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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
// ospray
#include "Geometry.ih"
#include "common/Data.ih"
// c++ shared
#include "SubdivisionShared.h"
OSPRAY_BEGIN_ISPC_NAMESPACE
void Subdivision_postIntersect(const Geometry *uniform _self,
varying DifferentialGeometry &dg,
const varying Ray &ray,
uniform int64 flags)
{
Subdivision *uniform self = (Subdivision * uniform) _self;
dg.Ng = dg.Ns = ray.Ng;
flags &= self->flagMask;
if (flags & DG_NS) {
vec3f dPdu, dPdv;
rtcInterpolateV1(self->geom,
ray.primID,
ray.u,
ray.v,
RTC_BUFFER_TYPE_VERTEX,
0,
NULL,
&dPdu.x,
&dPdv.x,
3);
dg.Ns = cross(dPdu, dPdv);
}
if (flags & DG_COLOR) {
rtcInterpolateV0(self->geom,
ray.primID,
ray.u,
ray.v,
RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE,
0,
&dg.color.x,
4);
}
if (flags & DG_TEXCOORD) {
rtcInterpolateV0(self->geom,
ray.primID,
ray.u,
ray.v,
RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE,
1,
&dg.st.x,
2);
}
}
export void *uniform Subdivision_postIntersect_addr()
{
return (void *uniform)Subdivision_postIntersect;
}
OSPRAY_END_ISPC_NAMESPACE
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