#version 450

/* layout (location = 0) out vec2 outUV; */

void main()
{
  vec2 outUV = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
  gl_Position = vec4(outUV * 2.0f - 1.0f, 0.0f, 1.0f);
}