procedural-3d-engine/data/shaders/shadowmapping/quad.vert

#version 450

layout (location = 0) out vec2 outUV;

out gl_PerVertex 
{
	vec4 gl_Position;   
};

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