ImageFilterTest.cpp File Reference

#include "include/core/SkAlphaType.h"
#include "include/core/SkBBHFactory.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkColorType.h"
#include "include/core/SkData.h"
#include "include/core/SkFlattenable.h"
#include "include/core/SkFont.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkPoint3.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkSamplingOptions.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSerialProcs.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkSurface.h"
#include "include/core/SkSurfaceProps.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkPerlinNoiseShader.h"
#include "include/encode/SkPngEncoder.h"
#include "include/gpu/GpuTypes.h"
#include "include/gpu/GrTypes.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTo.h"
#include "src/core/SkBitmapDevice.h"
#include "src/core/SkDevice.h"
#include "src/core/SkImageFilterTypes.h"
#include "src/core/SkImageFilter_Base.h"
#include "src/core/SkRectPriv.h"
#include "src/core/SkSpecialImage.h"
#include "src/effects/colorfilters/SkColorFilterBase.h"
#include "src/image/SkImage_Base.h"
#include "tests/CtsEnforcement.h"
#include "tests/Test.h"
#include "tools/EncodeUtils.h"
#include "tools/GpuToolUtils.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"
#include <algorithm>
#include <cstdint>
#include <cstring>
#include <utility>
#include <limits>

Go to the source code of this file.

Functions
static skif::Context	make_context (const SkIRect &out, const SkSpecialImage *src)
static skif::Context	make_context (int outWidth, int outHeight, const SkSpecialImage *src)
static sk_sp< SkImage >	make_small_image ()
static sk_sp< SkImageFilter >	make_scale (float amount, sk_sp< SkImageFilter > input)
static sk_sp< SkImageFilter >	make_grayscale (sk_sp< SkImageFilter > input, const SkIRect *cropRect)
static sk_sp< SkImageFilter >	make_blue (sk_sp< SkImageFilter > input, const SkIRect *cropRect)
static sk_sp< SkDevice >	create_empty_device (GrRecordingContext *rContext, int widthHeight)
static sk_sp< SkSpecialImage >	create_empty_special_image (GrRecordingContext *rContext, int widthHeight, SkColor4f color=SkColors::kTransparent)
	DEF_TEST (ImageFilter, reporter)
static void	test_cropRects (skiatest::Reporter *reporter, GrRecordingContext *rContext)
static bool	special_image_to_bitmap (GrDirectContext *dContext, const SkSpecialImage *src, SkBitmap *dst)
static void	test_negative_blur_sigma (skiatest::Reporter *reporter, GrDirectContext *dContext)
	DEF_TEST (ImageFilterNegativeBlurSigma, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterNegativeBlurSigma_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
static void	test_morphology_radius_with_mirror_ctm (skiatest::Reporter *reporter, GrDirectContext *dContext)
	DEF_TEST (MorphologyFilterRadiusWithMirrorCTM, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (MorphologyFilterRadiusWithMirrorCTM_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
static void	test_zero_blur_sigma (skiatest::Reporter *reporter, GrDirectContext *dContext)
	DEF_TEST (ImageFilterZeroBlurSigma, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterZeroBlurSigma_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
static void	test_fail_affects_transparent_black (skiatest::Reporter *reporter, GrDirectContext *dContext)
	DEF_TEST (ImageFilterFailAffectsTransparentBlack, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterFailAffectsTransparentBlack_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterDrawTiled, reporter)
static void	draw_saveLayer_picture (int width, int height, int tileSize, SkBBHFactory *factory, SkBitmap *result)
	DEF_TEST (ImageFilterDrawMatrixBBH, reporter)
static sk_sp< SkImageFilter >	make_blur (sk_sp< SkImageFilter > input)
static sk_sp< SkImageFilter >	make_drop_shadow (sk_sp< SkImageFilter > input)
	DEF_TEST (ImageFilterBlurThenShadowBounds, reporter)
	DEF_TEST (ImageFilterShadowThenBlurBounds, reporter)
	DEF_TEST (ImageFilterDilateThenBlurBounds, reporter)
	DEF_TEST (ImageFilterScaledBlurRadius, reporter)
	DEF_TEST (ImageFilterComposedBlurFastBounds, reporter)
	DEF_TEST (ImageFilterUnionBounds, reporter)
static void	test_imagefilter_merge_result_size (skiatest::Reporter *reporter, GrRecordingContext *rContext)
	DEF_TEST (ImageFilterMergeResultSize, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterMergeResultSize_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
static void	draw_blurred_rect (SkCanvas *canvas)
static void	draw_picture_clipped (SkCanvas *canvas, const SkRect &clipRect, const SkPicture *picture)
	DEF_TEST (ImageFilterDrawTiledBlurRTree, reporter)
	DEF_TEST (ImageFilterMatrixConvolution, reporter)
	DEF_TEST (ImageFilterMatrixConvolutionBorder, reporter)
static void	test_big_kernel (skiatest::Reporter *reporter, GrRecordingContext *rContext)
	DEF_TEST (ImageFilterMatrixConvolutionBigKernel, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterMatrixConvolutionBigKernel_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterCropRect, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterCropRect_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterMatrix, reporter)
static void	test_clipped_picture_imagefilter (skiatest::Reporter *reporter, GrRecordingContext *rContext)
	DEF_TEST (ImageFilterClippedPictureImageFilter, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterClippedPictureImageFilter_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterEmptySaveLayer, reporter)
static void	test_huge_blur (SkCanvas *canvas, skiatest::Reporter *reporter)
	DEF_TEST (HugeBlurImageFilter, reporter)
	DEF_TEST (ImageFilterMatrixConvolutionTest, reporter)
static void	test_xfermode_cropped_input (SkSurface *surf, skiatest::Reporter *reporter)
	DEF_TEST (ImageFilterNestedSaveLayer, reporter)
	DEF_TEST (XfermodeImageFilterCroppedInput, reporter)
static void	test_composed_imagefilter_offset (skiatest::Reporter *reporter, GrRecordingContext *rContext)
	DEF_TEST (ComposedImageFilterOffset, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ComposedImageFilterOffset_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
static void	test_composed_imagefilter_bounds (skiatest::Reporter *reporter, GrDirectContext *dContext)
	DEF_TEST (ComposedImageFilterBounds, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ComposedImageFilterBounds_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterCanComputeFastBounds, reporter)
	DEF_TEST (ImageFilterImageSourceSerialization, reporter)
	DEF_TEST (ImageFilterImageSourceUninitialized, r)
static void	test_large_blur_input (skiatest::Reporter *reporter, SkCanvas *canvas)
	DEF_TEST (ImageFilterBlurLargeImage, reporter)
static void	test_make_with_filter (skiatest::Reporter *reporter, const std::function< sk_sp< SkSurface >(int width, int height)> &createSurface, const std::function< sk_sp< SkImage >(sk_sp< SkImage > src, const SkImageFilter *filter, const SkIRect &subset, const SkIRect &clipBounds, SkIRect *outSubset, SkIPoint *offset)> &makeWithFilter)
	DEF_TEST (ImageFilterMakeWithFilter, reporter)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterMakeWithFilter_Ganesh, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (ImageFilterHugeBlur_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (XfermodeImageFilterCroppedInput_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_GANESH_TEST_FOR_ALL_CONTEXTS (ImageFilterBlurLargeImage_Gpu, reporter, ctxInfo, CtsEnforcement::kNever)
	DEF_TEST (ImageFilterComplexCTM, reporter)
	DEF_TEST (XfermodeImageFilterBounds, reporter)
	DEF_TEST (OffsetImageFilterBounds, reporter)
	DEF_TEST (OffsetImageFilterBoundsNoOverflow, reporter)
static void	test_arithmetic_bounds (skiatest::Reporter *reporter, float k1, float k2, float k3, float k4, sk_sp< SkImageFilter > background, sk_sp< SkImageFilter > foreground, const SkIRect *crop, const SkIRect &expected)
static void	test_arithmetic_combinations (skiatest::Reporter *reporter, float v)
	DEF_TEST (ArithmeticImageFilterBounds, reporter)
	DEF_TEST (DisplacementMapBounds, reporter)
	DEF_TEST (ImageSourceBounds, reporter)
	DEF_TEST (PictureImageSourceBounds, reporter)
	DEF_TEST (DropShadowImageFilter_Huge, reporter)

Variables
static const int	kBitmapSize = 4

Function Documentation

create_empty_device()

static sk_sp< SkDevice > create_empty_device ( GrRecordingContext *  rContext, int  widthHeight  )

static

Definition at line 376 of file ImageFilterTest.cpp.

                                                                                          {
 
    const SkImageInfo ii = SkImageInfo::Make({ widthHeight, widthHeight },
                                             kRGBA_8888_SkColorType,
                                             kPremul_SkAlphaType);
 
    if (rContext) {
        return rContext->priv().createDevice(skgpu::Budgeted::kNo, ii, SkBackingFit::kApprox, 1,
                                             skgpu::Mipmapped::kNo, skgpu::Protected::kNo,
                                             kTestSurfaceOrigin, {},
                                             skgpu::ganesh::Device::InitContents::kUninit);
    } else {
        SkBitmap bm;
        SkAssertResult(bm.tryAllocPixels(ii));
        return sk_make_sp<SkBitmapDevice>(bm, SkSurfaceProps());
    }
}

create_empty_special_image()

static sk_sp< SkSpecialImage > create_empty_special_image ( GrRecordingContext *  rContext, int  widthHeight, SkColor4f  color = SkColors::kTransparent  )

static

Definition at line 394 of file ImageFilterTest.cpp.

                                                                                                {
    sk_sp<SkDevice> device = create_empty_device(rContext, widthHeight);
 
    SkASSERT(device);
 
    SkPaint p;
    p.setColor4f(color, /*colorSpace=*/nullptr);
    p.setBlendMode(SkBlendMode::kSrc);
    device->drawPaint(p);
    return device->snapSpecial(SkIRect::MakeWH(widthHeight, widthHeight));
}

DEF_GANESH_TEST_FOR_ALL_CONTEXTS()

DEF_GANESH_TEST_FOR_ALL_CONTEXTS	(	ImageFilterBlurLargeImage_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1957 of file ImageFilterTest.cpp.

                                                       {
    auto surface(SkSurfaces::RenderTarget(
            ctxInfo.directContext(),
            skgpu::Budgeted::kYes,
            SkImageInfo::Make(100, 100, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
    test_large_blur_input(reporter, surface->getCanvas());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [1/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ComposedImageFilterBounds_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1620 of file ImageFilterTest.cpp.

                                                             {
    test_composed_imagefilter_bounds(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [2/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ComposedImageFilterOffset_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1575 of file ImageFilterTest.cpp.

                                                             {
    test_composed_imagefilter_offset(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [3/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterClippedPictureImageFilter_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1336 of file ImageFilterTest.cpp.

                                                             {
    test_clipped_picture_imagefilter(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [4/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterCropRect_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1271 of file ImageFilterTest.cpp.

                                                             {
    test_cropRects(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [5/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterFailAffectsTransparentBlack_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 776 of file ImageFilterTest.cpp.

                                                             {
    test_fail_affects_transparent_black(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [6/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterHugeBlur_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1933 of file ImageFilterTest.cpp.

                                                             {
    sk_sp<SkSurface> surf(SkSurfaces::RenderTarget(
            ctxInfo.directContext(), skgpu::Budgeted::kNo, SkImageInfo::MakeN32Premul(100, 100)));
 
    SkCanvas* canvas = surf->getCanvas();
 
    test_huge_blur(canvas, reporter);
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [7/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterMakeWithFilter_Ganesh	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1869 of file ImageFilterTest.cpp.

                                                             {
    GrRecordingContext* rContext = ctxInfo.directContext();
 
    auto createGaneshSurface = [rContext](int width, int height) -> sk_sp<SkSurface> {
        const SkImageInfo info = SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType);
        return SkSurfaces::RenderTarget(
                rContext, skgpu::Budgeted::kNo, info, 0, kTestSurfaceOrigin, nullptr);
    };
 
    auto ganesh = [rContext](sk_sp<SkImage> src,
                             const SkImageFilter* filter,
                             const SkIRect& subset,
                             const SkIRect& clipBounds,
                             SkIRect* outSubset,
                             SkIPoint* offset) -> sk_sp<SkImage> {
         return SkImages::MakeWithFilter(rContext,
                                         std::move(src),
                                         filter,
                                         subset,
                                         clipBounds,
                                         outSubset,
                                         offset);
    };
 
    test_make_with_filter(reporter, createGaneshSurface, ganesh);
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [8/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterMatrixConvolutionBigKernel_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1260 of file ImageFilterTest.cpp.

                                                             {
    test_big_kernel(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [9/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterMergeResultSize_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1100 of file ImageFilterTest.cpp.

                                                             {
    test_imagefilter_merge_result_size(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [10/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterNegativeBlurSigma_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 610 of file ImageFilterTest.cpp.

                                                             {
    test_negative_blur_sigma(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [11/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	ImageFilterZeroBlurSigma_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 742 of file ImageFilterTest.cpp.

                                                             {
    test_zero_blur_sigma(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [12/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	MorphologyFilterRadiusWithMirrorCTM_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 699 of file ImageFilterTest.cpp.

