output-index ( program-instance output-name -- index ) (original) (raw)
output-index ( program-instance output-name -- index )
Inputs
program-instance | a program-instance |
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output-name | a string |
Outputs
index | an integer |
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Word description
Returns the numeric index of the fragment shader output named output-name in program-instance.
Notes
Named fragment shader outputs require OpenGL 3.0 or later and GLSL 1.30 or later, or OpenGL 2.0 or later and GLSL 1.20 or earlier with the GL_EXT_gpu_shader4 extension.
Definition
USING: accessors kernel opengl.gl ;
MEMO: output-index ( program-instance output-name -- index )
[ handle>> ] dip glGetFragDataLocation ;