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skia2/tests/ImageFilterTest.cpp
Brian Osman a50205fca5 Add color type to the image filter DAG's OutputProperties 
Don't try to guess the pixel config to use for intermediates. Instead,
just make the intermediates in the same color type (and space) as the
final destination. This removes some no-longer-correct logic that was
using sRGB configs, resulting in linear blending and precision loss.

Change-Id: I627c47193a9f2889c3dc121170ff3e7d5d315fa0
Reviewed-on: https://skia-review.googlesource.com/139547
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2018-07-06 18:34:58 +00:00

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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkArithmeticImageFilter.h"
#include "SkBitmap.h"
#include "SkBlurImageFilter.h"
#include "SkCanvas.h"
#include "SkColorFilterImageFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkColorSpaceXformer.h"
#include "SkComposeImageFilter.h"
#include "SkDisplacementMapEffect.h"
#include "SkDropShadowImageFilter.h"
#include "SkGradientShader.h"
#include "SkImage.h"
#include "SkImageFilterPriv.h"
#include "SkImageSource.h"
#include "SkLightingImageFilter.h"
#include "SkMatrixConvolutionImageFilter.h"
#include "SkMergeImageFilter.h"
#include "SkMorphologyImageFilter.h"
#include "SkOffsetImageFilter.h"
#include "SkPaintImageFilter.h"
#include "SkPerlinNoiseShader.h"
#include "SkPicture.h"
#include "SkPictureImageFilter.h"
#include "SkPictureRecorder.h"
#include "SkPoint3.h"
#include "SkReadBuffer.h"
#include "SkRect.h"
#include "SkSpecialImage.h"
#include "SkSpecialSurface.h"
#include "SkSurface.h"
#include "SkTableColorFilter.h"
#include "SkTileImageFilter.h"
#include "SkXfermodeImageFilter.h"
#include "Resources.h"
#include "Test.h"
#include "sk_tool_utils.h"
#include "GrCaps.h"
#include "GrContext.h"
#include "GrContextPriv.h"
static const int kBitmapSize = 4;
namespace {
class MatrixTestImageFilter : public SkImageFilter {
public:
static sk_sp<SkImageFilter> Make(skiatest::Reporter* reporter,
const SkMatrix& expectedMatrix) {
return sk_sp<SkImageFilter>(new MatrixTestImageFilter(reporter, expectedMatrix));
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(MatrixTestImageFilter)
protected:
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context& ctx,
SkIPoint* offset) const override {
REPORTER_ASSERT(fReporter, ctx.ctm() == fExpectedMatrix);
offset->fX = offset->fY = 0;
return sk_ref_sp<SkSpecialImage>(source);
}
sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override {
return sk_ref_sp(const_cast<MatrixTestImageFilter*>(this));
}
void flatten(SkWriteBuffer& buffer) const override {
SkDEBUGFAIL("Should never get here");
}
private:
MatrixTestImageFilter(skiatest::Reporter* reporter, const SkMatrix& expectedMatrix)
: INHERITED(nullptr, 0, nullptr)
, fReporter(reporter)
, fExpectedMatrix(expectedMatrix) {
}
skiatest::Reporter* fReporter;
SkMatrix fExpectedMatrix;
typedef SkImageFilter INHERITED;
};
class FailImageFilter : public SkImageFilter {
public:
FailImageFilter() : SkImageFilter(nullptr, 0, nullptr) { }
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source,
const Context& ctx,
SkIPoint* offset) const override {
return nullptr;
}
sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override {
return nullptr;
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
private:
typedef SkImageFilter INHERITED;
};
sk_sp<SkFlattenable> FailImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
return sk_sp<SkFlattenable>(new FailImageFilter());
}
void draw_gradient_circle(SkCanvas* canvas, int width, int height) {
SkScalar x = SkIntToScalar(width / 2);
SkScalar y = SkIntToScalar(height / 2);
SkScalar radius = SkMinScalar(x, y) * 0.8f;
canvas->clear(0x00000000);
SkColor colors[2];
