diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/BasicTexture.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/BasicTexture.java
index 0f3efb7..7270e88 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/BasicTexture.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/BasicTexture.java
@@ -46,8 +46,6 @@
     protected int mTextureWidth;
     protected int mTextureHeight;
 
-    private boolean mHasBorder;
-
     protected GLCanvas mCanvasRef = null;
     private static WeakHashMap<BasicTexture, Object> sAllTextures
             = new WeakHashMap<BasicTexture, Object>();
@@ -85,10 +83,6 @@
         }
     }
 
-    public boolean isFlippedVertically() {
-      return false;
-    }
-
     public int getId() {
         return mId;
     }
@@ -113,25 +107,6 @@
         return mTextureHeight;
     }
 
-    // Returns true if the texture has one pixel transparent border around the
-    // actual content. This is used to avoid jigged edges.
-    //
-    // The jigged edges appear because we use GL_CLAMP_TO_EDGE for texture wrap
-    // mode (GL_CLAMP is not available in OpenGL ES), so a pixel partially
-    // covered by the texture will use the color of the edge texel. If we add
-    // the transparent border, the color of the edge texel will be mixed with
-    // appropriate amount of transparent.
-    //
-    // Currently our background is black, so we can draw the thumbnails without
-    // enabling blending.
-    public boolean hasBorder() {
-        return mHasBorder;
-    }
-
-    protected void setBorder(boolean hasBorder) {
-        mHasBorder = hasBorder;
-    }
-
     @Override
     public void draw(GLCanvas canvas, int x, int y) {
         canvas.drawTexture(this, x, y, getWidth(), getHeight());
@@ -146,9 +121,6 @@
     // It should make sure the data is uploaded to GL memory.
     abstract protected boolean onBind(GLCanvas canvas);
 
-    // Returns the GL texture target for this texture (e.g. GL_TEXTURE_2D).
-    abstract protected int getTarget();
-
     public boolean isLoaded() {
         return mState == STATE_LOADED;
     }
@@ -185,13 +157,6 @@
         sInFinalizer.set(null);
     }
 
-    // This is for deciding if we can call Bitmap's recycle().
-    // We cannot call Bitmap's recycle() in finalizer because at that point
-    // the finalizer of Bitmap may already be called so recycle() will crash.
-    public static boolean inFinalizer() {
-        return sInFinalizer.get() != null;
-    }
-
     public static void yieldAllTextures() {
         synchronized (sAllTextures) {
             for (BasicTexture t : sAllTextures.keySet()) {
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/BitmapTexture.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/BitmapTexture.java
index f8b01cb..bb69b68 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/BitmapTexture.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/BitmapTexture.java
@@ -29,11 +29,7 @@
     protected Bitmap mContentBitmap;
 
     public BitmapTexture(Bitmap bitmap) {
-        this(bitmap, false);
-    }
-
-    public BitmapTexture(Bitmap bitmap, boolean hasBorder) {
-        super(hasBorder);
+        super();
         Utils.assertTrue(bitmap != null && !bitmap.isRecycled());
         mContentBitmap = bitmap;
     }
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLCanvas.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLCanvas.java
index 5b07477..2bda8d2 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLCanvas.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLCanvas.java
@@ -17,7 +17,6 @@
 package com.android.gallery3d.glrenderer;
 
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.graphics.RectF;
 
 //
@@ -40,36 +39,14 @@
     // Clear the drawing buffers. This should only be used by GLRoot.
     public abstract void clearBuffer();
 
-    public abstract void clearBuffer(float[] argb);
-
-    // Sets and gets the current alpha, alpha must be in [0, 1].
-    public abstract void setAlpha(float alpha);
-
-    public abstract float getAlpha();
-
-    // (current alpha) = (current alpha) * alpha
-    public abstract void multiplyAlpha(float alpha);
-
-    // Change the current transform matrix.
-    public abstract void translate(float x, float y, float z);
-
     public abstract void translate(float x, float y);
 
-    public abstract void scale(float sx, float sy, float sz);
-
     public abstract void rotate(float angle, float x, float y, float z);
 
-    public abstract void multiplyMatrix(float[] mMatrix, int offset);
-
-    // Pushes the configuration state (matrix, and alpha) onto
-    // a private stack.
-    public abstract void save();
-
     // Same as save(), but only save those specified in saveFlags.
     public abstract void save(int saveFlags);
 
     public static final int SAVE_FLAG_ALL = 0xFFFFFFFF;
-    public static final int SAVE_FLAG_ALPHA = 0x01;
     public static final int SAVE_FLAG_MATRIX = 0x02;
 
     // Pops from the top of the stack as current configuration state (matrix,
@@ -78,64 +55,22 @@
     // last save call.
     public abstract void restore();
 
-    // Draws a line using the specified paint from (x1, y1) to (x2, y2).
-    // (Both end points are included).
-    public abstract void drawLine(float x1, float y1, float x2, float y2, GLPaint paint);
-
-    // Draws a rectangle using the specified paint from (x1, y1) to (x2, y2).
-    // (Both end points are included).
-    public abstract void drawRect(float x1, float y1, float x2, float y2, GLPaint paint);
-
-    // Fills the specified rectangle with the specified color.
-    public abstract void fillRect(float x, float y, float width, float height, int color);
-
     // Draws a texture to the specified rectangle.
-    public abstract void drawTexture(
-            BasicTexture texture, int x, int y, int width, int height);
-
-    public abstract void drawMesh(BasicTexture tex, int x, int y, int xyBuffer,
-            int uvBuffer, int indexBuffer, int indexCount);
+    public abstract void drawTexture(BasicTexture texture, int x, int y, int width, int height);
 
     // Draws the source rectangle part of the texture to the target rectangle.
     public abstract void drawTexture(BasicTexture texture, RectF source, RectF target);
 
-    // Draw a texture with a specified texture transform.
-    public abstract void drawTexture(BasicTexture texture, float[] mTextureTransform,
-                int x, int y, int w, int h);
-
-    // Draw two textures to the specified rectangle. The actual texture used is
-    // from * (1 - ratio) + to * ratio
-    // The two textures must have the same size.
-    public abstract void drawMixed(BasicTexture from, int toColor,
-            float ratio, int x, int y, int w, int h);
-
-    // Draw a region of a texture and a specified color to the specified
-    // rectangle. The actual color used is from * (1 - ratio) + to * ratio.
-    // The region of the texture is defined by parameter "src". The target
-    // rectangle is specified by parameter "target".
-    public abstract void drawMixed(BasicTexture from, int toColor,
-            float ratio, RectF src, RectF target);
-
     // Unloads the specified texture from the canvas. The resource allocated
     // to draw the texture will be released. The specified texture will return
     // to the unloaded state. This function should be called only from
     // BasicTexture or its descendant
     public abstract boolean unloadTexture(BasicTexture texture);
 
