Maybe it is not really a Bug..... I, of course, can not say, if it's really the Material that turns from 1-sided to 2-sided, but it looks like that. It happens, when you collide hard enough with your Car. It would be interesting, to know if that Effect can be avoided by us or "fixed" by the Devs or if it's just the Way how it works and we have to live with it. The below Video shows the Effect
I forgot to add some S397 Member to get more Attention and hopefully a Reply, so i do it now. @Alex Sawczuk @Coutie
Here they are (Body and the 2 Wings) and the used Textures. Just as an additional Info: it also happens, when the Material is WCCARBODY with IBL Shader.
How is that meant? It is only a 1-sided Material and 1 Poly Layer, so it has to look like that in 3DSMax too, if Backface Cull is activated. The turn into 2-sided happens with the Collision. Did you do the Crashtest too?
@Coutie I just tested it with the S397 Porsche 992 GT3 Cup Body and with that, the Effect does not appear. So i will investigate a bit more and come back to you, if i have News. Thank you so far.
@Coutie Here i am again. I've made another Test with 2 S397 Cars now, the FISIR 2012 and the Porsche 992 GT3 Cup. Please watch the new Video, that shows that the turn from 1-sided into 2-sided Material happens for the FISIR, but not for the Porsche. Do you think that i could get a WCCARBODY Material JSON and all used Textures from the 992? That would be great, to check if the Difference is caused by that. EDIT The Video is deleted, because also the 992 turns the Material from 1 into 2-sided. I just was a bit too slow, to let the Effect appearing.
@Coutie I have to correct my former Post. Also the 992 Cup Car turns the Material from 1 into 2-sided, when i collide. I just was a little bit too slow in my former Test. So the Question still stands: why does that happens and can it be fixed/avoided?
Could it be that the damage texture or material settings for it (also the shader) is setup as double-sided? No clue if that would be something we normal dudes could verify though...
I don't think so, because the turn in the Material only happens when you collide with around 250 km/h+. If it would be set as 2-sided, it would always be 2-sided. And because it also happens with S397 Content, DLC and Workshop, i think it's a basic "Problem". When everything is modeled properly, you probably will never notice it. But if, for Example, the inner Side of the Engine Cover of a Formula Car is modeled a little bit bigger than the outer Part, you normally would not notice it too, but when it turns into 2-sided, it covers the outer Part and that is well visible then.
I have tested with different Materials already and also with a DLC Car and the Target is to get it basically being "solved". If you want, i can again upload the Video with Test with the Porsche 992 GT3 Cup, where it happens with the WCCARBODY Material too. And for that, there is no alternative Material available.
Don't get me wrong, I just want to give some other perspective to help identify potential root causes. You know, WCCARBODY is just a name of a material. The material can use any shader available, including the car body shader with visual damage. My blind guess was that the visual effects as part of the shader or their setup causes the problem (e. g. blending of textures over each other). That said, I would apply a simple T1 shader to the material and crash test again. If the same happens (I strongly doubt it) then there is a general issue. If nothing happens, I'd go for another shader, maybe a t1 with spec and alpha blend, etc. pp. This way it should be possible to narrow down the true root cause for the observed problem. Hope that makes sense now
Don't get me wrong too. The Problem is shown in the Video and it is something that can not be checked by us, because we don't know what happens (we don't know the games Code). And so i don't want to waste xxx Hours with something that we can not really check in a senseful Way.