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      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 
     17 #include <hwui/Paint.h>
     18 #include <minikin/Layout.h>
     19 #include <string>
     20 #include "TestSceneBase.h"
     21 
     22 class SaveLayer2Animation;
     23 
     24 static TestScene::Registrar _SaveLayer(TestScene::Info{
     25         "savelayer2",
     26         "Interleaving 20 drawText/drawRect ops with saveLayer"
     27         "Tests the clipped saveLayer performance and FBO switching overhead.",
     28         TestScene::simpleCreateScene<SaveLayer2Animation>});
     29 
     30 class SaveLayer2Animation : public TestScene {
     31 public:
     32     Paint mBluePaint;
     33     Paint mGreenPaint;
     34 
     35     void createContent(int width, int height, Canvas& canvas) override {
     36         canvas.drawColor(SkColorSetARGB(255, 255, 0, 0), SkBlendMode::kSrcOver);
     37         SkIRect bounds = SkIRect::MakeWH(width, height);
     38         int regions = 20;
     39         int smallRectHeight = (bounds.height() / regions);
     40         int padding = smallRectHeight / 4;
     41         int top = bounds.fTop;
     42 
     43         mBluePaint.setColor(SkColorSetARGB(255, 0, 0, 255));
     44         mBluePaint.getSkFont().setSize(padding);
     45         mGreenPaint.setColor(SkColorSetARGB(255, 0, 255, 0));
     46         mGreenPaint.getSkFont().setSize(padding);
     47 
     48         // interleave drawText and drawRect with saveLayer ops
     49         for (int i = 0; i < regions; i++, top += smallRectHeight) {
     50             canvas.saveLayer(bounds.fLeft, top, bounds.fRight, top + padding, &mBluePaint,
     51                              SaveFlags::ClipToLayer | SaveFlags::MatrixClip);
     52             canvas.drawColor(SkColorSetARGB(255, 255, 255, 0), SkBlendMode::kSrcOver);
     53             std::string stri = std::to_string(i);
     54             std::string offscreen = "offscreen line " + stri;
     55             TestUtils::drawUtf8ToCanvas(&canvas, offscreen.c_str(), mBluePaint, bounds.fLeft,
     56                     top + padding);
     57             canvas.restore();
     58 
     59             canvas.drawRect(bounds.fLeft, top + padding, bounds.fRight,
     60                             top + smallRectHeight - padding, mBluePaint);
     61             std::string onscreen = "onscreen line " + stri;
     62             TestUtils::drawUtf8ToCanvas(&canvas, onscreen.c_str(), mGreenPaint, bounds.fLeft,
     63                     top + smallRectHeight - padding);
     64         }
     65     }
     66     void doFrame(int frameNr) override {}
     67 };
     68