                                                             {
    test_morphology_radius_with_mirror_ctm(reporter, ctxInfo.directContext());
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [13/13]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	XfermodeImageFilterCroppedInput_Gpu	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kNever
	)

Definition at line 1945 of file ImageFilterTest.cpp.

                                                             {
    sk_sp<SkSurface> surf(SkSurfaces::RenderTarget(
            ctxInfo.directContext(),
            skgpu::Budgeted::kNo,
            SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
 
    test_xfermode_cropped_input(surf.get(), reporter);
}

DEF_TEST() [1/42]

DEF_TEST	(	ArithmeticImageFilterBounds	,
		reporter
	)

Definition at line 2174 of file ImageFilterTest.cpp.

                                                {
    test_arithmetic_combinations(reporter, 1);
    test_arithmetic_combinations(reporter, 0.5);
}

DEF_TEST() [2/42]

DEF_TEST	(	ComposedImageFilterBounds	,
		reporter
	)

Definition at line 1616 of file ImageFilterTest.cpp.

                                              {
    test_composed_imagefilter_bounds(reporter, nullptr);
}

DEF_TEST() [3/42]

DEF_TEST	(	ComposedImageFilterOffset	,
		reporter
	)

Definition at line 1571 of file ImageFilterTest.cpp.

                                              {
    test_composed_imagefilter_offset(reporter, nullptr);
}

DEF_TEST() [4/42]

DEF_TEST	(	DisplacementMapBounds	,
		reporter
	)

Definition at line 2180 of file ImageFilterTest.cpp.

                                          {
    SkIRect floodBounds(SkIRect::MakeXYWH(20, 30, 10, 10));
    sk_sp<SkImageFilter> flood(SkImageFilters::Shader(SkShaders::Color(SK_ColorGREEN),
                                                      &floodBounds));
    SkIRect tilingBounds(SkIRect::MakeXYWH(0, 0, 200, 100));
    sk_sp<SkImageFilter> tiling(SkImageFilters::Tile(SkRect::Make(floodBounds),
                                                     SkRect::Make(tilingBounds),
                                                     flood));
    sk_sp<SkImageFilter> displace(SkImageFilters::DisplacementMap(SkColorChannel::kR,
                                                                  SkColorChannel::kB,
                                                                  20.0f, nullptr, tiling));
 
    // The filter graph rooted at 'displace' uses the dynamic source image for the displacement
    // component of ::DisplacementMap, modifying the color component produced by the ::Tile. The
    // output of the tiling filter will be 'tilingBounds', regardless of its input, so 'floodBounds'
    // has no effect on the output. Since 'tiling' doesn't reference any dynamic source image, it
    // also will not affect the required input bounds. The displacement map is sampled 1-to-1
    // with the output pixels, and covers the output unless the color's output makes that impossible
    // and the output is a subset of the desired output. Thus, the displacement can impact the
    // reported output bounds.
    SkIRect input(SkIRect::MakeXYWH(20, 30, 40, 50));
 
    // 'input' is the desired output, which directly constrains the displacement component in this
    // specific filter graph.
    SkIRect actualInput = displace->filterBounds(input, SkMatrix::I(),
                                                 SkImageFilter::kReverse_MapDirection);
    REPORTER_ASSERT(reporter, input == actualInput);
 
    // 'input' is the content bounds, which don't affect output bounds because it's only referenced
    // by the displacement component and not the color component.
    SkIRect actualOutput = displace->filterBounds(input, SkMatrix::I(),
                                                  SkImageFilter::kForward_MapDirection);
    REPORTER_ASSERT(reporter, tilingBounds.makeOutset(10, 10) == actualOutput);
}

DEF_TEST() [5/42]

DEF_TEST	(	DropShadowImageFilter_Huge	,
		reporter
	)

Definition at line 2319 of file ImageFilterTest.cpp.

                                               {
    // Successful if it doesn't crash or trigger ASAN. (crbug.com/1264705)
    auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(300, 150));
 
    SkPaint paint;
    paint.setImageFilter(SkImageFilters::DropShadowOnly(
            0.0f, 0.437009f, 14129.6f, 14129.6f, SK_ColorGRAY, nullptr));
 
    surf->getCanvas()->saveLayer(nullptr, &paint);
    surf->getCanvas()->restore();
}

DEF_TEST() [6/42]

DEF_TEST	(	HugeBlurImageFilter	,
		reporter
	)

Definition at line 1405 of file ImageFilterTest.cpp.

                                        {
    SkBitmap temp;
    temp.allocN32Pixels(100, 100);
    SkCanvas canvas(temp);
    test_huge_blur(&canvas, reporter);
}

DEF_TEST() [7/42]

DEF_TEST	(	ImageFilter	,
		reporter
	)

Definition at line 409 of file ImageFilterTest.cpp.

                                {
    {
        // Check that a color matrix filter followed by a color matrix filter
        // concatenates into a single filter.
        sk_sp<SkImageFilter> doubleBrightness(make_scale(2.0f, nullptr));
        sk_sp<SkImageFilter> halfBrightness(make_scale(0.5f, std::move(doubleBrightness)));
        REPORTER_ASSERT(reporter, nullptr == halfBrightness->getInput(0));
        SkColorFilter* cf;
        REPORTER_ASSERT(reporter, halfBrightness->asColorFilter(&cf));
        cf->unref();
    }
 
    {
        // Check that a color filter image filter without a crop rect can be
        // expressed as a color filter.
        sk_sp<SkImageFilter> gray(make_grayscale(nullptr, nullptr));
        REPORTER_ASSERT(reporter, true == gray->asColorFilter(nullptr));
    }
 
    {
        // Check that a colorfilterimage filter without a crop rect but with an input
        // that is another colorfilterimage can be expressed as a colorfilter (composed).
        sk_sp<SkImageFilter> mode(make_blue(nullptr, nullptr));
        sk_sp<SkImageFilter> gray(make_grayscale(std::move(mode), nullptr));
        REPORTER_ASSERT(reporter, true == gray->asColorFilter(nullptr));
    }
 
    {
        // Test that if we exceed the limit of what ComposeColorFilter can combine, we still
        // can build the DAG and won't assert if we call asColorFilter.
        sk_sp<SkImageFilter> filter(make_blue(nullptr, nullptr));
        const int kWayTooManyForComposeColorFilter = 100;
        for (int i = 0; i < kWayTooManyForComposeColorFilter; ++i) {
            filter = make_blue(filter, nullptr);
            // the first few of these will succeed, but after we hit the internal limit,
            // it will then return false.
            (void)filter->asColorFilter(nullptr);
        }
    }
 
    {
        // Check that a color filter image filter with a crop rect cannot
        // be expressed as a color filter.
        SkIRect cropRect = SkIRect::MakeWH(100, 100);
        sk_sp<SkImageFilter> grayWithCrop(make_grayscale(nullptr, &cropRect));
        REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(nullptr));
    }
 
    {
        // Check that two non-commutative matrices are concatenated in
        // the correct order.
        float blueToRedMatrix[20] = { 0 };
        blueToRedMatrix[2] = blueToRedMatrix[18] = 1;
        float redToGreenMatrix[20] = { 0 };
        redToGreenMatrix[5] = redToGreenMatrix[18] = 1;
        sk_sp<SkColorFilter> blueToRed(SkColorFilters::Matrix(blueToRedMatrix));
        sk_sp<SkImageFilter> filter1(SkImageFilters::ColorFilter(std::move(blueToRed), nullptr));
        sk_sp<SkColorFilter> redToGreen(SkColorFilters::Matrix(redToGreenMatrix));
        sk_sp<SkImageFilter> filter2(SkImageFilters::ColorFilter(std::move(redToGreen),
                                                                 std::move(filter1)));
 
        SkBitmap result;
        result.allocN32Pixels(kBitmapSize, kBitmapSize);
 
        SkPaint paint;
        paint.setColor(SK_ColorBLUE);
        paint.setImageFilter(std::move(filter2));
        SkCanvas canvas(result);
        canvas.clear(0x0);
        SkRect rect = SkRect::Make(SkIRect::MakeWH(kBitmapSize, kBitmapSize));
        canvas.drawRect(rect, paint);
        uint32_t pixel = *result.getAddr32(0, 0);
        // The result here should be green, since we have effectively shifted blue to green.
        REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
    }
 
    {
        // Tests pass by not asserting
        sk_sp<SkImage> image(make_small_image());
        SkBitmap result;
        result.allocN32Pixels(kBitmapSize, kBitmapSize);
 
        {
            // This tests for :
            // 1 ) location at (0,0,1)
            SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
            // 2 ) location and target at same value
            SkPoint3 target = SkPoint3::Make(location.fX, location.fY, location.fZ);
            // 3 ) large negative specular exponent value
            SkScalar specularExponent = -1000;
 
            sk_sp<SkImageFilter> bmSrc(SkImageFilters::Image(std::move(image), {}));
            SkPaint paint;
            paint.setImageFilter(SkImageFilters::SpotLitSpecular(
                    location, target, specularExponent, 180,
                    0xFFFFFFFF, SK_Scalar1, SK_Scalar1, SK_Scalar1,
                    std::move(bmSrc)));
            SkCanvas canvas(result);
            SkRect r = SkRect::MakeIWH(kBitmapSize, kBitmapSize);
            canvas.drawRect(r, paint);
        }
    }
}

DEF_TEST() [8/42]

DEF_TEST	(	ImageFilterBlurLargeImage	,
		reporter
	)

Definition at line 1767 of file ImageFilterTest.cpp.

                                              {
    auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(100, 100)));
    test_large_blur_input(reporter, surface->getCanvas());
}

DEF_TEST() [9/42]

DEF_TEST	(	ImageFilterBlurThenShadowBounds	,
		reporter
	)

Definition at line 921 of file ImageFilterTest.cpp.

                                                    {
    sk_sp<SkImageFilter> filter1(make_blur(nullptr));
    sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
 
    static const SkIRect kContentBounds = SkIRect::MakeXYWH(0, 0, 100, 100);
 
    // For output, the [0,0,100,100] source is expanded to [-3,-3,103,103] by the initial blur.
    // The drop shadow is translated by [100,100] and further outset by 30px -> [67,67,233,233],
    // The blend unions the inner blur result with the drop shadow to get [-3,-3,233,233].
    static const SkIRect kExpectedOutputBounds = SkIRect::MakeLTRB(-3, -3, 233, 233);
    SkIRect outputBounds = filter2->filterBounds(kContentBounds,
                                                 SkMatrix::I(),
                                                 SkImageFilter::kForward_MapDirection);
    REPORTER_ASSERT(reporter, outputBounds == kExpectedOutputBounds);
 
    // For input, it should be able to restrict itself to the source content.
    SkIRect inputBounds = filter2->filterBounds(kExpectedOutputBounds,
                                                SkMatrix::I(),
                                                SkImageFilter::kReverse_MapDirection,
                                                &kContentBounds);
 
    REPORTER_ASSERT(reporter, inputBounds == kContentBounds);
}

DEF_TEST() [10/42]

DEF_TEST	(	ImageFilterCanComputeFastBounds	,
		reporter
	)

Definition at line 1627 of file ImageFilterTest.cpp.

                                                    {
 
    {
        SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
        sk_sp<SkImageFilter> lighting(SkImageFilters::PointLitDiffuse(
                location,  SK_ColorGREEN, 0, 0, nullptr));
        REPORTER_ASSERT(reporter, !lighting->canComputeFastBounds());
    }
 
    {
        sk_sp<SkImageFilter> gray(make_grayscale(nullptr, nullptr));
        REPORTER_ASSERT(reporter, gray->canComputeFastBounds());
        {
            SkColorFilter* grayCF;
            REPORTER_ASSERT(reporter, gray->asAColorFilter(&grayCF));
            REPORTER_ASSERT(reporter, !as_CFB(grayCF)->affectsTransparentBlack());
            grayCF->unref();
        }
        REPORTER_ASSERT(reporter, gray->canComputeFastBounds());
 
        sk_sp<SkImageFilter> grayBlur(SkImageFilters::Blur(
                SK_Scalar1, SK_Scalar1, std::move(gray)));
        REPORTER_ASSERT(reporter, grayBlur->canComputeFastBounds());
    }
 
    {
        float greenMatrix[20] = { 0, 0, 0, 0, 0,
                                  0, 0, 0, 0, 1.0f/255,
                                  0, 0, 0, 0, 0,
                                  0, 0, 0, 0, 1.0f/255
        };
        sk_sp<SkColorFilter> greenCF(SkColorFilters::Matrix(greenMatrix));
        sk_sp<SkImageFilter> green(SkImageFilters::ColorFilter(greenCF, nullptr));
 
        REPORTER_ASSERT(reporter, as_CFB(greenCF)->affectsTransparentBlack());
        REPORTER_ASSERT(reporter, !green->canComputeFastBounds());
 
        sk_sp<SkImageFilter> greenBlur(SkImageFilters::Blur(SK_Scalar1, SK_Scalar1,
                                                               std::move(green)));
        REPORTER_ASSERT(reporter, !greenBlur->canComputeFastBounds());
    }
 
    uint8_t allOne[256], identity[256];
    for (int i = 0; i < 256; ++i) {
        identity[i] = i;
        allOne[i] = 255;
    }
 
    sk_sp<SkColorFilter> identityCF(SkColorFilters::TableARGB(identity, identity,
                                                              identity, allOne));
    sk_sp<SkImageFilter> identityFilter(SkImageFilters::ColorFilter(identityCF, nullptr));
    REPORTER_ASSERT(reporter, !as_CFB(identityCF)->affectsTransparentBlack());
    REPORTER_ASSERT(reporter, identityFilter->canComputeFastBounds());
 
    sk_sp<SkColorFilter> forceOpaqueCF(SkColorFilters::TableARGB(allOne, identity,
                                                                 identity, identity));
    sk_sp<SkImageFilter> forceOpaque(SkImageFilters::ColorFilter(forceOpaqueCF, nullptr));
    REPORTER_ASSERT(reporter, as_CFB(forceOpaqueCF)->affectsTransparentBlack());
    REPORTER_ASSERT(reporter, !forceOpaque->canComputeFastBounds());
}

DEF_TEST() [11/42]

DEF_TEST	(	ImageFilterClippedPictureImageFilter	,
		reporter
	)

Definition at line 1332 of file ImageFilterTest.cpp.

