The Tor Browser: gfx/layers/d3d10/ContainerLayerD3D10.cpp@6474c204b198 (annotated)

gfx/layers/d3d10/ContainerLayerD3D10.cpp@6474c204b198 (annotated)

gfx/layers/d3d10/ContainerLayerD3D10.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 "ContainerLayerD3D10.h"
 #include "ThebesLayerD3D10.h"
 #include "ReadbackProcessor.h"
 using namespace mozilla::gfx;
 namespace mozilla {
 namespace layers {
 ContainerLayerD3D10::ContainerLayerD3D10(LayerManagerD3D10 *aManager)
   : ContainerLayer(aManager, nullptr)
   , LayerD3D10(aManager)
 {
   mImplData = static_cast<LayerD3D10*>(this);
 }
 ContainerLayerD3D10::~ContainerLayerD3D10()
 {
   while (mFirstChild) {
     RemoveChild(mFirstChild);
   }
 }
 Layer*
 ContainerLayerD3D10::GetLayer()
 {
   return this;
 }
 LayerD3D10*
 ContainerLayerD3D10::GetFirstChildD3D10()
 {
   if (!mFirstChild) {
     return nullptr;
   }
   return static_cast<LayerD3D10*>(mFirstChild->ImplData());
 }
 static inline LayerD3D10*
 GetNextSiblingD3D10(LayerD3D10* aLayer)
 {
    Layer* layer = aLayer->GetLayer()->GetNextSibling();
    return layer ? static_cast<LayerD3D10*>(layer->
                                            ImplData())
                 : nullptr;
 }
 void
 ContainerLayerD3D10::RenderLayer()
 {
   float renderTargetOffset[] = { 0, 0 };
   nsIntRect visibleRect = mVisibleRegion.GetBounds();
   float opacity = GetEffectiveOpacity();
   bool useIntermediate = UseIntermediateSurface();
   nsRefPtr<ID3D10RenderTargetView> previousRTView;
   nsRefPtr<ID3D10Texture2D> renderTexture;
   nsRefPtr<ID3D10RenderTargetView> rtView;
   float previousRenderTargetOffset[2];
   nsIntSize previousViewportSize;
   gfx3DMatrix oldViewMatrix;
   if (useIntermediate) {
     device()->OMGetRenderTargets(1, getter_AddRefs(previousRTView), nullptr);
     D3D10_TEXTURE2D_DESC desc;
     memset(&desc, 0, sizeof(D3D10_TEXTURE2D_DESC));
     desc.ArraySize = 1;
     desc.MipLevels = 1;
     desc.Width = visibleRect.width;
     desc.Height = visibleRect.height;
     desc.BindFlags = D3D10_BIND_RENDER_TARGET | D3D10_BIND_SHADER_RESOURCE;
     desc.SampleDesc.Count = 1;
     desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
     HRESULT hr;
     hr = device()->CreateTexture2D(&desc, nullptr, getter_AddRefs(renderTexture));
     if (FAILED(hr)) {
       LayerManagerD3D10::ReportFailure(NS_LITERAL_CSTRING("Failed to create new texture for ContainerLayerD3D10!"),
                                        hr);
       return;
     }
     hr = device()->CreateRenderTargetView(renderTexture, nullptr, getter_AddRefs(rtView));
     NS_ASSERTION(SUCCEEDED(hr), "Failed to create render target view for ContainerLayerD3D10!");
     effect()->GetVariableByName("vRenderTargetOffset")->
       GetRawValue(previousRenderTargetOffset, 0, 8);
     previousViewportSize = mD3DManager->GetViewport();
     if (mVisibleRegion.GetNumRects() != 1 || !(GetContentFlags() & CONTENT_OPAQUE)) {
       Matrix4x4 transform3D = GetEffectiveTransform();
       Matrix transform;
       // If we have an opaque ancestor layer, then we can be sure that
       // all the pixels we draw into are either opaque already or will be
       // covered by something opaque. Otherwise copying up the background is
       // not safe.
       if (mSupportsComponentAlphaChildren) {
         bool is2d = transform3D.Is2D(&transform);
         NS_ASSERTION(is2d, "Transform should be 2d when mSupportsComponentAlphaChildren.");
         // Copy background up from below. This applies any 2D transform that is
         // applied to use relative to our parent, and compensates for the offset
         // that was applied on our parent's rendering.
         D3D10_BOX srcBox;
         srcBox.left = std::max<int32_t>(visibleRect.x + int32_t(transform._31) - int32_t(previousRenderTargetOffset[0]), 0);
         srcBox.top = std::max<int32_t>(visibleRect.y + int32_t(transform._32) - int32_t(previousRenderTargetOffset[1]), 0);
         srcBox.right = std::min<int32_t>(srcBox.left + visibleRect.width, previousViewportSize.width);
         srcBox.bottom = std::min<int32_t>(srcBox.top + visibleRect.height, previousViewportSize.height);
         srcBox.back = 1;
         srcBox.front = 0;
         nsRefPtr<ID3D10Resource> srcResource;
         previousRTView->GetResource(getter_AddRefs(srcResource));
         device()->CopySubresourceRegion(renderTexture, 0,
 , 0, 0,
                                         srcResource, 0,
                                         &srcBox);
       } else {
         float black[] = { 0, 0, 0, 0};
         device()->ClearRenderTargetView(rtView, black);
       }
     }