-    // Delete the specified buffer object, similar to unloadTexture.
-    public abstract void deleteBuffer(int bufferId);
-
     // Delete the textures and buffers in GL side. This function should only be
     // called in the GL thread.
     public abstract void deleteRecycledResources();
 
-    // Dump statistics information and clear the counters. For debug only.
-    public abstract void dumpStatisticsAndClear();
-
-    public abstract void beginRenderTarget(RawTexture texture);
-
-    public abstract void endRenderTarget();
-
     /**
      * Sets texture parameters to use GL_CLAMP_TO_EDGE for both
      * GL_TEXTURE_WRAP_S and GL_TEXTURE_WRAP_T. Sets texture parameters to be
@@ -185,31 +120,4 @@
      * @return The buffer ID that was generated.
      */
     public abstract int uploadBuffer(java.nio.FloatBuffer buffer);
-
-    /**
-     * Generates buffers and uploads the element array buffer data.
-     *
-     * @param buffer The buffer to upload
-     * @return The buffer ID that was generated.
-     */
-    public abstract int uploadBuffer(java.nio.ByteBuffer buffer);
-
-    /**
-     * After LightCycle makes GL calls, this method is called to restore the GL
-     * configuration to the one expected by GLCanvas.
-     */
-    public abstract void recoverFromLightCycle();
-
-    /**
-     * Gets the bounds given by x, y, width, and height as well as the internal
-     * matrix state. There is no special handling for non-90-degree rotations.
-     * It only considers the lower-left and upper-right corners as the bounds.
-     *
-     * @param bounds The output bounds to write to.
-     * @param x The left side of the input rectangle.
-     * @param y The bottom of the input rectangle.
-     * @param width The width of the input rectangle.
-     * @param height The height of the input rectangle.
-     */
-    public abstract void getBounds(Rect bounds, int x, int y, int width, int height);
 }
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLES20Canvas.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLES20Canvas.java
index 933260b..0da3bae 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLES20Canvas.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLES20Canvas.java
@@ -16,7 +16,6 @@
 package com.android.gallery3d.glrenderer;
 
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.graphics.RectF;
 import android.opengl.GLES20;
 import android.opengl.GLUtils;
@@ -27,24 +26,22 @@
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.FloatBuffer;
-import java.util.ArrayList;
 import java.util.Arrays;
 
+import javax.microedition.khronos.opengles.GL11;
+
 public class GLES20Canvas implements GLCanvas {
     // ************** Constants **********************
     private static final String TAG = GLES20Canvas.class.getSimpleName();
     private static final int FLOAT_SIZE = Float.SIZE / Byte.SIZE;
-    private static final float OPAQUE_ALPHA = 0.95f;
 
     private static final int COORDS_PER_VERTEX = 2;
     private static final int VERTEX_STRIDE = COORDS_PER_VERTEX * FLOAT_SIZE;
 
     private static final int COUNT_FILL_VERTEX = 4;
-    private static final int COUNT_LINE_VERTEX = 2;
-    private static final int COUNT_RECT_VERTEX = 4;
     private static final int OFFSET_FILL_RECT = 0;
-    private static final int OFFSET_DRAW_LINE = OFFSET_FILL_RECT + COUNT_FILL_VERTEX;
-    private static final int OFFSET_DRAW_RECT = OFFSET_DRAW_LINE + COUNT_LINE_VERTEX;
+
+    private static final int GL_TARGET = GL11.GL_TEXTURE_2D;
 
     private static final float[] BOX_COORDINATES = {
             0, 0, // Fill rectangle
@@ -59,33 +56,11 @@
             1, 0,
     };
 
-    private static final float[] BOUNDS_COORDINATES = {
-        0, 0, 0, 1,
-        1, 1, 0, 1,
-    };
-
     private static final String POSITION_ATTRIBUTE = "aPosition";
-    private static final String COLOR_UNIFORM = "uColor";
     private static final String MATRIX_UNIFORM = "uMatrix";
     private static final String TEXTURE_MATRIX_UNIFORM = "uTextureMatrix";
     private static final String TEXTURE_SAMPLER_UNIFORM = "uTextureSampler";
     private static final String ALPHA_UNIFORM = "uAlpha";
-    private static final String TEXTURE_COORD_ATTRIBUTE = "aTextureCoordinate";
-
-    private static final String DRAW_VERTEX_SHADER = ""
-            + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
-            + "attribute vec2 " + POSITION_ATTRIBUTE + ";\n"
-            + "void main() {\n"
-            + "  vec4 pos = vec4(" + POSITION_ATTRIBUTE + ", 0.0, 1.0);\n"
-            + "  gl_Position = " + MATRIX_UNIFORM + " * pos;\n"
-            + "}\n";
-
-    private static final String DRAW_FRAGMENT_SHADER = ""
-            + "precision mediump float;\n"
-            + "uniform vec4 " + COLOR_UNIFORM + ";\n"
-            + "void main() {\n"
-            + "  gl_FragColor = " + COLOR_UNIFORM + ";\n"
-            + "}\n";
 
     private static final String TEXTURE_VERTEX_SHADER = ""
             + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
@@ -98,17 +73,6 @@
             + "  vTextureCoord = (" + TEXTURE_MATRIX_UNIFORM + " * pos).xy;\n"
             + "}\n";
 
-    private static final String MESH_VERTEX_SHADER = ""
-            + "uniform mat4 " + MATRIX_UNIFORM + ";\n"
-            + "attribute vec2 " + POSITION_ATTRIBUTE + ";\n"
-            + "attribute vec2 " + TEXTURE_COORD_ATTRIBUTE + ";\n"
-            + "varying vec2 vTextureCoord;\n"
-            + "void main() {\n"
-            + "  vec4 pos = vec4(" + POSITION_ATTRIBUTE + ", 0.0, 1.0);\n"
-            + "  gl_Position = " + MATRIX_UNIFORM + " * pos;\n"
-            + "  vTextureCoord = " + TEXTURE_COORD_ATTRIBUTE + ";\n"
-            + "}\n";
-
     private static final String TEXTURE_FRAGMENT_SHADER = ""
             + "precision mediump float;\n"
             + "varying vec2 vTextureCoord;\n"
@@ -119,26 +83,13 @@
             + "  gl_FragColor *= " + ALPHA_UNIFORM + ";\n"
             + "}\n";
 
