fix GPU rendering to support Emissive alpha mask

[andybot_cg]

Unless I'm setting up something wrong, it seems alpha mask is not supported in GPU for Emissive materials. (first image CPU rendering, 2nd image GPU)

[Peter.Chaushev]

Hello, and thank you for posting this. You are correct, this is a core limitation.
Cannot give any ETA on its solution at the moment, probably the next major release.

Kind regards,
Peter

[Szakul]

Hello, and thank you for posting this. You are correct, this is a core limitation.
Cannot give any ETA on its solution at the moment, probably the next major release.

Kind regards,
Peter

Is this fixed in V-Ray Next for Sketchup?

[Peter.Chaushev]

Is this fixed in V-Ray Next for Sketchup?

Yes, it is. Works well with PNGs. You can try the following:
1. Slot a PNG image file with alpha channel in the Emissive material's Color map slot.
2. Copy the map and paste it as instance in the Transparency slot, then right-click on it and choose Wrap In > Color Correction.
3. Rewire the Bitmap texture's channels to receive the desired transparency mask:



Kind regards,
Peter