Monterey 12.6.4 broke metal sphereWithExtent and cylinderWithExtent

Can you share your code please?

My code is based off: https://medium.com/@warrenm/thirty-days-of-metal-day-12-mdlmesh-and-mtkmesh-1a9f57400e2d

Running https://github.com/metal-by-example/thirty-days-of-metal/tree/master/12/MetalMTKMesh shows the error.

This is what they look like in 3D

It looks like your screenshot is from a different project, as Warren’s project doesn’t have a cylinder in it. Can you please share the exact code you are running to produce the scene you included a screenshot of?

I think I found the problem.

This works except on 12.6.4

    let mdlVertexDescriptor = MDLVertexDescriptor()
    mdlVertexDescriptor.vertexAttributes[0].name = MDLVertexAttributePosition
    mdlVertexDescriptor.vertexAttributes[0].format = .float3
    mdlVertexDescriptor.vertexAttributes[0].offset = 0
    mdlVertexDescriptor.vertexAttributes[0].bufferIndex = 0
    mdlVertexDescriptor.vertexAttributes[1].name = MDLVertexAttributeNormal
    mdlVertexDescriptor.vertexAttributes[1].format = .float3
    mdlVertexDescriptor.vertexAttributes[1].offset = 12
    mdlVertexDescriptor.vertexAttributes[1].bufferIndex = 0
    mdlVertexDescriptor.bufferLayouts[0].stride = 24
    vertexDescriptor = MTKMetalVertexDescriptorFromModelIO(mdlVertexDescriptor)!

This works everywhere

    let mdlVertexDescriptor = MDLVertexDescriptor()
    mdlVertexDescriptor.vertexAttributes[0].name = MDLVertexAttributePosition
    mdlVertexDescriptor.vertexAttributes[0].format = .float3
    mdlVertexDescriptor.vertexAttributes[0].offset = 0
    mdlVertexDescriptor.vertexAttributes[0].bufferIndex = 0
    mdlVertexDescriptor.vertexAttributes[1].name = MDLVertexAttributeNormal
    mdlVertexDescriptor.vertexAttributes[1].format = .float3
    mdlVertexDescriptor.vertexAttributes[1].offset = 16
    mdlVertexDescriptor.vertexAttributes[1].bufferIndex = 0
    mdlVertexDescriptor.bufferLayouts[0].stride = 32
    vertexDescriptor = MTKMetalVertexDescriptorFromModelIO(mdlVertexDescriptor)!

Seems related to: https://forums.kodeco.com/t/chapter-5-starter-project-stride-number-when-setting-normals/60781/8

Appears to be fixed in 12.6.8