-    private static final String OES_TEXTURE_FRAGMENT_SHADER = ""
-            + "#extension GL_OES_EGL_image_external : require\n"
-            + "precision mediump float;\n"
-            + "varying vec2 vTextureCoord;\n"
-            + "uniform float " + ALPHA_UNIFORM + ";\n"
-            + "uniform samplerExternalOES " + TEXTURE_SAMPLER_UNIFORM + ";\n"
-            + "void main() {\n"
-            + "  gl_FragColor = texture2D(" + TEXTURE_SAMPLER_UNIFORM + ", vTextureCoord);\n"
-            + "  gl_FragColor *= " + ALPHA_UNIFORM + ";\n"
-            + "}\n";
-
     private static final int INITIAL_RESTORE_STATE_SIZE = 8;
     private static final int MATRIX_SIZE = 16;
 
     // Keep track of restore state
     private float[] mMatrices = new float[INITIAL_RESTORE_STATE_SIZE * MATRIX_SIZE];
-    private float[] mAlphas = new float[INITIAL_RESTORE_STATE_SIZE];
     private IntArray mSaveFlags = new IntArray();
 
-    private int mCurrentAlphaIndex = 0;
     private int mCurrentMatrixIndex = 0;
 
     // Viewport size
@@ -148,15 +99,8 @@
     // Projection matrix
     private float[] mProjectionMatrix = new float[MATRIX_SIZE];
 
-    // Screen size for when we aren't bound to a texture
-    private int mScreenWidth;
-    private int mScreenHeight;
-
     // GL programs
-    private int mDrawProgram;
     private int mTextureProgram;
-    private int mOesTextureProgram;
-    private int mMeshProgram;
 
     // GL buffer containing BOX_COORDINATES
     private int mBoxCoordinates;
@@ -165,17 +109,11 @@
     private static final int INDEX_POSITION = 0;
     private static final int INDEX_MATRIX = 1;
 
-    // Handle indices -- draw
-    private static final int INDEX_COLOR = 2;
-
     // Handle indices -- texture
     private static final int INDEX_TEXTURE_MATRIX = 2;
     private static final int INDEX_TEXTURE_SAMPLER = 3;
     private static final int INDEX_ALPHA = 4;
 
-    // Handle indices -- mesh
-    private static final int INDEX_TEXTURE_COORD = 2;
-
     private abstract static class ShaderParameter {
         public int handle;
         protected final String mName;
@@ -211,52 +149,18 @@
         }
     }
 
-    ShaderParameter[] mDrawParameters = {
-            new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
-            new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
-            new UniformShaderParameter(COLOR_UNIFORM), // INDEX_COLOR
-    };
-    ShaderParameter[] mTextureParameters = {
+    private ShaderParameter[] mTextureParameters = {
             new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
             new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
             new UniformShaderParameter(TEXTURE_MATRIX_UNIFORM), // INDEX_TEXTURE_MATRIX
             new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
             new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
     };
-    ShaderParameter[] mOesTextureParameters = {
-            new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
-            new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
-            new UniformShaderParameter(TEXTURE_MATRIX_UNIFORM), // INDEX_TEXTURE_MATRIX
-            new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
-            new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
-    };
-    ShaderParameter[] mMeshParameters = {
-            new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
-            new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
-            new AttributeShaderParameter(TEXTURE_COORD_ATTRIBUTE), // INDEX_TEXTURE_COORD
-            new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
-            new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
-    };
 
     private final IntArray mUnboundTextures = new IntArray();
-    private final IntArray mDeleteBuffers = new IntArray();
-
-    // Keep track of statistics for debugging
-    private int mCountDrawMesh = 0;
-    private int mCountTextureRect = 0;
-    private int mCountFillRect = 0;
-    private int mCountDrawLine = 0;
-
-    // Buffer for framebuffer IDs -- we keep track so we can switch the attached
-    // texture.
-    private int[] mFrameBuffer = new int[1];
-
-    // Bound textures.
-    private ArrayList<RawTexture> mTargetTextures = new ArrayList<RawTexture>();
 
     // Temporary variables used within calculations
     private final float[] mTempMatrix = new float[32];
-    private final float[] mTempColor = new float[4];
     private final RectF mTempSourceRect = new RectF();
     private final RectF mTempTargetRect = new RectF();
     private final float[] mTempTextureMatrix = new float[MATRIX_SIZE];
@@ -267,26 +171,15 @@
     public GLES20Canvas() {
         Matrix.setIdentityM(mTempTextureMatrix, 0);
         Matrix.setIdentityM(mMatrices, mCurrentMatrixIndex);
-        mAlphas[mCurrentAlphaIndex] = 1f;
-        mTargetTextures.add(null);
 
         FloatBuffer boxBuffer = createBuffer(BOX_COORDINATES);
         mBoxCoordinates = uploadBuffer(boxBuffer);
 
-        int drawVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, DRAW_VERTEX_SHADER);
         int textureVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, TEXTURE_VERTEX_SHADER);
-        int meshVertexShader = loadShader(GLES20.GL_VERTEX_SHADER, MESH_VERTEX_SHADER);
-        int drawFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, DRAW_FRAGMENT_SHADER);
         int textureFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, TEXTURE_FRAGMENT_SHADER);
-        int oesTextureFragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER,
-                OES_TEXTURE_FRAGMENT_SHADER);
 
-        mDrawProgram = assembleProgram(drawVertexShader, drawFragmentShader, mDrawParameters);
         mTextureProgram = assembleProgram(textureVertexShader, textureFragmentShader,
                 mTextureParameters);
-        mOesTextureProgram = assembleProgram(textureVertexShader, oesTextureFragmentShader,
-                mOesTextureParameters);
-        mMeshProgram = assembleProgram(meshVertexShader, textureFragmentShader, mMeshParameters);
         GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);
         checkError();
     }
@@ -348,12 +241,8 @@
         checkError();
         Matrix.setIdentityM(mMatrices, mCurrentMatrixIndex);
         Matrix.orthoM(mProjectionMatrix, 0, 0, width, 0, height, -1, 1);
-        if (getTargetTexture() == null) {
-            mScreenWidth = width;
-            mScreenHeight = height;
-            Matrix.translateM(mMatrices, mCurrentMatrixIndex, 0, height, 0);
-            Matrix.scaleM(mMatrices, mCurrentMatrixIndex, 1, -1, 1);
-        }
+        Matrix.translateM(mMatrices, mCurrentMatrixIndex, 0, height, 0);
+        Matrix.scaleM(mMatrices, mCurrentMatrixIndex, 1, -1, 1);
     }
 
     @Override
@@ -364,34 +253,6 @@
         checkError();
     }
 
-    @Override
-    public void clearBuffer(float[] argb) {
-        GLES20.glClearColor(argb[1], argb[2], argb[3], argb[0]);
-        checkError();
-        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
-        checkError();
-    }
-
-    @Override
-    public float getAlpha() {
-        return mAlphas[mCurrentAlphaIndex];
-    }
-
-    @Override
-    public void setAlpha(float alpha) {
-        mAlphas[mCurrentAlphaIndex] = alpha;
-    }
-
-    @Override
-    public void multiplyAlpha(float alpha) {
-        setAlpha(getAlpha() * alpha);
-    }
-
-    @Override
-    public void translate(float x, float y, float z) {
-        Matrix.translateM(mMatrices, mCurrentMatrixIndex, x, y, z);
-    }
-
     // This is a faster version of translate(x, y, z) because
     // (1) we knows z = 0, (2) we inline the Matrix.translateM call,
     // (3) we unroll the loop
@@ -406,11 +267,6 @@
     }
 
