JNGL
Easy to use cross-platform 2D game library
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GpuTimer.hpp
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1// Copyright 2026 Jan Niklas Hasse <jhasse@bixense.com>
2// For conditions of distribution and use, see copyright notice in LICENSE.txt
5#pragma once
6
7#include <chrono>
8#include <memory>
9#include <optional>
10
11namespace jngl {
12
28class GpuTimer {
29public:
30 GpuTimer();
31 ~GpuTimer();
32 GpuTimer(const GpuTimer&) = delete;
33 GpuTimer& operator=(const GpuTimer&) = delete;
34 GpuTimer(GpuTimer&&) noexcept;
35 GpuTimer& operator=(GpuTimer&&) noexcept;
36
38 static bool isSupported();
39
42 void start();
43
45 void stop();
46
49 std::optional<std::chrono::nanoseconds> poll();
50
51private:
52 struct Impl;
53 std::unique_ptr<Impl> impl;
54};
55
56} // namespace jngl
jngl::GpuTimer
Measures how long the GPU takes for what's drawn between start() and stop(), e.g.
Definition GpuTimer.hpp:28
jngl::GpuTimer::start
void start()
Starts measuring what's drawn from now on.
jngl::GpuTimer::stop
void stop()
Stops measuring, for poll() to return how long the GPU took once that's known.
jngl::GpuTimer::poll
std::optional< std::chrono::nanoseconds > poll()
The oldest measurement that has come in since the last call, in the order of stop(),...
jngl::GpuTimer::isSupported
static bool isSupported()
Whether the GPU's time can be measured here.
jngl
JNGL's main namespace.
Definition Achievement.hpp:10