The Tor Browser: gfx/layers/d3d9/LayerManagerD3D9.h@6474c204b198 (annotated)

gfx/layers/d3d9/LayerManagerD3D9.h@6474c204b198 (annotated)

gfx/layers/d3d9/LayerManagerD3D9.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * 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_LAYERMANAGERD3D9_H
 #define GFX_LAYERMANAGERD3D9_H
 #include "Layers.h"
 #include <windows.h>
 #include <d3d9.h>
 #include "gfxContext.h"
 #include "nsIWidget.h"
 #include "DeviceManagerD3D9.h"
 namespace mozilla {
 namespace layers {
 class LayerD3D9;
 class ThebesLayerD3D9;
 /*
  * This is the LayerManager used for Direct3D 9. For now this will render on
  * the main thread.
  */
 class LayerManagerD3D9 : public LayerManager {
 public:
   LayerManagerD3D9(nsIWidget *aWidget);
   virtual ~LayerManagerD3D9();
   /*
    * Initializes the layer manager, this is when the layer manager will
    * actually access the device and attempt to create the swap chain used
    * to draw to the window. If this method fails the device cannot be used.
    * This function is not threadsafe.
    *
    * \return True is initialization was succesful, false when it was not.
    */
   bool Initialize(bool force = false);
   /*
    * Sets the clipping region for this layer manager. This is important on
    * windows because using OGL we no longer have GDI's native clipping. Therefor
    * widget must tell us what part of the screen is being invalidated,
    * and we should clip to this.
    *
    * \param aClippingRegion Region to clip to. Setting an empty region
    * will disable clipping.
    */
   void SetClippingRegion(const nsIntRegion& aClippingRegion);
   /*
    * LayerManager implementation.
    */
   virtual void Destroy();
   virtual void BeginTransaction();
   virtual void BeginTransactionWithTarget(gfxContext* aTarget);
   void EndConstruction();
   virtual bool EndEmptyTransaction(EndTransactionFlags aFlags = END_DEFAULT);
   struct CallbackInfo {
     DrawThebesLayerCallback Callback;
     void *CallbackData;
   };
   virtual void EndTransaction(DrawThebesLayerCallback aCallback,
                               void* aCallbackData,
                               EndTransactionFlags aFlags = END_DEFAULT);
   const CallbackInfo &GetCallbackInfo() { return mCurrentCallbackInfo; }
   void SetRoot(Layer* aLayer);
   virtual bool CanUseCanvasLayerForSize(const gfx::IntSize &aSize)
   {
     if (!mDeviceManager)
       return false;
     int32_t maxSize = mDeviceManager->GetMaxTextureSize();
     return aSize <= gfx::IntSize(maxSize, maxSize);
   }
   virtual int32_t GetMaxTextureSize() const
   {
     return mDeviceManager->GetMaxTextureSize();
   }
   virtual already_AddRefed<ThebesLayer> CreateThebesLayer();
   virtual already_AddRefed<ContainerLayer> CreateContainerLayer();
   virtual already_AddRefed<ImageLayer> CreateImageLayer();
   virtual already_AddRefed<ColorLayer> CreateColorLayer();
   virtual already_AddRefed<CanvasLayer> CreateCanvasLayer();
   virtual already_AddRefed<ReadbackLayer> CreateReadbackLayer();
   virtual LayersBackend GetBackendType() { return LayersBackend::LAYERS_D3D9; }
   virtual void GetBackendName(nsAString& name) { name.AssignLiteral("Direct3D 9"); }
   bool DeviceWasRemoved() { return deviceManager()->DeviceWasRemoved(); }
   /*
    * Helper methods.
    */
   void SetClippingEnabled(bool aEnabled);
   void SetShaderMode(DeviceManagerD3D9::ShaderMode aMode,
                      Layer* aMask, bool aIs2D = true)
     { mDeviceManager->SetShaderMode(aMode, aMask, aIs2D); }
   IDirect3DDevice9 *device() const { return mDeviceManager->device(); }
   DeviceManagerD3D9 *deviceManager() const { return mDeviceManager; }
   /**
    * Return pointer to the Nv3DVUtils instance. Re-direct to mDeviceManager.
    */
   Nv3DVUtils *GetNv3DVUtils() { return mDeviceManager ? mDeviceManager->GetNv3DVUtils() : nullptr; }
   virtual const char* Name() const { return "D3D9"; }
   void ReportFailure(const nsACString &aMsg, HRESULT aCode);
   bool CompositingDisabled() { return mCompositingDisabled; }