     @Override
-    public void scale(float sx, float sy, float sz) {
-        Matrix.scaleM(mMatrices, mCurrentMatrixIndex, sx, sy, sz);
-    }
-
-    @Override
     public void rotate(float angle, float x, float y, float z) {
         if (angle == 0f) {
             return;
@@ -424,30 +280,7 @@
     }
 
     @Override
-    public void multiplyMatrix(float[] matrix, int offset) {
-        float[] temp = mTempMatrix;
-        float[] currentMatrix = mMatrices;
-        int index = mCurrentMatrixIndex;
-        Matrix.multiplyMM(temp, 0, currentMatrix, index, matrix, offset);
-        System.arraycopy(temp, 0, currentMatrix, index, 16);
-    }
-
-    @Override
-    public void save() {
-        save(SAVE_FLAG_ALL);
-    }
-
-    @Override
     public void save(int saveFlags) {
-        boolean saveAlpha = (saveFlags & SAVE_FLAG_ALPHA) == SAVE_FLAG_ALPHA;
-        if (saveAlpha) {
-            float currentAlpha = getAlpha();
-            mCurrentAlphaIndex++;
-            if (mAlphas.length <= mCurrentAlphaIndex) {
-                mAlphas = Arrays.copyOf(mAlphas, mAlphas.length * 2);
-            }
-            mAlphas[mCurrentAlphaIndex] = currentAlpha;
-        }
         boolean saveMatrix = (saveFlags & SAVE_FLAG_MATRIX) == SAVE_FLAG_MATRIX;
         if (saveMatrix) {
             int currentIndex = mCurrentMatrixIndex;
@@ -463,82 +296,12 @@
     @Override
     public void restore() {
         int restoreFlags = mSaveFlags.removeLast();
-        boolean restoreAlpha = (restoreFlags & SAVE_FLAG_ALPHA) == SAVE_FLAG_ALPHA;
-        if (restoreAlpha) {
-            mCurrentAlphaIndex--;
-        }
         boolean restoreMatrix = (restoreFlags & SAVE_FLAG_MATRIX) == SAVE_FLAG_MATRIX;
         if (restoreMatrix) {
             mCurrentMatrixIndex -= MATRIX_SIZE;
         }
     }
 
-    @Override
-    public void drawLine(float x1, float y1, float x2, float y2, GLPaint paint) {
-        draw(GLES20.GL_LINE_STRIP, OFFSET_DRAW_LINE, COUNT_LINE_VERTEX, x1, y1, x2 - x1, y2 - y1,
-                paint);
-        mCountDrawLine++;
-    }
-
-    @Override
-    public void drawRect(float x, float y, float width, float height, GLPaint paint) {
-        draw(GLES20.GL_LINE_LOOP, OFFSET_DRAW_RECT, COUNT_RECT_VERTEX, x, y, width, height, paint);
-        mCountDrawLine++;
-    }
-
-    private void draw(int type, int offset, int count, float x, float y, float width, float height,
-            GLPaint paint) {
-        draw(type, offset, count, x, y, width, height, paint.getColor(), paint.getLineWidth());
-    }
-
-    private void draw(int type, int offset, int count, float x, float y, float width, float height,
-            int color, float lineWidth) {
-        prepareDraw(offset, color, lineWidth);
-        draw(mDrawParameters, type, count, x, y, width, height);
-    }
-
-    private void prepareDraw(int offset, int color, float lineWidth) {
-        GLES20.glUseProgram(mDrawProgram);
-        checkError();
-        if (lineWidth > 0) {
-            GLES20.glLineWidth(lineWidth);
-            checkError();
-        }
-        float[] colorArray = getColor(color);
-        boolean blendingEnabled = (colorArray[3] < 1f);
-        enableBlending(blendingEnabled);
-        if (blendingEnabled) {
-            GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
-            checkError();
-        }
-
-        GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
-        setPosition(mDrawParameters, offset);
-        checkError();
-    }
-
-    private float[] getColor(int color) {
-        float alpha = ((color >>> 24) & 0xFF) / 255f * getAlpha();
-        float red = ((color >>> 16) & 0xFF) / 255f * alpha;
-        float green = ((color >>> 8) & 0xFF) / 255f * alpha;
-        float blue = (color & 0xFF) / 255f * alpha;
-        mTempColor[0] = red;
-        mTempColor[1] = green;
-        mTempColor[2] = blue;
-        mTempColor[3] = alpha;
-        return mTempColor;
-    }
-
-    private void enableBlending(boolean enableBlending) {
-        if (enableBlending) {
-            GLES20.glEnable(GLES20.GL_BLEND);
-            checkError();
-        } else {
-            GLES20.glDisable(GLES20.GL_BLEND);
-            checkError();
-        }
-    }
-
     private void setPosition(ShaderParameter[] params, int offset) {
         GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, mBoxCoordinates);
         checkError();
@@ -570,13 +333,6 @@
     }
 
     @Override
-    public void fillRect(float x, float y, float width, float height, int color) {
-        draw(GLES20.GL_TRIANGLE_STRIP, OFFSET_FILL_RECT, COUNT_FILL_VERTEX, x, y, width, height,
-                color, 0f);
-        mCountFillRect++;
-    }
-
-    @Override
     public void drawTexture(BasicTexture texture, int x, int y, int width, int height) {
         if (width <= 0 || height <= 0) {
             return;
@@ -588,17 +344,7 @@
     }
 
     private static void copyTextureCoordinates(BasicTexture texture, RectF outRect) {
-        int left = 0;
-        int top = 0;
-        int right = texture.getWidth();
-        int bottom = texture.getHeight();
-        if (texture.hasBorder()) {
-            left = 1;
-            top = 1;
-            right -= 1;
-            bottom -= 1;
-        }
-        outRect.set(left, top, right, bottom);
+        outRect.set(0, 0, texture.getWidth(), texture.getHeight());
     }
 
     @Override
@@ -613,16 +359,6 @@
         drawTextureRect(texture, mTempSourceRect, mTempTargetRect);
     }
 
