diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index 3f782baf1dc..fade87946fb 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -155,6 +155,8 @@ struct d3d10_pixel_shader
 };
 
 HRESULT shader_extract_from_dxbc(const void *dxbc, SIZE_T dxbc_length, const DWORD **shader_code);
+HRESULT shader_parse_signature(const char *data, DWORD data_size, struct wined3d_shader_signature *s);
+void shader_free_signature(struct wined3d_shader_signature *s);
 
 /* Layered device */
 enum dxgi_device_layer_id
diff --git a/dlls/d3d10core/inputlayout.c b/dlls/d3d10core/inputlayout.c
index d78ecad7a91..f6f50bc26a9 100644
--- a/dlls/d3d10core/inputlayout.c
+++ b/dlls/d3d10core/inputlayout.c
@@ -24,74 +24,15 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(d3d10core);
 
-struct input_signature_element
-{
-    const char *semantic_name;
-    UINT semantic_idx;
-    DWORD unknown; /* system value semantic? */
-    DWORD component_type;
-    UINT register_idx;
-    DWORD mask;
-};
-
-struct input_signature
-{
-    struct input_signature_element *elements;
-    UINT element_count;
-};
-
-static HRESULT parse_isgn(const char *data, struct input_signature *is)
-{
-    struct input_signature_element *e;
-    const char *ptr = data;
-    unsigned int i;
-    DWORD count;
-
-    read_dword(&ptr, &count);
-    TRACE("%u elements\n", count);
-
-    skip_dword_unknown(&ptr, 1);
-
-    e = HeapAlloc(GetProcessHeap(), 0, count * sizeof(*e));
-    if (!e)
-    {
-        ERR("Failed to allocate input signature memory.\n");
-        return E_OUTOFMEMORY;
-    }
-
-    for (i = 0; i < count; ++i)
-    {
-        UINT name_offset;
-
-        read_dword(&ptr, &name_offset);
-        e[i].semantic_name = data + name_offset;
-        read_dword(&ptr, &e[i].semantic_idx);
-        read_dword(&ptr, &e[i].unknown);
-        read_dword(&ptr, &e[i].component_type);
-        read_dword(&ptr, &e[i].register_idx);
-        read_dword(&ptr, &e[i].mask);
-
-        TRACE("semantic: %s, semantic idx: %u, unknown %#x, type %u, register idx: %u, use_mask %#x, input_mask %#x\n",
-                e[i].semantic_name, e[i].semantic_idx, e[i].unknown, e[i].component_type,
-                e[i].register_idx, (e[i].mask >> 8) & 0xff, e[i].mask & 0xff);
-    }
-
-    is->elements = e;
-    is->element_count = count;
-
-    return S_OK;
-}
-
 static HRESULT isgn_handler(const char *data, DWORD data_size, DWORD tag, void *ctx)
 {
-    struct input_signature *is = ctx;
-    const char *ptr = data;
+    struct wined3d_shader_signature *is = ctx;
     char tag_str[5];
 
     switch(tag)
     {
         case TAG_ISGN:
-            return parse_isgn(ptr, is);
+            return shader_parse_signature(data, data_size, is);
 
         default:
             memcpy(tag_str, &tag, 4);
@@ -105,7 +46,7 @@ HRESULT d3d10_input_layout_to_wined3d_declaration(const D3D10_INPUT_ELEMENT_DESC
         UINT element_count, const void *shader_byte_code, SIZE_T shader_byte_code_length,
         WINED3DVERTEXELEMENT **wined3d_elements, UINT *wined3d_element_count)
 {
-    struct input_signature is;
+    struct wined3d_shader_signature is;
     HRESULT hr;
     UINT i;
 
@@ -157,7 +98,7 @@ HRESULT d3d10_input_layout_to_wined3d_declaration(const D3D10_INPUT_ELEMENT_DESC
         }
     }
 
-    HeapFree(GetProcessHeap(), 0, is.elements);
+    shader_free_signature(&is);
 
     return S_OK;
 }
diff --git a/dlls/d3d10core/shader.c b/dlls/d3d10core/shader.c
index 8b3d01e442c..42af6d0b12f 100644
--- a/dlls/d3d10core/shader.c
+++ b/dlls/d3d10core/shader.c
@@ -55,6 +55,71 @@ HRESULT shader_extract_from_dxbc(const void *dxbc, SIZE_T dxbc_length, const DWO
     return hr;
 }
 
+HRESULT shader_parse_signature(const char *data, DWORD data_size, struct wined3d_shader_signature *s)
+{
+    struct wined3d_shader_signature_element *e;
+    unsigned int string_data_offset;
+    unsigned int string_data_size;
+    const char *ptr = data;
+    char *string_data;
+    unsigned int i;
+    DWORD count;
+
+    read_dword(&ptr, &count);
+    TRACE("%u elements\n", count);
+
+    skip_dword_unknown(&ptr, 1);
+
+    e = HeapAlloc(GetProcessHeap(), 0, count * sizeof(*e));
+    if (!e)
+    {
+        ERR("Failed to allocate input signature memory.\n");
+        return E_OUTOFMEMORY;
+    }
+
+    /* 2 DWORDs for the header, 6 for each element. */
+    string_data_offset = 2 * sizeof(DWORD) + count * 6 * sizeof(DWORD);
+    string_data_size = data_size - string_data_offset;
+    string_data = HeapAlloc(GetProcessHeap(), 0, string_data_size);
+    if (!string_data)
+    {
+        ERR("Failed to allocate string data memory.\n");
+        HeapFree(GetProcessHeap(), 0, e);
+        return E_OUTOFMEMORY;
+    }
+    memcpy(string_data, data + string_data_offset, string_data_size);
+
+    for (i = 0; i < count; ++i)
+    {
+        UINT name_offset;
+
+        read_dword(&ptr, &name_offset);
+        e[i].semantic_name = string_data + (name_offset - string_data_offset);
+        read_dword(&ptr, &e[i].semantic_idx);
+        read_dword(&ptr, &e[i].sysval_semantic);
+        read_dword(&ptr, &e[i].component_type);
+        read_dword(&ptr, &e[i].register_idx);
+        read_dword(&ptr, &e[i].mask);
+
+        TRACE("semantic: %s, semantic idx: %u, sysval_semantic %#x, "
+                "type %u, register idx: %u, use_mask %#x, input_mask %#x\n",
+                e[i].semantic_name, e[i].semantic_idx, e[i].sysval_semantic, e[i].component_type,
+                e[i].register_idx, (e[i].mask >> 8) & 0xff, e[i].mask & 0xff);
+    }
+
+    s->elements = e;
+    s->element_count = count;
+    s->string_data = string_data;
+
+    return S_OK;
+}
+
+void shader_free_signature(struct wined3d_shader_signature *s)
+{
+    HeapFree(GetProcessHeap(), 0, s->string_data);
+    HeapFree(GetProcessHeap(), 0, s->elements);
+}
+
 /* IUnknown methods */
 
 static HRESULT STDMETHODCALLTYPE d3d10_vertex_shader_QueryInterface(ID3D10VertexShader *iface,