diff --git a/dlls/d3d10core/buffer.c b/dlls/d3d10core/buffer.c
index b9ac6e12509..c5d851e3f48 100644
--- a/dlls/d3d10core/buffer.c
+++ b/dlls/d3d10core/buffer.c
@@ -154,12 +154,11 @@ static HRESULT STDMETHODCALLTYPE d3d10_buffer_Map(ID3D10Buffer *iface, D3D10_MAP
 
     TRACE("iface %p, map_type %u, map_flags %#x, data %p.\n", iface, map_type, map_flags, data);
 
-    if (map_type != D3D10_MAP_READ_WRITE)
-        FIXME("Ignoring map_type %#x.\n", map_type);
     if (map_flags)
         FIXME("Ignoring map_flags %#x.\n", map_flags);
 
-    return wined3d_buffer_map(buffer->wined3d_buffer, 0, 0, (BYTE **)data, 0);
+    return wined3d_buffer_map(buffer->wined3d_buffer, 0, 0, (BYTE **)data,
+            wined3d_map_flags_from_d3d10_map_type(map_type));
 }
 
 static void STDMETHODCALLTYPE d3d10_buffer_Unmap(ID3D10Buffer *iface)
diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index 71c4dc07904..30ae928d534 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -63,6 +63,7 @@ DXGI_FORMAT dxgi_format_from_wined3dformat(enum wined3d_format_id format) DECLSP
 enum wined3d_format_id wined3dformat_from_dxgi_format(DXGI_FORMAT format) DECLSPEC_HIDDEN;
 DWORD wined3d_usage_from_d3d10core(UINT bind_flags, enum D3D10_USAGE usage) DECLSPEC_HIDDEN;
 struct wined3d_resource *wined3d_resource_from_resource(ID3D10Resource *resource) DECLSPEC_HIDDEN;
+DWORD wined3d_map_flags_from_d3d10_map_type(D3D10_MAP map_type) DECLSPEC_HIDDEN;
 
 static inline void read_dword(const char **ptr, DWORD *d)
 {
diff --git a/dlls/d3d10core/texture.c b/dlls/d3d10core/texture.c
index b488f910a18..5e112ddc2e9 100644
--- a/dlls/d3d10core/texture.c
+++ b/dlls/d3d10core/texture.c
@@ -176,15 +176,13 @@ static HRESULT STDMETHODCALLTYPE d3d10_texture2d_Map(ID3D10Texture2D *iface, UIN
     TRACE("iface %p, sub_resource_idx %u, map_type %u, map_flags %#x, mapped_texture %p.\n",
             iface, sub_resource_idx, map_type, map_flags, mapped_texture);
 
-    if (map_type != D3D10_MAP_READ_WRITE)
-        FIXME("Ignoring map_type %#x.\n", map_type);
     if (map_flags)
         FIXME("Ignoring map_flags %#x.\n", map_flags);
 
     if (!(sub_resource = wined3d_texture_get_sub_resource(texture->wined3d_texture, sub_resource_idx)))
         hr = E_INVALIDARG;
     else if (SUCCEEDED(hr = wined3d_surface_map(wined3d_surface_from_resource(sub_resource),
-            &wined3d_map_desc, NULL, 0)))
+            &wined3d_map_desc, NULL, wined3d_map_flags_from_d3d10_map_type(map_type))))
     {
         mapped_texture->pData = wined3d_map_desc.data;
         mapped_texture->RowPitch = wined3d_map_desc.row_pitch;
@@ -451,15 +449,13 @@ static HRESULT STDMETHODCALLTYPE d3d10_texture3d_Map(ID3D10Texture3D *iface, UIN
     TRACE("iface %p, sub_resource_idx %u, map_type %u, map_flags %#x, mapped_texture %p.\n",
             iface, sub_resource_idx, map_type, map_flags, mapped_texture);
 
-    if (map_type != D3D10_MAP_READ_WRITE)
-        FIXME("Ignoring map_type %#x.\n", map_type);
     if (map_flags)
         FIXME("Ignoring map_flags %#x.\n", map_flags);
 
     if (!(sub_resource = wined3d_texture_get_sub_resource(texture->wined3d_texture, sub_resource_idx)))
         hr = E_INVALIDARG;
     else if (SUCCEEDED(hr = wined3d_volume_map(wined3d_volume_from_resource(sub_resource),
-            &wined3d_map_desc, NULL, 0)))
+            &wined3d_map_desc, NULL, wined3d_map_flags_from_d3d10_map_type(map_type))))
     {
         mapped_texture->pData = wined3d_map_desc.data;
         mapped_texture->RowPitch = wined3d_map_desc.row_pitch;
diff --git a/dlls/d3d10core/utils.c b/dlls/d3d10core/utils.c
index d955fbbeaec..91eda6d007a 100644
--- a/dlls/d3d10core/utils.c
+++ b/dlls/d3d10core/utils.c
@@ -389,6 +389,28 @@ struct wined3d_resource *wined3d_resource_from_resource(ID3D10Resource *resource
     }
 }
 
+DWORD wined3d_map_flags_from_d3d10_map_type(D3D10_MAP map_type)
+{
+    switch (map_type)
+    {
+        case D3D10_MAP_READ_WRITE:
+            return 0;
+
+        case D3D10_MAP_READ:
+            return WINED3D_MAP_READONLY;
+
+        case D3D10_MAP_WRITE_DISCARD:
+            return WINED3D_MAP_DISCARD;
+
+        case D3D10_MAP_WRITE_NO_OVERWRITE:
+            return WINED3D_MAP_NOOVERWRITE;
+
+        default:
+            FIXME("Unhandled map_type %#x.\n", map_type);
+            return 0;
+    }
+}
+
 void skip_dword_unknown(const char **ptr, unsigned int count)
 {
     unsigned int i;