`gpModelMatrix` needed to be set by reference. Reference needed to be float4x4. float4x4 cannot be inside C allocated struct (alignment). Move the `object_bound_mat` to the instance struct to workaround this issue.
`gpModelMatrix` needed to be set by reference. Reference needed to be float4x4. float4x4 cannot be inside C allocated struct (alignment). Move the `object_bound_mat` to the instance struct to workaround this issue.