feat: neon intrinsics packet backend #70
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Adding overloads for a neon intrinsics backend. The code is a ported version of the backend from the enoki repo.
wjakob
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This PR looks good to me (especially since this was ported directly from the Enoki codebase).
Just a few minor comments to be addressed before we merge this.
@wjakob could you remind me the reason for not porting this to Dr.Jit from Enoki during the rewrite?
| #include <ostream> | ||
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This header was needed since std::ostream is used at:
| @@ -442,7 +442,7 @@ void validate_horizontal(const std::vector<value_t<T>> &args, | |||
| value_t<T> (*refFunc)(const T &), | |||
| const value_t<T> &eps = 0) { | |||
| std::mt19937 gen; | |||
| std::uniform_int_distribution<> dis(0, (int) args.size()-1); | |||
| std::uniform_int_distribution<> dis(1, (int) args.size()-1); | |||
| //! @{ \name Reinterpreting constructors, mask converters | ||
| // ----------------------------------------------------------------------- | ||
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| #define ENOKI_REINTERPRET_BOOL(type, target) \ |
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| #define ENOKI_REINTERPRET_BOOL(type, target) \ | |
| #define DRJIT_REINTERPRET_BOOL(type, target) \ |
| DRJIT_INLINE Derived mul_(Ref a) const { return vmulq_f64(m, a.m); } | ||
| DRJIT_INLINE Derived div_(Ref a) const { return vdivq_f64(m, a.m); } | ||
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| #if defined(ENOKI_ARM_FMA) |
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| #if defined(ENOKI_ARM_FMA) | |
| #if defined(DRJIT_ARM_FMA) |
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Hi all -- sorry for the inactivity. The upcoming rewrite ( |
| #include <drjit/half.h> | ||
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| NAMESPACE_BEGIN(drjit) | ||
| DRJIT_PACKET_DECLARE(16) |
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This change was needed to build for android32:
| DRJIT_PACKET_DECLARE(16) | |
| DRJIT_PACKET_DECLARE_COND(16, enable_if_t<(std::is_same_v<Type, float>)>) | |
| DRJIT_PACKET_DECLARE_COND(16, enable_if_int32_t<Type>) | |
| #if defined(DRJIT_ARM_64) | |
| DRJIT_PACKET_DECLARE_COND(16, enable_if_t<(std::is_same_v<Type, double>)>) | |
| DRJIT_PACKET_DECLARE_COND(16, enable_if_int64_t<Type>) | |
| #endif |
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The changes on |
Adding overloads for a neon intrinsics backend. The code is a ported version of the backend from the enoki repo. Tested via unit tests on an M1 mac. See also #63.
I had to add some "hacky" changes to make sure all tests compile and run. I'm happy to incorporate better ways to fix those issues:
changing the seed for the random generator in
validate_horizontalintest.hThis is because
assert_closedoesn't really work for floats ifresult_refis0andresultis something like1e-7. I was hitting exactly that case on my system. Changing the seed doesn't fix it it just avoids it.Adding
<ostream>tohalf.h, and including half inpacket_neon.hThis is just so
halfis defined inpacket_neonwhen the conversion is instantiated.half.halso includes an operator overload for ostreams so this needs to be defined as well.