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      1 /*
      2  * Copyright (C) 2019 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.test.hwui;
     18 
     19 import android.app.Activity;
     20 import android.graphics.Bitmap;
     21 import android.graphics.Canvas;
     22 import android.graphics.Color;
     23 import android.graphics.ColorSpace;
     24 import android.graphics.HardwareRenderer;
     25 import android.graphics.Outline;
     26 import android.graphics.PixelFormat;
     27 import android.graphics.Rect;
     28 import android.graphics.RenderNode;
     29 import android.hardware.HardwareBuffer;
     30 import android.media.Image;
     31 import android.media.ImageReader;
     32 import android.os.Bundle;
     33 import android.widget.ImageView;
     34 
     35 public class MyLittleTextureView extends Activity {
     36     private RenderNode mContent = new RenderNode("CustomRenderer");
     37     private HardwareRenderer mRenderer = new HardwareRenderer();
     38     private ImageView mImageView;
     39 
     40     @Override
     41     protected void onCreate(Bundle savedInstanceState) {
     42         super.onCreate(savedInstanceState);
     43         mImageView = new ImageView(this);
     44         mImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
     45         setContentView(mImageView);
     46 
     47         ImageReader reader = ImageReader.newInstance(100, 100, PixelFormat.RGBA_8888, 3,
     48                 HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE | HardwareBuffer.USAGE_GPU_COLOR_OUTPUT);
     49         mRenderer.setSurface(reader.getSurface());
     50         mRenderer.setLightSourceAlpha(0.0f, 1.0f);
     51         mRenderer.setLightSourceGeometry(100 / 2f, 0f, 800.0f, 20.0f);
     52         mContent.setLeftTopRightBottom(0, 0, 100, 100);
     53 
     54         Rect childRect = new Rect(25, 25, 65, 65);
     55         RenderNode childNode = new RenderNode("shadowCaster");
     56         childNode.setLeftTopRightBottom(childRect.left, childRect.top,
     57                 childRect.right, childRect.bottom);
     58         Outline outline = new Outline();
     59         outline.setRect(new Rect(0, 0, childRect.width(), childRect.height()));
     60         outline.setAlpha(1f);
     61         childNode.setOutline(outline);
     62         {
     63             Canvas canvas = childNode.beginRecording();
     64             canvas.drawColor(Color.BLUE);
     65         }
     66         childNode.endRecording();
     67         childNode.setElevation(20f);
     68 
     69         {
     70             Canvas canvas = mContent.beginRecording();
     71             canvas.drawColor(Color.WHITE);
     72             canvas.enableZ();
     73             canvas.drawRenderNode(childNode);
     74             canvas.disableZ();
     75         }
     76         mContent.endRecording();
     77         mRenderer.setContentRoot(mContent);
     78         mRenderer.createRenderRequest()
     79                 .setWaitForPresent(true)
     80                 .syncAndDraw();
     81         Image image = reader.acquireNextImage();
     82         Bitmap bitmap = Bitmap.wrapHardwareBuffer(image.getHardwareBuffer(),
     83                 ColorSpace.get(ColorSpace.Named.SRGB));
     84         mImageView.setImageBitmap(bitmap);
     85         image.close();
     86     }
     87 }
     88