void main() {
	                float t_min = 0.01;
	                float t_max = 1000.0;
	                vec3 origin = vec3(0.0, 0.0, 0.0);
	                vec3 direction = vec3(in_uv * 1.0, 1.0);

                    rayQueryEXT ray_query;
                    rayQueryInitializeEXT(
                        ray_query,
                        top_level_acceleration_structure,
                        gl_RayFlagsTerminateOnFirstHitEXT,
                        0xFF,
                        origin,
                        t_min,
                        direction,
                        t_max
                    );
                    rayQueryProceedEXT(ray_query);

                    if (rayQueryGetIntersectionTypeEXT(ray_query, true) == gl_RayQueryCommittedIntersectionNoneEXT) {
                        // miss
                        f_color = vec4(0.0, 0.0, 0.0, 1.0);
                    } else {
                        // hit
                        f_color = vec4(1.0, 0.0, 0.0, 1.0);
                    }
                }