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View Full Version : transparency issues (vampire warrior content)


cyi
09-03-2006, 02:28 AM
Hey guys! I love browsing these forums but dont post much, but I'm trying to change that. This is my first attempt at a true game spec model. I just started painting the texture and it's got a ways to go, but my problem lies with transparency maps. I am trying to get a torn effect with his cape/cloth bits and have tried applying a black/white image to the out transparency channel of the surface shader I'm using. I've also tried a targa file with an alpha channel applied to a lambert material. The self illuminated surface shader won't let me get any transparency effects, and when I use a lambert, I can get transparency in the area I intend, but it gives me funky transparency all over the model as illustrated in the last image. At the moment I just colored some grey to show where the transparent parts of the cloth will be. Has anyone else encountered this problem, or could I be directed to a tutorial that addresses this issue? I'm desperate! I'm using maya 7. I hope my rambling makes a little sense. Thanks very much for any help you might be able to provide!

surface shader with no transparency map:
http://i3.photobucket.com/albums/y69/clutchyourideas/drac15.jpg

wireframe:
http://i3.photobucket.com/albums/y69/clutchyourideas/drac16.jpg

back, no transparency applied:
http://i3.photobucket.com/albums/y69/clutchyourideas/drac18.jpg

lambert with a transparency applied(look at the armor, arm, etc:
http://i3.photobucket.com/albums/y69/clutchyourideas/drac17.jpg

JYoung
09-03-2006, 06:26 AM
I'm pretty sure it's videocard related. I had a similar issue using high quality rendering with transparency in maya awhile ago, and after searching the forums it looks to be a common issue with no resolution(that I could find anyway). The only thing I can think of is assigning a completely different shader to that cloth part that needs an alpha.

madmenno
09-03-2006, 09:45 AM
Hey, nice model!

Did you try rendering it? Myself uses 3D max and in viewport the transparancy map does not work. I thought that would be normal, so if anyone knows how to fix that i'd be happy to.

pongstah
09-03-2006, 10:43 AM
Nice Character! I like the color combination :)

I remember I had the same problem a while back but I already forgot how I fixed it...

psychojohno
09-03-2006, 09:24 PM
i could never get my models with alpha maps to appear transparent in the right places in the viewport using maya but it did work when i rendered it. To fix this i saved my textures with the alpha map included with the color as a tga:shrug: try it, it worked for me!

It looks awesome by the way i love the way you painted the skin

cyi
09-11-2006, 12:42 AM
I've been trying to make time to work on this at night, but it's been slow going, especially since I broke my tablet pen last week etc...just got a new pen for it so I'm trying to finish the textures for this guy (still have a ton more work to do obviously)...I want to put a ton more detail in there, dirty him up, lots of blood, fix seams...etc. Please feel free to crit my work so far :) !!! (3500 tris)

yungimoto: Yes, I agree with you...it's probably my video card, thanks for the heads up! I tried your work around with the different shader for those bits and it works...thanks again.

madmenno: Thanks! I have tried rendering, and it does fix the problem...I just like the look of viewport caps for low poly stuff :)

pongstah: thanks a lot...I think I figured out

psychojohno: Yeah I have achieved the transparency with the tga like you suggested. thanks for the advice and kind words!

Here's some updates:
http://i3.photobucket.com/albums/y69/clutchyourideas/drac22.jpg
http://i3.photobucket.com/albums/y69/clutchyourideas/drac23.jpg
http://i3.photobucket.com/albums/y69/clutchyourideas/drac24.jpg
http://i3.photobucket.com/albums/y69/clutchyourideas/drac25.jpg
http://i3.photobucket.com/albums/y69/clutchyourideas/drac26.jpg

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