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108 lines
3.7 KiB
Java
108 lines
3.7 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* James Willcox <jwillcox@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import android.util.Log;
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import android.opengl.GLES20;
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import java.util.concurrent.ArrayBlockingQueue;
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import javax.microedition.khronos.egl.EGL10;
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import javax.microedition.khronos.egl.EGLContext;
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public class TextureGenerator {
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private static final String LOGTAG = "TextureGenerator";
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private static final int POOL_SIZE = 5;
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private static TextureGenerator sSharedInstance;
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private ArrayBlockingQueue<Integer> mTextureIds;
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private EGLContext mContext;
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private TextureGenerator() { mTextureIds = new ArrayBlockingQueue<Integer>(POOL_SIZE); }
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public static TextureGenerator get() {
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if (sSharedInstance == null)
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sSharedInstance = new TextureGenerator();
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return sSharedInstance;
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}
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public synchronized int take() {
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try {
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// Will block until one becomes available
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return (int)mTextureIds.take();
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} catch (InterruptedException e) {
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return 0;
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}
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}
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public synchronized void fill() {
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EGL10 egl = (EGL10)EGLContext.getEGL();
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EGLContext context = egl.eglGetCurrentContext();
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if (mContext != null && mContext != context) {
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mTextureIds.clear();
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}
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mContext = context;
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int numNeeded = mTextureIds.remainingCapacity();
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if (numNeeded == 0)
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return;
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// Clear existing GL errors
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int error;
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while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) {
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Log.w(LOGTAG, String.format("Clearing GL error: %#x", error));
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}
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int[] textures = new int[numNeeded];
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GLES20.glGenTextures(numNeeded, textures, 0);
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error = GLES20.glGetError();
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if (error != GLES20.GL_NO_ERROR) {
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Log.e(LOGTAG, String.format("Failed to generate textures: %#x", error), new Exception());
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return;
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}
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for (int i = 0; i < numNeeded; i++) {
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mTextureIds.offer(textures[i]);
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}
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}
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}
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