public final class SwingScreen extends Screen {
/**
- * If true, use double buffering thread.
+ * If true, use triple buffering thread.
*/
- private static final boolean doubleBuffer = true;
+ private static final boolean tripleBuffer = true;
/**
* Cursor style to draw.
private static final String FONTFILE = "terminus-ttf-4.39/TerminusTTF-Bold-4.39.ttf";
/**
- * The BufferStrategy object needed for double-buffering.
+ * The BufferStrategy object needed for triple-buffering.
*/
private BufferStrategy bufferStrategy;
// Save the text cell width/height
getFontDimensions();
- // Setup double-buffering
- if (SwingScreen.doubleBuffer) {
+ // Setup triple-buffering
+ if (SwingScreen.tripleBuffer) {
setIgnoreRepaint(true);
- createBufferStrategy(2);
+ createBufferStrategy(3);
bufferStrategy = getBufferStrategy();
}
}
@Override
public void flushPhysical() {
- if (reallyCleared) {
- // Really refreshed, do it all
- if (SwingScreen.doubleBuffer) {
- Graphics gr = frame.bufferStrategy.getDrawGraphics();
- frame.paint(gr);
- gr.dispose();
- frame.bufferStrategy.show();
- Toolkit.getDefaultToolkit().sync();
- } else {
- frame.repaint();
- }
+ /*
+ System.err.printf("flushPhysical(): reallyCleared %s dirty %s\n",
+ reallyCleared, dirty);
+ */
+
+ // If reallyCleared is set, we have to draw everything.
+ if ((frame.bufferStrategy != null) && (reallyCleared == true)) {
+ // Triple-buffering: we have to redraw everything on this thread.
+ Graphics gr = frame.bufferStrategy.getDrawGraphics();
+ frame.paint(gr);
+ gr.dispose();
+ frame.bufferStrategy.show();
+ // sync() doesn't seem to help the tearing for me.
+ // Toolkit.getDefaultToolkit().sync();
+ return;
+ } else if ((frame.bufferStrategy == null) && (reallyCleared == true)) {
+ // Repaint everything on the Swing thread.
+ frame.repaint();
return;
}
}
// Repaint the desired area
- // System.err.printf("REPAINT X %d %d Y %d %d\n", xMin, xMax,
- // yMin, yMax);
- if (SwingScreen.doubleBuffer) {
+ /*
+ System.err.printf("REPAINT X %d %d Y %d %d\n", xMin, xMax,
+ yMin, yMax);
+ */
+ if (frame.bufferStrategy != null) {
Graphics gr = frame.bufferStrategy.getDrawGraphics();
Rectangle bounds = new Rectangle(xMin, yMin, xMax - xMin,
yMax - yMin);
frame.paint(gr);
gr.dispose();
frame.bufferStrategy.show();
- Toolkit.getDefaultToolkit().sync();
+ // sync() doesn't seem to help the tearing for me.
+ // Toolkit.getDefaultToolkit().sync();
} else {
frame.repaint(xMin, yMin, xMax - xMin, yMax - yMin);
}