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diff --git a/libs/hwui/ShadowTessellator.h b/libs/hwui/ShadowTessellator.h
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+++ b/libs/hwui/ShadowTessellator.h
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+
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HWUI_SHADOW_TESSELLATOR_H
+#define ANDROID_HWUI_SHADOW_TESSELLATOR_H
+
+#include "Debug.h"
+#include "Matrix.h"
+
+namespace android {
+namespace uirenderer {
+
+class ShadowTessellator {
+public:
+    static void tessellateAmbientShadow(float width, float height,
+            const mat4& casterTransform, VertexBuffer& shadowVertexBuffer);
+
+    static void tessellateSpotShadow(float width, float height,
+            const mat4& receiverTransform, int screenWidth, int screenHeight,
+            const mat4& casterTransform, VertexBuffer& shadowVertexBuffer);
+
+private:
+    static void generateCasterPolygon(float width, float height,
+            const mat4& casterTransform, int vertexCount, Vector3* polygon);
+
+}; // ShadowTessellator
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_HWUI_SHADOW_TESSELLATOR_H