tests/RecordOptsTest.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "Test.h"
 #include "RecordTestUtils.h"

 #include "SkColorFilter.h"
 #include "SkRecord.h"
 #include "SkRecordOpts.h"
 #include "SkRecorder.h"
 #include "SkRecords.h"
 #include "SkXfermode.h"
 #include "SkPictureRecorder.h"
 #include "SkPictureImageFilter.h"
 #include "SkSurface.h"

 static const int W = 1920, H = 1080;

 DEF_TEST(RecordOpts_NoopDraw, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     recorder.drawRect(SkRect::MakeWH(200, 200), SkPaint());
     recorder.drawRect(SkRect::MakeWH(300, 300), SkPaint());
     recorder.drawRect(SkRect::MakeWH(100, 100), SkPaint());

     record.replace<SkRecords::NoOp>(1);  // NoOps should be allowed.

     SkRecordNoopSaveRestores(&record);

     REPORTER_ASSERT(r, 2 == count_instances_of_type<SkRecords::DrawRect>(record));
 }

 DEF_TEST(RecordOpts_SingleNoopSaveRestore, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     recorder.save();
         recorder.clipRect(SkRect::MakeWH(200, 200));
     recorder.restore();

     SkRecordNoopSaveRestores(&record);
     for (int i = 0; i < 3; i++) {
         assert_type<SkRecords::NoOp>(r, record, i);
     }
 }

 DEF_TEST(RecordOpts_NoopSaveRestores, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     // The second pass will clean up this pair after the first pass noops all the innards.
     recorder.save();
         // A simple pointless pair of save/restore.
         recorder.save();
         recorder.restore();

         // As long as we don't draw in there, everything is a noop.
         recorder.save();
             recorder.clipRect(SkRect::MakeWH(200, 200));
             recorder.clipRect(SkRect::MakeWH(100, 100));
         recorder.restore();
     recorder.restore();

     SkRecordNoopSaveRestores(&record);
     for (int index = 0; index < record.count(); index++) {
         assert_type<SkRecords::NoOp>(r, record, index);
     }
 }

 DEF_TEST(RecordOpts_SaveSaveLayerRestoreRestore, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     // A previous bug NoOp'd away the first 3 commands.
     recorder.save();
         recorder.saveLayer(nullptr, nullptr);
         recorder.restore();
     recorder.restore();

     SkRecordNoopSaveRestores(&record);
     switch (record.count()) {
         case 4:
             assert_type<SkRecords::Save>     (r, record, 0);
             assert_type<SkRecords::SaveLayer>(r, record, 1);
             assert_type<SkRecords::Restore>  (r, record, 2);
             assert_type<SkRecords::Restore>  (r, record, 3);
             break;
         case 2:
             assert_type<SkRecords::SaveLayer>(r, record, 0);
             assert_type<SkRecords::Restore>  (r, record, 1);
             break;
         case 0:
             break;
         default:
             REPORTER_ASSERT(r, false);
     }
 }

 static void assert_savelayer_restore(skiatest::Reporter* r,
                                      SkRecord* record,
                                      int i,
                                      bool shouldBeNoOped) {
     SkRecordNoopSaveLayerDrawRestores(record);
     if (shouldBeNoOped) {
         assert_type<SkRecords::NoOp>(r, *record, i);
         assert_type<SkRecords::NoOp>(r, *record, i+1);
     } else {
         assert_type<SkRecords::SaveLayer>(r, *record, i);
         assert_type<SkRecords::Restore>(r, *record, i+1);
     }
 }

 static void assert_savelayer_draw_restore(skiatest::Reporter* r,
                                           SkRecord* record,
                                           int i,
                                           bool shouldBeNoOped) {
     SkRecordNoopSaveLayerDrawRestores(record);
     if (shouldBeNoOped) {
         assert_type<SkRecords::NoOp>(r, *record, i);
         assert_type<SkRecords::NoOp>(r, *record, i+2);
     } else {
         assert_type<SkRecords::SaveLayer>(r, *record, i);
         assert_type<SkRecords::Restore>(r, *record, i+2);
     }
 }

 #include "SkBlurImageFilter.h"
 DEF_TEST(RecordOpts_NoopSaveLayerDrawRestore, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     SkRect bounds = SkRect::MakeWH(100, 200);
     SkRect   draw = SkRect::MakeWH(50, 60);

     SkPaint alphaOnlyLayerPaint, translucentLayerPaint, xfermodeLayerPaint;
     alphaOnlyLayerPaint.setColor(0x03000000);  // Only alpha.
     translucentLayerPaint.setColor(0x03040506);  // Not only alpha.
     xfermodeLayerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);  // Any effect will do.

