diff --git a/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java b/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
index 13d7bcf3..bbef0388 100644
--- a/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
+++ b/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
@@ -2,6 +2,7 @@
  * Copyright 2013 Hannes Janetzek
  * Copyright 2016-2017 devemux86
  * Copyright 2017 nebular
+ * Copyright 2017 Longri
  *
  * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
  *
@@ -58,6 +59,14 @@ public class AndroidCanvas implements Canvas {
         }
     }
 
+    @Override
+    public void drawBitmap(Bitmap bitmap) {
+        android.graphics.Bitmap scaledBitmap = android.graphics.Bitmap.createScaledBitmap(
+                ((AndroidBitmap) bitmap).mBitmap, canvas.getWidth(), canvas.getHeight(), true);
+        canvas.drawBitmap(scaledBitmap, 0, 0, null);
+        scaledBitmap.recycle();
+    }
+
     @Override
     public void drawBitmap(Bitmap bitmap, float x, float y) {
         canvas.drawBitmap(((AndroidBitmap) bitmap).mBitmap, x, y, null);
diff --git a/vtm-desktop/src/org/oscim/awt/AwtCanvas.java b/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
index 7b50faaa..4259b140 100644
--- a/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
+++ b/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
@@ -28,6 +28,7 @@ import org.oscim.backend.canvas.Paint;
 import java.awt.AlphaComposite;
 import java.awt.Composite;
 import java.awt.Graphics2D;
+import java.awt.Image;
 import java.awt.RenderingHints;
 import java.awt.Shape;
 import java.awt.font.TextLayout;
@@ -127,6 +128,12 @@ public class AwtCanvas implements Canvas {
         }
     }
 
+    @Override
+    public void drawBitmap(Bitmap bitmap) {
+        Image scaledImage = ((AwtBitmap) bitmap).bitmap.getScaledInstance(this.bitmap.getWidth(), this.bitmap.getHeight(), Image.SCALE_DEFAULT);
+        this.canvas.drawImage(scaledImage, 0, 0, this.bitmap.getWidth(), this.bitmap.getHeight(), null);
+    }
+
     @Override
     public void drawBitmap(Bitmap bitmap, float x, float y) {
         BufferedImage src = ((AwtBitmap) bitmap).bitmap;
diff --git a/vtm-ios-example/src/org/oscim/ios/test/ExampleLauncher.java b/vtm-ios-example/src/org/oscim/ios/test/ExampleLauncher.java
index eb880d80..964d985a 100644
--- a/vtm-ios-example/src/org/oscim/ios/test/ExampleLauncher.java
+++ b/vtm-ios-example/src/org/oscim/ios/test/ExampleLauncher.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Longri
+ * Copyright 2016-2017 Longri
  * Copyright 2016 devemux86
  *
  * This program is free software: you can redistribute it and/or modify it under the
@@ -19,6 +19,7 @@ import com.badlogic.gdx.backends.iosrobovm.IOSApplication;
 import com.badlogic.gdx.backends.iosrobovm.IOSApplicationConfiguration;
 
 import org.oscim.backend.CanvasAdapter;
+import org.oscim.theme.ThemeLoader;
 import org.robovm.apple.foundation.NSAutoreleasePool;
 import org.robovm.apple.glkit.GLKViewDrawableStencilFormat;
 import org.robovm.apple.uikit.UIApplication;
@@ -37,12 +38,12 @@ public class ExampleLauncher extends IOSApplication.Delegate {
         float scale = (float) (getIosVersion() >= 8 ? UIScreen.getMainScreen().getNativeScale() : UIScreen.getMainScreen().getScale());
         CanvasAdapter.dpi *= scale;
 
-//        IOSMapApp iosMapApp = new IOSMapApp();
+//        IOSMapApp  iosMapApp = new IOSMapApp();
+        IOSLineTexTest iosMapApp = new IOSLineTexTest();
 //        IOSMapAppCluster iosMapApp = new IOSMapAppCluster();
 