-    @Override
-    public void drawTexture(BasicTexture texture, float[] textureTransform, int x, int y, int w,
-            int h) {
-        if (w <= 0 || h <= 0) {
-            return;
-        }
-        mTempTargetRect.set(x, y, x + w, y + h);
-        drawTextureRect(texture, textureTransform, mTempTargetRect);
-    }
-
     private void drawTextureRect(BasicTexture texture, RectF source, RectF target) {
         setTextureMatrix(source);
         drawTextureRect(texture, mTempTextureMatrix, target);
@@ -667,30 +403,15 @@
         setPosition(params, OFFSET_FILL_RECT);
         GLES20.glUniformMatrix4fv(params[INDEX_TEXTURE_MATRIX].handle, 1, false, textureMatrix, 0);
         checkError();
-        if (texture.isFlippedVertically()) {
-            save(SAVE_FLAG_MATRIX);
-            translate(0, target.centerY());
-            scale(1, -1, 1);
-            translate(0, -target.centerY());
-        }
         draw(params, GLES20.GL_TRIANGLE_STRIP, COUNT_FILL_VERTEX, target.left, target.top,
                 target.width(), target.height());
-        if (texture.isFlippedVertically()) {
-            restore();
-        }
-        mCountTextureRect++;
     }
 
     private ShaderParameter[] prepareTexture(BasicTexture texture) {
         ShaderParameter[] params;
         int program;
-        if (texture.getTarget() == GLES20.GL_TEXTURE_2D) {
-            params = mTextureParameters;
-            program = mTextureProgram;
-        } else {
-            params = mOesTextureParameters;
-            program = mOesTextureProgram;
-        }
+        params = mTextureParameters;
+        program = mTextureProgram;
         prepareTexture(texture, program, params);
         return params;
     }
@@ -699,89 +420,20 @@
         deleteRecycledResources();
         GLES20.glUseProgram(program);
         checkError();
-        enableBlending(!texture.isOpaque() || getAlpha() < OPAQUE_ALPHA);
+        GLES20.glDisable(GLES20.GL_BLEND);
+        checkError();
         GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
         checkError();
         texture.onBind(this);
-        GLES20.glBindTexture(texture.getTarget(), texture.getId());
+        GLES20.glBindTexture(GL_TARGET, texture.getId());
         checkError();
         GLES20.glUniform1i(params[INDEX_TEXTURE_SAMPLER].handle, 0);
         checkError();
-        GLES20.glUniform1f(params[INDEX_ALPHA].handle, getAlpha());
+        GLES20.glUniform1f(params[INDEX_ALPHA].handle, 1);
         checkError();
     }
 
     @Override
-    public void drawMesh(BasicTexture texture, int x, int y, int xyBuffer, int uvBuffer,
-            int indexBuffer, int indexCount) {
-        prepareTexture(texture, mMeshProgram, mMeshParameters);
-
-        GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
-        checkError();
-
-        GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, xyBuffer);
-        checkError();
-        int positionHandle = mMeshParameters[INDEX_POSITION].handle;
-        GLES20.glVertexAttribPointer(positionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false,
-                VERTEX_STRIDE, 0);
-        checkError();
-
-        GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, uvBuffer);
-        checkError();
-        int texCoordHandle = mMeshParameters[INDEX_TEXTURE_COORD].handle;
-        GLES20.glVertexAttribPointer(texCoordHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT,
-                false, VERTEX_STRIDE, 0);
-        checkError();
-        GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
-        checkError();
-
-        GLES20.glEnableVertexAttribArray(positionHandle);
-        checkError();
-        GLES20.glEnableVertexAttribArray(texCoordHandle);
-        checkError();
-
-        setMatrix(mMeshParameters, x, y, 1, 1);
-        GLES20.glDrawElements(GLES20.GL_TRIANGLE_STRIP, indexCount, GLES20.GL_UNSIGNED_BYTE, 0);
-        checkError();
-
-        GLES20.glDisableVertexAttribArray(positionHandle);
-        checkError();
-        GLES20.glDisableVertexAttribArray(texCoordHandle);
-        checkError();
-        GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
-        checkError();
-        mCountDrawMesh++;
-    }
-
-    @Override
-    public void drawMixed(BasicTexture texture, int toColor, float ratio, int x, int y, int w, int h) {
-        copyTextureCoordinates(texture, mTempSourceRect);
-        mTempTargetRect.set(x, y, x + w, y + h);
-        drawMixed(texture, toColor, ratio, mTempSourceRect, mTempTargetRect);
-    }
-
-    @Override
-    public void drawMixed(BasicTexture texture, int toColor, float ratio, RectF source, RectF target) {
-        if (target.width() <= 0 || target.height() <= 0) {
-            return;
-        }
-        save(SAVE_FLAG_ALPHA);
-
-        float currentAlpha = getAlpha();
-        float cappedRatio = Math.min(1f, Math.max(0f, ratio));
-
-        float textureAlpha = (1f - cappedRatio) * currentAlpha;
-        setAlpha(textureAlpha);
-        drawTexture(texture, source, target);
-
-        float colorAlpha = cappedRatio * currentAlpha;
-        setAlpha(colorAlpha);
-        fillRect(target.left, target.top, target.width(), target.height(), toColor);
-
-        restore();
-    }
-
-    @Override
     public boolean unloadTexture(BasicTexture texture) {
         boolean unload = texture.isLoaded();
         if (unload) {
@@ -793,13 +445,6 @@
     }
 
