When exporting, check "Channels" in the options, and check the desired channels in the settings bar on the right side of the channel option for rendering, then the channels will be exported for post-processing while the picture is exported.

 Location of the channels

Currently, D5 Render supports exporting 5 kinds of channel maps.

- Material ID : Use different colors to distinguish between materials, so that a single material can be selected for adjustment afterwards.

- AmbientOcclusion : usually used to improve shadows

- RTReflection

- AlphaMask: used to distinguish between the model and the environment outside

- TransMask: separate channel for transparent materials