mobile/android/base/gfx/TextureGenerator.java@b8a032363ba2 (annotated)
mobile/android/base/gfx/TextureGenerator.java
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | package org.mozilla.gecko.gfx; |
| michael@0 | 7 | |
| michael@0 | 8 | import android.opengl.GLES20; |
| michael@0 | 9 | import android.util.Log; |
| michael@0 | 10 | |
| michael@0 | 11 | import java.util.concurrent.ArrayBlockingQueue; |
| michael@0 | 12 | |
| michael@0 | 13 | import javax.microedition.khronos.egl.EGL10; |
| michael@0 | 14 | import javax.microedition.khronos.egl.EGLContext; |
| michael@0 | 15 | |
| michael@0 | 16 | public class TextureGenerator { |
| michael@0 | 17 | private static final String LOGTAG = "TextureGenerator"; |
| michael@0 | 18 | private static final int POOL_SIZE = 5; |
| michael@0 | 19 | |
| michael@0 | 20 | private static TextureGenerator sSharedInstance; |
| michael@0 | 21 | |
| michael@0 | 22 | private ArrayBlockingQueue<Integer> mTextureIds; |
| michael@0 | 23 | private EGLContext mContext; |
| michael@0 | 24 | |
| michael@0 | 25 | private TextureGenerator() { mTextureIds = new ArrayBlockingQueue<Integer>(POOL_SIZE); } |
| michael@0 | 26 | |
| michael@0 | 27 | public static TextureGenerator get() { |
| michael@0 | 28 | if (sSharedInstance == null) |
| michael@0 | 29 | sSharedInstance = new TextureGenerator(); |
| michael@0 | 30 | return sSharedInstance; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | public synchronized int take() { |
| michael@0 | 34 | try { |
| michael@0 | 35 | // Will block until one becomes available |
| michael@0 | 36 | return (int)mTextureIds.take(); |
| michael@0 | 37 | } catch (InterruptedException e) { |
| michael@0 | 38 | return 0; |
| michael@0 | 39 | } |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | public synchronized void fill() { |
| michael@0 | 43 | EGL10 egl = (EGL10)EGLContext.getEGL(); |
| michael@0 | 44 | EGLContext context = egl.eglGetCurrentContext(); |
| michael@0 | 45 | |
| michael@0 | 46 | if (mContext != null && mContext != context) { |
| michael@0 | 47 | mTextureIds.clear(); |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | mContext = context; |
| michael@0 | 51 | |
| michael@0 | 52 | int numNeeded = mTextureIds.remainingCapacity(); |
| michael@0 | 53 | if (numNeeded == 0) |
| michael@0 | 54 | return; |
| michael@0 | 55 | |
| michael@0 | 56 | // Clear existing GL errors |
| michael@0 | 57 | int error; |
| michael@0 | 58 | while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) { |
| michael@0 | 59 | Log.w(LOGTAG, String.format("Clearing GL error: %#x", error)); |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | int[] textures = new int[numNeeded]; |
| michael@0 | 63 | GLES20.glGenTextures(numNeeded, textures, 0); |
| michael@0 | 64 | |
| michael@0 | 65 | error = GLES20.glGetError(); |
| michael@0 | 66 | if (error != GLES20.GL_NO_ERROR) { |
| michael@0 | 67 | Log.e(LOGTAG, String.format("Failed to generate textures: %#x", error), new Exception()); |
| michael@0 | 68 | return; |
| michael@0 | 69 | } |
| michael@0 | 70 | |
| michael@0 | 71 | for (int i = 0; i < numNeeded; i++) { |
| michael@0 | 72 | mTextureIds.offer(textures[i]); |
| michael@0 | 73 | } |
| michael@0 | 74 | } |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 |
