legacyDisplayStyleOverrideSceneIndex.h

//
// Copyright 2023 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HDSI_LEGACY_DISPLAY_STYLE_OVERRIDE_SCENE_INDEX_H
#define PXR_IMAGING_HDSI_LEGACY_DISPLAY_STYLE_OVERRIDE_SCENE_INDEX_H
 
#include "pxr/pxr.h"
#include "pxr/imaging/hdsi/api.h"
#include "pxr/imaging/hd/filteringSceneIndex.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
namespace HdsiLegacyDisplayStyleSceneIndex_Impl
{
struct _StyleInfo;
using _StyleInfoSharedPtr = std::shared_ptr<_StyleInfo>;
}
 
TF_DECLARE_REF_PTRS(HdsiLegacyDisplayStyleOverrideSceneIndex);
 
class HdsiLegacyDisplayStyleOverrideSceneIndex :
    public HdSingleInputFilteringSceneIndexBase
{
public:
    HDSI_API
    static HdsiLegacyDisplayStyleOverrideSceneIndexRefPtr
    New(const HdSceneIndexBaseRefPtr &inputSceneIndex);
 
    HDSI_API
    HdSceneIndexPrim GetPrim(const SdfPath &primPath) const override;
 
    HDSI_API
    SdfPathVector GetChildPrimPaths(const SdfPath &primPath) const override;
 
    struct OptionalInt
    {
        bool hasValue = false;
        int value = 0;
 
        operator bool() const { return hasValue; }
        int operator*() const { return value; }
    };
 
    HDSI_API
    void SetRefineLevel(const OptionalInt &refineLevel);
 
    HDSI_API
    void SetCullStyleFallback(const TfToken &cullStyleFallback);
 
protected:
    HdsiLegacyDisplayStyleOverrideSceneIndex(
        const HdSceneIndexBaseRefPtr &inputSceneIndex);
 
    void _PrimsAdded(
        const HdSceneIndexBase &sender,
        const HdSceneIndexObserver::AddedPrimEntries &entries) override;
 
    void _PrimsRemoved(
        const HdSceneIndexBase &sender,
        const HdSceneIndexObserver::RemovedPrimEntries &entries) override;
 
    void _PrimsDirtied(
        const HdSceneIndexBase &sender,
        const HdSceneIndexObserver::DirtiedPrimEntries &entries) override;
 
private:
    void _DirtyAllPrims(const HdDataSourceLocatorSet &locators);
 
    HdsiLegacyDisplayStyleSceneIndex_Impl::
    _StyleInfoSharedPtr const _styleInfo;
 
    HdContainerDataSourceHandle const _overlayDs;
    HdContainerDataSourceHandle const _underlayDs;
};
 
HDSI_API
bool operator==(
    const HdsiLegacyDisplayStyleOverrideSceneIndex::OptionalInt &a,
    const HdsiLegacyDisplayStyleOverrideSceneIndex::OptionalInt &b);
 
HDSI_API
bool operator!=(
    const HdsiLegacyDisplayStyleOverrideSceneIndex::OptionalInt &a,
    const HdsiLegacyDisplayStyleOverrideSceneIndex::OptionalInt &b);
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif //PXR_IMAGING_HDSI_LEGACY_DISPLAY_STYLE_OVERRIDE_SCENE_INDEX_H