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pragma multi_compile in cginc

Discussion in 'Shaders' started by trad_emark, Jun 4, 2018.

  1. trad_emark

    trad_emark

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    Is it possible to define shader keywords in cginc shaders?
     
    trad_emark, Jun 4, 2018
    #1

  2. aleksandrk

    aleksandrk

    Unity Technologies

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    Hi!
    No, only the shader source itself is scanned.
     
    aleksandrk, Jun 4, 2018
    #2

  3. trad_emark

    trad_emark

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    Thanks for the answer. May I suggest to put this information into documentation?
     
    trad_emark, Jun 4, 2018
    #3

  4. aleksandrk

    aleksandrk

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    Sure, I'll add it.
     
    aleksandrk, Jun 5, 2018
    #4
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  5. joshuacwilde

    joshuacwilde

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    @aleksandrk
    Does the unity standard shader dynamically add all of the multi compiles then, or how does that work? it is a bit tedious to add multi compiles to lots of shaders when we could just include the cginc.
     
    joshuacwilde, Sep 20, 2020
    #5

  6. aleksandrk

    aleksandrk

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    Surface shaders add those when generating code, yes.
    As of Unity 2020.2 it's possible to put #pragma directives in includes, but those have to be included using #include_with_pragmas directive. This also requires turning Caching preprocessor on in Editor project settings.
     
    aleksandrk, Sep 20, 2020
    #6

  7. joshuacwilde

    joshuacwilde

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    Wonderful! I'll keep that in mind for when we upgrade. Thanks Aleks!
     
    joshuacwilde, Sep 21, 2020
    #7
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