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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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 "mozilla/RefPtr.h"
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/EnumeratedArray.h"
+
+#include "gfxVR.h"
+#include "VRDisplayHost.h"
+#include "ovr_capi_dynamic.h"
+
+struct ID3D11Device;
+
+namespace mozilla {
+namespace layers {
+class CompositingRenderTargetD3D11;
+struct VertexShaderConstants;
+struct PixelShaderConstants;
+}
+namespace gfx {
+namespace impl {
+
+class VRDisplayOculus : public VRDisplayHost
+{
+public:
+ virtual void NotifyVSync() override;
+ virtual VRHMDSensorState GetSensorState() override;
+ virtual VRHMDSensorState GetImmediateSensorState() override;
+ void ZeroSensor() override;
+
+protected:
+ virtual void StartPresentation() override;
+ virtual void StopPresentation() override;
+ virtual void SubmitFrame(mozilla::layers::TextureSourceD3D11* aSource,
+ const IntSize& aSize,
+ const VRHMDSensorState& aSensorState,
+ const gfx::Rect& aLeftEyeRect,
+ const gfx::Rect& aRightEyeRect) override;
+
+public:
+ explicit VRDisplayOculus(ovrSession aSession);
+
+protected:
+ virtual ~VRDisplayOculus();
+ void Destroy();
+
+ bool RequireSession();
+ const ovrHmdDesc& GetHmdDesc();
+
+ already_AddRefed<layers::CompositingRenderTargetD3D11> GetNextRenderTarget();
+
+ VRHMDSensorState GetSensorState(double timeOffset);
+
+ ovrHmdDesc mDesc;
+ ovrSession mSession;
+ ovrFovPort mFOVPort[2];
+ ovrTextureSwapChain mTextureSet;
+ nsTArray<RefPtr<layers::CompositingRenderTargetD3D11>> mRenderTargets;
+
+ RefPtr<ID3D11Device> mDevice;
+ RefPtr<ID3D11DeviceContext> mContext;
+ 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;
+
+ bool mIsPresenting;
+
+ bool UpdateConstantBuffers();
+
+ struct Vertex
+ {
+ float position[2];
+ };
+};
+
+} // namespace impl
+
+class VRDisplayManagerOculus : public VRDisplayManager
+{
+public:
+ static already_AddRefed<VRDisplayManagerOculus> Create();
+ virtual bool Init() override;
+ virtual void Destroy() override;
+ virtual void GetHMDs(nsTArray<RefPtr<VRDisplayHost> >& aHMDResult) override;
+protected:
+ VRDisplayManagerOculus()
+ : mOculusInitialized(false)
+ { }
+
+ RefPtr<impl::VRDisplayOculus> mHMDInfo;
+ bool mOculusInitialized;
+ RefPtr<nsIThread> mOculusThread;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif /* GFX_VR_OCULUS_H */