1  uniform sampler2D framebuffer;
 2  
 3  in  vec2 f_uv;
 4  out vec4 fragColor;
 5  
 6  void main() {
 7  	fragColor = texture(
 8  		framebuffer,
 9  		vec2(f_uv.s, 1 - f_uv.t)
10  	);
11  }