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authorJohannes Schickel2010-10-13 03:57:44 +0000
committerJohannes Schickel2010-10-13 03:57:44 +0000
commit75e8452b6e6a2bf4fb2f588aa00b428a60d873b5 (patch)
treef29541d55309487a94bd1d38e8b53bb3dde9aec6 /engines/sword25/gfx/framecounter.cpp
parent48ee83b88957dab86bc763e9ef21a70179fa8679 (diff)
parente9f50882ea5b6beeefa994040be9d3bab6a1f107 (diff)
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OPENGL: Merged from trunk, from rev 52105 to 53396.
This includes an rather hacky attempt to merge all the recent gp2x backend changes into the branch. I suppose the gp2x backend and probably all new backends, i.e. gph, dingux etc., might not compile anymore. Since I have no way of testing those it would be nice if porters could look into getting those up to speed in this branch. svn-id: r53399
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diff --git a/engines/sword25/gfx/framecounter.cpp b/engines/sword25/gfx/framecounter.cpp
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+/*
+ * This code is based on Broken Sword 2.5 engine
+ *
+ * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
+ *
+ * Licensed under GNU GPL v2
+ *
+ */
+
+#include "common/system.h"
+#include "sword25/gfx/framecounter.h"
+
+namespace Sword25 {
+
+Framecounter::Framecounter(int UpdateFrequency) :
+ m_FPS(0),
+ m_FPSCount(0),
+ m_LastUpdateTime(-1) {
+ SetUpdateFrequency(UpdateFrequency);
+}
+
+void Framecounter::Update() {
+ // Aktuellen Systemtimerstand auslesen
+ uint64_t Timer = g_system->getMillis() * 1000;
+
+ // Falls m_LastUpdateTime == -1 ist, wird der Frame-Counter zum ersten Mal aufgerufen und der aktuelle Systemtimer als erster
+ // Messzeitpunkt genommen.
+ if (m_LastUpdateTime == -1)
+ m_LastUpdateTime = Timer;
+ else {
+ // Die Anzahl der Frames im aktuellen Messzeitraum wird erhöht.
+ m_FPSCount++;
+
+ // Falls der Messzeitraum verstrichen ist, wird die durchschnittliche Framerate berechnet und ein neuer Messzeitraum begonnen.
+ if (Timer - m_LastUpdateTime >= m_UpdateDelay) {
+ m_FPS = static_cast<int>((1000000 * (uint64_t)m_FPSCount) / (Timer - m_LastUpdateTime));
+ m_LastUpdateTime = Timer;
+ m_FPSCount = 0;
+ }
+ }
+}
+
+} // End of namespace Sword25