Sam Mason

Sam Mason

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Recent Forum Posts

gltf's on stage - materials broken in karma 2025年10月23日11:07

Hello!
Allowing the direct import of gltf to stage via reference or sublayer is super exciting for kitbash-
I tested a bunch of models from sketchfab. The materials work in vk/gl. the objects have a usd preview material where a material x or openpbr would be ideal. but that's not the main issue - the material looks correct in viewport. but karma shades without textures.

The step of recreating the material results in broken uvs. Simply doing an edit material on the imported material also will break uvs. this is doing nothing but running an edit material / not touching anything.

This is consistent with all sketchfab models I've tested

vulkan / opengl ndc coords aka ogl camera projection 2025年9月25日16:36

anyway to do this without subdividing the ground plane to smithereens? just for layout playblasts. position from:ndc or from:camera seems to not work in vulkan or opengl though it works in karma.

Scene import bugs- or are they 2025年2月12日12:14

1. Importing packed geo with materials-

a christmas tree with presents. multiple materials. laid out in obj. Some packed instances, some unique geo.

If imported as point instances, materials come through.
if imported as native instances, materials break.

2. An object with material applied. then packed. Scene import as point instances.

Imports with materials if you add * to the additional materials.
Does not for some reason if you don't specify additional material field.

Does work if the packed geo has the material applied AFTER packing, without specifying additional materials.

The logic of additional materials is confusing. Why should this be needed for any geo, packed or not which is given a material?

materials assigned to objs and to sops both checked on should bring these materials in right?

Why do materials assigned to packed objects then brought in as native instances (we often need to continue tweaking layout on stage.) vanish?

Am I doing it wrong is it suppose to be this chaotic?
Love
S