                                                         {
    test_clipped_picture_imagefilter(reporter, nullptr);
}

DEF_TEST() [12/42]

DEF_TEST	(	ImageFilterComplexCTM	,
		reporter
	)

Definition at line 1972 of file ImageFilterTest.cpp.

                                          {
    // just need a colorfilter to exercise the corresponding imagefilter
    sk_sp<SkColorFilter> cf = SkColorFilters::Blend(SK_ColorRED, SkBlendMode::kSrcATop);
    sk_sp<SkImageFilter> cfif = SkImageFilters::ColorFilter(cf, nullptr);    // can handle
    sk_sp<SkImageFilter> blif = SkImageFilters::Blur(3, 3, nullptr);         // cannot handle
    using MatrixCapability = SkImageFilter_Base::MatrixCapability;
 
    struct {
        sk_sp<SkImageFilter> fFilter;
        MatrixCapability     fExpectCapability;
    } recs[] = {
        { cfif,                                  MatrixCapability::kComplex },
        { SkImageFilters::ColorFilter(cf, cfif), MatrixCapability::kComplex },
        { SkImageFilters::Merge(cfif, cfif),     MatrixCapability::kComplex },
        { SkImageFilters::Compose(cfif, cfif),   MatrixCapability::kComplex },
 
        { blif,                                  MatrixCapability::kScaleTranslate },
        { SkImageFilters::Blur(3, 3, cfif),      MatrixCapability::kScaleTranslate },
        { SkImageFilters::ColorFilter(cf, blif), MatrixCapability::kScaleTranslate },
        { SkImageFilters::Merge(cfif, blif),     MatrixCapability::kScaleTranslate },
        { SkImageFilters::Compose(blif, cfif),   MatrixCapability::kScaleTranslate },
    };
 
    for (const auto& rec : recs) {
        const MatrixCapability capability = as_IFB(rec.fFilter)->getCTMCapability();
        REPORTER_ASSERT(reporter, capability == rec.fExpectCapability);
    }
}

DEF_TEST() [13/42]

DEF_TEST	(	ImageFilterComposedBlurFastBounds	,
		reporter
	)

Definition at line 1042 of file ImageFilterTest.cpp.

                                                      {
    sk_sp<SkImageFilter> filter1(make_blur(nullptr));
    sk_sp<SkImageFilter> filter2(make_blur(nullptr));
    sk_sp<SkImageFilter> composedFilter(SkImageFilters::Compose(std::move(filter1),
                                                                std::move(filter2)));
 
    static const SkRect kBoundsSrc = SkRect::MakeIWH(100, 100);
    static const SkRect kExpectedBounds = SkRect::MakeXYWH(-6, -6, 112, 112);
    SkRect boundsDst = composedFilter->computeFastBounds(kBoundsSrc);
 
    REPORTER_ASSERT(reporter, boundsDst == kExpectedBounds);
}

DEF_TEST() [14/42]

DEF_TEST	(	ImageFilterCropRect	,
		reporter
	)

Definition at line 1267 of file ImageFilterTest.cpp.

                                        {
    test_cropRects(reporter, nullptr);
}

DEF_TEST() [15/42]

DEF_TEST	(	ImageFilterDilateThenBlurBounds	,
		reporter
	)

Definition at line 967 of file ImageFilterTest.cpp.

                                                    {
    sk_sp<SkImageFilter> filter1(SkImageFilters::Dilate(2, 2, nullptr));
    sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
 
    static const SkIRect kContentBounds = SkIRect::MakeXYWH(0, 0, 100, 100);
    // For output, the [0,0,100,100] source is outset by dilate radius (2px) to [-2,-2,102,102].
    // This is then translated by 100px and outset by 30px for the drop shadow = [68,68,232,232].
    // Finally this is joined with the original dilate result to get [-2,-2,232,232].
    static const SkIRect kExpectedOutputBounds = SkIRect::MakeLTRB(-2, -2, 232, 232);
    SkIRect outputBounds = filter2->filterBounds(kContentBounds,
                                                 SkMatrix::I(),
                                                 SkImageFilter::kForward_MapDirection);
    REPORTER_ASSERT(reporter, outputBounds == kExpectedOutputBounds);
 
    // For input, it should be able to restrict itself to the source content.
    SkIRect inputBounds = filter2->filterBounds(kExpectedOutputBounds,
                                                SkMatrix::I(),
                                                SkImageFilter::kReverse_MapDirection,
                                                &kContentBounds);
    REPORTER_ASSERT(reporter, inputBounds == kContentBounds);
}

DEF_TEST() [16/42]

DEF_TEST	(	ImageFilterDrawMatrixBBH	,
		reporter
	)

Definition at line 891 of file ImageFilterTest.cpp.

                                             {
    // Check that matrix filter when drawn tiled with BBH exactly
    // matches the same thing drawn without BBH.
    // Tests pass by not asserting.
 
    const int width = 200, height = 200;
    const int tileSize = 100;
    SkBitmap result1, result2;
    SkRTreeFactory factory;
 
    draw_saveLayer_picture(width, height, tileSize, &factory, &result1);
    draw_saveLayer_picture(width, height, tileSize, nullptr, &result2);
 
    for (int y = 0; y < height; y++) {
        int diffs = memcmp(result1.getAddr32(0, y), result2.getAddr32(0, y), result1.rowBytes());
        REPORTER_ASSERT(reporter, !diffs);
        if (diffs) {
            break;
        }
    }
}

DEF_TEST() [17/42]

DEF_TEST	(	ImageFilterDrawTiled	,
		reporter
	)

Definition at line 783 of file ImageFilterTest.cpp.

                                         {
    // Check that all filters when drawn tiled (with subsequent clip rects) exactly
    // match the same filters drawn with a single full-canvas bitmap draw.
    // Tests pass by not asserting.
 
    FilterList filters(nullptr);
 
    SkBitmap untiledResult, tiledResult;
    const int width = 64, height = 64;
    untiledResult.allocN32Pixels(width, height);
    tiledResult.allocN32Pixels(width, height);
    SkCanvas tiledCanvas(tiledResult);
    SkCanvas untiledCanvas(untiledResult);
    const int tileSize = 8;
 
    SkPaint textPaint;
    textPaint.setColor(SK_ColorWHITE);
    SkFont font(ToolUtils::DefaultPortableTypeface(), height);
 
    const char* text = "ABC";
    const SkScalar yPos = SkIntToScalar(height);
 
    for (int scale = 1; scale <= 2; ++scale) {
        for (int i = 0; i < filters.count(); ++i) {
            SkPaint combinedPaint;
            combinedPaint.setColor(SK_ColorWHITE);
            combinedPaint.setImageFilter(sk_ref_sp(filters.getFilter(i)));
 
            untiledCanvas.clear(SK_ColorTRANSPARENT);
            untiledCanvas.save();
            untiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
            untiledCanvas.drawString(text, 0, yPos, font, combinedPaint);
            untiledCanvas.restore();
 
            tiledCanvas.clear(SK_ColorTRANSPARENT);
            for (int y = 0; y < height; y += tileSize) {
                for (int x = 0; x < width; x += tileSize) {
                    tiledCanvas.save();
                    const SkRect clipRect = SkRect::MakeXYWH(x, y, tileSize, tileSize);
                    tiledCanvas.clipRect(clipRect);
                    if (filters.needsSaveLayer(i)) {
                        tiledCanvas.saveLayer(nullptr, &combinedPaint);
                            tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
                            tiledCanvas.drawString(text, 0, yPos, font, textPaint);
                        tiledCanvas.restore();
                    } else {
                        tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
                        tiledCanvas.drawString(text, 0, yPos, font, combinedPaint);
                    }
 
                    tiledCanvas.restore();
                }
            }
 
            if (!ToolUtils::equal_pixels(untiledResult, tiledResult)) {
                SkString encoded;
                SkString errString("Tiled image filter doesn't match untiled reference");
                errString.append("\nExpected: ");
                if (ToolUtils::BitmapToBase64DataURI(untiledResult, &encoded)) {
                    errString.append(encoded);
                } else {
                    errString.append("failed to encode");
                }
 
                errString.append("\nActual: ");
                if (ToolUtils::BitmapToBase64DataURI(tiledResult, &encoded)) {
                    errString.append(encoded);
                } else {
                    errString.append("failed to encode");
                }
 
                ERRORF(reporter, "%s\n%s", filters.getName(i), errString.c_str());
            }
        }
    }
}

DEF_TEST() [18/42]

DEF_TEST	(	ImageFilterDrawTiledBlurRTree	,
		reporter
	)

Definition at line 1125 of file ImageFilterTest.cpp.

                                                  {
    // Check that the blur filter when recorded with RTree acceleration,
    // and drawn tiled (with subsequent clip rects) exactly
    // matches the same filter drawn with without RTree acceleration.
    // This tests that the "bleed" from the blur into the otherwise-blank
    // tiles is correctly rendered.
    // Tests pass by not asserting.
 
    int width = 16, height = 8;
    SkBitmap result1, result2;
    result1.allocN32Pixels(width, height);
    result2.allocN32Pixels(width, height);
    SkCanvas canvas1(result1);
    SkCanvas canvas2(result2);
    int tileSize = 8;
 
    canvas1.clear(0);
    canvas2.clear(0);
 
    SkRTreeFactory factory;
 
    SkPictureRecorder recorder1, recorder2;
    // The only difference between these two pictures is that one has RTree aceleration.
    SkCanvas* recordingCanvas1 = recorder1.beginRecording(width, height);
    SkCanvas* recordingCanvas2 = recorder2.beginRecording(width, height, &factory);
 
    draw_blurred_rect(recordingCanvas1);
    draw_blurred_rect(recordingCanvas2);
    sk_sp<SkPicture> picture1(recorder1.finishRecordingAsPicture());
    sk_sp<SkPicture> picture2(recorder2.finishRecordingAsPicture());
    for (int y = 0; y < height; y += tileSize) {
        for (int x = 0; x < width; x += tileSize) {
            SkRect tileRect = SkRect::Make(SkIRect::MakeXYWH(x, y, tileSize, tileSize));
            draw_picture_clipped(&canvas1, tileRect, picture1.get());
            draw_picture_clipped(&canvas2, tileRect, picture2.get());
        }
    }
    for (int y = 0; y < height; y++) {
        int diffs = memcmp(result1.getAddr32(0, y), result2.getAddr32(0, y), result1.rowBytes());
        REPORTER_ASSERT(reporter, !diffs);
        if (diffs) {
            break;
        }
    }
}

DEF_TEST() [19/42]

DEF_TEST	(	ImageFilterEmptySaveLayer	,
		reporter
	)

Definition at line 1343 of file ImageFilterTest.cpp.

                                              {
    // Even when there's an empty saveLayer()/restore(), ensure that an image
    // filter or color filter which affects transparent black still draws.
 
    SkBitmap bitmap;
    bitmap.allocN32Pixels(10, 10);
    SkCanvas canvas(bitmap);
 
    SkRTreeFactory factory;
    SkPictureRecorder recorder;
 
    sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrc));
    sk_sp<SkImageFilter> imageFilter(SkImageFilters::ColorFilter(green, nullptr));
    SkPaint imageFilterPaint;
    imageFilterPaint.setImageFilter(std::move(imageFilter));
    SkPaint colorFilterPaint;
    colorFilterPaint.setColorFilter(green);
 
    SkRect bounds = SkRect::MakeIWH(10, 10);
 
    SkCanvas* recordingCanvas = recorder.beginRecording(10, 10, &factory);
    recordingCanvas->saveLayer(&bounds, &imageFilterPaint);
    recordingCanvas->restore();
    sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
 
    canvas.clear(0);
    canvas.drawPicture(picture);
    uint32_t pixel = *bitmap.getAddr32(0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    recordingCanvas = recorder.beginRecording(10, 10, &factory);
    recordingCanvas->saveLayer(nullptr, &imageFilterPaint);
    recordingCanvas->restore();
    sk_sp<SkPicture> picture2(recorder.finishRecordingAsPicture());
 
    canvas.clear(0);
    canvas.drawPicture(picture2);
    pixel = *bitmap.getAddr32(0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    recordingCanvas = recorder.beginRecording(10, 10, &factory);
    recordingCanvas->saveLayer(&bounds, &colorFilterPaint);
    recordingCanvas->restore();
    sk_sp<SkPicture> picture3(recorder.finishRecordingAsPicture());
 
    canvas.clear(0);
    canvas.drawPicture(picture3);
    pixel = *bitmap.getAddr32(0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}

DEF_TEST() [20/42]

DEF_TEST	(	ImageFilterFailAffectsTransparentBlack	,
		reporter
	)

Definition at line 772 of file ImageFilterTest.cpp.

