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Libraries & objects
About Archicad and BIMcloud libraries, their management and migration, objects and other library parts, etc.

Alpha Channels

derekjackson
Advocate
Hi,
I'm having trouble gettting an alpha channel to show up. I sit possible for a PICTURE to use its alpha in both the internal engine and openGL, and also Lightworks?

I'm currently using
PICTURE 'FE_sign_border_a.tif', 0.6, 0.15, 1+0
which does the job fine for Lightworks, but doesn't show up in the working 3D views.

I've managed to make materials in the Materials Settings window that include alpha channels that work in the Internal Engine (but not OpenGL) - how would I do this in GDL?

Any help appreciated!

Thanks,

Derek
1 REPLY 1
ztaskai
Graphisoft Alumni
Graphisoft Alumni
Unfortunately, the OpenGL implementation of ArchiCAD doesn't include a full alpha channel support. So you can only aim for rendering. Your script line is basically OK. You can find more examples in bitmap trees and bitmap people in the ArchiCAD Library.

Regards,
Zsolt Táskai
ArchiCAD Development - GDL Team
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