From 9edb022892168b83e6bca322462fc2432cceee5e Mon Sep 17 00:00:00 2001
From: Chris Jones <jones.chris.g@gmail.com>
Date: Tue, 9 Aug 2011 12:38:27 -0700
Subject: [PATCH] Bug 648484, part D: Allow PuppetWidgets to create D3D10 layer
 managers (for the time being). r=roc

---
 layout/ipc/RenderFrameParent.cpp      | 27 +++++-----------------
 widget/src/xpwidgets/Makefile.in      |  4 ++++
 widget/src/xpwidgets/PuppetWidget.cpp | 33 ++++++++++++++++++++++-----
 3 files changed, 37 insertions(+), 27 deletions(-)

diff --git a/layout/ipc/RenderFrameParent.cpp b/layout/ipc/RenderFrameParent.cpp
index b8b772fc45f1..9ce7b5dad1d3 100644
--- a/layout/ipc/RenderFrameParent.cpp
+++ b/layout/ipc/RenderFrameParent.cpp
@@ -728,29 +728,14 @@ RenderFrameParent::AllocPLayers(LayerManager::LayersBackend* aBackendType)
     *aBackendType = LayerManager::LAYERS_NONE;
     return nsnull;
   }
-
   LayerManager* lm = GetLayerManager();
-  switch (*aBackendType = lm->GetBackendType()) {
-  case LayerManager::LAYERS_BASIC: {
-    BasicShadowLayerManager* bslm = static_cast<BasicShadowLayerManager*>(lm);
-    return new ShadowLayersParent(bslm);
-  }
-  case LayerManager::LAYERS_OPENGL: {
-    LayerManagerOGL* lmo = static_cast<LayerManagerOGL*>(lm);
-    return new ShadowLayersParent(lmo);
-  }
-#ifdef MOZ_ENABLE_D3D9_LAYER
-  case LayerManager::LAYERS_D3D9: {
-    LayerManagerD3D9* lmd3d9 = static_cast<LayerManagerD3D9*>(lm);
-    return new ShadowLayersParent(lmd3d9);
-  }
-#endif //MOZ_ENABLE_D3D9_LAYER
-  default: {
-    NS_WARNING("shadow layers no sprechen D3D backend yet");
-    *aBackendType = LayerManager::LAYERS_NONE;
-    return nsnull;
-  }
+  ShadowLayerManager* slm = lm->AsShadowManager();
+  if (!slm) {
+     NS_WARNING("shadow layers no sprechen D3D backend yet");
+     return nsnull;
   }
+  *aBackendType = lm->GetBackendType();
+  return new ShadowLayersParent(slm);
 }
 
 bool
diff --git a/widget/src/xpwidgets/Makefile.in b/widget/src/xpwidgets/Makefile.in
index 9c763ff9e6d1..38dc02601953 100644
--- a/widget/src/xpwidgets/Makefile.in
+++ b/widget/src/xpwidgets/Makefile.in
@@ -97,6 +97,10 @@ ifdef MOZ_X11
 SHARED_LIBRARY_LIBS += ../shared/x11/$(LIB_PREFIX)widget_shared_x11.$(LIB_SUFFIX)
 endif
 
+ifdef MOZ_ENABLE_D3D10_LAYER
+DEFINES		+= -DMOZ_ENABLE_D3D10_LAYER
+endif
+
 LOCAL_INCLUDES	+= \
 		-I$(srcdir)/../$(MOZ_WIDGET_TOOLKIT) \
 		-I$(srcdir)/../shared \
diff --git a/widget/src/xpwidgets/PuppetWidget.cpp b/widget/src/xpwidgets/PuppetWidget.cpp
index 3a77af344e9b..a282e22a2720 100644
--- a/widget/src/xpwidgets/PuppetWidget.cpp
+++ b/widget/src/xpwidgets/PuppetWidget.cpp
@@ -40,6 +40,9 @@
 
 #include "mozilla/dom/PBrowserChild.h"
 #include "BasicLayers.h"
+#if defined(MOZ_ENABLE_D3D10_LAYER)
+# include "LayerManagerD3D10.h"
+#endif
 
 #include "gfxPlatform.h"
 #include "PuppetWidget.h"
@@ -336,8 +339,21 @@ PuppetWidget::GetLayerManager(PLayersChild* aShadowManager,
                               bool* aAllowRetaining)
 {
   if (!mLayerManager) {
-    mLayerManager = new BasicShadowLayerManager(this);
-    mLayerManager->AsShadowForwarder()->SetShadowManager(aShadowManager);
+    // The backend hint is a temporary placeholder until Azure, when
+    // all content-process layer managers will be BasicLayerManagers.
+#if defined(MOZ_ENABLE_D3D10_LAYER)
+    if (LayerManager::LAYERS_D3D10 == aBackendHint) {
+      nsRefPtr<LayerManagerD3D10> m = new LayerManagerD3D10(this);
+      m->AsShadowForwarder()->SetShadowManager(aShadowManager);
+      if (m->Initialize()) {
+        mLayerManager = m;
+      }
+    }
+#endif
+    if (!mLayerManager) {
+      mLayerManager = new BasicShadowLayerManager(this);
+      mLayerManager->AsShadowForwarder()->SetShadowManager(aShadowManager);
+    }
   }
   if (aAllowRetaining) {
     *aAllowRetaining = true;
@@ -542,10 +558,15 @@ PuppetWidget::DispatchPaintEvent()
                          nsCAutoString("PuppetWidget"), nsnull);
 #endif
 
-    nsRefPtr<gfxContext> ctx = new gfxContext(mSurface);
-    AutoLayerManagerSetup setupLayerManager(this, ctx,
-                                            BasicLayerManager::BUFFER_NONE);
-    DispatchEvent(&event, status);  
+    LayerManager* lm = GetLayerManager();
+    if (LayerManager::LAYERS_D3D10 == mLayerManager->GetBackendType()) {
+      DispatchEvent(&event, status);
+    } else {
+      nsRefPtr<gfxContext> ctx = new gfxContext(mSurface);
+      AutoLayerManagerSetup setupLayerManager(this, ctx,
+                                              BasicLayerManager::BUFFER_NONE);
+      DispatchEvent(&event, status);  
+    }
   }
 
   nsPaintEvent didPaintEvent(PR_TRUE, NS_DID_PAINT, this);