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[host] dxgi: boost GPU thread priority if possible

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This commit is contained in:
Geoffrey McRae 2020-08-07 19:44:00 +10:00
parent be7820303f
commit 977d7b277d
1 changed files with 30 additions and 0 deletions
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30
host/platform/Windows/capture/DXGI/src/dxgi.c
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@ -32,6 +32,18 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#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
@ -385,6 +397,24 @@ static bool dxgi_init()
// 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_INFO("Failed to set realtime GPU priority, this is not an error!");
DEBUG_INFO("To fix this run LG using the PsExec SysInternals tool from Microsoft.");
DEBUG_INFO("https://docs.microsoft.com/en-us/sysinternals/downloads/psexec");
}
}
}
IDXGIDevice * dxgi;
status = ID3D11Device_QueryInterface(this->device, &IID_IDXGIDevice, (void **)&dxgi);
if (FAILED(status))