extern GLboolean
_mesa_is_color_format(GLenum format);
-extern GLboolean
-_mesa_is_index_format(GLenum format);
-
extern GLboolean
_mesa_is_depth_format(GLenum format);
extern GLboolean
_mesa_is_compressed_format(struct gl_context *ctx, GLenum format);
+extern GLboolean
+_mesa_base_format_has_channel(GLenum base_format, GLenum pname);
+
extern GLvoid *
_mesa_image_address( GLuint dimensions,
const struct gl_pixelstore_attrib *packing,