libs/hwui/unit_tests/OpReordererTests.cpp - LeafOS-Project/android_frameworks_base - Gitiles

 /*
  * Copyright (C) 2015 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.
  */

 #include <gtest/gtest.h>

 #include <BakedOpState.h>
 #include <OpReorderer.h>
 #include <RecordedOp.h>
 #include <RecordingCanvas.h>
 #include <unit_tests/TestUtils.h>

 #include <unordered_map>

 namespace android {
 namespace uirenderer {

 /**
  * Class that redirects static operation dispatch to virtual methods on a Client class.
  *
  * The client is recreated for every op (so data cannot be persisted between operations), but the
  * virtual dispatch allows for default behaviors to be specified without enumerating each operation
  * for every test.
  *
  * onXXXOp methods fail by default - tests should override ops they expect
  * startFrame/endFrame do nothing by default - tests should override to intercept
  */
 template<class CustomClient, class Arg>
 class TestReceiver {
 public:
 #define CLIENT_METHOD(Type) \
     virtual void on##Type(Arg&, const Type&, const BakedOpState&) { FAIL(); }
     class Client {
     public:
         virtual ~Client() {};
         MAP_OPS(CLIENT_METHOD)

         virtual void startFrame(Arg& info) {}
         virtual void endFrame(Arg& info) {}
     };

 #define DISPATCHER_METHOD(Type) \
     static void on##Type(Arg& arg, const Type& op, const BakedOpState& state) { \
         CustomClient client; client.on##Type(arg, op, state); \
     }
     MAP_OPS(DISPATCHER_METHOD)

     static void startFrame(Arg& info) {
         CustomClient client;
         client.startFrame(info);
     }

     static void endFrame(Arg& info) {
         CustomClient client;
         client.endFrame(info);
     }
 };

 class Info {
 public:
     int index = 0;
 };

 // Receiver class which will fail if it receives any ops
 class FailReceiver : public TestReceiver<FailReceiver, Info>::Client {};

 class SimpleReceiver : public TestReceiver<SimpleReceiver, Info>::Client {
 public:
     void startFrame(Info& info) override {
         EXPECT_EQ(0, info.index++);
     }
     void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
         EXPECT_EQ(1, info.index++);
     }
     void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
         EXPECT_EQ(2, info.index++);
     }
     void endFrame(Info& info) override {
         EXPECT_EQ(3, info.index++);
     }
 };
 TEST(OpReorderer, simple) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(100, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(25, 25);
         canvas.drawRect(0, 0, 100, 200, SkPaint());
         canvas.drawBitmap(bitmap, 10, 10, nullptr);
     });
     OpReorderer reorderer;
     reorderer.defer(200, 200, *dl);

     Info info;
     reorderer.replayBakedOps<TestReceiver<SimpleReceiver, Info>>(info);
     EXPECT_EQ(4, info.index); // 2 ops + start + end
 }


 TEST(OpReorderer, simpleRejection) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         canvas.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
         canvas.clipRect(200, 200, 400, 400, SkRegion::kIntersect_Op); // intersection should be empty
         canvas.drawRect(0, 0, 400, 400, SkPaint());
         canvas.restore();
     });
     OpReorderer reorderer;
     reorderer.defer(200, 200, *dl);

     Info info;
     reorderer.replayBakedOps<TestReceiver<FailReceiver, Info>>(info);
 }


 static int SIMPLE_BATCHING_LOOPS = 5;
 class SimpleBatchingReceiver : public TestReceiver<SimpleBatchingReceiver, Info>::Client {
 public:
     void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
         EXPECT_TRUE(info.index++ >= SIMPLE_BATCHING_LOOPS);
     }
     void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
         EXPECT_TRUE(info.index++ < SIMPLE_BATCHING_LOOPS);
     }
 };
 TEST(OpReorderer, simpleBatching) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(10, 10);

         // Alternate between drawing rects and bitmaps, with bitmaps overlapping rects.
         // Rects don't overlap bitmaps, so bitmaps should be brought to front as a group.
         canvas.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
         for (int i = 0; i < SIMPLE_BATCHING_LOOPS; i++) {
             canvas.translate(0, 10);
             canvas.drawRect(0, 0, 10, 10, SkPaint());
             canvas.drawBitmap(bitmap, 5, 0, nullptr);
         }
         canvas.restore();
     });

     OpReorderer reorderer;
     reorderer.defer(200, 200, *dl);

