1  #version 420
 2  
 3  // file: quad_centering.vs.glsl
 4  // author: chmod777
 5  // license: GNU AGPL v3
 6  
 7  layout (location = 0) in vec2 coords;
 8  layout (location = 1) in vec2 uv;
 9  
10  uniform vec2 viewGeometry;
11  uniform vec2 screenPos;
12  uniform vec2 imgSize;
13  
14  out DataVS {
15  	vec2 uv;
16  } vs_out;
17  
18  void main() {
19  	vs_out.uv = uv;
20  	vec2 coord = fma(coords, imgSize, screenPos) / viewGeometry;
21  	coord = fma(coord, vec2(2.0), vec2(-1.0));
22  	gl_Position = vec4(coord, 0, 1);
23  }