diff options
author | José Fonseca <jfonseca@vmware.com> | 2010-01-08 15:42:57 +0000 |
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committer | José Fonseca <jfonseca@vmware.com> | 2010-01-08 15:42:57 +0000 |
commit | 080c40ab32b2abd6d8381b4a0cc143d36a1652b2 (patch) | |
tree | e173767ebc5a82d81b9fc086449d915e29348976 /src/mesa/main/texcompress.c | |
parent | 9cdf6f025b2ed55cfb13dd09f870f01d0c7947d3 (diff) | |
parent | a1de400e8de06a80ab140bb0fa950e990607572d (diff) |
Merge remote branch 'origin/master' into lp-binning
Conflicts:
src/gallium/auxiliary/util/u_surface.c
src/gallium/drivers/llvmpipe/Makefile
src/gallium/drivers/llvmpipe/SConscript
src/gallium/drivers/llvmpipe/lp_bld_arit.c
src/gallium/drivers/llvmpipe/lp_bld_flow.c
src/gallium/drivers/llvmpipe/lp_bld_interp.c
src/gallium/drivers/llvmpipe/lp_clear.c
src/gallium/drivers/llvmpipe/lp_context.c
src/gallium/drivers/llvmpipe/lp_context.h
src/gallium/drivers/llvmpipe/lp_draw_arrays.c
src/gallium/drivers/llvmpipe/lp_jit.c
src/gallium/drivers/llvmpipe/lp_jit.h
src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
src/gallium/drivers/llvmpipe/lp_setup.c
src/gallium/drivers/llvmpipe/lp_setup_point.c
src/gallium/drivers/llvmpipe/lp_state.h
src/gallium/drivers/llvmpipe/lp_state_blend.c
src/gallium/drivers/llvmpipe/lp_state_derived.c
src/gallium/drivers/llvmpipe/lp_state_fs.c
src/gallium/drivers/llvmpipe/lp_state_sampler.c
src/gallium/drivers/llvmpipe/lp_state_surface.c
src/gallium/drivers/llvmpipe/lp_tex_cache.c
src/gallium/drivers/llvmpipe/lp_tex_cache.h
src/gallium/drivers/llvmpipe/lp_tex_sample.h
src/gallium/drivers/llvmpipe/lp_tile_cache.c
Diffstat (limited to 'src/mesa/main/texcompress.c')
-rw-r--r-- | src/mesa/main/texcompress.c | 247 |
1 files changed, 59 insertions, 188 deletions
diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c index c1b8c7675a..a4f1926ab3 100644 --- a/src/mesa/main/texcompress.c +++ b/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" @@ -113,250 +113,121 @@ _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 - */ -GLuint -_mesa_compressed_texture_size( GLcontext *ctx, - GLsizei width, GLsizei height, GLsizei depth, - GLuint mesaFormat ) -{ - 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 <imageSize> parameter - * of glCompressedTex[Sub]Image1/2/3D(), which must be an exact match. + * Convert a compressed MESA_FORMAT_x to a GLenum. */ -GLuint -_mesa_compressed_texture_size_glenum(GLcontext *ctx, - GLsizei width, GLsizei height, - GLsizei depth, GLenum glformat) +gl_format +_mesa_glenum_to_compressed_format(GLenum format) { - 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 + return MESA_FORMAT_SRGBA_DXT5; + default: - return 0; + return MESA_FORMAT_NONE; } - - 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 +/** + * Given a compressed MESA_FORMAT_x value, return the corresponding + * GLenum for that format. + * This is needed for glGetTexLevelParameter(GL_TEXTURE_INTERNAL_FORMAT) + * which must return the specific texture format used when the user might + * have originally specified a generic compressed format in their + * glTexImage2D() call. + * For non-compressed textures, we always return the user-specified + * internal format unchanged. */ -GLint -_mesa_compressed_row_stride(GLuint mesaFormat, GLsizei width) +GLenum +_mesa_compressed_format_to_glenum(GLcontext *ctx, GLuint mesaFormat) { - GLint stride; - switch (mesaFormat) { #if FEATURE_texture_fxt1 case MESA_FORMAT_RGB_FXT1: + return GL_COMPRESSED_RGB_FXT1_3DFX; case MESA_FORMAT_RGBA_FXT1: - stride = ((width + 7) / 8) * 16; /* 16 bytes per 8x4 tile */ - break; + return GL_COMPRESSED_RGBA_FXT1_3DFX; #endif #if FEATURE_texture_s3tc case MESA_FORMAT_RGB_DXT1: + return GL_COMPRESSED_RGB_S3TC_DXT1_EXT; 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; + return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; case MESA_FORMAT_RGBA_DXT3: + return GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; case MESA_FORMAT_RGBA_DXT5: + return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; #if FEATURE_EXT_texture_sRGB + case MESA_FORMAT_SRGB_DXT1: + return GL_COMPRESSED_SRGB_S3TC_DXT1_EXT; + case MESA_FORMAT_SRGBA_DXT1: + return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT; case MESA_FORMAT_SRGBA_DXT3: + return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; case MESA_FORMAT_SRGBA_DXT5: + return GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; #endif - stride = ((width + 3) / 4) * 16; /* 16 bytes per 4x4 tile */ - break; #endif default: - _mesa_problem(NULL, "bad mesaFormat in _mesa_compressed_row_stride"); + _mesa_problem(ctx, "Unexpected mesa texture format in" + " _mesa_compressed_format_to_glenum()"); return 0; } - - return stride; } /* * Return the address of the pixel at (col, row, img) in a * compressed texture image. - * \param col, row, img - image position (3D) + * \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 + * \param width - image width (stride) in pixels * \param image - the image address - * \return address of pixel at (row, col) + * \return address of pixel at (row, col, img) */ GLubyte * _mesa_compressed_image_address(GLint col, GLint row, GLint img, - GLuint mesaFormat, + gl_format mesaFormat, GLsizei width, const GLubyte *image) { - GLubyte *addr; + /* XXX only 2D images implemented, not 3D */ + const GLuint blockSize = _mesa_get_format_bytes(mesaFormat); + GLuint bw, bh; + GLint offset; - (void) img; + _mesa_get_format_block_size(mesaFormat, &bw, &bh); - /* 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); - */ + ASSERT(col % bw == 0); + ASSERT(row % bh == 0); - 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; - } + offset = ((width + bw - 1) / bw) * (row / bh) + col / bw; + offset *= blockSize; - return addr; + return (GLubyte *) image + offset; } |