1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include "hydra/file_reader.h"
#include "hydra/camera.h"
#include "hydra/render_delegate.h"
#include "util/path.h"
#include "util/unique_ptr.h"
#include "scene/scene.h"
#include <pxr/base/plug/registry.h>
#include <pxr/imaging/hd/dirtyList.h>
#include <pxr/imaging/hd/renderDelegate.h>
#include <pxr/imaging/hd/renderIndex.h>
#include <pxr/imaging/hd/rprimCollection.h>
#include <pxr/imaging/hd/task.h>
#include <pxr/usd/usd/stage.h>
#include <pxr/usd/usdGeom/camera.h>
#include <pxr/usd/usdGeom/metrics.h>
#include <pxr/usdImaging/usdImaging/delegate.h>
HDCYCLES_NAMESPACE_OPEN_SCOPE
/* Dummy task whose only purpose is to provide render tag tokens to the render index. */
class DummyHdTask : public HdTask {
public:
DummyHdTask(HdSceneDelegate *delegate, SdfPath const &id)
: HdTask(id), tags({HdRenderTagTokens->geometry, HdRenderTagTokens->render})
{
}
protected:
void Sync(HdSceneDelegate *delegate, HdTaskContext *ctx, HdDirtyBits *dirtyBits) override
{
}
void Prepare(HdTaskContext *ctx, HdRenderIndex *render_index) override
{
}
void Execute(HdTaskContext *ctx) override
{
}
const TfTokenVector &GetRenderTags() const override
{
return tags;
}
TfTokenVector tags;
};
void HdCyclesFileReader::read(Session *session, const char *filepath, const bool use_camera)
{
/* Initialize USD. */
PlugRegistry::GetInstance().RegisterPlugins(path_get("usd"));
/* Open Stage. */
UsdStageRefPtr stage = UsdStage::Open(filepath);
if (!stage) {
fprintf(stderr, "%s read error\n", filepath);
return;
}
/* Init paths. */
SdfPath root_path = SdfPath::AbsoluteRootPath();
SdfPath task_path("/_hdCycles/DummyHdTask");
/* Create render delegate. */
HdRenderSettingsMap settings_map;
settings_map.insert(std::make_pair(HdCyclesRenderSettingsTokens->stageMetersPerUnit,
VtValue(UsdGeomGetStageMetersPerUnit(stage))));
HdCyclesDelegate render_delegate(settings_map, session, true);
/* Create render index and scene delegate. */
unique_ptr<HdRenderIndex> render_index(HdRenderIndex::New(&render_delegate, {}));
unique_ptr<UsdImagingDelegate> scene_delegate = make_unique<UsdImagingDelegate>(
render_index.get(), root_path);
/* Add render tags and collection to render index. */
HdRprimCollection collection(HdTokens->geometry, HdReprSelector(HdReprTokens->smoothHull));
collection.SetRootPath(root_path);
render_index->InsertTask<DummyHdTask>(scene_delegate.get(), task_path);
#if PXR_VERSION < 2111
HdDirtyListSharedPtr dirty_list = std::make_shared<HdDirtyList>(collection,
*(render_index.get()));
render_index->EnqueuePrimsToSync(dirty_list, collection);
#else
render_index->EnqueueCollectionToSync(collection);
#endif
/* Create prims. */
const UsdPrim &stage_root = stage->GetPseudoRoot();
scene_delegate->Populate(stage_root.GetStage()->GetPrimAtPath(root_path), {});
/* Sync prims. */
HdTaskContext task_context;
HdTaskSharedPtrVector tasks;
tasks.push_back(render_index->GetTask(task_path));
render_index->SyncAll(&tasks, &task_context);
render_delegate.CommitResources(&render_index->GetChangeTracker());
/* Use first camera in stage.
* TODO: get camera from UsdRender if available. */
if (use_camera) {
for (UsdPrim const &prim : stage->Traverse()) {
if (prim.IsA<UsdGeomCamera>()) {
HdSprim *sprim = render_index->GetSprim(HdPrimTypeTokens->camera, prim.GetPath());
if (sprim) {
HdCyclesCamera *camera = dynamic_cast<HdCyclesCamera *>(sprim);
camera->ApplyCameraSettings(render_delegate.GetRenderParam(), session->scene->camera);
break;
}
}
}
}
}
HDCYCLES_NAMESPACE_CLOSE_SCOPE
|
