *texImage_Data,
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int i, int j,
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byte *texel)
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{
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dxt5_rgba_decode_1(texImage_Data, texImage_RowStride, i, j, texel);
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}
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TAPI void TAPIENTRY
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tx_compress_dxtn (int srccomps, int width, int height,
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const byte *source, int destformat, byte *dest,
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int destRowStride)
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{
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int srcRowStride = width * srccomps;
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int rv;
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switch (destformat) {
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case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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rv = dxt1_rgb_encode(width, height, srccomps,
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source, srcRowStride,
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dest, destRowStride);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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rv = dxt1_rgba_encode(width, height, srccomps,
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source, srcRowStride,
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dest, destRowStride);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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rv = dxt3_rgba_encode(width, height, srccomps,
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source, srcRowStride,
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dest, destRowStride);
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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rv = dxt5_rgba_encode(width, height, srccomps,
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source, srcRowStride,
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dest, destRowStride);
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break;
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default:
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assert(0);
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}
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/*return rv;*/
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}
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