System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: Radeon RX 570 Series ATI Technologies Inc. 4.5.14800 Core Profile Context 22.5.1 30.0.15021.11005
Blender Version
Broken: version: 3.4.0 Alpha, branch: master, commit date: 2022-09-07 19:33, hash: rB0a32f6b76a63
Worked: 3.4.0 September 06 build f0a36599007d
Caused by rB6951e8890ae3: Mikktspace: Optimized port to C++
Short description of error
This is from Poly Haven's pawn shop scene file. I don't know how this mesh is made but this modular_industrial_pipes_01_pipe04 has all its vertices at its origin. It causes crash when I try to preview or render the scene (both on Cycles and EEVEE).
I can recreate this issue by making my own mesh with all its vertices at its origin and connect a normal map in the material.
Based on casual bisecting and the log below, I'm guessing this is caused by Mikktspace optimization 6951e8890ae3. The mesh does not cause crash on builds before it was committed.
# backtrace Exception Record: ExceptionCode : EXCEPTION_ACCESS_VIOLATION Exception Address : 0x00007FF77637C883 Exception Module : blender.exe Exception Flags : 0x00000000 Exception Parameters : 0x2 Parameters[0] : 0x0000000000000000 Parameters[1] : 0x000001C6C1512750 Stack trace: blender.exe :0x00007FF77637C850 ccl::MikkMeshWrapper<0>::GetTexCoord blender.exe :0x00007FF776381B80 mikk::Mikktspace<ccl::MikkMeshWrapper<0> >::calcTexArea blender.exe :0x00007FF776376F90 mikk::Mikktspace<ccl::MikkMeshWrapper<0> >::runParallel<<lambda_745021aa6c9ea81ca20b036389cc5bbd> > blender.exe :0x00007FF776386990 mikk::Mikktspace<ccl::MikkMeshWrapper<0> >::genTangSpace blender.exe :0x00007FF776388F30 ccl::mikk_compute_tangents blender.exe :0x00007FF77637FCE0 ccl::attr_create_uv_map blender.exe :0x00007FF776381C50 ccl::create_mesh blender.exe :0x00007FF776389C90 ccl::BlenderSync::sync_mesh blender.exe :0x00007FF77635DF20 <lambda_6fb83369bd0ca121397306d35acda18d>::operator() blender.exe :0x00007FF7796EFBB0 tbb::internal::function_task<std::function<void __cdecl(void)> >::execute tbb.dll :0x00007FFB1552F220 tbb::recursive_mutex::scoped_lock::internal_try_acquire tbb.dll :0x00007FFB1552F220 tbb::recursive_mutex::scoped_lock::internal_try_acquire tbb.dll :0x00007FFB15524FD0 tbb::interface7::internal::isolate_within_arena tbb.dll :0x00007FFB1552A120 tbb::task_scheduler_init::terminate tbb.dll :0x00007FFB1552D800 tbb::thread_bound_filter::try_process_item tbb.dll :0x00007FFB1552D800 tbb::thread_bound_filter::try_process_item ucrtbase.dll :0x00007FFB1C331B20 configthreadlocale KERNEL32.DLL :0x00007FFB1C9E7020 BaseThreadInitThunk ntdll.dll :0x00007FFB1E4A2680 RtlUserThreadStart
Exact steps for others to reproduce the error
- Open the above file, and try material preview or render preview