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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#ifdef OSPRAY_ENABLE_VOLUMES
#include "openvkl/openvkl.h"
// ospray
#include "VolumetricModel.h"
namespace ospray {
VolumetricModel::VolumetricModel(api::ISPCDevice &device, Volume *_volume)
: AddStructShared(device.getDRTDevice(), device), volumeAPI(_volume)
{
managedObjectType = OSP_VOLUMETRIC_MODEL;
}
VolumetricModel::~VolumetricModel()
{
if (vklIntervalContext)
vklRelease(vklIntervalContext);
}
std::string VolumetricModel::toString() const
{
return "ospray::VolumetricModel";
}
void VolumetricModel::commit()
{
volume = getParamObject<Volume>("volume", volumeAPI.ptr);
if (!volume)
throw std::runtime_error(toString() + " received NULL 'volume'");
transferFunction = getParamObject<TransferFunction>("transferFunction");
if (!transferFunction)
throw std::runtime_error(toString() + " must have 'transferFunction'");
// create value selector using transfer function and pass to volume
if (volume->vklVolume) {
if (vklIntervalContext) {
vklRelease(vklIntervalContext);
}
vklIntervalContext = vklNewIntervalIteratorContext(volume->vklSampler);
std::vector<range1f> valueRanges =
transferFunction->getPositiveOpacityValueRanges();
if (valueRanges.empty()) {
// volume made completely transparent and could be removed, which is
// awkward here
// set an "empty" interesting value range instead, which will lead to a
// quick out during volume iteration
valueRanges.push_back(range1f(neg_inf, neg_inf));
}
VKLData valueRangeData = vklNewData(getISPCDevice().getVklDevice(),
valueRanges.size(),
VKL_BOX1F,
valueRanges.data());
vklSetData(vklIntervalContext, "valueRanges", valueRangeData);
vklRelease(valueRangeData);
vklCommit(vklIntervalContext);
// Pass interval context to ISPC
getSh()->vklIntervalContext = vklIntervalContext;
}
// Finish getting/setting other appearance information
volumeBounds = volume->bounds;
// Initialize shared structure
getSh()->volume = getVolume()->getSh();
getSh()->transferFunction = transferFunction->getSh();
getSh()->boundingBox = volumeBounds;
getSh()->densityScale = getParam<float>("densityScale", 1.f);
getSh()->anisotropy = getParam<float>("anisotropy", 0.f);
getSh()->gradientShadingScale = getParam<float>("gradientShadingScale", 0.f);
getSh()->userID = getParam<uint32>("id", RTC_INVALID_GEOMETRY_ID);
featureFlagsOther = FFO_VOLUME_IN_SCENE;
if (getSh()->gradientShadingScale > 0.f)
featureFlagsOther |= FFO_VOLUME_SCIVIS_SHADING;
}
RTCGeometry VolumetricModel::embreeGeometryHandle() const
{
return volume->embreeGeometry;
}
box3f VolumetricModel::bounds() const
{
return volumeBounds;
}
Ref<Volume> VolumetricModel::getVolume() const
{
return volume;
}
OSPTYPEFOR_DEFINITION(VolumetricModel *);
} // namespace ospray
#endif
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