1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// Copyright 2016 The Emscripten Authors. All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License. Both these licenses can be
// found in the LICENSE file.
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <emscripten.h>
int numFrames = 0;
void looper() {
static double frame0 = 0;
if (!frame0) frame0 = emscripten_get_now();
double start = emscripten_get_now();
++numFrames;
if (numFrames % 10 == 0) printf("Frame %d\n", numFrames);
if (numFrames == 100) {
double now = emscripten_get_now();
double msecsPerFrame = (now - frame0) / (numFrames-1); // Sub one to account for intervals vs endpoints
printf("Avg. msecs/frame: %f\n", msecsPerFrame);
emscripten_cancel_main_loop();
// Expecting to run extremely fast unthrottled, and certainly not bounded by
// vsync, so less than common 16.667 msecs per frame (this is assuming 60hz
// display)
exit((msecsPerFrame < 5) ? 0 : 1);
}
}
int main() {
emscripten_set_main_loop(looper, 1, 0);
emscripten_set_main_loop_timing(EM_TIMING_SETIMMEDIATE, 0);
return 99;
}
|