colors[0] = SK_ColorWHITE;
colors[1] = SK_ColorBLACK;
sk_sp<SkShader> shader(
SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
SkShader::kClamp_TileMode)
);
SkPaint paint;
paint.setShader(shader);
canvas->drawCircle(x, y, radius, paint);
}
SkBitmap make_gradient_circle(int width, int height) {
SkBitmap bitmap;
bitmap.allocN32Pixels(width, height);
SkCanvas canvas(bitmap);
draw_gradient_circle(&canvas, width, height);
return bitmap;
}
class FilterList {
public:
FilterList(sk_sp<SkImageFilter> input, const SkImageFilter::CropRect* cropRect = nullptr) {
SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
const SkScalar five = SkIntToScalar(5);
{
sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorRED,
SkBlendMode::kSrcIn));
this->addFilter("color filter",
SkColorFilterImageFilter::Make(std::move(cf), input, cropRect));
}
{
sk_sp<SkImage> gradientImage(SkImage::MakeFromBitmap(make_gradient_circle(64, 64)));
sk_sp<SkImageFilter> gradientSource(SkImageSource::Make(std::move(gradientImage)));
this->addFilter("displacement map",
SkDisplacementMapEffect::Make(SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
20.0f,
std::move(gradientSource), input, cropRect));
}
this->addFilter("blur", SkBlurImageFilter::Make(SK_Scalar1,
SK_Scalar1,
input,
cropRect));
this->addFilter("drop shadow", SkDropShadowImageFilter::Make(
SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_ColorGREEN,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
input, cropRect));
this->addFilter("diffuse lighting",
SkLightingImageFilter::MakePointLitDiffuse(location, SK_ColorGREEN, 0, 0,
input, cropRect));
this->addFilter("specular lighting",
SkLightingImageFilter::MakePointLitSpecular(location, SK_ColorGREEN, 0, 0, 0,
input, cropRect));
{
SkScalar kernel[9] = {
SkIntToScalar(1), SkIntToScalar(1), SkIntToScalar(1),
SkIntToScalar(1), SkIntToScalar(-7), SkIntToScalar(1),
SkIntToScalar(1), SkIntToScalar(1), SkIntToScalar(1),
};
const SkISize kernelSize = SkISize::Make(3, 3);
const SkScalar gain = SK_Scalar1, bias = 0;
// This filter needs a saveLayer bc it is in repeat mode
this->addFilter("matrix convolution",
SkMatrixConvolutionImageFilter::Make(
kernelSize, kernel, gain, bias, SkIPoint::Make(1, 1),
SkMatrixConvolutionImageFilter::kRepeat_TileMode, false,
input, cropRect),
true);
}
this->addFilter("merge", SkMergeImageFilter::Make(input, input, cropRect));
{
SkPaint greenColorShaderPaint;
greenColorShaderPaint.setShader(SkShader::MakeColorShader(SK_ColorGREEN));
SkImageFilter::CropRect leftSideCropRect(SkRect::MakeXYWH(0, 0, 32, 64));
sk_sp<SkImageFilter> paintFilterLeft(SkPaintImageFilter::Make(greenColorShaderPaint,
&leftSideCropRect));
SkImageFilter::CropRect rightSideCropRect(SkRect::MakeXYWH(32, 0, 32, 64));
sk_sp<SkImageFilter> paintFilterRight(SkPaintImageFilter::Make(greenColorShaderPaint,
&rightSideCropRect));
this->addFilter("merge with disjoint inputs", SkMergeImageFilter::Make(
std::move(paintFilterLeft), std::move(paintFilterRight), cropRect));
}
this->addFilter("offset",
SkOffsetImageFilter::Make(SK_Scalar1, SK_Scalar1, input,
cropRect));
this->addFilter("dilate", SkDilateImageFilter::Make(3, 2, input, cropRect));
this->addFilter("erode", SkErodeImageFilter::Make(2, 3, input, cropRect));
this->addFilter("tile", SkTileImageFilter::Make(
SkRect::MakeXYWH(0, 0, 50, 50),
cropRect ? cropRect->rect() : SkRect::MakeXYWH(0, 0, 100, 100),
input));
if (!cropRect) {
SkMatrix matrix;
matrix.setTranslate(SK_Scalar1, SK_Scalar1);
matrix.postRotate(SkIntToScalar(45), SK_Scalar1, SK_Scalar1);
this->addFilter("matrix",
SkImageFilter::MakeMatrixFilter(matrix, kLow_SkFilterQuality, input));
}
{
sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(five, five, input));
this->addFilter("blur and offset", SkOffsetImageFilter::Make(five, five,
