New splash screen, renamed some rendering classes, Bugfixes

.settings/org.eclipse.core.resources.prefs

@@ -2,7 +2,7 @@ eclipse.preferences.version=1
 encoding//src/org/nevec/rjm/BigSurd.java=UTF-8
 encoding//src/org/nevec/rjm/BigSurdVec.java=UTF-8
 encoding//src/org/warp/picalculator/Main.java=UTF-8
-encoding//src/org/warp/picalculator/gui/graphicengine/cpu/CPUDisplay.java=UTF-8
+encoding//src/org/warp/picalculator/gui/graphicengine/cpu/CPUEngine.java=UTF-8
 encoding//src/org/warp/picalculator/gui/screens/MathInputScreen.java=UTF-8
 encoding//src/org/warp/picalculator/math/MathematicalSymbols.java=UTF-8
 encoding//src/org/warp/picalculator/math/functions/Expression.java=UTF-8

src/org/warp/picalculator/KeyboardTest.java

@@ -5,6 +5,6 @@ import org.warp.picalculator.gui.screens.KeyboardDebugScreen;
 public class KeyboardTest {
 
 	public static void main(String[] args) throws InterruptedException {
-		new Main(new KeyboardDebugScreen());
+		new Main(new KeyboardDebugScreen(), args);
 	}
 }

src/org/warp/picalculator/TestGPU.java

@@ -2,11 +2,11 @@ package org.warp.picalculator;
 
 import java.io.IOException;
 
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.Drawable;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
-import org.warp.picalculator.gui.graphicengine.gpu.GPUDisplay;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.Skin;
+import org.warp.picalculator.gui.graphicengine.gpu.GPUEngine;
 import org.warp.picalculator.gui.graphicengine.gpu.GPURenderer;
 import org.warp.picalculator.gui.screens.KeyboardDebugScreen;
 import org.warp.picalculator.gui.screens.MarioScreen;
@@ -19,11 +19,9 @@ import java.util.ArrayList;
 
 public class TestGPU {
 
-	public static final GPUDisplay d = new GPUDisplay();
+	public static final GPUEngine d = new GPUEngine();
 
 	public static void main(String[] args) throws IOException {
-		new Main(new KeyboardDebugScreen());
-		if (true) return;
 		Utils.debugOn = true;
 		Utils.debugThirdScreen = false;
 		d.create();
@@ -31,15 +29,15 @@ public class TestGPU {
 		final Scene s = new Scene(d);
 	}
 
-	private static class Scene implements Drawable {
+	private static class Scene implements RenderingLoop {
 
-		private RAWFont exampleFont;
-		private final RAWSkin exampleSkin;
+		private BinaryFont exampleFont;
+		private final Skin exampleSkin;
 
 		private final GPURenderer r;
-		private final Display d;
+		private final GraphicEngine d;
 
-		public Scene(Display d) throws IOException {
+		public Scene(GraphicEngine d) throws IOException {
 			this.d = d;
 			r = (GPURenderer) d.getRenderer();
 
@@ -79,6 +77,12 @@ public class TestGPU {
 			exampleFont.use(d);
 			r.glColor3f(1, 0, 0);
 			r.glDrawStringLeft(10, 170, "Prova! 123456789");
+			
+			//MSAA TEST
+			r.glDrawStringLeft(10f, 190.5f, "Test MSAA");
+			exampleSkin.use(d);
+			r.glColor3f(1.0f, 1.0f, 1.0f);
+			r.glFillRect(162, 2.5f, 160, 160, 0, 0, 16, 16);
 		}
 
 	}

src/org/warp/picalculator/Utils.java

@@ -21,7 +21,7 @@ import java.util.List;
 import org.nevec.rjm.BigDecimalMath;
 import org.nevec.rjm.Rational;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
 import org.warp.picalculator.math.functions.AnteriorFunction;
 import org.warp.picalculator.math.functions.Division;
 import org.warp.picalculator.math.functions.Expression;
@@ -360,7 +360,9 @@ public class Utils {
 
 		var.draw(x + wsegno, y + (hsegno - h1));
 
-		DisplayManager.renderer.glDrawLine(x + 1, y + hsegno - 3, x + 3, y + hsegno - 1);
+		DisplayManager.renderer.glDrawLine(x + 1, y + hsegno - 3, x + 1, y + hsegno - 3);
+		DisplayManager.renderer.glDrawLine(x + 2, y + hsegno - 2, x + 2, y + hsegno - 2);
+		DisplayManager.renderer.glDrawLine(x + 3, y + hsegno - 1, x + 3, y + hsegno - 1);
 		DisplayManager.renderer.glDrawLine(x + 3, y + (hsegno - 1) / 2 + 1, x + 3, y + hsegno - 1);
 		DisplayManager.renderer.glDrawLine(x + 4, y, x + 4, y + (hsegno - 1) / 2);
 		DisplayManager.renderer.glDrawLine(x + 4, y, x + 4 + 1 + w1 + 1, y);
@@ -370,11 +372,11 @@ public class Utils {
 		return getFontHeight(false);
 	}
 
-	public static final RAWFont getFont(boolean small) {
+	public static final BinaryFont getFont(boolean small) {
 		return getFont(small, Main.zoomed);
 	}
 
-	public static final RAWFont getFont(boolean small, boolean zoomed) {
+	public static final BinaryFont getFont(boolean small, boolean zoomed) {
 		return DisplayManager.fonts[getFontIndex(small, zoomed)];
 	}
 

src/org/warp/picalculator/device/Keyboard.java

@@ -700,7 +700,7 @@ public class Keyboard {
 			} else {
 				switch (k) {
 					case POWER:
-						DisplayManager.display.destroy();
+						DisplayManager.engine.destroy();
 						break;
 					case NONE:
 						break;

src/org/warp/picalculator/gui/DisplayManager.java

@@ -10,26 +10,26 @@ import java.util.ArrayList;
 import org.warp.picalculator.Main;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.device.Keyboard;
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.Drawable;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
 import org.warp.picalculator.gui.graphicengine.Renderer;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
-import org.warp.picalculator.gui.graphicengine.gpu.GPUDisplay;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
+import org.warp.picalculator.gui.graphicengine.gpu.GPUEngine;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.Skin;
 import org.warp.picalculator.gui.screens.Screen;
 
 import com.pi4j.wiringpi.Gpio;
 
-public final class DisplayManager implements Drawable {
+public final class DisplayManager implements RenderingLoop {
 	public static DisplayManager INSTANCE;
 	private static float brightness;
 
-	public static final Display display = chooseGraphicEngine();
+	public static final GraphicEngine engine = chooseGraphicEngine();
 	public static Renderer renderer;
 
-	private static RAWSkin skin;
-	public static RAWFont[] fonts;
+	public static Skin guiSkin;
+	public static BinaryFont[] fonts;
 
 	public static String error = null;
 	public String[] errorStackTrace = null;
@@ -72,12 +72,18 @@ public final class DisplayManager implements Drawable {
 	 * }
 	 */
 
-	private static Display chooseGraphicEngine() {
-		Display d;
-		d = new GPUDisplay();
-		if (d.isSupported()) return d;
-		d = new CPUDisplay();
-		if (d.isSupported()) return d;
+	private static GraphicEngine chooseGraphicEngine() {
+		GraphicEngine d;
+		d = new GPUEngine();
+		if (d.isSupported()) {
+			Utils.debug.println("Using GPU Graphic Engine");
+			return d;
+		}
+		d = new CPUEngine();
+		if (d.isSupported()) {
+			Utils.debug.println("Using CPU Graphic Engine");
+			return d;
+		}
 		throw new UnsupportedOperationException("No graphic engines available.");
 	}
 
