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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "Metal.h"
#include "common/Data.h"
#ifndef OSPRAY_TARGET_SYCL
// ispc
#include "render/materials/Metal_ispc.h"
#endif
namespace ospray {
namespace pathtracer {
Metal::Metal(api::ISPCDevice &device)
: AddStructShared(device.getDRTDevice(), device, FFO_MATERIAL_METAL)
{
#ifndef OSPRAY_TARGET_SYCL
getSh()->super.getBSDF =
reinterpret_cast<ispc::Material_GetBSDFFunc>(ispc::Metal_getBSDF_addr());
#endif
}
std::string Metal::toString() const
{
return "ospray::pathtracer::Metal";
}
void Metal::commit()
{
auto ior = getParamDataT<vec3f>("ior");
const vec3f &eta = getParam<vec3f>("eta", vec3f(RGB_AL_ETA));
const vec3f &k = getParam<vec3f>("k", vec3f(RGB_AL_K));
roughness = getMaterialParam1f("roughness", 0.1f);
if (ior) {
// resample, relies on ordered samples
spectrum etaResampled;
spectrum kResampled;
auto iorP = ior->begin();
auto iorPrev = *iorP;
const auto iorLast = ior->end();
float wl = SPECTRUM_FIRSTWL;
for (int l = 0; l < SPECTRUM_SAMPLES; wl += SPECTRUM_SPACING, l++) {
for (; iorP != iorLast && iorP->x < wl; iorP++)
iorPrev = *iorP;
if (iorP->x == iorPrev.x) {
etaResampled[l] = iorPrev.y;
kResampled[l] = iorPrev.z;
} else {
auto f = (wl - iorPrev.x) / (iorP->x - iorPrev.x);
etaResampled[l] = (1.f - f) * iorPrev.y + f * iorP->y;
kResampled[l] = (1.f - f) * iorPrev.z + f * iorP->z;
}
}
getSh()->spectral = true;
getSh()->eta = etaResampled;
getSh()->k = kResampled;
} else {
// default to Aluminium, used when ior not given
getSh()->spectral = false;
getSh()->etaRGB = eta;
getSh()->kRGB = k;
}
getSh()->roughness = roughness.factor;
getSh()->roughnessMap = roughness.tex;
}
} // namespace pathtracer
} // namespace ospray
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