#version 310 es precision mediump float; layout(location = 0) out vec4 FragColor; void main() { float v; bool written = false; for (int j = 0; j < 10; j++) { for (int i = 0; i < 4; i++) { float w = 0.0; if (written) w += v; else v = 20.0; v += float(i); written = true; } } FragColor = vec4(1.0); }