@@ -197,30 +203,30 @@ public final class DisplayManager implements Drawable {
 	}
 
 	private void load_skin() throws IOException {
-		skin = display.loadSkin("skin.png");
+		guiSkin = engine.loadSkin("skin.png");
 	}
 
 	private void load_fonts() throws IOException {
-		fonts = new RAWFont[7];
-		fonts[0] = display.loadFont("big");
-		fonts[1] = display.loadFont("small");
-		fonts[2] = display.loadFont("ex");
-		fonts[3] = display.loadFont("big");
-		fonts[4] = display.loadFont("32");
-		fonts[5] = display.loadFont("square");
+		fonts = new BinaryFont[7];
+		fonts[0] = engine.loadFont("big");
+		fonts[1] = engine.loadFont("small");
+		fonts[2] = engine.loadFont("ex");
+		fonts[3] = engine.loadFont("big");
+		fonts[4] = engine.loadFont("32");
+		fonts[5] = engine.loadFont("square");
 	}
 
 	private void draw_init() {
-		renderer.glClear(display.getWidth(), display.getHeight());
+		renderer.glClear(engine.getWidth(), engine.getHeight());
 	}
 
 	private void draw_status() {
 		renderer.glColor(0xFFc5c2af);
-		renderer.glFillColor(0, 0, display.getWidth(), 20);
+		renderer.glFillColor(0, 0, engine.getWidth(), 20);
 		renderer.glColor3i(0, 0, 0);
-		renderer.glDrawLine(0, 20, display.getWidth() - 1, 20);
+		renderer.glDrawLine(0, 20, engine.getWidth() - 1, 20);
 		renderer.glColor3i(255, 255, 255);
-		skin.use(display);
+		guiSkin.use(engine);
 		if (Keyboard.shift) {
 			renderer.glFillRect(2 + 18 * 0, 2, 16, 16, 16 * 2, 16 * 0, 16, 16);
 		} else {
@@ -291,18 +297,22 @@ public final class DisplayManager implements Drawable {
 	private void draw_bottom() {
 		renderer.glDrawStringLeft(2, 90, displayDebugString);
 
-		Utils.getFont(false, true).use(DisplayManager.display);
+		Utils.getFont(true, false).use(DisplayManager.engine);
 		DisplayManager.renderer.glColor4i(255, 0, 0, 40);
-		DisplayManager.renderer.glDrawStringLeft(5 + 1, Main.screenSize[1] - 20 + 1, "WORK IN PROGRESS.");
+		DisplayManager.renderer.glDrawStringLeft(1 + 1, Main.screenSize[1] - 7 - 7 + 1, "WORK IN");
 		DisplayManager.renderer.glColor4i(255, 0, 0, 80);
-		DisplayManager.renderer.glDrawStringLeft(5, Main.screenSize[1] - 20, "WORK IN PROGRESS.");
+		DisplayManager.renderer.glDrawStringLeft(1, Main.screenSize[1] - 7 - 7, "WORK IN");
+		DisplayManager.renderer.glColor4i(255, 0, 0, 40);
+		DisplayManager.renderer.glDrawStringLeft(1 + 1, Main.screenSize[1] - 7 + 1, "PROGRESS.");
+		DisplayManager.renderer.glColor4i(255, 0, 0, 80);
+		DisplayManager.renderer.glDrawStringLeft(1, Main.screenSize[1] - 7, "PROGRESS.");
 	}
 
 	private void draw_world() {
 		renderer.glColor3i(255, 255, 255);
 
 		if (error != null) {
-			Utils.getFont(false, false).use(display);
+			Utils.getFont(false, false).use(engine);
 			renderer.glColor3i(129, 28, 22);
 			renderer.glDrawStringRight(Main.screenSize[0] - 2, Main.screenSize[1] - DisplayManager.glyphsHeight[1] - 2, "ANDREA CAVALLI'S CALCULATOR");
 			renderer.glColor3i(149, 32, 26);
@@ -313,11 +323,11 @@ public final class DisplayManager implements Drawable {
 				renderer.glDrawStringLeft(2, 22 + i, stackPart);
 				i += 11;
 			}
-			fonts[0].use(display);
+			fonts[0].use(engine);
 			renderer.glColor3i(129, 28, 22);
 			renderer.glDrawStringCenter((Main.screenSize[0] / 2), 11, "UNEXPECTED EXCEPTION");
 		} else {
-			fonts[0].use(display);
+			fonts[0].use(engine);
 			draw_screen();
 			draw_status();
 			draw_bottom();
@@ -355,9 +365,9 @@ public final class DisplayManager implements Drawable {
 	}
 
 	private void checkDisplayResized() {
-		if (display.wasResized()) {
-			Main.screenSize[0] = display.getWidth();
-			Main.screenSize[1] = display.getHeight();
+		if (engine.wasResized()) {
+			Main.screenSize[0] = engine.getWidth();
+			Main.screenSize[1] = engine.getHeight();
 		}
 	};
 
@@ -365,8 +375,8 @@ public final class DisplayManager implements Drawable {
 		try {
 			load_skin();
 			load_fonts();
-			display.create();
-			renderer = display.getRenderer();
+			engine.create();
+			renderer = engine.getRenderer();
 
 			try {
 				screen.initialize();
@@ -438,9 +448,9 @@ public final class DisplayManager implements Drawable {
 			dbgthrd.setName("Debug performance thread");
 			dbgthrd.start();
 			
-			display.start(this);
+			engine.start(this);
 			
-			display.waitUntilExit();
+			engine.waitUntilExit();
 		} catch (final Exception ex) {
 			ex.printStackTrace();
 		} finally {}
@@ -483,7 +493,7 @@ public final class DisplayManager implements Drawable {
 		renderer.glColor4f(f1,f2,f3,f4);
 	}
 
-	public static Drawable getDrawable() {
+	public static RenderingLoop getDrawable() {
 		return INSTANCE;
 	}
 

src/org/warp/picalculator/gui/graphicengine/BinaryFont.java

@@ -4,7 +4,7 @@ package org.warp.picalculator.gui.graphicengine;
  *
  * @author andreacv
  */
-public interface RAWFont extends RAWSkin {
+public interface BinaryFont extends Skin {
 
 	public int getStringWidth(String text);
 

src/org/warp/picalculator/gui/graphicengine/GraphicEngine.java

@@ -2,7 +2,7 @@ package org.warp.picalculator.gui.graphicengine;
 
 import java.io.IOException;
 
-public interface Display {
+public interface GraphicEngine {
 
 	public int[] getSize();
 
@@ -24,15 +24,15 @@ public interface Display {
 
 	public void destroy();
 
-	public void start(Drawable d);
+	public void start(RenderingLoop d);
 
 	public void repaint();
 
 	public Renderer getRenderer();
 
-	public RAWFont loadFont(String file) throws IOException;
+	public BinaryFont loadFont(String file) throws IOException;
 
-	public RAWSkin loadSkin(String file) throws IOException;
+	public Skin loadSkin(String file) throws IOException;
 
 	public void waitUntilExit();
 

src/org/warp/picalculator/gui/graphicengine/Renderer.java

@@ -23,19 +23,19 @@ public interface Renderer {
 
 	public void glClear(int screenWidth, int screenHeight);
 
-	public void glDrawLine(int x0, int y0, int x1, int y1);
+	public void glDrawLine(float x0, float y0, float x1, float y1);
 
-	public void glFillRect(int x, int y, int width, int height, float uvX, float uvY, float uvWidth, float uvHeight);
+	public void glFillRect(float x, float y, float width, float height, float uvX, float uvY, float uvWidth, float uvHeight);
 
-	public void glFillColor(int x, int y, int width, int height);
+	public void glFillColor(float x, float y, float width, float height);
 
-	public void glDrawStringLeft(int x, int y, String text);
+	public void glDrawStringLeft(float x, float y, String text);
 
-	public void glDrawStringCenter(int x, int y, String text);
+	public void glDrawStringCenter(float x, float y, String text);
 
-	public void glDrawStringRight(int x, int y, String text);
+	public void glDrawStringRight(float x, float y, String text);
 	
 	public void glClearSkin();
 
-	public RAWFont getCurrentFont();
+	public BinaryFont getCurrentFont();
 }

src/org/warp/picalculator/gui/graphicengine/RenderingLoop.java

@@ -1,5 +1,5 @@
 package org.warp.picalculator.gui.graphicengine;
 
-public interface Drawable {
+public interface RenderingLoop {
 	public void refresh();
 }

src/org/warp/picalculator/gui/graphicengine/Skin.java

@@ -2,11 +2,11 @@ package org.warp.picalculator.gui.graphicengine;
 
 import java.io.IOException;
 
-public interface RAWSkin {
+public interface Skin {
 
 	public void load(String file) throws IOException;
 
-	public void initialize(Display d);
+	public void initialize(GraphicEngine d);
 
-	public void use(Display d);
+	public void use(GraphicEngine d);
 }

src/org/warp/picalculator/gui/graphicengine/cpu/CPUEngine.java

@@ -8,13 +8,13 @@ import java.io.IOException;
 import org.warp.picalculator.Main;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.Drawable;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.Skin;
 import org.warp.picalculator.gui.graphicengine.Renderer;
 
