2 uv maps

[Flomotion]

Is it possible to have 2 uv maps. One for a light map and one for the texture?

I've looked for the answer.. but can't find it.

And if it is possible (which I think/hope) how to use it?

thanks!

[davrous]

Yes we have 2 uvs maps supported. Set the uv2 array on the mesh and set the texture on coordinatesIndex = 1.

We've really recently added a lightmap texture property to better support Unity lightmap for our Babylon.js exporter. We will have finish a draft version by the of this week.

David

[Flomotion]

thank you. BabylonJS is amazing!

I know how to set the coordinatesIndex.But I'm not sure how to set the uv2 array on the mesh.

My model is from 3D max (actually from cinema 4D through max). But maybe I should go and use Unity as an inbetween step :-)

Yet, I prefer to create the lightmap from Cinema 4D. It gives me more control.

 

Could you give a small codesnippet how to set that uv2 array? (I did look again before asking)

:-)

[GameMonetize]

Hello 3dsmax exporter will automatically export uv1 and uv2 from 3DSMax. So if your object has 2 textures channels in 3dsmax, it will have the same once exported to babylon

 

You can then specify  diffuse texture (with coordinates index =0) and use the ambient texture slot (with coordinates index = 1) for the lightmap.

 

Nothing to do on babylon.js side, everything will be automatically imported

[Flomotion]

AH, nice and easy.

Merci beaucoup!

[steven_EXC]

Hey guys! I'm trying to understand the workflow from Unity to Babylon using the provided exporter.  Everything seems to look fine except for the lightmaps.  They don't seem to be coming over.  Is lightmapping something that the exporter is supposed to support now?  If not, how would I go about supplying the correct information to the exporter so that my Unity lightmaps come over into babylon?  Is there anything special I need to do to get the second set of UVs that Unity generates for lightmaps over into babylon?

[GameMonetize]

Not really:) We started supporting it but it is not done yet

THe best idea to make it works now with bjs is to export your lightmaps as regular textures and reapply them using uv2

 

(And if you are a good C# developer, we desperately looking for help in this area :))

[NasimiAsl]

i think uv2 don't work in some browsers (chrome maybe )check  i have alternative solution but it is not uv2 just can solve with material stuff is that serious need know about your problem

you can make few  plan Uv with out have any uv map also you can make CubeUV and CylinderUV too

i know need complete ShaderBulder in BJS Before Share any solution (with that) in here But when i see a post i cant stop myself for replay sorry about that

http://babylonjs-playground.com/#1NDRAR#14

[GameMonetize]

uv2 works everywhere. They are not using something fancy.

[JCPalmer]

There are actually up 6 UV maps per mesh.  Since BJS 2.3, when parsing was re-factored, more than 2 would be loaded if they were found in a .babylon file.  I have not changed Blender exporters to do send more than 2 though.