                                                           {
    test_fail_affects_transparent_black(reporter, nullptr);
}

DEF_TEST() [21/42]

DEF_TEST	(	ImageFilterImageSourceSerialization	,
		reporter
	)

Definition at line 1689 of file ImageFilterTest.cpp.

                                                        {
    auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(10, 10)));
    surface->getCanvas()->clear(SK_ColorGREEN);
    sk_sp<SkImage> image(surface->makeImageSnapshot());
    sk_sp<SkImageFilter> filter(SkImageFilters::Image(std::move(image), SkFilterMode::kNearest));
 
    SkSerialProcs sProcs;
    sProcs.fImageProc = [](SkImage* img, void*) -> sk_sp<SkData> {
        return SkPngEncoder::Encode(as_IB(img)->directContext(), img, SkPngEncoder::Options{});
    };
    sk_sp<SkData> data(filter->serialize(&sProcs));
    sk_sp<SkImageFilter> unflattenedFilter = SkImageFilter::Deserialize(data->data(), data->size());
    REPORTER_ASSERT(reporter, unflattenedFilter);
 
    SkBitmap bm;
    bm.allocN32Pixels(10, 10);
    bm.eraseColor(SK_ColorBLUE);
    SkPaint paint;
    paint.setColor(SK_ColorRED);
    paint.setImageFilter(unflattenedFilter);
 
    SkCanvas canvas(bm);
    canvas.drawRect(SkRect::MakeIWH(10, 10), paint);
    REPORTER_ASSERT(reporter, *bm.getAddr32(0, 0) == SkPreMultiplyColor(SK_ColorGREEN));
}

DEF_TEST() [22/42]

DEF_TEST	(	ImageFilterImageSourceUninitialized	,
		r
	)

Definition at line 1715 of file ImageFilterTest.cpp.

                                                 {
    sk_sp<SkData> data(GetResourceAsData("crbug769134.fil"));
    if (!data) {
        return;
    }
    sk_sp<SkImageFilter> unflattenedFilter = SkImageFilter::Deserialize(data->data(), data->size());
    // This will fail. More importantly, msan will verify that we did not
    // compare against uninitialized memory.
    REPORTER_ASSERT(r, !unflattenedFilter);
}

DEF_TEST() [23/42]

DEF_TEST	(	ImageFilterMakeWithFilter	,
		reporter
	)

Definition at line 1846 of file ImageFilterTest.cpp.

                                              {
    auto createRasterSurface = [](int width, int height) -> sk_sp<SkSurface> {
        const SkImageInfo info = SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType);
        return SkSurfaces::Raster(info);
    };
 
    auto raster = [](sk_sp<SkImage> src,
                     const SkImageFilter* filter,
                     const SkIRect& subset,
                     const SkIRect& clipBounds,
                     SkIRect* outSubset,
                     SkIPoint* offset) -> sk_sp<SkImage> {
                         return SkImages::MakeWithFilter(std::move(src),
                                                         filter,
                                                         subset,
                                                         clipBounds,
                                                         outSubset,
                                                         offset);
                     };
 
    test_make_with_filter(reporter, createRasterSurface, raster);
}

DEF_TEST() [24/42]

DEF_TEST	(	ImageFilterMatrix	,
		reporter
	)

Definition at line 1278 of file ImageFilterTest.cpp.

                                      {
    SkBitmap temp;
    temp.allocN32Pixels(100, 100);
    SkCanvas canvas(temp);
    canvas.scale(SkIntToScalar(2), SkIntToScalar(2));
 
    SkMatrix expectedMatrix = canvas.getTotalMatrix();
 
    SkRTreeFactory factory;
    SkPictureRecorder recorder;
    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100, &factory);
 
    SkPaint paint;
    paint.setImageFilter(sk_sp<SkImageFilter>(new MatrixTestImageFilter(reporter, expectedMatrix)));
    recordingCanvas->saveLayer(nullptr, &paint);
    SkPaint solidPaint;
    solidPaint.setColor(0xFFFFFFFF);
    recordingCanvas->save();
    recordingCanvas->scale(SkIntToScalar(10), SkIntToScalar(10));
    recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(100, 100)), solidPaint);
    recordingCanvas->restore(); // scale
    recordingCanvas->restore(); // saveLayer
 
    canvas.drawPicture(recorder.finishRecordingAsPicture());
}

DEF_TEST() [25/42]

DEF_TEST	(	ImageFilterMatrixConvolution	,
		reporter
	)

Definition at line 1171 of file ImageFilterTest.cpp.

                                                 {
    // Check that a 1x3 filter does not cause a spurious assert.
    SkScalar kernel[3] = {
        SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
    };
    SkISize kernelSize = SkISize::Make(1, 3);
    SkScalar gain = SK_Scalar1, bias = 0;
    SkIPoint kernelOffset = SkIPoint::Make(0, 0);
 
    sk_sp<SkImageFilter> filter(SkImageFilters::MatrixConvolution(
            kernelSize, kernel, gain, bias, kernelOffset, SkTileMode::kRepeat, false, nullptr));
 
    SkBitmap result;
    int width = 16, height = 16;
    result.allocN32Pixels(width, height);
    SkCanvas canvas(result);
    canvas.clear(0);
 
    SkPaint paint;
    paint.setImageFilter(std::move(filter));
    SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
    canvas.drawRect(rect, paint);
}

DEF_TEST() [26/42]

DEF_TEST	(	ImageFilterMatrixConvolutionBigKernel	,
		reporter
	)

Definition at line 1256 of file ImageFilterTest.cpp.

                                                          {
    test_big_kernel(reporter, nullptr);
}

DEF_TEST() [27/42]

DEF_TEST	(	ImageFilterMatrixConvolutionBorder	,
		reporter
	)

Definition at line 1195 of file ImageFilterTest.cpp.

                                                       {
    // Check that a filter with borders outside the target bounds
    // does not crash.
    SkScalar kernel[3] = {
        0, 0, 0,
    };
    SkISize kernelSize = SkISize::Make(3, 1);
    SkScalar gain = SK_Scalar1, bias = 0;
    SkIPoint kernelOffset = SkIPoint::Make(2, 0);
 
    sk_sp<SkImageFilter> filter(SkImageFilters::MatrixConvolution(
            kernelSize, kernel, gain, bias, kernelOffset, SkTileMode::kClamp, true, nullptr));
 
    SkBitmap result;
 
    int width = 10, height = 10;
    result.allocN32Pixels(width, height);
    SkCanvas canvas(result);
    canvas.clear(0);
 
    SkPaint filterPaint;
    filterPaint.setImageFilter(std::move(filter));
    SkRect bounds = SkRect::MakeIWH(1, 10);
    SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
    SkPaint rectPaint;
    canvas.saveLayer(&bounds, &filterPaint);
    canvas.drawRect(rect, rectPaint);
    canvas.restore();
}

DEF_TEST() [28/42]

DEF_TEST	(	ImageFilterMatrixConvolutionTest	,
		reporter
	)

Definition at line 1412 of file ImageFilterTest.cpp.

                                                     {
    SkScalar kernel[1] = { 0 };
    SkScalar gain = SK_Scalar1, bias = 0;
    SkIPoint kernelOffset = SkIPoint::Make(1, 1);
 
    // Check that an enormous (non-allocatable) kernel gives a nullptr filter.
    sk_sp<SkImageFilter> conv(SkImageFilters::MatrixConvolution(
            SkISize::Make(1<<30, 1<<30), kernel, gain, bias, kernelOffset,
            SkTileMode::kRepeat, false, nullptr));
 
    REPORTER_ASSERT(reporter, nullptr == conv.get());
 
    // Check that a nullptr kernel gives a nullptr filter.
    conv = SkImageFilters::MatrixConvolution(
            SkISize::Make(1, 1), nullptr, gain, bias, kernelOffset,
            SkTileMode::kRepeat, false, nullptr);
 
    REPORTER_ASSERT(reporter, nullptr == conv.get());
 
    // Check that a kernel width < 1 gives a nullptr filter.
    conv = SkImageFilters::MatrixConvolution(
            SkISize::Make(0, 1), kernel, gain, bias, kernelOffset,
            SkTileMode::kRepeat, false, nullptr);
 
    REPORTER_ASSERT(reporter, nullptr == conv.get());
 
    // Check that kernel height < 1 gives a nullptr filter.
    conv = SkImageFilters::MatrixConvolution(
            SkISize::Make(1, -1), kernel, gain, bias, kernelOffset,
            SkTileMode::kRepeat, false, nullptr);
 
    REPORTER_ASSERT(reporter, nullptr == conv.get());
}

DEF_TEST() [29/42]

DEF_TEST	(	ImageFilterMergeResultSize	,
		reporter
	)

Definition at line 1096 of file ImageFilterTest.cpp.

                                               {
    test_imagefilter_merge_result_size(reporter, nullptr);
}

DEF_TEST() [30/42]

DEF_TEST	(	ImageFilterNegativeBlurSigma	,
		reporter
	)

Definition at line 606 of file ImageFilterTest.cpp.

                                                 {
    test_negative_blur_sigma(reporter, nullptr);
}

DEF_TEST() [31/42]

DEF_TEST	(	ImageFilterNestedSaveLayer	,
		reporter
	)

Definition at line 1497 of file ImageFilterTest.cpp.

                                               {
    SkBitmap temp;
    temp.allocN32Pixels(50, 50);
    SkCanvas canvas(temp);
    canvas.clear(0x0);
 
    SkBitmap bitmap;
    bitmap.allocN32Pixels(10, 10);
    bitmap.eraseColor(SK_ColorGREEN);
 
    SkMatrix matrix;
    matrix.setScale(SkIntToScalar(2), SkIntToScalar(2));
    matrix.postTranslate(SkIntToScalar(-20), SkIntToScalar(-20));
    sk_sp<SkImageFilter> matrixFilter(
        SkImageFilters::MatrixTransform(matrix, SkSamplingOptions(SkFilterMode::kLinear), nullptr));
 
    // Test that saveLayer() with a filter nested inside another saveLayer() applies the
    // correct offset to the filter matrix.
    SkRect bounds1 = SkRect::MakeXYWH(10, 10, 30, 30);
    canvas.saveLayer(&bounds1, nullptr);
    SkPaint filterPaint;
    filterPaint.setImageFilter(std::move(matrixFilter));
    SkRect bounds2 = SkRect::MakeXYWH(20, 20, 10, 10);
    canvas.saveLayer(&bounds2, &filterPaint);
    SkPaint greenPaint;
    greenPaint.setColor(SK_ColorGREEN);
    canvas.drawRect(bounds2, greenPaint);
    canvas.restore();
    canvas.restore();
    SkPaint strokePaint;
    strokePaint.setStyle(SkPaint::kStroke_Style);
    strokePaint.setColor(SK_ColorRED);
 
    SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
    uint32_t pixel;
    temp.readPixels(info, &pixel, 4, 25, 25);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    // Test that drawSprite() with a filter nested inside a saveLayer() applies the
    // correct offset to the filter matrix.
    canvas.clear(0x0);
    temp.readPixels(info, &pixel, 4, 25, 25);
    canvas.saveLayer(&bounds1, nullptr);
    canvas.drawImage(bitmap.asImage(), 20, 20, SkSamplingOptions(), &filterPaint); // drawSprite
    canvas.restore();
 
    temp.readPixels(info, &pixel, 4, 25, 25);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}

DEF_TEST() [32/42]

DEF_TEST	(	ImageFilterScaledBlurRadius	,
		reporter
	)

Definition at line 989 of file ImageFilterTest.cpp.

