The Tor Browser / file comparison
comparison: mobile/android/base/gfx/TextureGenerator.java
mobile/android/base/gfx/TextureGenerator.java
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| -1:000000000000 | 0:57cd5fc75dcd |
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| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.gfx; | |
| 7 | |
| 8 import android.opengl.GLES20; | |
| 9 import android.util.Log; | |
| 10 | |
| 11 import java.util.concurrent.ArrayBlockingQueue; | |
| 12 | |
| 13 import javax.microedition.khronos.egl.EGL10; | |
| 14 import javax.microedition.khronos.egl.EGLContext; | |
| 15 | |
| 16 public class TextureGenerator { | |
| 17 private static final String LOGTAG = "TextureGenerator"; | |
| 18 private static final int POOL_SIZE = 5; | |
| 19 | |
| 20 private static TextureGenerator sSharedInstance; | |
| 21 | |
| 22 private ArrayBlockingQueue<Integer> mTextureIds; | |
| 23 private EGLContext mContext; | |
| 24 | |
| 25 private TextureGenerator() { mTextureIds = new ArrayBlockingQueue<Integer>(POOL_SIZE); } | |
| 26 | |
| 27 public static TextureGenerator get() { | |
| 28 if (sSharedInstance == null) | |
| 29 sSharedInstance = new TextureGenerator(); | |
| 30 return sSharedInstance; | |
| 31 } | |
| 32 | |
| 33 public synchronized int take() { | |
| 34 try { | |
| 35 // Will block until one becomes available | |
| 36 return (int)mTextureIds.take(); | |
| 37 } catch (InterruptedException e) { | |
| 38 return 0; | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 public synchronized void fill() { | |
| 43 EGL10 egl = (EGL10)EGLContext.getEGL(); | |
| 44 EGLContext context = egl.eglGetCurrentContext(); | |
| 45 | |
| 46 if (mContext != null && mContext != context) { | |
| 47 mTextureIds.clear(); | |
| 48 } | |
| 49 | |
| 50 mContext = context; | |
| 51 | |
| 52 int numNeeded = mTextureIds.remainingCapacity(); | |
| 53 if (numNeeded == 0) | |
| 54 return; | |
| 55 | |
| 56 // Clear existing GL errors | |
| 57 int error; | |
| 58 while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) { | |
| 59 Log.w(LOGTAG, String.format("Clearing GL error: %#x", error)); | |
| 60 } | |
| 61 | |
| 62 int[] textures = new int[numNeeded]; | |
| 63 GLES20.glGenTextures(numNeeded, textures, 0); | |
| 64 | |
| 65 error = GLES20.glGetError(); | |
| 66 if (error != GLES20.GL_NO_ERROR) { | |
| 67 Log.e(LOGTAG, String.format("Failed to generate textures: %#x", error), new Exception()); | |
| 68 return; | |
| 69 } | |
| 70 | |
| 71 for (int i = 0; i < numNeeded; i++) { | |
| 72 mTextureIds.offer(textures[i]); | |
| 73 } | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 |
