Fifo: Rewrite SyncGpu

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

1 files changed, 0 insertions, 29 deletions

diff --git a/Source/Core/VideoCommon/CommandProcessor.cpp b/Source/Core/VideoCommon/CommandProcessor.cpp
index 88b16afe7e..e16484de4d 100644
--- a/Source/Core/VideoCommon/CommandProcessor.cpp
+++ b/Source/Core/VideoCommon/CommandProcessor.cpp
@@ -16,7 +16,6 @@
 #include "Core/HW/Memmap.h"
 #include "Core/HW/MMIO.h"
 #include "Core/HW/ProcessorInterface.h"
-#include "Core/HW/SystemTimers.h"
 #include "VideoCommon/CommandProcessor.h"
 #include "VideoCommon/Fifo.h"
 #include "VideoCommon/PixelEngine.h"
@@ -47,8 +46,6 @@ static std::atomic<bool> s_interrupt_waiting;
 static std::atomic<bool> s_interrupt_token_waiting;
 static std::atomic<bool> s_interrupt_finish_waiting;
 
-static std::atomic<u32> s_vi_ticks(CommandProcessor::m_cpClockOrigin);
-
 static bool IsOnThread()
 {
 	return SConfig::GetInstance().m_LocalCoreStartupParameter.bCPUThread;
@@ -546,30 +543,4 @@ void SetCpClearRegister()
 {
 }
 
-void Update()
-{
-	while (s_vi_ticks.load() > m_cpClockOrigin && fifo.isGpuReadingData && IsOnThread())
-		Common::YieldCPU();
-
-	if (fifo.isGpuReadingData)
-		s_vi_ticks.fetch_add(SystemTimers::GetTicksPerSecond() / 10000);
-
-	RunGpu();
-}
-
-u32 GetVITicks()
-{
-	return s_vi_ticks.load();
-}
-
-void SetVITicks(u32 ticks)
-{
-	s_vi_ticks.store(ticks);
-}
-
-void DecrementVITicks(u32 ticks)
-{
-	s_vi_ticks.fetch_sub(ticks);
-}
-
 } // end of namespace CommandProcessor