Tengo una variable int llamada FrameCount la cual, muestra un valor incorrecto al menos que haga std::cout<<FrameCount<<std::endl antes del if ((currentTime - t0Value) > theTimeInterval).
Código:
Código:
void Engine::calcFPS(double theTimeInterval)
{
static double fps = 0.0; // Set the initial FPS value to 0.0
// Get the current time in seconds since the program started (non-static, so executed every time)
double currentTime = glfwGetTime();
// Ensure the time interval between FPS checks is sane (low cap = 0.1s, high-cap = 10.0s)
// Negative numbers are invalid, 10 fps checks per second at most, 1 every 10 secs at least.
if (theTimeInterval < 0.1)
{
theTimeInterval = 0.1;
}
if (theTimeInterval > 10.0)
{
theTimeInterval = 10.0;
}
std::cout<<FrameCount<<std::endl; // Si no hago esto, la variable toma valores incorrectos
// Calculate and display the FPS every specified time interval
if ((currentTime - t0Value) > theTimeInterval)
{
// Calculate the FPS as the number of frames divided by the interval in seconds
fps = FrameCount/(currentTime - t0Value);
// Convert the fps value into a string using an output stringstream
std::ostringstream stream;
stream << fps;
std::string fpsString = stream.str();
// Append the FPS value to the window title details
theWindowTitle = " | FPS: " + fpsString;
// Convert the new window title to a c_str and set it
const char* pszConstString = theWindowTitle.c_str();
glfwSetWindowTitle(pszConstString);
// Reset the FPS frame counter and set the initial time to be now
FrameCount = 0;
t0Value = glfwGetTime();
}
else // FPS calculation time interval hasn't elapsed yet? Simply increment the FPS frame counter
{
FrameCount++;
}
}
