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Fifo: Rewrite SyncGpu

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The new implementation has 3 options:
 SyncGpuMaxDistance
 SyncGpuMinDistance
 SyncGpuOverclock

The MaxDistance controlls how many CPU cycles the CPU is allowed to be in front
of the GPU. Too low values will slow down extremly, too high values are as
unsynchronized and half of the games will crash.
The -MinDistance (negative) set how many cycles the GPU is allowed to be in
front of the CPU. As we are used to emulate an infinitiv fast GPU, this may be
set to any high (negative) number.

The last parameter is to hack a faster (>1.0) or slower(<1.0) GPU. As we don't
emulate GPU timing very well (eg skip the timings of the pixel stage completely),
an overclock factor of ~0.5 is often much more accurate than 1.0
This commit is contained in:
degasus
2015-06-03 23:21:46 +02:00
parent 5a0daef7f0
commit d31bed8b79
12 changed files with 126 additions and 110 deletions
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9
Source/Core/VideoCommon/CommandProcessor.h
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@ -121,9 +121,6 @@ union UCPClearReg
UCPClearReg(u16 _hex) {Hex = _hex; }
};
// Can be any number, low enough to not be below the number of clocks executed by the GPU per CP_PERIOD
const static u32 m_cpClockOrigin = 200000;
// Init
void Init();
void Shutdown();
@ -146,10 +143,4 @@ void SetCpControlRegister();
void SetCpStatusRegister();
void ProcessFifoEvents();
void Update();
u32 GetVITicks();
void SetVITicks(u32 ticks);
void DecrementVITicks(u32 ticks);
} // namespace CommandProcessor