std::move(blur),
cropRect));
}
{
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());
sk_sp<SkImageFilter> pictureFilter(SkPictureImageFilter::Make(std::move(picture)));
this->addFilter("picture and blur", SkBlurImageFilter::Make(five, five,
std::move(pictureFilter),
cropRect));
}
{
SkPaint paint;
paint.setShader(SkPerlinNoiseShader::MakeTurbulence(SK_Scalar1, SK_Scalar1, 1, 0));
sk_sp<SkImageFilter> paintFilter(SkPaintImageFilter::Make(paint));
this->addFilter("paint and blur", SkBlurImageFilter::Make(five, five,
std::move(paintFilter),
cropRect));
}
this->addFilter("xfermode", SkXfermodeImageFilter::Make(SkBlendMode::kSrc, input, input,
cropRect));
}
int count() const { return fFilters.count(); }
SkImageFilter* getFilter(int index) const { return fFilters[index].fFilter.get(); }
const char* getName(int index) const { return fFilters[index].fName; }
bool needsSaveLayer(int index) const { return fFilters[index].fNeedsSaveLayer; }
private:
struct Filter {
Filter() : fName(nullptr), fNeedsSaveLayer(false) {}
Filter(const char* name, sk_sp<SkImageFilter> filter, bool needsSaveLayer)
: fName(name)
, fFilter(std::move(filter))
, fNeedsSaveLayer(needsSaveLayer) {
}
const char* fName;
sk_sp<SkImageFilter> fFilter;
bool fNeedsSaveLayer;
};
void addFilter(const char* name, sk_sp<SkImageFilter> filter, bool needsSaveLayer = false) {
fFilters.push_back(Filter(name, std::move(filter), needsSaveLayer));
}
SkTArray<Filter> fFilters;
};
class FixedBoundsImageFilter : public SkImageFilter {
public:
FixedBoundsImageFilter(const SkIRect& bounds)
: SkImageFilter(nullptr, 0, nullptr), fBounds(bounds) {}
private:
Factory getFactory() const override { return nullptr; }
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* src, const Context&,
SkIPoint* offset) const override {
return nullptr;
}
sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override { return nullptr; }
SkIRect onFilterBounds(const SkIRect&, const SkMatrix&,
MapDirection, const SkIRect*) const override {
return fBounds;
}
SkIRect fBounds;
};
}
sk_sp<SkFlattenable> MatrixTestImageFilter::CreateProc(SkReadBuffer& buffer) {
SkDEBUGFAIL("Should never get here");
return nullptr;
}
static sk_sp<SkImage> make_small_image() {
auto surface(SkSurface::MakeRasterN32Premul(kBitmapSize, kBitmapSize));
SkCanvas* canvas = surface->getCanvas();
canvas->clear(0x00000000);
SkPaint darkPaint;
darkPaint.setColor(0xFF804020);
SkPaint lightPaint;
lightPaint.setColor(0xFF244484);
const int i = kBitmapSize / 4;
for (int y = 0; y < kBitmapSize; y += i) {
for (int x = 0; x < kBitmapSize; x += i) {
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->drawRect(SkRect::MakeXYWH(0, 0,
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas->drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
0,
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas->drawRect(SkRect::MakeXYWH(0,
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas->drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas->restore();
}
}
return surface->makeImageSnapshot();
}
static sk_sp<SkImageFilter> make_scale(float amount, sk_sp<SkImageFilter> input) {
SkScalar s = amount;
SkScalar 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(SkColorFilter::MakeMatrixFilterRowMajor255(matrix));
return SkColorFilterImageFilter::Make(std::move(filter), std::move(input));
}
static sk_sp<SkImageFilter> make_grayscale(sk_sp<SkImageFilter> input,
const SkImageFilter::CropRect* cropRect) {
SkScalar matrix[20];
memset(matrix, 0, 20 * sizeof(SkScalar));
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(SkColorFilter::MakeMatrixFilterRowMajor255(matrix));
return SkColorFilterImageFilter::Make(std::move(filter), std::move(input), cropRect);
}
static sk_sp<SkImageFilter> make_blue(sk_sp<SkImageFilter> input,
const SkImageFilter::CropRect* cropRect) {
