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psx - apply fresh GTE division bugfix

This commit is contained in:
zeromus 2015-01-12 07:32:14 +00:00
parent 288914b668
commit 2a28f2b414
1 changed files with 2 additions and 2 deletions
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4
psx/octoshock/psx/gte.cpp
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@ -153,7 +153,7 @@ static INLINE uint8 Sat5(int16 cc)
// Newton-Raphson division table. (Initialized at startup; do NOT save in save states!)
//
static uint8 DivTable[0x100 + 1];
static INLINE int32 CalcRecip(uint16 divisor)
static INLINE uint32 CalcRecip(uint16 divisor)
{
int32 x = (0x101 + DivTable[(((divisor & 0x7FFF) + 0x40) >> 7)]);
int32 tmp = (((int32)divisor * -x) + 0x80) >> 8;
@ -997,7 +997,7 @@ static INLINE uint32 Divide(uint32 dividend, uint32 divisor)
dividend <<= shift_bias;
divisor <<= shift_bias;
return ((int64)dividend * CalcRecip(divisor | 0x8000) + 32768) >> 16;
return std::min<uint32>(0x1FFFF, ((uint64)dividend * CalcRecip(divisor | 0x8000) + 32768) >> 16);
}
else
{