From 66a8a0359fcb971d9c4a939f38ea6de6c3a7ce88 Mon Sep 17 00:00:00 2001
From: Oleg Romashin <romaxa@gmail.com>
Date: Tue, 8 May 2012 12:40:41 -0700
Subject: [PATCH] Bug 752643 - Make CompositorParent eglSurface setup available
 for non-android environment. r=ajuma

---
 gfx/layers/ipc/CompositorParent.cpp | 29 +++++++++++++++++++----------
 gfx/layers/ipc/CompositorParent.h   |  7 ++++++-
 widget/xpwidgets/nsBaseWidget.cpp   | 10 +++++++++-
 3 files changed, 34 insertions(+), 12 deletions(-)

diff --git a/gfx/layers/ipc/CompositorParent.cpp b/gfx/layers/ipc/CompositorParent.cpp
index 4c138360a43..8c3be5e4de0 100644
--- a/gfx/layers/ipc/CompositorParent.cpp
+++ b/gfx/layers/ipc/CompositorParent.cpp
@@ -57,7 +57,9 @@ using base::Thread;
 namespace mozilla {
 namespace layers {
 
-CompositorParent::CompositorParent(nsIWidget* aWidget, MessageLoop* aMsgLoop, PlatformThreadId aThreadID)
+CompositorParent::CompositorParent(nsIWidget* aWidget, MessageLoop* aMsgLoop,
+                                   PlatformThreadId aThreadID, bool aRenderToEGLSurface,
+                                   int aSurfaceWidth, int aSurfaceHeight)
   : mWidget(aWidget)
   , mCurrentCompositeTask(NULL)
   , mPaused(false)
@@ -67,6 +69,8 @@ CompositorParent::CompositorParent(nsIWidget* aWidget, MessageLoop* aMsgLoop, Pl
   , mLayersUpdated(false)
   , mCompositorLoop(aMsgLoop)
   , mThreadID(aThreadID)
+  , mRenderToEGLSurface(aRenderToEGLSurface)
+  , mEGLSurfaceSize(aSurfaceWidth, aSurfaceHeight)
 {
   MOZ_COUNT_CTOR(CompositorParent);
 }
@@ -163,10 +167,20 @@ CompositorParent::ResumeComposition()
 #endif
 }
 
+void
+CompositorParent::SetEGLSurfaceSize(int width, int height)
+{
+  NS_ASSERTION(mRenderToEGLSurface, "Compositor created without RenderToEGLSurface ar provided");
+  mEGLSurfaceSize.SizeTo(width, height);
+  if (mLayerManager) {
+    static_cast<LayerManagerOGL*>(mLayerManager.get())->SetSurfaceSize(mEGLSurfaceSize.width, mEGLSurfaceSize.height);
+  }
+}
+
 void
 CompositorParent::ResumeCompositionAndResize(int width, int height)
 {
-  static_cast<LayerManagerOGL*>(mLayerManager.get())->SetSurfaceSize(width, height);
+  SetEGLSurfaceSize(width, height);
   ResumeComposition();
 }
 
@@ -434,14 +448,9 @@ PLayersParent*
 CompositorParent::AllocPLayers(const LayersBackend &backendType)
 {
   if (backendType == LayerManager::LAYERS_OPENGL) {
-#ifdef MOZ_JAVA_COMPOSITOR
-    nsIntRect rect;
-    mWidget->GetBounds(rect);
-    nsRefPtr<LayerManagerOGL> layerManager =
-      new LayerManagerOGL(mWidget, rect.width, rect.height, true);
-#else
-    nsRefPtr<LayerManagerOGL> layerManager = new LayerManagerOGL(mWidget);
-#endif
+    nsRefPtr<LayerManagerOGL> layerManager;
+    layerManager =
+      new LayerManagerOGL(mWidget, mEGLSurfaceSize.width, mEGLSurfaceSize.height, mRenderToEGLSurface);
     mWidget = NULL;
     mLayerManager = layerManager;
 
diff --git a/gfx/layers/ipc/CompositorParent.h b/gfx/layers/ipc/CompositorParent.h
index 0e1cccb337d..46e10b92fdb 100644
--- a/gfx/layers/ipc/CompositorParent.h
+++ b/gfx/layers/ipc/CompositorParent.h
@@ -86,7 +86,9 @@ class CompositorParent : public PCompositorParent,
 {
   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorParent)
 public:
-  CompositorParent(nsIWidget* aWidget, MessageLoop* aMsgLoop, PlatformThreadId aThreadID);
+  CompositorParent(nsIWidget* aWidget, MessageLoop* aMsgLoop,
+                   PlatformThreadId aThreadID, bool aRenderToEGLSurface = false,
+                   int aSurfaceWidth = -1, int aSurfaceHeight = -1);
 
   virtual ~CompositorParent();
 
@@ -119,6 +121,7 @@ protected:
   virtual void SetPageSize(float aZoom, float aPageWidth, float aPageHeight, float aCssPageWidth, float aCssPageHeight);
   virtual void SyncViewportInfo(const nsIntRect& aDisplayPort, float aDisplayResolution, bool aLayersUpdated,
                                 nsIntPoint& aScrollOffset, float& aScaleX, float& aScaleY);
+  void SetEGLSurfaceSize(int width, int height);
 
 private:
   void PauseComposition();
@@ -164,6 +167,8 @@ private:
 
   MessageLoop* mCompositorLoop;
   PlatformThreadId mThreadID;
+  bool mRenderToEGLSurface;
+  nsIntSize mEGLSurfaceSize;
 
   DISALLOW_EVIL_CONSTRUCTORS(CompositorParent);
 };
diff --git a/widget/xpwidgets/nsBaseWidget.cpp b/widget/xpwidgets/nsBaseWidget.cpp
index 619d2829bae..f4221c3007e 100644
--- a/widget/xpwidgets/nsBaseWidget.cpp
+++ b/widget/xpwidgets/nsBaseWidget.cpp
@@ -874,7 +874,15 @@ void nsBaseWidget::CreateCompositor()
 {
   mCompositorThread = new Thread("CompositorThread");
   if (mCompositorThread->Start()) {
-    mCompositorParent = new CompositorParent(this, mCompositorThread->message_loop(), mCompositorThread->thread_id());
+    bool renderToEGLSurface = false;
+#ifdef MOZ_JAVA_COMPOSITOR
+    renderToEGLSurface = true;
+#endif
+    nsIntRect rect;
+    GetBounds(rect);
+    mCompositorParent =
+      new CompositorParent(this, mCompositorThread->message_loop(), mCompositorThread->thread_id(),
+                           renderToEGLSurface, rect.width, rect.height);
     LayerManager* lm = CreateBasicLayerManager();
     MessageLoop *childMessageLoop = mCompositorThread->message_loop();
     mCompositorChild = new CompositorChild(lm);