MJ PS Channel Packer

Pack multiple grayscale maps into the RGBA channels of a single texture for PBR game materials. Assign any open document or layer to the Red, Green, Blue, or Alpha channel via an intuitive ScriptUI dialog. Includes presets for common game engine layouts (PBR Metallic, PBR Specular, Unity HDRP Mask, Unreal ORM). Quick-size buttons for standard power-of-two resolutions. Outputs PNG and optionally 32-bit TGA with embedded alpha.