From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Wed, 8 Jan 2014 20:28:08 +0000 (+0100)
Subject: In the demo application, reset the FPS counter every hundred frames.
X-Git-Tag: 1.0~96
X-Git-Url: https://git.sesse.net/?p=movit;a=commitdiff_plain;h=b61cd4cf5535ecfd76d5c923ea7421a8282bf98b

In the demo application, reset the FPS counter every hundred frames.

Gives much, much better FPS counts for benchmarking.
---

diff --git a/demo.cpp b/demo.cpp
index 0083f68..cd9fe9f 100644
--- a/demo.cpp
+++ b/demo.cpp
@@ -303,6 +303,15 @@ int main(int argc, char **argv)
 		printf("%d frames in %.3f seconds = %.1f fps (%.1f ms/frame)\n",
 			frame, elapsed, frame / elapsed,
 			1e3 * elapsed / frame);
+
+		// Reset every 100 frames, so that local variations in frame times
+		// (especially for the first few frames, when the shaders are
+		// compiled etc.) don't make it hard to measure for the entire
+		// remaining duration of the program.
+		if (frame == 100) {
+			frame = 0;
+			start = now;
+		}
 #endif
 	}
 	return 0;