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diff --git a/src/gallium/state_trackers/nine/vertexdeclaration9.h b/src/gallium/state_trackers/nine/vertexdeclaration9.h
new file mode 100644
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+++ b/src/gallium/state_trackers/nine/vertexdeclaration9.h
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+/*
+ * Copyright 2011 Joakim Sindholt <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#ifndef _NINE_VERTEXDECLARATION9_H_
+#define _NINE_VERTEXDECLARATION9_H_
+
+#include "nine_defines.h"
+#include "iunknown.h"
+
+struct pipe_resource;
+struct pipe_vertex_element;
+struct pipe_stream_output_info;
+struct NineDevice9;
+struct NineVertexBuffer9;
+
+struct NineVertexDeclaration9
+{
+    struct NineUnknown base;
+
+    /* G3D state */
+    struct pipe_vertex_element *elems;
+    unsigned nelems;
+
+    /* DECLUSAGE -> element index, for selecting the vertex element
+     * for each VS input */
+    uint8_t usage_map[NINE_DECLUSAGE_COUNT];
+
+    D3DVERTEXELEMENT9 *decls;
+    DWORD fvf;
+};
+static INLINE struct NineVertexDeclaration9 *
+NineVertexDeclaration9( void *data )
+{
+    return (struct NineVertexDeclaration9 *)data;
+}
+
+HRESULT
+NineVertexDeclaration9_new( struct NineDevice9 *pDevice,
+                            const D3DVERTEXELEMENT9 *pElements,
+                            struct NineVertexDeclaration9 **ppOut );
+
+HRESULT
+NineVertexDeclaration9_new_from_fvf( struct NineDevice9 *pDevice,
+                                     DWORD FVF,
+                                     struct NineVertexDeclaration9 **ppOut );
+
+HRESULT
+NineVertexDeclaration9_ctor( struct NineVertexDeclaration9 *This,
+                             struct NineUnknownParams *pParams,
+                             const D3DVERTEXELEMENT9 *pElements );
+
+void
+NineVertexDeclaration9_dtor( struct NineVertexDeclaration9 *This );
+
+HRESULT WINAPI
+NineVertexDeclaration9_GetDeclaration( struct NineVertexDeclaration9 *This,
+                                       D3DVERTEXELEMENT9 *pElement,
+                                       UINT *pNumElements );
+
+/* Convert stream output data to the vertex declaration's format. */
+HRESULT
+NineVertexDeclaration9_ConvertStreamOutput(
+    struct NineVertexDeclaration9 *This,
+    struct NineVertexBuffer9 *pDstBuf,
+    UINT DestIndex,
+    UINT VertexCount,
+    struct pipe_resource *pSrcBuf,
+    const struct pipe_stream_output_info *so );
+
+#endif /* _NINE_VERTEXDECLARATION9_H_ */