michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "ContainerLayerD3D10.h"
michael@0: 
michael@0: #include "ThebesLayerD3D10.h"
michael@0: #include "ReadbackProcessor.h"
michael@0: 
michael@0: using namespace mozilla::gfx;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: ContainerLayerD3D10::ContainerLayerD3D10(LayerManagerD3D10 *aManager)
michael@0:   : ContainerLayer(aManager, nullptr)
michael@0:   , LayerD3D10(aManager)
michael@0: {
michael@0:   mImplData = static_cast<LayerD3D10*>(this);
michael@0: }
michael@0: 
michael@0: ContainerLayerD3D10::~ContainerLayerD3D10()
michael@0: {
michael@0:   while (mFirstChild) {
michael@0:     RemoveChild(mFirstChild);
michael@0:   }
michael@0: }
michael@0: 
michael@0: Layer*
michael@0: ContainerLayerD3D10::GetLayer()
michael@0: {
michael@0:   return this;
michael@0: }
michael@0: 
michael@0: LayerD3D10*
michael@0: ContainerLayerD3D10::GetFirstChildD3D10()
michael@0: {
michael@0:   if (!mFirstChild) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   return static_cast<LayerD3D10*>(mFirstChild->ImplData());
michael@0: }
michael@0: 
michael@0: static inline LayerD3D10*
michael@0: GetNextSiblingD3D10(LayerD3D10* aLayer)
michael@0: {
michael@0:    Layer* layer = aLayer->GetLayer()->GetNextSibling();
michael@0:    return layer ? static_cast<LayerD3D10*>(layer->
michael@0:                                            ImplData())
michael@0:                 : nullptr;
michael@0: }
michael@0: 
michael@0: void
michael@0: ContainerLayerD3D10::RenderLayer()
michael@0: {
michael@0:   float renderTargetOffset[] = { 0, 0 };
michael@0: 
michael@0:   nsIntRect visibleRect = mVisibleRegion.GetBounds();
michael@0:   float opacity = GetEffectiveOpacity();
michael@0:   bool useIntermediate = UseIntermediateSurface();
michael@0: 
michael@0:   nsRefPtr<ID3D10RenderTargetView> previousRTView;
michael@0:   nsRefPtr<ID3D10Texture2D> renderTexture;
michael@0:   nsRefPtr<ID3D10RenderTargetView> rtView;
michael@0:   float previousRenderTargetOffset[2];
michael@0:   nsIntSize previousViewportSize;
michael@0: 
michael@0:   gfx3DMatrix oldViewMatrix;
michael@0: 
michael@0:   if (useIntermediate) {
michael@0:     device()->OMGetRenderTargets(1, getter_AddRefs(previousRTView), nullptr);
michael@0:  
michael@0:     D3D10_TEXTURE2D_DESC desc;
michael@0:     memset(&desc, 0, sizeof(D3D10_TEXTURE2D_DESC));
michael@0:     desc.ArraySize = 1;
michael@0:     desc.MipLevels = 1;
michael@0:     desc.Width = visibleRect.width;
michael@0:     desc.Height = visibleRect.height;
michael@0:     desc.BindFlags = D3D10_BIND_RENDER_TARGET | D3D10_BIND_SHADER_RESOURCE;
michael@0:     desc.SampleDesc.Count = 1;
michael@0:     desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
michael@0:     HRESULT hr;
michael@0:     hr = device()->CreateTexture2D(&desc, nullptr, getter_AddRefs(renderTexture));
michael@0: 
michael@0:     if (FAILED(hr)) {
michael@0:       LayerManagerD3D10::ReportFailure(NS_LITERAL_CSTRING("Failed to create new texture for ContainerLayerD3D10!"), 
michael@0:                                        hr);
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     hr = device()->CreateRenderTargetView(renderTexture, nullptr, getter_AddRefs(rtView));
michael@0:     NS_ASSERTION(SUCCEEDED(hr), "Failed to create render target view for ContainerLayerD3D10!");
michael@0: 
michael@0:     effect()->GetVariableByName("vRenderTargetOffset")->
michael@0:       GetRawValue(previousRenderTargetOffset, 0, 8);
michael@0: 
michael@0:     previousViewportSize = mD3DManager->GetViewport();
michael@0: 
michael@0:     if (mVisibleRegion.GetNumRects() != 1 || !(GetContentFlags() & CONTENT_OPAQUE)) {
michael@0:       Matrix4x4 transform3D = GetEffectiveTransform();
michael@0:       Matrix transform;
michael@0:       // If we have an opaque ancestor layer, then we can be sure that
michael@0:       // all the pixels we draw into are either opaque already or will be
michael@0:       // covered by something opaque. Otherwise copying up the background is
michael@0:       // not safe.