     SkPaint opaqueDrawPaint, translucentDrawPaint;
     opaqueDrawPaint.setColor(0xFF020202);  // Opaque.
     translucentDrawPaint.setColor(0x0F020202);  // Not opaque.

     // SaveLayer/Restore removed: No paint = no point.
     recorder.saveLayer(nullptr, nullptr);
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 0, true);

     // Bounds don't matter.
     recorder.saveLayer(&bounds, nullptr);
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 3, true);

     // TODO(mtklein): test case with null draw paint

     // No change: layer paint isn't alpha-only.
     recorder.saveLayer(nullptr, &translucentLayerPaint);
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 6, false);

     // No change: layer paint has an effect.
     recorder.saveLayer(nullptr, &xfermodeLayerPaint);
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 9, false);

     // SaveLayer/Restore removed: we can fold in the alpha!
     recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
         recorder.drawRect(draw, translucentDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 12, true);

     // SaveLayer/Restore removed: we can fold in the alpha!
     recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 15, true);

     const SkRecords::DrawRect* drawRect = assert_type<SkRecords::DrawRect>(r, record, 16);
     REPORTER_ASSERT(r, drawRect != nullptr);
     REPORTER_ASSERT(r, drawRect->paint.getColor() == 0x03020202);

     // saveLayer w/ backdrop should NOT go away
     sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(3, 3, nullptr));
     recorder.saveLayer({ nullptr, nullptr, filter.get(), 0});
         recorder.drawRect(draw, opaqueDrawPaint);
     recorder.restore();
     assert_savelayer_draw_restore(r, &record, 18, false);
 }

 static void assert_merge_svg_opacity_and_filter_layers(skiatest::Reporter* r,
                                                        SkRecord* record,
                                                        int i,
                                                        bool shouldBeNoOped) {
     SkRecordMergeSvgOpacityAndFilterLayers(record);
     if (shouldBeNoOped) {
         assert_type<SkRecords::NoOp>(r, *record, i);
         assert_type<SkRecords::NoOp>(r, *record, i + 6);
     } else {
         assert_type<SkRecords::SaveLayer>(r, *record, i);
         assert_type<SkRecords::Restore>(r, *record, i + 6);
     }
 }

 DEF_TEST(RecordOpts_MergeSvgOpacityAndFilterLayers, r) {
     SkRecord record;
     SkRecorder recorder(&record, W, H);

     SkRect bounds = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(200));
     SkRect clip = SkRect::MakeWH(SkIntToScalar(50), SkIntToScalar(60));

     SkPaint alphaOnlyLayerPaint;
     alphaOnlyLayerPaint.setColor(0x03000000);  // Only alpha.
     SkPaint translucentLayerPaint;
     translucentLayerPaint.setColor(0x03040506);  // Not only alpha.
     SkPaint xfermodePaint;
     xfermodePaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
     SkPaint colorFilterPaint;
     colorFilterPaint.setColorFilter(
         SkColorFilter::MakeModeFilter(SK_ColorLTGRAY, SkXfermode::kSrcIn_Mode));

     SkPaint opaqueFilterLayerPaint;
     opaqueFilterLayerPaint.setColor(0xFF020202);  // Opaque.
     SkPaint translucentFilterLayerPaint;
     translucentFilterLayerPaint.setColor(0x0F020202);  // Not opaque.
     sk_sp<SkPicture> shape;
     {
         SkPictureRecorder recorder;
         SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(100), SkIntToScalar(100));
         SkPaint shapePaint;
         shapePaint.setColor(SK_ColorWHITE);
         canvas->drawRect(SkRect::MakeWH(SkIntToScalar(50), SkIntToScalar(50)), shapePaint);
         shape = recorder.finishRecordingAsPicture();
     }
     translucentFilterLayerPaint.setImageFilter(SkPictureImageFilter::Make(shape));

     int index = 0;

     {
         sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(3, 3, nullptr));
         // first (null) should be optimized, 2nd should not
         SkImageFilter* filters[] = { nullptr, filter.get() };