     Info info;
     reorderer.replayBakedOps<TestReceiver<SimpleBatchingReceiver, Info>>(info);
     EXPECT_EQ(2 * SIMPLE_BATCHING_LOOPS, info.index); // 2 x loops ops, because no merging (TODO: force no merging)
 }

 class RenderNodeReceiver : public TestReceiver<RenderNodeReceiver, Info>::Client {
 public:
     void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
         switch(info.index++) {
         case 0:
             EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clippedBounds);
             EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
             break;
         case 1:
             EXPECT_EQ(Rect(50, 50, 150, 150), state.computedState.clippedBounds);
             EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
             break;
         default:
             FAIL();
         }
     }
 };
 TEST(OpReorderer, renderNode) {
     sp<RenderNode> child = TestUtils::createNode<RecordingCanvas>(10, 10, 110, 110, [](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
         canvas.drawRect(0, 0, 100, 100, paint);
     });

     RenderNode* childPtr = child.get();
     sp<RenderNode> parent = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200, [childPtr](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorDKGRAY);
         canvas.drawRect(0, 0, 200, 200, paint);

         canvas.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
         canvas.translate(40, 40);
         canvas.drawRenderNode(childPtr);
         canvas.restore();
     });

     TestUtils::syncNodePropertiesAndDisplayList(child);
     TestUtils::syncNodePropertiesAndDisplayList(parent);

     std::vector< sp<RenderNode> > nodes;
     nodes.push_back(parent.get());

     OpReorderer reorderer;
     reorderer.defer(SkRect::MakeWH(200, 200), 200, 200, nodes);

     Info info;
     reorderer.replayBakedOps<TestReceiver<RenderNodeReceiver, Info>>(info);
 }

 class ClippedReceiver : public TestReceiver<ClippedReceiver, Info>::Client {
 public:
     void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
         EXPECT_EQ(0, info.index++);
         EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clippedBounds);
         EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clipRect);
         EXPECT_TRUE(state.computedState.transform.isIdentity());
     }
 };
 TEST(OpReorderer, clipped) {
     sp<RenderNode> node = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(200, 200);
         canvas.drawBitmap(bitmap, 0, 0, nullptr);
     });
     TestUtils::syncNodePropertiesAndDisplayList(node);
     std::vector< sp<RenderNode> > nodes;
     nodes.push_back(node.get());

     OpReorderer reorderer;
     reorderer.defer(SkRect::MakeLTRB(10, 20, 30, 40), // clip to small area, should see in receiver
             200, 200, nodes);

     Info info;
     reorderer.replayBakedOps<TestReceiver<ClippedReceiver, Info>>(info);
 }


 class SaveLayerSimpleReceiver : public TestReceiver<SaveLayerSimpleReceiver, Info>::Client {
 public:
     void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
         EXPECT_EQ(0, info.index++);
         EXPECT_EQ(Rect(10, 10, 190, 190), op.unmappedBounds);
         EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clippedBounds);
         EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clipRect);

         Matrix4 expectedTransform;
         expectedTransform.loadTranslate(-10, -10, 0);
         EXPECT_MATRIX_APPROX_EQ(expectedTransform, state.computedState.transform);
     }
     void onLayerOp(Info& info, const LayerOp& op, const BakedOpState& state) override {
         EXPECT_EQ(1, info.index++);
         EXPECT_EQ(Rect(10, 10, 190, 190), state.computedState.clippedBounds);
         EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clipRect);
         EXPECT_TRUE(state.computedState.transform.isIdentity());
     }
 };
 TEST(OpReorderer, saveLayerSimple) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         canvas.saveLayerAlpha(10, 10, 190, 190, 128, SkCanvas::kClipToLayer_SaveFlag);
         canvas.drawRect(10, 10, 190, 190, SkPaint());
         canvas.restore();
     });

     OpReorderer reorderer;
     reorderer.defer(200, 200, *dl);

     Info info;
     reorderer.replayBakedOps<TestReceiver<SaveLayerSimpleReceiver, Info>>(info);
     EXPECT_EQ(2, info.index);
 }


