#version 460 struct myType { float data; }; const myType _21[5] = myType[](myType(0.0), myType(1.0), myType(0.0), myType(1.0), myType(0.0)); layout(location = 0) out vec4 o_color; void main() { vec2 uv = gl_FragCoord.xy; int index = int(mod(uv.x, 4.0)); myType elt = _21[index]; if (elt.data > 0.0) { o_color = vec4(0.0, 1.0, 0.0, 1.0); } else { o_color = vec4(1.0, 0.0, 0.0, 1.0); } }