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Reverse mesh poly winding order

This commit is contained in:
Jarrod Doyle 2025-01-26 17:20:46 +00:00
parent 007b4f8f1c
commit 8ae23eafb6
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
1 changed files with 2 additions and 1 deletions
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KeepersCompound.Lightmapper/MeshBuilder.cs
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@ -155,12 +155,13 @@ public class MeshBuilder
var indexOffset = _vertices.Count; var indexOffset = _vertices.Count;
// Polygons are n-sided, but fortunately they're convex so we can just do a fan triangulation // Polygons are n-sided, but fortunately they're convex so we can just do a fan triangulation
// Embree triangle winding order is reverse of LGS winding order, so we go (0, i+1, i) instead of (0, i+1, i)
_vertices.AddRange(vertices); _vertices.AddRange(vertices);
for (var i = 1; i < vertexCount - 1; i++) for (var i = 1; i < vertexCount - 1; i++)
{ {
_indices.Add(indexOffset); _indices.Add(indexOffset);
_indices.Add(indexOffset + i);
_indices.Add(indexOffset + i + 1); _indices.Add(indexOffset + i + 1);
_indices.Add(indexOffset + i);
_primSurfaceMap.Add(surfaceType); _primSurfaceMap.Add(surfaceType);
_triangleCount++; _triangleCount++;
} }