void CL_Texture::copy_image_from( CL_GraphicContext & context, int level, CL_TextureFormat internal_format = cl_rgba ); void CL_Texture::copy_image_from( CL_GraphicContext & context, int x, int y, int width, int height, int level = 0, CL_TextureFormat internal_format = cl_rgba ); void CL_Texture::copy_image_from( CL_GraphicContext & context, const CL_Rect & pos, int level = 0, CL_TextureFormat internal_format = cl_rgba );