X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Ftexcompress_s3tc.c;h=a1c0f18f36f6ba6e131dbaae41da0ff4d6f3dfa7;hb=cab7ea03688ec73dd71c0b969f2db30cabeb713c;hp=c823967b7a0853e9a3247a92618cb159fb4a5b3e;hpb=18d1fdebebcb52e7fcf50e62c4c02862d173af51;p=mesa.git diff --git a/src/mesa/main/texcompress_s3tc.c b/src/mesa/main/texcompress_s3tc.c index c823967b7a0..a1c0f18f36f 100644 --- a/src/mesa/main/texcompress_s3tc.c +++ b/src/mesa/main/texcompress_s3tc.c @@ -1,8 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 6.5.2 + * Version: 6.5.3 * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * Copyright (c) 2008 VMware, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -29,7 +30,7 @@ */ #ifndef USE_EXTERNAL_DXTN_LIB -#define USE_EXTERNAL_DXTN_LIB 0 +#define USE_EXTERNAL_DXTN_LIB 1 #endif #include "glheader.h" @@ -37,15 +38,12 @@ #include "colormac.h" #include "context.h" #include "convolve.h" +#include "dlopen.h" #include "image.h" #include "texcompress.h" #include "texformat.h" #include "texstore.h" -#if USE_EXTERNAL_DXTN_LIB && !defined(__MINGW32__) -#include -#endif - #ifdef __MINGW32__ #define DXTN_LIBNAME "dxtn.dll" #define RTLD_LAZY 0 @@ -56,6 +54,34 @@ #define DXTN_LIBNAME "libtxc_dxtn.so" #endif +#if FEATURE_EXT_texture_sRGB +/** + * Convert an 8-bit sRGB value from non-linear space to a + * linear RGB value in [0, 1]. + * Implemented with a 256-entry lookup table. + */ +static INLINE GLfloat +nonlinear_to_linear(GLubyte cs8) +{ + static GLfloat table[256]; + static GLboolean tableReady = GL_FALSE; + if (!tableReady) { + /* compute lookup table now */ + GLuint i; + for (i = 0; i < 256; i++) { + const GLfloat cs = UBYTE_TO_FLOAT(i); + if (cs <= 0.04045) { + table[i] = cs / 12.92f; + } + else { + table[i] = (GLfloat) _mesa_pow((cs + 0.055) / 1.055, 2.4); + } + } + tableReady = GL_TRUE; + } + return table[cs8]; +} +#endif /* FEATURE_EXT_texture_sRGB */ typedef void (*dxtFetchTexelFuncExt)( GLint srcRowstride, GLubyte *pixdata, GLint col, GLint row, GLvoid *texelOut ); @@ -74,72 +100,6 @@ 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 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 ) { @@ -147,7 +107,7 @@ _mesa_init_texture_s3tc( GLcontext *ctx ) ctx->Mesa_DXTn = GL_FALSE; #if USE_EXTERNAL_DXTN_LIB if (!dxtlibhandle) { - dxtlibhandle = _mesa_dlopen(DXTN_LIBNAME, RTLD_LAZY | RTLD_GLOBAL); + dxtlibhandle = _mesa_dlopen(DXTN_LIBNAME, 0); if (!dxtlibhandle) { _mesa_warning(ctx, "couldn't open " DXTN_LIBNAME ", software DXTn " "compression/decompression unavailable"); @@ -245,7 +205,7 @@ texstore_rgb_dxt1(TEXSTORE_PARAMS) dst, dstRowStride); } else { - _mesa_problem(ctx, "external dxt library not available"); + _mesa_warning(ctx, "external dxt library not available: texstore_rgb_dxt1"); } if (tempImage) @@ -307,7 +267,7 @@ texstore_rgba_dxt1(TEXSTORE_PARAMS) dst, dstRowStride); } else { - _mesa_problem(ctx, "external dxt library not available"); + _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt1"); } if (tempImage) @@ -368,7 +328,7 @@ texstore_rgba_dxt3(TEXSTORE_PARAMS) dst, dstRowStride); } else { - _mesa_problem(ctx, "external dxt library not available"); + _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt3"); } if (tempImage) @@ -429,7 +389,7 @@ texstore_rgba_dxt5(TEXSTORE_PARAMS) dst, dstRowStride); } else { - _mesa_problem(ctx, "external dxt library not available"); + _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt5"); } if (tempImage) @@ -450,7 +410,7 @@ fetch_texel_2d_rgb_dxt1( const struct gl_texture_image *texImage, (GLubyte *)(texImage)->Data, i, j, texel); } else - _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); + _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgb_dxt1"); } @@ -478,7 +438,7 @@ fetch_texel_2d_rgba_dxt1( const struct gl_texture_image *texImage, (GLubyte *)(texImage)->Data, i, j, texel); } else - _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); + _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt1\n"); } @@ -507,7 +467,7 @@ fetch_texel_2d_rgba_dxt3( const