From c3c55efc986738ff9336598057e3ba8bf695fb49 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 27 Jun 2019 22:07:49 +0200
Subject: Add pugl_test option to continuously animate and report FPS
---
pugl_test.c | 49 ++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 42 insertions(+), 7 deletions(-)
diff --git a/pugl_test.c b/pugl_test.c
index 781a172..6d5c5c3 100644
--- a/pugl_test.c
+++ b/pugl_test.c
@@ -28,10 +28,12 @@
#include <stdio.h>
#include <string.h>
-static int quit = 0;
-static float xAngle = 0.0f;
-static float yAngle = 0.0f;
-static float dist = 10.0f;
+static int quit = 0;
+static float xAngle = 0.0f;
+static float yAngle = 0.0f;
+static float dist = 10.0f;
+static float lastMouseX = 0.0;
+static float lastMouseY = 0.0;
static const float cubeVertices[] = {
-1.0f, -1.0f, -1.0f,
@@ -173,8 +175,10 @@ onEvent(PuglView* view, const PuglEvent* event)
event->key.utf8, event->key.filter ? " (filtered)" : "");
break;
case PUGL_MOTION_NOTIFY:
- xAngle = -(int)event->motion.x % 360;
- yAngle = (int)event->motion.y % 360;
+ xAngle = fmodf(xAngle + (event->motion.x - lastMouseX), 360.0f);
+ yAngle = fmodf(yAngle + (event->motion.y - lastMouseY), 360.0f);
+ lastMouseX = event->motion.x;
+ lastMouseY = event->motion.y;
puglPostRedisplay(view);
break;
case PUGL_BUTTON_PRESS:
@@ -216,16 +220,20 @@ main(int argc, char** argv)
{
int samples = 0;
int doubleBuffer = PUGL_FALSE;
+ bool continuous = false;
bool ignoreKeyRepeat = false;
bool resizable = false;
for (int i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "-a")) {
samples = 4;
+ } else if (!strcmp(argv[i], "-c")) {
+ continuous = true;
} else if (!strcmp(argv[i], "-d")) {
doubleBuffer = PUGL_TRUE;
} else if (!strcmp(argv[i], "-h")) {
printf("USAGE: %s [OPTIONS]...\n\n"
" -a Enable anti-aliasing\n"
+ " -c Continuously animate and draw\n"
" -d Enable double-buffering\n"
" -h Display this help\n"
" -i Ignore key repeat\n"
@@ -266,9 +274,36 @@ main(int argc, char** argv)
puglShowWindow(view);
+ const double startTime = puglGetTime(view);
+ double lastTime = startTime;
+ double lastReportTime = startTime;
+ unsigned frames = 0;
+
while (!quit) {
- puglWaitForEvent(view);
+ const double thisTime = puglGetTime(view);
+
+ if (continuous) {
+ xAngle = fmodf(xAngle + (thisTime - lastTime) * 100.0f, 360.0f);
+ yAngle = fmodf(yAngle + (thisTime - lastTime) * 100.0f, 360.0f);
+ puglPostRedisplay(view);
+ } else {
+ puglWaitForEvent(view);
+ }
+
puglProcessEvents(view);
+
+ if (continuous && thisTime > lastReportTime + 5) {
+ const double fps = frames / (thisTime - lastReportTime);
+ fprintf(stderr,
+ "%u frames in %.0f seconds = %.3f FPS\n",
+ frames, thisTime - lastReportTime, fps);
+
+ lastReportTime = thisTime;
+ frames = 0;
+ }
+
+ lastTime = thisTime;
+ ++frames;
}
puglDestroy(view);
--
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