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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 MOZILLA_GFX_COMPOSITORD3D11_H

 #define MOZILLA_GFX_COMPOSITORD3D11_H

 #include "mozilla/gfx/2D.h"

 #include "gfx2DGlue.h"

 #include "mozilla/layers/Compositor.h"

 #include "TextureD3D11.h"

 #include <d3d11.h>

 class nsWidget;

 namespace mozilla {

 namespace layers {

 #define LOGD3D11(param)

 struct VertexShaderConstants

 {

   float layerTransform[4][4];

   float projection[4][4];

   float renderTargetOffset[4];

   gfx::Rect textureCoords;

   gfx::Rect layerQuad;

   gfx::Rect maskQuad;

 };

 struct PixelShaderConstants

 {

   float layerColor[4];

   float layerOpacity[4];

 };

 struct DeviceAttachmentsD3D11;

 class CompositorD3D11 : public Compositor

 {

 public:

   CompositorD3D11(nsIWidget* aWidget);

   ~CompositorD3D11();

   virtual bool Initialize() MOZ_OVERRIDE;

   virtual void Destroy() MOZ_OVERRIDE {}

   virtual TextureFactoryIdentifier

     GetTextureFactoryIdentifier() MOZ_OVERRIDE;

   virtual TemporaryRef<DataTextureSource>

     CreateDataTextureSource(TextureFlags aFlags = 0) MOZ_OVERRIDE;

   virtual bool CanUseCanvasLayerForSize(const gfx::IntSize& aSize) MOZ_OVERRIDE;

   virtual int32_t GetMaxTextureSize() const MOZ_FINAL;

   virtual void SetTargetContext(gfx::DrawTarget* aTarget)  MOZ_OVERRIDE

   {

     mTarget = aTarget;

   }

   virtual void MakeCurrent(MakeCurrentFlags aFlags = 0)  MOZ_OVERRIDE {}

   virtual TemporaryRef<CompositingRenderTarget>

     CreateRenderTarget(const gfx::IntRect &aRect,

                        SurfaceInitMode aInit) MOZ_OVERRIDE;

   virtual TemporaryRef<CompositingRenderTarget>

     CreateRenderTargetFromSource(const gfx::IntRect& aRect,

                                  const CompositingRenderTarget* aSource,

                                  const gfx::IntPoint& aSourcePoint) MOZ_OVERRIDE;

   virtual void SetRenderTarget(CompositingRenderTarget* aSurface) MOZ_OVERRIDE;

   virtual CompositingRenderTarget* GetCurrentRenderTarget() const MOZ_OVERRIDE

   {

     return mCurrentRT;

   }

   virtual void SetDestinationSurfaceSize(const gfx::IntSize& aSize) MOZ_OVERRIDE {}

   /**

    * Declare an offset to use when rendering layers. This will be ignored when

    * rendering to a target instead of the screen.

    */

   virtual void SetScreenRenderOffset(const ScreenPoint& aOffset) MOZ_OVERRIDE

   {

     if (aOffset.x || aOffset.y) {

       NS_RUNTIMEABORT("SetScreenRenderOffset not supported by CompositorD3D11.");

     }

     // If the offset is 0, 0 that's okay.

   }

   virtual void ClearRect(const gfx::Rect& aRect) MOZ_OVERRIDE;

   virtual void DrawQuad(const gfx::Rect &aRect,

                         const gfx::Rect &aClipRect,

                         const EffectChain &aEffectChain,

                         gfx::Float aOpacity,

                         const gfx::Matrix4x4 &aTransform) MOZ_OVERRIDE;

   /**

    * Start a new frame. If aClipRectIn is null, sets *aClipRectOut to the

    * screen dimensions. 

    */

   virtual void BeginFrame(const nsIntRegion& aInvalidRegion,

                           const gfx::Rect *aClipRectIn,

                           const gfx::Matrix& aTransform,

                           const gfx::Rect& aRenderBounds,

                           gfx::Rect *aClipRectOut = nullptr,

                           gfx::Rect *aRenderBoundsOut = nullptr) MOZ_OVERRIDE;

   /**

    * Flush the current frame to the screen.

    */

   virtual void EndFrame() MOZ_OVERRIDE;

   /**

    * Post rendering stuff if the rendering is outside of this Compositor

    * e.g., by Composer2D

    */

   virtual void EndFrameForExternalComposition(const gfx::Matrix& aTransform) MOZ_OVERRIDE {}

   /**

    * Tidy up if BeginFrame has been called, but EndFrame won't be

    */

   virtual void AbortFrame() MOZ_OVERRIDE {}

   /**

    * Setup the viewport and projection matrix for rendering

    * to a window of the given dimensions.

    */

   virtual void PrepareViewport(const gfx::IntSize& aSize,

                                const gfx::Matrix& aWorldTransform) MOZ_OVERRIDE;

   virtual bool SupportsPartialTextureUpdate() MOZ_OVERRIDE { return true; }

 #ifdef MOZ_DUMP_PAINTING

   virtual const char* Name() const MOZ_OVERRIDE { return "Direct3D 11"; }

 #endif

   virtual LayersBackend GetBackendType() const MOZ_OVERRIDE {

     return LayersBackend::LAYERS_D3D11;

   }

   virtual nsIWidget* GetWidget() const MOZ_OVERRIDE { return mWidget; }

   ID3D11Device* GetDevice() { return mDevice; }

 private:

   // ensure mSize is up to date with respect to mWidget

   void EnsureSize();

   void VerifyBufferSize();

   void UpdateRenderTarget();

   bool CreateShaders();

   void UpdateConstantBuffers();

   void SetSamplerForFilter(gfx::Filter aFilter);

   void SetPSForEffect(Effect *aEffect, MaskType aMaskType, gfx::SurfaceFormat aFormat);

   void PaintToTarget();

   virtual gfx::IntSize GetWidgetSize() const MOZ_OVERRIDE { return gfx::ToIntSize(mSize); }

   RefPtr<ID3D11DeviceContext> mContext;

   RefPtr<ID3D11Device> mDevice;

   RefPtr<IDXGISwapChain> mSwapChain;

   RefPtr<CompositingRenderTargetD3D11> mDefaultRT;

   RefPtr<CompositingRenderTargetD3D11> mCurrentRT;

   DeviceAttachmentsD3D11* mAttachments;

   RefPtr<gfx::DrawTarget> mTarget;

   nsIWidget* mWidget;

   nsIntSize mSize;

   HWND mHwnd;

   D3D_FEATURE_LEVEL mFeatureLevel;

   VertexShaderConstants mVSConstants;

   PixelShaderConstants mPSConstants;

   bool mDisableSequenceForNextFrame;

 };

 }

 }

 #endif