sk_sp<SkColorFilter> filter(SkColorFilter::MakeModeFilter(SK_ColorBLUE,
SkBlendMode::kSrcIn));
return SkColorFilterImageFilter::Make(std::move(filter), std::move(input), cropRect);
}
static sk_sp<SkSpecialSurface> create_empty_special_surface(GrContext* context, int widthHeight) {
if (context) {
return SkSpecialSurface::MakeRenderTarget(context,
widthHeight, widthHeight,
kRGBA_8888_GrPixelConfig, nullptr);
} else {
const SkImageInfo info = SkImageInfo::MakeN32(widthHeight, widthHeight,
kOpaque_SkAlphaType);
return SkSpecialSurface::MakeRaster(info);
}
}
static sk_sp<SkSurface> create_surface(GrContext* context, int width, int height) {
const SkImageInfo info = SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType);
if (context) {
return SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info);
} else {
return SkSurface::MakeRaster(info);
}
}
static sk_sp<SkSpecialImage> create_empty_special_image(GrContext* context, int widthHeight) {
sk_sp<SkSpecialSurface> surf(create_empty_special_surface(context, widthHeight));
SkASSERT(surf);
SkCanvas* canvas = surf->getCanvas();
SkASSERT(canvas);
canvas->clear(0x0);
return surf->makeImageSnapshot();
}
DEF_TEST(ImageFilter, reporter) {
{
// Check that two non-clipping color-matrice-filters concatenate into a single filter.
sk_sp<SkImageFilter> halfBrightness(make_scale(0.5f, nullptr));
sk_sp<SkImageFilter> quarterBrightness(make_scale(0.5f, std::move(halfBrightness)));
REPORTER_ASSERT(reporter, nullptr == quarterBrightness->getInput(0));
SkColorFilter* cf;
REPORTER_ASSERT(reporter, quarterBrightness->asColorFilter(&cf));
REPORTER_ASSERT(reporter, cf->asColorMatrix(nullptr));
cf->unref();
}
{
// Check that a clipping color-matrice-filter followed by a color-matrice-filters
// concatenates into a single filter, but not a matrixfilter (due to clamping).
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));
REPORTER_ASSERT(reporter, !cf->asColorMatrix(nullptr));
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.
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(0, 0, 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.
SkScalar blueToRedMatrix[20] = { 0 };
blueToRedMatrix[2] = blueToRedMatrix[18] = SK_Scalar1;
SkScalar redToGreenMatrix[20] = { 0 };
redToGreenMatrix[5] = redToGreenMatrix[18] = SK_Scalar1;
sk_sp<SkColorFilter> blueToRed(SkColorFilter::MakeMatrixFilterRowMajor255(blueToRedMatrix));
sk_sp<SkImageFilter> filter1(SkColorFilterImageFilter::Make(std::move(blueToRed),
nullptr));
sk_sp<SkColorFilter> redToGreen(SkColorFilter::MakeMatrixFilterRowMajor255(redToGreenMatrix));
sk_sp<SkImageFilter> filter2(SkColorFilterImageFilter::Make(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(SkImageSource::Make(std::move(image)));
SkPaint paint;
paint.setImageFilter(SkLightingImageFilter::MakeSpotLitSpecular(
location, target, specularExponent, 180,
0xFFFFFFFF, SK_Scalar1, SK_Scalar1, SK_Scalar1,
std::move(bmSrc)));
SkCanvas canvas(result);
SkRect r = SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize));
canvas.drawRect(r, paint);
}
}
}
static void test_crop_rects(skiatest::Reporter* reporter,
GrContext* context) {
// 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(context, 100));
SkASSERT(srcImg);
SkImageFilter::CropRect inputCropRect(SkRect::MakeXYWH(8, 13, 80, 80));
SkImageFilter::CropRect cropRect(SkRect::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;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, resultImg, filters.getName(i));
REPORTER_ASSERT(reporter, offset.fX == 20 && offset.fY == 30, filters.getName(i));
}
}
static void test_negative_blur_sigma(skiatest::Reporter* reporter,
GrContext* context) {
// Check that SkBlurImageFilter will accept a negative sigma, either in
// the given arguments or after CTM application.
