The Tor Browser: gfx/layers/d3d10/LayerManagerD3D10.h@6474c204b198 (annotated)

gfx/layers/d3d10/LayerManagerD3D10.h@6474c204b198 (annotated)

gfx/layers/d3d10/LayerManagerD3D10.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: 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_LAYERMANAGERD3D10_H
 #define GFX_LAYERMANAGERD3D10_H
 #include "Layers.h"
 #include <windows.h>
 #include <d3d10_1.h>
 #include "gfxContext.h"
 #include "mozilla/gfx/UserData.h"
 #include "nsIWidget.h"
 #include "ReadbackManagerD3D10.h"
 namespace mozilla {
 namespace layers {
 class DummyRoot;
 class Nv3DVUtils;
 /**
  * This structure is used to pass rectangles to our shader constant. We can use
  * this for passing rectangular areas to SetVertexShaderConstant. In the format
  * of a 4 component float(x,y,width,height). Our vertex shader can then use
  * this to construct rectangular positions from the 0,0-1,1 quad that we source
  * it with.
  */
 struct ShaderConstantRectD3D10
 {
   float mX, mY, mWidth, mHeight;
   ShaderConstantRectD3D10(float aX, float aY, float aWidth, float aHeight)
     : mX(aX), mY(aY), mWidth(aWidth), mHeight(aHeight)
   { }
   // For easy passing to SetVertexShaderConstantF.
   operator float* () { return &mX; }
 };
 /*
  * This is the LayerManager used for Direct3D 10. For now this will
  * render on the main thread.
  *
  * For the time being, LayerManagerD3D10 forwards layers
  * transactions.
  */
 class LayerManagerD3D10 : public LayerManager {
   typedef mozilla::gfx::DrawTarget DrawTarget;
   typedef mozilla::gfx::IntSize IntSize;
   typedef mozilla::gfx::SurfaceFormat SurfaceFormat;
 public:
   LayerManagerD3D10(nsIWidget *aWidget);
   virtual ~LayerManagerD3D10();
   /*
    * 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, HRESULT* aHresultPtr = nullptr);
   /*
    * LayerManager implementation.
    */
   virtual void Destroy();
   virtual void SetRoot(Layer *aLayer);
   virtual void BeginTransaction();
   virtual void BeginTransactionWithTarget(gfxContext* aTarget);
   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; }
   // D3D10 guarantees textures can be at least this size
   enum {
     MAX_TEXTURE_SIZE = 8192
   };
   virtual bool CanUseCanvasLayerForSize(const gfx::IntSize &aSize)
   {
     return aSize <= gfx::IntSize(MAX_TEXTURE_SIZE, MAX_TEXTURE_SIZE);
   }
   virtual int32_t GetMaxTextureSize() const
   {
     return MAX_TEXTURE_SIZE;
   }
   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 TemporaryRef<DrawTarget>
     CreateOptimalDrawTarget(const IntSize &aSize,
                             SurfaceFormat aSurfaceFormat);
   virtual TemporaryRef<DrawTarget>
     CreateOptimalMaskDrawTarget(const IntSize &aSize);
   virtual TemporaryRef<mozilla::gfx::DrawTarget>
     CreateDrawTarget(const gfx::IntSize &aSize,
                      mozilla::gfx::SurfaceFormat aFormat);
   virtual LayersBackend GetBackendType() { return LayersBackend::LAYERS_D3D10; }
   virtual void GetBackendName(nsAString& name) { name.AssignLiteral("Direct3D 10"); }
   virtual const char* Name() const { return "D3D10"; }
   // Public helpers
   ID3D10Device1 *device() const { return mDevice; }
   ID3D10Effect *effect() const { return mEffect; }
   IDXGISwapChain *SwapChain() const
   {
     return mSwapChain;
   }
   ReadbackManagerD3D10 *readbackManager();
   void SetupInputAssembler();
   void SetViewport(const nsIntSize &aViewport);
   const nsIntSize &GetViewport() { return mViewport; }
   /**
    * Return pointer to the Nv3DVUtils instance
    */
   Nv3DVUtils *GetNv3DVUtils()  { return mNv3DVUtils; }
   static void ReportFailure(const nsACString &aMsg, HRESULT aCode);
 private:
   void SetupPipeline();
   void UpdateRenderTarget();
   void VerifyBufferSize();
   void EnsureReadbackManager();
   void Render(EndTransactionFlags aFlags);
