Info into Vertex colors don't match

   845   2   0
User Avatar
Member
2 posts
Joined: 11月 2017
Offline
Hello,

I wanted to ask because I've found an issue when working with houdini engine in UE5 and vertex color info giving me different results

So for the test case, I just dragged a Labs Measure Curvature node. Then in a attrib wrangle I copy Curvature to @Alpha like this:
@Alpha = @Cd.r;

Then in unreal, I did noticed, that the default info in @Cd.r added by the curvature node doesn't match what's on the @Alpha. I also manually exported and imported the mesh and the thing is, when using the ROP FBX output, the resulting mesh does not have such issue.

What am I doing wrong/missing?


Edited by THA_as - 2024年6月17日 02:43:06

Attachments:
Untitled-2.jpg (314.2 KB)
Untitled-1.jpg (315.2 KB)

User Avatar
Member
2 posts
Joined: 11月 2017
Offline
No one? it looks like for vertex colour it applies some conversion, not sure if they are being stored in sRGB or not. Does anybody knows?
User Avatar
Member
1 posts
Joined: 5月 2012
Offline
Hi , I had the same problem with not matching Vertex color.
After some searching found that there was a bug in Houdini Engine not aplying Linear space color conversion when getting Static Mesh from Unreal.
Bug was fixed in HE version 2.1.1, but I have to use Unreal 5.1 (project requirements)
and on this version the bug is not fixed yet.

Attachments:
vc_not_match.png (37.9 KB)

  • Quick Links