-public class CPUDisplay implements Display {
+public class CPUEngine implements GraphicEngine {
 
 	private SwingWindow INSTANCE;
 	public int[] size = new int[] { 1, 1 };
@@ -85,7 +85,7 @@ public class CPUDisplay implements Display {
 	}
 
 	@Override
-	public void start(Drawable d) {
+	public void start(RenderingLoop d) {
 		Thread th = new Thread(() -> {
 			try {
 				double extratime = 0;
@@ -254,49 +254,59 @@ public class CPUDisplay implements Display {
 		}
 
 		@Override
-		public void glDrawLine(int x0, int y0, int x1, int y1) {
+		public void glDrawLine(float x0, float y0, float x1, float y1) {
 			x0 += Main.screenPos[0];
 			x1 += Main.screenPos[0];
 			y0 += Main.screenPos[1];
 			y1 += Main.screenPos[1];
-			if (x0 >= size[0] || y0 >= size[0]) {
+			final int ix0 = (int) x0;
+			final int ix1 = (int) x1;
+			final int iy0 = (int) y0;
+			final int iy1 = (int) y1;
+			if (ix0 >= size[0] || iy0 >= size[0]) {
 				return;
 			}
-			if (y0 == y1) {
-				for (int x = 0; x <= x1 - x0; x++) {
-					canvas2d[x0 + x + y0 * size[0]] = color;
+			if (iy0 == iy1) {
+				for (int x = 0; x <= ix1 - ix0; x++) {
+					canvas2d[ix0 + x + iy0 * size[0]] = color;
 				}
-			} else if (x0 == x1) {
-				for (int y = 0; y <= y1 - y0; y++) {
-					canvas2d[x0 + (y0 + y) * size[0]] = color;
+			} else if (ix0 == ix1) {
+				for (int y = 0; y <= iy1 - iy0; y++) {
+					canvas2d[ix0 + (iy0 + y) * size[0]] = color;
 				}
 			} else {
-				final int m = (y1 - y0) / (x1 - x0);
-				for (int texx = 0; texx <= x1 - x0; texx++) {
-					if (x0 + texx < size[0] && y0 + (m * texx) < size[1]) {
-						canvas2d[(x0 + texx) + (y0 + (m * texx)) * size[0]] = color;
+				final int m = (iy1 - iy0) / (ix1 - ix0);
+				for (int texx = 0; texx <= ix1 - ix0; texx++) {
+					if (ix0 + texx < size[0] && iy0 + (m * texx) < size[1]) {
+						canvas2d[(ix0 + texx) + (iy0 + (m * texx)) * size[0]] = color;
 					}
 				}
 			}
 		}
 
 		@Override
-		public void glFillRect(int x, int y, int width, int height, float uvX, float uvY, float uvWidth,
+		public void glFillRect(float x, float y, float width, float height, float uvX, float uvY, float uvWidth,
 				float uvHeight) {
 			if (currentSkin != null) {
-				glDrawSkin(x, y, (int) uvX, (int) uvY, (int) (uvWidth + uvX), (int) (uvHeight + uvY), true);
+				glDrawSkin((int) x, (int) y, (int) uvX, (int) uvY, (int) (uvWidth + uvX), (int) (uvHeight + uvY), true);
 			} else {
 				glFillColor(x, y, width, height);
 			}
 		}
 
 		@Override
-		public void glFillColor(int x, int y, int width, int height) {
+		public void glFillColor(float x, float y, float width, float height) {
 			x += Main.screenPos[0];
 			y += Main.screenPos[1];
-			int x1 = x + width;
-			int y1 = y + height;
-			if (x >= size[0] || y >= size[0]) {
+			
+			final int ix = (int) x;
+			final int iy = (int) y;
+			final int iw = (int) width;
+			final int ih = (int) height;
+			
+			int x1 = ix + iw;
+			int y1 = iy + ih;
+			if (ix >= size[0] || iy >= size[0]) {
 				return;
 			}
 			if (x1 >= size[0]) {
@@ -306,18 +316,21 @@ public class CPUDisplay implements Display {
 				y1 = size[1];
 			}
 			final int sizeW = size[0];
-			for (int px = x; px < x1; px++) {
-				for (int py = y; py < y1; py++) {
+			for (int px = ix; px < x1; px++) {
+				for (int py = iy; py < y1; py++) {
 					canvas2d[(px) + (py) * sizeW] = color;
 				}
 			}
 		}
 
 		@Override
-		public void glDrawStringLeft(int x, int y, String textString) {
+		public void glDrawStringLeft(float x, float y, String textString) {
 			x += Main.screenPos[0];
 			y += Main.screenPos[1];
 
+			final int ix = (int) x;
+			final int iy = (int) y;
+			
 			final int[] text = currentFont.getCharIndexes(textString);
 			final int[] screen = canvas2d;
 			final int[] screenSize = size;
@@ -335,13 +348,13 @@ public class CPUDisplay implements Display {
 				final int charIndex = text[i];
 				for (int dy = 0; dy < currentFont.charH; dy++) {
 					for (int dx = 0; dx < currentFont.charW; dx++) {
-						j = x + cpos + dx;
+						j = ix + cpos + dx;
 						if (j > 0 & j < screenSize[0]) {
 							final int bit = dx + dy * currentFont.charW;
 							currentInt = (int) (Math.floor(bit) / (CPUFont.intBits));
 							currentIntBitPosition = bit - (currentInt * CPUFont.intBits);
 							bitData = (currentFont.chars32[charIndex * currentFont.charIntCount + currentInt] >> currentIntBitPosition) & 1;
-							screenPos = x + cpos + dx + (y + dy) * screenSize[0];
+							screenPos = ix + cpos + dx + (iy + dy) * screenSize[0];
 							if (bitData == 1 & screenLength > screenPos) {
 								screen[screenPos] = color;
 							}
@@ -352,12 +365,12 @@ public class CPUDisplay implements Display {
 		}
 
 		@Override
-		public void glDrawStringCenter(int x, int y, String text) {
+		public void glDrawStringCenter(float x, float y, String text) {
 			glDrawStringLeft(x - (currentFont.getStringWidth(text) / 2), y, text);
 		}
 
 		@Override
-		public void glDrawStringRight(int x, int y, String text) {
+		public void glDrawStringRight(float x, float y, String text) {
 			glDrawStringLeft(x - currentFont.getStringWidth(text), y, text);
 		}
 
@@ -377,7 +390,7 @@ public class CPUDisplay implements Display {
 		}
 
 		@Override
-		public RAWFont getCurrentFont() {
+		public BinaryFont getCurrentFont() {
 			return currentFont;
 		}
 
@@ -414,12 +427,12 @@ public class CPUDisplay implements Display {
 	}
 
 	@Override
-	public RAWFont loadFont(String file) throws IOException {
+	public BinaryFont loadFont(String file) throws IOException {
 		return new CPUFont(file);
 	}
 
 	@Override
-	public RAWSkin loadSkin(String file) throws IOException {
+	public Skin loadSkin(String file) throws IOException {
 		return new CPUSkin(file);
 	}
 

src/org/warp/picalculator/gui/graphicengine/cpu/CPUFont.java

@@ -12,11 +12,11 @@ import java.util.logging.Logger;
 import javax.imageio.ImageIO;
 
 import org.warp.picalculator.Utils;
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay.CPURenderer;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine.CPURenderer;
 
-public class CPUFont implements RAWFont {
+public class CPUFont implements BinaryFont {
 
 	public boolean[][] rawchars;
 	public int[] chars32;
@@ -134,7 +134,7 @@ public class CPUFont implements RAWFont {
 		try {
 			ImageIO.write(bi, "PNG", new File(coutputpng));
 		} catch (final IOException ex) {
-			Logger.getLogger(RAWFont.class.getName()).log(Level.SEVERE, null, ex);
+			Logger.getLogger(BinaryFont.class.getName()).log(Level.SEVERE, null, ex);
 		}
 	}
 
@@ -149,13 +149,13 @@ public class CPUFont implements RAWFont {
 	}
 
 	@Override
-	public void initialize(Display d) {
+	public void initialize(GraphicEngine d) {
 		// TODO Auto-generated method stub
 
 	}
 
 	@Override
-	public void use(Display d) {
+	public void use(GraphicEngine d) {
 		((CPURenderer) d.getRenderer()).currentFont = this;
 	}
 

src/org/warp/picalculator/gui/graphicengine/cpu/CPUSkin.java

@@ -6,11 +6,11 @@ import java.io.IOException;
 import javax.imageio.ImageIO;
 
 import org.warp.picalculator.Main;
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay.CPURenderer;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.Skin;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine.CPURenderer;
 
