Erin Catto comments

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                                            Erin Catto

Box2d failed to build with "error C3861: '__rdtsc': identifier not found" on Windows arm64 with MSVC

Closing this due to lack of reply.

All b2Body uses 32-bytes for their debug name. Maybe this can be debug only?

I could use a string pool and make it 4 bytes. Are you concerned about some memory constrained devices?

All b2Body uses 32-bytes for their debug name. Maybe this can be debug only?

I've found body names to be useful with debug draw and debugging in general. I've even setup a natvis to show them for a b2BodyId. If I was concerned about...

Crash in b2UpdateBodyMassData because of missing increment of loop variable

Easy solve, stop using 0 density. :)

Crash in b2UpdateBodyMassData because of missing increment of loop variable

Thanks for the report. Fixed in #1022

Possible memory access issue in ShapeDistance sample (invalid m_simplexIndex initialization)

I don't see it being initialized to `-1`. What line number?

Possible memory access issue in ShapeDistance sample (invalid m_simplexIndex initialization)

Thanks for the report. Fixed in #1022

Opt-out from world step profiling

This normally has no overhead. Not an issue on other platforms. Are you going through Rosetta?

Opt-out from world step profiling

Another user reported this and I already investigated in the benchmark app. Profiling didn't slow it down on an M2 MacBook Air. If you think about it, why would a...

Opt-out from world step profiling

Okay, reading this again, it sounds like you are running many worlds in parallel. Perhaps `mach_absolute_time` doesn't like to be called from multiple threads simultaneously. I'm not really optimizing the...