From 14b1cb8d5a27ec9716d3f790fce95f0469e35605 Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 7 Mar 2010 13:28:57 +0000 Subject: Updated to Mesa 7.7 --- mesalib/src/mesa/main/texcompress.c | 275 +++++++----------------------------- 1 file changed, 48 insertions(+), 227 deletions(-) (limited to 'mesalib/src/mesa/main/texcompress.c') diff --git a/mesalib/src/mesa/main/texcompress.c b/mesalib/src/mesa/main/texcompress.c index 2cda4dd85..a4f1926ab 100644 --- a/mesalib/src/mesa/main/texcompress.c +++ b/mesalib/src/mesa/main/texcompress.c @@ -34,10 +34,10 @@ #include "imports.h" #include "colormac.h" #include "context.h" +#include "formats.h" #include "image.h" #include "mipmap.h" #include "texcompress.h" -#include "texformat.h" #include "texstore.h" @@ -113,252 +113,43 @@ _mesa_get_compressed_formats(GLcontext *ctx, GLint *formats, GLboolean all) } - /** - * Return number of bytes needed to store a texture of the given size - * using the specified compressed format. - * This is called via the ctx->Driver.CompressedTextureSize function, - * unless a device driver overrides it. - * - * \param width texture width in texels. - * \param height texture height in texels. - * \param depth texture depth in texels. - * \param mesaFormat one of the MESA_FORMAT_* compressed formats - * - * \return size in bytes, or zero if bad format + * Convert a compressed MESA_FORMAT_x to a GLenum. */ -GLuint -_mesa_compressed_texture_size( GLcontext *ctx, - GLsizei width, GLsizei height, GLsizei depth, - GLuint mesaFormat ) +gl_format +_mesa_glenum_to_compressed_format(GLenum format) { - GLuint size; - - ASSERT(depth == 1); - (void) depth; - (void) size; - - switch (mesaFormat) { -#if FEATURE_texture_fxt1 - case MESA_FORMAT_RGB_FXT1: - case MESA_FORMAT_RGBA_FXT1: - /* round up width to next multiple of 8, height to next multiple of 4 */ - width = (width + 7) & ~7; - height = (height + 3) & ~3; - /* 16 bytes per 8x4 tile of RGB[A] texels */ - size = width * height / 2; - /* Textures smaller than 8x4 will effectively be made into 8x4 and - * take 16 bytes. - */ - return size; -#endif -#if FEATURE_texture_s3tc - case MESA_FORMAT_RGB_DXT1: - case MESA_FORMAT_RGBA_DXT1: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGB_DXT1: - case MESA_FORMAT_SRGBA_DXT1: -#endif - /* round up width, height to next multiple of 4 */ - width = (width + 3) & ~3; - height = (height + 3) & ~3; - /* 8 bytes per 4x4 tile of RGB[A] texels */ - size = width * height / 2; - /* Textures smaller than 4x4 will effectively be made into 4x4 and - * take 8 bytes. - */ - return size; - case MESA_FORMAT_RGBA_DXT3: - case MESA_FORMAT_RGBA_DXT5: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGBA_DXT3: - case MESA_FORMAT_SRGBA_DXT5: -#endif - /* round up width, height to next multiple of 4 */ - width = (width + 3) & ~3; - height = (height + 3) & ~3; - /* 16 bytes per 4x4 tile of RGBA texels */ - size = width * height; /* simple! */ - /* Textures smaller than 4x4 will effectively be made into 4x4 and - * take 16 bytes. - */ - return size; -#endif - default: - _mesa_problem(ctx, "bad mesaFormat in _mesa_compressed_texture_size"); - return 0; - } -} - - -/** - * As above, but format is specified by a GLenum (GL_COMPRESSED_*) token. - * - * Note: This function CAN NOT return a padded hardware texture size. - * That's why we don't call the ctx->Driver.CompressedTextureSize() function. - * - * We use this function to validate the parameter - * of glCompressedTex[Sub]Image1/2/3D(), which must be an exact match. - */ -GLuint -_mesa_compressed_texture_size_glenum(GLcontext *ctx, - GLsizei width, GLsizei height, - GLsizei depth, GLenum glformat) -{ - GLuint mesaFormat; - - switch (glformat) { -#if FEATURE_texture_fxt1 + switch (format) { case GL_COMPRESSED_RGB_FXT1_3DFX: - mesaFormat = MESA_FORMAT_RGB_FXT1; - break; + return MESA_FORMAT_RGB_FXT1; case GL_COMPRESSED_RGBA_FXT1_3DFX: - mesaFormat = MESA_FORMAT_RGBA_FXT1; - break; -#endif -#if FEATURE_texture_s3tc + return MESA_FORMAT_RGBA_FXT1; + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: case GL_RGB_S3TC: - mesaFormat = MESA_FORMAT_RGB_DXT1; - break; + return MESA_FORMAT_RGB_DXT1; case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: case GL_RGB4_S3TC: - mesaFormat = MESA_FORMAT_RGBA_DXT1; - break; + return MESA_FORMAT_RGBA_DXT1; case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: case GL_RGBA_S3TC: - mesaFormat = MESA_FORMAT_RGBA_DXT3; - break; + return MESA_FORMAT_RGBA_DXT3; case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: case GL_RGBA4_S3TC: - mesaFormat = MESA_FORMAT_RGBA_DXT5; - break; -#if