-public class CPUSkin implements RAWSkin {
+public class CPUSkin implements Skin {
 
 	public int[] skinData;
 	public int[] skinSize;
@@ -40,13 +40,13 @@ public class CPUSkin implements RAWSkin {
 	}
 
 	@Override
-	public void initialize(Display d) {
+	public void initialize(GraphicEngine d) {
 		// TODO Auto-generated method stub
 
 	}
 
 	@Override
-	public void use(Display d) {
+	public void use(GraphicEngine d) {
 		((CPURenderer) d.getRenderer()).currentSkin = this;
 	}
 

src/org/warp/picalculator/gui/graphicengine/cpu/SwingWindow.java

@@ -19,16 +19,16 @@ import org.warp.picalculator.Utils;
 import org.warp.picalculator.device.Keyboard;
 import org.warp.picalculator.device.Keyboard.Key;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.Drawable;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
 
 public class SwingWindow extends JFrame {
 	private static final long serialVersionUID = 2945898937634075491L;
 	public CustomCanvas c;
-	private static Drawable d;
+	private static RenderingLoop d;
 	public boolean wasResized = false;
-	private final CPUDisplay display;
+	private final CPUEngine display;
 
-	public SwingWindow(CPUDisplay disp, Drawable d) {
+	public SwingWindow(CPUEngine disp, RenderingLoop d) {
 		SwingWindow.d = d;
 		display = disp;
 		c = new CustomCanvas();
@@ -60,7 +60,7 @@ public class SwingWindow extends JFrame {
 		addComponentListener(new ComponentListener() {
 			@Override
 			public void componentHidden(ComponentEvent e) {
-				DisplayManager.display.destroy();
+				DisplayManager.engine.destroy();
 			}
 
 			@Override
@@ -231,7 +231,7 @@ public class SwingWindow extends JFrame {
 
 			final int[] a = ((DataBufferInt) display.g.getRaster().getDataBuffer()).getData();
 //		        System.arraycopy(canvas2d, 0, a, 0, canvas2d.length);
-			CPUDisplay.canvas2d = a;
+			CPUEngine.canvas2d = a;
 			g.clearRect(0, 0, display.size[0], display.size[1]);
 			g.drawImage(display.g, 0, 0, null);
 //			long time2 = System.nanoTime();

src/org/warp/picalculator/gui/graphicengine/gpu/GPUEngine.java

@@ -4,19 +4,19 @@ import java.io.IOException;
 
 import org.warp.picalculator.Main;
 import org.warp.picalculator.Utils;
-import org.warp.picalculator.gui.graphicengine.Drawable;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
+import org.warp.picalculator.gui.graphicengine.RenderingLoop;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.Skin;
 
 import com.jogamp.opengl.GLProfile;
 import com.jogamp.opengl.egl.EGL;
 
-public class GPUDisplay implements org.warp.picalculator.gui.graphicengine.Display {
+public class GPUEngine implements org.warp.picalculator.gui.graphicengine.GraphicEngine {
 
 	private volatile boolean initialized = false;
 	private volatile boolean created = false;
 	private NEWTWindow wnd;
-	private Drawable d;
+	private RenderingLoop d;
 	private GPURenderer r;
 	int[] size = new int[]{Main.screenSize[0], Main.screenSize[1]};
 
@@ -86,7 +86,7 @@ public class GPUDisplay implements org.warp.picalculator.gui.graphicengine.Displ
 	}
 
 	@Override
-	public void start(Drawable d) {
+	public void start(RenderingLoop d) {
 		this.d = d;
 		wnd.window.setVisible(true);
 	}
@@ -104,12 +104,12 @@ public class GPUDisplay implements org.warp.picalculator.gui.graphicengine.Displ
 	}
 
 	@Override
-	public RAWFont loadFont(String file) throws IOException {
+	public BinaryFont loadFont(String file) throws IOException {
 		return new GPUFont(file);
 	}
 
 	@Override
-	public RAWSkin loadSkin(String file) throws IOException {
+	public Skin loadSkin(String file) throws IOException {
 		return new GPUSkin(file);
 	}
 
@@ -126,7 +126,7 @@ public class GPUDisplay implements org.warp.picalculator.gui.graphicengine.Displ
 
 	@Override
 	public boolean isSupported() {
-		return GLProfile.isAnyAvailable() == false;
+		return GLProfile.isAvailable(GLProfile.GL2ES1);
 	}
 
 }

src/org/warp/picalculator/gui/graphicengine/gpu/GPUFont.java

@@ -6,14 +6,14 @@ import java.io.IOException;
 
 import javax.imageio.ImageIO;
 
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
 import org.warp.picalculator.gui.graphicengine.cpu.CPUFont;
 
 import com.jogamp.opengl.GLException;
 import com.jogamp.opengl.util.texture.Texture;
 
-public class GPUFont implements RAWFont {
+public class GPUFont implements BinaryFont {
 
 	public Texture texture;
 	public int textureW;
@@ -100,7 +100,7 @@ public class GPUFont implements RAWFont {
 	}
 
 	@Override
-	public void initialize(Display d) {
+	public void initialize(GraphicEngine d) {
 		genTexture(tmpFont.rawchars);
 		tmpFont.chars32 = null;
 		tmpFont.rawchars = null;
@@ -109,7 +109,7 @@ public class GPUFont implements RAWFont {
 	}
 
 	@Override
-	public void use(Display d) {
+	public void use(GraphicEngine d) {
 		if (!initialized) {
 			initialize(d);
 		}

src/org/warp/picalculator/gui/graphicengine/gpu/GPURenderer.java

@@ -11,7 +11,7 @@ import java.nio.Buffer;
 import java.nio.FloatBuffer;
 import javax.imageio.ImageIO;
 
-import org.warp.picalculator.gui.graphicengine.RAWFont;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
 import org.warp.picalculator.gui.graphicengine.Renderer;
 
 import com.jogamp.common.nio.Buffers;
@@ -112,12 +112,12 @@ public class GPURenderer implements Renderer {
 	}
 
 	@Override
-	public void glDrawLine(int x0, int y0, int x1, int y1) {
+	public void glDrawLine(float x0, float y0, float x1, float y1) {
 		glFillColor(x0, y0, x1-x0+1, y1-y0+1);
 	}
 
 	@Override
-	public void glFillRect(int x, int y, int width, int height, float uvX, float uvY, float uvWidth, float uvHeight) {
+	public void glFillRect(float x, float y, float width, float height, float uvX, float uvY, float uvWidth, float uvHeight) {
 		enableTexture();
 		uvWidth/=currentTexWidth;
 		uvX/=currentTexWidth;
@@ -132,7 +132,7 @@ public class GPURenderer implements Renderer {
 	}
 
 	@Override
-	public void glFillColor(int x0, int y0, int w1, int h1) {
+	public void glFillColor(float x0, float y0, float w1, float h1) {
 		disableTexture();
 		final float[] vertices = { x0, y0, 0.0f, x0, y0 + h1, 0.0f, x0 + w1, y0, 0.0f, x0 + w1, y0 + h1, 0.0f, };
 		final float[] tex_vertices = { 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, };
@@ -143,7 +143,7 @@ public class GPURenderer implements Renderer {
 	}
 
 	@Override
-	public void glDrawStringLeft(int x, int y, String text) {
+	public void glDrawStringLeft(float x, float y, String text) {
 		final int txtLen = text.length();
 		int[] txtArray = currentFont.getCharIndexes(text);
 		int tableIndexX;
@@ -151,22 +151,22 @@ public class GPURenderer implements Renderer {
 		for (int currentCharIndex = 0; currentCharIndex < txtLen; currentCharIndex++) {
 			tableIndexX = txtArray[currentCharIndex] % currentFont.memoryWidthOfEachColumn;
 			tableIndexY = (txtArray[currentCharIndex] - tableIndexX) / currentFont.memoryWidthOfEachColumn;
-			glFillRect(x + currentCharIndex * (currentFont.charW + 1), y, currentFont.charW, currentFont.charH, tableIndexX*currentFont.charW, tableIndexY*currentFont.charH, currentFont.charW, currentFont.charH);
+			glFillRect(x + ((float)currentCharIndex) * ((float)(currentFont.charW + 1)), y, currentFont.charW, currentFont.charH, tableIndexX*currentFont.charW, tableIndexY*currentFont.charH, currentFont.charW, currentFont.charH);
 		}
 	}
 