   void SetCompositingDisabled(bool aCompositingDisabled) { mCompositingDisabled = aCompositingDisabled; }
 private:
   /* Device manager instance for this layer manager */
   nsRefPtr<DeviceManagerD3D9> mDeviceManager;
   /* Swap chain associated with this layer manager */
   nsRefPtr<SwapChainD3D9> mSwapChain;
   /* Widget associated with this layer manager */
   nsIWidget *mWidget;
   /*
    * Context target, nullptr when drawing directly to our swap chain.
    */
   nsRefPtr<gfxContext> mTarget;
   /* Callback info for current transaction */
   CallbackInfo mCurrentCallbackInfo;
   /*
    * Region we're clipping our current drawing to.
    */
   nsIntRegion mClippingRegion;
   /*
    * Device reset count at last paint. Whenever this changes, we need to
    * do a full layer tree update.
    */
   uint32_t mDeviceResetCount;
   /*
    * True if we should only be drawing layer contents, not
    * compositing them to the target.
    */
   bool mCompositingDisabled;
   /*
    * Render the current layer tree to the active target.
    */
   void Render();
   /*
    * Setup the pipeline.
    */
   void SetupPipeline();
   /*
    * Copies the content of our backbuffer to the set transaction target.
    */
   void PaintToTarget();
 };
 /*
  * General information and tree management for OGL layers.
  */
 class LayerD3D9
 {
 public:
   LayerD3D9(LayerManagerD3D9 *aManager);
   virtual LayerD3D9 *GetFirstChildD3D9() { return nullptr; }
   void SetFirstChild(LayerD3D9 *aParent);
   virtual Layer* GetLayer() = 0;
   virtual void RenderLayer() = 0;
   /**
   /* This function may be used on device resets to clear all VRAM resources
    * that a layer might be using.
    */
   virtual void CleanResources() {}
   IDirect3DDevice9 *device() const { return mD3DManager->device(); }
   /* Called by the layer manager when it's destroyed */
   virtual void LayerManagerDestroyed() {}
   void ReportFailure(const nsACString &aMsg, HRESULT aCode) {
     return mD3DManager->ReportFailure(aMsg, aCode);
   }
   void SetShaderTransformAndOpacity()
   {
     Layer* layer = GetLayer();
     const gfx::Matrix4x4& transform = layer->GetEffectiveTransform();
     device()->SetVertexShaderConstantF(CBmLayerTransform, &transform._11, 4);
     float opacity[4];
     /*
      * We always upload a 4 component float, but the shader will use only the
      * first component since it's declared as a 'float'.
      */
     opacity[0] = layer->GetEffectiveOpacity();
     device()->SetPixelShaderConstantF(CBfLayerOpacity, opacity, 1);
   }
   /*
    * Returns a texture containing the contents of this
    * layer. Will try to return an existing texture if possible, or a temporary
    * one if not. It is the callee's responsibility to release the shader
    * resource view. Will return null if a texture could not be constructed.
    * The texture will not be transformed, i.e., it will be in the same coord
    * space as this.
    * Any layer that can be used as a mask layer should override this method.
    * If aSize is non-null and a texture is successfully returned, aSize will
    * contain the size of the texture.
    */
   virtual already_AddRefed<IDirect3DTexture9> GetAsTexture(gfx::IntSize* aSize)
   {
     return nullptr;
   }
 protected:
   LayerManagerD3D9 *mD3DManager;
 };
 /*
  * RAII helper for locking D3D9 textures.
  */
 class LockTextureRectD3D9
 {
 public:
   LockTextureRectD3D9(IDirect3DTexture9* aTexture)
     : mTexture(aTexture)
   {
     mLockResult = mTexture->LockRect(0, &mR, nullptr, 0);
   }
   ~LockTextureRectD3D9()
   {
     mTexture->UnlockRect(0);
   }
   bool HasLock() {
     return SUCCEEDED(mLockResult);
   }
   D3DLOCKED_RECT GetLockRect()
   {
     return mR;
   }
 private:
   LockTextureRectD3D9 (const LockTextureRectD3D9&);
   LockTextureRectD3D9& operator= (const LockTextureRectD3D9&);
   IDirect3DTexture9* mTexture;
   D3DLOCKED_RECT mR;
   HRESULT mLockResult;
 };
 } /* layers */
 } /* mozilla */
 #endif /* GFX_LAYERMANAGERD3D9_H */

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gfx/layers/d3d9/LayerManagerD3D9.h@6474c204b198 (annotated)

gfx/layers/d3d9/LayerManagerD3D9.h