         // Any combination of these should cause the pattern to be optimized.
         SkRect* firstBounds[] = { nullptr, &bounds };
         SkPaint* firstPaints[] = { nullptr, &alphaOnlyLayerPaint };
         SkRect* secondBounds[] = { nullptr, &bounds };
         SkPaint* secondPaints[] = { &opaqueFilterLayerPaint, &translucentFilterLayerPaint };

         for (auto outerF : filters) {
             bool outerNoOped = !outerF;
             for (auto innerF : filters) {
                 for (size_t i = 0; i < SK_ARRAY_COUNT(firstBounds); ++ i) {
                     for (size_t j = 0; j < SK_ARRAY_COUNT(firstPaints); ++j) {
                         for (size_t k = 0; k < SK_ARRAY_COUNT(secondBounds); ++k) {
                             for (size_t m = 0; m < SK_ARRAY_COUNT(secondPaints); ++m) {
                                 bool innerNoOped = !secondBounds[k] && !secondPaints[m] && !innerF;

                                 recorder.saveLayer({firstBounds[i], firstPaints[j], outerF, 0});
                                 recorder.save();
                                 recorder.clipRect(clip);
                                 recorder.saveLayer({secondBounds[k], secondPaints[m], innerF, 0});
                                 recorder.restore();
                                 recorder.restore();
                                 recorder.restore();
                                 assert_merge_svg_opacity_and_filter_layers(r, &record, index,
                                                                            outerNoOped);
                                 assert_savelayer_restore(r, &record, index + 3, innerNoOped);
                                 index += 7;
                             }
                         }
                     }
                 }
             }
         }
     }

     // These should cause the pattern to stay unoptimized:
     struct {
         SkPaint* firstPaint;
         SkPaint* secondPaint;
     } noChangeTests[] = {
         // No change: nullptr filter layer paint not implemented.
         { &alphaOnlyLayerPaint, nullptr },
         // No change: layer paint is not alpha-only.
         { &translucentLayerPaint, &opaqueFilterLayerPaint },
         // No change: layer paint has an xfereffect.
         { &xfermodePaint, &opaqueFilterLayerPaint },
         // No change: filter layer paint has an xfereffect.
         { &alphaOnlyLayerPaint, &xfermodePaint },
         // No change: layer paint has a color filter.
         { &colorFilterPaint, &opaqueFilterLayerPaint },
         // No change: filter layer paint has a color filter (until the optimization accounts for
         // constant color draws that can filter the color).
         { &alphaOnlyLayerPaint, &colorFilterPaint }
     };

     for (size_t i = 0; i < SK_ARRAY_COUNT(noChangeTests); ++i) {
         recorder.saveLayer(nullptr, noChangeTests[i].firstPaint);
         recorder.save();
         recorder.clipRect(clip);
         recorder.saveLayer(nullptr, noChangeTests[i].secondPaint);
         recorder.restore();
         recorder.restore();
         recorder.restore();
         assert_merge_svg_opacity_and_filter_layers(r, &record, index, false);
         index += 7;
     }

     // Test the folded alpha value.
     recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
     recorder.save();
     recorder.clipRect(clip);
     recorder.saveLayer(nullptr, &opaqueFilterLayerPaint);
     recorder.restore();
     recorder.restore();
     recorder.restore();
     assert_merge_svg_opacity_and_filter_layers(r, &record, index, true);

     const SkRecords::SaveLayer* saveLayer = assert_type<SkRecords::SaveLayer>(r, record, index + 3);
     REPORTER_ASSERT(r, saveLayer != nullptr);
     REPORTER_ASSERT(r, saveLayer->paint->getColor() == 0x03020202);

     index += 7;

     // Test that currently we do not fold alphas for patterns without the clip. This is just not
     // implemented.
     recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
     recorder.saveLayer(nullptr, &opaqueFilterLayerPaint);
     recorder.restore();
     recorder.restore();
     SkRecordMergeSvgOpacityAndFilterLayers(&record);
     assert_type<SkRecords::SaveLayer>(r, record, index);
     assert_type<SkRecords::SaveLayer>(r, record, index + 1);
     assert_type<SkRecords::Restore>(r, record, index + 2);
     assert_type<SkRecords::Restore>(r, record, index + 3);
     index += 4;
 }

 static void do_draw(SkCanvas* canvas, SkColor color, bool doLayer) {
     canvas->drawColor(SK_ColorWHITE);