-        IOSLineTexTest iosMapApp = new IOSLineTexTest();
-
 
+        ThemeLoader.POT_TEXTURES = true;
         iosMapApp.init();
 
         return new IOSApplication(iosMapApp, config);
diff --git a/vtm-ios-example/src/org/oscim/ios/test/IOSLineTexTest.java b/vtm-ios-example/src/org/oscim/ios/test/IOSLineTexTest.java
index 5e017814..7f4ce361 100644
--- a/vtm-ios-example/src/org/oscim/ios/test/IOSLineTexTest.java
+++ b/vtm-ios-example/src/org/oscim/ios/test/IOSLineTexTest.java
@@ -1,6 +1,6 @@
 /*
  * Copyright 2013 Hannes Janetzek
- * Copyright 2016 Longri
+ * Copyright 2016-2017 Longri
  *
  * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
  *
@@ -17,7 +17,6 @@
  */
 package org.oscim.ios.test;
 
-import org.oscim.backend.CanvasAdapter;
 import org.oscim.backend.GLAdapter;
 import org.oscim.backend.canvas.Color;
 import org.oscim.core.GeoPoint;
@@ -35,6 +34,7 @@ import org.oscim.layers.vector.geometries.Style;
 import org.oscim.map.Map;
 import org.oscim.renderer.bucket.TextureItem;
 import org.oscim.theme.VtmThemes;
+import org.oscim.theme.XmlThemeBuilder;
 import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
 
 import java.util.ArrayList;
@@ -63,7 +63,8 @@ public class IOSLineTexTest extends GdxMap {
 
         mMap.setMapPosition(0, 0, 1 << 2);
 
-        tex = new TextureItem(CanvasAdapter.getBitmapAsset("", "patterns/pike.png"));
+        tex = XmlThemeBuilder.loadTexture("", "patterns/pike.png", 0, 0, 100);
+//        tex = new TextureItem(CanvasAdapter.getBitmapAsset("", "patterns/pike.png"));
         tex.mipmap = true;
 
         createLayers(1, true);
diff --git a/vtm-ios-example/src/org/oscim/ios/test/IOSMapApp.java b/vtm-ios-example/src/org/oscim/ios/test/IOSMapApp.java
index 37769467..2caa84db 100644
--- a/vtm-ios-example/src/org/oscim/ios/test/IOSMapApp.java
+++ b/vtm-ios-example/src/org/oscim/ios/test/IOSMapApp.java
@@ -1,6 +1,6 @@
 /*
  * Copyright 2013 Hannes Janetzek
- * Copyright 2016 Longri
+ * Copyright 2016-2017 Longri
  *
  * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
  *
@@ -69,7 +69,7 @@ public class IOSMapApp extends GdxMap {
         renderer.setOffset(5, 0);
         map.layers().add(mapScaleBarLayer);
 
-        map.setTheme(VtmThemes.DEFAULT);
+        map.setTheme(VtmThemes.OSMARENDER);
         map.setMapPosition(53.075, 8.808, 1 << 17);
     }
 }
diff --git a/vtm-ios/src/org/oscim/ios/backend/IosCanvas.java b/vtm-ios/src/org/oscim/ios/backend/IosCanvas.java
index d5ccb066..8087742e 100644
--- a/vtm-ios/src/org/oscim/ios/backend/IosCanvas.java
+++ b/vtm-ios/src/org/oscim/ios/backend/IosCanvas.java
@@ -83,6 +83,15 @@ public class IosCanvas implements Canvas {
         iosFill.drawLine(this.cgBitmapContext, string, x, y);
     }
 