     @Override
-    public void deleteBuffer(int bufferId) {
-        synchronized (mUnboundTextures) {
-            mDeleteBuffers.add(bufferId);
-        }
-    }
-
-    @Override
     public void deleteRecycledResources() {
         synchronized (mUnboundTextures) {
             IntArray ids = mUnboundTextures;
@@ -807,134 +452,41 @@
                 mGLId.glDeleteTextures(null, ids.size(), ids.getInternalArray(), 0);
                 ids.clear();
             }
-
-            ids = mDeleteBuffers;
-            if (ids.size() > 0) {
-                mGLId.glDeleteBuffers(null, ids.size(), ids.getInternalArray(), 0);
-                ids.clear();
-            }
-        }
-    }
-
-    @Override
-    public void dumpStatisticsAndClear() {
-        String line = String.format("MESH:%d, TEX_RECT:%d, FILL_RECT:%d, LINE:%d", mCountDrawMesh,
-                mCountTextureRect, mCountFillRect, mCountDrawLine);
-        mCountDrawMesh = 0;
-        mCountTextureRect = 0;
-        mCountFillRect = 0;
-        mCountDrawLine = 0;
-        Log.d(TAG, line);
-    }
-
-    @Override
-    public void endRenderTarget() {
-        RawTexture oldTexture = mTargetTextures.remove(mTargetTextures.size() - 1);
-        RawTexture texture = getTargetTexture();
-        setRenderTarget(oldTexture, texture);
-        restore(); // restore matrix and alpha
-    }
-
-    @Override
-    public void beginRenderTarget(RawTexture texture) {
-        save(); // save matrix and alpha and blending
-        RawTexture oldTexture = getTargetTexture();
-        mTargetTextures.add(texture);
-        setRenderTarget(oldTexture, texture);
-    }
-
-    private RawTexture getTargetTexture() {
-        return mTargetTextures.get(mTargetTextures.size() - 1);
-    }
-
-    private void setRenderTarget(BasicTexture oldTexture, RawTexture texture) {
-        if (oldTexture == null && texture != null) {
-            GLES20.glGenFramebuffers(1, mFrameBuffer, 0);
-            checkError();
-            GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFrameBuffer[0]);
-            checkError();
-        } else if (oldTexture != null && texture == null) {
-            GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
-            checkError();
-            GLES20.glDeleteFramebuffers(1, mFrameBuffer, 0);
-            checkError();
-        }
-
-        if (texture == null) {
-            setSize(mScreenWidth, mScreenHeight);
-        } else {
-            setSize(texture.getWidth(), texture.getHeight());
-
-            if (!texture.isLoaded()) {
-                texture.prepare(this);
-            }
-
-            GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0,
-                    texture.getTarget(), texture.getId(), 0);
-            checkError();
-
-            checkFramebufferStatus();
-        }
-    }
-
-    private static void checkFramebufferStatus() {
-        int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER);
-        if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) {
-            String msg = "";
-            switch (status) {
-                case GLES20.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
-                    msg = "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
-                    break;
-                case GLES20.GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
-                    msg = "GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS";
-                    break;
-                case GLES20.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
-                    msg = "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
-                    break;
-                case GLES20.GL_FRAMEBUFFER_UNSUPPORTED:
-                    msg = "GL_FRAMEBUFFER_UNSUPPORTED";
-                    break;
-            }
-            throw new RuntimeException(msg + ":" + Integer.toHexString(status));
         }
     }
 
     @Override
     public void setTextureParameters(BasicTexture texture) {
-        int target = texture.getTarget();
-        GLES20.glBindTexture(target, texture.getId());
+        GLES20.glBindTexture(GL_TARGET, texture.getId());
         checkError();
-        GLES20.glTexParameteri(target, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
-        GLES20.glTexParameteri(target, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
-        GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
-        GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
+        GLES20.glTexParameteri(GL_TARGET, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameteri(GL_TARGET, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+        GLES20.glTexParameterf(GL_TARGET, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
+        GLES20.glTexParameterf(GL_TARGET, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
     }
 
     @Override
     public void initializeTextureSize(BasicTexture texture, int format, int type) {
-        int target = texture.getTarget();
-        GLES20.glBindTexture(target, texture.getId());
+        GLES20.glBindTexture(GL_TARGET, texture.getId());
         checkError();
         int width = texture.getTextureWidth();
         int height = texture.getTextureHeight();
-        GLES20.glTexImage2D(target, 0, format, width, height, 0, format, type, null);
+        GLES20.glTexImage2D(GL_TARGET, 0, format, width, height, 0, format, type, null);
     }
 
     @Override
     public void initializeTexture(BasicTexture texture, Bitmap bitmap) {
-        int target = texture.getTarget();
-        GLES20.glBindTexture(target, texture.getId());
+        GLES20.glBindTexture(GL_TARGET, texture.getId());
         checkError();
-        GLUtils.texImage2D(target, 0, bitmap, 0);
+        GLUtils.texImage2D(GL_TARGET, 0, bitmap, 0);
     }
 
     @Override
     public void texSubImage2D(BasicTexture texture, int xOffset, int yOffset, Bitmap bitmap,
             int format, int type) {
-        int target = texture.getTarget();
-        GLES20.glBindTexture(target, texture.getId());
+        GLES20.glBindTexture(GL_TARGET, texture.getId());
         checkError();
-        GLUtils.texSubImage2D(target, 0, xOffset, yOffset, bitmap, format, type);
+        GLUtils.texSubImage2D(GL_TARGET, 0, xOffset, yOffset, bitmap, format, type);
     }
 
     @Override
@@ -942,11 +494,6 @@
         return uploadBuffer(buf, FLOAT_SIZE);
     }
 
-    @Override
-    public int uploadBuffer(ByteBuffer buf) {
-        return uploadBuffer(buf, 1);
-    }
-
     private int uploadBuffer(Buffer buffer, int elementSize) {
         mGLId.glGenBuffers(1, mTempIntArray, 0);
         checkError();
@@ -967,40 +514,6 @@
         }
     }
 
