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Diffstat (limited to 'intern/cycles/hydra/geometry.inl')
| -rw-r--r-- | intern/cycles/hydra/geometry.inl | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/intern/cycles/hydra/geometry.inl b/intern/cycles/hydra/geometry.inl new file mode 100644 index 00000000000..007fc6f2667 --- /dev/null +++ b/intern/cycles/hydra/geometry.inl @@ -0,0 +1,247 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright 2022 NVIDIA Corporation + * Copyright 2022 Blender Foundation */ + +#include "hydra/attribute.h" +#include "hydra/geometry.h" +#include "hydra/instancer.h" +#include "hydra/material.h" +#include "hydra/session.h" +#include "scene/geometry.h" +#include "scene/object.h" +#include "scene/scene.h" +#include "util/hash.h" + +#include <pxr/imaging/hd/sceneDelegate.h> + +HDCYCLES_NAMESPACE_OPEN_SCOPE + +extern Transform convert_transform(const GfMatrix4d &matrix); + +template<typename Base, typename CyclesBase> +HdCyclesGeometry<Base, CyclesBase>::HdCyclesGeometry(const SdfPath &rprimId +#if PXR_VERSION < 2102 + , + const SdfPath &instancerId +#endif + ) + : Base(rprimId +#if PXR_VERSION < 2102 + + , + instancerId +#endif + ), + _geomTransform(1.0) +{ +} + +template<typename Base, typename CyclesBase> +void HdCyclesGeometry<Base, CyclesBase>::_InitRepr(const TfToken &reprToken, + HdDirtyBits *dirtyBits) +{ + TF_UNUSED(reprToken); + TF_UNUSED(dirtyBits); +} + +template<typename Base, typename CyclesBase> +HdDirtyBits HdCyclesGeometry<Base, CyclesBase>::GetInitialDirtyBitsMask() const +{ + return HdChangeTracker::DirtyPrimID | HdChangeTracker::DirtyTransform | + HdChangeTracker::DirtyMaterialId | HdChangeTracker::DirtyVisibility | + HdChangeTracker::DirtyInstancer; +} + +template<typename Base, typename CyclesBase> +HdDirtyBits HdCyclesGeometry<Base, CyclesBase>::_PropagateDirtyBits(HdDirtyBits bits) const +{ + return bits; +} + +template<typename Base, typename CyclesBase> +void HdCyclesGeometry<Base, CyclesBase>::Sync(HdSceneDelegate *sceneDelegate, + HdRenderParam *renderParam, + HdDirtyBits *dirtyBits, + const TfToken &reprToken) +{ + TF_UNUSED(reprToken); + + if (*dirtyBits == HdChangeTracker::Clean) { + return; + } + + Initialize(renderParam); + +#if PXR_VERSION >= 2102 + Base::_UpdateInstancer(sceneDelegate, dirtyBits); + HdInstancer::_SyncInstancerAndParents(sceneDelegate->GetRenderIndex(), Base::GetInstancerId()); +#endif + Base::_UpdateVisibility(sceneDelegate, dirtyBits); + + const SceneLock lock(renderParam); + + if (*dirtyBits & HdChangeTracker::DirtyMaterialId) { +#if HD_API_VERSION >= 37 && PXR_VERSION >= 2105 + Base::SetMaterialId(sceneDelegate->GetMaterialId(Base::GetId())); +#else + Base::_SetMaterialId(sceneDelegate->GetRenderIndex().GetChangeTracker(), + sceneDelegate->GetMaterialId(Base::GetId())); +#endif + + const auto material = static_cast<const HdCyclesMaterial *>( + sceneDelegate->GetRenderIndex().GetSprim(HdPrimTypeTokens->material, + Base::GetMaterialId())); + + array<Node *> usedShaders(1); + if (material && material->GetCyclesShader()) { + usedShaders[0] = material->GetCyclesShader(); + } + else { + usedShaders[0] = lock.scene->default_surface; + } + + for (Node *shader : usedShaders) { + static_cast<Shader *>(shader)->tag_used(lock.scene); + } + + _geom->set_used_shaders(usedShaders); + } + + const SdfPath &id = Base::GetId(); + + if (HdChangeTracker::IsPrimIdDirty(*dirtyBits, id)) { + // This needs to be corrected in the AOV + _instances[0]->set_pass_id(Base::GetPrimId() + 1); + } + + if (HdChangeTracker::IsTransformDirty(*dirtyBits, id)) { + _geomTransform = sceneDelegate->GetTransform(id); + } + + if (HdChangeTracker::IsTransformDirty(*dirtyBits, id) || + HdChangeTracker::IsInstancerDirty(*dirtyBits, id)) { + const auto