Local function makeMeshPart(name, color, v1, v2, v3) Plus-epsilon 1462×1144 39.7 KB Repro local HEIGHT = 10 thinks its extents are Vector3.new(0.05, SIZE, SIZE) This one renders with side length SIZE^2, though it still

Only the red triangle, normal to the X-axis, is visible, and it is the wrong size (I included balls where the vertices should be). This is the result of making the three axis-aligned triangles, as in the repro code. Videos and images: Full repro code is at the bottom. When: I first observed this yesterday, July 15. I am testing on an M2 mac, with Roblox Studio Version 0.5071 (it is the native apple silicon app) Where: I don’t know if this is a studio bug or engine bug, since I can only test DynamicMesh in studio. Quad on the left is just a straight 0…1 uv’d quad from 3dsmax via the studio importer, quad on the right is procedurally generated. When I generate the mesh myself and pass in the tangent information via the roblox cloud API, the tangents are generated correctly.

It seems quads, when they do import (say with a tree with fins) also get incorrect tangent and binormals generated. However this bug report from two years ago suggests it could be a general mesh bug.īug Report - FBX/OBJ import failing on simple quads Studio Bugs I don’t know if this is specific to DynamicMesh, or if this is a general bug with Roblox meshes.

In all these cases, adjusting one of the vertices along the normal axis by a small amount fixes the problem (it actually appears, and at the right size), it’s only when the triangle becomes exactly axis aligned that it stops rendering properly (but I haven’t tested thoroughly to find other examples). The meshpart properties (like Size, MeshSize, ExtentsSize), all have the correct dimensions, yet it appears much larger. if the triangle actually has side length 5, it will be rendered with side length 25. If the triangle is normal to the X axis, then the side-length of the rendered triangle is too large by a multiple of the actual side length, i.e. If the triangle is normal to the Y or Z axes, the mesh won’t render at all. the 3 vertices have identical X,Y or Z values), then it will fail to render properly. When creating a dynamic mesh, if a triangle is axis aligned (i.e.

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