#version 150 uniform sampler2D rt0; uniform sampler2D rt1; uniform sampler2D rt2; uniform sampler2D rt3; in vec2 uv; out vec4 fragColour; void main(void) { //fragColour = texture(rt0, uv); fragColour = texture(rt1, uv); //fragColour = texture(rt2, uv); //fragColour = texture(rt3, uv); }