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Merge pull request #2522 from dneto0/intlog2

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Add IntLog2 and use it
This commit is contained in:
Greg Fischer 2021-04-14 15:16:04 -06:00 • committed by GitHub
commit e7e4a8eecb
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4 changed files with 179 additions and 8 deletions
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9
glslang/MachineIndependent/ParseHelper.cpp
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@ -5602,14 +5602,7 @@ void TParseContext::setLayoutQualifier(const TSourceLoc& loc, TPublicType& publi
if (! IsPow2(value))
error(loc, "must be a power of 2", "buffer_reference_align", "");
else
#ifdef __ANDROID__
// Android NDK r15c tageting ABI 15 doesn't have full support for C++11
// (no std::exp2/log2). ::exp2 is available from C99 but ::log2 isn't
// available up until ABI 18 so we use the mathematical equivalent form
publicType.qualifier.layoutBufferReferenceAlign = (unsigned int)(std::log(value) / std::log(2.0));
#else
publicType.qualifier.layoutBufferReferenceAlign = (unsigned int)std::log2(value);
#endif
publicType.qualifier.layoutBufferReferenceAlign = IntLog2(value);
if (nonLiteral)
error(loc, "needs a literal integer", "buffer_reference_align", "");
return;