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rsx: Minor rsx::ceil_log2 bugfix

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Eladash
2020-08-13 23:09:51 +03:00
committed by Ivan
parent 995cb8125e
commit 853e2b90a3
1 changed files with 4 additions and 5 deletions
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rpcs3/Emu/RSX/rsx_utils.h
+4 -5
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@@ -245,18 +245,17 @@ namespace rsx
} }
} }
// static constexpr u32 floor_log2(u32 value)
static inline u32 floor_log2(u32 value)
{ {
return value <= 1 ? 0 : std::countl_zero(value) ^ 31; return value <= 1 ? 0 : std::countl_zero(value) ^ 31;
} }
static inline u32 ceil_log2(u32 value) static constexpr u32 ceil_log2(u32 value)
{ {
return value <= 1 ? 0 : std::countl_zero((value - 1) << 1) ^ 31; return floor_log2(value) + u32{!!(value & (value - 1))};
} }
static inline u32 next_pow2(u32 x) static constexpr u32 next_pow2(u32 x)
{ {
if (x <= 2) return x; if (x <= 2) return x;