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Hello, how can I generate a preprocessor define for a pass in a ULON material which depends on a state or a condition? The only way to do that I have encountered in the SDK is the following snippet from the particle base material: Pass ambient if[!ambient] { Vertex = "core/shaders/particles/vertex/ambient.vert" Fragment = "core/shaders/particles/fragment/ambient.frag" } Pass ambient if[ambient] <defines="AMBIENT"> { Vertex = "core/shaders/particles/vertex/ambient.vert" Fragment = "core/shaders/particles/fragment/ambient.frag" } This works well if I want to define something based on a single state, but the number of passes quickly grows when I increase the number of states. Alternatively, is there support for defines affecting all shaders in the ULON material format, something like <state name="some_switch" items="state0,state1,state2" defines="name_items"/> ? Many thanks Helmut