 // saveLayer1 {rect1, saveLayer2 { rect2 } } will play back as rect2, rect1, layerOp2, layerOp1
 class SaveLayerNestedReceiver : public TestReceiver<SaveLayerNestedReceiver, Info>::Client {
 public:
     void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
         const int index = info.index++;
         if (index == 0) {
             EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner rect
         } else if (index == 1) {
             EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer rect
         } else { FAIL(); }
     }
     void onLayerOp(Info& info, const LayerOp& op, const BakedOpState& state) override {
         const int index = info.index++;
         if (index == 2) {
             EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner layer
         } else if (index == 3) {
             EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer layer
         } else { FAIL(); }
     }
 };
 TEST(OpReorderer, saveLayerNested) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(800, 800, [](RecordingCanvas& canvas) {
         canvas.saveLayerAlpha(0, 0, 800, 800, 128, SkCanvas::kClipToLayer_SaveFlag);
         {
             canvas.drawRect(0, 0, 800, 800, SkPaint());
             canvas.saveLayerAlpha(0, 0, 400, 400, 128, SkCanvas::kClipToLayer_SaveFlag);
             {
                 canvas.drawRect(0, 0, 400, 400, SkPaint());
             }
             canvas.restore();
         }
         canvas.restore();
     });

     OpReorderer reorderer;
     reorderer.defer(800, 800, *dl);

     Info info;
     reorderer.replayBakedOps<TestReceiver<SaveLayerNestedReceiver, Info>>(info);
     EXPECT_EQ(4, info.index);
 }

 TEST(OpReorderer, saveLayerContentRejection) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         canvas.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
         canvas.clipRect(200, 200, 400, 400, SkRegion::kIntersect_Op);
         canvas.saveLayerAlpha(200, 200, 400, 400, 128, SkCanvas::kClipToLayer_SaveFlag);

         // draw within save layer may still be recorded, but shouldn't be drawn
         canvas.drawRect(200, 200, 400, 400, SkPaint());

         canvas.restore();
         canvas.restore();
     });
     OpReorderer reorderer;
     reorderer.defer(200, 200, *dl);
     Info info;

     // should see no ops, even within the layer, since the layer should be rejected
     reorderer.replayBakedOps<TestReceiver<FailReceiver, Info>>(info);
 }

 } // namespace uirenderer
 } // namespace android
	/*
	* Copyright (C) 2015 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.
	*/

	#include <gtest/gtest.h>

	#include <BakedOpState.h>
	#include <OpReorderer.h>
	#include <RecordedOp.h>
	#include <RecordingCanvas.h>
	#include <unit_tests/TestUtils.h>

	#include <unordered_map>

	namespace android {
	namespace uirenderer {

	/**
	* Class that redirects static operation dispatch to virtual methods on a Client class.
	*
	* The client is recreated for every op (so data cannot be persisted between operations), but the
	* virtual dispatch allows for default behaviors to be specified without enumerating each operation
	* for every test.
	*
	* onXXXOp methods fail by default - tests should override ops they expect
	* startFrame/endFrame do nothing by default - tests should override to intercept
	*/
	template<class CustomClient, class Arg>
	class TestReceiver {
	public:
	#define CLIENT_METHOD(Type) \
	virtual void on##Type(Arg&, const Type&, const BakedOpState&) { FAIL(); }
	class Client {
	public:
	virtual ~Client() {};
	MAP_OPS(CLIENT_METHOD)

	virtual void startFrame(Arg& info) {}
	virtual void endFrame(Arg& info) {}
	};

	#define DISPATCHER_METHOD(Type) \
	static void on##Type(Arg& arg, const Type& op, const BakedOpState& state) { \
	CustomClient client; client.on##Type(arg, op, state); \
	}
	MAP_OPS(DISPATCHER_METHOD)

	static void startFrame(Arg& info) {
	CustomClient client;
	client.startFrame(info);
	}

	static void endFrame(Arg& info) {
	CustomClient client;
	client.endFrame(info);
	}
	};

	class Info {
	public:
	int index = 0;
	};

	// Receiver class which will fail if it receives any ops
	class FailReceiver : public TestReceiver<FailReceiver, Info>::Client {};

	class SimpleReceiver : public TestReceiver<SimpleReceiver, Info>::Client {
	public:
	void startFrame(Info& info) override {
	EXPECT_EQ(0, info.index++);
	}
	void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
	EXPECT_EQ(1, info.index++);
	}
	void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
	EXPECT_EQ(2, info.index++);
	}
	void endFrame(Info& info) override {
	EXPECT_EQ(3, info.index++);
	}
	};
	TEST(OpReorderer, simple) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(100, 200, [](RecordingCanvas& canvas) {
	SkBitmap bitmap = TestUtils::createSkBitmap(25, 25);
	canvas.drawRect(0, 0, 100, 200, SkPaint());
	canvas.drawBitmap(bitmap, 10, 10, nullptr);
	});
	OpReorderer reorderer;
	reorderer.defer(200, 200, *dl);

