USD Export: option to triangulate meshes #121274
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Reference: blender/blender#121274
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Delete Branch "CharlesWardlaw/blender:feature/usd_triangulate_export"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
This allows for the source of truth data in the Blender scene to remain untouched while producing triangulated output suitable for game and VR pipelines, where only triangles are ingested.
The changes look good and I will approve this pull request.
Another reason this feature is important is that it's a known issue that Hydra / storm do not handle rendering concave ngons well, so that triangulating on export is one way to fix such rendering problems.
For example, if you open the attached
ngon_usd_export_test.blend
file and export to USD, the concave polygon renders as a quad when the USD is opened inUSDView
with flat shading enabled. Triangulating the polygon on export fixes this issue.I'm approving this, but the pull request will require resolving conflicts with latest main before it can be merged.
e9f39b941d
tod4306d2d83
@makowalski I rebased on main and tested-- should be good to go now.
@blender-bot build
USD Export: Added the ability to triangulate meshes at export time.to USD Export: option to triangulate meshesJust a minor nit I think.
@ -280,6 +288,14 @@ static void wm_usd_export_draw(bContext *C, wmOperator *op)
uiItemR(row, ptr, "author_blender_name", UI_ITEM_NONE, nullptr, ICON_NONE);
uiLayoutSetActive(row, RNA_boolean_get(op->ptr, "export_custom_properties"));
col = uiLayoutColumnWithHeading(box, true, IFACE_("Meshes"));
Can we leave off the "Meshes" heading column? I think it's fine the way it was in the usd-branch as just "[ ] Triangulate Meshes"
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