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SIMD Friendly Math and Noise refinements to work inside SIMD loops #1108

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merged 4 commits into from
Feb 14, 2020
Merged

SIMD Friendly Math and Noise refinements to work inside SIMD loops #1108

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65ab677
Introduce sfm (SIMD Friend Math) namespace with versions of math func…
AlexMWells Jan 31, 2020
fc603a2
Fixed warning error: suggest parentheses around comparison in operand…
AlexMWells Jan 31, 2020
a3aa137
Fixed typo bug when using C++17
AlexMWells Jan 31, 2020
389d5f1
Added missing OSL_HOSTDEVICE to many noise and sfm functions to enabl…
AlexMWells Feb 12, 2020
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27 changes: 27 additions & 0 deletions src/include/OSL/oslconfig.h
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,9 @@ namespace pvt {

template<int EndBeforeT>
using make_int_sequence = std::make_integer_sequence<int, EndBeforeT>;

template<bool... BoolListT >
using bool_sequence = std::integer_sequence<bool, BoolListT... >;
#else
// std::integer_sequence requires c++14 library support,
// we have our own version here in case the environment is c++14 compiler
Expand All @@ -174,7 +177,31 @@ namespace pvt {

template<int EndBeforeT>
using make_int_sequence = typename int_sequence_generator<0, EndBeforeT, int_sequence<> >::type;

template<bool... BoolListT >
struct bool_sequence
{
};
#endif

#if (OSL_CPLUSPLUS_VERSION >= 17)
template<class... ListT>
using conjunction = std::conjunction<ListT...>;
#else
template<class... ListT>
using conjunction = std::is_same<bool_sequence<true,ListT::value...>, bool_sequence<ListT::value..., true>>;
#endif

// We need the SFINAE type to be different for
// enable_if_type from disable_if_type so that we can apply both to
// the same template signature to avoid
// "error: invalid redeclaration of member function template"
// NOTE: std::enable_if_t is a c++14 library feature, our baseline
// and we wish to remain compatible with c++11 header libraries.
// Also we are using std::true_type vs. void as the default type
template <bool TestT, typename TypeT = std::true_type>
using enable_if_type = typename std::enable_if<TestT, TypeT>::type;

} // namespace pvt

// Instead of relying on compiler loop unrolling, we can statically call functor
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