POV-Ray : Newsgroups : povray.bugreports : TGA Alpha channel : TGA Alpha channel Server Time
30 Sep 2023 21:36:52 EDT (-0400)
  TGA Alpha channel  
From: Ton
Date: 5 Feb 2021 19:45:00
Message: <web.601de5a761b9256174b337b70@news.povray.org>
I'm playing with Gilles Tran MakeCloud macro, and the output from tga2df3 didn't
look like a cloud.
After some investigation I found that the TGA output file is confused.
When I use -UA, povray says: makecloud2001.tga, 24 bpp Targa, but the output
file contains an alpha channel (every fourth byte is 0xFF).
When I use +UA, povray says: makecloud2001.tga, 32 bpp with alpha Targa, but
this time I don't have the alpha channel, and tga2df3 generates a cloud.

My povray version is POV-Ray 3.8.0-x.10064738.unofficial, and UberPOV
has the same problem.

I couldn't find any mention of this in the newsgroups, but if people are aware
then I apologize for rubbing it in again.


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