From: Christian Pulvermacher <christian@hazel.(none)>
Date: Tue, 26 Oct 2010 22:49:25 +0000 (+0200)
Subject: add painting benchmark
X-Git-Tag: 0.7~11
X-Git-Url: https://vcs.maemo.org/git/?p=presencevnc;a=commitdiff_plain;h=8b08a50436ddbd2674b578718901e37e4332bdd9

add painting benchmark
---

diff --git a/test/painting.cpp b/test/painting.cpp
new file mode 100644
index 0000000..9214c0d
--- /dev/null
+++ b/test/painting.cpp
@@ -0,0 +1,132 @@
+#include <QtGui>
+#include <iostream>
+
+//use this rectangle in source image
+const int src_xoff = 15;
+const int src_yoff = 23;
+const int src_width = 600;
+const int src_height = 500;
+const QRect src_rect(src_xoff, src_yoff, src_width, src_height);
+
+
+class Widget : public QWidget {
+public:
+	Widget():
+		QWidget(0)
+	{
+		msecs = paints = mode = 0;
+		img = QImage("test.png");
+
+		QTimer *timer = new QTimer(this);
+		connect(timer, SIGNAL(timeout()),
+			this, SLOT(repaint()));
+		timer->start(150);
+
+	}
+protected:
+	virtual void paintEvent(QPaintEvent*);
+private:
+	QImage img;
+	int msecs, paints, mode;
+};
+
+void Widget::paintEvent(QPaintEvent*)
+{
+	QPainter painter(this);
+
+	QTime t;
+	t.start();
+
+	switch(mode) {
+//scaled (fit to window)
+	case 0: //this is how small updates in 0.6 are done
+		painter.drawImage(rect(),
+			img.copy(src_rect)
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+		break;
+	case 1: //fast transformation
+		painter.drawImage(rect(),
+			img.copy(src_rect)
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation));
+		break;
+	case 2: //tell drawImage() that no further scaling is required
+	//why different from 1?
+		painter.drawImage(rect().topLeft(),
+			img.copy(src_rect)
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+		break;
+	case 3: //avoid scaled()
+		painter.drawImage(rect(),
+			img.copy(src_rect));
+		break;
+	case 4: //avoid copy() and scaled()
+		painter.drawImage(rect(), img, src_rect);
+		break;
+
+// not scaled - repeat preceeding tests with dimensions that just happen to require no transformation
+// these are all comparable
+	case 5: //this is how small updates in 0.6 are done
+		painter.drawImage(rect(),
+			img.copy(rect())
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+		break;
+	case 6: //fast transformation
+		painter.drawImage(rect(),
+			img.copy(rect())
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation));
+		break;
+	case 7: //tell drawImage() that no further scaling is required
+		painter.drawImage(rect().topLeft(),
+			img.copy(rect())
+			.scaled(size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+		break;
+	case 8: //avoid scaled()
+		painter.drawImage(rect(),
+			img.copy(rect()));
+		break;
+	case 9: //avoid copy() and scaled()
+		painter.drawImage(rect(), img, rect());
+		break;
+//and a few extra
+	case 10:
+		painter.drawImage(rect().topLeft(), img, rect());
+		break;
+	case 11:
+		painter.drawImage(rect().topLeft(), img);
+		break;
+	case 12:
+		painter.drawImage(rect().topLeft(),
+			img.copy(rect()));
+		break;
+	case 13: //5 with KeepAspectRatio
+		painter.drawImage(rect(),
+			img.copy(rect())
+			.scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation));
+		break;
+	}
+
+	msecs += t.elapsed();
+	paints++;
+
+	const int paints_per_mode = 20;
+	const int num_modes = 14;
+
+	if(paints > paints_per_mode) {
+		std::cout << mode << ":\t" << double(msecs)/paints << " msecs per paint\n";
+		msecs = paints = 0;
+		mode++;
+		if(mode >= num_modes)
+			close();
+	}
+
+}
+
+int main(int argc, char* argv[])
+{
+	QApplication app(argc, argv);
+
+	Widget w;
+	w.show();
+	
+	return app.exec();
+}
diff --git a/test/test.png b/test/test.png
new file mode 100644
index 0000000..fce6c7a
Binary files /dev/null and b/test/test.png differ
diff --git a/test/test.pro b/test/test.pro
new file mode 100644
index 0000000..c8b1017
--- /dev/null
+++ b/test/test.pro
@@ -0,0 +1,11 @@
+######################################################################
+# Automatically generated by qmake (2.01a) Sun Oct 24 20:20:52 2010
+######################################################################
+
+TEMPLATE = app
+TARGET = 
+DEPENDPATH += .
+INCLUDEPATH += .
+
+# Input
+SOURCES += painting.cpp
diff --git a/test/testresults b/test/testresults
new file mode 100644
index 0000000..b2fff31
--- /dev/null
+++ b/test/testresults
@@ -0,0 +1,16 @@
+eee-PC, fbdev, fullscreen, Qt 4.4.3
+
+0:	69.0952 msecs per paint
+1:	42.7143 msecs per paint
+2:	70.4762 msecs per paint
+3:	61.619 msecs per paint
+4:	108.619 msecs per paint
+5:	28.381 msecs per paint
+6:	28.4762 msecs per paint
+7:	28.1429 msecs per paint
+8:	23 msecs per paint
+9:	38.3333 msecs per paint
+10:	38.2857 msecs per paint
+11:	54.8571 msecs per paint
+12:	23.0476 msecs per paint
+13:	29.2381 msecs per paint