| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view; |
| |
| import android.graphics.Canvas; |
| import android.graphics.SurfaceTexture; |
| |
| /** |
| * An OpenGL ES 2.0 implementation of {@link HardwareLayer}. This |
| * implementation can be used as a texture. Rendering into this |
| * layer is not controlled by a {@link HardwareCanvas}. |
| */ |
| class GLES20TextureLayer extends GLES20Layer { |
| private int mTexture; |
| private SurfaceTexture mSurface; |
| |
| GLES20TextureLayer() { |
| int[] layerInfo = new int[2]; |
| mLayer = GLES20Canvas.nCreateTextureLayer(layerInfo); |
| |
| if (mLayer != 0) { |
| mTexture = layerInfo[0]; |
| mFinalizer = new Finalizer(mLayer); |
| } else { |
| mFinalizer = null; |
| } |
| } |
| |
| @Override |
| boolean isValid() { |
| return mLayer != 0 && mTexture != 0; |
| } |
| |
| @Override |
| void resize(int width, int height) { |
| } |
| |
| @Override |
| HardwareCanvas getCanvas() { |
| return null; |
| } |
| |
| @Override |
| HardwareCanvas start(Canvas currentCanvas) { |
| return null; |
| } |
| |
| @Override |
| void end(Canvas currentCanvas) { |
| } |
| |
| SurfaceTexture getSurfaceTexture() { |
| if (mSurface == null) { |
| mSurface = new SurfaceTexture(mTexture); |
| } |
| return mSurface; |
| } |
| |
| void update(int width, int height) { |
| GLES20Canvas.nUpdateTextureLayer(mLayer, width, height, mSurface); |
| } |
| } |