	Info info;
	reorderer.replayBakedOps<TestReceiver<SimpleReceiver, Info>>(info);
	EXPECT_EQ(4, info.index); // 2 ops + start + end
	}


	TEST(OpReorderer, simpleRejection) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
	canvas.save(SkCanvas::kMatrix_SaveFlag \| SkCanvas::kClip_SaveFlag);
	canvas.clipRect(200, 200, 400, 400, SkRegion::kIntersect_Op); // intersection should be empty
	canvas.drawRect(0, 0, 400, 400, SkPaint());
	canvas.restore();
	});
	OpReorderer reorderer;
	reorderer.defer(200, 200, *dl);

	Info info;
	reorderer.replayBakedOps<TestReceiver<FailReceiver, Info>>(info);
	}


	static int SIMPLE_BATCHING_LOOPS = 5;
	class SimpleBatchingReceiver : public TestReceiver<SimpleBatchingReceiver, Info>::Client {
	public:
	void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
	EXPECT_TRUE(info.index++ >= SIMPLE_BATCHING_LOOPS);
	}
	void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
	EXPECT_TRUE(info.index++ < SIMPLE_BATCHING_LOOPS);
	}
	};
	TEST(OpReorderer, simpleBatching) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
	SkBitmap bitmap = TestUtils::createSkBitmap(10, 10);

	// Alternate between drawing rects and bitmaps, with bitmaps overlapping rects.
	// Rects don't overlap bitmaps, so bitmaps should be brought to front as a group.
	canvas.save(SkCanvas::kMatrix_SaveFlag \| SkCanvas::kClip_SaveFlag);
	for (int i = 0; i < SIMPLE_BATCHING_LOOPS; i++) {
	canvas.translate(0, 10);
	canvas.drawRect(0, 0, 10, 10, SkPaint());
	canvas.drawBitmap(bitmap, 5, 0, nullptr);
	}
	canvas.restore();
	});

	OpReorderer reorderer;
	reorderer.defer(200, 200, *dl);

	Info info;
	reorderer.replayBakedOps<TestReceiver<SimpleBatchingReceiver, Info>>(info);
	EXPECT_EQ(2 * SIMPLE_BATCHING_LOOPS, info.index); // 2 x loops ops, because no merging (TODO: force no merging)
	}

	class RenderNodeReceiver : public TestReceiver<RenderNodeReceiver, Info>::Client {
	public:
	void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
	switch(info.index++) {
	case 0:
	EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clippedBounds);
	EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
	break;
	case 1:
	EXPECT_EQ(Rect(50, 50, 150, 150), state.computedState.clippedBounds);
	EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
	break;
	default:
	FAIL();
	}
	}
	};
	TEST(OpReorderer, renderNode) {
	sp<RenderNode> child = TestUtils::createNode<RecordingCanvas>(10, 10, 110, 110, [](RecordingCanvas& canvas) {
	SkPaint paint;
	paint.setColor(SK_ColorWHITE);
	canvas.drawRect(0, 0, 100, 100, paint);
	});

	RenderNode* childPtr = child.get();
	sp<RenderNode> parent = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200, [childPtr](RecordingCanvas& canvas) {
	SkPaint paint;
	paint.setColor(SK_ColorDKGRAY);
	canvas.drawRect(0, 0, 200, 200, paint);

	canvas.save(SkCanvas::kMatrix_SaveFlag \| SkCanvas::kClip_SaveFlag);
	canvas.translate(40, 40);
	canvas.drawRenderNode(childPtr);
	canvas.restore();
	});

	TestUtils::syncNodePropertiesAndDisplayList(child);
	TestUtils::syncNodePropertiesAndDisplayList(parent);

	std::vector< sp<RenderNode> > nodes;
	nodes.push_back(parent.get());

	OpReorderer reorderer;
	reorderer.defer(SkRect::MakeWH(200, 200), 200, 200, nodes);

	Info info;
	reorderer.replayBakedOps<TestReceiver<RenderNodeReceiver, Info>>(info);
	}

	class ClippedReceiver : public TestReceiver<ClippedReceiver, Info>::Client {
	public:
	void onBitmapOp(Info& info, const BitmapOp& op, const BakedOpState& state) override {
	EXPECT_EQ(0, info.index++);
	EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clippedBounds);
	EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clipRect);
	EXPECT_TRUE(state.computedState.transform.isIdentity());
	}
	};
	TEST(OpReorderer, clipped) {
	sp<RenderNode> node = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200, [](RecordingCanvas& canvas) {
	SkBitmap bitmap = TestUtils::createSkBitmap(200, 200);
	canvas.drawBitmap(bitmap, 0, 0, nullptr);
	});
	TestUtils::syncNodePropertiesAndDisplayList(node);
	std::vector< sp<RenderNode> > nodes;
	nodes.push_back(node.get());

