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[host] windows: make D3DKMTSetProcessSchedulingPriorityClass global

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Testing shows that `D3DKMTSetProcessSchedulingPriorityClass` has a
positive performance impact for NvFBC as well as DXGI, as such always
try to boost the priority for the windows host.
This commit is contained in:
Geoffrey McRae 2021-07-10 12:27:30 +10:00
parent 041b95507d
commit 78b8e2a73c
2 changed files with 38 additions and 45 deletions
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45
host/platform/Windows/capture/DXGI/src/dxgi.c
View file

@ -37,18 +37,6 @@
#include "dxgi_extra.h"
typedef enum _D3DKMT_SCHEDULINGPRIORITYCLASS
{
D3DKMT_SCHEDULINGPRIORITYCLASS_IDLE,
D3DKMT_SCHEDULINGPRIORITYCLASS_BELOW_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_ABOVE_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_HIGH,
D3DKMT_SCHEDULINGPRIORITYCLASS_REALTIME
}
D3DKMT_SCHEDULINGPRIORITYCLASS;
typedef NTSTATUS WINAPI (*PD3DKMTSetProcessSchedulingPriorityClass)(HANDLE, D3DKMT_SCHEDULINGPRIORITYCLASS);
#define LOCKED(x) INTERLOCKED_SECTION(this->deviceContextLock, x)
enum TextureState
@ -433,39 +421,6 @@ static bool dxgi_init(void)
DEBUG_INFO("Capture Size : %u x %u", this->width, this->height);
DEBUG_INFO("AcquireLock : %s" , this->useAcquireLock ? "enabled" : "disabled");
// bump up our priority
{
HMODULE gdi32 = GetModuleHandleA("GDI32");
if (gdi32)
{
PD3DKMTSetProcessSchedulingPriorityClass fn =
(PD3DKMTSetProcessSchedulingPriorityClass)GetProcAddress(gdi32, "D3DKMTSetProcessSchedulingPriorityClass");
if (fn)
{
status = fn(GetCurrentProcess(), D3DKMT_SCHEDULINGPRIORITYCLASS_REALTIME);
if (FAILED(status))
{
DEBUG_WARN("Failed to set realtime GPU priority.");
DEBUG_INFO("This is not a failure, please do not report this as an issue.");
DEBUG_INFO("To fix this, install and run the Looking Glass host as a service.");
DEBUG_INFO("looking-glass-host.exe InstallService");
}
}
}
IDXGIDevice * dxgi;
status = ID3D11Device_QueryInterface(this->device, &IID_IDXGIDevice, (void **)&dxgi);
if (FAILED(status))
{
DEBUG_WINERROR("failed to query DXGI interface from device", status);
goto fail;
}
IDXGIDevice_SetGPUThreadPriority(dxgi, 7);
IDXGIDevice_Release(dxgi);
}
// try to reduce the latency
{
IDXGIDevice1 * dxgi;

38
host/platform/Windows/src/platform.c
View file

@ -467,6 +467,41 @@ finish:
return result;
}
void boostPriority(void)
{
typedef enum _D3DKMT_SCHEDULINGPRIORITYCLASS
{
D3DKMT_SCHEDULINGPRIORITYCLASS_IDLE,
D3DKMT_SCHEDULINGPRIORITYCLASS_BELOW_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_ABOVE_NORMAL,
D3DKMT_SCHEDULINGPRIORITYCLASS_HIGH,
D3DKMT_SCHEDULINGPRIORITYCLASS_REALTIME
}
D3DKMT_SCHEDULINGPRIORITYCLASS;
typedef NTSTATUS WINAPI (*PD3DKMTSetProcessSchedulingPriorityClass)
(HANDLE, D3DKMT_SCHEDULINGPRIORITYCLASS);
HMODULE gdi32 = GetModuleHandleA("GDI32");
if (!gdi32)
return;
PD3DKMTSetProcessSchedulingPriorityClass fn =
(PD3DKMTSetProcessSchedulingPriorityClass)
GetProcAddress(gdi32, "D3DKMTSetProcessSchedulingPriorityClass");
if (!fn)
return;
if (FAILED(fn(GetCurrentProcess(), D3DKMT_SCHEDULINGPRIORITYCLASS_REALTIME)))
{
DEBUG_WARN("Failed to set realtime GPU priority.");
DEBUG_INFO("This is not a failure, please do not report this as an issue.");
DEBUG_INFO("To fix this, install and run the Looking Glass host as a service.");
DEBUG_INFO("looking-glass-host.exe InstallService");
}
}
bool app_init(void)
{
const char * logFile = option_get_string("os", "logFile" );
@ -490,6 +525,9 @@ bool app_init(void)
// get the performance frequency for spinlocks
QueryPerformanceFrequency(&app.perfFreq);
// try to boost the scheduler priority
boostPriority();
return true;
}