diff -r 000000000000 -r 6474c204b198 gfx/layers/d3d9/ColorLayerD3D9.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/d3d9/ColorLayerD3D9.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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 "ColorLayerD3D9.h"
+
+namespace mozilla {
+namespace layers {
+
+Layer*
+ColorLayerD3D9::GetLayer()
+{
+  return this;
+}
+
+static void
+RenderColorLayerD3D9(ColorLayer* aLayer, LayerManagerD3D9 *aManager)
+{
+  // XXX we might be able to improve performance by using
+  // IDirect3DDevice9::Clear
+  if (aManager->CompositingDisabled()) {
+    return;
+  }
+
+  nsIntRect bounds = aLayer->GetBounds();
+
+  aManager->device()->SetVertexShaderConstantF(
+    CBvLayerQuad,
+    ShaderConstantRect(bounds.x,
+                       bounds.y,
+                       bounds.width,
+                       bounds.height),
+    1);
+
+  const gfx::Matrix4x4& transform = aLayer->GetEffectiveTransform();
+  aManager->device()->SetVertexShaderConstantF(CBmLayerTransform, &transform._11, 4);
+
+  gfxRGBA layerColor(aLayer->GetColor());
+  float color[4];
+  float opacity = aLayer->GetEffectiveOpacity() * layerColor.a;
+  // output color is premultiplied, so we need to adjust all channels.
+  // mColor is not premultiplied.
+  color[0] = (float)(layerColor.r * opacity);
+  color[1] = (float)(layerColor.g * opacity);
+  color[2] = (float)(layerColor.b * opacity);
+  color[3] = (float)(opacity);
+
+  aManager->device()->SetPixelShaderConstantF(CBvColor, color, 1);
+
+  aManager->SetShaderMode(DeviceManagerD3D9::SOLIDCOLORLAYER,
+                          aLayer->GetMaskLayer());
+
+  aManager->device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
+}
+
+void
+ColorLayerD3D9::RenderLayer()
+{
+  return RenderColorLayerD3D9(this, mD3DManager);
+}
+
+} /* layers */
+} /* mozilla */