void set_blend(const Blend *);
const Framebuffer *get_framebuffer() const { return framebuffer; }
+ const Rect *get_viewport() const { return viewport; }
const Program *get_shader_program() const { return shprog; }
const VertexSetup *get_vertex_setup() const { return vertex_setup; }
FaceWinding get_front_face() const { return front_face; }