This patch implements the following nodes for the realtime compositor: - Map range node. - Map value node. - Math node. - Normal node. - Alpha convert node. - Separate color node. - Combine color node. - Separate XYZ node. - Combine XYZ node. - Separate RGBA node. - Combine RGBA node. - Separate HSVA node. - Combine HSVA node. - Separate YCCA node. - Combine YUVA node. - Set alpha node. - Switch node. - Switch view node. - RGB to BW node. - Color ramp node. Differential Revision: https://developer.blender.org/D15229 Reviewed By: Clement Foucault