michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.gfx;
michael@0: 
michael@0: import android.opengl.GLES20;
michael@0: 
michael@0: import java.util.ArrayList;
michael@0: 
michael@0: /** Manages a list of dead tiles, so we don't leak resources. */
michael@0: public class TextureReaper {
michael@0:     private static TextureReaper sSharedInstance;
michael@0:     private ArrayList<Integer> mDeadTextureIDs;
michael@0: 
michael@0:     private TextureReaper() { mDeadTextureIDs = new ArrayList<Integer>(); }
michael@0: 
michael@0:     public static TextureReaper get() {
michael@0:         if (sSharedInstance == null)
michael@0:             sSharedInstance = new TextureReaper();
michael@0:         return sSharedInstance;
michael@0:     }
michael@0: 
michael@0:     public void add(int[] textureIDs) {
michael@0:         for (int textureID : textureIDs)
michael@0:             add(textureID);
michael@0:     }
michael@0: 
michael@0:     public void add(int textureID) {
michael@0:         mDeadTextureIDs.add(textureID);
michael@0:     }
michael@0: 
michael@0:     public void reap() {
michael@0:         int numTextures = mDeadTextureIDs.size();
michael@0:         // Adreno 200 will generate INVALID_VALUE if len == 0 is passed to glDeleteTextures,
michael@0:         // even though it's not supposed to.
michael@0:         if (numTextures == 0)
michael@0:             return;
michael@0: 
michael@0:         int[] deadTextureIDs = new int[numTextures];
michael@0:         for (int i = 0; i < numTextures; i++) {
michael@0:             deadTextureIDs[i] = mDeadTextureIDs.get(i);
michael@0:         }
michael@0:         mDeadTextureIDs.clear();
michael@0: 
michael@0:         GLES20.glDeleteTextures(deadTextureIDs.length, deadTextureIDs, 0);
michael@0:     }
michael@0: }
michael@0: 
michael@0: