diff --git a/dlls/d3dx9_24/d3dx9_24.spec b/dlls/d3dx9_24/d3dx9_24.spec
index a59311e8fc3..0e9068c8424 100644
--- a/dlls/d3dx9_24/d3dx9_24.spec
+++ b/dlls/d3dx9_24/d3dx9_24.spec
@@ -72,7 +72,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_25/d3dx9_25.spec b/dlls/d3dx9_25/d3dx9_25.spec
index bd1ab6ac954..0111580176f 100644
--- a/dlls/d3dx9_25/d3dx9_25.spec
+++ b/dlls/d3dx9_25/d3dx9_25.spec
@@ -72,7 +72,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_26/d3dx9_26.spec b/dlls/d3dx9_26/d3dx9_26.spec
index 6ea2cea0b94..b41f0c4cdc4 100644
--- a/dlls/d3dx9_26/d3dx9_26.spec
+++ b/dlls/d3dx9_26/d3dx9_26.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_27/d3dx9_27.spec b/dlls/d3dx9_27/d3dx9_27.spec
index 6ea2cea0b94..b41f0c4cdc4 100644
--- a/dlls/d3dx9_27/d3dx9_27.spec
+++ b/dlls/d3dx9_27/d3dx9_27.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_28/d3dx9_28.spec b/dlls/d3dx9_28/d3dx9_28.spec
index 2b80322137b..e24b04a8622 100644
--- a/dlls/d3dx9_28/d3dx9_28.spec
+++ b/dlls/d3dx9_28/d3dx9_28.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_29/d3dx9_29.spec b/dlls/d3dx9_29/d3dx9_29.spec
index 2b80322137b..e24b04a8622 100644
--- a/dlls/d3dx9_29/d3dx9_29.spec
+++ b/dlls/d3dx9_29/d3dx9_29.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_30/d3dx9_30.spec b/dlls/d3dx9_30/d3dx9_30.spec
index 54234b24149..61ddf298b40 100644
--- a/dlls/d3dx9_30/d3dx9_30.spec
+++ b/dlls/d3dx9_30/d3dx9_30.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_31/d3dx9_31.spec b/dlls/d3dx9_31/d3dx9_31.spec
index 1e670284320..5ddacc7977d 100644
--- a/dlls/d3dx9_31/d3dx9_31.spec
+++ b/dlls/d3dx9_31/d3dx9_31.spec
@@ -75,7 +75,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_32/d3dx9_32.spec b/dlls/d3dx9_32/d3dx9_32.spec
index 8a224467b32..7415ad6ff37 100644
--- a/dlls/d3dx9_32/d3dx9_32.spec
+++ b/dlls/d3dx9_32/d3dx9_32.spec
@@ -75,7 +75,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_33/d3dx9_33.spec b/dlls/d3dx9_33/d3dx9_33.spec
index 8a224467b32..7415ad6ff37 100644
--- a/dlls/d3dx9_33/d3dx9_33.spec
+++ b/dlls/d3dx9_33/d3dx9_33.spec
@@ -75,7 +75,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_34/d3dx9_34.spec b/dlls/d3dx9_34/d3dx9_34.spec
index 8a224467b32..7415ad6ff37 100644
--- a/dlls/d3dx9_34/d3dx9_34.spec
+++ b/dlls/d3dx9_34/d3dx9_34.spec
@@ -75,7 +75,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_35/d3dx9_35.spec b/dlls/d3dx9_35/d3dx9_35.spec
index 8a224467b32..7415ad6ff37 100644
--- a/dlls/d3dx9_35/d3dx9_35.spec
+++ b/dlls/d3dx9_35/d3dx9_35.spec
@@ -75,7 +75,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_36/d3dx9_36.spec b/dlls/d3dx9_36/d3dx9_36.spec
index 4c72dc2b137..13f0d99837a 100644
--- a/dlls/d3dx9_36/d3dx9_36.spec
+++ b/dlls/d3dx9_36/d3dx9_36.spec
@@ -76,7 +76,7 @@
 @ stub D3DXCreateNPatchMesh(ptr ptr)
 @ stub D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr)
 @ stub D3DXCreatePatchMesh(ptr long long long ptr ptr ptr)
-@ stub D3DXCreatePolygon(ptr long long ptr ptr)
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr)
 @ stub D3DXCreatePRTBuffer(long long long ptr)
