Order of the shaders

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Order of the shaders

Postby Pityurko » Fri May 31, 2019 5:29 am


I have a WAD containing various shaders. My only problem is, that I don't know how to ensure, that these shaders get applied in the right order. For example how can I make sure, that my film grain shader is applied on top of my screen warping shader (so that the grain itself stays unwarped). Or does this totally depend on the shader itself?
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Re: Order of the shaders

Postby difficultoldstuff » Wed Dec 09, 2020 7:21 am

Sorry to revive an oldie, but I was googling around for the same answer and I stumbled upon a solution by some experimentation:

The order of GLSL shaders seems to be applied as specified in the GLDEFS lump. If you declare a shader first it's gonna be first.
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