search

KhronosGroup / glTF-Blender-IO

Blender glTF 2.0 importer and exporter
https://docs.blender.org/manual/en/latest/addons/import_export/scene_gltf2.html
Apache License 2.0
1.5k stars 319 forks source link

Draco version using 1.5.2 s/b 1.5.6 #1949

Open imagiscope opened 1 year ago

imagiscope commented 1 year ago

Blender is using Draco 1.5.2 - can this be updated to recent version (1.5.6) as the mesh capabilities for google tiles does not seem to be fully supported in this version (incorrect vertices on some meshes).

sample glb file with incorrect vertices in Blender - the mesh has a cut in it and it should be flat/rectangular.

Screenshots in blender: image

proper glb: image

file: glb file with importing issues; 20527152615272443156.zip

I am using python import_scene.gltf to import the tile/mesh.

Windows 11, Blender 3.6

DRx3D commented 1 year ago

Are there any issues with Draco compression as defined in the glTF extension KHR_draco_mesh_compression?

imagiscope commented 1 year ago

I'm not sure. I'm investigating on my end to provide you more information.

The issue arises when importing glb tiles from Google API. About 2-3% of the files will incorrectly position vertices leaving gaps in the mesh. When it happens, it seems to affect several faces of the mesh. All other meshes import correctly (2000-3000 files).

R

On Fri, Jul 7, 2023, 2:26 p.m. Leonard Daly (Daly Realism) < @.***> wrote:

Are there any issues with Draco compression as defined in the glTF extension KHR_draco_mesh_compression https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_draco_mesh_compression ?

— Reply to this email directly, view it on GitHub https://github.com/KhronosGroup/glTF-Blender-IO/issues/1949#issuecomment-1626043116, or unsubscribe https://github.com/notifications/unsubscribe-auth/AOVJ676SHDJQMVSYIEHJJJ3XPBWITANCNFSM6AAAAAA2CHQA6E . You are receiving this because you authored the thread.Message ID: @.***>