gfx/vr/service/OculusSession.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef GFX_VR_SERVICE_OCULUSSESSION_H
   8 #define GFX_VR_SERVICE_OCULUSSESSION_H
   9
  10 #include "VRSession.h"
  11
  12 #include "mozilla/gfx/2D.h"
  13 #include "moz_external_vr.h"
  14 #include "nsTArray.h"
  15 #include "oculus/ovr_capi_dynamic.h"
  16 #include "prlink.h"
  17 #include "ShaderDefinitionsD3D11.h"  // for VertexShaderConstants and PixelShaderConstants
  18
  19 struct ID3D11Device;
  20
  21 namespace mozilla {
  22 namespace layers {
  23 struct VertexShaderConstants;
  24 struct PixelShaderConstants;
  25 }  // namespace layers
  26 namespace gfx {
  27
  28 class OculusSession : public VRSession {
  29  public:
  30   OculusSession();
  31   virtual ~OculusSession();
  32
  33   bool Initialize(mozilla::gfx::VRSystemState& aSystemState) override;
  34   void Shutdown() override;
  35   void ProcessEvents(mozilla::gfx::VRSystemState& aSystemState) override;
  36   void StartFrame(mozilla::gfx::VRSystemState& aSystemState) override;
  37   bool StartPresentation() override;
  38   void StopPresentation() override;
  39   bool SubmitFrame(const mozilla::gfx::VRLayer_Stereo_Immersive& aLayer,
  40                    ID3D11Texture2D* aTexture) override;
  41   void VibrateHaptic(uint32_t aControllerIdx, uint32_t aHapticIndex,
  42                      float aIntensity, float aDuration) override;
  43   void StopVibrateHaptic(uint32_t aControllerIdx) override;
  44   void StopAllHaptics() override;
  45
  46  private:
  47   bool LoadOvrLib();
  48   void UnloadOvrLib();
  49   bool StartLib(ovrInitFlags aFlags);
  50   void StopLib();
  51   bool StartSession();
  52   void StopSession();
  53   bool StartRendering();
  54   void StopRendering();
  55   bool CreateD3DObjects();
  56   bool CreateShaders();
  57   void DestroyShaders();
  58   void CoverTransitions();
  59   void UpdateVisibility();
  60   bool ChangeVisibility(bool bVisible);
  61   bool InitState(mozilla::gfx::VRSystemState& aSystemState);
  62   void UpdateStageParameters(mozilla::gfx::VRDisplayState& aState);
  63   void UpdateEyeParameters(mozilla::gfx::VRSystemState& aState);
  64   void UpdateHeadsetPose(mozilla::gfx::VRSystemState& aState);
  65   void UpdateControllers(VRSystemState& aState);
  66   void UpdateControllerInputs(VRSystemState& aState,
  67                               const ovrInputState& aInputState);
  68   void UpdateHaptics();
  69   void EnumerateControllers(VRSystemState& aState,
  70                             const ovrInputState& aInputState);
  71   void UpdateControllerPose(VRSystemState& aState,
  72                             const ovrInputState& aInputState);
  73   void UpdateTelemetry(VRSystemState& aSystemState);
  74   bool IsPresentationReady() const;
  75   bool UpdateConstantBuffers();
  76
  77   PRLibrary* mOvrLib;
  78   ovrSession mSession;
  79   ovrInitFlags mInitFlags;
  80   ovrTextureSwapChain mTextureSet;
  81   nsTArray<RefPtr<ID3D11RenderTargetView>> mRTView;
  82   nsTArray<RefPtr<ID3D11Texture2D>> mTexture;
  83   nsTArray<RefPtr<ID3D11ShaderResourceView>> mSRV;
  84
  85   ID3D11VertexShader* mQuadVS;
  86   ID3D11PixelShader* mQuadPS;
  87   RefPtr<ID3D11SamplerState> mLinearSamplerState;
  88   layers::VertexShaderConstants mVSConstants;
  89   layers::PixelShaderConstants mPSConstants;
  90   RefPtr<ID3D11Buffer> mVSConstantBuffer;
  91   RefPtr<ID3D11Buffer> mPSConstantBuffer;
  92   RefPtr<ID3D11Buffer> mVertexBuffer;
  93   RefPtr<ID3D11InputLayout> mInputLayout;
  94
  95   IntSize mPresentationSize;
  96   ovrFovPort mFOVPort[2];
  97
  98   // Most recent HMD eye poses, from start of frame
  99   ovrPosef mFrameStartPose[2];
 100
 101   float mRemainingVibrateTime[2];
 102   float mHapticPulseIntensity[2];
 103   TimeStamp mLastHapticUpdate;
 104
 105   // The timestamp of the last ending presentation
 106   TimeStamp mLastPresentationEnd;
 107   bool mIsPresenting;
 108 };
 109
 110 }  // namespace gfx
 111 }  // namespace mozilla
 112
 113 #endif  // GFX_VR_SERVICE_OCULUSSESSION_H