	OpReorderer reorderer;
	reorderer.defer(SkRect::MakeLTRB(10, 20, 30, 40), // clip to small area, should see in receiver
	200, 200, nodes);

	Info info;
	reorderer.replayBakedOps<TestReceiver<ClippedReceiver, Info>>(info);
	}


	class SaveLayerSimpleReceiver : public TestReceiver<SaveLayerSimpleReceiver, Info>::Client {
	public:
	void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
	EXPECT_EQ(0, info.index++);
	EXPECT_EQ(Rect(10, 10, 190, 190), op.unmappedBounds);
	EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clippedBounds);
	EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clipRect);

	Matrix4 expectedTransform;
	expectedTransform.loadTranslate(-10, -10, 0);
	EXPECT_MATRIX_APPROX_EQ(expectedTransform, state.computedState.transform);
	}
	void onLayerOp(Info& info, const LayerOp& op, const BakedOpState& state) override {
	EXPECT_EQ(1, info.index++);
	EXPECT_EQ(Rect(10, 10, 190, 190), state.computedState.clippedBounds);
	EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clipRect);
	EXPECT_TRUE(state.computedState.transform.isIdentity());
	}
	};
	TEST(OpReorderer, saveLayerSimple) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
	canvas.saveLayerAlpha(10, 10, 190, 190, 128, SkCanvas::kClipToLayer_SaveFlag);
	canvas.drawRect(10, 10, 190, 190, SkPaint());
	canvas.restore();
	});

	OpReorderer reorderer;
	reorderer.defer(200, 200, *dl);

	Info info;
	reorderer.replayBakedOps<TestReceiver<SaveLayerSimpleReceiver, Info>>(info);
	EXPECT_EQ(2, info.index);
	}


	// saveLayer1 {rect1, saveLayer2 { rect2 } } will play back as rect2, rect1, layerOp2, layerOp1
	class SaveLayerNestedReceiver : public TestReceiver<SaveLayerNestedReceiver, Info>::Client {
	public:
	void onRectOp(Info& info, const RectOp& op, const BakedOpState& state) override {
	const int index = info.index++;
	if (index == 0) {
	EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner rect
	} else if (index == 1) {
	EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer rect
	} else { FAIL(); }
	}
	void onLayerOp(Info& info, const LayerOp& op, const BakedOpState& state) override {
	const int index = info.index++;
	if (index == 2) {
	EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner layer
	} else if (index == 3) {
	EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer layer
	} else { FAIL(); }
	}
	};
	TEST(OpReorderer, saveLayerNested) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(800, 800, [](RecordingCanvas& canvas) {
	canvas.saveLayerAlpha(0, 0, 800, 800, 128, SkCanvas::kClipToLayer_SaveFlag);
	{
	canvas.drawRect(0, 0, 800, 800, SkPaint());
	canvas.saveLayerAlpha(0, 0, 400, 400, 128, SkCanvas::kClipToLayer_SaveFlag);
	{
	canvas.drawRect(0, 0, 400, 400, SkPaint());
	}
	canvas.restore();
	}
	canvas.restore();
	});

	OpReorderer reorderer;
	reorderer.defer(800, 800, *dl);

	Info info;
	reorderer.replayBakedOps<TestReceiver<SaveLayerNestedReceiver, Info>>(info);
	EXPECT_EQ(4, info.index);
	}

	TEST(OpReorderer, saveLayerContentRejection) {
	auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
	canvas.save(SkCanvas::kMatrix_SaveFlag \| SkCanvas::kClip_SaveFlag);
	canvas.clipRect(200, 200, 400, 400, SkRegion::kIntersect_Op);
	canvas.saveLayerAlpha(200, 200, 400, 400, 128, SkCanvas::kClipToLayer_SaveFlag);

	// draw within save layer may still be recorded, but shouldn't be drawn
	canvas.drawRect(200, 200, 400, 400, SkPaint());

	canvas.restore();
	canvas.restore();
	});
	OpReorderer reorderer;
	reorderer.defer(200, 200, *dl);
	Info info;

	// should see no ops, even within the layer, since the layer should be rejected
	reorderer.replayBakedOps<TestReceiver<FailReceiver, Info>>(info);
	}

	} // namespace uirenderer
	} // namespace android