<cat>shader</cat> <shader> <description>The shader used for screenspace effects.</description> <parameters> <item name="texturealpha" type="boolean">Use Texture Alpha</item> <item name="vertexalpha" type="boolean">Use Vertex Alpha</item> <item name="vertexcolor" type="boolean">Use Vertex Color</item> <item name="blur" type="number">Blur this buffer</item> </parameters> </shader>