-    @SuppressWarnings("unused")
-    private static void printMatrix(String message, float[] m, int offset) {
-        StringBuilder b = new StringBuilder(message);
-        for (int i = 0; i < MATRIX_SIZE; i++) {
-            b.append(' ');
-            if (i % 4 == 0) {
-                b.append('\n');
-            }
-            b.append(m[offset + i]);
-        }
-        Log.v(TAG, b.toString());
-    }
-
-    @Override
-    public void recoverFromLightCycle() {
-        GLES20.glViewport(0, 0, mWidth, mHeight);
-        GLES20.glDisable(GLES20.GL_DEPTH_TEST);
-        GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);
-        checkError();
-    }
-
-    @Override
-    public void getBounds(Rect bounds, int x, int y, int width, int height) {
-        Matrix.translateM(mTempMatrix, 0, mMatrices, mCurrentMatrixIndex, x, y, 0f);
-        Matrix.scaleM(mTempMatrix, 0, width, height, 1f);
-        Matrix.multiplyMV(mTempMatrix, MATRIX_SIZE, mTempMatrix, 0, BOUNDS_COORDINATES, 0);
-        Matrix.multiplyMV(mTempMatrix, MATRIX_SIZE + 4, mTempMatrix, 0, BOUNDS_COORDINATES, 4);
-        bounds.left = Math.round(mTempMatrix[MATRIX_SIZE]);
-        bounds.right = Math.round(mTempMatrix[MATRIX_SIZE + 4]);
-        bounds.top = Math.round(mTempMatrix[MATRIX_SIZE + 1]);
-        bounds.bottom = Math.round(mTempMatrix[MATRIX_SIZE + 5]);
-        bounds.sort();
-    }
-
     @Override
     public GLId getGLId() {
         return mGLId;
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLPaint.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLPaint.java
deleted file mode 100644
index b26e9ab..0000000
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/GLPaint.java
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.gallery3d.glrenderer;
-
-import com.android.gallery3d.common.Utils;
-
-public class GLPaint {
-    private float mLineWidth = 1f;
-    private int mColor = 0;
-
-    public void setColor(int color) {
-        mColor = color;
-    }
-
-    public int getColor() {
-        return mColor;
-    }
-
-    public void setLineWidth(float width) {
-        Utils.assertTrue(width >= 0);
-        mLineWidth = width;
-    }
-
-    public float getLineWidth() {
-        return mLineWidth;
-    }
-}
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/RawTexture.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/RawTexture.java
deleted file mode 100644
index 93f0fdf..0000000
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/RawTexture.java
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.gallery3d.glrenderer;
-
-import android.util.Log;
-
-import javax.microedition.khronos.opengles.GL11;
-
-public class RawTexture extends BasicTexture {
-    private static final String TAG = "RawTexture";
-
-    private final boolean mOpaque;
-    private boolean mIsFlipped;
-
-    public RawTexture(int width, int height, boolean opaque) {
-        mOpaque = opaque;
-        setSize(width, height);
-    }
-
-    @Override
-    public boolean isOpaque() {
-        return mOpaque;
-    }
-
-    @Override
-    public boolean isFlippedVertically() {
-        return mIsFlipped;
-    }
-
-    public void setIsFlippedVertically(boolean isFlipped) {
-        mIsFlipped = isFlipped;
-    }
-
-    protected void prepare(GLCanvas canvas) {
-        GLId glId = canvas.getGLId();
-        mId = glId.generateTexture();
-        canvas.initializeTextureSize(this, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE);
-        canvas.setTextureParameters(this);
-        mState = STATE_LOADED;
-        setAssociatedCanvas(canvas);
-    }
-
-    @Override
-    protected boolean onBind(GLCanvas canvas) {
-        if (isLoaded()) return true;
-        Log.w(TAG, "lost the content due to context change");
-        return false;
-    }
-
-    @Override
-     public void yield() {
-         // we cannot free the texture because we have no backup.
-     }
-
-    @Override
-    protected int getTarget() {
-        return GL11.GL_TEXTURE_2D;
-    }
-}
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/Texture.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/Texture.java
index 3dcae4a..e71a379 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/Texture.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/Texture.java
@@ -24,21 +24,14 @@
 // This is the current texture hierarchy:
 //
 // Texture
-// -- ColorTexture
-// -- FadeInTexture
 // -- BasicTexture
 //    -- UploadedTexture
 //       -- BitmapTexture
 //       -- Tile
-//       -- ResourceTexture
-//          -- NinePatchTexture
-//       -- CanvasTexture
-//          -- StringTexture
 //
 public interface Texture {
     public int getWidth();
     public int getHeight();
     public void draw(GLCanvas canvas, int x, int y);
     public void draw(GLCanvas canvas, int x, int y, int w, int h);
-    public boolean isOpaque();
 }
diff --git a/WallpaperPicker/src/com/android/gallery3d/glrenderer/UploadedTexture.java b/WallpaperPicker/src/com/android/gallery3d/glrenderer/UploadedTexture.java
index 8075bf8..607e2a9 100644
--- a/WallpaperPicker/src/com/android/gallery3d/glrenderer/UploadedTexture.java
+++ b/WallpaperPicker/src/com/android/gallery3d/glrenderer/UploadedTexture.java
@@ -19,14 +19,12 @@
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
 import android.opengl.GLUtils;
+import android.util.Pair;
 
 import com.android.gallery3d.common.Utils;
-import com.android.launcher3.util.Thunk;
 
 import java.util.HashMap;
 
-import javax.microedition.khronos.opengles.GL11;
-
 // UploadedTextures use a Bitmap for the content of the texture.
 //
 // Subclasses should implement onGetBitmap() to provide the Bitmap and
@@ -45,89 +43,29 @@
 
     // To prevent keeping allocation the borders, we store those used borders here.
     // Since the length will be power of two, it won't use too much memory.
-    private static HashMap<BorderKey, Bitmap> sBorderLines =
-            new HashMap<BorderKey, Bitmap>();
-    private static BorderKey sBorderKey = new BorderKey();
+    private static HashMap<BorderKey, Bitmap> sBorderLines = new HashMap<BorderKey, Bitmap>();
 
-    @SuppressWarnings("unused")
-    private static final String TAG = "Texture";
+    private static class BorderKey extends Pair<Config, Integer> {
+        public BorderKey(Config config, boolean vertical, int length) {
+            super(config, vertical ? length : -length);
+        }
+    }
+
     private boolean mContentValid = true;
-
-    // indicate this textures is being uploaded in background
-    private boolean mIsUploading = false;
-    private boolean mOpaque = true;
-    private boolean mThrottled = false;
-    private static int sUploadedCount;
-    private static final int UPLOAD_LIMIT = 100;
-
     protected Bitmap mBitmap;
-    private int mBorder;
 
     protected UploadedTexture() {
-        this(false);
-    }
-
-    protected UploadedTexture(boolean hasBorder) {
         super(null, 0, STATE_UNLOADED);
-        if (hasBorder) {
-            setBorder(true);
-            mBorder = 1;
-        }
     }
 
-    protected void setIsUploading(boolean uploading) {
-        mIsUploading = uploading;
-    }
-
-    public boolean isUploading() {
-        return mIsUploading;
-    }
-
-    @Thunk static class BorderKey implements Cloneable {
-        public boolean vertical;
-        public Config config;
-        public int length;
-
-        @Override
-        public int hashCode() {
-            int x = config.hashCode() ^ length;
-            return vertical ? x : -x;
-        }
-
-        @Override
-        public boolean equals(Object object) {
-            if (!(object instanceof BorderKey)) return false;
-            BorderKey o = (BorderKey) object;
-            return vertical == o.vertical
-                    && config == o.config && length == o.length;
-        }
-
-        @Override
-        public BorderKey clone() {
-            try {
-                return (BorderKey) super.clone();
-            } catch (CloneNotSupportedException e) {
-                throw new AssertionError(e);
-            }
-        }
-    }
-
-    protected void setThrottled(boolean throttled) {
-        mThrottled = throttled;
-    }
-
-    private static Bitmap getBorderLine(
-            boolean vertical, Config config, int length) {
-        BorderKey key = sBorderKey;
-        key.vertical = vertical;
-        key.config = config;
-        key.length = length;
+    private static Bitmap getBorderLine(boolean vertical, Config config, int length) {
+        BorderKey key = new BorderKey(config, vertical, length);
         Bitmap bitmap = sBorderLines.get(key);
         if (bitmap == null) {
             bitmap = vertical
                     ? Bitmap.createBitmap(1, length, config)
                     : Bitmap.createBitmap(length, 1, config);
-            sBorderLines.put(key.clone(), bitmap);
+            sBorderLines.put(key, bitmap);
         }
         return bitmap;
     }
@@ -135,8 +73,8 @@
     private Bitmap getBitmap() {
         if (mBitmap == null) {
             mBitmap = onGetBitmap();
-            int w = mBitmap.getWidth() + mBorder * 2;
-            int h = mBitmap.getHeight() + mBorder * 2;
+            int w = mBitmap.getWidth();
+            int h = mBitmap.getHeight();
             if (mWidth == UNSPECIFIED) {
                 setSize(w, h);
             }
@@ -186,37 +124,23 @@
      */
     public void updateContent(GLCanvas canvas) {
         if (!isLoaded()) {
-            if (mThrottled && ++sUploadedCount > UPLOAD_LIMIT) {
-                return;
-            }
             uploadToCanvas(canvas);
         } else if (!mContentValid) {
             Bitmap bitmap = getBitmap();
             int format = GLUtils.getInternalFormat(bitmap);
             int type = GLUtils.getType(bitmap);
-            canvas.texSubImage2D(this, mBorder, mBorder, bitmap, format, type);
+            canvas.texSubImage2D(this, 0, 0, bitmap, format, type);
             freeBitmap();
             mContentValid = true;
         }
     }
 