 	@Override
-	public void glDrawStringCenter(int x, int y, String text) {
+	public void glDrawStringCenter(float x, float y, String text) {
 		glDrawStringLeft(x - (currentFont.getStringWidth(text) / 2), y, text);
 	}
 
 	@Override
-	public void glDrawStringRight(int x, int y, String text) {
+	public void glDrawStringRight(float x, float y, String text) {
 		glDrawStringLeft(x - currentFont.getStringWidth(text), y, text);
 	}
 
 	@Override
-	public RAWFont getCurrentFont() {
+	public BinaryFont getCurrentFont() {
 		return currentFont;
 	}
 

src/org/warp/picalculator/gui/graphicengine/gpu/GPUSkin.java

@@ -2,14 +2,14 @@ package org.warp.picalculator.gui.graphicengine.gpu;
 
 import java.awt.image.BufferedImage;
 import java.io.IOException;
-import org.warp.picalculator.gui.graphicengine.Display;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
+import org.warp.picalculator.gui.graphicengine.Skin;
 
 import com.jogamp.opengl.GL2ES1;
 import com.jogamp.opengl.GLException;
 import com.jogamp.opengl.util.texture.Texture;
 
-public class GPUSkin implements RAWSkin {
+public class GPUSkin implements Skin {
 
 	public Texture t;
 	public int w;
@@ -31,7 +31,7 @@ public class GPUSkin implements RAWSkin {
 	}
 
 	@Override
-	public void initialize(Display d) {
+	public void initialize(GraphicEngine d) {
 		try {
 			BufferedImage i = GPURenderer.openTexture(texturePath);
 			GL2ES1 gl = ((GPURenderer)d.getRenderer()).gl;
@@ -47,7 +47,7 @@ public class GPUSkin implements RAWSkin {
 	}
 
 	@Override
-	public void use(Display d) {
+	public void use(GraphicEngine d) {
 		if (!initialized) {
 			initialize(d);
 		}

src/org/warp/picalculator/gui/graphicengine/gpu/NEWTWindow.java

@@ -36,6 +36,10 @@ import com.jogamp.opengl.GLProfile;
 import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
 import com.jogamp.opengl.fixedfunc.GLPointerFunc;
 import com.jogamp.opengl.GLCapabilities;
+import com.jogamp.nativewindow.util.DimensionImmutable;
+import com.jogamp.nativewindow.util.PixelFormat;
+import com.jogamp.nativewindow.util.PixelRectangle;
+import com.jogamp.newt.NewtFactory;
 import com.jogamp.newt.event.KeyEvent;
 import com.jogamp.newt.event.KeyListener;
 import com.jogamp.newt.event.WindowEvent;
@@ -47,11 +51,13 @@ import com.jogamp.opengl.util.*;
 
 import java.awt.event.ComponentEvent;
 import java.awt.event.ComponentListener;
+import java.nio.ByteBuffer;
+import java.util.Collection;
 
 import org.warp.picalculator.device.Keyboard;
 import org.warp.picalculator.device.Keyboard.Key;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.Display;
+import org.warp.picalculator.gui.graphicengine.GraphicEngine;
 
 /**
  * <pre>
@@ -88,12 +94,12 @@ import org.warp.picalculator.gui.graphicengine.Display;
  * @author Xerxes Rånby (xranby)
  */
 
-public class NEWTWindow implements GLEventListener {
+class NEWTWindow implements GLEventListener {
 
-	private final GPUDisplay disp;
+	private final GPUEngine disp;
 	private final GPURenderer renderer;
 
-	public NEWTWindow(GPUDisplay disp) {
+	public NEWTWindow(GPUEngine disp) {
 		this.disp = disp;
 		renderer = disp.getRenderer();
 	}
@@ -116,13 +122,16 @@ public class NEWTWindow implements GLEventListener {
 
 		System.out.println("Loading OpenGL...");
 		System.out.println(GLProfile.glAvailabilityToString());
-		if (GLProfile.isAnyAvailable()) {
+		if (!GLProfile.isAvailable(GLProfile.GL2ES1)) {
 			System.err.println("Le OpenGL non sono presenti su questo computer!");
+			return;
 		}
+		System.setProperty("jnlp.newt.window.icons", "res/icons/calculator-016.png res/icons/calculator-018.png res/icons/calculator-256.png");
 		final GLCapabilities caps = new GLCapabilities(GLProfile.get(GLProfile.GL2ES1));
 		System.out.println("Loaded OpenGL");
 		// We may at this point tweak the caps and request a translucent drawable
 		caps.setBackgroundOpaque(true); //transparency window
+		caps.setSampleBuffers(false);
 		final GLWindow glWindow = GLWindow.create(caps);
 		window = glWindow;
 
@@ -138,7 +147,7 @@ public class NEWTWindow implements GLEventListener {
 
 			@Override
 			public void windowDestroyed(WindowEvent e) {
-				DisplayManager.display.destroy();
+				DisplayManager.engine.destroy();
 			}
 
 			@Override
@@ -299,10 +308,11 @@ public class NEWTWindow implements GLEventListener {
 		
 		//Textures
 		gl.glEnable(GL.GL_TEXTURE_2D);
-
+		
 		//Transparency
 		gl.glEnable(GL2ES1.GL_BLEND);
 		gl.glBlendFunc(GL2ES1.GL_SRC_ALPHA, GL2ES1.GL_ONE_MINUS_SRC_ALPHA);
+		gl.glShadeModel(GL2ES1.GL_SMOOTH);
 		
 		try {
 			renderer.currentTex = ((GPUSkin) disp.loadSkin("test.png")).t;

src/org/warp/picalculator/gui/screens/ChooseVariableValueScreen.java

@@ -28,7 +28,7 @@ public class ChooseVariableValueScreen extends Screen {
 
 	@Override
 	public void render() {
-		Utils.getFont(false, true).use(DisplayManager.display);
+		Utils.getFont(false, true).use(DisplayManager.engine);
 		DisplayManager.renderer.glColor4i(0, 0, 0, 64);
 		DisplayManager.renderer.glDrawStringCenter(Main.screenSize[0] / 2 + 1, Main.screenSize[1] / 2 - 20, "WORK IN PROGRESS.");
 		DisplayManager.renderer.glDrawStringCenter(Main.screenSize[0] / 2, Main.screenSize[1] / 2 - 20 + 1, "WORK IN PROGRESS.");
@@ -36,7 +36,7 @@ public class ChooseVariableValueScreen extends Screen {
 		DisplayManager.renderer.glColor3i(255, 0, 0);
 		DisplayManager.renderer.glDrawStringCenter(Main.screenSize[0] / 2, Main.screenSize[1] / 2 - 20, "WORK IN PROGRESS.");
 		
-		Utils.getFont(false, false).use(DisplayManager.display);
+		Utils.getFont(false, false).use(DisplayManager.engine);
 		DisplayManager.renderer.glColor4i(0, 0, 0, 64);
 		DisplayManager.renderer.glDrawStringCenter(Main.screenSize[0] / 2 + 1, Main.screenSize[1] / 2, "THIS SCREEN MUST HAVE A GUI TO SELECT THE VARIABLE TO SOLVE.");
 		DisplayManager.renderer.glDrawStringCenter(Main.screenSize[0] / 2, Main.screenSize[1] / 2 + 1, "THIS SCREEN MUST HAVE A GUI TO SELECT THE VARIABLE TO SOLVE.");

