diff -r 000000000000 -r 6474c204b198 gfx/angle/src/libGLESv2/renderer/VertexDeclarationCache.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/libGLESv2/renderer/VertexDeclarationCache.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+//
+// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// VertexDeclarationCache.h: Defines a helper class to construct and cache vertex declarations.
+
+#ifndef LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_
+#define LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_
+
+#include "libGLESv2/renderer/VertexDataManager.h"
+
+namespace gl
+{
+class VertexDataManager;
+}
+
+namespace rx
+{
+
+class VertexDeclarationCache
+{
+  public:
+    VertexDeclarationCache();
+    ~VertexDeclarationCache();
+
+    GLenum applyDeclaration(IDirect3DDevice9 *device, TranslatedAttribute attributes[], gl::ProgramBinary *programBinary, GLsizei instances, GLsizei *repeatDraw);
+
+    void markStateDirty();
+
+  private:
+    UINT mMaxLru;
+
+    enum { NUM_VERTEX_DECL_CACHE_ENTRIES = 32 };
+
+    struct VBData
+    {
+        unsigned int serial;
+        unsigned int stride;
+        unsigned int offset;
+    };
+
+    VBData mAppliedVBs[gl::MAX_VERTEX_ATTRIBS];
+    IDirect3DVertexDeclaration9 *mLastSetVDecl;
+    bool mInstancingEnabled;
+
+    struct VertexDeclCacheEntry
+    {
+        D3DVERTEXELEMENT9 cachedElements[gl::MAX_VERTEX_ATTRIBS + 1];
+        UINT lruCount;
+        IDirect3DVertexDeclaration9 *vertexDeclaration;
+    } mVertexDeclCache[NUM_VERTEX_DECL_CACHE_ENTRIES];
+};
+
+}
+
+#endif // LIBGLESV2_RENDERER_VERTEXDECLARATIONCACHE_H_