Brecht Van Lommel
9b92ce9dc0
Long term, this should replace the XML format. This reuses the Hydra render delegate implementation, and so supports the same features. The same command line options and GUI work for both XML and USD also. The implementation of this is still disabled, waiting for some refactoring of USD library linking. However we want the Cycles code to be in sync between repositories for the 3.2 release. Ref T96731
122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#include "hydra/file_reader.h"
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#include "hydra/camera.h"
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#include "hydra/render_delegate.h"
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#include "util/path.h"
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#include "util/unique_ptr.h"
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#include "scene/scene.h"
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#include <pxr/base/plug/registry.h>
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#include <pxr/imaging/hd/dirtyList.h>
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#include <pxr/imaging/hd/renderDelegate.h>
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#include <pxr/imaging/hd/renderIndex.h>
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#include <pxr/imaging/hd/rprimCollection.h>
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#include <pxr/imaging/hd/task.h>
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#include <pxr/usd/usd/stage.h>
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#include <pxr/usd/usdGeom/camera.h>
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#include <pxr/usdImaging/usdImaging/delegate.h>
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HDCYCLES_NAMESPACE_OPEN_SCOPE
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/* Dummy task whose only purpose is to provide render tag tokens to the render index. */
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class DummyHdTask : public HdTask {
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public:
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DummyHdTask(HdSceneDelegate *delegate, SdfPath const &id)
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: HdTask(id), tags({HdRenderTagTokens->geometry, HdRenderTagTokens->render})
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{
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}
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protected:
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void Sync(HdSceneDelegate *delegate, HdTaskContext *ctx, HdDirtyBits *dirtyBits) override
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{
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}
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void Prepare(HdTaskContext *ctx, HdRenderIndex *render_index) override
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{
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}
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void Execute(HdTaskContext *ctx) override
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{
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}
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const TfTokenVector &GetRenderTags() const override
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{
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return tags;
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}
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TfTokenVector tags;
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};
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void HdCyclesFileReader::read(Session *session, const char *filepath, const bool use_camera)
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{
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/* Initialize USD. */
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PlugRegistry::GetInstance().RegisterPlugins(path_get("usd"));
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/* Open Stage. */
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UsdStageRefPtr stage = UsdStage::Open(filepath);
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if (!stage) {
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fprintf(stderr, "%s read error\n", filepath);
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return;
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}
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/* Init paths. */
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SdfPath root_path = SdfPath::AbsoluteRootPath();
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SdfPath task_path("/_hdCycles/DummyHdTask");
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/* Create render delegate. */
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HdRenderSettingsMap settings_map;
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HdCyclesDelegate render_delegate(settings_map, session, true);
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/* Create render index and scene delegate. */
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unique_ptr<HdRenderIndex> render_index(HdRenderIndex::New(&render_delegate, {}));
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unique_ptr<UsdImagingDelegate> scene_delegate = make_unique<UsdImagingDelegate>(
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render_index.get(), root_path);
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/* Add render tags and collection to render index. */
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HdRprimCollection collection(HdTokens->geometry, HdReprSelector(HdReprTokens->smoothHull));
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collection.SetRootPath(root_path);
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render_index->InsertTask<DummyHdTask>(scene_delegate.get(), task_path);
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#if PXR_VERSION < 2111
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HdDirtyListSharedPtr dirty_list = std::make_shared<HdDirtyList>(collection,
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*(render_index.get()));
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render_index->EnqueuePrimsToSync(dirty_list, collection);
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#else
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render_index->EnqueueCollectionToSync(collection);
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#endif
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/* Create prims. */
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const UsdPrim &stage_root = stage->GetPseudoRoot();
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scene_delegate->Populate(stage_root.GetStage()->GetPrimAtPath(root_path), {});
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/* Sync prims. */
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HdTaskContext task_context;
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HdTaskSharedPtrVector tasks;
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tasks.push_back(render_index->GetTask(task_path));
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render_index->SyncAll(&tasks, &task_context);
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render_delegate.CommitResources(&render_index->GetChangeTracker());
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/* Use first camera in stage.
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* TODO: get camera from UsdRender if available. */
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if (use_camera) {
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for (UsdPrim const &prim : stage->Traverse()) {
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if (prim.IsA<UsdGeomCamera>()) {
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HdSprim *sprim = render_index->GetSprim(HdPrimTypeTokens->camera, prim.GetPath());
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if (sprim) {
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HdCyclesCamera *camera = dynamic_cast<HdCyclesCamera *>(sprim);
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camera->ApplyCameraSettings(session->scene->camera);
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break;
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}
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}
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}
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}
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}
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HDCYCLES_NAMESPACE_CLOSE_SCOPE
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