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nvLFCreset.cpp
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nvLFCreset.cpp
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// nvLFCreset.cpp : Defines the entry point for the application.
//
#define NOMINMAX
#include "windows.h"
#include "D3dkmthk.h"
#include "framework.h"
#include "chrono"
#include "NVAPI/nvapi.h"
#include "nvLFCreset.h"
#include "thread"
using namespace std;
using namespace chrono;
/*variables*/
UINT WM_TASKBAR = 0;
HWND Hwnd;
HMENU Hmenu;
NOTIFYICONDATA notifyIconData;
HANDLE hTimer = NULL;
LARGE_INTEGER liDueTime;
NvU32 displayID;
HANDLE hComm;
ULONG currentRes;
extern "C" NTSYSAPI NTSTATUS NTAPI NtSetTimerResolution(ULONG DesiredResolution, BOOLEAN SetResolution, PULONG CurrentResolution);
TCHAR szTIP[64] = TEXT("Prevents low framerate events from triggering sticky LFC");
char szClassName[] = "nvLFCreset";
/*procedures */
LRESULT CALLBACK WindowProcedure(HWND, UINT, WPARAM, LPARAM);
void minimize();
void restore();
void InitNotifyIconData();
//get DisplayID for primary monitor thanks Kaldaien
NvU32
NvAPI_GetDefaultDisplayId(void)
{
static NvU32 default_display_id =
std::numeric_limits <NvU32>::max();
if (default_display_id != std::numeric_limits <NvU32>::max())
return default_display_id;
NvU32 gpuCount = 0;
NvPhysicalGpuHandle ahGPU[NVAPI_MAX_PHYSICAL_GPUS] = { };
if (NVAPI_OK == NvAPI_EnumPhysicalGPUs(ahGPU, &gpuCount))
{
for (NvU32 i = 0; i < gpuCount; ++i)
{
NvU32 displayIdCount = 16;
NvU32 flags = 0;
NV_GPU_DISPLAYIDS
displayIdArray[16] = { };
displayIdArray[0].version = NV_GPU_DISPLAYIDS_VER;
// Query list of displays connected to this GPU
if (NVAPI_OK == NvAPI_GPU_GetConnectedDisplayIds(
ahGPU[i], displayIdArray,
&displayIdCount, flags))
{
if (displayIdArray[0].isActive)
{
default_display_id = displayIdArray[0].displayId;
break;
}
}
}
}
return 0;
}
void disableFrameSplitting() {
NV_SET_ADAPTIVE_SYNC_DATA
setAdaptiveSync;
ZeroMemory(&setAdaptiveSync, sizeof(NV_SET_ADAPTIVE_SYNC_DATA));
setAdaptiveSync.version = NV_SET_ADAPTIVE_SYNC_DATA_VER;
setAdaptiveSync.bDisableFrameSplitting = 1;
NvAPI_DISP_SetAdaptiveSyncData(displayID, &setAdaptiveSync);
}
void disableAdaptiveSync() {
NV_SET_ADAPTIVE_SYNC_DATA
setAdaptiveSync;
ZeroMemory(&setAdaptiveSync, sizeof(NV_SET_ADAPTIVE_SYNC_DATA));
setAdaptiveSync.version = NV_SET_ADAPTIVE_SYNC_DATA_VER;
setAdaptiveSync.bDisableAdaptiveSync = 1;
NvAPI_DISP_SetAdaptiveSyncData(displayID, &setAdaptiveSync);
}
void
vblankTimeout()
{
while (1) {
WaitForSingleObject(hTimer, INFINITE);
disableFrameSplitting();
disableAdaptiveSync();
//EscapeCommFunction(hComm, SETRTS);
//EscapeCommFunction(hComm, CLRRTS);
}
}
int WINAPI WinMain(HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
/* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
WM_TASKBAR = RegisterWindowMessageA("TaskbarCreated");
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof(WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(ICO1));
wincl.hIconSm = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(ICO1));
wincl.hCursor = LoadCursor(NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
wincl.hbrBackground = (HBRUSH)(CreateSolidBrush(RGB(45, 45, 48)));
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx(&wincl))
return 0;
/* The class is registered, let's create the program*/
Hwnd = CreateWindowEx(
0, /* Extended possibilites for variation */
szClassName, /* Classname */
szClassName, /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/*Initialize the NOTIFYICONDATA structure only once*/
InitNotifyIconData();
/* Make the window visible on the screen */
ShowWindow(Hwnd, SW_HIDE); //show window hidden with taskbar icon on startup
SetForegroundWindow(Hwnd);
hComm = CreateFileA("com1", GENERIC_READ | GENERIC_WRITE,
0,
0,
OPEN_EXISTING,
NULL,
0);