     SkPaint p;
     p.setColor(color);

     if (doLayer) {
         canvas->saveLayer(nullptr, nullptr);
         p.setXfermodeMode(SkXfermode::kSrc_Mode);
         canvas->drawPaint(p);
         canvas->restore();
     } else {
         canvas->drawPaint(p);
     }
 }

 static bool is_equal(SkSurface* a, SkSurface* b) {
     const SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1);
     SkPMColor ca, cb;
     a->readPixels(info, &ca, sizeof(SkPMColor), 0, 0);
     b->readPixels(info, &cb, sizeof(SkPMColor), 0, 0);
     return ca == cb;
 }

 // Test drawing w/ and w/o a simple layer (no bounds or paint), so see that drawing ops
 // that *should* draw the same in fact do.
 //
 // Perform this test twice : once directly, and once via a picture
 //
 static void do_savelayer_srcmode(skiatest::Reporter* r, SkColor color) {
     for (int doPicture = 0; doPicture <= 1; ++doPicture) {
         sk_sp<SkSurface> surf0 = SkSurface::MakeRasterN32Premul(10, 10);
         sk_sp<SkSurface> surf1 = SkSurface::MakeRasterN32Premul(10, 10);
         SkCanvas* c0 = surf0->getCanvas();
         SkCanvas* c1 = surf1->getCanvas();

         SkPictureRecorder rec0, rec1;
         if (doPicture) {
             c0 = rec0.beginRecording(10, 10);
             c1 = rec1.beginRecording(10, 10);
         }

         do_draw(c0, color, false);
         do_draw(c1, color, true);

         if (doPicture) {
             surf0->getCanvas()->drawPicture(rec0.finishRecordingAsPicture());
             surf1->getCanvas()->drawPicture(rec1.finishRecordingAsPicture());
         }

         // we replicate the assert so we can see which line is reported if there is a failure
         if (doPicture) {
             REPORTER_ASSERT(r, is_equal(surf0.get(), surf1.get()));
         } else {
             REPORTER_ASSERT(r, is_equal(surf0.get(), surf1.get()));
         }
     }
 }

 DEF_TEST(savelayer_srcmode_opaque, r) {
     do_savelayer_srcmode(r, SK_ColorRED);
 }

 DEF_TEST(savelayer_srcmode_alpha, r) {
     do_savelayer_srcmode(r, 0x80FF0000);
 }
	/*
	* Copyright 2014 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "Test.h"
	#include "RecordTestUtils.h"

	#include "SkColorFilter.h"
	#include "SkRecord.h"
	#include "SkRecordOpts.h"
	#include "SkRecorder.h"
	#include "SkRecords.h"
	#include "SkXfermode.h"
	#include "SkPictureRecorder.h"
	#include "SkPictureImageFilter.h"
	#include "SkSurface.h"

	static const int W = 1920, H = 1080;

	DEF_TEST(RecordOpts_NoopDraw, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	recorder.drawRect(SkRect::MakeWH(200, 200), SkPaint());
	recorder.drawRect(SkRect::MakeWH(300, 300), SkPaint());
	recorder.drawRect(SkRect::MakeWH(100, 100), SkPaint());

	record.replace<SkRecords::NoOp>(1); // NoOps should be allowed.

	SkRecordNoopSaveRestores(&record);

	REPORTER_ASSERT(r, 2 == count_instances_of_type<SkRecords::DrawRect>(record));
	}

	DEF_TEST(RecordOpts_SingleNoopSaveRestore, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	recorder.save();
	recorder.clipRect(SkRect::MakeWH(200, 200));
	recorder.restore();

	SkRecordNoopSaveRestores(&record);
	for (int i = 0; i < 3; i++) {
	assert_type<SkRecords::NoOp>(r, record, i);
	}
	}

	DEF_TEST(RecordOpts_NoopSaveRestores, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	// The second pass will clean up this pair after the first pass noops all the innards.
	recorder.save();
	// A simple pointless pair of save/restore.
	recorder.save();
	recorder.restore();

	// As long as we don't draw in there, everything is a noop.
	recorder.save();
	recorder.clipRect(SkRect::MakeWH(200, 200));
	recorder.clipRect(SkRect::MakeWH(100, 100));
	recorder.restore();
	recorder.restore();

	SkRecordNoopSaveRestores(&record);
	for (int index = 0; index < record.count(); index++) {
	assert_type<SkRecords::NoOp>(r, record, index);
	}
	}

