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Fifo: only sleep once within every ms of emulated time

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This commit is contained in:
degasus 2015-03-13 23:36:31 +01:00
parent b020ae1c5d
commit d2c62b1744
4 changed files with 15 additions and 3 deletions
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3
Source/Core/Core/HW/SystemTimers.cpp
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@ -199,6 +199,9 @@ static void PatchEngineCallback(u64 userdata, int cyclesLate)
static void ThrottleCallback(u64 last_time, int cyclesLate) static void ThrottleCallback(u64 last_time, int cyclesLate)
{ {
// Allow the GPU thread to sleep. Setting this flag here limits the wakeups to 1 kHz.
CommandProcessor::s_gpuMaySleep.Set();
u32 time = Common::Timer::GetTimeMs(); u32 time = Common::Timer::GetTimeMs();
int diff = (u32)last_time - time; int diff = (u32)last_time - time;

2
Source/Core/VideoCommon/CommandProcessor.cpp
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@ -45,6 +45,8 @@ volatile bool interruptWaiting= false;
volatile bool interruptTokenWaiting = false; volatile bool interruptTokenWaiting = false;
volatile bool interruptFinishWaiting = false; volatile bool interruptFinishWaiting = false;
Common::Flag s_gpuMaySleep;
volatile u32 VITicks = CommandProcessor::m_cpClockOrigin; volatile u32 VITicks = CommandProcessor::m_cpClockOrigin;
static bool IsOnThread() static bool IsOnThread()

2
Source/Core/VideoCommon/CommandProcessor.h
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@ -5,6 +5,7 @@
#pragma once #pragma once
#include "Common/CommonTypes.h" #include "Common/CommonTypes.h"
#include "Common/Flag.h"
#include "VideoCommon/VideoBackendBase.h" #include "VideoCommon/VideoBackendBase.h"
class PointerWrap; class PointerWrap;
@ -21,6 +22,7 @@ extern volatile bool interruptSet;
extern volatile bool interruptWaiting; extern volatile bool interruptWaiting;
extern volatile bool interruptTokenWaiting; extern volatile bool interruptTokenWaiting;
extern volatile bool interruptFinishWaiting; extern volatile bool interruptFinishWaiting;
extern Common::Flag s_gpuMaySleep;
// internal hardware addresses // internal hardware addresses
enum enum

7
Source/Core/VideoCommon/Fifo.cpp
View File

@ -369,9 +369,13 @@ void RunGpuLoop()
{ {
if (s_gpu_is_running.IsSet()) if (s_gpu_is_running.IsSet())
{ {
// reset the atomic flag. But as the CPU thread might have pushed some new data, we have to rerun the GPU loop if (CommandProcessor::s_gpuMaySleep.IsSet())
{
// Reset the atomic flag. But as the CPU thread might have pushed some new data, we have to rerun the GPU loop
s_gpu_is_pending.Set(); s_gpu_is_pending.Set();
s_gpu_is_running.Clear(); s_gpu_is_running.Clear();
CommandProcessor::s_gpuMaySleep.Clear();
}
} }
else else
{ {
@ -403,6 +407,7 @@ void FlushGpu()
while (s_gpu_is_running.IsSet() || s_gpu_is_pending.IsSet()) while (s_gpu_is_running.IsSet() || s_gpu_is_pending.IsSet())
{ {
CommandProcessor::s_gpuMaySleep.Set();
s_gpu_done_event.Wait(); s_gpu_done_event.Wait();
} }
} }