diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/texcompress_s3tc.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/texcompress_s3tc.c | 555 |
1 files changed, 0 insertions, 555 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/texcompress_s3tc.c b/nx-X11/extras/Mesa/src/mesa/main/texcompress_s3tc.c deleted file mode 100644 index 44ab9e2ac..000000000 --- a/nx-X11/extras/Mesa/src/mesa/main/texcompress_s3tc.c +++ /dev/null @@ -1,555 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.1 - * - * Copyright (C) 1999-2004 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"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/** - * \file texcompress_s3tc.c - * GL_EXT_texture_compression_s3tc support. - */ - -#ifndef USE_EXTERNAL_DXTN_LIB -#define USE_EXTERNAL_DXTN_LIB 0 -#endif - -#include "glheader.h" -#include "imports.h" -#include "colormac.h" -#include "context.h" -#include "convolve.h" -#include "image.h" -#include "texcompress.h" -#include "texformat.h" -#include "texstore.h" - -#if USE_EXTERNAL_DXTN_LIB -#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) -#elif defined(__DJGPP__) -/* has dlopen, but doesn't like the names */ -#include <dlfcn.h> -#define DXTN_EXT "dxtn.dxe" -#define DXTN_PREFIX "_" -#else -/* happiness */ -#include <dlfcn.h> -#define DXTN_EXT "libtxc_dxtn.so" -#define DXTN_PREFIX "" -#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; -dxtFetchTexelFuncExt fetch_ext_rgba_dxt5 = NULL; - -typedef void (*dxtCompressTexFuncExt)(GLint srccomps, GLint width, GLint height, const GLubyte *srcPixData, GLenum destformat, GLubyte *dest, GLint dstRowStride); -dxtCompressTexFuncExt ext_tx_compress_dxtn = NULL; - -void *dxtlibhandle = NULL; - -void -_mesa_init_texture_s3tc( GLcontext *ctx ) -{ - /* called during context initialization */ - ctx->Mesa_DXTn = GL_FALSE; -#if USE_EXTERNAL_DXTN_LIB - if (!dxtlibhandle) { - dxtlibhandle = dlopen (DXTN_EXT, RTLD_LAZY | RTLD_GLOBAL); - if (!dxtlibhandle) { - _mesa_warning(ctx, "couldn't open " DXTN_EXT ", software DXTn " - "compression/decompression unavailable\n"); - } - 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) { - _mesa_warning(ctx, "couldn't reference all symbols in " - DXTN_EXT ", software DXTn compression/decompression " - "unavailable\n"); - 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); - dxtlibhandle = NULL; - } - } - } - if (dxtlibhandle) { - ctx->Mesa_DXTn = GL_TRUE; - _mesa_warning(ctx, "software DXTn compression/decompression available\n"); - } -#else - (void) ctx; -#endif -} - -/** - * Called via TexFormat->StoreImage to store an RGB_DXT1 texture. - */ -static GLboolean -texstore_rgb_dxt1(STORE_PARAMS) -{ - const GLchan *pixels; - GLint srcRowStride; - GLubyte *dst; - const GLint texWidth = dstRowStride * 4 / 8; /* a bit of a hack */ - const GLchan *tempImage = NULL; - - ASSERT(dstFormat == &_mesa_texformat_rgb_dxt1); - ASSERT(dstXoffset % 4 == 0); - ASSERT(dstYoffset % 4 == 0); - ASSERT(dstZoffset % 4 == 0); - (void) dstZoffset; (void) dstImageStride; - - if (srcFormat != GL_RGB || - srcType != CHAN_TYPE || - ctx->_ImageTransferState || - srcPacking->SwapBytes) { - /* convert image to RGB/GLchan */ - tempImage = _mesa_make_temp_chan_image(ctx, dims, - baseInternalFormat, - dstFormat->BaseFormat, - srcWidth, srcHeight, srcDepth, - srcFormat, srcType, srcAddr, - srcPacking); - if (!tempImage) - return GL_FALSE; /* out of memory */ - _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); - pixels = tempImage; - srcRowStride = 3 * srcWidth; - srcFormat = GL_RGB; - } - else { - pixels = (const GLchan *) srcAddr; - srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, - srcType) / sizeof(GLchan); - } - - dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0, - GL_COMPRESSED_RGB_S3TC_DXT1_EXT, - texWidth, (GLubyte *) dstAddr); - - if (ext_tx_compress_dxtn) { - (*ext_tx_compress_dxtn)(3, srcWidth, srcHeight, pixels, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, dst, dstRowStride); - } - else { - _mesa_problem(ctx, "external dxt library not available"); - } - - if (tempImage) - _mesa_free((void *) tempImage); - - return GL_TRUE; -} - - -/** - * Called via TexFormat->StoreImage to store an RGBA_DXT1 texture. - */ -static GLboolean -texstore_rgba_dxt1(STORE_PARAMS) -{ - const GLchan *pixels; - GLint srcRowStride; - GLubyte *dst; - const GLint texWidth = dstRowStride * 4 / 8; /* a bit of a hack */ - const GLchan *tempImage = NULL; - - ASSERT(dstFormat == &_mesa_texformat_rgba_dxt1); - ASSERT(dstXoffset % 4 == 0); - ASSERT(dstYoffset % 4 == 0); - ASSERT(dstZoffset % 4 == 0); - (void) dstZoffset; (void) dstImageStride; - - if (srcFormat != GL_RGBA || - srcType != CHAN_TYPE || - ctx->_ImageTransferState || - srcPacking->SwapBytes) { - /* convert image to RGBA/GLchan */ - tempImage = _mesa_make_temp_chan_image(ctx, dims, - baseInternalFormat, - dstFormat->BaseFormat, - srcWidth, srcHeight, srcDepth, - srcFormat, srcType, srcAddr, - srcPacking); - if (!tempImage) - return GL_FALSE; /* out of memory */ - _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); - pixels = tempImage; - srcRowStride = 4 * srcWidth; - srcFormat = GL_RGBA; - } - else { - pixels = (const GLchan *) srcAddr; - srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, - srcType) / sizeof(GLchan); - } - - dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0, - GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, - texWidth, (GLubyte *) dstAddr); - if (ext_tx_compress_dxtn) { - (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, dst, dstRowStride); - } - else { - _mesa_problem(ctx, "external dxt library not available"); - } - - if (tempImage) - _mesa_free((void*) tempImage); - - return GL_TRUE; -} - - -/** - * Called via TexFormat->StoreImage to store an RGBA_DXT3 texture. - */ -static GLboolean -texstore_rgba_dxt3(STORE_PARAMS) -{ - const GLchan *pixels; - GLint srcRowStride; - GLubyte *dst; - const GLint texWidth = dstRowStride * 4 / 16; /* a bit of a hack */ - const GLchan *tempImage = NULL; - - ASSERT(dstFormat == &_mesa_texformat_rgba_dxt3); - ASSERT(dstXoffset % 4 == 0); - ASSERT(dstYoffset % 4 == 0); - ASSERT(dstZoffset % 4 == 0); - (void) dstZoffset; (void) dstImageStride; - - if (srcFormat != GL_RGBA || - srcType != CHAN_TYPE || - ctx->_ImageTransferState || - srcPacking->SwapBytes) { - /* convert image to RGBA/GLchan */ - tempImage = _mesa_make_temp_chan_image(ctx, dims, - baseInternalFormat, - dstFormat->BaseFormat, - srcWidth, srcHeight, srcDepth, - srcFormat, srcType, srcAddr, - srcPacking); - if (!tempImage) - return GL_FALSE; /* out of memory */ - _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); - pixels = tempImage; - srcRowStride = 4 * srcWidth; - } - else { - pixels = (const GLchan *) srcAddr; - srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, - srcType) / sizeof(GLchan); - } - - dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0, - GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, - texWidth, (GLubyte *) dstAddr); - if (ext_tx_compress_dxtn) { - (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, dst, dstRowStride); - } - else { - _mesa_problem(ctx, "external dxt library not available"); - } - - if (tempImage) - _mesa_free((void *) tempImage); - - return GL_TRUE; -} - - -/** - * Called via TexFormat->StoreImage to store an RGBA_DXT5 texture. - */ -static GLboolean -texstore_rgba_dxt5(STORE_PARAMS) -{ - const GLchan *pixels; - GLint srcRowStride; - GLubyte *dst; - const GLint texWidth = dstRowStride * 4 / 16; /* a bit of a hack */ - const GLchan *tempImage = NULL; - - ASSERT(dstFormat == &_mesa_texformat_rgba_dxt5); - ASSERT(dstXoffset % 4 == 0); - ASSERT(dstYoffset % 4 == 0); - ASSERT(dstZoffset % 4 == 0); - (void) dstZoffset; (void) dstImageStride; - - if (srcFormat != GL_RGBA || - srcType != CHAN_TYPE || - ctx->_ImageTransferState || - srcPacking->SwapBytes) { - /* convert image to RGBA/GLchan */ - tempImage = _mesa_make_temp_chan_image(ctx, dims, - baseInternalFormat, - dstFormat->BaseFormat, - srcWidth, srcHeight, srcDepth, - srcFormat, srcType, srcAddr, - srcPacking); - if (!tempImage) - return GL_FALSE; /* out of memory */ - _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight); - pixels = tempImage; - srcRowStride = 4 * srcWidth; - } - else { - pixels = (const GLchan *) srcAddr; - srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, - srcType) / sizeof(GLchan); - } - - dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0, - GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, - texWidth, (GLubyte *) dstAddr); - if (ext_tx_compress_dxtn) { - (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, dst, dstRowStride); - } - else { - _mesa_problem(ctx, "external dxt library not available"); - } - - if (tempImage) - _mesa_free((void *) tempImage); - - return GL_TRUE; -} - - -static void -fetch_texel_2d_rgb_dxt1( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLchan *texel ) -{ - (void) k; - if (fetch_ext_rgb_dxt1) { - ASSERT (sizeof(GLchan) == sizeof(GLubyte)); - (*fetch_ext_rgb_dxt1)((texImage)->RowStride, (GLubyte *)(texImage)->Data, i, j, texel); - } - else _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); -} - - -static void -fetch_texel_2d_f_rgb_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] = CHAN_TO_FLOAT(rgba[RCOMP]); - texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); - texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); - texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); -} - - -static void -fetch_texel_2d_rgba_dxt1( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLchan *texel ) -{ - (void) k; - if (fetch_ext_rgba_dxt1) { - (*fetch_ext_rgba_dxt1)((texImage)->RowStride, (GLubyte *)(texImage)->Data, i, j, texel); - } - else _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); -} - - -static void -fetch_texel_2d_f_rgba_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] = CHAN_TO_FLOAT(rgba[RCOMP]); - texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); - texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); - texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); -} - - -static void -fetch_texel_2d_rgba_dxt3( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLchan *texel ) -{ - (void) k; - if (fetch_ext_rgba_dxt3) { - ASSERT (sizeof(GLchan) == sizeof(GLubyte)); - (*fetch_ext_rgba_dxt3)((texImage)->RowStride, (GLubyte *)(texImage)->Data, i, j, texel); - } - else _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); -} - - -static void -fetch_texel_2d_f_rgba_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] = CHAN_TO_FLOAT(rgba[RCOMP]); - texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); - texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); - texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); -} - - -static void -fetch_texel_2d_rgba_dxt5( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLchan *texel ) -{ - (void) k; - if (fetch_ext_rgba_dxt5) { - (*fetch_ext_rgba_dxt5)((texImage)->RowStride, (GLubyte *)(texImage)->Data, i, j, texel); - } - else _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n"); -} - - -static void -fetch_texel_2d_f_rgba_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] = CHAN_TO_FLOAT(rgba[RCOMP]); - texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); - texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); - texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); -} - - -const struct gl_texture_format _mesa_texformat_rgb_dxt1 = { - MESA_FORMAT_RGB_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, /* TexelBytes */ - texstore_rgb_dxt1, /* StoreTexImageFunc */ - NULL, /*impossible*/ /* FetchTexel1D */ - fetch_texel_2d_rgb_dxt1, /* FetchTexel2D */ - NULL, /*impossible*/ /* FetchTexel3D */ - NULL, /*impossible*/ /* FetchTexel1Df */ - fetch_texel_2d_f_rgb_dxt1, /* FetchTexel2Df */ - NULL, /*impossible*/ /* FetchTexel3Df */ -}; - -const struct gl_texture_format _mesa_texformat_rgba_dxt1 = { - MESA_FORMAT_RGBA_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, /* TexelBytes */ - texstore_rgba_dxt1, /* StoreTexImageFunc */ - NULL, /*impossible*/ /* FetchTexel1D */ - fetch_texel_2d_rgba_dxt1, /* FetchTexel2D */ - NULL, /*impossible*/ /* FetchTexel3D */ - NULL, /*impossible*/ /* FetchTexel1Df */ - fetch_texel_2d_f_rgba_dxt1, /* FetchTexel2Df */ - NULL, /*impossible*/ /* FetchTexel3Df */ -}; - -const struct gl_texture_format _mesa_texformat_rgba_dxt3 = { - MESA_FORMAT_RGBA_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, /* TexelBytes */ - texstore_rgba_dxt3, /* StoreTexImageFunc */ - NULL, /*impossible*/ /* FetchTexel1D */ - fetch_texel_2d_rgba_dxt3, /* FetchTexel2D */ - NULL, /*impossible*/ /* FetchTexel3D */ - NULL, /*impossible*/ /* FetchTexel1Df */ - fetch_texel_2d_f_rgba_dxt3, /* FetchTexel2Df */ - NULL, /*impossible*/ /* FetchTexel3Df */ -}; - -const struct gl_texture_format _mesa_texformat_rgba_dxt5 = { - MESA_FORMAT_RGBA_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, /* TexelBytes */ - texstore_rgba_dxt5, /* StoreTexImageFunc */ - NULL, /*impossible*/ /* FetchTexel1D */ - fetch_texel_2d_rgba_dxt5, /* FetchTexel2D */ - NULL, /*impossible*/ /* FetchTexel3D */ - NULL, /*impossible*/ /* FetchTexel1Df */ - fetch_texel_2d_f_rgba_dxt5, /* FetchTexel2Df */ - NULL, /*impossible*/ /* FetchTexel3Df */ -}; |