src/org/warp/picalculator/gui/screens/KeyboardDebugScreen.java

@@ -30,18 +30,18 @@ public class KeyboardDebugScreen extends Screen {
 	@Override
 	public void render() {
 		Renderer renderer = DisplayManager.renderer;
-		fonts[2].use(DisplayManager.display);
+		fonts[2].use(DisplayManager.engine);
 		renderer.glColor4f(0.75f, 0.0f, 0.0f, 1.0f);
 		renderer.glDrawStringRight(Main.screenSize[0] - 10, 30, "-" + keyevent.toUpperCase() + "-");
 		if (keyevent != "NONE") {
-			fonts[2].use(DisplayManager.display);
+			fonts[2].use(DisplayManager.engine);
 			renderer.glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 			renderer.glDrawStringLeft(10, 30, "Key position");
 			renderer.glDrawStringLeft(10, 45, "X: " + keyX + ", Y:" + keyY);
 			renderer.glDrawStringLeft(10, 65, "Key value");
 			renderer.glDrawStringLeft(10, 80, key);
 		}
-		fonts[3].use(DisplayManager.display);
+		fonts[3].use(DisplayManager.engine);
 		renderer.glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 		for (int i = 0; i < 5; i++) {
 			if (log[i] != null) {
@@ -53,10 +53,10 @@ public class KeyboardDebugScreen extends Screen {
 		renderer.glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 		renderer.glFillColor(-80 + 100 + 200, 90, 5, 5);
 		renderer.glFillColor(-80 + 100, 100, 200, 70);
-		fonts[2].use(DisplayManager.display);
+		fonts[2].use(DisplayManager.engine);
 		renderer.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 		renderer.glDrawStringCenter(-80 + 100 + 200 / 2, 100 + 70 / 2 - (renderer.getCurrentFont().getCharacterHeight() / 2), "FROM SERIAL");
-		fonts[3].use(DisplayManager.display);
+		fonts[3].use(DisplayManager.engine);
 		renderer.glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
 		for (int i = 0; i < 8; i++) {
 			if (pinsA[i] == 1) {
@@ -99,10 +99,10 @@ public class KeyboardDebugScreen extends Screen {
 		renderer.glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
 		renderer.glFillColor(150 + 90, 200, 5, 5);
 		renderer.glFillColor(150 + 100, 100, 200, 70);
-		fonts[2].use(DisplayManager.display);
+		fonts[2].use(DisplayManager.engine);
 		renderer.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 		renderer.glDrawStringCenter(150 + 100 + 200 / 2, 100 + 70 / 2 - (renderer.getCurrentFont().getCharacterHeight() / 2), "TO SERIAL");
-		fonts[3].use(DisplayManager.display);
+		fonts[3].use(DisplayManager.engine);
 		renderer.glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
 		for (int i = 15; i >= 8; i--) {
 			if (pinsB[i] == 1) {

src/org/warp/picalculator/gui/screens/LoadingScreen.java

@@ -43,31 +43,13 @@ public class LoadingScreen extends Screen {
 
 	@Override
 	public void render() {
-		fonts[2].use(DisplayManager.display);
-		DisplayManager.renderer.glClearColor(0xFF000000);
-		DisplayManager.renderer.glClear(DisplayManager.display.getWidth(), DisplayManager.display.getWidth());
-		DisplayManager.renderer.glColor3i(230, 33, 23);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) - 1, (int) ((Main.screenSize[1] / 2) - 25 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) - 2, (int) ((Main.screenSize[1] / 2) - 25 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) + 1, (int) ((Main.screenSize[1] / 2) - 25 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) + 2, (int) ((Main.screenSize[1] / 2) - 25 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (int) ((Main.screenSize[1] / 2) - 25 - 1 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (int) ((Main.screenSize[1] / 2) - 25 - 2 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (int) ((Main.screenSize[1] / 2) - 25 + 1 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (int) ((Main.screenSize[1] / 2) - 25 + 2 + loadingTextTranslation), titleString);
-
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) + 1, (int) ((Main.screenSize[1] / 2) - 25 + 1 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) - 1, (int) ((Main.screenSize[1] / 2) - 25 + 1 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) - 1, (int) ((Main.screenSize[1] / 2) - 25 - 1 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2) + 1, (int) ((Main.screenSize[1] / 2) - 25 - 1 + loadingTextTranslation), titleString);
+		DisplayManager.guiSkin.use(DisplayManager.engine);
 		DisplayManager.renderer.glColor3i(255, 255, 255);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (int) ((Main.screenSize[1] / 2) - 25 + loadingTextTranslation), titleString);
-		DisplayManager.renderer.glColor4f(0.0f, 0.0f, 0.0f, 0.75f);
-		fonts[0].use(DisplayManager.display);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (Main.screenSize[1] / 2) + 11, "LOADING");
-		fonts[1].use(DisplayManager.display);
-		DisplayManager.renderer.glColor4f(0.0f, 0.0f, 0.0f, 0.5f);
-		DisplayManager.renderer.glDrawStringCenter((Main.screenSize[0] / 2), (Main.screenSize[1] / 2) + 22, "PLEASE WAIT...");
+		DisplayManager.renderer.glFillRect(Main.screenSize[0]/2f-80, Main.screenSize[1]/2f-64, 160, 48, 0, 32, 160, 48);
+		DisplayManager.renderer.glFillRect(Main.screenSize[0]/2f-24, Main.screenSize[1]/2f-loadingTextTranslation, 48, 48, 160, 32, 48, 48);
+
+		DisplayManager.renderer.glFillRect(Main.screenSize[0]-224, Main.screenSize[1]-48, 224, 48, 0, 80, 224, 48);
+		DisplayManager.renderer.glFillRect(Main.screenSize[0]-160-24-224, Main.screenSize[1]-48, 160, 48, 224, 80, 160, 48);
 
 	}
 

src/org/warp/picalculator/gui/screens/MarioScreen.java

@@ -9,12 +9,12 @@ import org.warp.picalculator.Main;
 import org.warp.picalculator.device.Keyboard;
 import org.warp.picalculator.device.Keyboard.Key;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.RAWSkin;
+import org.warp.picalculator.gui.graphicengine.Skin;
 
 public class MarioScreen extends Screen {
 
-	private RAWSkin skin;
-	private RAWSkin groundskin;
+	private Skin skin;
+	private Skin groundskin;
 	private boolean errored;
 	public float[] marioPos = new float[] { 30, 0 };
 	public float[] marioForces = new float[] { 0, 0 };
@@ -35,8 +35,8 @@ public class MarioScreen extends Screen {
 	@Override
 	public void init() {
 		try {
-			skin = DisplayManager.display.loadSkin("marioskin.png");
-			groundskin = DisplayManager.display.loadSkin("marioground.png");
+			skin = DisplayManager.engine.loadSkin("marioskin.png");
+			groundskin = DisplayManager.engine.loadSkin("marioground.png");
 		} catch (IOException e) {
 			e.printStackTrace();
 		}
@@ -125,8 +125,8 @@ public class MarioScreen extends Screen {
 		if (errored) {
 			DisplayManager.renderer.glDrawStringLeft(0, 20, "ERROR");
 		} else {
-			DisplayManager.fonts[0].use(DisplayManager.display);
-			groundskin.use(DisplayManager.display);
+			DisplayManager.fonts[0].use(DisplayManager.engine);
+			groundskin.use(DisplayManager.engine);
 			DisplayManager.renderer.glFillRect(16 * 0, 25 + 25, 16, 16, 0, 0, 16, 16);
 			DisplayManager.renderer.glFillRect(16 * 1, 25 + 25, 16, 16, 0, 0, 16, 16);
 			DisplayManager.renderer.glFillRect(16 * 2, 25 + 25, 16, 16, 0, 0, 16, 16);
@@ -165,7 +165,7 @@ public class MarioScreen extends Screen {
 //			glDrawStringRight(0, Main.screenSize[1]-glGetCurrentFontHeight(), "G");
 
 			//DRAW MARIO
-			skin.use(DisplayManager.display);
+			skin.use(DisplayManager.engine);
 			DisplayManager.renderer.glFillRect(getPosX() - 18, 25 + getPosY(), 35, 27, 35 * (marioSkinPos[0] + 1), 27 * marioSkinPos[1], 35, 27);
 //			PIDisplay.renderer.glDrawSkin(getPosX() - 18, 25 + getPosY(), 35 * (marioSkinPos[0] + (flipped ? 2 : 1)), 27 * marioSkinPos[1], 35 * (marioSkinPos[0] + (flipped ? 1 : 2)), 27 * (marioSkinPos[1] + 1), true);
 		}

src/org/warp/picalculator/gui/screens/MathInputScreen.java

@@ -16,7 +16,7 @@ import org.warp.picalculator.Utils;
 import org.warp.picalculator.device.Keyboard;
 import org.warp.picalculator.device.Keyboard.Key;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
 import org.warp.picalculator.gui.graphicengine.Renderer;
 import org.warp.picalculator.math.AngleMode;
 import org.warp.picalculator.math.Calculator;
@@ -142,7 +142,7 @@ public class MathInputScreen extends Screen {
 		}
 	}
 
-	private static final RAWFont fontBig = Utils.getFont(false);
+	private static final BinaryFont fontBig = Utils.getFont(false);
 
 	@Override
 	public void renderStatusbar() {
@@ -161,7 +161,7 @@ public class MathInputScreen extends Screen {
 
