The Tor Browser: gfx/layers/d3d9/CanvasLayerD3D9.cpp@6474c204b198 (annotated)

gfx/layers/d3d9/CanvasLayerD3D9.cpp@6474c204b198 (annotated)

gfx/layers/d3d9/CanvasLayerD3D9.cpp

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/. */
 #include "mozilla/layers/PLayerTransaction.h"
 #include "gfxWindowsSurface.h"
 #include "gfxWindowsPlatform.h"
 #include "SurfaceStream.h"
 #include "SharedSurfaceGL.h"
 #include "GLContext.h"
 #include "CanvasLayerD3D9.h"
 using namespace mozilla::gfx;
 using namespace mozilla::gl;
 namespace mozilla {
 namespace layers {
 CanvasLayerD3D9::CanvasLayerD3D9(LayerManagerD3D9 *aManager)
   : CanvasLayer(aManager, nullptr)
   , LayerD3D9(aManager)
   , mDataIsPremultiplied(false)
   , mNeedsYFlip(false)
   , mHasAlpha(true)
 {
     mImplData = static_cast<LayerD3D9*>(this);
     aManager->deviceManager()->mLayersWithResources.AppendElement(this);
 }
 CanvasLayerD3D9::~CanvasLayerD3D9()
 {
   if (mD3DManager) {
     mD3DManager->deviceManager()->mLayersWithResources.RemoveElement(this);
   }
 }
 void
 CanvasLayerD3D9::Initialize(const Data& aData)
 {
   NS_ASSERTION(mDrawTarget == nullptr, "BasicCanvasLayer::Initialize called twice!");
   if (aData.mDrawTarget) {
     mDrawTarget = aData.mDrawTarget;
     mNeedsYFlip = false;
     mDataIsPremultiplied = true;
   } else if (aData.mGLContext) {
     mGLContext = aData.mGLContext;
     NS_ASSERTION(mGLContext->IsOffscreen(), "Canvas GLContext must be offscreen.");
     mDataIsPremultiplied = aData.mIsGLAlphaPremult;
     mNeedsYFlip = true;
   } else {
     NS_ERROR("CanvasLayer created without mGLContext or mDrawTarget?");
   }
   mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
   CreateTexture();
 }
 void
 CanvasLayerD3D9::UpdateSurface()
 {
   if (!IsDirty() && mTexture)
     return;
   Painted();
   if (!mTexture) {
     CreateTexture();
     if (!mTexture) {
       NS_WARNING("CanvasLayerD3D9::Updated called but no texture present and creation failed!");
       return;
     }
   }
   RefPtr<SourceSurface> surface;
   if (mGLContext) {
     SharedSurface_GL* surf = mGLContext->RequestFrame();
     if (!surf)
         return;
     SharedSurface_Basic* shareSurf = SharedSurface_Basic::Cast(surf);
     surface = shareSurf->GetData();
   } else {
     surface = mDrawTarget->Snapshot();
   }
   // WebGL reads entire surface.
   LockTextureRectD3D9 textureLock(mTexture);
   if (!textureLock.HasLock()) {
     NS_WARNING("Failed to lock CanvasLayer texture.");
     return;
   }
   D3DLOCKED_RECT rect = textureLock.GetLockRect();
   IntSize boundsSize(mBounds.width, mBounds.height);
   RefPtr<DrawTarget> rectDt = Factory::CreateDrawTargetForData(BackendType::CAIRO,
                                                                (uint8_t*)rect.pBits,
                                                                boundsSize,
                                                                rect.Pitch,
                                                                SurfaceFormat::B8G8R8A8);
   Rect drawRect(0, 0, surface->GetSize().width, surface->GetSize().height);
   rectDt->DrawSurface(surface, drawRect, drawRect,
                       DrawSurfaceOptions(),  DrawOptions(1.0F, CompositionOp::OP_SOURCE));
   rectDt->Flush();
 }
 Layer*
 CanvasLayerD3D9::GetLayer()
 {
   return this;
 }
 void
 CanvasLayerD3D9::RenderLayer()
 {
   FirePreTransactionCallback();
   UpdateSurface();
   if (mD3DManager->CompositingDisabled()) {
     return;
   }
   FireDidTransactionCallback();
   if (!mTexture)
     return;
   /*
    * We flip the Y axis here, note we can only do this because we are in
    * CULL_NONE mode!
    */
   ShaderConstantRect quad(0, 0, mBounds.width, mBounds.height);
   if (mNeedsYFlip) {
     quad.mHeight = (float)-mBounds.height;
     quad.mY = (float)mBounds.height;
   }
   device()->SetVertexShaderConstantF(CBvLayerQuad, quad, 1);
   SetShaderTransformAndOpacity();
   if (mHasAlpha) {
     mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBALAYER, GetMaskLayer());
   } else {
     mD3DManager->SetShaderMode(DeviceManagerD3D9::RGBLAYER, GetMaskLayer());
   }
   if (mFilter == GraphicsFilter::FILTER_NEAREST) {
     device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT);
     device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT);
   }
   if (!mDataIsPremultiplied) {
     device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
     device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, TRUE);
   }
   device()->SetTexture(0, mTexture);
   device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
   if (!mDataIsPremultiplied) {
     device()->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
     device()->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, FALSE);
   }
   if (mFilter == GraphicsFilter::FILTER_NEAREST) {
     device()->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
     device()->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
   }
 }
 void
 CanvasLayerD3D9::CleanResources()
 {
   if (mD3DManager->deviceManager()->HasDynamicTextures()) {
     // In this case we have a texture in POOL_DEFAULT
     mTexture = nullptr;
   }
 }
 void
 CanvasLayerD3D9::LayerManagerDestroyed()
 {
   mD3DManager->deviceManager()->mLayersWithResources.RemoveElement(this);
   mD3DManager = nullptr;
 }
 void
 CanvasLayerD3D9::CreateTexture()
 {
   HRESULT hr;
   if (mD3DManager->deviceManager()->HasDynamicTextures()) {
     hr = device()->CreateTexture(mBounds.width, mBounds.height, 1, D3DUSAGE_DYNAMIC,
                                  D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT,
                                  getter_AddRefs(mTexture), nullptr);
   } else {
     // D3DPOOL_MANAGED is fine here since we require Dynamic Textures for D3D9Ex
     // devices.
     hr = device()->CreateTexture(mBounds.width, mBounds.height, 1, 0,
                                  D3DFMT_A8R8G8B8, D3DPOOL_MANAGED,
                                  getter_AddRefs(mTexture), nullptr);
   }
   if (FAILED(hr)) {
     mD3DManager->ReportFailure(NS_LITERAL_CSTRING("CanvasLayerD3D9::CreateTexture() failed"),
                                  hr);
     return;
   }
 }
 } /* namespace layers */
 } /* namespace mozilla */

The Tor Browser / annotate

gfx/layers/d3d9/CanvasLayerD3D9.cpp@6474c204b198 (annotated)

gfx/layers/d3d9/CanvasLayerD3D9.cpp