Problem summary Performance drop in OpenGL after modifying components of a displaced mesh. The mesh must be in catmull-clark or Subdivison mode.
Customer reported version modo.13.2v1
Customer reported platform windows10
Steps to reproduce 1) Open Modo. 2) Select File > open and open the attached scene. Located the imported images if necessary. 3) Press "1" to enter component selection mode. 4) Select a vertex on the mesh. 5) Press "W" to enable the move tool. 6) Move the vertex slightly. Modo should slow down. 7) Press "Q" to drop the tool. Result: Modo should still be slow. Manipulating the viewport (i.e. rotating, zooming, panning) will be extremely sluggish.
Expected behaviour Modo should not slow down after manipulating a component of a displaced mesh.
Actual behaviour Modo slows down semi-permanently after manipulating a component of a displaced mesh in subdivision or catmull-clark mode.
Workaround Switching the mesh to face mode and back should "reset" the performance drop, however it will re-occur if the mesh is manipulated.
Reproduced by support This bug has been reproduced in: 13.2v1 - Windows 10, OSX 10.14.6 13.1v1 - Windows 10, OSX 10.14.6
Unable to reproduce bug in: 13.0v1 - Windows 10, OSX 10.14.6
Earliest version tested 13.0v1 - Windows 10, OSX 10.14.6 - This issue doesn't appear in this version and has regressed