instancer = static_cast<HdCyclesInstancer *>( + sceneDelegate->GetRenderIndex().GetInstancer(Base::GetInstancerId())); + + // Make sure the first object attribute is the instanceId + assert(_instances[0]->attributes.size() >= 1 && + _instances[0]->attributes.front().name() == HdAovTokens->instanceId.GetString()); + + VtMatrix4dArray transforms; + if (instancer) { + transforms = instancer->ComputeInstanceTransforms(id); + _instances[0]->attributes.front() = ParamValue(HdAovTokens->instanceId.GetString(), +0.0f); + } + else { + // Default to a single instance with an identity transform + transforms.push_back(GfMatrix4d(1.0)); + _instances[0]->attributes.front() = ParamValue(HdAovTokens->instanceId.GetString(), -1.0f); + } + + const size_t oldSize = _instances.size(); + const size_t newSize = transforms.size(); + + // Resize instance list + for (size_t i = newSize; i < oldSize; ++i) { + lock.scene->delete_node(_instances[i]); + } + _instances.resize(newSize); + for (size_t i = oldSize; i < newSize; ++i) { + _instances[i] = lock.scene->create_node<Object>(); + InitializeInstance(static_cast<int>(i)); + } + + // Update transforms of all instances + for (size_t i = 0; i < transforms.size(); ++i) { + const Transform tfm = convert_transform(_geomTransform * transforms[i]); + _instances[i]->set_tfm(tfm); + } + } + + if (HdChangeTracker::IsVisibilityDirty(*dirtyBits, id)) { + for (Object *instance : _instances) { + instance->set_visibility(Base::IsVisible() ? ~0 : 0); + } + } + + // Must happen after material ID update, so that attribute decisions can be made + // based on it (e.g. check whether an attribute is actually needed) + bool rebuild = false; + Populate(sceneDelegate, *dirtyBits, rebuild); + + if (_geom->is_modified() || rebuild) { + _geom->tag_update(lock.scene, rebuild); + } + + for (Object *instance : _instances) { + instance->tag_update(lock.scene); + } + + *dirtyBits = HdChangeTracker::Clean; +} + +template<typename Base, typename CyclesBase> +void HdCyclesGeometry<Base, CyclesBase>::Finalize(HdRenderParam *renderParam) +{ + if (!_geom && _instances.empty()) { + return; + } + + const SceneLock lock(renderParam); + + lock.scene->delete_node(_geom); + _geom = nullptr; + + lock.scene->delete_nodes(set<Object *>(_instances.begin(), _instances.end())); + _instances.clear(); + _instances.shrink_to_fit(); +} + +template<typename Base, typename CyclesBase> +void HdCyclesGeometry<Base, CyclesBase>::Initialize(HdRenderParam *renderParam) +{ + if (_geom) { + return; + } + + const SceneLock lock(renderParam); + + // Create geometry + _geom = lock.scene->create_node<CyclesBase>(); + _geom->name = Base::GetId().GetString(); + + // Create default instance + _instances.push_back(lock.scene->create_node<Object>()); + InitializeInstance(0); +} + +template<typename Base, typename CyclesBase> +void HdCyclesGeometry<Base, CyclesBase>::InitializeInstance(int index) +{ + Object *instance = _instances[index]; + instance->set_geometry(_geom); + + instance->attributes.emplace_back(HdAovTokens->instanceId.GetString(), + _instances.size() == 1 ? -1.0f : static_cast<float>(index)); + + instance->set_color(make_float3(0.8f, 0.8f, 0.8f)); + instance->set_random_id(hash_uint2(hash_string(_geom->name.c_str()), index)); +} + +template<typename Base, typename CyclesBase> +HdInterpolation HdCyclesGeometry<Base, CyclesBase>::GetPrimvarInterpolation( + HdSceneDelegate *sceneDelegate, const TfToken &name) const +{ + for (int i = 0; i < HdInterpolationCount; ++i) { + for (const HdPrimvarDescriptor &desc : + Base::GetPrimvarDescriptors(sceneDelegate, static_cast<HdInterpolation>(i))) { + if (desc.name == name) { + return static_cast<HdInterpolation>(i); + } + } + } + + return HdInterpolationCount; +} + +HDCYCLES_NAMESPACE_CLOSE_SCOPE |