+    @Override
+    public void drawBitmap(Bitmap bitmap) {
+        CGRect rect = new CGRect(0, 0, this.cgBitmapContext.getWidth(), this.cgBitmapContext.getHeight());
+        this.cgBitmapContext.saveGState();
+        this.cgBitmapContext.translateCTM(0, 0);
+        this.cgBitmapContext.drawImage(rect, ((IosBitmap) bitmap).cgBitmapContext.toImage());
+        this.cgBitmapContext.restoreGState();
+    }
+
     @Override
     public void drawBitmap(Bitmap bitmap, float x, float y) {
         this.cgBitmapContext.saveGState();
diff --git a/vtm-playground/src/org/oscim/test/MapsforgeLine_NPOT_Test.java b/vtm-playground/src/org/oscim/test/MapsforgeLine_NPOT_Test.java
new file mode 100644
index 00000000..e45f5294
--- /dev/null
+++ b/vtm-playground/src/org/oscim/test/MapsforgeLine_NPOT_Test.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2017 Longri
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.test;
+
+import org.oscim.gdx.GdxMap;
+import org.oscim.gdx.GdxMapApp;
+import org.oscim.layers.TileGridLayer;
+import org.oscim.layers.tile.vector.VectorTileLayer;
+import org.oscim.renderer.BitmapRenderer;
+import org.oscim.renderer.GLViewport;
+import org.oscim.scalebar.DefaultMapScaleBar;
+import org.oscim.scalebar.ImperialUnitAdapter;
+import org.oscim.scalebar.MapScaleBar;
+import org.oscim.scalebar.MapScaleBarLayer;
+import org.oscim.scalebar.MetricUnitAdapter;
+import org.oscim.theme.VtmThemes;
+import org.oscim.tiling.source.mapfile.MapFileTileSource;
+
+import java.io.File;
+
+public class MapsforgeLine_NPOT_Test extends GdxMap {
+
+    private static File mapFile;
+
+    @Override
+    public void createLayers() {
+        MapFileTileSource tileSource = new MapFileTileSource();
+        tileSource.setMapFile(mapFile.getAbsolutePath());
+        tileSource.setPreferredLanguage("en");
+
+        VectorTileLayer l = mMap.setBaseMap(tileSource);
+        mMap.setTheme(VtmThemes.DEFAULT);
+        mMap.layers().add(new TileGridLayer(mMap));
+
+        DefaultMapScaleBar mapScaleBar = new DefaultMapScaleBar(mMap);
+        mapScaleBar.setScaleBarMode(DefaultMapScaleBar.ScaleBarMode.BOTH);
+        mapScaleBar.setDistanceUnitAdapter(MetricUnitAdapter.INSTANCE);
+        mapScaleBar.setSecondaryDistanceUnitAdapter(ImperialUnitAdapter.INSTANCE);
+        mapScaleBar.setScaleBarPosition(MapScaleBar.ScaleBarPosition.BOTTOM_LEFT);
+
+        MapScaleBarLayer mapScaleBarLayer = new MapScaleBarLayer(mMap, mapScaleBar);
+        BitmapRenderer renderer = mapScaleBarLayer.getRenderer();
+        renderer.setPosition(GLViewport.Position.BOTTOM_LEFT);
+        renderer.setOffset(5, 0);
+        mMap.layers().add(mapScaleBarLayer);
+
+        //https://www.google.de/maps/@52.5808431,13.4000501,19.5z
+        mMap.setMapPosition(52.5808431, 13.4000501, 1 << 21);
+    }
+
+    private static File getMapFile(String[] args) {
+        if (args.length == 0) {
+            throw new IllegalArgumentException("missing argument: <mapFile>");
+        }
+
+        File file = new File(args[0]);
+        if (!file.exists()) {
+            throw new IllegalArgumentException("file does not exist: " + file);
+        } else if (!file.isFile()) {
+            throw new IllegalArgumentException("not a file: " + file);
+        } else if (!file.canRead()) {
+            throw new IllegalArgumentException("cannot read file: " + file);
+        }
+        return file;
+    }
+
+    public static void main(String[] args) {
+        mapFile = getMapFile(args);
+
+        GdxMapApp.init();
+        GdxMapApp.run(new MapsforgeLine_NPOT_Test());
