Monitorar FPS na tela, de código básico.

[Goten]

dentro de interface.h

class Interface
{
public:
	//FPS PRIMEIRO TESTE:
	int lastReport;
	int frameCount;
	int frameRate;
	char FPS_REAL[30];
	void UPDATE_FPS();
	void		guiMonitore();
private:
	
};
extern Interface gInterface;

em interface.cpp

void Interface::UPDATE_FPS(){
	gInterface.frameCount++;
	if (GetTickCount() - gInterface.lastReport >= 1000)
	{
		gInterface.frameRate = gInterface.frameCount / ((GetTickCount() - gInterface.lastReport) / 1000);
		sprintf(gInterface.FPS_REAL, "FPS: %d", gInterface.frameRate);
		gInterface.lastReport = GetTickCount();
		gInterface.frameCount = 0;
	}

	// ======================================================================
	if (this->MiniMapCheck() || this->CombinedChecks() )
	{
		return;
	}
	this->DrawFormat(eGold, 600, 5, 80, 1, gInterface.FPS_REAL);
}

void Interface::guiMonitore(){
	if (this->MiniMapCheck() || this->CombinedChecks() )
	{
		return;
	}
	pSetBlend(true);
	glColor4f((GLfloat)0.0, (GLfloat)0.0, (GLfloat)0.0, (float)0.8);
	pDrawBarForm(495.0, 0.0, 150.0, 20.0, 0.0f, 0);
	pGLSwitchBlend();
}

executar dentro de work()

gInterface.guiMonitore();
gInterface.UPDATE_FPS();

no main ao iniciar dentro da função principal

gInterface.lastReport = GetTickCount();
		gInterface.frameCount = 0;

Créditos:
takumi12