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Exporting parts as single meshes instead of many sub-meshes.
Chris_Lehnen
Member Posts: 2 ✭
Hi there. So, I'm trying to use the GLTF exporter to transfer my Onshape models to the Godot engine for viewing purposes. Coming from Inventor, I was initially really excited to be able to go directly to GLTF and skip the 3DSmax -> FBX steps, but I'm running into a roadblock.
It would seem that instead of creating a single mesh for each part, Onshape instead creates a unique sub-mesh for each face of the part and bundles those all together into the one object. I can see where this is coming from, as it helps support faces having unique colors, however it can absolutely destroy the performance of a real-time engine like Godot, since it may now take hundreds of draw calls to render a single object instead of just one. Multiply this by a large model that may have hundreds or more parts and it can simply become impossible to run. I've also tested this with OBJ files, and it seems to behave in the same way.
Is there some way to get Onshape to export parts into a mesh format (GLTF, OBJ, etc.) where the entire part is encapsulated in a single mesh object instead of being split into each face first, or perhaps grouping all faces of similar colors together?
It would seem that instead of creating a single mesh for each part, Onshape instead creates a unique sub-mesh for each face of the part and bundles those all together into the one object. I can see where this is coming from, as it helps support faces having unique colors, however it can absolutely destroy the performance of a real-time engine like Godot, since it may now take hundreds of draw calls to render a single object instead of just one. Multiply this by a large model that may have hundreds or more parts and it can simply become impossible to run. I've also tested this with OBJ files, and it seems to behave in the same way.
Is there some way to get Onshape to export parts into a mesh format (GLTF, OBJ, etc.) where the entire part is encapsulated in a single mesh object instead of being split into each face first, or perhaps grouping all faces of similar colors together?
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