Commit Graph

7 Commits

Author SHA1 Message Date
Patrick Sean Klein a1fe6ffa19
NavigationPolygon: Implement get/set_polygon fast paths. 2024-08-17 00:31:58 +02:00
Arseny Kapoulkine 0fde03c0e0 Optimize base and shadow meshes for cache
Previously, vertex cache optimization was ran for the LOD meshes, but
was never ran for the base mesh or for the shadow meshes, including
shadow LOD chain (shadow LOD chain would sometimes get implicitly
optimized for vertex cache as a byproduct of base LOD optimization, but
not always). This could significantly affect the rendering performance
of geometry heavy scenes, especially for depth or shadow passes where
the fragment load is light.
2024-08-16 07:36:12 -07:00
Rémi Verschelde e58a7530aa
Merge pull request #93727 from zeux/raycast-opt
Disable normal raycaster for LOD generation by default
2024-08-16 10:34:03 +02:00
Arseny Kapoulkine 18d6ae1161 Fix LOD generation for meshes with tangents & mirrored UVs
When UVs are mirrored in a mesh, collapsing vertices across the
mirroring seam can significantly reduce quality in a way that is not
apparent to the simplifier. Even if simplifier was given access to UV
data, the coordinates would need to be weighted very highly to prevent
these collapses, which would penalize overall quality of reasonable
models.

Normally, well behaved models with mirrored UVs have tangent data that
is correctly mirrored, which results in duplicate vertices along the
seam. The simplifier automatically recognizes that seam and preserves
its structure; typically models have few edge loops where UV winding is
flipped so this does not affect simplification quality much.

However, pre-processing for LOD data welded vertices when UVs and
normals were close, which welds these seams and breaks simplification,
creating triangles with distorted UVs.

We now take tangent frame sign into account when the input model has
tangent data, and only weld vertices when the sign is the same.
2024-07-23 16:35:46 -07:00
Arseny Kapoulkine a13a64eacd Disable normal raycaster for LOD generation by default
Normal raycaster makes LOD generation process >2x slower and often
generates normals that look significantly worse compared to what the
simplifier comes up with by default. This was likely different before
last meshoptimizer upgrade, as the attribute metric was not functioning
properly, but now it looks like it's doing more harm than good.

This change makes it disabled by default but keeps an easy option to
re-enable it per mesh using LOD parameters for now until we get more
confidence and can remove the code outright.

Because the long term plan would be to disable this feature entirely,
the scripting API isn't changed, and it's just off-by-default there with
no way to re-enable.
2024-07-02 10:18:15 -07:00
Lyuma a99756a07f Expose create_from_arrays in SurfaceTool and cleanup some naming 2024-04-19 18:45:06 -07:00
Aaron Franke c399424db9
Move 3D-only resources to their own folder 2024-02-26 05:23:04 -06:00