#version 460
#extension GL_EXT_ray_tracing : enable

// Benchmark closest-hit: shade from the hit's barycentric coordinates.
// SponzaBench deliberately avoids the descriptor-heap texture sample the
// interactive Sponza example uses — the point here is to measure the
// ray-tracing traversal + frame-loop cost, not texturing, and a
// texture-free hit keeps the host setup portable across library
// revisions (issue #155).
hitAttributeEXT vec2 hitAttrs;
layout(location = 0) rayPayloadInEXT vec3 hitValue;

void main() {
    vec3 bary = vec3(1.0 - hitAttrs.x - hitAttrs.y, hitAttrs.x, hitAttrs.y);
    hitValue = bary;
}