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Transparent texture/alpha channel problem

K

kimhumphreys

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37
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unitedkingdom
I am trying to apply a transparent texture to create a simple fence but not having much luck. I can compile the object file, create a library object and place it with the texture but the transparent parts show up black. I have tried using a texture from a commercial demo sim that I know has an alpha channel but I cannot make that work either.

I am running FSX and using FSDS V 3.5.1. I have read the read me fiel and followed the instructions.

These are the steps I take.

1. I create a texture bmp in paint show pro.

2. I create the model (a two sided polygon) in FSDS and texture it and select the alpha channel option in the Texture definition box which pops up when you first add a teture to the list.

3. I compile the model, create a library bgl and place it in the appropriate folder.

4. I then use DXTBmp, load the texture, select create alpha template and then save the texture as a DXT3 file. I know that the alpha channle exists because the DXTBmp has an alpha channel preview window and the back parts of the texture show up.

I attach the mdl file as well as the texture. If anyone has any ideas I would be very grateful.
 

Attachments

Hello
Transparency behaviour seems rather odd!
Same config (FSX + FSDS 3.51).
I tried DXT1 (with alpha) save format in DXTBMP with Gimp Editor to draw letters for airport names; I have several files; some work, other don't!!! (it remains a black background). Most of existing texture files work after reworking them in DXTBMP, re-creating alpha (black), and saving.

Pierrot - FMEP
 
transparency

I have also been having trouble but after a certain amount of experimenting the problem appears to lie with ver 3.5. Using MW Graphics DTXBmp I converted a texture to a transparency, saved as extended bitmap, then created the same model using the same texture tile in both vers-3 and 3.5. The model 3 had a perfect transparency the model 3.5 had no transparency. I will contact Abacus and c what they have to say. Hope this has helped. NeilB
 
Make sure the texture falls in the right "size" category, I've been fooled a few times by not making sure it is the exact size. Has to be 64 x 64, 128 x 128, 256 x 256, 512 x 512, or 1024 x 1024. Just one pixel size off, and no go.
 
The material of the transparent part must be called "trans"

However, I get problems with Z-bias? Objects behind appearing in front and sometimes autogen or placed objects not appearing at all behind my transparent scenery.
 
Transparent Textures

I am making apron lighting for my McChord Scenery and I need to know how to make the day time texture (transparent) so that it doesnt show up when I am flying at day time, currently its shows up as black even though the texture is saved as transparent. The night tie texture is OK but far to bright but I should be able to alter that
Thanks
chazzer:):):)
 
Hello
I tested many solutions concerning transparency in FSX (using existing libraries and textures), but with various or unpredictable results.

So far, the only method that works surely is to respect "Tips" in FSDS help:
For FSX, you must have a material named prop, glass, window or trans assigned to the part AND an alpha channel on the texture in order for it to appear transparent.
Click to expand...

Personnaly , I failed for weeks to display names on roof of terminals; rebuild with same textures, simply renamed with trans... worked!

So, as original textures don't have such names, it needs to rebuild objects (fences, ...).

Other problem, if object is in first plan, transparency allows to display back landscape, but back objects often don't (particularly MT trees, decorative shrubs).

Pierrot - FMEP
 
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