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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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4
Source/Core/VideoCommon/MainBase.cpp
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@ -245,9 +245,9 @@ void VideoBackendHardware::Video_GatherPipeBursted()
CommandProcessor::GatherPipeBursted();
}
void VideoBackendHardware::Video_Sync()
int VideoBackendHardware::Video_Sync(int ticks)
{
FlushGpu();
return Fifo_Update(ticks);
}
void VideoBackendHardware::RegisterCPMMIO(MMIO::Mapping* mmio, u32 base)