+    }
+}
\ No newline at end of file
diff --git a/vtm-playground/src/org/oscim/test/MapsforgeLine_POT_Test.java b/vtm-playground/src/org/oscim/test/MapsforgeLine_POT_Test.java
new file mode 100644
index 00000000..c24a5c81
--- /dev/null
+++ b/vtm-playground/src/org/oscim/test/MapsforgeLine_POT_Test.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2017 Longri
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.test;
+
+import org.oscim.gdx.GdxMap;
+import org.oscim.gdx.GdxMapApp;
+import org.oscim.layers.TileGridLayer;
+import org.oscim.layers.tile.vector.VectorTileLayer;
+import org.oscim.renderer.BitmapRenderer;
+import org.oscim.renderer.GLViewport;
+import org.oscim.scalebar.DefaultMapScaleBar;
+import org.oscim.scalebar.ImperialUnitAdapter;
+import org.oscim.scalebar.MapScaleBar;
+import org.oscim.scalebar.MapScaleBarLayer;
+import org.oscim.scalebar.MetricUnitAdapter;
+import org.oscim.theme.ThemeLoader;
+import org.oscim.theme.VtmThemes;
+import org.oscim.tiling.source.mapfile.MapFileTileSource;
+
+import java.io.File;
+
+public class MapsforgeLine_POT_Test extends GdxMap {
+
+    private static File mapFile;
+
+    @Override
+    public void createLayers() {
+        ThemeLoader.POT_TEXTURES = true;
+
+        MapFileTileSource tileSource = new MapFileTileSource();
+        tileSource.setMapFile(mapFile.getAbsolutePath());
+        tileSource.setPreferredLanguage("en");
+
+        VectorTileLayer l = mMap.setBaseMap(tileSource);
+        mMap.setTheme(VtmThemes.DEFAULT);
+        mMap.layers().add(new TileGridLayer(mMap));
+
+        DefaultMapScaleBar mapScaleBar = new DefaultMapScaleBar(mMap);
+        mapScaleBar.setScaleBarMode(DefaultMapScaleBar.ScaleBarMode.BOTH);
+        mapScaleBar.setDistanceUnitAdapter(MetricUnitAdapter.INSTANCE);
+        mapScaleBar.setSecondaryDistanceUnitAdapter(ImperialUnitAdapter.INSTANCE);
+        mapScaleBar.setScaleBarPosition(MapScaleBar.ScaleBarPosition.BOTTOM_LEFT);
+
+        MapScaleBarLayer mapScaleBarLayer = new MapScaleBarLayer(mMap, mapScaleBar);
+        BitmapRenderer renderer = mapScaleBarLayer.getRenderer();
+        renderer.setPosition(GLViewport.Position.BOTTOM_LEFT);
+        renderer.setOffset(5, 0);
+        mMap.layers().add(mapScaleBarLayer);
+
+        //https://www.google.de/maps/@52.5808431,13.4000501,19.5z
+        mMap.setMapPosition(52.5808431, 13.4000501, 1 << 21);
+    }
+
+    private static File getMapFile(String[] args) {
+        if (args.length == 0) {
+            throw new IllegalArgumentException("missing argument: <mapFile>");
+        }
+
+        File file = new File(args[0]);
+        if (!file.exists()) {
+            throw new IllegalArgumentException("file does not exist: " + file);
+        } else if (!file.isFile()) {
+            throw new IllegalArgumentException("not a file: " + file);
+        } else if (!file.canRead()) {
+            throw new IllegalArgumentException("cannot read file: " + file);
+        }
+        return file;
+    }
+
+    public static void main(String[] args) {
+        mapFile = getMapFile(args);
+
+        GdxMapApp.init();
+        GdxMapApp.run(new MapsforgeLine_POT_Test());
+    }
+}
\ No newline at end of file
diff --git a/vtm-web/src/org/oscim/gdx/client/GwtCanvas.java b/vtm-web/src/org/oscim/gdx/client/GwtCanvas.java
index 792cac92..654956de 100644
--- a/vtm-web/src/org/oscim/gdx/client/GwtCanvas.java
+++ b/vtm-web/src/org/oscim/gdx/client/GwtCanvas.java
@@ -90,6 +90,11 @@ public class GwtCanvas implements org.oscim.backend.canvas.Canvas {
         }
     }
 
