+extern void
+_mesa_init_fbobjects(GLcontext *ctx);
+
+extern struct gl_renderbuffer *
+_mesa_lookup_renderbuffer(GLcontext *ctx, GLuint id);
+
+extern struct gl_framebuffer *
+_mesa_lookup_framebuffer(GLcontext *ctx, GLuint id);
+
+extern struct gl_renderbuffer_attachment *
+_mesa_get_attachment(GLcontext *ctx, struct gl_framebuffer *fb,
+ GLenum attachment);
+
+