diff options
| author | Brian Paul <brianp@vmware.com> | 2010-04-23 11:58:52 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2010-04-23 12:29:31 -0600 |
| commit | 3643841079a1413695172d0e5dd5e0a5f2e22945 (patch) | |
| tree | b41aceb1e75c924250f13b9343980f057ee8827a /src/mesa | |
| parent | f855193796b834e9f06775f8a7130837d1f86f95 (diff) | |
mesa: faster, simpler is_compressed_format()
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/teximage.c | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index b31ca86f11..b7cd5ab2f9 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -358,30 +358,36 @@ _mesa_base_tex_format( GLcontext *ctx, GLint internalFormat ) /** - * Test if it is a supported compressed format. - * + * Test if a texture format is a supported compressed format. * \param internalFormat the internal format token provided by the user. - * - * \ret GL_TRUE if \p internalFormat is a supported compressed format, or - * GL_FALSE otherwise. - * - * Currently only GL_COMPRESSED_RGB_FXT1_3DFX and GL_COMPRESSED_RGBA_FXT1_3DFX - * are supported. + * \return GL_TRUE if compressed, GL_FALSE if uncompressed */ static GLboolean is_compressed_format(GLcontext *ctx, GLenum internalFormat) { - GLint supported[100]; /* 100 should be plenty */ - GLuint i, n; - - n = _mesa_get_compressed_formats(ctx, supported, GL_TRUE); - ASSERT(n < 100); - for (i = 0; i < n; i++) { - if ((GLint) internalFormat == supported[i]) { - return GL_TRUE; - } + switch (internalFormat) { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + return ctx->Extensions.EXT_texture_compression_s3tc; + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + return ctx->Extensions.S3_s3tc; + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + return ctx->Extensions.EXT_texture_sRGB + && ctx->Extensions.EXT_texture_compression_s3tc; + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + return ctx->Extensions.TDFX_texture_compression_FXT1; + default: + return GL_FALSE; } - return GL_FALSE; } |