X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=sidebyside;f=src%2F3dengfx%2Fsrc%2Fcommon%2Ffps_counter.c;fp=src%2F3dengfx%2Fsrc%2Fcommon%2Ffps_counter.c;h=48aeef0b6b74d063c244700ce783a3f01cc44a4f;hb=6e23259dbabaeb1711a2a5ca25b9cb421f693759;hp=0000000000000000000000000000000000000000;hpb=fe068fa879814784c45e0cb2e65dac489e8f5594;p=summerhack

diff --git a/src/3dengfx/src/common/fps_counter.c b/src/3dengfx/src/common/fps_counter.c
new file mode 100644
index 0000000..48aeef0
--- /dev/null
+++ b/src/3dengfx/src/common/fps_counter.c
@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include "fps_counter.h"
+
+void fps_start(fps_counter *fpsc, unsigned long time, unsigned long sample_interval) {
+	fpsc->sample_interval = sample_interval;
+	fpsc->sample_start_time = time;
+	fpsc->frame_count = 0;
+	fpsc->fps = 0.0f;
+}
+
+int fps_frame_proc(fps_counter *fpsc, unsigned long time) {
+	if(time - fpsc->sample_start_time < fpsc->sample_interval) {
+		fpsc->frame_count++;
+		return 0;
+	} else {
+		fpsc->fps = (float)fpsc->frame_count / ((float)fpsc->sample_interval / 1000.0f);
+
+		fpsc->sample_start_time = time;
+		fpsc->frame_count = 0;
+		return 1;
+	}
+}
+
+/* changed it to a macro, see header */
+/*
+float fps_get_frame_rate(fps_counter *fpsc) {
+	return fpsc->fps;
+}
+*/
+
+const char *fps_get_frame_rate_str(fps_counter *fpsc) {
+	static char str[32];
+	sprintf(str, "%.1f", fpsc->fps);
+	return str;
+}