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FSX Another transparency issue

Amengol

Amengol

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138
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ca-britishcolumbia
Hello,

I'm having a problem with the transparency of a grass that I did. From certain angles it draws the objects behind. Both objects are made with LODs and, in theory, would need to be made so, because I need to control the distance when it shows (unless you have another technique for this in FSX).
None of this occurs when I'm not using LODs, though.

Could anyone help me?
 
Hi,

That's interesting, I have not heard before of LODs having an influence on the drawing order of things. Are you sure that you are using materials with exactly the same settings in the different LODs?
 
No. It is not the same settings for the materials! For the grass I have just one material, but to the other objects I have more materials, but in just one MDL with LODs too. If I don’t use LODs to those objects, the issue is gone!
 
Hi,

I understand the different objects have different materials. But within one object, do the different levels of details use the same materials?
 
The grass are in different MDL.

Terminal and other objects are in one MDL, with LODs, no problems with transparence between those objects.
The grass are in separate MDLs, also with LODs, and the problem occurs between the grass and the other objects. Did you got it?

If I make the Terminal and other objects without LODs, the problem doesn't occur.
 
Hi,

Yes, I got that. And when you make the terminal with LODs, do these different LODs all use the same materials with the same settings? Or do the lower LODs have another material?
 
Which tool are you using to make each version?

The main difference you will have using LODs with (say Max) is the addition of the .xanim tag, which will alter how the material is rendered.

However, you usually have less problems, rather than more ... apart from interposed objects.

Ztesting may not solve this.
 
arno said:
Hi,

Yes, I got that. And when you make the terminal with LODs, do these different LODs all use the same materials with the same settings? Or do the lower LODs have another material?
Click to expand...

LOD_400 uses the same number of materials as LOD_350, but LOD_150 just uses one of them.

The grass uses just one material!

Has it any influence to the drawing order? I did not know!
 
hcornea said:
Which tool are you using to make each version?

The main difference you will have using LODs with (say Max) is the addition of the .xanim tag, which will alter how the material is rendered.

However, you usually have less problems, rather than more ... apart from interposed objects.

Ztesting may not solve this.
Click to expand...

Hi, hcornea!!

I'm using just MAX9 and exporting with .xanim to get the LODs working. Could you explain what is the difference in how the material is rendered between the two ways of compiling?
 
You are adding a dummy animation to get the LODs working persumedly.

Hence the materials are not enabled for drawcall batching.

The advanced transparency settings will not work the same way, as a different part of the FSX 3D engine is being used.
 
hcornea said:
You are adding a dummy animation to get the LODs working persumedly.

Hence the materials are not enabled for drawcall batching.

The advanced transparency settings will not work the same way, as a different part of the FSX 3D engine is being used.
Click to expand...


Thanks for your explanation!
 
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