usdgeom-mesh-colocated-points#
Code |
VG.016 |
---|---|
Validator |
|
Compatibility |
core usd |
Tags |
🚀 |
Summary#
Each vertex position should be unique
Description#
Each vertex position should be unique. Multiple vertices at the same position (co-located points) waste memory and can cause rendering artifacts.
Why is it required?#
Memory inefficiency
Potential shading issues
Larger file sizes
Examples#
#usda 1.0
# Invalid: Co-located points
def Mesh "MeshWithColocatedPoints" {
int[] faceVertexCounts = [4]
int[] faceVertexIndices = [0, 1, 2, 3]
point3f[] points = [
(1,1,1), # Point 0
(1,1,1), # Point 1 - same as Point 0
(2,2,2),
(3,3,3)
]
}
# Valid: No co-located points
def Mesh "CleanMesh" {
int[] faceVertexCounts = [4]
int[] faceVertexIndices = [0, 0, 1, 2] # Reuse point 0 instead
point3f[] points = [
(1,1,1),
(2,2,2),
(3,3,3)
]
}
How to comply#
Weld co-located vertices in Source Application
Fix mesh generation settings
Scene Optimizer - Merge Vertices