   nsRefPtr<ID3D10Device1> mDevice;
   nsRefPtr<ID3D10Effect> mEffect;
   nsRefPtr<ID3D10InputLayout> mInputLayout;
   nsRefPtr<ID3D10Buffer> mVertexBuffer;
   nsRefPtr<ReadbackManagerD3D10> mReadbackManager;
   nsRefPtr<ID3D10RenderTargetView> mRTView;
   nsRefPtr<IDXGISwapChain> mSwapChain;
   nsIWidget *mWidget;
   bool mDisableSequenceForNextFrame;
   CallbackInfo mCurrentCallbackInfo;
   nsIntSize mViewport;
   /* Nv3DVUtils instance */
   nsAutoPtr<Nv3DVUtils> mNv3DVUtils;
   /*
    * Context target, nullptr when drawing directly to our swap chain.
    */
   nsRefPtr<gfxContext> mTarget;
   /*
    * Copies the content of our backbuffer to the set transaction target.
    */
   void PaintToTarget();
 };
 /*
  * General information and tree management for OGL layers.
  */
 class LayerD3D10
 {
 public:
   LayerD3D10(LayerManagerD3D10 *aManager);
   virtual LayerD3D10 *GetFirstChildD3D10() { return nullptr; }
   void SetFirstChild(LayerD3D10 *aParent);
   virtual Layer* GetLayer() = 0;
   /**
    * This will render a child layer to whatever render target is currently
    * active.
    */
   virtual void RenderLayer() = 0;
   virtual void Validate() {}
   ID3D10Device1 *device() const { return mD3DManager->device(); }
   ID3D10Effect *effect() const { return mD3DManager->effect(); }
   /* Called by the layer manager when it's destroyed */
   virtual void LayerManagerDestroyed() {}
   /**
    * Return pointer to the Nv3DVUtils instance. Calls equivalent method in LayerManager.
    */
   Nv3DVUtils *GetNv3DVUtils()  { return mD3DManager->GetNv3DVUtils(); }
   /*
    * Returns a shader resource view of 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, it will contain the size of the texture.
    */
   virtual already_AddRefed<ID3D10ShaderResourceView> GetAsTexture(gfx::IntSize* aSize)
   {
     return nullptr;
   }
   void SetEffectTransformAndOpacity()
   {
     Layer* layer = GetLayer();
     const gfx::Matrix4x4& transform = layer->GetEffectiveTransform();
     void* raw = &const_cast<gfx::Matrix4x4&>(transform)._11;
     effect()->GetVariableByName("mLayerTransform")->SetRawValue(raw, 0, 64);
     effect()->GetVariableByName("fLayerOpacity")->AsScalar()->SetFloat(layer->GetEffectiveOpacity());
   }
 protected:
   /*
    * Finds a texture for this layer's mask layer (if it has one) and sets it
    * as an input to the shaders.
    * Returns SHADER_MASK if a texture is loaded, SHADER_NO_MASK if there was no
    * mask layer, or a texture for the mask layer could not be loaded.
    */
   uint8_t LoadMaskTexture();
   /**
    * Select a shader technique using a combination of the following flags.
    * Not all combinations of flags are supported, and might cause an error,
    * check the fx file to see which shaders exist. In particular, aFlags should
    * include any combination of the 0x20 bit = 0 flags OR one of the 0x20 bit = 1
    * flags. Mask flags can be used in either case.
    */
   ID3D10EffectTechnique* SelectShader(uint8_t aFlags);
   const static uint8_t SHADER_NO_MASK = 0;
   const static uint8_t SHADER_MASK = 0x1;
   const static uint8_t SHADER_MASK_3D = 0x2;
   // 0x20 bit = 0
   const static uint8_t SHADER_RGB = 0;
   const static uint8_t SHADER_RGBA = 0x4;
   const static uint8_t SHADER_NON_PREMUL = 0;
   const static uint8_t SHADER_PREMUL = 0x8;
   const static uint8_t SHADER_LINEAR = 0;
   const static uint8_t SHADER_POINT = 0x10;
   // 0x20 bit = 1
   const static uint8_t SHADER_YCBCR = 0x20;
   const static uint8_t SHADER_COMPONENT_ALPHA = 0x24;
   const static uint8_t SHADER_SOLID = 0x28;
   LayerManagerD3D10 *mD3DManager;
 };
 } /* layers */
 } /* mozilla */
 #endif /* GFX_LAYERMANAGERD3D9_H */

The Tor Browser / annotate

gfx/layers/d3d10/LayerManagerD3D10.h@6474c204b198 (annotated)

gfx/layers/d3d10/LayerManagerD3D10.h