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 "moz_external_vr.h"
  13 #include "mozilla/TimeStamp.h"
  14 #include "mozilla/gfx/2D.h"
  15 #include "nsTArray.h"
  16 #include "oculus/ovr_capi_dynamic.h"
  17 #include "prlink.h"
  18 #include "ShaderDefinitionsD3D11.h"  // for VertexShaderConstants and PixelShaderConstants
  19
  20 struct ID3D11Device;
  21
  22 namespace mozilla {
  23 namespace layers {
  24 struct VertexShaderConstants;
  25 struct PixelShaderConstants;
  26 }  // namespace layers
  27 namespace gfx {
  28
  29 class OculusSession : public VRSession {
  30  public:
  31   OculusSession();
  32   virtual ~OculusSession();
  33
  34   bool Initialize(mozilla::gfx::VRSystemState& aSystemState,
  35                   bool aDetectRuntimesOnly) override;
  36   void Shutdown() override;
  37   void ProcessEvents(mozilla::gfx::VRSystemState& aSystemState) override;
  38   void StartFrame(mozilla::gfx::VRSystemState& aSystemState) override;
  39   bool StartPresentation() override;
  40   void StopPresentation() override;
  41   bool SubmitFrame(const mozilla::gfx::VRLayer_Stereo_Immersive& aLayer,
  42                    ID3D11Texture2D* aTexture) override;
  43   void VibrateHaptic(uint32_t aControllerIdx, uint32_t aHapticIndex,
  44                      float aIntensity, float aDuration) override;
  45   void StopVibrateHaptic(uint32_t aControllerIdx) override;
  46   void StopAllHaptics() override;
  47
  48  private:
  49   bool LoadOvrLib();
  50   void UnloadOvrLib();
  51   bool StartLib(ovrInitFlags aFlags);
  52   void StopLib();
  53   bool StartSession();
  54   void StopSession();
  55   bool StartRendering();
  56   void StopRendering();
  57   bool CreateD3DObjects();
  58   bool CreateShaders();
  59   void DestroyShaders();
  60   void CoverTransitions();
  61   void UpdateVisibility();
  62   bool ChangeVisibility(bool bVisible);
  63   bool InitState(mozilla::gfx::VRSystemState& aSystemState);
  64   void UpdateStageParameters(mozilla::gfx::VRDisplayState& aState);
  65   void UpdateEyeParameters(mozilla::gfx::VRSystemState& aState);
  66   void UpdateHeadsetPose(mozilla::gfx::VRSystemState& aState);
  67   void UpdateControllers(VRSystemState& aState);
  68   void UpdateControllerInputs(VRSystemState& aState,
  69                               const ovrInputState& aInputState);
  70   void UpdateHaptics();
  71   void EnumerateControllers(VRSystemState& aState,
  72                             const ovrInputState& aInputState);
  73   void UpdateControllerPose(VRSystemState& aState,
  74                             const ovrInputState& aInputState);
  75   void UpdateTelemetry(VRSystemState& aSystemState);
  76   bool IsPresentationReady() const;
  77   bool UpdateConstantBuffers();
  78
  79   PRLibrary* mOvrLib;
  80   ovrSession mSession;
  81   ovrInitFlags mInitFlags;
  82   ovrTextureSwapChain mTextureSet;
  83   nsTArray<RefPtr<ID3D11RenderTargetView>> mRTView;
  84   nsTArray<RefPtr<ID3D11Texture2D>> mTexture;
  85   nsTArray<RefPtr<ID3D11ShaderResourceView>> mSRV;
  86
  87   ID3D11VertexShader* mQuadVS;
  88   ID3D11PixelShader* mQuadPS;
  89   RefPtr<ID3D11SamplerState> mLinearSamplerState;
  90   layers::VertexShaderConstants mVSConstants;
  91   layers::PixelShaderConstants mPSConstants;
  92   RefPtr<ID3D11Buffer> mVSConstantBuffer;
  93   RefPtr<ID3D11Buffer> mPSConstantBuffer;
  94   RefPtr<ID3D11Buffer> mVertexBuffer;
  95   RefPtr<ID3D11InputLayout> mInputLayout;
  96
  97   IntSize mPresentationSize;
  98   ovrFovPort mFOVPort[2];
  99
 100   // Most recent HMD eye poses, from start of frame
 101   ovrPosef mFrameStartPose[2];
 102
 103   float mRemainingVibrateTime[2];
 104   float mHapticPulseIntensity[2];
 105   TimeStamp mLastHapticUpdate;
 106
 107   // The timestamp of the last ending presentation
 108   TimeStamp mLastPresentationEnd;
 109   bool mIsPresenting;
 110 };
 111
 112 }  // namespace gfx
 113 }  // namespace mozilla
 114
 115 #endif  // GFX_VR_SERVICE_OCULUSSESSION_H