How to define constant array in GLSL (OpenGL ES 2.0)?
fragment-shader, glsl, iphone, opengl-es
Solution
From the OpenGL ES SL 1.0 spec, paragraph `4.1.9 Arrays` (p. 24):
There is no mechanism for initializing arrays at declaration time from within a shader.
Note that this has been intentionally left out. According to this post, the OpenGL ES SL version for OpenGL ES 2 is based on OpenGL SL 1.2. The same paragraph (p. 20) contains:
Arrays can have initializers formed from array constructors:
float a[5] = float[5](3.4, 4.2, 5.0, 5.2, 1.1);
float a[5] = float[](3.4, 4.2, 5.0, 5.2, 1.1); // same thing
Problem
I just want to store an array of weights that needs to every fragment calculation. This: ``` float weights[5] = float[5](3.4, 4.2, 5.0, 5.2, 1.1); ``` Just throws this: ``` ERROR: 0:30: ']' : syntax error syntax error ERROR: 0:30: ';' : syntax error syntax error ```