-    public static void resetUploadLimit() {
-        sUploadedCount = 0;
-    }
-
-    public static boolean uploadLimitReached() {
-        return sUploadedCount > UPLOAD_LIMIT;
-    }
-
     private void uploadToCanvas(GLCanvas canvas) {
-
         Bitmap bitmap = getBitmap();
         if (bitmap != null) {
             try {
                 int bWidth = bitmap.getWidth();
                 int bHeight = bitmap.getHeight();
-                int width = bWidth + mBorder * 2;
-                int height = bHeight + mBorder * 2;
                 int texWidth = getTextureWidth();
                 int texHeight = getTextureHeight();
 
@@ -234,28 +158,18 @@
                     Config config = bitmap.getConfig();
 
                     canvas.initializeTextureSize(this, format, type);
-                    canvas.texSubImage2D(this, mBorder, mBorder, bitmap, format, type);
-
-                    if (mBorder > 0) {
-                        // Left border
-                        Bitmap line = getBorderLine(true, config, texHeight);
-                        canvas.texSubImage2D(this, 0, 0, line, format, type);
-
-                        // Top border
-                        line = getBorderLine(false, config, texWidth);
-                        canvas.texSubImage2D(this, 0, 0, line, format, type);
-                    }
+                    canvas.texSubImage2D(this, 0, 0, bitmap, format, type);
 
                     // Right border
-                    if (mBorder + bWidth < texWidth) {
+                    if (bWidth < texWidth) {
                         Bitmap line = getBorderLine(true, config, texHeight);
-                        canvas.texSubImage2D(this, mBorder + bWidth, 0, line, format, type);
+                        canvas.texSubImage2D(this, bWidth, 0, line, format, type);
                     }
 
                     // Bottom border
-                    if (mBorder + bHeight < texHeight) {
+                    if (bHeight < texHeight) {
                         Bitmap line = getBorderLine(false, config, texWidth);
-                        canvas.texSubImage2D(this, 0, mBorder + bHeight, line, format, type);
+                        canvas.texSubImage2D(this, 0, bHeight, line, format, type);
                     }
                 }
             } finally {
@@ -278,20 +192,6 @@
     }
 
     @Override
-    protected int getTarget() {
-        return GL11.GL_TEXTURE_2D;
-    }
-
-    public void setOpaque(boolean isOpaque) {
-        mOpaque = isOpaque;
-    }
-
-    @Override
-    public boolean isOpaque() {
-        return mOpaque;
-    }
-
-    @Override
     public void recycle() {
         super.recycle();
         if (mBitmap != null) freeBitmap();
diff --git a/WallpaperPicker/src/com/android/photos/BitmapRegionTileSource.java b/WallpaperPicker/src/com/android/photos/BitmapRegionTileSource.java
index 2f367bb..2f9c9a3 100644
--- a/WallpaperPicker/src/com/android/photos/BitmapRegionTileSource.java
+++ b/WallpaperPicker/src/com/android/photos/BitmapRegionTileSource.java
@@ -25,7 +25,6 @@
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Rect;
-import android.media.ExifInterface;
 import android.net.Uri;
 import android.opengl.GLUtils;
 import android.os.Build;
diff --git a/WallpaperPicker/src/com/android/photos/views/TiledImageView.java b/WallpaperPicker/src/com/android/photos/views/TiledImageView.java
index 7e3e1a9..6f7a530 100644
--- a/WallpaperPicker/src/com/android/photos/views/TiledImageView.java
+++ b/WallpaperPicker/src/com/android/photos/views/TiledImageView.java
@@ -17,12 +17,7 @@
 package com.android.photos.views;
 
 import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Color;
 import android.graphics.Matrix;
-import android.graphics.Paint;
-import android.graphics.Paint.Align;
 import android.graphics.RectF;
 import android.opengl.GLSurfaceView;
 import android.opengl.GLSurfaceView.Renderer;
@@ -82,7 +77,6 @@
         mGLSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
         addView(mGLSurfaceView, new LayoutParams(
                 LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
-        //setTileSource(new ColoredTiles());
     }
 
     @Override
@@ -247,66 +241,4 @@
         }
 
     }
-
-    @SuppressWarnings("unused")
-    private static class ColoredTiles implements TileSource {
-        private static final int[] COLORS = new int[] {
-            Color.RED,
-            Color.BLUE,
-            Color.YELLOW,
-            Color.GREEN,
-            Color.CYAN,
-            Color.MAGENTA,
-            Color.WHITE,
-        };
-
-        private Paint mPaint = new Paint();
-        private Canvas mCanvas = new Canvas();
-
-        @Override
-        public int getTileSize() {
-            return 256;
-        }
-
-        @Override
-        public int getImageWidth() {
-            return 16384;
-        }
-
-        @Override
-        public int getImageHeight() {
-            return 8192;
-        }
-
-        @Override
-        public int getRotation() {
-            return 0;
-        }
-
-        @Override
-        public Bitmap getTile(int level, int x, int y, Bitmap bitmap) {
-            int tileSize = getTileSize();
-            if (bitmap == null) {
-                bitmap = Bitmap.createBitmap(tileSize, tileSize,
-                        Bitmap.Config.ARGB_8888);
-            }
-            mCanvas.setBitmap(bitmap);
-            mCanvas.drawColor(COLORS[level]);
-            mPaint.setColor(Color.BLACK);
-            mPaint.setTextSize(20);
-            mPaint.setTextAlign(Align.CENTER);
-            mCanvas.drawText(x + "x" + y, 128, 128, mPaint);
-            tileSize <<= level;
-            x /= tileSize;
-            y /= tileSize;
-            mCanvas.drawText(x + "x" + y + " @ " + level, 128, 30, mPaint);
-            mCanvas.setBitmap(null);
-            return bitmap;
-        }
-
-        @Override
-        public BasicTexture getPreview() {
-            return null;
-        }
-    }
 }