     ID3D10RenderTargetView *rtViewPtr = rtView;
     device()->OMSetRenderTargets(1, &rtViewPtr, nullptr);
     renderTargetOffset[0] = (float)visibleRect.x;
     renderTargetOffset[1] = (float)visibleRect.y;
     effect()->GetVariableByName("vRenderTargetOffset")->
       SetRawValue(renderTargetOffset, 0, 8);
     mD3DManager->SetViewport(nsIntSize(visibleRect.Size()));
   }
   D3D10_RECT oldD3D10Scissor;
   UINT numRects = 1;
   device()->RSGetScissorRects(&numRects, &oldD3D10Scissor);
   // Convert scissor to an nsIntRect. D3D10_RECT's are exclusive
   // on the bottom and right values.
   nsIntRect oldScissor(oldD3D10Scissor.left,
                        oldD3D10Scissor.top,
                        oldD3D10Scissor.right - oldD3D10Scissor.left,
                        oldD3D10Scissor.bottom - oldD3D10Scissor.top);
   nsAutoTArray<Layer*, 12> children;
   SortChildrenBy3DZOrder(children);
   /*
    * Render this container's contents.
    */
   for (uint32_t i = 0; i < children.Length(); i++) {
     LayerD3D10* layerToRender = static_cast<LayerD3D10*>(children.ElementAt(i)->ImplData());
     if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
       continue;
     }
     nsIntRect scissorRect =
         layerToRender->GetLayer()->CalculateScissorRect(oldScissor, nullptr);
     if (scissorRect.IsEmpty()) {
       continue;
     }
     D3D10_RECT d3drect;
     d3drect.left = scissorRect.x;
     d3drect.top = scissorRect.y;
     d3drect.right = scissorRect.x + scissorRect.width;
     d3drect.bottom = scissorRect.y + scissorRect.height;
     device()->RSSetScissorRects(1, &d3drect);
     layerToRender->RenderLayer();
   }
   device()->RSSetScissorRects(1, &oldD3D10Scissor);
   if (useIntermediate) {
     mD3DManager->SetViewport(previousViewportSize);
     ID3D10RenderTargetView *rtView = previousRTView;
     device()->OMSetRenderTargets(1, &rtView, nullptr);
     effect()->GetVariableByName("vRenderTargetOffset")->
       SetRawValue(previousRenderTargetOffset, 0, 8);
     SetEffectTransformAndOpacity();
     ID3D10EffectTechnique *technique;
     if (LoadMaskTexture()) {
       if (GetTransform().CanDraw2D()) {
         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_MASK);
       } else {
         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_MASK_3D);
       }
     } else {
         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_NO_MASK);
     }
     effect()->GetVariableByName("vLayerQuad")->AsVector()->SetFloatVector(
       ShaderConstantRectD3D10(
         (float)visibleRect.x,
         (float)visibleRect.y,
         (float)visibleRect.width,
         (float)visibleRect.height)
       );
     technique->GetPassByIndex(0)->Apply(0);
     ID3D10ShaderResourceView *view;
     device()->CreateShaderResourceView(renderTexture, nullptr, &view);
     device()->PSSetShaderResources(0, 1, &view);
     device()->Draw(4, 0);
     view->Release();
   }
 }
 void
 ContainerLayerD3D10::LayerManagerDestroyed()
 {
   while (mFirstChild) {
     GetFirstChildD3D10()->LayerManagerDestroyed();
     RemoveChild(mFirstChild);
   }
 }
 void
 ContainerLayerD3D10::Validate()
 {
   nsIntRect visibleRect = mVisibleRegion.GetBounds();
   mSupportsComponentAlphaChildren = false;
   if (UseIntermediateSurface()) {
     Matrix4x4 transform3D = GetEffectiveTransform();
     Matrix transform;
     if (mVisibleRegion.GetNumRects() == 1 && (GetContentFlags() & CONTENT_OPAQUE)) {
       // don't need a background, we're going to paint all opaque stuff
       mSupportsComponentAlphaChildren = true;
     } else {
       if (HasOpaqueAncestorLayer(this) &&
           transform3D.Is2D(&transform) && !ThebesMatrix(transform).HasNonIntegerTranslation() &&
           GetParent()->GetEffectiveVisibleRegion().GetBounds().Contains(visibleRect))
       {
         // In this case we can copy up the background. See RenderLayer.
         mSupportsComponentAlphaChildren = true;
       }
     }
   } else {
     mSupportsComponentAlphaChildren = (GetContentFlags() & CONTENT_OPAQUE) ||
         (mParent && mParent->SupportsComponentAlphaChildren());
   }
   ReadbackProcessor readback;
   readback.BuildUpdates(this);
   Layer *layer = GetFirstChild();
   while (layer) {
     if (layer->GetType() == TYPE_THEBES) {
       static_cast<ThebesLayerD3D10*>(layer)->Validate(&readback);
     } else {
       static_cast<LayerD3D10*>(layer->ImplData())->Validate();
     }
     layer = layer->GetNextSibling();
   }
 }
 } /* layers */
 } /* mozilla */

The Tor Browser / annotate

gfx/layers/d3d10/ContainerLayerD3D10.cpp@6474c204b198 (annotated)

gfx/layers/d3d10/ContainerLayerD3D10.cpp