 	@Override
 	public void render() {
-		fontBig.use(DisplayManager.display);
+		fontBig.use(DisplayManager.engine);
 		final int textColor = 0xFF000000;
 		final int padding = 4;
 		DisplayManager.renderer.glColor(textColor);
@@ -221,14 +221,14 @@ public class MathInputScreen extends Screen {
 			int bottomSpacing = 0;
 			for (final Function f : calc.f2) {
 				bottomSpacing += f.getHeight() + 2;
-				f.draw(DisplayManager.display.getWidth() - 2 - f.getWidth(), DisplayManager.display.getHeight() - bottomSpacing);
+				f.draw(DisplayManager.engine.getWidth() - 2 - f.getWidth(), DisplayManager.engine.getHeight() - bottomSpacing);
 			}
 			if (calc.resultsCount > 1 && calc.resultsCount != calc.f2.size()) {
 				final String resultsCountText = calc.resultsCount + " total results".toUpperCase();
 				DisplayManager.renderer.glColor(0xFF9AAEA0);
-				Utils.getFont(true).use(DisplayManager.display);
+				Utils.getFont(true).use(DisplayManager.engine);
 				bottomSpacing += fontBig.getCharacterHeight() + 2;
-				DisplayManager.renderer.glDrawStringRight(DisplayManager.display.getWidth() - 2, DisplayManager.display.getHeight() - bottomSpacing, resultsCountText);
+				DisplayManager.renderer.glDrawStringRight(DisplayManager.engine.getWidth() - 2, DisplayManager.engine.getHeight() - bottomSpacing, resultsCountText);
 			}
 		}
 	}

src/org/warp/picalculator/math/functions/AnteriorFunction.java

@@ -5,7 +5,7 @@ import java.util.ArrayList;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 
 import com.rits.cloning.Cloner;
@@ -83,7 +83,7 @@ public abstract class AnteriorFunction implements Function {
 		variable.setSmall(small);
 		variable.generateGraphics();
 
-		width = DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), getSymbol()) + 1 + getVariable().getWidth();
+		width = Utils.getFont(small).getStringWidth(getSymbol()) + 1 + getVariable().getWidth();
 		height = variable.getHeight();
 		line = variable.getLine();
 	}
@@ -91,10 +91,10 @@ public abstract class AnteriorFunction implements Function {
 	@Override
 	public void draw(int x, int y) {
 		final float h1 = getVariable().getHeight();
-		final int wsegno = DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), getSymbol());
+		final int wsegno = Utils.getFont(small).getStringWidth(getSymbol());
 		final float hsegno = Utils.getFontHeight(small);
 		final float maxh = getHeight();
-		DisplayManager.renderer.glSetFont(Utils.getFont(small));
+		Utils.getFont(small).use(DisplayManager.engine);
 
 		DisplayManager.renderer.glDrawStringLeft(x, (int) Math.floor(y + (maxh - hsegno) / 2), getSymbol());
 		getVariable().draw(x + wsegno + 1, (int) Math.floor(y + (maxh - h1) / 2));

src/org/warp/picalculator/math/functions/Division.java

@@ -5,7 +5,7 @@ import java.util.ArrayList;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 import org.warp.picalculator.math.MathematicalSymbols;
 import org.warp.picalculator.math.rules.FractionsRule1;
@@ -112,7 +112,7 @@ public class Division extends FunctionTwoValues {
 		}
 		int w1 = 0;
 		int h1 = 0;
-		Utils.getFont(small).use(DisplayManager.display);
+		Utils.getFont(small).use(DisplayManager.engine);
 		if (minus) {
 			w1 = Utils.getFont(small).getStringWidth(numerator);
 			h1 = Utils.getFont(small).getCharacterHeight();

src/org/warp/picalculator/math/functions/EmptyNumber.java

@@ -5,7 +5,7 @@ import java.util.List;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 
 public class EmptyNumber implements Function {
@@ -44,17 +44,17 @@ public class EmptyNumber implements Function {
 
 	@Override
 	public int getWidth() {
-		return DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), "␀");
+		return Utils.getFont(small).getStringWidth("␀");
 	}
 
 	@Override
 	public int getHeight() {
-		return Utils.getFont(small).charH;
+		return Utils.getFont(small).getCharacterHeight();
 	}
 
 	@Override
 	public int getLine() {
-		return Utils.getFont(small).charH / 2;
+		return Utils.getFont(small).getCharacterHeight() / 2;
 	}
 
 	@Override

src/org/warp/picalculator/math/functions/FunctionTwoValues.java

@@ -5,7 +5,7 @@ import java.util.ArrayList;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 
 import com.rits.cloning.Cloner;
@@ -112,7 +112,7 @@ public abstract class FunctionTwoValues implements Function {
 		variable1.draw(dx + x, ln - variable1.getLine() + y);
 		dx += 1 + variable1.getWidth();
 		if (drawSignum()) {
-			Utils.getFont(small).use(DisplayManager.display);
+			Utils.getFont(small).use(DisplayManager.engine);
 			DisplayManager.renderer.glDrawStringLeft(dx + x, ln - Utils.getFontHeight(small) / 2 + y, getSymbol());
 			dx += Utils.getFont(small).getStringWidth(getSymbol());
 		}

src/org/warp/picalculator/math/functions/Joke.java

@@ -5,8 +5,8 @@ import java.util.List;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 
 public class Joke implements Function {
@@ -46,31 +46,31 @@ public class Joke implements Function {
 
 	@Override
 	public void draw(int x, int y) {
-		final RAWFont rf = DisplayManager.renderer.getCurrentFont();
+		final BinaryFont rf = DisplayManager.renderer.getCurrentFont();
 		if (jokesFont[joke] >= 0) {
-			DisplayManager.renderer.glSetFont(DisplayManager.fonts[jokesFont[joke]]);
+			DisplayManager.fonts[jokesFont[joke]].use(DisplayManager.engine);
 		}
 		DisplayManager.renderer.glDrawStringLeft(x, y, jokes[joke]);
 		if (jokesFont[joke] >= 0) {
-			DisplayManager.renderer.glSetFont(rf);
+			rf.use(DisplayManager.engine);
 		}
 	}
 
 	@Override
 	public int getWidth() {
 		if (jokesFont[joke] >= 0) {
-			return DisplayManager.renderer.glGetStringWidth(DisplayManager.fonts[jokesFont[joke]], jokes[joke]);
+			return DisplayManager.fonts[jokesFont[joke]].getStringWidth(jokes[joke]);
 		} else {
-			return DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), jokes[joke]);
+			return Utils.getFont(small).getStringWidth(jokes[joke]);
 		}
 	}
 
 	@Override
 	public int getHeight() {
 		if (jokesFont[joke] >= 0) {
-			return DisplayManager.fonts[jokesFont[joke]].charH;
+			return DisplayManager.fonts[jokesFont[joke]].getCharacterHeight();
 		} else {
-			return Utils.getFont(small).charH;
+			return Utils.getFont(small).getCharacterHeight();
 		}
 	}
 

src/org/warp/picalculator/math/functions/Negative.java

@@ -6,7 +6,7 @@ import org.warp.picalculator.Error;
 import org.warp.picalculator.Errors;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 import org.warp.picalculator.math.MathematicalSymbols;
 import org.warp.picalculator.math.rules.ExpandRule1;
@@ -34,7 +34,7 @@ public class Negative extends AnteriorFunction {
 		variable.generateGraphics();
 
 		height = getVariable().getHeight();
-		width = DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), "-") + getVariable().getWidth();
+		width = Utils.getFont(small).getCharacterWidth() /* Width of - */ + getVariable().getWidth();
 		line = getVariable().getLine();
 	}
 

src/org/warp/picalculator/math/functions/Number.java

@@ -10,7 +10,7 @@ import org.nevec.rjm.BigDecimalMath;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.RAWFont;
+import org.warp.picalculator.gui.graphicengine.BinaryFont;
 import org.warp.picalculator.math.Calculator;
 
 import com.rits.cloning.Cloner;
@@ -130,7 +130,7 @@ public class Number implements Function {
 