                                                {
    // Each blur should spread 3*sigma, so 3 for the blur and 30 for the shadow
    // (before the CTM). Bounds should be computed correctly in the presence of
    // a (possibly negative) scale.
    sk_sp<SkImageFilter> blur(make_blur(nullptr));
    sk_sp<SkImageFilter> dropShadow(make_drop_shadow(nullptr));
    {
        // Uniform scale by 2.
        SkMatrix scaleMatrix;
        scaleMatrix.setScale(2, 2);
        static const SkIRect kBounds = SkIRect::MakeLTRB(0, 0, 200, 200);
 
        static const SkIRect kExpectedBlurBounds = SkIRect::MakeLTRB(-6, -6, 206, 206);
        SkIRect blurBounds = blur->filterBounds(
                kBounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
        REPORTER_ASSERT(reporter, blurBounds == kExpectedBlurBounds);
        SkIRect reverseBlurBounds = blur->filterBounds(
                kExpectedBlurBounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &kBounds);
        REPORTER_ASSERT(reporter, reverseBlurBounds == kBounds);
 
        static const SkIRect kExpectedShadowBounds = SkIRect::MakeLTRB(0, 0, 460, 460);
        SkIRect shadowBounds = dropShadow->filterBounds(
                kBounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
        REPORTER_ASSERT(reporter, shadowBounds == kExpectedShadowBounds);
 
        SkIRect reverseShadowBounds = dropShadow->filterBounds(
                kExpectedShadowBounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &kBounds);
        REPORTER_ASSERT(reporter, reverseShadowBounds == kBounds);
    }
    {
        // Vertical flip.
        SkMatrix scaleMatrix;
        scaleMatrix.setScale(1, -1);
        static const SkIRect kBounds = SkIRect::MakeLTRB(0, -100, 100, 0);
 
        static const SkIRect kExpectedBlurBounds = SkIRect::MakeLTRB(-3, -103, 103, 3);
        SkIRect blurBounds = blur->filterBounds(
                kBounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
        REPORTER_ASSERT(reporter, blurBounds == kExpectedBlurBounds);
        SkIRect reverseBlurBounds = blur->filterBounds(
                kExpectedBlurBounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &kBounds);
        REPORTER_ASSERT(reporter, reverseBlurBounds == kBounds);
 
        SkIRect kExpectedShadowBounds = SkIRect::MakeLTRB(0, -230, 230, 0);
        SkIRect shadowBounds = dropShadow->filterBounds(
                kBounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
        REPORTER_ASSERT(reporter, shadowBounds == kExpectedShadowBounds);
        SkIRect reverseShadowBounds = dropShadow->filterBounds(
                kExpectedShadowBounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &kBounds);
        REPORTER_ASSERT(reporter, reverseShadowBounds == kBounds);
    }
}

DEF_TEST() [33/42]

DEF_TEST	(	ImageFilterShadowThenBlurBounds	,
		reporter
	)

Definition at line 945 of file ImageFilterTest.cpp.

                                                    {
    sk_sp<SkImageFilter> filter1(make_drop_shadow(nullptr));
    sk_sp<SkImageFilter> filter2(make_blur(std::move(filter1)));
 
    static const SkIRect kContentBounds = SkIRect::MakeXYWH(0, 0, 100, 100);
    // For output, the [0,0,100,100] source is translated by 100px and outset by 30px for the drop
    // shadow = [70,70,230,230], then blended back with its original to get [0,0,230,230]. This is
    // then outset by 3px for the outer blur to get [-3,-3,233,233].
    static const SkIRect kExpectedOutputBounds = SkIRect::MakeLTRB(-3, -3, 233, 233);
    SkIRect outputBounds = filter2->filterBounds(kContentBounds,
                                                 SkMatrix::I(),
                                                 SkImageFilter::kForward_MapDirection);
    REPORTER_ASSERT(reporter, outputBounds == kExpectedOutputBounds);
 
    // For input, it should be able to restrict itself to the source content.
    SkIRect inputBounds = filter2->filterBounds(kExpectedOutputBounds,
                                                SkMatrix::I(),
                                                SkImageFilter::kReverse_MapDirection,
                                                &kContentBounds);
    REPORTER_ASSERT(reporter, inputBounds == kContentBounds);
}

DEF_TEST() [34/42]

DEF_TEST	(	ImageFilterUnionBounds	,
		reporter
	)

Definition at line 1055 of file ImageFilterTest.cpp.

                                           {
    sk_sp<SkImageFilter> offset(SkImageFilters::Offset(50, 0, nullptr));
    // Regardless of which order they appear in, the image filter bounds should
    // be combined correctly.
    {
        sk_sp<SkImageFilter> composite(SkImageFilters::Blend(SkBlendMode::kSrcOver, offset));
        SkRect bounds = SkRect::MakeIWH(100, 100);
        // Intentionally aliasing here, as that's what the real callers do.
        bounds = composite->computeFastBounds(bounds);
        REPORTER_ASSERT(reporter, bounds == SkRect::MakeIWH(150, 100));
    }
    {
        sk_sp<SkImageFilter> composite(SkImageFilters::Blend(SkBlendMode::kSrcOver, nullptr,
                                                             offset, nullptr));
        SkRect bounds = SkRect::MakeIWH(100, 100);
        // Intentionally aliasing here, as that's what the real callers do.
        bounds = composite->computeFastBounds(bounds);
        REPORTER_ASSERT(reporter, bounds == SkRect::MakeIWH(150, 100));
    }
}

DEF_TEST() [35/42]

DEF_TEST	(	ImageFilterZeroBlurSigma	,
		reporter
	)

Definition at line 738 of file ImageFilterTest.cpp.

                                             {
    test_zero_blur_sigma(reporter, nullptr);
}

DEF_TEST() [36/42]

DEF_TEST	(	ImageSourceBounds	,
		reporter
	)

Definition at line 2216 of file ImageFilterTest.cpp.

                                      {
    sk_sp<SkImage> image(make_gradient_circle(64, 64).asImage());
    // Default src and dst rects.
    sk_sp<SkImageFilter> source1(SkImageFilters::Image(image, SkFilterMode::kNearest));
    SkIRect imageBounds = SkIRect::MakeWH(64, 64);
    SkIRect input(SkIRect::MakeXYWH(10, 20, 30, 40));
    REPORTER_ASSERT(reporter,
                    imageBounds == source1->filterBounds(input, SkMatrix::I(),
                                                         SkImageFilter::kForward_MapDirection,
                                                         nullptr));
    REPORTER_ASSERT(reporter,
                    source1->filterBounds(input, SkMatrix::I(),
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
    SkMatrix scale(SkMatrix::Scale(2, 2));
    SkIRect scaledBounds = SkIRect::MakeWH(128, 128);
    REPORTER_ASSERT(reporter,
                    scaledBounds == source1->filterBounds(input, scale,
                                                          SkImageFilter::kForward_MapDirection,
                                                          nullptr));
    REPORTER_ASSERT(reporter,
                    source1->filterBounds(input, scale,
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
 
    // Specified src and dst rects (which are outside available pixels).
    SkRect src(SkRect::MakeXYWH(0.5, 0.5, 100.5, 100.5));
    SkRect dst(SkRect::MakeXYWH(-10.5, -10.5, 120.5, 120.5));
    sk_sp<SkImageFilter> source2(SkImageFilters::Image(image, src, dst,
                                                       SkSamplingOptions(SkFilterMode::kLinear,
                                                                         SkMipmapMode::kLinear)));
 
    SkRect clippedSrc = src;
    SkAssertResult(clippedSrc.intersect(SkRect::Make(image->dimensions())));
    SkRect clippedDst = SkMatrix::RectToRect(src, dst).mapRect(clippedSrc);
 
    REPORTER_ASSERT(reporter,
                    clippedDst.roundOut() ==
                    source2->filterBounds(input, SkMatrix::I(),
                                          SkImageFilter::kForward_MapDirection, nullptr));
    REPORTER_ASSERT(reporter,
                    source2->filterBounds(input, SkMatrix::I(),
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
    scale.mapRect(&clippedDst);
    scale.mapRect(&clippedSrc);
    REPORTER_ASSERT(reporter,
                    clippedDst.roundOut() ==
                    source2->filterBounds(input, scale,
                                          SkImageFilter::kForward_MapDirection, nullptr));
    REPORTER_ASSERT(reporter,
                    source2->filterBounds(input, scale,
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
}

DEF_TEST() [37/42]

DEF_TEST	(	MorphologyFilterRadiusWithMirrorCTM	,
		reporter
	)

Definition at line 695 of file ImageFilterTest.cpp.

                                                        {
    test_morphology_radius_with_mirror_ctm(reporter, nullptr);
}

DEF_TEST() [38/42]

DEF_TEST	(	OffsetImageFilterBounds	,
		reporter
	)

Definition at line 2051 of file ImageFilterTest.cpp.

                                            {
    const SkIRect src = SkIRect::MakeXYWH(0, 0, 100, 100);
    const SkVector srcOffset = {-50.5f, -50.5f};
    sk_sp<SkImageFilter> offset(SkImageFilters::Offset(srcOffset.fX, srcOffset.fY, nullptr));
 
    // Because the offset has a fractional component, the final output and required input bounds
    // will be rounded out to include an extra pixel.
    SkIRect expectedForward = SkRect::Make(src).makeOffset(srcOffset.fX, srcOffset.fY).roundOut();
    SkIRect boundsForward = offset->filterBounds(src, SkMatrix::I(),
                                                 SkImageFilter::kForward_MapDirection, nullptr);
    REPORTER_ASSERT(reporter, boundsForward == expectedForward);
 
    SkIRect expectedReverse = SkRect::Make(src).makeOffset(-srcOffset.fX, -srcOffset.fY).roundOut();
 
    // Intersect 'expectedReverse' with the source because we are passing &src in as the known
    // input bounds, which is the bounds of non-transparent pixels that can be moved by the offset.
    // While the ::Offset filter could show all pixels inside 'expectedReverse' given that 'src'
    // is also the target device output of the filter, the required input can be made tighter.
    SkAssertResult(expectedReverse.intersect(src));
 
    SkIRect boundsReverse = offset->filterBounds(src, SkMatrix::I(),
                                                 SkImageFilter::kReverse_MapDirection, &src);
    REPORTER_ASSERT(reporter, boundsReverse == expectedReverse);
}

DEF_TEST() [39/42]

DEF_TEST	(	OffsetImageFilterBoundsNoOverflow	,
		reporter
	)

Definition at line 2076 of file ImageFilterTest.cpp.

                                                      {
    const SkIRect src = SkIRect::MakeXYWH(-10.f, -10.f, 20.f, 20.f);
    const SkScalar bigOffset = SkIntToScalar(std::numeric_limits<int>::max()) * 2.f / 3.f;
 
    sk_sp<SkImageFilter> filter =
            SkImageFilters::Blend(SkBlendMode::kSrcOver,
                                  SkImageFilters::Offset(-bigOffset, -bigOffset, nullptr),
                                  SkImageFilters::Offset(bigOffset, bigOffset, nullptr));
    SkIRect boundsForward = filter->filterBounds(src, SkMatrix::I(),
                                                 SkImageFilter::kForward_MapDirection, nullptr);
    // NOTE: isEmpty() will return true even if the l/r or t/b didn't overflow but the dimensions
    // would overflow an int32. However, when isEmpty64() is false, it means the actual edge coords
    // are valid, which is good enough for our purposes (and gfx::Rect has its own strategies for
    // ensuring such a rectangle doesn't get accidentally treated as empty during chromium's
    // conversions).
    REPORTER_ASSERT(reporter, !boundsForward.isEmpty64());
 
    // When querying with unbounded input content, it should not overflow and should not be empty.
    SkIRect boundsReverse = filter->filterBounds(src, SkMatrix::I(),
                                                 SkImageFilter::kReverse_MapDirection, nullptr);
    REPORTER_ASSERT(reporter, !boundsReverse.isEmpty64());
 
    // However in this case, when 'src' is also passed as the content bounds, the ::Offset() filters
    // detect that they would be transparent black. This propagates up to the src-over blend and
    // the entire graph is identified as empty.
    boundsReverse = filter->filterBounds(src, SkMatrix::I(),
                                         SkImageFilter::kReverse_MapDirection, &src);
    REPORTER_ASSERT(reporter, boundsReverse.isEmpty64());
}

DEF_TEST() [40/42]

DEF_TEST	(	PictureImageSourceBounds	,
		reporter
	)

Definition at line 2269 of file ImageFilterTest.cpp.

                                             {
    SkPictureRecorder recorder;
    SkCanvas* recordingCanvas = recorder.beginRecording(64, 64);
 
    SkPaint greenPaint;
    greenPaint.setColor(SK_ColorGREEN);
    recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 30, 20)), greenPaint);
    sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
 
    // Default target rect.
    sk_sp<SkImageFilter> source1(SkImageFilters::Picture(picture));
    SkIRect pictureBounds = SkIRect::MakeWH(64, 64);
    SkIRect input(SkIRect::MakeXYWH(10, 20, 30, 40));
    REPORTER_ASSERT(reporter,
                    pictureBounds == source1->filterBounds(input, SkMatrix::I(),
                                                           SkImageFilter::kForward_MapDirection,
                                                           nullptr));
    REPORTER_ASSERT(reporter,
                    source1->filterBounds(input, SkMatrix::I(),
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
    SkMatrix scale(SkMatrix::Scale(2, 2));
    SkIRect scaledPictureBounds = SkIRect::MakeWH(128, 128);
    REPORTER_ASSERT(reporter,
                    scaledPictureBounds == source1->filterBounds(input, scale,
                                                                 SkImageFilter::kForward_MapDirection,
                                                                 nullptr));
    REPORTER_ASSERT(reporter,
                    source1->filterBounds(input, scale,
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
 
    // Specified target rect.
    SkRect targetRect(SkRect::MakeXYWH(9.5, 9.5, 31, 21));
    sk_sp<SkImageFilter> source2(SkImageFilters::Picture(picture, targetRect));
    REPORTER_ASSERT(reporter,
                    targetRect.roundOut() == source2->filterBounds(input, SkMatrix::I(),
                                                                   SkImageFilter::kForward_MapDirection,
                                                                   nullptr));
    REPORTER_ASSERT(reporter,
                    source2->filterBounds(input, SkMatrix::I(),
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
    scale.mapRect(&targetRect);
    REPORTER_ASSERT(reporter,
                    targetRect.roundOut() == source2->filterBounds(input, scale,
                                                                   SkImageFilter::kForward_MapDirection,
                                                                   nullptr));
    REPORTER_ASSERT(reporter,
                    source2->filterBounds(input, scale,
                                          SkImageFilter::kReverse_MapDirection, &input).isEmpty());
}

DEF_TEST() [41/42]

DEF_TEST	(	XfermodeImageFilterBounds	,
		reporter
	)

Definition at line 2002 of file ImageFilterTest.cpp.

