1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.ui; 18 19 import javax.microedition.khronos.opengles.GL11; 20 21 // RawTexture is used for texture created by glCopyTexImage2D. 22 // 23 // It will throw RuntimeException in onBind() if used with a different GL 24 // context. It is only used internally by copyTexture() in GLCanvas. 25 class RawTexture extends BasicTexture { 26 RawTexture(GLCanvas canvas, int id)27 private RawTexture(GLCanvas canvas, int id) { 28 super(canvas, id, STATE_LOADED); 29 } 30 newInstance(GLCanvas canvas)31 public static RawTexture newInstance(GLCanvas canvas) { 32 int[] textureId = new int[1]; 33 GL11 gl = canvas.getGLInstance(); 34 gl.glGenTextures(1, textureId, 0); 35 return new RawTexture(canvas, textureId[0]); 36 } 37 38 @Override onBind(GLCanvas canvas)39 protected boolean onBind(GLCanvas canvas) { 40 if (mCanvasRef.get() != canvas) { 41 throw new RuntimeException("cannot bind to different canvas"); 42 } 43 return true; 44 } 45 isOpaque()46 public boolean isOpaque() { 47 return true; 48 } 49 50 @Override yield()51 public void yield() { 52 // we cannot free the texture because we have no backup. 53 } 54 } 55