diff options
Diffstat (limited to 'src/mesa/main/teximage.c')
| -rw-r--r-- | src/mesa/main/teximage.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index c0868fabb21..11b1b3043a9 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -2799,6 +2799,37 @@ _mesa_choose_texture_format(struct gl_context *ctx, } } + /* If the application requested compression to an S3TC format but we don't + * have the DTXn library, force a generic compressed format instead. + */ + if (internalFormat != format) { + const GLenum before = internalFormat; + + switch (internalFormat) { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + if (!ctx->Mesa_DXTn) + internalFormat = GL_COMPRESSED_RGB; + break; + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + if (!ctx->Mesa_DXTn) + internalFormat = GL_COMPRESSED_RGBA; + break; + default: + break; + } + + if (before != internalFormat) { + _mesa_warning(ctx, + "DXT compression requested (%s), " + "but libtxc_dxtn library not installed. Using %s " + "instead.", + _mesa_lookup_enum_by_nr(before), + _mesa_lookup_enum_by_nr(internalFormat)); + } + } + /* choose format from scratch */ f = ctx->Driver.ChooseTextureFormat(ctx, texObj->Target, internalFormat, format, type); |