flutter ShaderMask

ShaderMask(
                    shaderCallback: (Rect bounds) {
                      return RadialGradient(
                        center: Alignment.topLeft,
                        radius: 1.0,
                        colors: <Color>[
                          Colors.yellow,
                          Colors.deepOrange.shade900
                        ],
                        tileMode: TileMode.mirror,
                      ).createShader(bounds);
                    },
                    child: const Text(
                      'ShaderMask',
                      style: TextStyle(fontSize: 30, color: Colors.white),
                    ),
                  )