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Problem transparency

L

lumat

Messages
342
Hello all
I hope you'll cam help me :)

I've a problem with an object.
The two screens show it.
in the foreground there are transparent textures and behind opaque textures.
The problem is that the decor appear through them.
The banister (in front) is made with two planes with transparency (the normales are ok).
The structure behind is made with normal textures (without transparency)
Have you an idea about this visual problem ?




Thank you for your help !

Luc
 
Hi Luc,

I recognise something of your problem, but I only have something similar with consecutive transparent materials behind each other. So I'm not sure if that's the same. It probably helps when someone with experience on this kind of textures will advice. Probably something with Z-alpha or anything like that?

Daan
 
Thank you Daan for your answer
Maybe upstairs, second picture, with the windows, there are two consecutive transparent materials...(Is there a solution in this case ?)
But at the bottom of the building, there is no transparent texture behind the stairs .... It's a simple wall ...
Strange ...
 
Which is your alpha test value of these railings? Increasing ist may reduce that effect

Also is that wall really set opaque (source blend = one, destination blend = zero)?
 
Thx Dave :)

Yes, the wall is really opaque, source blend = one, destination blend = zero
For your first question, Alpha Test Level for Z-Test Alpha is 0 (Test Mode Greater)
 
Is "Z test alpha" on?
And what happens when you increase the z-Test level to let's say128?
 
Yes Dave
The Z tzst Alpha is on
If I set the value to 128, it's better. The problem is always here but much less visible !
 
set it even higher then ;)

BTW I still wonder why the solid wall is affected anyway. Although the material is set opaque, does the texture have an alpha channel?
 
The texture of the wall (without transparency) and the texture of the ramp (with transparency) are on the same textures map.
Maybe its the problem ?
Maybe I must create two different maps
 
OK, now the limit of my knowledge is reached. I know that this masking happens when the alpha channel of a texture is used, may it be reflection blending or transparency.
But I'm not sure what happens if an alpha channel is there but not used.

The least work to find that out would probably be to make a copy of the texture map and remove the alpha channel from that copy.
Then link the wall material to the non alpha copy.

I'm curious mayself how this turns out :)
 
Ok thank you very much Dave for this precious help
Tomorrow, I will make the try and come back to tell you what is the result :)
Luc
 
Hi Luc,

I have used this setting for a conflict of transparency
maybe it works for you

 
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