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There are 12 replies to this topic

-Dareln
Junior Member

1 year ago

Hello everyone,

I have a problem with an exterior scene in 3DS max, I have one light there but the roof looks on some places MUCH brighter than on other places. The roof is one object consisting of some polygons, and the object have the one same texture... So my only guess is that the sun affects it, but how can I make it less visible? It's really weird...
Also, can anyone explain to me, why the roof texture looks like crap if I have there bump texture with 50 percent? I mean I know how it works, that dark places are lower and white places are pulled up, but I think I have it correctly done...
(my bump texture here:
[Link to img62.imageshack.us]

And here is the whole scene:
[Link to img10.imageshack.us]

I have some really weird stuff going there on the roof too, but I guess I will solve it by remaking the roof or somehow... thanks for any advices

+VarnishedOtter
Admin

1 year ago

Your roof geometry is really broken.

Can you please post the wires?

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--Matt
2nd Place: Teapot Challenge

+VarnishedOtter
Admin

1 year ago

Also turn down the intensity of your sun, you are over exposing the scene, causing you to lose detail and get color change on the roof.

The red parts of the image is where you have lost detail. Adjust the light so that you fix this and your roof color should be right.

Which renderer are you using??

Please support us and post a [Link to www.digitalartsfront.com] on your website.

--Matt
2nd Place: Teapot Challenge

-Dareln
Junior Member

1 year ago

Thanks so much, I tried to play with the light but I didn't realize it can be something with intesity.
I will sent the wires right away

I'm using Vray, but I'm not sure I'm using correct setting (I'm using Brute force + Photon Map for Illumination) because I'm pretty new to exterior scenes, I mean I know how to setup an interior but not so much about exteriors.... but I still can't figure out what's the bump problem about =/

-Dareln
Junior Member

1 year ago

Here is the wireframes:
The whole house here:
[Link to img855.imageshack.us]

However you can't see much there because the roof is pretty much just few polygons so there is another one with only roof:
[Link to img856.imageshack.us]

I don't if that is the problem but on the right corner of the roof I have points so that corner have kinda U shape... I just have points there, no edges so maybe that could be the problem, I jsut didn't know how else I can do one corner shaped and the other one not (If I connected edges it would not be straight on the left side). That's also why the edge is going invisible here :-x

+VarnishedOtter
Admin

1 year ago

It looks like your UV coords are messed up, you need to UV map probably planar, from above.

Please support us and post a [Link to www.digitalartsfront.com] on your website.

--Matt
2nd Place: Teapot Challenge

-Dareln
Junior Member

1 year ago

I have there box UV mapping. I can try planar but I'm not sure it will change anything :-x

-Dareln
Junior Member

1 year ago

Here is the result with Planar UV mapping (in the middle):
[Link to img41.imageshack.us]

I think it looks the same unfortunately

+VarnishedOtter
Admin

1 year ago

Okay then its definitely a geometry issue, can you please screenshot the unrendered wireframes from max? so I can see through the geometry.

Please support us and post a [Link to www.digitalartsfront.com] on your website.

--Matt
2nd Place: Teapot Challenge

-Dareln
Junior Member

1 year ago

roof only:
[Link to img695.imageshack.us]

house with unnecessary objects hidden:

[Link to img7.imageshack.us]

But the bump problem is still driving me mad, can't figure out whats the problem, googled something about it could be indirect light problem but didnt help me a lot

-Tyson
Senior Member

1 year ago

it looks like you probably have an extra vertex in there that is screwing up the surface, select it and press backspace. If I was to tackle this I'd probably just rebuild the roof section and make everything quads. or maybe try cutting the surfaces up into quad polygons with the cut tool.

-Dareln
Junior Member

1 year ago

Actually a couple of vertices were there.. I used the cut tool and cut it all through so no stand-alone vertices left, and it looks much better now. I wanted to have just one corner shaped, but I guess it can't be that way, so thank you so much for solving it!

And of course thank you VarnishedOtter too for suggestions

Still I can't figure out why the bump maps doesn't work in this scene, not just in roof but any bump map... all looks flat, I have to use little displacement to have at least some plastic effect but it's impossible to have displacement everywhere

+VarnishedOtter
Admin

1 year ago

Bump mapping doesnt actually modify the surface, it only operates on lighting. If you want that kind of detail displacement, or normal mapping would be better.

Please support us and post a [Link to www.digitalartsfront.com] on your website.

--Matt
2nd Place: Teapot Challenge

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