////  Created by Bradley Austin Davis on 2015/05/29//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html//#pragma once #include <display-plugins/hmd/HmdDisplayPlugin.h> #include <QTimer> #include <OVR_CAPI.h> const float TARGET_RATE_OculusLegacy = 75.0f;class GLWindow; class OculusLegacyDisplayPlugin : public HmdDisplayPlugin {    using Parent = HmdDisplayPlugin;public:    OculusLegacyDisplayPlugin();    bool isSupported() const override;    const QString getName() const override { return NAME; }     void init() override;     int getHmdScreen() const override;     // Stereo specific methods    void resetSensors() override;    bool beginFrameRender(uint32_t frameIndex) override;     float getTargetFrameRate() const override; protected:    bool internalActivate() override;    void internalDeactivate() override;     void customizeContext() override;    void uncustomizeContext() override;    void hmdPresent() override;    bool isHmdMounted() const override { return true; } private:    static const char* NAME;     GLWindow* _hmdWindow{ nullptr };    ovrHmd _hmd;    mutable ovrTrackingState _trackingState;    ovrEyeRenderDesc _eyeRenderDescs[2];    ovrVector3f _ovrEyeOffsets[2];     ovrFovPort _eyeFovs[2];    ovrTexture _eyeTextures[2]; // FIXME - not currently in use    mutable int _hmdScreen { -1 };    bool _hswDismissed { false };};