displayID = NvAPI_GetDefaultDisplayId(); //get the DisplayID of the primary monitor
displayID = NvAPI_GetDefaultDisplayId();
displayID = NvAPI_GetDefaultDisplayId();
// Setting up to do V-sync. Guidance came from:
// https://www.vsynctester.com/firefoxisbroken.html
// https://gist.github.com/anonymous/4397e4909c524c939bee#file-gistfile1-txt-L3
D3DKMT_WAITFORVERTICALBLANKEVENT we;
D3DKMT_OPENADAPTERFROMHDC oa;
oa.hDc = GetDC(Hwnd);
NTSTATUS result = D3DKMTOpenAdapterFromHdc(&oa);
if (result == STATUS_INVALID_PARAMETER) {
MessageBox(NULL, "D3DKMTOpenAdapterFromHdc function received an invalid parameter.", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
else if (result == STATUS_NO_MEMORY) {
MessageBox(NULL, "D3DKMTOpenAdapterFromHdc function, kernel ran out of memory.", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
we.hAdapter = oa.hAdapter;
we.hDevice = 0;
we.VidPnSourceId = oa.VidPnSourceId;
NtSetTimerResolution(5000, TRUE, ¤tRes); //undocumented way to get 0.5ms timer resolution
liDueTime.QuadPart = -280000LL; //vblank timeout time
hTimer = CreateWaitableTimer(NULL, TRUE, NULL);
thread t1(vblankTimeout); //create thread with waitable timer
while (WM_QUIT)
{
NTSTATUS status = D3DKMTWaitForVerticalBlankEvent(&we); //wait for vertical blank
SetWaitableTimer(hTimer, &liDueTime, 0, NULL, NULL, 0); //reset vblank timeout
while (PeekMessage(&messages, NULL, 0, 0, PM_REMOVE))
{
if (messages.message == WM_QUIT)
return TRUE;
TranslateMessage(&messages);
DispatchMessage(&messages);
}
}
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == WM_TASKBAR && !IsWindowVisible(Hwnd))
{
minimize();
return 0;
}
switch (message) /* handle the messages */
{
case WM_ACTIVATE:
Shell_NotifyIcon(NIM_ADD, ¬ifyIconData);
break;
case WM_CREATE:
ShowWindow(Hwnd, SW_HIDE);
Hmenu = CreatePopupMenu();
AppendMenu(Hmenu, MF_STRING, ID_TRAY_EXIT, TEXT("Quit"));
break;
case WM_SYSCOMMAND:
/*In WM_SYSCOMMAND messages, the four low-order bits of the wParam parameter
are used internally by the system. To obtain the correct result when testing the value of wParam,
an application must combine the value 0xFFF0 with the wParam value by using the bitwise AND operator.*/
switch (wParam & 0xFFF0)
{
case SC_MINIMIZE:
case SC_CLOSE:
minimize();
return 0;
break;
}
break;
// Our user defined WM_SYSICON message.
case WM_SYSICON:
{
switch (wParam)
{
case ID_TRAY_APP_ICON:
SetForegroundWindow(Hwnd);
break;
}
if (lParam == WM_LBUTTONUP)
{
restore();
}
else if (lParam == WM_RBUTTONDOWN)
{
// Get current mouse position.
POINT curPoint;
GetCursorPos(&curPoint);
SetForegroundWindow(Hwnd);
// TrackPopupMenu blocks the app until TrackPopupMenu returns
UINT clicked = TrackPopupMenu(Hmenu, TPM_RETURNCMD | TPM_NONOTIFY, curPoint.x, curPoint.y, 0, hwnd, NULL);
SendMessage(hwnd, WM_NULL, 0, 0); // send benign message to window to make sure the menu goes away.
if (clicked == ID_TRAY_EXIT)
{
// quit the application.
Shell_NotifyIcon(NIM_DELETE, ¬ifyIconData);
PostQuitMessage(0);
}
}
}
break;
// intercept the hittest message..
case WM_NCHITTEST:
{
UINT uHitTest = DefWindowProc(hwnd, WM_NCHITTEST, wParam, lParam);
if (uHitTest == HTCLIENT)
return HTCAPTION;
else
return uHitTest;
}
case WM_CLOSE:
minimize();
return 0;
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
void minimize()
{
// hide the main window
ShowWindow(Hwnd, SW_HIDE);
}
void restore()
{
ShowWindow(Hwnd, SW_SHOW);
}
void InitNotifyIconData()
{
memset(¬ifyIconData, 0, sizeof(NOTIFYICONDATA));
notifyIconData.cbSize = sizeof(NOTIFYICONDATA);
notifyIconData.hWnd = Hwnd;
notifyIconData.uID = ID_TRAY_APP_ICON;
notifyIconData.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
notifyIconData.uCallbackMessage = WM_SYSICON; //Set up our invented Windows Message
notifyIconData.hIcon = (HICON)LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(ICO1));
strncpy_s(notifyIconData.szTip, szTIP, sizeof(szTIP));
}