| 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 | #include <stdlib.h> |
| 25 | |
| 26 | #include "types.h" |
| 27 | #include "internal.h" |
| 28 | #include <SDL_opengl.h> |
| 29 | #include "../../Glide64/m64p.h" |
| 30 | |
| 31 | typedef void (*dxtCompressTexFuncExt)(GLint srccomps, GLint width, GLint height, |
| 32 | const GLubyte *srcPixData, GLenum destformat, |
| 33 | GLubyte *dest, GLint dstRowStride); |
| 34 | static dxtCompressTexFuncExt _tx_compress_dxtn = NULL; |
| 35 | |
| 36 | #ifdef TXCDXTN_EXTERNAL |
| 37 | |
| 38 | #include "../../Glide64/osal_dynamiclib.h" |
| 39 | |
| 40 | #if defined(_WIN32) || defined(WIN32) |
| 41 | #define DXTN_LIBNAME "dxtn.dll" |
| 42 | #elif defined(__DJGPP__) |
| 43 | #define DXTN_LIBNAME "dxtn.dxe" |
| 44 | #else |
| 45 | #define DXTN_LIBNAME "libtxc_dxtn.so" |
| 46 | #endif |
| 47 | |
| 48 | static m64p_dynlib_handle dxtn_lib_handle; |
| 49 | |
| 50 | static void tx_compress_dxtn_init() |
| 51 | { |
| 52 | m64p_error rval; |
| 53 | |
| 54 | if (_tx_compress_dxtn) |
| 55 | return; |
| 56 | |
| 57 | rval = osal_dynlib_open(&dxtn_lib_handle, DXTN_LIBNAME); |
| 58 | if (rval != M64ERR_SUCCESS) { |
| 59 | WriteLog(M64MSG_WARNING, "Failed to open %s", DXTN_LIBNAME); |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | _tx_compress_dxtn = osal_dynlib_getproc(dxtn_lib_handle, "tx_compress_dxtn"); |
| 64 | if (!_tx_compress_dxtn) { |
| 65 | WriteLog(M64MSG_WARNING, "Shared library '%s' invalid; no PluginGetVersion() function found.", DXTN_LIBNAME, "tx_compress_dxtn"); |
| 66 | osal_dynlib_close(dxtn_lib_handle); |
| 67 | return; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | #else |
| 72 | |
| 73 | #include "s2tc/txc_dxtn.h" |
| 74 | |
| 75 | static void tx_compress_dxtn_init() |
| 76 | { |
| 77 | _tx_compress_dxtn = tx_compress_dxtn; |
| 78 | } |
| 79 | |
| 80 | #endif |
| 81 | |
| 82 | |
| 83 | TAPI void TAPIENTRY |
| 84 | tx_compress_dxtn_rgba(int srccomps, int width, int height, |
| 85 | const byte *source, int destformat, byte *dest, |
| 86 | int destRowStride) |
| 87 | { |
| 88 | int srcRowStride = width * srccomps; |
| 89 | void *newSource = NULL; |
| 90 | |
| 91 | tx_compress_dxtn_init(); |
| 92 | if (!_tx_compress_dxtn) { |
| 93 | WriteLog(M64MSG_ERROR, "Failed to initialize S3TC compressor"); |
| 94 | return; |
| 95 | } |
| 96 | |
| 97 | assert(srccomps == 3 || srccomps == 4); |
| 98 | |
| 99 | if (srccomps == 3) |
| 100 | newSource = reorder_source_3_alloc(source, width, height, srcRowStride); |
| 101 | if (srccomps == 4) |
| 102 | newSource = reorder_source_4_alloc(source, width, height, srcRowStride); |
| 103 | |
| 104 | _tx_compress_dxtn(srccomps, width, height, newSource, destformat, dest, |
| 105 | destRowStride); |
| 106 | |
| 107 | free(newSource); |
| 108 | } |