X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmesa%2Fmain%2Ftexcompress.c;h=cff6de89ee30bd2e0c8278902cfdae779c337d1e;hb=df65e64c294e93d83f6400b29a2a2d1c69db2c5d;hp=04f0f3ab138f340a1701280aa054d8d92363102b;hpb=a22d865f93a1db7f72e0bfe216810f67bf4c2f2c;p=mesa.git diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c index 04f0f3ab138..cff6de89ee3 100644 --- a/src/mesa/main/texcompress.c +++ b/src/mesa/main/texcompress.c @@ -34,11 +34,8 @@ #include "imports.h" #include "colormac.h" #include "context.h" -#include "image.h" -#include "mipmap.h" +#include "formats.h" #include "texcompress.h" -#include "texformat.h" -#include "texstore.h" /** @@ -57,314 +54,177 @@ GLuint _mesa_get_compressed_formats(GLcontext *ctx, GLint *formats, GLboolean all) { GLuint n = 0; - if (ctx->Extensions.ARB_texture_compression) { - if (ctx->Extensions.TDFX_texture_compression_FXT1) { - if (formats) { - formats[n++] = GL_COMPRESSED_RGB_FXT1_3DFX; - formats[n++] = GL_COMPRESSED_RGBA_FXT1_3DFX; - } - else { - n += 2; - } + if (ctx->Extensions.TDFX_texture_compression_FXT1) { + if (formats) { + formats[n++] = GL_COMPRESSED_RGB_FXT1_3DFX; + formats[n++] = GL_COMPRESSED_RGBA_FXT1_3DFX; } - if (ctx->Extensions.EXT_texture_compression_s3tc) { - if (formats) { - formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; - /* This format has some restrictions/limitations and so should - * not be returned via the GL_COMPRESSED_TEXTURE_FORMATS query. - * Specifically, all transparent pixels become black. NVIDIA - * omits this format too. - */ - if (all) - formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; - formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; - formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; - } - else { - n += 3; - if (all) - n += 1; - } -#if FEATURE_EXT_texture_sRGB - if (ctx->Extensions.EXT_texture_sRGB) { - if (formats) { - if (all) { - /* according to sRGB spec, these should not be returned - via the GL_COMPRESSED_TEXTURE_FORMATS query as they - aren't really general purpose */ - formats[n++] = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; - formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; - } - } - else { - if (all) - n += 4; - } - } -#endif /* FEATURE_EXT_texture_sRGB */ + else { + n += 2; + } + } + if (ctx->Extensions.EXT_texture_compression_s3tc) { + if (formats) { + formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; + /* This format has some restrictions/limitations and so should + * not be returned via the GL_COMPRESSED_TEXTURE_FORMATS query. + * Specifically, all transparent pixels become black. NVIDIA + * omits this format too. + */ + if (all) + formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; + formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; + formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; } - if (ctx->Extensions.S3_s3tc) { - if (formats) { - formats[n++] = GL_RGB_S3TC; - formats[n++] = GL_RGB4_S3TC; - formats[n++] = GL_RGBA_S3TC; - formats[n++] = GL_RGBA4_S3TC; - } - else { - n += 4; - } + else { + n += 3; + if (all) + n += 1; + } + } + if (ctx->Extensions.S3_s3tc) { + if (formats) { + formats[n++] = GL_RGB_S3TC; + formats[n++] = GL_RGB4_S3TC; + formats[n++] = GL_RGBA_S3TC; + formats[n++] = GL_RGBA4_S3TC; + } + else { + n += 4; } } - return n; -} - - - -/** - * 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; + if (ctx->Extensions.EXT_texture_sRGB) { + if (formats) { + formats[n++] = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT; + formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT; + formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; + formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; + } + else { + n += 4; + } } +#endif /* FEATURE_EXT_texture_sRGB */ + return n; } /** - * 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. + * 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; }