White Numberboards

Discussion of rolling-stock creation & re-painting.

White Numberboards

Unread postby harryadkins » Mon Apr 25, 2011 11:24 am

I'm doing several RJ Corman repaints to use on the Ohio Steel route. Everything looks great with the GP38 except the numberboards. I tried to repaint them white with black letters, but it didn't work. They turned out black with white letters. How do I delete the alpha channel so I can make the numberboards look right?
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Re: White Numberboards

Unread postby MadMike1024 » Mon Apr 25, 2011 11:45 am

harryadkins wrote:I'm doing several RJ Corman repaints to use on the Ohio Steel route. Everything looks great with the GP38 except the numberboards. I tried to repaint them white with black letters, but it didn't work. They turned out black with white letters. How do I delete the alpha channel so I can make the numberboards look right?


Take a look at the 'numboard.TgPcDx' file. It is the lens for the numberboard, and the geo draws on it by cancelling the alpha channel. change it to a solid white, and you should get black numbers on white.
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Re: White Numberboards

Unread postby harryadkins » Mon Apr 25, 2011 12:46 pm

Thanks for your help Mike. I thought the alpha channel was reversed. A white alpha produces a black shape? When I open the 'numboard.TgPcDx' file with DXTBmp, main image is a smokey color with a black border and the alpha channel is solid white.
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Re: White Numberboards

Unread postby Kali » Mon Apr 25, 2011 3:47 pm

Depends on what the alpha channel does for a particular texture, but in general with number textures:

* White alpha = show whatever is in the RGB channel
* Black alpha = transparent area.

So if you have a black texture with a white shape in the alpha channel, you'll get a black shape on top of whatever is behind the texture.
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Re: White Numberboards

Unread postby Vermonter » Mon Aug 20, 2012 7:19 am

Hellow All,
Looking for a guiding hand myself
I'm trying to preform just opposite Black Numberboards w White Numbers for this project
Honestly would like to know how to preform both styles. please be gental & hopefully info in the simplest of terms
My personal stats: 80yrs young, suffered an TBI (Traumatic Brain Injury) several yrs ago, thus the thought box can be very trying at times
Many of the Railworks projects I'm forced to preform trial & error over & over til I hit a combo that works
I'm using latest version of gimp for most dds works. I'm using G-Trax GP40 as the base to work from
so far with the numberboards I just clicked inside the gasket area applied black which worked great (the default looks gray)
for the numbers which honestly not sure which are the numberboards & which are the cab sides
anyways with the numbers open the left I colored gold & right white the gold was thinking being cab sides.
the black in the jpg below is really a checkerboard within gimp, figure this as the transparent areas
anyways I've tried every combo I can think of with no luck everything's black once placed back in the sim
This model eng also has files named primary numbers which may indeed be the cab sides..which those too I have been unable to color gold instead of
the default look of gray/silver. I shall continue eventually may hit upon the correct sequence.
Thus far this has been my most trying issue during my repainting process
Sending snapshots wich may help visually rather than my being an old winds bag..enjoy!..
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