michael@0:       if (mSupportsComponentAlphaChildren) {
michael@0:         bool is2d = transform3D.Is2D(&transform);
michael@0:         NS_ASSERTION(is2d, "Transform should be 2d when mSupportsComponentAlphaChildren.");
michael@0: 
michael@0:         // Copy background up from below. This applies any 2D transform that is
michael@0:         // applied to use relative to our parent, and compensates for the offset
michael@0:         // that was applied on our parent's rendering.
michael@0:         D3D10_BOX srcBox;
michael@0:         srcBox.left = std::max<int32_t>(visibleRect.x + int32_t(transform._31) - int32_t(previousRenderTargetOffset[0]), 0);
michael@0:         srcBox.top = std::max<int32_t>(visibleRect.y + int32_t(transform._32) - int32_t(previousRenderTargetOffset[1]), 0);
michael@0:         srcBox.right = std::min<int32_t>(srcBox.left + visibleRect.width, previousViewportSize.width);
michael@0:         srcBox.bottom = std::min<int32_t>(srcBox.top + visibleRect.height, previousViewportSize.height);
michael@0:         srcBox.back = 1;
michael@0:         srcBox.front = 0;
michael@0: 
michael@0:         nsRefPtr<ID3D10Resource> srcResource;
michael@0:         previousRTView->GetResource(getter_AddRefs(srcResource));
michael@0: 
michael@0:         device()->CopySubresourceRegion(renderTexture, 0,
michael@0:                                         0, 0, 0,
michael@0:                                         srcResource, 0,
michael@0:                                         &srcBox);
michael@0:       } else {
michael@0:         float black[] = { 0, 0, 0, 0};
michael@0:         device()->ClearRenderTargetView(rtView, black);
michael@0:       }
michael@0:     }
michael@0: 
michael@0:     ID3D10RenderTargetView *rtViewPtr = rtView;
michael@0:     device()->OMSetRenderTargets(1, &rtViewPtr, nullptr);
michael@0: 
michael@0:     renderTargetOffset[0] = (float)visibleRect.x;
michael@0:     renderTargetOffset[1] = (float)visibleRect.y;
michael@0:     effect()->GetVariableByName("vRenderTargetOffset")->
michael@0:       SetRawValue(renderTargetOffset, 0, 8);
michael@0: 
michael@0:     mD3DManager->SetViewport(nsIntSize(visibleRect.Size()));
michael@0:   }
michael@0:     
michael@0:   D3D10_RECT oldD3D10Scissor;
michael@0:   UINT numRects = 1;
michael@0:   device()->RSGetScissorRects(&numRects, &oldD3D10Scissor);
michael@0:   // Convert scissor to an nsIntRect. D3D10_RECT's are exclusive
michael@0:   // on the bottom and right values.
michael@0:   nsIntRect oldScissor(oldD3D10Scissor.left,
michael@0:                        oldD3D10Scissor.top,
michael@0:                        oldD3D10Scissor.right - oldD3D10Scissor.left,
michael@0:                        oldD3D10Scissor.bottom - oldD3D10Scissor.top);
michael@0: 
michael@0:   nsAutoTArray<Layer*, 12> children;
michael@0:   SortChildrenBy3DZOrder(children);
michael@0: 
michael@0:   /*
michael@0:    * Render this container's contents.
