#version 430 uniform mat4 projMatrix; uniform mat4 viewMatrix; in vec4 outColor; in vec2 outTex; out vec4 color; void main(void) { //color = outColor * (length(outTex - vec2(0.5, 0.5)) + 0.5); color = outColor * (max(abs(outTex.y - 0.5), abs(outTex.x - 0.5)) + 0.2); }