	DEF_TEST(RecordOpts_SaveSaveLayerRestoreRestore, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	// A previous bug NoOp'd away the first 3 commands.
	recorder.save();
	recorder.saveLayer(nullptr, nullptr);
	recorder.restore();
	recorder.restore();

	SkRecordNoopSaveRestores(&record);
	switch (record.count()) {
	case 4:
	assert_type<SkRecords::Save> (r, record, 0);
	assert_type<SkRecords::SaveLayer>(r, record, 1);
	assert_type<SkRecords::Restore> (r, record, 2);
	assert_type<SkRecords::Restore> (r, record, 3);
	break;
	case 2:
	assert_type<SkRecords::SaveLayer>(r, record, 0);
	assert_type<SkRecords::Restore> (r, record, 1);
	break;
	case 0:
	break;
	default:
	REPORTER_ASSERT(r, false);
	}
	}

	static void assert_savelayer_restore(skiatest::Reporter* r,
	SkRecord* record,
	int i,
	bool shouldBeNoOped) {
	SkRecordNoopSaveLayerDrawRestores(record);
	if (shouldBeNoOped) {
	assert_type<SkRecords::NoOp>(r, *record, i);
	assert_type<SkRecords::NoOp>(r, *record, i+1);
	} else {
	assert_type<SkRecords::SaveLayer>(r, *record, i);
	assert_type<SkRecords::Restore>(r, *record, i+1);
	}
	}

	static void assert_savelayer_draw_restore(skiatest::Reporter* r,
	SkRecord* record,
	int i,
	bool shouldBeNoOped) {
	SkRecordNoopSaveLayerDrawRestores(record);
	if (shouldBeNoOped) {
	assert_type<SkRecords::NoOp>(r, *record, i);
	assert_type<SkRecords::NoOp>(r, *record, i+2);
	} else {
	assert_type<SkRecords::SaveLayer>(r, *record, i);
	assert_type<SkRecords::Restore>(r, *record, i+2);
	}
	}

	#include "SkBlurImageFilter.h"
	DEF_TEST(RecordOpts_NoopSaveLayerDrawRestore, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	SkRect bounds = SkRect::MakeWH(100, 200);
	SkRect draw = SkRect::MakeWH(50, 60);

	SkPaint alphaOnlyLayerPaint, translucentLayerPaint, xfermodeLayerPaint;
	alphaOnlyLayerPaint.setColor(0x03000000); // Only alpha.
	translucentLayerPaint.setColor(0x03040506); // Not only alpha.
	xfermodeLayerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode); // Any effect will do.

	SkPaint opaqueDrawPaint, translucentDrawPaint;
	opaqueDrawPaint.setColor(0xFF020202); // Opaque.
	translucentDrawPaint.setColor(0x0F020202); // Not opaque.

	// SaveLayer/Restore removed: No paint = no point.
	recorder.saveLayer(nullptr, nullptr);
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 0, true);

	// Bounds don't matter.
	recorder.saveLayer(&bounds, nullptr);
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 3, true);

	// TODO(mtklein): test case with null draw paint

	// No change: layer paint isn't alpha-only.
	recorder.saveLayer(nullptr, &translucentLayerPaint);
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 6, false);

	// No change: layer paint has an effect.
	recorder.saveLayer(nullptr, &xfermodeLayerPaint);
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 9, false);

	// SaveLayer/Restore removed: we can fold in the alpha!
	recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
	recorder.drawRect(draw, translucentDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 12, true);

	// SaveLayer/Restore removed: we can fold in the alpha!
	recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 15, true);

	const SkRecords::DrawRect* drawRect = assert_type<SkRecords::DrawRect>(r, record, 16);
	REPORTER_ASSERT(r, drawRect != nullptr);
	REPORTER_ASSERT(r, drawRect->paint.getColor() == 0x03020202);

	// saveLayer w/ backdrop should NOT go away
	sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(3, 3, nullptr));
	recorder.saveLayer({ nullptr, nullptr, filter.get(), 0});
	recorder.drawRect(draw, opaqueDrawPaint);
	recorder.restore();
	assert_savelayer_draw_restore(r, &record, 18, false);
	}

	static void assert_merge_svg_opacity_and_filter_layers(skiatest::Reporter* r,
	SkRecord* record,
	int i,
	bool shouldBeNoOped) {
	SkRecordMergeSvgOpacityAndFilterLayers(record);
	if (shouldBeNoOped) {
	assert_type<SkRecords::NoOp>(r, *record, i);
	assert_type<SkRecords::NoOp>(r, *record, i + 6);
	} else {
	assert_type<SkRecords::SaveLayer>(r, *record, i);
	assert_type<SkRecords::Restore>(r, *record, i + 6);
	}
	}