michael@0:    */
michael@0:   for (uint32_t i = 0; i < children.Length(); i++) {
michael@0:     LayerD3D10* layerToRender = static_cast<LayerD3D10*>(children.ElementAt(i)->ImplData());
michael@0: 
michael@0:     if (layerToRender->GetLayer()->GetEffectiveVisibleRegion().IsEmpty()) {
michael@0:       continue;
michael@0:     }
michael@0:     
michael@0:     nsIntRect scissorRect =
michael@0:         layerToRender->GetLayer()->CalculateScissorRect(oldScissor, nullptr);
michael@0:     if (scissorRect.IsEmpty()) {
michael@0:       continue;
michael@0:     }
michael@0: 
michael@0:     D3D10_RECT d3drect;
michael@0:     d3drect.left = scissorRect.x;
michael@0:     d3drect.top = scissorRect.y;
michael@0:     d3drect.right = scissorRect.x + scissorRect.width;
michael@0:     d3drect.bottom = scissorRect.y + scissorRect.height;
michael@0:     device()->RSSetScissorRects(1, &d3drect);
michael@0: 
michael@0:     layerToRender->RenderLayer();
michael@0:   }
michael@0: 
michael@0:   device()->RSSetScissorRects(1, &oldD3D10Scissor);
michael@0: 
michael@0:   if (useIntermediate) {
michael@0:     mD3DManager->SetViewport(previousViewportSize);
michael@0:     ID3D10RenderTargetView *rtView = previousRTView;
michael@0:     device()->OMSetRenderTargets(1, &rtView, nullptr);
michael@0:     effect()->GetVariableByName("vRenderTargetOffset")->
michael@0:       SetRawValue(previousRenderTargetOffset, 0, 8);
michael@0: 
michael@0:     SetEffectTransformAndOpacity();
michael@0: 
michael@0:     ID3D10EffectTechnique *technique;
michael@0:     if (LoadMaskTexture()) {
michael@0:       if (GetTransform().CanDraw2D()) {
michael@0:         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_MASK);
michael@0:       } else {
michael@0:         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_MASK_3D);
michael@0:       }
michael@0:     } else {
michael@0:         technique = SelectShader(SHADER_RGBA | SHADER_PREMUL | SHADER_NO_MASK);
michael@0:     }
michael@0: 
michael@0:     effect()->GetVariableByName("vLayerQuad")->AsVector()->SetFloatVector(
michael@0:       ShaderConstantRectD3D10(
michael@0:         (float)visibleRect.x,
michael@0:         (float)visibleRect.y,
michael@0:         (float)visibleRect.width,
michael@0:         (float)visibleRect.height)
michael@0:       );
michael@0: 
michael@0:     technique->GetPassByIndex(0)->Apply(0);
michael@0: 
michael@0:     ID3D10ShaderResourceView *view;
michael@0:     device()->CreateShaderResourceView(renderTexture, nullptr, &view);
michael@0:     device()->PSSetShaderResources(0, 1, &view);    
michael@0:     device()->Draw(4, 0);
michael@0:     view->Release();
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: ContainerLayerD3D10::LayerManagerDestroyed()
michael@0: {
michael@0:   while (mFirstChild) {
michael@0:     GetFirstChildD3D10()->LayerManagerDestroyed();
michael@0:     RemoveChild(mFirstChild);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: ContainerLayerD3D10::Validate()
michael@0: {
michael@0:   nsIntRect visibleRect = mVisibleRegion.GetBounds();
michael@0: 
michael@0:   mSupportsComponentAlphaChildren = false;
michael@0: 
michael@0:   if (UseIntermediateSurface()) {
michael@0:     Matrix4x4 transform3D = GetEffectiveTransform();
michael@0:     Matrix transform;
michael@0: 
michael@0:     if (mVisibleRegion.GetNumRects() == 1 && (GetContentFlags() & CONTENT_OPAQUE)) {
michael@0:       // don't need a background, we're going to paint all opaque stuff
michael@0:       mSupportsComponentAlphaChildren = true;
michael@0:     } else {
michael@0:       if (HasOpaqueAncestorLayer(this) &&
michael@0:           transform3D.Is2D(&transform) && !ThebesMatrix(transform).HasNonIntegerTranslation() &&
michael@0:           GetParent()->GetEffectiveVisibleRegion().GetBounds().Contains(visibleRect))
michael@0:       {
michael@0:         // In this case we can copy up the background. See RenderLayer.
michael@0:         mSupportsComponentAlphaChildren = true;
michael@0:       }
michael@0:     }
michael@0:   } else {
michael@0:     mSupportsComponentAlphaChildren = (GetContentFlags() & CONTENT_OPAQUE) ||
michael@0:         (mParent && mParent->SupportsComponentAlphaChildren());
michael@0:   }
michael@0: 
michael@0:   ReadbackProcessor readback;
michael@0:   readback.BuildUpdates(this);
michael@0: 
michael@0:   Layer *layer = GetFirstChild();
michael@0:   while (layer) {
michael@0:     if (layer->GetType() == TYPE_THEBES) {
michael@0:       static_cast<ThebesLayerD3D10*>(layer)->Validate(&readback);
michael@0:     } else {
michael@0:       static_cast<LayerD3D10*>(layer->ImplData())->Validate();
michael@0:     }
michael@0:     layer = layer->GetNextSibling();
michael@0:   }
michael@0: }
michael@0: 
michael@0: } /* layers */
michael@0: } /* mozilla */