diff options
Diffstat (limited to 'src/mesa/main/texcompress_s3tc.c')
| -rw-r--r-- | src/mesa/main/texcompress_s3tc.c | 135 |
1 files changed, 98 insertions, 37 deletions
diff --git a/src/mesa/main/texcompress_s3tc.c b/src/mesa/main/texcompress_s3tc.c index 656a3d329c1..3ccc8a8df75 100644 --- a/src/mesa/main/texcompress_s3tc.c +++ b/src/mesa/main/texcompress_s3tc.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5 + * Version: 6.5.1 * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -42,28 +42,21 @@ #include "texformat.h" #include "texstore.h" -#if USE_EXTERNAL_DXTN_LIB +#if USE_EXTERNAL_DXTN_LIB && !defined(__MINGW32__) +#include <dlfcn.h> +#endif + #ifdef __MINGW32__ -/* no dlopen */ -#define DXTN_EXT "dxtn.dll" -#define DXTN_PREFIX "" -#define dlopen(name, mode) LoadLibrary(name) -#define dlsym(hndl, proc) GetProcAddress(hndl, proc) -#define dlclose(hndl) FreeLibrary(hndl) +#define DXTN_LIBNAME "dxtn.dll" #elif defined(__DJGPP__) -/* has dlopen, but doesn't like the names */ -#include <dlfcn.h> -#define DXTN_EXT "dxtn.dxe" -#define DXTN_PREFIX "_" +#define DXTN_LIBNAME "dxtn.dxe" #else -/* happiness */ -#include <dlfcn.h> -#define DXTN_EXT "libtxc_dxtn.so" -#define DXTN_PREFIX "" +#define DXTN_LIBNAME "libtxc_dxtn.so" #endif -#endif /* USE_EXTERNAL_DXTN_LIB */ + typedef void (*dxtFetchTexelFuncExt)( GLint srcRowstride, GLubyte *pixdata, GLint col, GLint row, GLvoid *texelOut ); + dxtFetchTexelFuncExt fetch_ext_rgb_dxt1 = NULL; dxtFetchTexelFuncExt fetch_ext_rgba_dxt1 = NULL; dxtFetchTexelFuncExt fetch_ext_rgba_dxt3 = NULL; @@ -73,11 +66,78 @@ typedef void (*dxtCompressTexFuncExt)(GLint srccomps, GLint width, GLint height, const GLchan *srcPixData, GLenum destformat, GLubyte *dest, GLint dstRowStride); + static dxtCompressTexFuncExt ext_tx_compress_dxtn = NULL; static void *dxtlibhandle = NULL; +typedef void (*GenericFunc)(void); + + +/** + * Wrapper for dlopen(). + * XXX Probably move this and the following wrappers into imports.h someday. + */ +static void * +_mesa_dlopen(const char *libname, int flags) +{ +#if USE_EXTERNAL_DXTN_LIB +#ifdef __MINGW32__ + return LoadLibrary(libname); +#else + return dlopen(libname, flags); +#endif +#else + return (GenericFunc) NULL; +#endif /* USE_EXTERNAL_DXTN_LIB */ +} + + +/** + * Wrapper for dlsym() that does a cast to a generic function type, + * rather than a void *. This reduces the number of warnings that are + * generated. + */ +static GenericFunc +_mesa_dlsym(void *handle, const char *fname) +{ +#if USE_EXTERNAL_DXTN_LIB +#ifdef __MINGW32__ + return (GenericFunc) GetProcAddress(handle, fname) +#elif defined(__DJGPP__) + /* need '_' prefix on symbol names */ + char fname2[1000]; + fname2[0] = '_'; + _mesa_strncpy(fname2 + 1, fname, 998); + fname2[999] = 0; + return (GenericFunc) dlsym(handle, fname2); +#else + return (GenericFunc) dlsym(handle, fname); +#endif +#else + return (GenericFunc) NULL; +#endif /* USE_EXTERNAL_DXTN_LIB */ +} + + +/** + * Wrapper for dlclose(). + */ +static void +_mesa_dlclose(void *handle) +{ +#if USE_EXTERNAL_DXTN_LIB +#ifdef __MINGW32__ + FreeLibrary(handle); +#else + dlclose(handle); +#endif +#endif +} + + + void _mesa_init_texture_s3tc( GLcontext *ctx ) { @@ -85,37 +145,38 @@ _mesa_init_texture_s3tc( GLcontext *ctx ) ctx->Mesa_DXTn = GL_FALSE; #if USE_EXTERNAL_DXTN_LIB if (!dxtlibhandle) { - dxtlibhandle = dlopen (DXTN_EXT, RTLD_LAZY | RTLD_GLOBAL); + dxtlibhandle = _mesa_dlopen(DXTN_LIBNAME, RTLD_LAZY | RTLD_GLOBAL); if (!dxtlibhandle) { - _mesa_warning(ctx, "couldn't open " DXTN_EXT ", software DXTn " + _mesa_warning(ctx, "couldn't open " DXTN_LIBNAME ", software DXTn " "compression/decompression unavailable"); } else { /* the fetch functions are not per context! Might be problematic... */ - fetch_ext_rgb_dxt1 = (dxtFetchTexelFuncExt)dlsym(dxtlibhandle, DXTN_PREFIX "fetch_2d_texel_rgb_dxt1"); - if (fetch_ext_rgb_dxt1 != NULL) { - fetch_ext_rgba_dxt1 = (dxtFetchTexelFuncExt)dlsym(dxtlibhandle, DXTN_PREFIX "fetch_2d_texel_rgba_dxt1"); - } - if (fetch_ext_rgba_dxt1 != NULL) { - fetch_ext_rgba_dxt3 = (dxtFetchTexelFuncExt)dlsym(dxtlibhandle, DXTN_PREFIX "fetch_2d_texel_rgba_dxt3"); - } - if (fetch_ext_rgba_dxt3 != NULL) { - fetch_ext_rgba_dxt5 = (dxtFetchTexelFuncExt)dlsym(dxtlibhandle, DXTN_PREFIX "fetch_2d_texel_rgba_dxt5"); - } - if (fetch_ext_rgba_dxt5 != NULL) { - ext_tx_compress_dxtn = (dxtCompressTexFuncExt)dlsym(dxtlibhandle, DXTN_PREFIX "tx_compress_dxtn"); - } - - if (ext_tx_compress_dxtn == NULL) { + fetch_ext_rgb_dxt1 = (dxtFetchTexelFuncExt) + _mesa_dlsym(dxtlibhandle, "fetch_2d_texel_rgb_dxt1"); + fetch_ext_rgba_dxt1 = (dxtFetchTexelFuncExt) + _mesa_dlsym(dxtlibhandle, "fetch_2d_texel_rgba_dxt1"); + fetch_ext_rgba_dxt3 = (dxtFetchTexelFuncExt) + _mesa_dlsym(dxtlibhandle, "fetch_2d_texel_rgba_dxt3"); + fetch_ext_rgba_dxt5 = (dxtFetchTexelFuncExt) + _mesa_dlsym(dxtlibhandle, "fetch_2d_texel_rgba_dxt5"); + ext_tx_compress_dxtn = (dxtCompressTexFuncExt) + _mesa_dlsym(dxtlibhandle, "tx_compress_dxtn"); + + if (!fetch_ext_rgb_dxt1 || + !fetch_ext_rgba_dxt1 || + !fetch_ext_rgba_dxt3 || + !fetch_ext_rgba_dxt5 || + !ext_tx_compress_dxtn) { _mesa_warning(ctx, "couldn't reference all symbols in " - DXTN_EXT ", software DXTn compression/decompression " + DXTN_LIBNAME ", software DXTn compression/decompression " "unavailable"); fetch_ext_rgb_dxt1 = NULL; fetch_ext_rgba_dxt1 = NULL; fetch_ext_rgba_dxt3 = NULL; fetch_ext_rgba_dxt5 = NULL; ext_tx_compress_dxtn = NULL; - dlclose(dxtlibhandle); + _mesa_dlclose(dxtlibhandle); dxtlibhandle = NULL; } } |