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More detailed FPS counter showing min/avg/max FPS and frametime values

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Code mainly by AI0867 from https://github.com/AI0867/wesnoth/tree/fps-info with monospacing and alignment applied by me.
This commit is contained in:
ln-zookeeper 2017-09-04 13:03:40 +03:00
parent 874ba1be7c
commit d9f673ad65
1 changed files with 9 additions and 2 deletions
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11
src/display.cpp
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@ -54,6 +54,7 @@
#include <SDL_image.h>
#include <cmath>
#include <iomanip>
#ifdef _WIN32
#include <Windows.h>
@ -1365,7 +1366,11 @@ void display::update_display()
++frames;
const int sample_freq = 10;
if(frames == sample_freq) {
const int fps = 1000 / *std::max_element(frametimes_.begin(), frametimes_.end());
const auto minmax_it = std::minmax_element(frametimes_.begin(), frametimes_.end());
const unsigned render_avg = std::accumulate(frametimes_.begin(), frametimes_.end(), 0) / frametimes_.size();
const int avg_fps = 1000 / render_avg;
const int max_fps = 1000 / *minmax_it.first;
const int min_fps = 1000 / *minmax_it.second;
frames = 0;
if(fps_handle_ != 0) {
@ -1373,7 +1378,9 @@ void display::update_display()
fps_handle_ = 0;
}
std::ostringstream stream;
stream << "fps: " << fps;
stream << "<tt> min/avg/max</tt>\n";
stream << "<tt>FPS: " << std::setfill(' ') << std::setw(3) << min_fps << '/'<< std::setw(3) << avg_fps << '/' << std::setw(3) << max_fps << "</tt>\n";
stream << "<tt>Time: " << std::setfill(' ') << std::setw(3) << *minmax_it.first << '/' << std::setw(3) << render_avg << '/' << std::setw(3) << *minmax_it.second << " ms</tt>\n";
if (game_config::debug) {
stream << "\nhex: " << drawn_hexes_*1.0/sample_freq;
if (drawn_hexes_ != invalidated_hexes_)