#version 460
#extension GL_EXT_ray_query : enable
#extension GL_EXT_opacity_micromap_ray_query_mode : enable

// Bare specialization-constant form where the built-in is also read in the shader body. Reading it
// materializes the specialization constant, so the OpacityMicromapIdKHR execution mode must reference
// that same constant (not a synthesized duplicate) - i.e. a single SpecId is emitted.
layout(constant_id = 2) gl_EnableOpacityMicromapEXT;

layout(set = 0, binding = 0) uniform accelerationStructureEXT topLevelAS;
layout(set = 0, binding = 1, std430) buffer Out { uint enabled; } outBuf;

void main()
{
    rayQueryEXT rq;
    rayQueryInitializeEXT(rq, topLevelAS, gl_RayFlagsNoneEXT, 0xFFu,
                          vec3(0.0), 0.1, vec3(0.0, 0.0, 1.0), 100.0);
    rayQueryProceedEXT(rq);
    outBuf.enabled = gl_EnableOpacityMicromapEXT ? 1u : 0u;
}