I’m trying to do a classic lightmapping, i log a geometry attributes and see the 3 buffers: positions, normals, uv:
Object { position: {…}, normal: {…}, uv: {…} }
normal: Object { itemSize: 3, count: 24, normalized: false, … }
position: Object { itemSize: 3, count: 24, normalized: false, … }
uv: Object { itemSize: 2, count: 24, normalized: false, … }
My question is, how to add a second UV coordinates layer to display the lightmap ?
Fennec
2
I believe the second set of UV attribute need to be named uv2
uv2: Object { itemSize: 2, count: 24, normalized: false, … }
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Here’s what i read in the documentation of materials:
I’m looking for an example of this “second set of uv coordinates”.
How do i create this new attribute ?
Fennec
5
If the first uv
attribute is already set, you can clone it.
const uvAttr = geometry.getAttribute("uv");
geometry.setAttribute("uv2", uvAttr.clone());
2 Likes
Thank you, i’m gonna try that.
1 Like