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GPU/HW: Don't allow adaptive downsampling at non-pow2 scales

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This commit is contained in:
Connor McLaughlin
2021-06-25 00:19:14 +10:00
parent 2fbfd53d51
commit defce709da
2 changed files with 28 additions and 3 deletions
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13
src/common/align.h
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@ -36,4 +36,17 @@ constexpr bool IsPow2(T value)
{
return (value & (value - 1)) == 0;
}
template<typename T>
constexpr T PreviousPow2(T value)
{
if (value == static_cast<T>(0))
return 0;
value |= (value >> 1);
value |= (value >> 2);
value |= (value >> 4);
value |= (value >> 8);
value |= (value >> 16);
return value - (value >> 1);
}
} // namespace Common