1 /* 2 * Copyright (C) 2017 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 package com.android.test.uibench; 17 18 import android.graphics.Canvas; 19 import android.graphics.Color; 20 import android.graphics.ColorFilter; 21 import android.graphics.Paint; 22 import android.graphics.PixelFormat; 23 import android.graphics.Rect; 24 import android.graphics.drawable.Drawable; 25 import android.os.Bundle; 26 import android.support.v7.app.AppCompatActivity; 27 28 /** 29 * Test Canvas.saveLayer performance by interleaving drawText/drawRect with saveLayer. 30 * This test will be used to measure if drawing interleaved layers at the beginning of a frame will 31 * decrease FBO switching overhead (this is a future optimization in SkiaGL rendering pipeline). 32 */ 33 public class SaveLayerInterleaveActivity extends AppCompatActivity { 34 35 @Override 36 protected void onCreate(Bundle savedInstanceState) { 37 super.onCreate(savedInstanceState); 38 getWindow().setBackgroundDrawable(new Drawable() { 39 private final Paint mBluePaint = new Paint(Paint.ANTI_ALIAS_FLAG); 40 private final Paint mGreenPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 41 42 @Override 43 public void setAlpha(int alpha) { 44 } 45 46 @Override 47 public int getOpacity() { 48 return PixelFormat.OPAQUE; 49 } 50 51 @Override 52 public void setColorFilter(ColorFilter colorFilter) { 53 } 54 55 @Override 56 public void draw(Canvas canvas) { 57 canvas.drawColor(Color.RED); 58 59 Rect bounds = getBounds(); 60 int regions = 20; 61 int smallRectHeight = (bounds.height()/regions); 62 int padding = smallRectHeight / 4; 63 int top = bounds.top; 64 mBluePaint.setColor(Color.BLUE); 65 mBluePaint.setTextSize(padding); 66 mGreenPaint.setColor(Color.GREEN); 67 mGreenPaint.setTextSize(padding); 68 69 //interleave drawText and drawRect with saveLayer ops 70 for (int i = 0; i < regions; i++, top += smallRectHeight) { 71 canvas.saveLayer(bounds.left, top, bounds.right, top + padding, 72 mBluePaint); 73 canvas.drawColor(Color.YELLOW); 74 canvas.drawText("offscreen line "+ i, bounds.left, top + padding, 75 mBluePaint); 76 canvas.restore(); 77 78 Rect partX = new Rect(bounds.left, top + padding, 79 bounds.right,top + smallRectHeight - padding); 80 canvas.drawRect(partX, mBluePaint); 81 canvas.drawText("onscreen line "+ i, bounds.left, 82 top + smallRectHeight - padding, mGreenPaint); 83 } 84 85 invalidateSelf(); 86 } 87 }); 88 } 89 } 90