                                              {
    SkIRect background_rect = SkIRect::MakeXYWH(0, 0, 100, 100);
    SkIRect foreground_rect = SkIRect::MakeXYWH(50, 50, 100, 100);
    sk_sp<SkImageFilter> background = SkImageFilters::Crop(SkRect::Make(background_rect), nullptr);
    sk_sp<SkImageFilter> foreground = SkImageFilters::Crop(SkRect::Make(foreground_rect), nullptr);
 
    SkIRect expectedBounds[kSkBlendModeCount];
    // Expect union of input rects by default.
    for (int i = 0; i < kSkBlendModeCount; ++i) {
        expectedBounds[i] = background_rect;
        expectedBounds[i].join(foreground_rect);
    }
 
    SkIRect intersection = background_rect;
    intersection.intersect(foreground_rect);
    expectedBounds[static_cast<int>(SkBlendMode::kClear)] = SkIRect::MakeEmpty();
    expectedBounds[static_cast<int>(SkBlendMode::kSrc)] = foreground_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kDst)] = background_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kSrcIn)] = intersection;
    expectedBounds[static_cast<int>(SkBlendMode::kDstIn)] = intersection;
    expectedBounds[static_cast<int>(SkBlendMode::kSrcOut)] = foreground_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kDstOut)] = background_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kSrcATop)] = background_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kDstATop)] = foreground_rect;
    expectedBounds[static_cast<int>(SkBlendMode::kModulate)] = intersection;
 
    // Use a very large input bounds so that the crop rects stored in 'background' and 'foreground'
    // aren't restricted.
    SkIRect src = SkRectPriv::MakeILarge();
    for (int i = 0; i < kSkBlendModeCount; ++i) {
        sk_sp<SkImageFilter> xfermode(SkImageFilters::Blend(static_cast<SkBlendMode>(i),
                                                            background, foreground, nullptr));
        auto bounds = xfermode->filterBounds(src, SkMatrix::I(),
                                             SkImageFilter::kForward_MapDirection, nullptr);
        REPORTER_ASSERT(reporter, bounds == expectedBounds[i]);
    }
 
    // Test empty intersection.
    sk_sp<SkImageFilter> background2 =
            SkImageFilters::Crop(SkRect::MakeXYWH(0, 0, 20, 20), nullptr);
    sk_sp<SkImageFilter> foreground2 =
            SkImageFilters::Crop(SkRect::MakeXYWH(40, 40, 50, 50), nullptr);
    sk_sp<SkImageFilter> xfermode(SkImageFilters::Blend(
            SkBlendMode::kSrcIn, std::move(background2), std::move(foreground2), nullptr));
    auto bounds = xfermode->filterBounds(src, SkMatrix::I(),
                                         SkImageFilter::kForward_MapDirection, nullptr);
    REPORTER_ASSERT(reporter, bounds.isEmpty());
}

DEF_TEST() [42/42]

DEF_TEST	(	XfermodeImageFilterCroppedInput	,
		reporter
	)

Definition at line 1547 of file ImageFilterTest.cpp.

                                                    {
    test_xfermode_cropped_input(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(100, 100)).get(),
                                reporter);
}

draw_blurred_rect()

static void draw_blurred_rect ( SkCanvas *  canvas )

static

Definition at line 1107 of file ImageFilterTest.cpp.

                                                {
    SkPaint filterPaint;
    filterPaint.setColor(SK_ColorWHITE);
    filterPaint.setImageFilter(SkImageFilters::Blur(SkIntToScalar(8), 0, nullptr));
    canvas->saveLayer(nullptr, &filterPaint);
    SkPaint whitePaint;
    whitePaint.setColor(SK_ColorWHITE);
    canvas->drawRect(SkRect::Make(SkIRect::MakeWH(4, 4)), whitePaint);
    canvas->restore();
}

draw_picture_clipped()

static void draw_picture_clipped ( SkCanvas *  canvas, const SkRect &  clipRect, const SkPicture *  picture  )

static

Definition at line 1118 of file ImageFilterTest.cpp.

                                                                                                     {
    canvas->save();
    canvas->clipRect(clipRect);
    canvas->drawPicture(picture);
    canvas->restore();
}

draw_saveLayer_picture()

static void draw_saveLayer_picture ( int  width, int  height, int  tileSize, SkBBHFactory *  factory, SkBitmap *  result  )

static

Definition at line 860 of file ImageFilterTest.cpp.

                                                                            {
 
    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(50), 0);
 
    sk_sp<SkColorFilter> cf(SkColorFilters::Blend(SK_ColorWHITE, SkBlendMode::kSrc));
    sk_sp<SkImageFilter> cfif(SkImageFilters::ColorFilter(std::move(cf), nullptr));
    sk_sp<SkImageFilter> imageFilter(SkImageFilters::MatrixTransform(matrix,
                                                                     SkSamplingOptions(),
                                                                     std::move(cfif)));
 
    SkPaint paint;
    paint.setImageFilter(std::move(imageFilter));
    SkPictureRecorder recorder;
    SkRect bounds = SkRect::Make(SkIRect::MakeXYWH(0, 0, 50, 50));
    SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(width),
                                                        SkIntToScalar(height),
                                                        factory);
    recordingCanvas->translate(-55, 0);
    recordingCanvas->saveLayer(&bounds, &paint);
    recordingCanvas->restore();
    sk_sp<SkPicture> picture1(recorder.finishRecordingAsPicture());
 
    result->allocN32Pixels(width, height);
    SkCanvas canvas(*result);
    canvas.clear(0);
    canvas.clipRect(SkRect::Make(SkIRect::MakeWH(tileSize, tileSize)));
    canvas.drawPicture(picture1.get());
}

make_blue()

static sk_sp< SkImageFilter > make_blue ( sk_sp< SkImageFilter >  input, const SkIRect *  cropRect  )

static

Definition at line 370 of file ImageFilterTest.cpp.

                                                                                           {
    sk_sp<SkColorFilter> filter(SkColorFilters::Blend(SK_ColorBLUE, SkBlendMode::kSrcIn));
    return SkImageFilters::ColorFilter(std::move(filter), std::move(input), cropRect);
}

make_blur()

static sk_sp< SkImageFilter > make_blur ( sk_sp< SkImageFilter >  input )

static

Definition at line 913 of file ImageFilterTest.cpp.

                                                                  {
    return SkImageFilters::Blur(SK_Scalar1, SK_Scalar1, std::move(input));
}

make_context() [1/2]

static skif::Context make_context ( const SkIRect &  out, const SkSpecialImage *  src  )

static

Definition at line 298 of file ImageFilterTest.cpp.

                                                                               {
    sk_sp<skif::Backend> backend;
    if (src->isGaneshBacked()) {
        backend = skif::MakeGaneshBackend(sk_ref_sp(src->getContext()), kTestSurfaceOrigin,
                                          src->props(), src->colorType());
    } else {
        backend = skif::MakeRasterBackend(src->props(), src->colorType());
    }
 
    return skif::Context{std::move(backend),
                         skif::Mapping{SkMatrix::I()},
                         skif::LayerSpace<SkIRect>{out},
                         skif::FilterResult{sk_ref_sp(src)},
                         src->getColorSpace(),
                         /*stats=*/nullptr};
}

make_context() [2/2]

static skif::Context make_context ( int  outWidth, int  outHeight, const SkSpecialImage *  src  )

static

Definition at line 314 of file ImageFilterTest.cpp.

                                                                                        {
    return make_context(SkIRect::MakeWH(outWidth, outHeight), src);
}

make_drop_shadow()

static sk_sp< SkImageFilter > make_drop_shadow ( sk_sp< SkImageFilter >  input )

static

Definition at line 917 of file ImageFilterTest.cpp.

                                                                         {
    return SkImageFilters::DropShadow(100, 100, 10, 10, SK_ColorBLUE, std::move(input));
}

make_grayscale()

static sk_sp< SkImageFilter > make_grayscale ( sk_sp< SkImageFilter >  input, const SkIRect *  cropRect  )

static

Definition at line 358 of file ImageFilterTest.cpp.

                                                                    {
    float matrix[20];
    memset(matrix, 0, 20 * sizeof(float));
    matrix[0] = matrix[5] = matrix[10] = 0.2126f;
    matrix[1] = matrix[6] = matrix[11] = 0.7152f;
    matrix[2] = matrix[7] = matrix[12] = 0.0722f;
    matrix[18] = 1.0f;
    sk_sp<SkColorFilter> filter(SkColorFilters::Matrix(matrix));
    return SkImageFilters::ColorFilter(std::move(filter), std::move(input), cropRect);
}

make_scale()

static sk_sp< SkImageFilter > make_scale ( float  amount, sk_sp< SkImageFilter >  input  )

static

Definition at line 348 of file ImageFilterTest.cpp.

                                                                                 {
    float s = amount;
    float matrix[20] = { s, 0, 0, 0, 0,
                         0, s, 0, 0, 0,
                         0, 0, s, 0, 0,
                         0, 0, 0, s, 0 };
    sk_sp<SkColorFilter> filter(SkColorFilters::Matrix(matrix));
    return SkImageFilters::ColorFilter(std::move(filter), std::move(input));
}

make_small_image()

static sk_sp< SkImage > make_small_image ( )

static

Definition at line 318 of file ImageFilterTest.cpp.

                                         {
    auto surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(kBitmapSize, kBitmapSize)));
    SkCanvas* canvas = surface->getCanvas();
    canvas->clear(0x00000000);
    SkPaint darkPaint;
    darkPaint.setColor(0xFF804020);
    SkPaint lightPaint;
    lightPaint.setColor(0xFF244484);
    const int kRectSize = kBitmapSize / 4;
    static_assert(kBitmapSize % 4 == 0, "bitmap size not multiple of 4");
 
    for (int y = 0; y < kBitmapSize; y += kRectSize) {
        for (int x = 0; x < kBitmapSize; x += kRectSize) {
            canvas->save();
            canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
            canvas->drawRect(
                    SkRect::MakeXYWH(0,         0,         kRectSize, kRectSize), darkPaint);
            canvas->drawRect(
                    SkRect::MakeXYWH(kRectSize, 0,         kRectSize, kRectSize), lightPaint);
            canvas->drawRect(
                    SkRect::MakeXYWH(0,         kRectSize, kRectSize, kRectSize), lightPaint);
            canvas->drawRect(
                    SkRect::MakeXYWH(kRectSize, kRectSize, kRectSize, kRectSize), darkPaint);
            canvas->restore();
        }
    }
 
    return surface->makeImageSnapshot();
}

special_image_to_bitmap()

static bool special_image_to_bitmap ( GrDirectContext *  dContext, const SkSpecialImage *  src, SkBitmap *  dst  )

static

Definition at line 537 of file ImageFilterTest.cpp.

                                                   {
    sk_sp<SkImage> img = src->asImage();
    if (!img) {
        return false;
    }
 
    if (!dst->tryAllocN32Pixels(src->width(), src->height())) {
        return false;
    }
 
    return img->readPixels(dContext, dst->pixmap(), src->subset().fLeft, src->subset().fTop);
}

test_arithmetic_bounds()

static void test_arithmetic_bounds ( skiatest::Reporter *  reporter, float  k1, float  k2, float  k3, float  k4, sk_sp< SkImageFilter >  background, sk_sp< SkImageFilter >  foreground, const SkIRect *  crop, const SkIRect &  expected  )

static

Definition at line 2106 of file ImageFilterTest.cpp.

                                                                                 {
    sk_sp<SkImageFilter> arithmetic(SkImageFilters::Arithmetic(
            k1, k2, k3, k4, false, std::move(background), std::move(foreground), crop));
    // Use a very large input bounds so that the crop rects stored in 'background' and 'foreground'
    // aren't restricted.
    SkIRect src = SkRectPriv::MakeILarge();
    SkIRect bounds = arithmetic->filterBounds(src, SkMatrix::I(),
                                              SkImageFilter::kForward_MapDirection, nullptr);
    REPORTER_ASSERT(reporter, expected == bounds);
}

test_arithmetic_combinations()

static void test_arithmetic_combinations ( skiatest::Reporter *  reporter, float  v  )

static

Definition at line 2120 of file ImageFilterTest.cpp.