FEATURE_EXT_texture_sRGB + return MESA_FORMAT_RGBA_DXT5; + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: - mesaFormat = MESA_FORMAT_SRGB_DXT1; - break; + return MESA_FORMAT_SRGB_DXT1; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: - mesaFormat = MESA_FORMAT_SRGBA_DXT1; - break; + return MESA_FORMAT_SRGBA_DXT1; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: - mesaFormat = MESA_FORMAT_SRGBA_DXT3; - break; + return MESA_FORMAT_SRGBA_DXT3; case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: - mesaFormat = MESA_FORMAT_SRGBA_DXT5; - break; -#endif -#endif - default: - return 0; - } - - return _mesa_compressed_texture_size(ctx, width, height, depth, mesaFormat); -} - - -/* - * Compute the bytes per row in a compressed texture image. - * We use this for computing the destination address for sub-texture updates. - * \param mesaFormat one of the MESA_FORMAT_* compressed formats - * \param width image width in pixels - * \return stride, in bytes, between rows for compressed image - */ -GLint -_mesa_compressed_row_stride(GLuint mesaFormat, GLsizei width) -{ - GLint stride; - - switch (mesaFormat) { -#if FEATURE_texture_fxt1 - case MESA_FORMAT_RGB_FXT1: - case MESA_FORMAT_RGBA_FXT1: - stride = ((width + 7) / 8) * 16; /* 16 bytes per 8x4 tile */ - break; -#endif -#if FEATURE_texture_s3tc - case MESA_FORMAT_RGB_DXT1: - case MESA_FORMAT_RGBA_DXT1: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGB_DXT1: - case MESA_FORMAT_SRGBA_DXT1: -#endif - stride = ((width + 3) / 4) * 8; /* 8 bytes per 4x4 tile */ - break; - case MESA_FORMAT_RGBA_DXT3: - case MESA_FORMAT_RGBA_DXT5: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGBA_DXT3: - case MESA_FORMAT_SRGBA_DXT5: -#endif - stride = ((width + 3) / 4) * 16; /* 16 bytes per 4x4 tile */ - break; -#endif - default: - _mesa_problem(NULL, "bad mesaFormat in _mesa_compressed_row_stride"); - return 0; - } - - return stride; -} - + return MESA_FORMAT_SRGBA_DXT5; -/* - * Return the address of the pixel at (col, row, img) in a - * compressed texture image. - * \param col, row, img - image position (3D) - * \param format - compressed image format - * \param width - image width - * \param image - the image address - * \return address of pixel at (row, col) - */ -GLubyte * -_mesa_compressed_image_address(GLint col, GLint row, GLint img, - GLuint mesaFormat, - GLsizei width, const GLubyte *image) -{ - GLubyte *addr; - - (void) img; - - /* We try to spot a "complete" subtexture "above" ROW, COL; - * this texture is given by appropriate rounding of WIDTH x ROW. - * Then we just add the amount left (usually on the left). - * - * Example for X*Y microtiles (Z bytes each) - * offset = Z * (((width + X - 1) / X) * (row / Y) + col / X); - */ - - switch (mesaFormat) { -#if FEATURE_texture_fxt1 - case MESA_FORMAT_RGB_FXT1: - case MESA_FORMAT_RGBA_FXT1: - addr = (GLubyte *) image + 16 * (((width + 7) / 8) * (row / 4) + col / 8); - break; -#endif -#if FEATURE_texture_s3tc - case MESA_FORMAT_RGB_DXT1: - case MESA_FORMAT_RGBA_DXT1: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGB_DXT1: - case MESA_FORMAT_SRGBA_DXT1: -#endif - addr = (GLubyte *) image + 8 * (((width + 3) / 4) * (row / 4) + col / 4); - break; - case MESA_FORMAT_RGBA_DXT3: - case MESA_FORMAT_RGBA_DXT5: -#if FEATURE_EXT_texture_sRGB - case MESA_FORMAT_SRGBA_DXT3: - case MESA_FORMAT_SRGBA_DXT5: -#endif - addr = (GLubyte *) image + 16 * (((width + 3) / 4) * (row / 4) + col / 4); - break; -#endif default: - _mesa_problem(NULL, "bad mesaFormat in _mesa_compressed_image_address"); - addr = NULL; + return MESA_FORMAT_NONE; } - - return addr; } @@ -410,3 +201,33 @@ _mesa_compressed_format_to_glenum(GLcontext *ctx, GLuint mesaFormat) } +/* + * Return the address of the pixel at (col, row, img) in a + * compressed texture image. + * \param col, row, img - image position (3D), should be a multiple of the + * format's block size. + * \param format - compressed image format + * \param width - image width (stride) in pixels + * \param image - the image address + * \return address of pixel at (row, col, img) + */ +GLubyte * +_mesa_compressed_image_address(GLint col, GLint row, GLint img, + gl_format mesaFormat, + GLsizei width, const GLubyte *image) +{ + /* XXX only 2D images implemented, not 3D */ + const GLuint blockSize = _mesa_get_format_bytes(mesaFormat); + GLuint bw, bh; + GLint offset; + + _mesa_get_format_block_size(mesaFormat, &bw, &bh); + + ASSERT(col % bw == 0); + ASSERT(row % bh == 0); + + offset = ((width + bw - 1) / bw) * (row / bh) + col / bw; + offset *= blockSize; + + return (GLubyte *) image + offset; +} -- cgit v1.2.3