diff --git a/Source/WebKit2/ChangeLog b/Source/WebKit2/ChangeLog
index 73791a0..11021a6 100644
--- a/Source/WebKit2/ChangeLog
+++ b/Source/WebKit2/ChangeLog
@@ -1,3 +1,20 @@
+2014-02-07  Dean Jackson  <dino@apple.com>
+
+        WebGL doesn't update with remotely hosted layers
+        https://bugs.webkit.org/show_bug.cgi?id=128390
+
+        Reviewed by Simon Fraser.
+
+        PlatformCALayerRemote was intercepting the setNeedsDisplay calls to
+        WebGL layers, and thus causing them to not draw. Fix this by adding an
+        override in PlatformCALayerRemoteCustom to check if it is a WebGLLayer
+        and call setNeedsDisplay directly.
+
+        * WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.h:
+        * WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm:
+        (PlatformCALayerRemoteCustom::PlatformCALayerRemoteCustom):
+        (PlatformCALayerRemoteCustom::setNeedsDisplay):
+
 2014-02-07  Benjamin Poulain  <bpoulain@apple.com>
 
         [WK2] Fitler touch events only based on touch start
diff --git a/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.h b/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.h
index 332b720..e69b569 100644
--- a/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.h
+++ b/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.h
@@ -41,11 +41,14 @@
 
     virtual uint32_t hostingContextID() override;
 
+    virtual void setNeedsDisplay(const WebCore::FloatRect* dirtyRect = 0) override;
+
 private:
     PlatformCALayerRemoteCustom(PlatformLayer*, WebCore::PlatformCALayerClient* owner, RemoteLayerTreeContext*);
 
     std::unique_ptr<LayerHostingContext> m_layerHostingContext;
     RetainPtr<PlatformLayer> m_platformLayer;
+    bool m_providesContents;
 };
 
 } // namespace WebKit
diff --git a/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm b/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm
index 95a1dda..deec9f4 100644
--- a/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm
+++ b/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm
@@ -57,6 +57,8 @@
 
     m_platformLayer = customLayer;
     [customLayer web_disableAllActions];
+
+    m_providesContents = [customLayer isKindOfClass:NSClassFromString(@"WebGLLayer")];
 }
 
 PlatformCALayerRemoteCustom::~PlatformCALayerRemoteCustom()
@@ -67,3 +69,14 @@
 {
     return m_layerHostingContext->contextID();
 }
+
+void PlatformCALayerRemoteCustom::setNeedsDisplay(const FloatRect* rect)
+{
+    if (m_providesContents) {
+        if (rect)
+            [m_platformLayer setNeedsDisplayInRect:*rect];
+        else
+            [m_platformLayer setNeedsDisplay];
+    } else
+        PlatformCALayerRemote::setNeedsDisplay(rect);
+}