Revision: 334
Author: bardtx
Date: 2006-06-05 20:51:53 -0700 (Mon, 05 Jun 2006)
ViewCVS: http://svn.sourceforge.net/cadcdev/?rev=334&view=rev
Log Message:
-----------
tiki: Add (commented out) support for DC frame rate limiting
Modified Paths:
--------------
tiki/dc/src/platgl.cpp
Modified: tiki/dc/src/platgl.cpp
===================================================================
--- tiki/dc/src/platgl.cpp 2006-06-06 03:51:23 UTC (rev 333)
+++ tiki/dc/src/platgl.cpp 2006-06-06 03:51:53 UTC (rev 334)
@@ -15,6 +15,11 @@
using namespace Tiki;
+static struct timeval lastFrame = { 0,0 };
+static int targetFrameRate = 60;
+static uint64 firstFrame = 0;
+static uint64 frameCnt = 0, totalFrameCnt = 0;
+
float Tiki::GL::Frame::getFrameRate() {
pvr_stats_t stats;
pvr_get_stats(&stats);
@@ -22,12 +27,41 @@
}
void Tiki::GL::Frame::setFrameRateLimit(int rate) {
- (void)(rate);
+ targetFrameRate = rate;
}
extern "C" {
void tiki_wait_if_needed() {
+#if 0
+ // Every so often we should reset the frame counters, to avoid
+ // having a super long term averaging effect.
+ if (frameCnt >= 500) {
+ firstFrame = 0;
+ frameCnt = 0;
+ }
+
+ // Update frame counters.
+ if (!firstFrame)
+ firstFrame = Tiki::Time::gettime();
+ frameCnt++;
+ totalFrameCnt++;
+
+ if (lastFrame.tv_sec == 0) {
+ gettimeofday(&lastFrame, NULL);
+ return;
+ }
+
+ struct timeval now;
+ gettimeofday(&now, NULL);
+ long long nowu = ((long long)now.tv_sec) * 1000 * 1000 + now.tv_usec;
+ long long lastu = ((long long)lastFrame.tv_sec) * 1000 * 1000 + lastFrame.tv_usec;
+ long long diffu = nowu - lastu;
+ if (diffu < (1000*1000 / targetFrameRate)) {
+ Time::sleep((1000*1000 / targetFrameRate) - diffu);
+ }
+ gettimeofday(&lastFrame, NULL);
+#endif
pvr_wait_ready();
}
This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.
|
