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Alpha channels with good looking textures

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Reading Topic #7187

Charter Member · 93 posts

LAST EDITED ON Sep-17-03 AT 08:39 AM (EDT)

Is there any way to get 24 bit colors work with alpha channels,
because textures with alpha channels look crappy.

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Member since Oct-8-02 · 443 posts

RE: Alpha channels with good looking textures.

Alpha channels with good looking textures – image 1

Targa Files that save alpha channels within are 32 bit images. 24 Bits is the actual visual image while the remaining 8 bit is the stored greyscale layer or alpha channel.

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Charter Member · 642 posts

RE: Alpha channels with good looking textures.

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because of the way MSTS compresses the textures with alpha channels to wedge them into the same memory space as those that don't. Your best bet is to add some noise to the image using a filter. This will break up the colors enough that they don't all get reduced to the same color when the sim loads them.

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Charter Member · 123 posts

RE: Alpha channels with good looking textures.

LAST EDITED ON Sep-17-03 AT 05:48 PM (EDT)

The approach I took with this F unit was in the modelling. All the "solid" polygons got their colour from an ace files without an alpha channel. The windows from one with the masking. It took some thought in the planning but the effects are reasonable. I know it is all red but it was the dust, rust and grime I wanted to look reasonable.:-}Dick C.

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Alpha channels with good looking textures – image 2
http://www.train-sim.com/dcforum/User_files/3f68d61c1eb6dc95.jpg

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Charter Member · 60 posts

RE: Alpha channels with good looking textures.

Dick,You actually use the same method I use on my models, I reserve the alpha channels for a seperate ace file which is usually 256x256 or smaller. This way I too know that everything is the shade I want.-=Andrew=-

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