gecko-dev/gfx/vr/gfxVROculus.h
Kearwood "Kip" Gilbert 89b524f028 Bug 1469967 - Implement immersive mode for gfxVRExternal r=rbarker
- The VR External interface/shmem and gfxVRExternal are
  updated to enable entering VR, exiting VR, and submitting
  frames.
- You can now construct gfxVRExternal using a pointer to
  the VR External API shmem, if it is created elsewhere.

MozReview-Commit-ID: LZuoLvoEmKO

--HG--
extra : rebase_source : ab38ae4c34f9ac5cdd69e7222f12b1c758307057
2018-05-08 11:31:28 -07:00

234 lines
7.2 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_VR_OCULUS_H
#define GFX_VR_OCULUS_H
#include "nsTArray.h"
#include "nsISupportsImpl.h" // For NS_INLINE_DECL_REFCOUNTING
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/EnumeratedArray.h"
#include "gfxVR.h"
#include "VRDisplayLocal.h"
#include "ovr_capi_dynamic.h"
struct ID3D11Device;
namespace mozilla {
namespace layers {
class CompositingRenderTargetD3D11;
struct VertexShaderConstants;
struct PixelShaderConstants;
}
namespace gfx {
class VRThread;
namespace impl {
enum class OculusControllerAxisType : uint16_t {
ThumbstickXAxis,
ThumbstickYAxis,
NumVRControllerAxisType
};
class VROculusSession
{
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VROculusSession);
friend class VRDisplayOculus;
public:
VROculusSession();
void Refresh(bool aForceRefresh = false);
void StartTracking();
void StopTracking();
bool IsTrackingReady() const;
void StartPresentation(const IntSize& aSize);
void StopPresentation();
bool IsPresentationReady() const;
bool IsMounted() const;
ovrSession Get();
bool IsQuitTimeoutActive();
already_AddRefed<layers::CompositingRenderTargetD3D11> GetNextRenderTarget();
ovrTextureSwapChain GetSwapChain();
private:
PRLibrary* mOvrLib;
ovrSession mSession;
ovrInitFlags mInitFlags;
ovrTextureSwapChain mTextureSet;
nsTArray<RefPtr<layers::CompositingRenderTargetD3D11>> mRenderTargets;
IntSize mPresentationSize;
RefPtr<ID3D11Device> mDevice;
RefPtr<VRThread> mSubmitThread;
// The timestamp of the last time Oculus set ShouldQuit to true.
TimeStamp mLastShouldQuit;
// The timestamp of the last ending presentation
TimeStamp mLastPresentationEnd;
VRTelemetry mTelemetry;
bool mRequestPresentation;
bool mRequestTracking;
bool mTracking;
bool mDrawBlack;
bool mIsConnected;
bool mIsMounted;
~VROculusSession();
void Uninitialize();
bool Initialize(ovrInitFlags aFlags);
bool LoadOvrLib();
void UnloadOvrLib();
bool StartSession();
void StopSession();
bool StartLib(ovrInitFlags aFlags);
void StopLib();
bool StartRendering();
void StopRendering();
};
class VRDisplayOculus : public VRDisplayLocal
{
public:
void ZeroSensor() override;
protected:
virtual VRHMDSensorState GetSensorState() override;
virtual void StartPresentation() override;
virtual void StopPresentation() override;
virtual bool SubmitFrame(ID3D11Texture2D* aSource,
const IntSize& aSize,
const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect) override;
void UpdateStageParameters();
public:
explicit VRDisplayOculus(VROculusSession* aSession);
void Destroy();
void Refresh();
protected:
virtual ~VRDisplayOculus();
VRHMDSensorState GetSensorState(double absTime);
ovrHmdDesc mDesc;
RefPtr<VROculusSession> mSession;
ovrFovPort mFOVPort[2];
ID3D11VertexShader* mQuadVS;
ID3D11PixelShader* mQuadPS;
RefPtr<ID3D11SamplerState> mLinearSamplerState;
