demotool/test/shaders/fullscreen.v.glsl

#version 450 core

//! type vertex

out gl_PerVertex {
	vec4 gl_Position;
};

void main( void )
{
	gl_Position = vec4(
		vec2( gl_VertexID >> 1 , gl_VertexID & 1 ) * 2 - 1 ,
		0 , 1 );
}