 @ stub D3DXCreatePRTBufferTex(long long long long ptr)
 @ stub D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr)
diff --git a/dlls/d3dx9_36/mesh.c b/dlls/d3dx9_36/mesh.c
index aecb45de459..9aece61629c 100644
--- a/dlls/d3dx9_36/mesh.c
+++ b/dlls/d3dx9_36/mesh.c
@@ -4555,6 +4555,94 @@ struct vertex
     D3DXVECTOR3 normal;
 };
 
+HRESULT WINAPI D3DXCreatePolygon(struct IDirect3DDevice9 *device, float length, UINT sides,
+        struct ID3DXMesh **mesh, struct ID3DXBuffer **adjacency)
+{
+    HRESULT hr;
+    ID3DXMesh *polygon;
+    struct vertex *vertices;
+    WORD (*faces)[3];
+    DWORD (*adjacency_buf)[3];
+    float scale;
+    unsigned int i;
+
+    TRACE("device %p, length %f, sides %u, mesh %p, adjacency %p.\n",
+            device, length, sides, mesh, adjacency);
+
+    if (!device || length < 0.0f || sides < 3 || !mesh)
+        return D3DERR_INVALIDCALL;
+
+    if (FAILED(hr = D3DXCreateMeshFVF(sides, sides + 1, D3DXMESH_MANAGED,
+            D3DFVF_XYZ | D3DFVF_NORMAL, device, &polygon)))
+    {
+        return hr;
+    }
+
+    if (FAILED(hr = polygon->lpVtbl->LockVertexBuffer(polygon, 0, (void **)&vertices)))
+    {
+        polygon->lpVtbl->Release(polygon);
+        return hr;
+    }
+
+    if (FAILED(hr = polygon->lpVtbl->LockIndexBuffer(polygon, 0, (void **)&faces)))
+    {
+        polygon->lpVtbl->UnlockVertexBuffer(polygon);
+        polygon->lpVtbl->Release(polygon);
+        return hr;
+    }
+
+    scale = 0.5f * length / sinf(D3DX_PI / sides);
+
+    vertices[0].position.x = 0.0f;
+    vertices[0].position.y = 0.0f;
+    vertices[0].position.z = 0.0f;
+    vertices[0].normal.x = 0.0f;
+    vertices[0].normal.y = 0.0f;
+    vertices[0].normal.z = 1.0f;
+
+    for (i = 0; i < sides; ++i)
+    {
+        vertices[i + 1].position.x = cosf(2.0f * D3DX_PI * i / sides) * scale;
+        vertices[i + 1].position.y = sinf(2.0f * D3DX_PI * i / sides) * scale;
+        vertices[i + 1].position.z = 0.0f;
+        vertices[i + 1].normal.x = 0.0f;
+        vertices[i + 1].normal.y = 0.0f;
+        vertices[i + 1].normal.z = 1.0f;
+
+        faces[i][0] = 0;
+        faces[i][1] = i + 1;
+        faces[i][2] = i + 2;
+    }
+
+    faces[sides - 1][2] = 1;
+
+    polygon->lpVtbl->UnlockVertexBuffer(polygon);
+    polygon->lpVtbl->UnlockIndexBuffer(polygon);
+
+    if (adjacency)
+    {
+        if (FAILED(hr = D3DXCreateBuffer(sides * sizeof(DWORD) * 3, adjacency)))
+        {
+            polygon->lpVtbl->Release(polygon);
+            return hr;
+        }
+
+        adjacency_buf = ID3DXBuffer_GetBufferPointer(*adjacency);
+        for (i = 0; i < sides; ++i)
+        {
+            adjacency_buf[i][0] = i - 1;
+            adjacency_buf[i][1] = ~0U;
+            adjacency_buf[i][2] = i + 1;
+        }
+        adjacency_buf[0][0] = sides - 1;
+        adjacency_buf[sides - 1][2] = 0;
+    }
+
+    *mesh = polygon;
+
+    return D3D_OK;
+}
+
 HRESULT WINAPI D3DXCreateBox(struct IDirect3DDevice9 *device, float width, float height,
         float depth, struct ID3DXMesh **mesh, struct ID3DXBuffer **adjacency)