	DEF_TEST(RecordOpts_MergeSvgOpacityAndFilterLayers, r) {
	SkRecord record;
	SkRecorder recorder(&record, W, H);

	SkRect bounds = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(200));
	SkRect clip = SkRect::MakeWH(SkIntToScalar(50), SkIntToScalar(60));

	SkPaint alphaOnlyLayerPaint;
	alphaOnlyLayerPaint.setColor(0x03000000); // Only alpha.
	SkPaint translucentLayerPaint;
	translucentLayerPaint.setColor(0x03040506); // Not only alpha.
	SkPaint xfermodePaint;
	xfermodePaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
	SkPaint colorFilterPaint;
	colorFilterPaint.setColorFilter(
	SkColorFilter::MakeModeFilter(SK_ColorLTGRAY, SkXfermode::kSrcIn_Mode));

	SkPaint opaqueFilterLayerPaint;
	opaqueFilterLayerPaint.setColor(0xFF020202); // Opaque.
	SkPaint translucentFilterLayerPaint;
	translucentFilterLayerPaint.setColor(0x0F020202); // Not opaque.
	sk_sp<SkPicture> shape;
	{
	SkPictureRecorder recorder;
	SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(100), SkIntToScalar(100));
	SkPaint shapePaint;
	shapePaint.setColor(SK_ColorWHITE);
	canvas->drawRect(SkRect::MakeWH(SkIntToScalar(50), SkIntToScalar(50)), shapePaint);
	shape = recorder.finishRecordingAsPicture();
	}
	translucentFilterLayerPaint.setImageFilter(SkPictureImageFilter::Make(shape));

	int index = 0;

	{
	sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(3, 3, nullptr));
	// first (null) should be optimized, 2nd should not
	SkImageFilter* filters[] = { nullptr, filter.get() };

	// Any combination of these should cause the pattern to be optimized.
	SkRect* firstBounds[] = { nullptr, &bounds };
	SkPaint* firstPaints[] = { nullptr, &alphaOnlyLayerPaint };
	SkRect* secondBounds[] = { nullptr, &bounds };
	SkPaint* secondPaints[] = { &opaqueFilterLayerPaint, &translucentFilterLayerPaint };

	for (auto outerF : filters) {
	bool outerNoOped = !outerF;
	for (auto innerF : filters) {
	for (size_t i = 0; i < SK_ARRAY_COUNT(firstBounds); ++ i) {
	for (size_t j = 0; j < SK_ARRAY_COUNT(firstPaints); ++j) {
	for (size_t k = 0; k < SK_ARRAY_COUNT(secondBounds); ++k) {
	for (size_t m = 0; m < SK_ARRAY_COUNT(secondPaints); ++m) {
	bool innerNoOped = !secondBounds[k] && !secondPaints[m] && !innerF;

	recorder.saveLayer({firstBounds[i], firstPaints[j], outerF, 0});
	recorder.save();
	recorder.clipRect(clip);
	recorder.saveLayer({secondBounds[k], secondPaints[m], innerF, 0});
	recorder.restore();
	recorder.restore();
	recorder.restore();
	assert_merge_svg_opacity_and_filter_layers(r, &record, index,
	outerNoOped);
	assert_savelayer_restore(r, &record, index + 3, innerNoOped);
	index += 7;
	}
	}
	}
	}
	}
	}
	}

	// These should cause the pattern to stay unoptimized:
	struct {
	SkPaint* firstPaint;
	SkPaint* secondPaint;
	} noChangeTests[] = {
	// No change: nullptr filter layer paint not implemented.
	{ &alphaOnlyLayerPaint, nullptr },
	// No change: layer paint is not alpha-only.
	{ &translucentLayerPaint, &opaqueFilterLayerPaint },
	// No change: layer paint has an xfereffect.
	{ &xfermodePaint, &opaqueFilterLayerPaint },
	// No change: filter layer paint has an xfereffect.
	{ &alphaOnlyLayerPaint, &xfermodePaint },
	// No change: layer paint has a color filter.
	{ &colorFilterPaint, &opaqueFilterLayerPaint },
	// No change: filter layer paint has a color filter (until the optimization accounts for
	// constant color draws that can filter the color).
	{ &alphaOnlyLayerPaint, &colorFilterPaint }
	};

	for (size_t i = 0; i < SK_ARRAY_COUNT(noChangeTests); ++i) {
	recorder.saveLayer(nullptr, noChangeTests[i].firstPaint);
	recorder.save();
	recorder.clipRect(clip);
	recorder.saveLayer(nullptr, noChangeTests[i].secondPaint);
	recorder.restore();
	recorder.restore();
	recorder.restore();
	assert_merge_svg_opacity_and_filter_layers(r, &record, index, false);
	index += 7;
	}