struct gl_texture_image *texImage, i, j, texel); } else - _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); + _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt3\n"); } @@ -535,7 +495,7 @@ fetch_texel_2d_rgba_dxt5( const struct gl_texture_image *texImage, i, j, texel); } else - _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); + _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt5\n"); } @@ -552,6 +512,59 @@ fetch_texel_2d_f_rgba_dxt5( const struct gl_texture_image *texImage, texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); } +#if FEATURE_EXT_texture_sRGB +static void +fetch_texel_2d_f_srgb_dxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgb_dxt1(texImage, i, j, k, rgba); + texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]); + texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]); + texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + +static void +fetch_texel_2d_f_srgba_dxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgba_dxt1(texImage, i, j, k, rgba); + texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]); + texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]); + texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + +static void +fetch_texel_2d_f_srgba_dxt3( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgba_dxt3(texImage, i, j, k, rgba); + texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]); + texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]); + texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + +static void +fetch_texel_2d_f_srgba_dxt5( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgba_dxt5(texImage, i, j, k, rgba); + texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]); + texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]); + texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} +#endif const struct gl_texture_format _mesa_texformat_rgb_dxt1 = { MESA_FORMAT_RGB_DXT1, /* MesaFormat */ @@ -648,3 +661,101 @@ const struct gl_texture_format _mesa_texformat_rgba_dxt5 = { NULL, /*impossible*/ /* FetchTexel3Df */ NULL /* StoreTexel */ }; + +#if FEATURE_EXT_texture_sRGB +const struct gl_texture_format _mesa_texformat_srgb_dxt1 = { + MESA_FORMAT_SRGB_DXT1, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /*approx*/ /* RedBits */ + 4, /*approx*/ /* GreenBits */ + 4, /*approx*/ /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 0, /* TexelBytes */ + texstore_rgb_dxt1, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_srgb_dxt1, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ + NULL /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_srgba_dxt1 = { + MESA_FORMAT_SRGBA_DXT1, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /*approx*/ /* RedBits */ + 4, /*approx*/ /* GreenBits */ + 4, /*approx*/ /* BlueBits */ + 1, /*approx*/ /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 0, /* TexelBytes */ + texstore_rgba_dxt1, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_srgba_dxt1, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ + NULL /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_srgba_dxt3 = { + MESA_FORMAT_SRGBA_DXT3, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /*approx*/ /* RedBits */ + 4, /*approx*/ /* GreenBits */ + 4, /*approx*/ /* BlueBits */ + 4, /*approx*/ /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 0, /* TexelBytes */ + texstore_rgba_dxt3, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_srgba_dxt3, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ + NULL /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_srgba_dxt5 = { + MESA_FORMAT_SRGBA_DXT5, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4,/*approx*/ /* RedBits */ + 4,/*approx*/ /* GreenBits */ + 4,/*approx*/ /* BlueBits */ + 4,/*approx*/ /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 0, /* TexelBytes */ + texstore_rgba_dxt5, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_srgba_dxt5, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ + NULL /* StoreTexel */ +}; +#endif