 {
diff --git a/dlls/d3dx9_37/d3dx9_37.spec b/dlls/d3dx9_37/d3dx9_37.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_37/d3dx9_37.spec
+++ b/dlls/d3dx9_37/d3dx9_37.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_38/d3dx9_38.spec b/dlls/d3dx9_38/d3dx9_38.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_38/d3dx9_38.spec
+++ b/dlls/d3dx9_38/d3dx9_38.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_39/d3dx9_39.spec b/dlls/d3dx9_39/d3dx9_39.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_39/d3dx9_39.spec
+++ b/dlls/d3dx9_39/d3dx9_39.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_40/d3dx9_40.spec b/dlls/d3dx9_40/d3dx9_40.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_40/d3dx9_40.spec
+++ b/dlls/d3dx9_40/d3dx9_40.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_41/d3dx9_41.spec b/dlls/d3dx9_41/d3dx9_41.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_41/d3dx9_41.spec
+++ b/dlls/d3dx9_41/d3dx9_41.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_42/d3dx9_42.spec b/dlls/d3dx9_42/d3dx9_42.spec
index 777c03529fa..cc5d8fe58cf 100644
--- a/dlls/d3dx9_42/d3dx9_42.spec
+++ b/dlls/d3dx9_42/d3dx9_42.spec
@@ -76,7 +76,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/dlls/d3dx9_43/d3dx9_43.spec b/dlls/d3dx9_43/d3dx9_43.spec
index d97b81f0b25..0cb9e315c43 100644
--- a/dlls/d3dx9_43/d3dx9_43.spec
+++ b/dlls/d3dx9_43/d3dx9_43.spec
@@ -74,7 +74,7 @@
 @ stdcall D3DXCreateNPatchMesh(ptr ptr) d3dx9_36.D3DXCreateNPatchMesh
 @ stdcall D3DXCreatePMeshFromStream(ptr long ptr ptr ptr ptr ptr) d3dx9_36.D3DXCreatePMeshFromStream
 @ stdcall D3DXCreatePatchMesh(ptr long long long ptr ptr ptr) d3dx9_36.D3DXCreatePatchMesh
-@ stdcall D3DXCreatePolygon(ptr long long ptr ptr) d3dx9_36.D3DXCreatePolygon
+@ stdcall D3DXCreatePolygon(ptr float long ptr ptr) d3dx9_36.D3DXCreatePolygon
 @ stdcall D3DXCreatePRTBuffer(long long long ptr) d3dx9_36.D3DXCreatePRTBuffer
 @ stdcall D3DXCreatePRTBufferTex(long long long long ptr) d3dx9_36.D3DXCreatePRTBufferTex
 @ stdcall D3DXCreatePRTCompBuffer(long long long ptr ptr ptr ptr) d3dx9_36.D3DXCreatePRTCompBuffer
diff --git a/include/d3dx9shape.h b/include/d3dx9shape.h
index 0d24032b16c..af49bb48a4d 100644
--- a/include/d3dx9shape.h
+++ b/include/d3dx9shape.h
@@ -29,6 +29,8 @@ HRESULT WINAPI D3DXCreateBox(struct IDirect3DDevice9 *device, float width, float
         float depth, struct ID3DXMesh **mesh, struct ID3DXBuffer **adjacency);
 HRESULT WINAPI D3DXCreateCylinder(struct IDirect3DDevice9 *device, float radius1, float radius2,
         float length, UINT slices, UINT stacks, struct ID3DXMesh **mesh, struct ID3DXBuffer **adjacency);
+HRESULT WINAPI D3DXCreatePolygon(struct IDirect3DDevice9 *device, float length, UINT sides, struct ID3DXMesh **mesh,
+        ID3DXBuffer **adjacency);
 HRESULT WINAPI D3DXCreateSphere(struct IDirect3DDevice9 *device, float radius, UINT slices,
         UINT stacks, struct ID3DXMesh **mesh, struct ID3DXBuffer **adjacency);
 HRESULT WINAPI D3DXCreateTeapot(struct IDirect3DDevice9 *device,