September 2018
Intermediate to advanced
472 pages
15h 36m
English
Content preview from OpenGL 4 Shading Language Cookbook - Third Edition
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As with vertex attributes, a uniform variable is not considered active unless it is determined by the GLSL linker that it will be used within the shader.
The previous code is only valid for OpenGL 4.3 and later. Alternatively, you can achieve similar results using the glGetProgramiv, glGetActiveUniform, glGetUniformLocation, and glGetActiveUniformName functions.
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