mirror of
https://github.com/blender/blender
synced 2026-10-25 03:07:01 +03:00
51977de03a
The 1.0 API is deprecated (though not yet removed) in OpenUSD 26.xx releases. So it's time to migrate. Use of the HdSceneDelegate is mostly removed, except for retrieving the prims. Specific properties of prims are retrieved through schemas rather than querying the scene delegate. The full replacement of HdSceneDelegate is still ongoing in USD itself. In the very latest 26.05 only HdPrman has an experimental option for using the scene index directly, but for example HdStorm does not use it yet. So removing it's use with the current 25.08 in Blender is not expected to be stable enough. Additionally HdRenderer is supposed to replace HdRenderDelegate and its handling of tasks. However even in 26.05 that is only a stub implementation so there is no actual alternative to migrate to. Note that OpenUSD provides a compatibility layer so 1.0 and 2.0 hosts and render delegates can work together. Which means ideally everything keeps working the same, but there are likely some differences anyway. Support for OpenUSD version 23.xx and older was dropped. Pull Request: https://projects.blender.org/blender/blender/pulls/158456
112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/* SPDX-FileCopyrightText: 2022 NVIDIA Corporation
|
|
* SPDX-FileCopyrightText: 2022 Blender Foundation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 */
|
|
|
|
#pragma once
|
|
|
|
#include "hydra/config.h"
|
|
#include "scene/attribute.h"
|
|
|
|
#include <pxr/base/vt/value.h>
|
|
#include <pxr/imaging/hd/dataSource.h>
|
|
#include <pxr/imaging/hd/enums.h>
|
|
#include <pxr/imaging/hd/primvarsSchema.h>
|
|
#include <pxr/imaging/hd/sceneIndex.h>
|
|
#include <pxr/imaging/hd/timeSampleArray.h>
|
|
#include <pxr/imaging/hd/types.h>
|
|
|
|
PXR_NAMESPACE_OPEN_SCOPE
|
|
class HdSceneDelegate;
|
|
class SdfPath;
|
|
class TfToken;
|
|
PXR_NAMESPACE_CLOSE_SCOPE
|
|
|
|
HDCYCLES_NAMESPACE_OPEN_SCOPE
|
|
|
|
/* Prim data source from the scene index, or empty if none is reachable. */
|
|
PXR_NS::HdSceneIndexPrim GetPrim(PXR_NS::HdSceneDelegate *delegate, const PXR_NS::SdfPath &id);
|
|
|
|
/* Typed child data source, or null if missing or of a different type. */
|
|
template<typename T>
|
|
typename PXR_NS::HdTypedSampledDataSource<T>::Handle GetTypedDataSource(
|
|
const PXR_NS::HdContainerDataSourceHandle &container, const PXR_NS::TfToken &name)
|
|
{
|
|
if (!container) {
|
|
return nullptr;
|
|
}
|
|
return PXR_NS::HdTypedSampledDataSource<T>::Cast(container->Get(name));
|
|
}
|
|
|
|
/* Typed value at shutter offset 0, or `fallback` if missing or of a different type. */
|
|
template<typename T>
|
|
T GetTypedValue(const PXR_NS::HdContainerDataSourceHandle &container,
|
|
const PXR_NS::TfToken &name,
|
|
const T &fallback = T())
|
|
{
|
|
if (!container) {
|
|
return fallback;
|
|
}
|
|
const auto base = container->Get(name);
|
|
if (const auto typed = PXR_NS::HdTypedSampledDataSource<T>::Cast(base)) {
|
|
return typed->GetTypedValue(0.0f);
|
|
}
|
|
if (const auto sampled = PXR_NS::HdSampledDataSource::Cast(base)) {
|
|
PXR_NS::VtValue v = sampled->GetValue(0.0f);
|
|
if (v.IsHolding<T>()) {
|
|
return v.UncheckedGet<T>();
|
|
}
|
|
}
|
|
return fallback;
|
|
}
|
|
|
|
/* Sample a typed data source over the shutter into `out`. */
|
|
template<typename T, unsigned int Capacity>
|
|
void SampleTyped(const typename PXR_NS::HdTypedSampledDataSource<T>::Handle &ds,
|
|
float shutterOpen,
|
|
float shutterClose,
|
|
PXR_NS::HdTimeSampleArray<T, Capacity> *out)
|
|
{
|
|
if (!ds) {
|
|
out->Resize(0);
|
|
return;
|
|
}
|
|
std::vector<float> times;
|
|
const bool hasSamples = ds->GetContributingSampleTimesForInterval(
|
|
shutterOpen, shutterClose, ×);
|
|
if (!hasSamples || times.empty()) {
|
|
out->Resize(1);
|
|
out->times[0] = 0.0f;
|
|
out->values[0] = ds->GetTypedValue(0.0f);
|
|
return;
|
|
}
|
|
out->Resize(times.size());
|
|
for (size_t i = 0; i < times.size(); ++i) {
|
|
out->times[i] = times[i];
|
|
out->values[i] = ds->GetTypedValue(times[i]);
|
|
}
|
|
}
|
|
|
|
/* Read a primvar's value at shutter offset 0. */
|
|
PXR_NS::VtValue ReadPrimvar(const PXR_NS::HdPrimvarsSchema &primvars, const PXR_NS::TfToken &name);
|
|
|
|
/* Read a primvar's interpolation. */
|
|
PXR_NS::HdInterpolation ReadPrimvarInterpolation(const PXR_NS::HdPrimvarsSchema &primvars,
|
|
const PXR_NS::TfToken &name);
|
|
|
|
/* Read a primvar's role token. */
|
|
PXR_NS::TfToken ReadPrimvarRole(const PXR_NS::HdPrimvarsSchema &primvars,
|
|
const PXR_NS::TfToken &name);
|
|
|
|
/* Enumerate primvar names whose interpolation matches. */
|
|
PXR_NS::TfTokenVector PrimvarNamesAtInterpolation(const PXR_NS::HdPrimvarsSchema &primvars,
|
|
PXR_NS::HdInterpolation interpolation);
|
|
|
|
/* Convert a Hydra primvar value to a Cycles attribute. */
|
|
void ApplyPrimvars(CCL_NS::AttributeSet &attributes,
|
|
const CCL_NS::ustring &name,
|
|
PXR_NS::VtValue value,
|
|
CCL_NS::AttributeElement elem,
|
|
CCL_NS::AttributeStandard std);
|
|
|
|
HDCYCLES_NAMESPACE_CLOSE_SCOPE
|