1 /* 2 * Copyright (C) 2024 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 <SkBitmap.h> 18 #include <SkBlendMode.h> 19 #include <SkCanvas.h> 20 #include <SkPaint.h> 21 #include <SkRefCnt.h> 22 #include <SkRuntimeEffect.h> 23 #include <SkSurface.h> 24 #include <include/gpu/ganesh/SkSurfaceGanesh.h> 25 #include <math.h> 26 27 #include "SkImageFilters.h" 28 #include "TestSceneBase.h" 29 #include "include/gpu/GpuTypes.h" // from Skia 30 #include "tests/common/BitmapAllocationTestUtils.h" 31 #include "utils/Color.h" 32 33 class WindowBlurSkia; 34 35 static TestScene::Registrar _WindowBlurSkia(TestScene::Info{ 36 "windowblurskia", "Draws window Skia blur", TestScene::simpleCreateScene<WindowBlurSkia>}); 37 38 /** 39 * Simulates the Skia window blur in 40 * frameworks/native/libs/renderengine/skia/filters/GaussianBlurFilter.cpp 41 */ 42 class WindowBlurSkia : public TestScene { 43 private: 44 // Keep in sync with frameworks/native/libs/renderengine/skia/filters/BlurFilter.h 45 static constexpr float kInputScale = 0.25f; 46 47 static constexpr uint32_t kLoopLength = 500; 48 static constexpr uint32_t kMaxBlurRadius = 300; 49 50 sp<RenderNode> card; 51 sp<RenderNode> contentNode; 52 53 public: createContent(int width,int height,Canvas & canvas)54 void createContent(int width, int height, Canvas& canvas) override { 55 contentNode = TestUtils::createNode( 56 0, 0, width, height, [width, height](RenderProperties& props, Canvas& canvas) { 57 canvas.drawColor(Color::White, SkBlendMode::kSrcOver); 58 Paint paint; 59 paint.setColor(Color::Red_500); 60 canvas.drawRect(0, 0, width / 2, height / 2, paint); 61 paint.setColor(Color::Blue_500); 62 canvas.drawRect(width / 2, height / 2, width, height, paint); 63 }); 64 65 card = TestUtils::createNode( 66 0, 0, width, height, 67 [this](RenderProperties& props, Canvas& canvas) { blurFrame(canvas, 0); }); 68 canvas.drawRenderNode(card.get()); 69 } 70 doFrame(int frameNr)71 void doFrame(int frameNr) override { 72 int curFrame = frameNr % kLoopLength; 73 float blurRadius = 74 (sin((float)curFrame / kLoopLength * M_PI * 2) + 1) * 0.5 * kMaxBlurRadius; 75 TestUtils::recordNode( 76 *card, [this, blurRadius](Canvas& canvas) { blurFrame(canvas, blurRadius); }); 77 } 78 blurFrame(Canvas & canvas,float blurRadius)79 void blurFrame(Canvas& canvas, float blurRadius) { 80 if (blurRadius == 0) { 81 canvas.drawRenderNode(contentNode.get()); 82 return; 83 } 84 85 int width = canvas.width(); 86 int height = canvas.height(); 87 88 // Downsample and blur the image with the Skia blur filter. 89 sp<RenderNode> node = contentNode; 90 sk_sp<SkImageFilter> blurFilter = 91 SkImageFilters::Blur(blurRadius, blurRadius, SkTileMode::kClamp, nullptr, nullptr); 92 node = TestUtils::createNode( 93 0, 0, width * kInputScale, height * kInputScale, 94 [node, blurFilter](RenderProperties& props, Canvas& canvas) { 95 props.mutateLayerProperties().setImageFilter(blurFilter.get()); 96 canvas.scale(kInputScale, kInputScale); 97 canvas.drawRenderNode(node.get()); 98 }); 99 100 // Upsample the image to its original size. 101 canvas.scale(1 / kInputScale, 1 / kInputScale); 102 canvas.drawRenderNode(node.get()); 103 } 104 }; 105