#version 450

layout(location = 0) out vec2 outTexCoord;

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