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Transparent texture problem

R

rigpig

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30
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unitedkingdom
Hi folks,

Been working away at a couple of soccer stadia up in Liverpool UK using GMax and hit upon a problem with semi-transparent textures. I need the end screens for two of the stands to be a brownish opaque colour and have attempted to achieve this by using a DXT3 bitmap. The result is shown in the attachment; some of the interior of the stadium shows through the end panels, other parts are missing - there should be another stand at the far end of the ground but all you can see is the default scnery behind:confused:
OK, I realise this has come up before and understand it is something to do with the way the objects are drawn, what I don't undertsand is how to fix it. These two panels have to be drawn last, is that right? Or is it something to do with the way the panels are drawn, inside first then outside? Can any fix be achieved within GMax alone, i.e. will simply deleting the two panels and then rebuilding them as the last polygons in the model work, or is that just plain wrong?

Thanks a lot,

Jeff
 

Attachments

  • Goodison.jpg
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Use DTX1 instead of DTX3

Johan

rigpig said:
Hi folks,

Been working away at a couple of soccer stadia up in Liverpool UK using GMax and hit upon a problem with semi-transparent textures. I need the end screens for two of the stands to be a brownish opaque colour and have attempted to achieve this by using a DXT3 bitmap. The result is shown in the attachment; some of the interior of the stadium shows through the end panels, other parts are missing - there should be another stand at the far end of the ground but all you can see is the default scnery behind:confused:
OK, I realise this has come up before and understand it is something to do with the way the objects are drawn, what I don't undertsand is how to fix it. These two panels have to be drawn last, is that right? Or is it something to do with the way the panels are drawn, inside first then outside? Can any fix be achieved within GMax alone, i.e. will simply deleting the two panels and then rebuilding them as the last polygons in the model work, or is that just plain wrong?

Thanks a lot,

Jeff
Click to expand...
 
Thanks for the reply Flyer.
Perhaps I've misunderstood something, but I thought DTX1 could only show transparent/not transparent as opposed to degrees of opacity which is what I need.

Jeff
 
Hi Jeff,

You're right about the difference between DTX1 and DTX3. Your problem to me certainly looks like a problem of drawing order. The "inside" must be drawn first. At one time I thought that it was enough to change the order of the different parts as you see it in File/Summary Info. And that can be changed "easily": you clone the part(s) that you want to move down the list, delete the original and name it back to the original name.

However, I am now convinced (as Dick "Rhumbaflappy" and others have said) that the name of the material matters. By material I mean what is called material in the 0_asm-file, that is the both the gmax materials and the textures you use. If you study the 0_asm-file, you will se that the different parts are drawn in the alphabetical order of the material used.

So try renaming the textures for the "inside" parts, like something starting with an "a" or a number, and the textures for the outside parts to something that starts with a letter further down the alphabet.

Peter
 
Hi Peter,

After messing with the .cfg file for the MakeMDL prog I managed to get it to keep the _0.asm file rather than deleting it.
Now, if I manage to change the order the components appear in this file, what do I do with it then, i.e. which program uses the _0.asm file? I need to create a .MDL file so I can place the model with another program, FSArchitect in fact. Is it BGLC?
Sheesh this is bloomin' complicated :)
 
Aha!

Thanks Peter, it worked a treat as you described.

Jeff
 

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