demotool/shaders/fsquad.glsl

12 lines
170 B
GLSL

#version 450 core
out gl_PerVertex {
vec4 gl_Position;
};
void main( void )
{
gl_Position = vec4(
vec2( gl_VertexID >> 1 , gl_VertexID & 1 ) * 2 - 1 ,
0 , 1 );
}