	// Test the folded alpha value.
	recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
	recorder.save();
	recorder.clipRect(clip);
	recorder.saveLayer(nullptr, &opaqueFilterLayerPaint);
	recorder.restore();
	recorder.restore();
	recorder.restore();
	assert_merge_svg_opacity_and_filter_layers(r, &record, index, true);

	const SkRecords::SaveLayer* saveLayer = assert_type<SkRecords::SaveLayer>(r, record, index + 3);
	REPORTER_ASSERT(r, saveLayer != nullptr);
	REPORTER_ASSERT(r, saveLayer->paint->getColor() == 0x03020202);

	index += 7;

	// Test that currently we do not fold alphas for patterns without the clip. This is just not
	// implemented.
	recorder.saveLayer(nullptr, &alphaOnlyLayerPaint);
	recorder.saveLayer(nullptr, &opaqueFilterLayerPaint);
	recorder.restore();
	recorder.restore();
	SkRecordMergeSvgOpacityAndFilterLayers(&record);
	assert_type<SkRecords::SaveLayer>(r, record, index);
	assert_type<SkRecords::SaveLayer>(r, record, index + 1);
	assert_type<SkRecords::Restore>(r, record, index + 2);
	assert_type<SkRecords::Restore>(r, record, index + 3);
	index += 4;
	}

	static void do_draw(SkCanvas* canvas, SkColor color, bool doLayer) {
	canvas->drawColor(SK_ColorWHITE);

	SkPaint p;
	p.setColor(color);

	if (doLayer) {
	canvas->saveLayer(nullptr, nullptr);
	p.setXfermodeMode(SkXfermode::kSrc_Mode);
	canvas->drawPaint(p);
	canvas->restore();
	} else {
	canvas->drawPaint(p);
	}
	}

	static bool is_equal(SkSurface* a, SkSurface* b) {
	const SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1);
	SkPMColor ca, cb;
	a->readPixels(info, &ca, sizeof(SkPMColor), 0, 0);
	b->readPixels(info, &cb, sizeof(SkPMColor), 0, 0);
	return ca == cb;
	}

	// Test drawing w/ and w/o a simple layer (no bounds or paint), so see that drawing ops
	// that should draw the same in fact do.
	//
	// Perform this test twice : once directly, and once via a picture
	//
	static void do_savelayer_srcmode(skiatest::Reporter* r, SkColor color) {
	for (int doPicture = 0; doPicture <= 1; ++doPicture) {
	sk_sp<SkSurface> surf0 = SkSurface::MakeRasterN32Premul(10, 10);
	sk_sp<SkSurface> surf1 = SkSurface::MakeRasterN32Premul(10, 10);
	SkCanvas* c0 = surf0->getCanvas();
	SkCanvas* c1 = surf1->getCanvas();

	SkPictureRecorder rec0, rec1;
	if (doPicture) {
	c0 = rec0.beginRecording(10, 10);
	c1 = rec1.beginRecording(10, 10);
	}

	do_draw(c0, color, false);
	do_draw(c1, color, true);

	if (doPicture) {
	surf0->getCanvas()->drawPicture(rec0.finishRecordingAsPicture());
	surf1->getCanvas()->drawPicture(rec1.finishRecordingAsPicture());
	}

	// we replicate the assert so we can see which line is reported if there is a failure
	if (doPicture) {
	REPORTER_ASSERT(r, is_equal(surf0.get(), surf1.get()));
	} else {
	REPORTER_ASSERT(r, is_equal(surf0.get(), surf1.get()));
	}
	}
	}

	DEF_TEST(savelayer_srcmode_opaque, r) {
	do_savelayer_srcmode(r, SK_ColorRED);
	}

	DEF_TEST(savelayer_srcmode_alpha, r) {
	do_savelayer_srcmode(r, 0x80FF0000);
	}