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Beginner's Question (Read 424 times)

Dec 8^th, 2008 at 2:24am

Goofyfish Offline
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Hello, gang. I am interested in trying my hand at repaints, and have read quite a bit here (that is well over my head for now) but I have a basic question. I am doing a bit of exploration by deconstructing existing repaints using DXTBMP and Photo Pos Pro. Using DXTBMP I wave the file as a 24 bit BMP then export the alpha.

I can modify the alpha and import back with no issues, but if I modify the the basic BMP file the trouble begins. Once I make a change and import the alpha, when I select "save" it defaults to DTX1 (No Alpha) and the channel is not saved with the file. Even if I select a different DTX, the result is the same: an image with no alpha channel data.

Any thoughts?

Let's get one thing straight. There's a big difference between a pilot and &&an aviator. One is a technician; the other is an artist in love with flight. &&&&— E. B. Jeppesen

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Reply #1 - Dec 8^th, 2008 at 1:41pm

jankees Offline
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DTX1 does not support an alphachannel, but DTX3 does, so saving it as an DTX3, or as I do, an extended 32 bit BMP, will give you an alpha channel.
Use save as>extended bitmap> select whatever it is you want.

Hope this helps,
JanKees

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Reply #2 - Dec 8^th, 2008 at 8:56pm

Goofyfish Offline
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Life is good. Thanks for the reply!

Rick

Let's get one thing straight. There's a big difference between a pilot and &&an aviator. One is a technician; the other is an artist in love with flight. &&&&— E. B. Jeppesen

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Reply #3 - Dec 9^th, 2008 at 8:00am

garryrussell Offline
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If you add the alpha in DXTBMP there should be no problem as long as the saved choice supports it

Turning a file back from DXT3 to 24 then re compressing it to DXT3 is not a sound idea as the quality will suffer

As the turning back from DXT3 to 24 bit has already lost detail, it would be better to resave as Extended 32 888-8. and that will hold the quality as it is.

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Reply #4 - Dec 9^th, 2008 at 4:54pm

Goofyfish Offline
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Appreciate the tip... in actuality, I am struggling with "noise" pixels just in saving my work in .bmp format in the editing application. I'll keep the 888-8 format in mind when I get serious.

I smell a new hobby here...

Wink

Let's get one thing straight. There's a big difference between a pilot and &&an aviator. One is a technician; the other is an artist in love with flight. &&&&— E. B. Jeppesen

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