[Blender] Weird rendering of faces being behind transparent.

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Andrey01
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[Blender] Weird rendering of faces being behind transparent.

by Andrey01 » Thu May 09, 2019 18:30

I`ve made the car windows are transparent (enabled 'Transparency' parameter) and if I increase the opacity value from 0 in Gimp of the car texture in Blender some faces are being behind the windows get looked transparent dependently of the camera location, they as if disappear inside the car:
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Who does know what causes it?
 

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Re: [Blender] Weird rendering of faces being behind transpar

by runs » Fri May 10, 2019 10:36

Probably a normals issue. You have to recalculate them.

1) Save your model to test.

2) In edit mode, press 'A' to select all, or what you want.

3) Search in the menu Mesh for the 'Recalculate normals outside' option, or inside.


Then your faces turn, but in the other side will be transparent maybe. A solution: To solidify. Use the 'Solidifier' Modifier to create a double sided mesh.
 

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Re: [Blender] Weird rendering of faces being behind transpar

by Andrey01 » Fri Jun 21, 2019 09:45

runs wrote:Probably a normals issue. You have to recalculate them.

1) Save your model to test.

2) In edit mode, press 'A' to select all, or what you want.

3) Search in the menu Mesh for the 'Recalculate normals outside' option, or inside.


Then your faces turn, but in the other side will be transparent maybe. A solution: To solidify. Use the 'Solidifier' Modifier to create a double sided mesh.

Now it doesn`t work with a bus model. I`m trying to calculate outside and inside normals:
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https://ufile.io/oi3hfhb7
https://ufile.io/gfbbmwsa
 

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Re: [Blender] Weird rendering of faces being behind transpar

by TumeniNodes » Fri Jun 21, 2019 18:53

remember that MT does not handle transparency in a complete and proper manner. You are always going to have some issues/glitches when not using 100% transparency.
i.e. it may look fine from one direction, but from another, objects behind the trans will also seem to disappear. This is still found in the issues section in the repo, though I forget the # to link to and do not feel like diving into issue-lake atm
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Re: [Blender] Weird rendering of faces being behind transpar

by Andrey01 » Sat Jun 22, 2019 17:05

TumeniNodes wrote:remember that MT does not handle transparency in a complete and proper manner. You are always going to have some issues/glitches when not using 100% transparency.
i.e. it may look fine from one direction, but from another, objects behind the trans will also seem to disappear. This is still found in the issues section in the repo, though I forget the # to link to and do not feel like diving into issue-lake atm

But the problem is that it happens even in blender. However, it works with my car (I created separate object with those faces and then united that with the car). There are only the floor and the wall displayed in the bus, but not dispalyed the steering wheel and the seat.
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Re: [Blender] Weird rendering of faces being behind transpar

by TumeniNodes » Sat Jun 22, 2019 22:15

Ah, I thought you were referring to it's rendering in MT.
Have you tried https://blenderartists.org/c/support ?
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Re: [Blender] Weird rendering of faces being behind transpar

by Andrey01 » Sun Jun 23, 2019 17:07

TumeniNodes wrote:Ah, I thought you were referring to it's rendering in MT.
Have you tried https://blenderartists.org/c/support ?

Wow, there`s even whole blender forum? Thanks!
 

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Re: [Blender] Weird rendering of faces being behind transpar

by sirrobzeroone » Mon Jun 24, 2019 07:59

edit: My bad, I squinted a bit harder and can see your using blender render :)

so cycles render info not relevant sorry
 


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