#version 460 core

out VS_OUT {
    vec2 texcoord;
} vs_out;

void main() {
    // Output a single full-screen triangle
    vec2 verts[3] = vec2[3](
        vec2(-1,-1),
        vec2( 3,-1),
        vec2(-1, 3)
    );
    gl_Position = vec4(verts[gl_VertexID], 0, 1);
    vs_out.texcoord = 0.5 * gl_Position.xy + vec2(0.5);
}