                                                                              {
    SkIRect bgRect = SkIRect::MakeXYWH(0, 0, 100, 100);
    SkIRect fgRect = SkIRect::MakeXYWH(50, 50, 100, 100);
    sk_sp<SkImageFilter> background = SkImageFilters::Crop(SkRect::Make(bgRect), nullptr);
    sk_sp<SkImageFilter> foreground = SkImageFilters::Crop(SkRect::Make(fgRect), nullptr);
 
    SkIRect unionRect = bgRect;
    unionRect.join(fgRect);
    SkIRect intersection = bgRect;
    intersection.intersect(fgRect);
 
    // Test with crop. When k4 is non-zero, the result is expected to be cropRect
    // regardless of inputs because the filter affects the whole crop area. When there is no crop
    // rect, it should report an effectively infinite output.
    static const SkIRect kInf = SkRectPriv::MakeILarge();
    test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, nullptr,
                           SkIRect::MakeEmpty());
    test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, nullptr, bgRect);
    test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, nullptr, fgRect);
    test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, nullptr, unionRect);
    test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, nullptr, intersection);
    test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, nullptr, bgRect);
    test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, nullptr, fgRect);
    test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, nullptr, kInf);
    test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, nullptr, unionRect);
    test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, nullptr, kInf);
 
    SkIRect cropRect = SkIRect::MakeXYWH(-111, -222, 333, 444);
    test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, &cropRect,
                           SkIRect::MakeEmpty());
    test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, &cropRect, bgRect);
    test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, &cropRect, fgRect);
    test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, &cropRect, unionRect);
    test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, &cropRect, intersection);
    test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, &cropRect, bgRect);
    test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, &cropRect, fgRect);
    test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, &cropRect, cropRect);
    test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, &cropRect, unionRect);
    test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, &cropRect, cropRect);
}

test_big_kernel()

static void test_big_kernel ( skiatest::Reporter *  reporter, GrRecordingContext *  rContext  )

static

Definition at line 1225 of file ImageFilterTest.cpp.

                                                                                      {
    // Check that a kernel that is too big for the GPU still works
    SkScalar identityKernel[49] = {
        0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 1, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0
    };
    SkISize kernelSize = SkISize::Make(7, 7);
    SkScalar gain = SK_Scalar1, bias = 0;
    SkIPoint kernelOffset = SkIPoint::Make(0, 0);
 
    sk_sp<SkImageFilter> filter(SkImageFilters::MatrixConvolution(
            kernelSize, identityKernel, gain, bias, kernelOffset,
            SkTileMode::kClamp, true, nullptr));
 
    sk_sp<SkSpecialImage> srcImg(create_empty_special_image(rContext, 100));
    SkASSERT(srcImg);
 
    SkIPoint offset;
    skif::Context ctx = make_context(100, 100, srcImg.get());
    sk_sp<SkSpecialImage> resultImg(as_IFB(filter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, resultImg);
    REPORTER_ASSERT(reporter, SkToBool(rContext) == resultImg->isGaneshBacked());
    REPORTER_ASSERT(reporter, resultImg->width() == 100 && resultImg->height() == 100);
    REPORTER_ASSERT(reporter, offset.fX == 0 && offset.fY == 0);
}

test_clipped_picture_imagefilter()

static void test_clipped_picture_imagefilter ( skiatest::Reporter *  reporter, GrRecordingContext *  rContext  )

static

Definition at line 1304 of file ImageFilterTest.cpp.

                                                                           {
    sk_sp<SkPicture> picture;
 
    {
        SkRTreeFactory factory;
        SkPictureRecorder recorder;
        SkCanvas* recordingCanvas = recorder.beginRecording(1, 1, &factory);
 
        // Create an SkPicture which simply draws a green 1x1 rectangle.
        SkPaint greenPaint;
        greenPaint.setColor(SK_ColorGREEN);
        recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(1, 1)), greenPaint);
        picture = recorder.finishRecordingAsPicture();
    }
 
    sk_sp<SkSpecialImage> srcImg(create_empty_special_image(rContext, 2));
 
    sk_sp<SkImageFilter> imageFilter(SkImageFilters::Picture(picture));
 
    SkIPoint offset;
    skif::Context ctx = make_context(SkIRect::MakeXYWH(1,1,1,1), srcImg.get());
 
    sk_sp<SkSpecialImage> resultImage(
            as_IFB(imageFilter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, !resultImage);
}

test_composed_imagefilter_bounds()

static void test_composed_imagefilter_bounds ( skiatest::Reporter *  reporter, GrDirectContext *  dContext  )

static

Definition at line 1582 of file ImageFilterTest.cpp.

                                                                        {
    // The bounds passed to the inner filter must be filtered by the outer
    // filter, so that the inner filter produces the pixels that the outer
    // filter requires as input. This matters if the outer filter moves pixels.
    // Here, accounting for the outer offset is necessary so that the green
    // pixels of the picture are not clipped.
 
    SkPictureRecorder recorder;
    SkCanvas* recordingCanvas = recorder.beginRecording(SkRect::MakeIWH(200, 100));
    recordingCanvas->clipRect(SkRect::MakeXYWH(100, 0, 100, 100));
    recordingCanvas->clear(SK_ColorGREEN);
    sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
    sk_sp<SkImageFilter> pictureFilter(SkImageFilters::Picture(picture));
    SkIRect cropRect = SkIRect::MakeWH(100, 100);
    sk_sp<SkImageFilter> offsetFilter(SkImageFilters::Offset(-100, 0, nullptr, &cropRect));
    sk_sp<SkImageFilter> composedFilter(SkImageFilters::Compose(std::move(offsetFilter),
                                                                std::move(pictureFilter)));
 
    sk_sp<SkSpecialImage> sourceImage(create_empty_special_image(dContext, 100));
    skif::Context ctx = make_context(100, 100, sourceImage.get());
 
    SkIPoint offset;
    sk_sp<SkSpecialImage> result(
            as_IFB(composedFilter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, offset.isZero());
    REPORTER_ASSERT(reporter, result);
    REPORTER_ASSERT(reporter, result->subset().size() == SkISize::Make(100, 100));
 
    SkBitmap resultBM;
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, result.get(), &resultBM));
    REPORTER_ASSERT(reporter, resultBM.getColor(50, 50) == SK_ColorGREEN);
}

test_composed_imagefilter_offset()

static void test_composed_imagefilter_offset ( skiatest::Reporter *  reporter, GrRecordingContext *  rContext  )

static

Definition at line 1552 of file ImageFilterTest.cpp.

                                                                           {
    sk_sp<SkSpecialImage> srcImg(create_empty_special_image(rContext, 100));
 
    SkIRect cropRect = SkIRect::MakeXYWH(1, 0, 20, 20);
    sk_sp<SkImageFilter> offsetFilter(SkImageFilters::Offset(0, 0, nullptr, &cropRect));
    sk_sp<SkImageFilter> blurFilter(SkImageFilters::Blur(SK_Scalar1, SK_Scalar1,
                                                            nullptr, &cropRect));
    sk_sp<SkImageFilter> composedFilter(SkImageFilters::Compose(std::move(blurFilter),
                                                                std::move(offsetFilter)));
    SkIPoint offset;
    skif::Context ctx = make_context(100, 100, srcImg.get());
 
    sk_sp<SkSpecialImage> resultImg(
            as_IFB(composedFilter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, resultImg);
    REPORTER_ASSERT(reporter, offset.fX == 1 && offset.fY == 0);
}

test_cropRects()

static void test_cropRects ( skiatest::Reporter *  reporter, GrRecordingContext *  rContext  )

static

Definition at line 513 of file ImageFilterTest.cpp.

                                                                                     {
    // Check that all filters offset to their absolute crop rect,
    // unaffected by the input crop rect.
    // Tests pass by not asserting.
    sk_sp<SkSpecialImage> srcImg(create_empty_special_image(rContext, 100));
    SkASSERT(srcImg);
 
    SkIRect inputCropRect = SkIRect::MakeXYWH(8, 13, 80, 80);
    SkIRect cropRect = SkIRect::MakeXYWH(20, 30, 60, 60);
    sk_sp<SkImageFilter> input(make_grayscale(nullptr, &inputCropRect));
 
    FilterList filters(input, &cropRect);
 
    for (int i = 0; i < filters.count(); ++i) {
        SkImageFilter* filter = filters.getFilter(i);
        SkIPoint offset;
        skif::Context ctx = make_context(100, 100, srcImg.get());
        sk_sp<SkSpecialImage> resultImg(as_IFB(filter)->filterImage(ctx)
                                                       .imageAndOffset(ctx, &offset));
        REPORTER_ASSERT(reporter, resultImg, "%s", filters.getName(i));
        REPORTER_ASSERT(reporter, offset.fX == 20 && offset.fY == 30, "%s", filters.getName(i));
    }
}

test_fail_affects_transparent_black()

static void test_fail_affects_transparent_black ( skiatest::Reporter *  reporter, GrDirectContext *  dContext  )

static

Definition at line 751 of file ImageFilterTest.cpp.

                                                                           {
    sk_sp<SkImageFilter> failFilter = SkImageFilters::Empty();
    sk_sp<SkSpecialImage> source(create_empty_special_image(dContext, 5));
    skif::Context ctx = make_context(1, 1, source.get());
 
    sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrc));
    SkASSERT(as_CFB(green)->affectsTransparentBlack());
    sk_sp<SkImageFilter> greenFilter(SkImageFilters::ColorFilter(std::move(green),
                                                                 std::move(failFilter)));
    SkIPoint offset;
    sk_sp<SkSpecialImage> result(as_IFB(greenFilter)->filterImage(ctx)
                                                     .imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, nullptr != result.get());
    if (result) {
        SkBitmap resultBM;
        REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, result.get(), &resultBM));
        REPORTER_ASSERT(reporter, *resultBM.getAddr32(0, 0) == SK_ColorGREEN);
    }
}

test_huge_blur()

static void test_huge_blur ( SkCanvas *  canvas, skiatest::Reporter *  reporter  )

static

Definition at line 1394 of file ImageFilterTest.cpp.

                                                                         {
    SkBitmap bitmap;
    bitmap.allocN32Pixels(100, 100);
    bitmap.eraseARGB(0, 0, 0, 0);
 
    // Check that a blur with a very large radius does not crash or assert.
    SkPaint paint;
    paint.setImageFilter(SkImageFilters::Blur(SkIntToScalar(1<<30), SkIntToScalar(1<<30), nullptr));
    canvas->drawImage(bitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);
}

test_imagefilter_merge_result_size()

static void test_imagefilter_merge_result_size ( skiatest::Reporter *  reporter, GrRecordingContext *  rContext  )

static

Definition at line 1076 of file ImageFilterTest.cpp.

                                                                             {
    SkBitmap greenBM;
    greenBM.allocN32Pixels(20, 20);
    greenBM.eraseColor(SK_ColorGREEN);
    sk_sp<SkImage> greenImage(greenBM.asImage());
    sk_sp<SkImageFilter> source(SkImageFilters::Image(std::move(greenImage), {}));
    sk_sp<SkImageFilter> merge(SkImageFilters::Merge(source, source));
 
    sk_sp<SkSpecialImage> srcImg(create_empty_special_image(rContext, 1));
 
    skif::Context ctx = make_context(100, 100, srcImg.get());
    SkIPoint offset;
 
    sk_sp<SkSpecialImage> resultImg(as_IFB(merge)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, resultImg);
 
    REPORTER_ASSERT(reporter, resultImg->width() == 20 && resultImg->height() == 20);
}

test_large_blur_input()

static void test_large_blur_input ( skiatest::Reporter *  reporter, SkCanvas *  canvas  )

static

Definition at line 1726 of file ImageFilterTest.cpp.

                                                                                {
    SkBitmap largeBmp;
    int largeW = 5000;
    int largeH = 5000;
    // If we're GPU-backed make the bitmap too large to be converted into a texture.
    if (auto ctx = canvas->recordingContext()) {
        largeW = ctx->priv().caps()->maxTextureSize() + 1;
    }
 
    largeBmp.allocN32Pixels(largeW, largeH);
    largeBmp.eraseColor(0);
    if (!largeBmp.getPixels()) {
        ERRORF(reporter, "Failed to allocate large bmp.");
        return;
    }
 
    sk_sp<SkImage> largeImage(largeBmp.asImage());
    if (!largeImage) {
        ERRORF(reporter, "Failed to create large image.");
        return;
    }
 
    sk_sp<SkImageFilter> largeSource(SkImageFilters::Image(std::move(largeImage), {}));
    if (!largeSource) {
        ERRORF(reporter, "Failed to create large SkImageSource.");
        return;
    }
 
    sk_sp<SkImageFilter> blur(SkImageFilters::Blur(10.f, 10.f, std::move(largeSource)));
    if (!blur) {
        ERRORF(reporter, "Failed to create SkBlurImageFilter.");
        return;
    }
 
    SkPaint paint;
    paint.setImageFilter(std::move(blur));
 
    // This should not crash (http://crbug.com/570479).
    canvas->drawRect(SkRect::MakeIWH(largeW, largeH), paint);
}

test_make_with_filter()

static void test_make_with_filter ( skiatest::Reporter *  reporter, const std::function< sk_sp< SkSurface >(int width, int height)> &  createSurface, const std::function< sk_sp< SkImage >(sk_sp< SkImage > src, const SkImageFilter *filter, const SkIRect &subset, const SkIRect &clipBounds, SkIRect *outSubset, SkIPoint *offset)> &  makeWithFilter  )

static

Definition at line 1772 of file ImageFilterTest.cpp.

