Translucent boxes apprears in VoxelPrimitive

I draw a VoxelPrimitive with dimensions(360,180,10)in the picture, I need to make some boxes transparent and keep some boxes colored. But as the picture showes, there appears some translucent boxes, my goal is to let these translucent boxes disappear and the colored boxes smooth.

Any idea? Thanks.

Hey @wangshamian, can you provide this in a Cesium Sandcastle (Sandcastle | CesiumJS) if you’re data can be shared? That will help me figure out what might be happening.

In the meantime, can I confirm the desired affect would essentially be removing the outline colour on your voxels? To me it looks like some of your voxels are transparent as desired, however maybe they aren’t 100% transparent and I just can’t tell from the screenshot.

Cheers!