X-Git-Url: https://git.ralfj.de/gltest.git/blobdiff_plain/a6ec94bcb6af26bc9b6483b89a8b2397a9c8bef9..141fa68c418105e1e60788f676cd7f6dcf9cbeb1:/gltest.cpp?ds=inline

diff --git a/gltest.cpp b/gltest.cpp
index ff413af..b9824a8 100644
--- a/gltest.cpp
+++ b/gltest.cpp
@@ -1,3 +1,21 @@
+/* gltest - small OpenGL tearing test program
+ * Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
+ *
+ * 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.
+ */
+
 // stdlib includes
 #include <time.h>
 #include <stdio.h>
@@ -45,15 +63,19 @@ static double getTime()
 	return tp.tv_sec + 1e-9 * tp.tv_nsec;
 }
 
-static void drawRect(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
+static void rectVertices(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
 {
-	glVertex2f(x1, y1); glVertex2f(x2, y1); glVertex2f(x2, y2); glVertex2f(x1, y2);
+	glVertex2f(x1, y1);
+	glVertex2f(x2, y1);
+	glVertex2f(x2, y2);
+	glVertex2f(x1, y2);
 }
 
 // the window
 class TearTestWindow : public GLWindow {
 public:
-	TearTestWindow(bool overdraw, bool copy) : GLWindow(XOpenDisplay(0), createGLBackend()), overdraw(overdraw), copy(copy), boxPos(0), boxDirection(1)
+	TearTestWindow(bool overdraw, bool copy, int sleep_time) : GLWindow(XOpenDisplay(0), createGLBackend()),
+		overdraw(overdraw), copy(copy), sleep_time(sleep_time), boxPos(0), boxDirection(1)
 	{}
 
 	void setSwapInterval(int i) {
@@ -137,7 +159,7 @@ protected:
 			// clear manually
 			glBegin(GL_QUADS);
 			glColor3f(0.0f, 0.0f, 0.0f);
-			drawRect(0, 0, 1, 1);
+			rectVertices(0, 0, 1, 1);
 			glEnd();
 		}
 		else {
@@ -147,8 +169,9 @@ protected:
 		profilerTick(stateDraw);
 		glBegin(GL_QUADS);
 		glColor3f(0.8f, 1.0f, 0.75f);
-		drawRect(boxPos, 0, boxPos+boxWidth, 1);
+		rectVertices(boxPos, 0, boxPos+boxWidth, 1);
 		glEnd();
+		usleep(sleep_time*1000);
 		//////////////////////////////////////////////
 		profilerTick(statePresent);
 		if (copy) {
@@ -178,9 +201,11 @@ protected:
 
 private:
 	bool overdraw, copy;
+	int sleep_time;
+	// animation control
 	double lastFrame;
 	GLfloat boxPos, boxDirection;
-	// FPS
+	// FPS, profiler
 	double lastDisplay, lastProfile;                 
 	int framect, curState;
 	double stateTime[numProfilerStates];
@@ -195,6 +220,7 @@ int main(int argc, char ** argv)
 		("swap-interval,i", po::value<int>(), "set swap interval")
 		("copy,c", "copy to front buffer (instead of performing a buffer swap)")
 		("overdraw,o", "overdraw previous image (instead of calling glClear)")
+		("sleep,s", po::value<int>()->default_value(0), "Number of milliseconds to sleap in each frame (in the drawing phase)")
 	;
 	po::variables_map vm;
 	po::store(po::parse_command_line(argc, argv, desc), vm);
@@ -206,7 +232,7 @@ int main(int argc, char ** argv)
 	}
 
 	// actual program
-	TearTestWindow w(vm.count("overdraw"), vm.count("copy"));
+	TearTestWindow w(vm.count("overdraw"), vm.count("copy"), vm["sleep"].as<int>());
 	w.open(800, 600);
 	if (vm.count("swap-interval"))
 		w.setSwapInterval(vm["swap-interval"].as<int>());