#version 460

#extension GL_ARB_separate_shader_objects : enable
#extension GL_EXT_ray_query : enable

layout(location = 0) in  vec4 inPos;
layout(location = 0) out vec4 outColor;

layout(binding = 0) uniform accelerationStructureEXT topLevelAS;

uint doRay(vec3 rayOrigin, vec3 rayDirection, float rayDistance) {
	rayQueryEXT rayQuery;
	rayQueryInitializeEXT(rayQuery, topLevelAS, gl_RayFlagsTerminateOnFirstHitEXT, 0xFF,
			rayOrigin, 0.001, rayDirection, rayDistance);

	while(rayQueryProceedEXT(rayQuery))
		;

	return rayQueryGetIntersectionTypeEXT(rayQuery, true);
}

void main() {
	vec3  rayOrigin    = vec3(inPos.xy*4.0-vec2(2.0),1.0);
	vec3  rayDirection = vec3(0,0,-1);
	float rayDistance  = 2.0;

	if(doRay(rayOrigin,rayDirection,rayDistance) == gl_RayQueryCommittedIntersectionNoneEXT)
		discard;

	outColor = inPos;
}