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Thread: frag shader compile error

  1. #1
    Intern Newbie
    Join Date
    Nov 2010

    frag shader compile error


    I have a simple frag shader that is not compiling on OS X. It says it does not know 'fragColor', but that is built-in, isn't it? I use it in all my other frag shaders but this one is giving me this error. Anyone know why that might happen?


    Frag Shader compile log:
    ERROR: 0:9: Use of undeclared identifier 'fragColor'

    Failed to compile frag shader:
    #version 150
    // ShadowMapping

    void main()
    fragColor = vec4(1.0);

  2. #2

  3. #3
    Intern Newbie
    Join Date
    Nov 2010
    Actually, past a certain version of GLSL, you have to define it yourself, like this:

    out vec4 fragColor;

  4. #4
    Member Regular Contributor Nowhere-01's Avatar
    Join Date
    Feb 2011
    i am well aware of that, but you were talking about built in variable, which is gl_FragColor, not fragColor. and there's no declaration of fragColor in supplied shader code, so i assumed a typo. but yes gl_FragColor is deprecated since GLSL 1.2
    Last edited by Nowhere-01; 02-22-2013 at 02:38 PM.

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