1 files changed, 115 insertions, 0 deletions
diff --git a/gfx/vr/service/OculusSession.h b/gfx/vr/service/OculusSession.h
new file mode 100644
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+++ b/gfx/vr/service/OculusSession.h
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+/* -*- 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_SERVICE_OCULUSSESSION_H
+#define GFX_VR_SERVICE_OCULUSSESSION_H
+
+#include "VRSession.h"
+
+#include "moz_external_vr.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/gfx/2D.h"
+#include "nsTArray.h"
+#include "oculus/ovr_capi_dynamic.h"
+#include "prlink.h"
+#include "ShaderDefinitionsD3D11.h"  // for VertexShaderConstants and PixelShaderConstants
+
+struct ID3D11Device;
+
+namespace mozilla {
+namespace layers {
+struct VertexShaderConstants;
+struct PixelShaderConstants;
+}  // namespace layers
+namespace gfx {
+
+class OculusSession : public VRSession {
+ public:
+  OculusSession();
+  virtual ~OculusSession();
+
+  bool Initialize(mozilla::gfx::VRSystemState& aSystemState,
+                  bool aDetectRuntimesOnly) override;
+  void Shutdown() override;
+  void ProcessEvents(mozilla::gfx::VRSystemState& aSystemState) override;
+  void StartFrame(mozilla::gfx::VRSystemState& aSystemState) override;
+  bool StartPresentation() override;
+  void StopPresentation() override;
+  bool SubmitFrame(const mozilla::gfx::VRLayer_Stereo_Immersive& aLayer,
+                   ID3D11Texture2D* aTexture) override;
+  void VibrateHaptic(uint32_t aControllerIdx, uint32_t aHapticIndex,
+                     float aIntensity, float aDuration) override;
+  void StopVibrateHaptic(uint32_t aControllerIdx) override;
+  void StopAllHaptics() override;
+
+ private:
+  bool LoadOvrLib();
+  void UnloadOvrLib();
+  bool StartLib(ovrInitFlags aFlags);
+  void StopLib();
+  bool StartSession();
+  void StopSession();
+  bool StartRendering();
+  void StopRendering();
+  bool CreateD3DObjects();
+  bool CreateShaders();
+  void DestroyShaders();
+  void CoverTransitions();
+  void UpdateVisibility();
+  bool ChangeVisibility(bool bVisible);
+  bool InitState(mozilla::gfx::VRSystemState& aSystemState);
+  void UpdateStageParameters(mozilla::gfx::VRDisplayState& aState);
+  void UpdateEyeParameters(mozilla::gfx::VRSystemState& aState);
+  void UpdateHeadsetPose(mozilla::gfx::VRSystemState& aState);
+  void UpdateControllers(VRSystemState& aState);
+  void UpdateControllerInputs(VRSystemState& aState,
+                              const ovrInputState& aInputState);
+  void UpdateHaptics();
+  void EnumerateControllers(VRSystemState& aState,
+                            const ovrInputState& aInputState);
+  void UpdateControllerPose(VRSystemState& aState,
+                            const ovrInputState& aInputState);
+  void UpdateTelemetry(VRSystemState& aSystemState);
+  bool IsPresentationReady() const;
+  bool UpdateConstantBuffers();
+
+  PRLibrary* mOvrLib;
+  ovrSession mSession;
+  ovrInitFlags mInitFlags;
+  ovrTextureSwapChain mTextureSet;
+  nsTArray<RefPtr<ID3D11RenderTargetView>> mRTView;
+  nsTArray<RefPtr<ID3D11Texture2D>> mTexture;
+  nsTArray<RefPtr<ID3D11ShaderResourceView>> mSRV;
+
+  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;
+
+  IntSize mPresentationSize;
+  ovrFovPort mFOVPort[2];
+
+  // Most recent HMD eye poses, from start of frame
+  ovrPosef mFrameStartPose[2];
+
+  float mRemainingVibrateTime[2];
+  float mHapticPulseIntensity[2];
+  TimeStamp mLastHapticUpdate;
+
+  // The timestamp of the last ending presentation
+  TimeStamp mLastPresentationEnd;
+  bool mIsPresenting;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif  // GFX_VR_SERVICE_OCULUSSESSION_H