Fixed-function GL differentiates point and directional lights with the w of the position. Is there a branchless way to do that in a shader?
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@warrenm Is it cheating to calculate both and then multiply one by w and one by (1.0 - w)?
@CastIrony I think not. That’s definitely a common trick in the branchless code toolbox.
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@warrenm I just realized I can do better. A directional light is just a point light whose position varies depending on where it's measured. -
@CastIrony I’m concerned about implementing falloff with this approach, but it’s ripe for further thought. Thanks for the suggestions!
End of conversation
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