http://bugs.winehq.org/show_bug.cgi?id=10435
--- Comment #4 from Vitaliy Margolen vitaliy@kievinfo.com 2007-12-08 16:23:05 --- Might have something to do with these messages: warn:d3d:IWineD3DDeviceImpl_SetRenderTarget (0x15f088) : Unsupported target 1 set, returning WINED3DERR_INVALIDCALL(only 1 supported) warn:d3d:IWineD3DDeviceImpl_SetRenderTarget (0x15f088) : Unsupported target 2 set, returning WINED3DERR_INVALIDCALL(only 1 supported) warn:d3d:IWineD3DDeviceImpl_SetRenderTarget (0x15f088) : Unsupported target 3 set, returning WINED3DERR_INVALIDCALL(only 1 supported) warn:d3d_shader:IWineD3DVertexShaderImpl_CompileShader Swizzled attribute validation required an expensive comparison err:d3d_surface:fb_copy_to_texture_direct Texture filtering not supported in direct blit
If it draws the portal onto a texture then blits it.