+    @Override
+    public void drawBitmap(Bitmap bitmap) {
+        // TODO
+    }
+
     @Override
     public void drawBitmap(Bitmap bitmap, float x, float y) {
         // TODO
diff --git a/vtm/src/org/oscim/backend/canvas/Canvas.java b/vtm/src/org/oscim/backend/canvas/Canvas.java
index 7eefe492..f0900055 100644
--- a/vtm/src/org/oscim/backend/canvas/Canvas.java
+++ b/vtm/src/org/oscim/backend/canvas/Canvas.java
@@ -2,6 +2,7 @@
  * Copyright 2013 Hannes Janetzek
  * Copyright 2016-2017 devemux86
  * Copyright 2017 nebular
+ * Copyright 2017 Longri
  *
  * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
  *
@@ -38,6 +39,11 @@ public interface Canvas {
      */
     void drawText(String string, float x, float y, Paint fill, Paint stroke);
 
+    /**
+     * Draw Bitmap to fill target by stretching.
+     */
+    void drawBitmap(Bitmap bitmap);
+
     /**
      * Draw Bitmap to Canvas.
      */
diff --git a/vtm/src/org/oscim/theme/ThemeLoader.java b/vtm/src/org/oscim/theme/ThemeLoader.java
index 91974e37..be58129d 100644
--- a/vtm/src/org/oscim/theme/ThemeLoader.java
+++ b/vtm/src/org/oscim/theme/ThemeLoader.java
@@ -24,6 +24,7 @@ import org.oscim.theme.IRenderTheme.ThemeException;
 public class ThemeLoader {
 
     public static boolean USE_ATLAS;
+    public static boolean POT_TEXTURES;
 
     public static IRenderTheme load(String renderThemePath) throws ThemeException {
         return load(new ExternalRenderTheme(renderThemePath));
diff --git a/vtm/src/org/oscim/theme/XmlThemeBuilder.java b/vtm/src/org/oscim/theme/XmlThemeBuilder.java
index fa3e2f1b..6e19cd4e 100644
--- a/vtm/src/org/oscim/theme/XmlThemeBuilder.java
+++ b/vtm/src/org/oscim/theme/XmlThemeBuilder.java
@@ -23,6 +23,7 @@ package org.oscim.theme;
 import org.oscim.backend.CanvasAdapter;
 import org.oscim.backend.XMLReaderAdapter;
 import org.oscim.backend.canvas.Bitmap;
+import org.oscim.backend.canvas.Canvas;
 import org.oscim.backend.canvas.Color;
 import org.oscim.backend.canvas.Paint.Cap;
 import org.oscim.backend.canvas.Paint.FontFamily;
@@ -49,6 +50,7 @@ import org.oscim.theme.styles.SymbolStyle;
 import org.oscim.theme.styles.SymbolStyle.SymbolBuilder;
 import org.oscim.theme.styles.TextStyle;
 import org.oscim.theme.styles.TextStyle.TextBuilder;
+import org.oscim.utils.math.MathUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.xml.sax.Attributes;
@@ -559,7 +561,7 @@ public class XmlThemeBuilder extends DefaultHandler {
                 logUnknownAttribute(elementName, name, value, i);
         }
 
-        b.texture = loadTexture(src, b.symbolWidth, b.symbolHeight, b.symbolPercent);
+        b.texture = loadTexture(mTheme.getRelativePathPrefix(), src, b.symbolWidth, b.symbolHeight, b.symbolPercent);
         /*if (b.texture != null)
             b.texture.mipmap = true;*/
 
@@ -652,19 +654,32 @@ public class XmlThemeBuilder extends DefaultHandler {
                 logUnknownAttribute(elementName, name, value, i);
         }
 
-        b.texture = loadTexture(src, b.symbolWidth, b.symbolHeight, b.symbolPercent);
+        b.texture = loadTexture(mTheme.getRelativePathPrefix(), src, b.symbolWidth, b.symbolHeight, b.symbolPercent);
 
         return b.build();
     }
 
-    private TextureItem loadTexture(String src, int width, int height, int percent) {
+    public static TextureItem loadTexture(String relativePathPrefix, String src, int width, int height, int percent) {
         if (src == null || src.length() == 0)
             return null;
 
         try {
-            Bitmap bitmap = CanvasAdapter.getBitmapAsset(mTheme.getRelativePathPrefix(), src, width, height, percent);
+            Bitmap bitmap = CanvasAdapter.getBitmapAsset(relativePathPrefix, src, width, height, percent);
             if (bitmap != null) {
                 log.debug("loading {}", src);
+
+                if (ThemeLoader.POT_TEXTURES) {
+                    int potWidth = MathUtils.nextPowerOfTwo(bitmap.getWidth());
+                    int potHeight = MathUtils.nextPowerOfTwo(bitmap.getHeight());
+                    if (potWidth != bitmap.getWidth() || potHeight != bitmap.getHeight()) {
+                        log.debug("POT texture: {}x{} -> {}x{}", bitmap.getWidth(), bitmap.getHeight(), potWidth, potHeight);
+                        Bitmap potBitmap = CanvasAdapter.newBitmap(potWidth, potHeight, 0);
+                        Canvas canvas = CanvasAdapter.newCanvas();
+                        canvas.setBitmap(potBitmap);
+                        canvas.drawBitmap(bitmap);
+                        bitmap = potBitmap;
+                    }
+                }
                 return new TextureItem(bitmap, true);
             }
         } catch (Exception e) {