 	@Override
 	public void draw(int x, int y) {
-		Utils.getFont(small).use(DisplayManager.display);
+		Utils.getFont(small).use(DisplayManager.engine);
 		String t = toString();
 
 		if (t.startsWith("-")) {
@@ -141,12 +141,12 @@ public class Number implements Function {
 			}
 		}
 		if (t.contains("ℯ℮")) {
-			final RAWFont defaultf = Utils.getFont(small);
-			final RAWFont smallf = Utils.getFont(true);
+			final BinaryFont defaultf = Utils.getFont(small);
+			final BinaryFont smallf = Utils.getFont(true);
 			final String s = t.substring(0, t.indexOf("ℯ℮") + 2);
 			final int sw = defaultf.getStringWidth(s);
 			DisplayManager.renderer.glDrawStringLeft(x + 1, y + smallf.getCharacterHeight() - 2, s);
-			smallf.use(DisplayManager.display);
+			smallf.use(DisplayManager.engine);
 			DisplayManager.renderer.glDrawStringLeft(x + 1 + sw - 3, y, t.substring(t.indexOf("ℯ℮") + 2));
 		} else {
 			DisplayManager.renderer.glDrawStringLeft(x + 1, y, t);
@@ -191,8 +191,8 @@ public class Number implements Function {
 			}
 		}
 		if (t.contains("ℯ℮")) {
-			final RAWFont defaultf = Utils.getFont(small);
-			final RAWFont smallf = Utils.getFont(true);
+			final BinaryFont defaultf = Utils.getFont(small);
+			final BinaryFont smallf = Utils.getFont(true);
 			final String s = t.substring(0, t.indexOf("ℯ℮") + 2);
 			final int sw = defaultf.getStringWidth(s);
 			return 1 + sw - 3 + smallf.getStringWidth(t.substring(t.indexOf("ℯ℮") + 2));

src/org/warp/picalculator/math/functions/Root.java

@@ -98,7 +98,9 @@ public class Root extends FunctionTwoValues {
 		getVariable1().draw(x + 1, y);
 		getVariable2().draw(x + 1 + w2 + 2, y + h2 - 2);
 
-		DisplayManager.renderer.glDrawLine(x + 1 + w2 - 2, y + height - 3, x + 1 + w2, y + height);
+		DisplayManager.renderer.glDrawLine(x + 1 + w2 - 2, y + height - 2, x + 1 + w2 - 2, y + height - 2);
+		DisplayManager.renderer.glDrawLine(x + 1 + w2 - 1, y + height - 1, x + 1 + w2 - 1, y + height - 1);
+		DisplayManager.renderer.glDrawLine(x + 1 + w2 - 0, y + height - 0, x + 1 + w2 - 0, y + height - 0);
 		DisplayManager.renderer.glDrawLine(x + 1 + w2, y + height - 1 - hh, x + 1 + w2, y + height - 1);
 		DisplayManager.renderer.glDrawLine(x + 1 + w2 + 1, y + height - 2 - h1, x + 1 + w2 + 1, y + height - 1 - hh - 1);
 		DisplayManager.renderer.glDrawLine(x + 1 + w2 + 1, y + height - h1 - 2, x + 1 + w2 + 2 + w1 + 1, y + height - h1 - 2);

src/org/warp/picalculator/math/functions/Sum.java

@@ -129,7 +129,7 @@ public class Sum extends FunctionTwoValues {
 		int dx = 0;
 		dx += variable1.getWidth();
 		dx += 1;
-		dx += DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), getSymbol());
+		dx += Utils.getFont(small).getStringWidth(getSymbol());
 		return dx += variable2.getWidth();
 	}
 

src/org/warp/picalculator/math/functions/SumSubtraction.java

@@ -6,7 +6,7 @@ import org.warp.picalculator.Error;
 import org.warp.picalculator.Errors;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 import org.warp.picalculator.math.MathematicalSymbols;
 import org.warp.picalculator.math.rules.ExpandRule1;
@@ -94,10 +94,10 @@ public class SumSubtraction extends FunctionTwoValues {
 		int dx = 0;
 		variable1.draw(dx + x, ln - variable1.getLine() + y);
 		dx += variable1.getWidth();
-		DisplayManager.renderer.glSetFont(Utils.getFont(small));
+		Utils.getFont(small).use(DisplayManager.engine);
 		dx += 1;
 		DisplayManager.renderer.glDrawStringLeft(dx + x, ln - Utils.getFontHeight(small) / 2 + y, getSymbol());
-		dx += DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), getSymbol());
+		dx += Utils.getFont(small).getStringWidth(getSymbol());
 		variable2.draw(dx + x, ln - variable2.getLine() + y);
 	}
 
@@ -111,7 +111,7 @@ public class SumSubtraction extends FunctionTwoValues {
 		int dx = 0;
 		dx += variable1.getWidth();
 		dx += 1;
-		dx += DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), getSymbol());
+		dx += Utils.getFont(small).getStringWidth(getSymbol());
 		return dx += variable2.getWidth();
 	}
 

src/org/warp/picalculator/math/functions/Undefined.java

@@ -5,7 +5,7 @@ import java.util.List;
 import org.warp.picalculator.Error;
 import org.warp.picalculator.Utils;
 import org.warp.picalculator.gui.DisplayManager;
-import org.warp.picalculator.gui.graphicengine.cpu.CPUDisplay;
+import org.warp.picalculator.gui.graphicengine.cpu.CPUEngine;
 import org.warp.picalculator.math.Calculator;
 
 public class Undefined implements Function {
@@ -36,14 +36,14 @@ public class Undefined implements Function {
 
 	@Override
 	public void generateGraphics() {
-		width = DisplayManager.renderer.glGetStringWidth(Utils.getFont(small), "UNDEFINED");
+		width = Utils.getFont(small).getStringWidth("UNDEFINED");
 		height = Utils.getFontHeight(small);
 		line = height / 2;
 	}
 
 	@Override
 	public void draw(int x, int y) {
-		DisplayManager.renderer.glSetFont(Utils.getFont(small));
+		Utils.getFont(small).use(DisplayManager.engine);
 		DisplayManager.renderer.glDrawStringLeft(x, y, "UNDEFINED");
 	}
 

src/org/warp/picalculator/math/functions/Variable.java

@@ -62,7 +62,7 @@ public class Variable implements Function {
 
 	@Override
 	public void draw(int x, int y) {
-		Utils.getFont(small).use(DisplayManager.display);
+		Utils.getFont(small).use(DisplayManager.engine);
 		DisplayManager.renderer.glDrawStringLeft(x + 1, y, toString());
 	}
 

src/org/warp/picalculator/math/functions/equations/EquationsSystemPart.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.warp.picalculator.Error;
+import org.warp.picalculator.gui.DisplayManager;
 import org.warp.picalculator.math.Calculator;
 import org.warp.picalculator.math.MathematicalSymbols;
 import org.warp.picalculator.math.functions.AnteriorFunction;
@@ -17,7 +18,7 @@ public class EquationsSystemPart extends AnteriorFunction {
 
 	@Override
 	protected Function NewInstance(Calculator root, Function value) {
-		return new EquationsSystemPart(root, value);
+		return new EquationsSystemPart(root, (Equation) value);
 	}
 
 	@Override
@@ -42,13 +43,13 @@ public class EquationsSystemPart extends AnteriorFunction {
 		final int spazioSotto = (h - 3 - 2) / 2 + paddingTop;
 		final int spazioSopra = h - spazioSotto;
 		variable.draw(x + 5, y + paddingTop);
-		glDrawLine(x + 2, y + 0, x + 3, y + 0);
-		glDrawLine(x + 1, y + 1, x + 1, y + spazioSotto / 2);
-		glDrawLine(x + 2, y + spazioSotto / 2 + 1, x + 2, y + spazioSotto - 1);
-		glDrawLine(x + 0, y + spazioSotto, x + 1, y + spazioSotto);
-		glDrawLine(x + 2, y + spazioSotto + 1, x + 2, y + spazioSotto + spazioSopra / 2 - 1);
-		glDrawLine(x + 1, y + spazioSotto + spazioSopra / 2, x + 1, y + h - 1);
-		glDrawLine(x + 2, y + h, x + 3, y + h);
+		DisplayManager.renderer.glDrawLine(x + 2, y + 0, x + 3, y + 0);
+		DisplayManager.renderer.glDrawLine(x + 1, y + 1, x + 1, y + spazioSotto / 2);
+		DisplayManager.renderer.glDrawLine(x + 2, y + spazioSotto / 2 + 1, x + 2, y + spazioSotto - 1);
+		DisplayManager.renderer.glDrawLine(x + 0, y + spazioSotto, x + 1, y + spazioSotto);
+		DisplayManager.renderer.glDrawLine(x + 2, y + spazioSotto + 1, x + 2, y + spazioSotto + spazioSopra / 2 - 1);
+		DisplayManager.renderer.glDrawLine(x + 1, y + spazioSotto + spazioSopra / 2, x + 1, y + h - 1);
+		DisplayManager.renderer.glDrawLine(x + 2, y + h, x + 3, y + h);
 	}
 
 	@Override