                                                                               {
    sk_sp<SkSurface> surface(createSurface(192, 128));
    surface->getCanvas()->clear(SK_ColorRED);
    SkPaint bluePaint;
    bluePaint.setColor(SK_ColorBLUE);
    SkIRect subset = SkIRect::MakeXYWH(25, 20, 50, 50);
    surface->getCanvas()->drawRect(SkRect::Make(subset), bluePaint);
    sk_sp<SkImage> sourceImage = surface->makeImageSnapshot();
 
    sk_sp<SkImageFilter> filter = make_grayscale(nullptr, nullptr);
    SkIRect clipBounds = SkIRect::MakeXYWH(30, 35, 100, 100);
    SkIRect outSubset;
    SkIPoint offset;
    sk_sp<SkImage> result;
 
    result = makeWithFilter(sourceImage, nullptr, subset, clipBounds, &outSubset, &offset);
    REPORTER_ASSERT(reporter, !result);  // filter is required
 
    result = makeWithFilter(sourceImage, filter.get(), subset, clipBounds, nullptr, &offset);
    REPORTER_ASSERT(reporter, !result);  // outSubset is required
 
    result = makeWithFilter(sourceImage, filter.get(), subset, clipBounds, &outSubset, nullptr);
    REPORTER_ASSERT(reporter, !result);  // offset is required
 
    SkIRect bigSubset = SkIRect::MakeXYWH(-10000, -10000, 20000, 20000);
    result = makeWithFilter(sourceImage, filter.get(), bigSubset, clipBounds, &outSubset, &offset);
    REPORTER_ASSERT(reporter, !result);  // subset needs to be w/in source's bounds
 
    const SkIRect kEmpty = SkIRect::MakeEmpty();
    result = makeWithFilter(sourceImage, filter.get(), kEmpty, clipBounds, &outSubset, &offset);
    REPORTER_ASSERT(reporter, !result);  // subset can't be empty
 
    result = makeWithFilter(sourceImage, filter.get(), subset, kEmpty, &outSubset, &offset);
    REPORTER_ASSERT(reporter, !result);  // clipBounds can't be empty
 
    const SkIRect kLeftField = SkIRect::MakeXYWH(-1000, 0, 100, 100);
    result = makeWithFilter(sourceImage, filter.get(), subset, kLeftField, &outSubset, &offset);
    REPORTER_ASSERT(reporter, !result);
 
    result = makeWithFilter(sourceImage, filter.get(), subset, clipBounds, &outSubset, &offset);
 
    REPORTER_ASSERT(reporter, result);
    REPORTER_ASSERT(reporter, result->bounds().contains(outSubset));
    SkIRect destRect = SkIRect::MakeXYWH(offset.x(), offset.y(),
                                         outSubset.width(), outSubset.height());
    REPORTER_ASSERT(reporter, clipBounds.contains(destRect));
 
    // In GPU-mode, this case creates a special image with a backing size that differs from
    // the content size
    {
        clipBounds.setXYWH(0, 0, 170, 100);
        subset.setXYWH(0, 0, 160, 90);
 
        filter = SkImageFilters::Blend(SkBlendMode::kSrcOver, nullptr);
        result = makeWithFilter(sourceImage, filter.get(), subset, clipBounds, &outSubset, &offset);
        REPORTER_ASSERT(reporter, result);
 
        // In Ganesh, we want the result image (and all intermediate steps) to have used the same
        // origin as the original surface.
        if (result && as_IB(result)->isGaneshBacked()) {
            SkImage_GaneshBase* base = static_cast<SkImage_GaneshBase*>(result.get());
            REPORTER_ASSERT(reporter, base->origin() == kTestSurfaceOrigin);
        }
    }
}

test_morphology_radius_with_mirror_ctm()

static void test_morphology_radius_with_mirror_ctm ( skiatest::Reporter *  reporter, GrDirectContext *  dContext  )

static

Definition at line 617 of file ImageFilterTest.cpp.

                                                                              {
    // Check that SkMorphologyImageFilter maps the radius correctly when the
    // CTM contains a mirroring transform.
    static const int kWidth = 32, kHeight = 32;
    static const int kRadius = 8;
 
    sk_sp<SkImageFilter> filter(SkImageFilters::Dilate(kRadius, kRadius, nullptr));
 
    SkBitmap bitmap;
    bitmap.allocN32Pixels(kWidth, kHeight);
    SkCanvas canvas(bitmap);
    canvas.clear(SK_ColorTRANSPARENT);
    SkPaint paint;
    paint.setColor(SK_ColorWHITE);
    canvas.drawRect(SkRect::MakeXYWH(kWidth / 4, kHeight / 4, kWidth / 2, kHeight / 2),
                    paint);
    sk_sp<SkImage> image = bitmap.asImage();
    sk_sp<SkSpecialImage> imgSrc;
    if (dContext) {
        imgSrc = SkSpecialImages::MakeFromTextureImage(
                dContext, SkIRect::MakeWH(kWidth, kHeight), image, SkSurfaceProps());
    } else {
        imgSrc = SkSpecialImages::MakeFromRaster(SkIRect::MakeWH(kWidth, kHeight), image, {});
    }
 
    SkIPoint offset;
    skif::Context ctx = make_context(32, 32, imgSrc.get());
 
    sk_sp<SkSpecialImage> normalResult(
            as_IFB(filter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, normalResult);
 
    SkMatrix mirrorX;
    mirrorX.setTranslate(0, SkIntToScalar(32));
    mirrorX.preScale(SK_Scalar1, -SK_Scalar1);
    skif::Context mirrorXCTX = ctx.withNewMapping(skif::Mapping(mirrorX));
 
    sk_sp<SkSpecialImage> mirrorXResult(
            as_IFB(filter)->filterImage(mirrorXCTX).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, mirrorXResult);
 
    SkMatrix mirrorY;
    mirrorY.setTranslate(SkIntToScalar(32), 0);
    mirrorY.preScale(-SK_Scalar1, SK_Scalar1);
    skif::Context mirrorYCTX = ctx.withNewMapping(skif::Mapping(mirrorY));
 
    sk_sp<SkSpecialImage> mirrorYResult(
            as_IFB(filter)->filterImage(mirrorYCTX).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, mirrorYResult);
 
    SkBitmap normalResultBM, mirrorXResultBM, mirrorYResultBM;
 
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, normalResult.get(),
                                                      &normalResultBM));
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, mirrorXResult.get(),
                                                      &mirrorXResultBM));
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, mirrorYResult.get(),
                                                      &mirrorYResultBM));
 
    for (int y = 0; y < kHeight; y++) {
        int diffs = memcmp(normalResultBM.getAddr32(0, y),
                           mirrorXResultBM.getAddr32(0, y),
                           normalResultBM.rowBytes());
        REPORTER_ASSERT(reporter, !diffs);
        if (diffs) {
            break;
        }
        diffs = memcmp(normalResultBM.getAddr32(0, y),
                       mirrorYResultBM.getAddr32(0, y),
                       normalResultBM.rowBytes());
        REPORTER_ASSERT(reporter, !diffs);
        if (diffs) {
            break;
        }
    }
}

test_negative_blur_sigma()

static void test_negative_blur_sigma ( skiatest::Reporter *  reporter, GrDirectContext *  dContext  )

static

Definition at line 551 of file ImageFilterTest.cpp.

                                                                {
    // Check that SkBlurImageFilter will reject a negative sigma on creation, but properly uses the
    // absolute value of the mapped sigma after CTM application.
    static const int kWidth = 32, kHeight = 32;
    static const SkScalar kBlurSigma = SkIntToScalar(5);
 
    sk_sp<SkImageFilter> positiveFilter(SkImageFilters::Blur(kBlurSigma, kBlurSigma, nullptr));
    sk_sp<SkImageFilter> negativeFilter(SkImageFilters::Blur(-kBlurSigma, kBlurSigma, nullptr));
    REPORTER_ASSERT(reporter, !negativeFilter);
 
    sk_sp<SkImage> gradient = make_gradient_circle(kWidth, kHeight).asImage();
    sk_sp<SkSpecialImage> imgSrc;
    if (dContext) {
        imgSrc = SkSpecialImages::MakeFromTextureImage(
                dContext, SkIRect::MakeWH(kWidth, kHeight), gradient, SkSurfaceProps());
    } else {
        imgSrc = SkSpecialImages::MakeFromRaster(SkIRect::MakeWH(kWidth, kHeight), gradient, {});
    }
 
    SkIPoint offset;
    skif::Context ctx = make_context(32, 32, imgSrc.get());
 
    sk_sp<SkSpecialImage> positiveResult(
            as_IFB(positiveFilter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, positiveResult);
 
    SkMatrix negativeScale;
    negativeScale.setScale(-SK_Scalar1, SK_Scalar1);
    skif::Context negativeCTX = ctx.withNewMapping(skif::Mapping(negativeScale));
 
    sk_sp<SkSpecialImage> negativeResult(
            as_IFB(positiveFilter)->filterImage(negativeCTX).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, negativeResult);
 
 
    SkBitmap positiveResultBM;
    SkBitmap negativeResultBM;
 
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, positiveResult.get(),
                                                      &positiveResultBM));
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, negativeResult.get(),
                                                      &negativeResultBM));
 
    for (int y = 0; y < kHeight; y++) {
        int diffs = memcmp(positiveResultBM.getAddr32(0, y),
                           negativeResultBM.getAddr32(0, y),
                           positiveResultBM.rowBytes());
        REPORTER_ASSERT(reporter, !diffs);
        if (diffs) {
            break;
        }
    }
}

test_xfermode_cropped_input()

static void test_xfermode_cropped_input ( SkSurface *  surf, skiatest::Reporter *  reporter  )

static

Definition at line 1446 of file ImageFilterTest.cpp.

                                                                                     {
    auto canvas = surf->getCanvas();
    canvas->clear(SK_ColorRED);
 
    SkBitmap bitmap;
    bitmap.allocN32Pixels(1, 1);
    bitmap.eraseARGB(255, 255, 255, 255);
 
    sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrcIn));
    sk_sp<SkImageFilter> greenFilter(SkImageFilters::ColorFilter(green, nullptr));
    SkIRect cropRect = SkIRect::MakeEmpty();
    sk_sp<SkImageFilter> croppedOut(SkImageFilters::ColorFilter(green, nullptr, &cropRect));
 
    // Check that an blend image filter whose input has been cropped out still draws the other
    // input. Also check that drawing with both inputs cropped out doesn't cause a GPU warning.
    SkBlendMode mode = SkBlendMode::kSrcOver;
    sk_sp<SkImageFilter> xfermodeNoFg(SkImageFilters::Blend(
            mode, greenFilter, croppedOut, nullptr));
    sk_sp<SkImageFilter> xfermodeNoBg(SkImageFilters::Blend(
            mode, croppedOut, greenFilter, nullptr));
    sk_sp<SkImageFilter> xfermodeNoFgNoBg(SkImageFilters::Blend(
            mode, croppedOut,  croppedOut, nullptr));
 
    SkPaint paint;
    paint.setImageFilter(std::move(xfermodeNoFg));
    canvas->drawImage(bitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);   // drawSprite
 
    // xfermodeNoFg is a src-over blend between a green image and a transparent black image,
    // so should just be green.
    uint32_t pixel;
    SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
    surf->readPixels(info, &pixel, 4, 0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    // xfermodeNoBg is the reverse of the above, but because it's src-over the final blend
    // between transparent black and green is still green.
    canvas->clear(SK_ColorRED); // should be overwritten
    paint.setImageFilter(std::move(xfermodeNoBg));
    canvas->drawImage(bitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);   // drawSprite
    surf->readPixels(info, &pixel, 4, 0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    // xfermodeNoFgNoBg is a src-over blend of two empty images, so should produce no change
    // to the image.
    canvas->clear(SK_ColorRED); // should not be overwritten
    paint.setImageFilter(std::move(xfermodeNoFgNoBg));
    canvas->drawImage(bitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);   // drawSprite
    surf->readPixels(info, &pixel, 4, 0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorRED);
}

test_zero_blur_sigma()

static void test_zero_blur_sigma ( skiatest::Reporter *  reporter, GrDirectContext *  dContext  )

static

Definition at line 706 of file ImageFilterTest.cpp.

                                                                                        {
    // Check that SkBlurImageFilter with a zero sigma and a non-zero srcOffset works correctly.
    SkIRect cropRect = SkIRect::MakeXYWH(5, 0, 5, 10);
    sk_sp<SkImageFilter> input(SkImageFilters::Offset(0, 0, nullptr, &cropRect));
    sk_sp<SkImageFilter> filter(SkImageFilters::Blur(0, 0, std::move(input), &cropRect));
 
    sk_sp<SkSpecialImage> image = create_empty_special_image(dContext, 10, SkColors::kGreen);
 
    SkIPoint offset;
    skif::Context ctx = make_context(32, 32, image.get());
 
 
    sk_sp<SkSpecialImage> result(as_IFB(filter)->filterImage(ctx).imageAndOffset(ctx, &offset));
    REPORTER_ASSERT(reporter, offset.fX == 5 && offset.fY == 0);
    REPORTER_ASSERT(reporter, result);
    REPORTER_ASSERT(reporter, result->width() == 5 && result->height() == 10);
 
    SkBitmap resultBM;
 
    REPORTER_ASSERT(reporter, special_image_to_bitmap(dContext, result.get(), &resultBM));
 
    for (int y = 0; y < resultBM.height(); y++) {
        for (int x = 0; x < resultBM.width(); x++) {
            bool diff = *resultBM.getAddr32(x, y) != SK_ColorGREEN;
            REPORTER_ASSERT(reporter, !diff);
            if (diff) {
                break;
            }
        }
    }
}

Variable Documentation

kBitmapSize

const int kBitmapSize = 4

static

Definition at line 93 of file ImageFilterTest.cpp.