Yes, and I still wonder whether the preprocessor in Processing that rewrites shaders is coming into play here - it’s different for vertex and fragment shaders. GLSL appears even more than Java to be a case of write once, test everywhere! 
Yes, and I still wonder whether the preprocessor in Processing that rewrites shaders is coming into play here - it’s different for vertex and fragment shaders. GLSL appears even more than Java to be a case of write once, test everywhere!