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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
.github Merge pull request #94444 from Repiteo/ci/bump-scons 2024-07-22 17:24:07 +02:00
core
doc Bind PhysicsServer*D::body_set_state_sync_callback 2024-07-23 13:30:44 +02:00
drivers Merge pull request #94628 from Chaosus/rendering_fix_crash 2024-07-23 13:08:18 +02:00
editor Android Editor: Make progress dialog visible again 2024-07-23 17:36:07 +02:00
main Merge pull request #88065 from Riteo/ds-pref-consistent 2024-07-22 17:30:21 +02:00
misc Merge pull request #94652 from shana/fix-header-guards 2024-07-23 16:19:15 +02:00
modules GDScript: Fix false positive cases of ENUM_VARIABLE_WITHOUT_DEFAULT 2024-07-22 21:45:01 +03:00
platform Disable FP contraction. 2024-07-23 14:33:51 +03:00
scene Fix LOD generation for meshes with tangents & mirrored UVs 2024-07-23 16:35:46 -07:00
servers Merge pull request #94656 from BlueCube3310/cubemap-layers-retrieve-fix 2024-07-23 15:55:53 +02:00
tests
thirdparty Disable FP contraction. 2024-07-23 14:33:51 +03:00
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methods.py Merge pull request #93753 from Repiteo/scons/visual-studio-fixes 2024-07-22 17:30:25 +02:00
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SConstruct Merge pull request #93753 from Repiteo/scons/visual-studio-fixes 2024-07-22 17:30:25 +02:00
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Godot Engine

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2D and 3D cross-platform game engine

Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel. Games can be exported with one click to a number of platforms, including the major desktop platforms (Linux, macOS, Windows), mobile platforms (Android, iOS), as well as Web-based platforms and consoles.

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