layers::VertexShaderConstants mVSConstants;
layers::PixelShaderConstants mPSConstants;
RefPtr<ID3D11Buffer> mVSConstantBuffer;
RefPtr<ID3D11Buffer> mPSConstantBuffer;
RefPtr<ID3D11Buffer> mVertexBuffer;
RefPtr<ID3D11InputLayout> mInputLayout;
float mEyeHeight;
bool UpdateConstantBuffers();
void UpdateEyeParameters(gfx::Matrix4x4* aHeadToEyeTransforms = nullptr);
struct Vertex
{
float position[2];
};
};
class VRControllerOculus : public VRControllerHost
{
public:
explicit VRControllerOculus(dom::GamepadHand aHand, uint32_t aDisplayID);
float GetAxisMove(uint32_t aAxis);
void SetAxisMove(uint32_t aAxis, float aValue);
float GetIndexTrigger();
void SetIndexTrigger(float aValue);
float GetHandTrigger();
void SetHandTrigger(float aValue);
void VibrateHaptic(ovrSession aSession,
uint32_t aHapticIndex,
double aIntensity,
double aDuration,
const VRManagerPromise& aPromise);
void StopVibrateHaptic();
void ShutdownVibrateHapticThread();
protected:
virtual ~VRControllerOculus();
private:
void UpdateVibrateHaptic(ovrSession aSession,
uint32_t aHapticIndex,
double aIntensity,
double aDuration,
uint64_t aVibrateIndex,
const VRManagerPromise& aPromise);
void VibrateHapticComplete(ovrSession aSession, const VRManagerPromise& aPromise, bool aStop);
float mAxisMove[static_cast<uint32_t>(
OculusControllerAxisType::NumVRControllerAxisType)];
float mIndexTrigger;
float mHandTrigger;
RefPtr<VRThread> mVibrateThread;
Atomic<bool> mIsVibrateStopped;
};
} // namespace impl
class VRSystemManagerOculus : public VRSystemManager
{
public:
static already_AddRefed<VRSystemManagerOculus> Create();
virtual void Destroy() override;
virtual void Shutdown() override;
virtual void Enumerate() override;
virtual void NotifyVSync() override;
virtual bool ShouldInhibitEnumeration() override;
virtual void GetHMDs(nsTArray<RefPtr<VRDisplayHost> >& aHMDResult) override;
virtual bool GetIsPresenting() override;
virtual void HandleInput() override;
virtual void GetControllers(nsTArray<RefPtr<VRControllerHost>>&
aControllerResult) override;
virtual void ScanForControllers() override;
virtual void RemoveControllers() override;
virtual void VibrateHaptic(uint32_t aControllerIdx, uint32_t aHapticIndex,
double aIntensity, double aDuration, const VRManagerPromise& aPromise) override;
virtual void StopVibrateHaptic(uint32_t aControllerIdx) override;
protected:
VRSystemManagerOculus();
private:
void HandleButtonPress(uint32_t aControllerIdx,
uint32_t aButton,
uint64_t aButtonMask,
uint64_t aButtonPressed,
uint64_t aButtonTouched);
void HandleAxisMove(uint32_t aControllerIdx, uint32_t aAxis,
float aValue);
void HandlePoseTracking(uint32_t aControllerIdx,
const dom::GamepadPoseState& aPose,
VRControllerHost* aController);
void HandleIndexTriggerPress(uint32_t aControllerIdx, uint32_t aButton, float aValue,
uint64_t aTouchMask, uint64_t aButtonTouched);
void HandleHandTriggerPress(uint32_t aControllerIdx, uint32_t aButton, float aValue);
void HandleTouchEvent(uint32_t aControllerIdx, uint32_t aButton,
uint64_t aTouchMask, uint64_t aTouched);
void GetControllerPoseState(uint32_t aHandIdx, dom::GamepadPoseState& aPoseState,
bool aForceUpdate = false);
RefPtr<impl::VRDisplayOculus> mDisplay;
nsTArray<RefPtr<impl::VRControllerOculus>> mOculusController;
RefPtr<impl::VROculusSession> mSession;
};
} // namespace gfx
} // namespace mozilla
#endif /* GFX_VR_OCULUS_H */