Hello, all!
The first time NewTopic :oops:
Test "TV3D6.2\VB\Tutorials\A16" .
Insert code "SetLicenseKey TV_XXX, " XXX", " XXX".
Then alpha layer change in "CreateBillboard" Tree .

Use "RenderAllMeshes False" can resolve this problem,This method will reduce FPS.
I need a Better solution, the thanks reply.