fc2c22e90c
Add "stageMetersPerUnit" render setting for USD files that have that set to something other than the default (e.g. exported by Blender). And fix a crash when an application creates a Hydra render pass on a thread that does not have an OpenGL context current.
126 lines
3.8 KiB
C++
126 lines
3.8 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/usd/usdGeom/metrics.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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settings_map.insert(std::make_pair(HdCyclesRenderSettingsTokens->stageMetersPerUnit,
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VtValue(UsdGeomGetStageMetersPerUnit(stage))));
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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(render_delegate.GetRenderParam(), 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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