Attribute used to configure the usage of the GradientField and Gradient Editor for a gradient.
Use this attribute on a Gradient to configure the GradientField and Gradient Editor to treat the colors as HDR colors or as normal LDR colors.
| hdr | If set to true the Gradient uses HDR colors. |
| GradientUsageAttribute | Attribute for Gradient fields. Used for configuring the GUI for the Gradient Editor. |
| order | 可选字段，用于指定多个 DecorationDrawer 应采用的绘制顺序。 |