const int width = 32, height = 32;
const SkScalar five = SkIntToScalar(5);
sk_sp<SkImageFilter> positiveFilter(SkBlurImageFilter::Make(five, five, nullptr));
sk_sp<SkImageFilter> negativeFilter(SkBlurImageFilter::Make(-five, five, nullptr));
SkBitmap gradient = make_gradient_circle(width, height);
sk_sp<SkSpecialImage> imgSrc(SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(width, height),
gradient));
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(32, 32), nullptr, noColorSpace);
sk_sp<SkSpecialImage> positiveResult1(positiveFilter->filterImage(imgSrc.get(), ctx, &offset));
REPORTER_ASSERT(reporter, positiveResult1);
sk_sp<SkSpecialImage> negativeResult1(negativeFilter->filterImage(imgSrc.get(), ctx, &offset));
REPORTER_ASSERT(reporter, negativeResult1);
SkMatrix negativeScale;
negativeScale.setScale(-SK_Scalar1, SK_Scalar1);
SkImageFilter::Context negativeCTX(negativeScale, SkIRect::MakeWH(32, 32), nullptr,
noColorSpace);
sk_sp<SkSpecialImage> negativeResult2(positiveFilter->filterImage(imgSrc.get(),
negativeCTX,
&offset));
REPORTER_ASSERT(reporter, negativeResult2);
sk_sp<SkSpecialImage> positiveResult2(negativeFilter->filterImage(imgSrc.get(),
negativeCTX,
&offset));
REPORTER_ASSERT(reporter, positiveResult2);
SkBitmap positiveResultBM1, positiveResultBM2;
SkBitmap negativeResultBM1, negativeResultBM2;
REPORTER_ASSERT(reporter, positiveResult1->getROPixels(&positiveResultBM1));
REPORTER_ASSERT(reporter, positiveResult2->getROPixels(&positiveResultBM2));
REPORTER_ASSERT(reporter, negativeResult1->getROPixels(&negativeResultBM1));
REPORTER_ASSERT(reporter, negativeResult2->getROPixels(&negativeResultBM2));
for (int y = 0; y < height; y++) {
int diffs = memcmp(positiveResultBM1.getAddr32(0, y),
negativeResultBM1.getAddr32(0, y),
positiveResultBM1.rowBytes());
REPORTER_ASSERT(reporter, !diffs);
if (diffs) {
break;
}
diffs = memcmp(positiveResultBM1.getAddr32(0, y),
negativeResultBM2.getAddr32(0, y),
positiveResultBM1.rowBytes());
REPORTER_ASSERT(reporter, !diffs);
if (diffs) {
break;
}
diffs = memcmp(positiveResultBM1.getAddr32(0, y),
positiveResultBM2.getAddr32(0, y),
positiveResultBM1.rowBytes());
REPORTER_ASSERT(reporter, !diffs);
if (diffs) {
break;
}
}
}
DEF_TEST(ImageFilterNegativeBlurSigma, reporter) {
test_negative_blur_sigma(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterNegativeBlurSigma_Gpu, reporter, ctxInfo) {
test_negative_blur_sigma(reporter, ctxInfo.grContext());
}
static void test_zero_blur_sigma(skiatest::Reporter* reporter, GrContext* context) {
// Check that SkBlurImageFilter with a zero sigma and a non-zero srcOffset works correctly.
SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(5, 0, 5, 10)));
sk_sp<SkImageFilter> input(SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect));
sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(0, 0, std::move(input), &cropRect));
sk_sp<SkSpecialSurface> surf(create_empty_special_surface(context, 10));
surf->getCanvas()->clear(SK_ColorGREEN);
sk_sp<SkSpecialImage> image(surf->makeImageSnapshot());
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(32, 32), nullptr, noColorSpace);
sk_sp<SkSpecialImage> result(filter->filterImage(image.get(), 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, result->getROPixels(&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;
}
}
}
}
DEF_TEST(ImageFilterZeroBlurSigma, reporter) {
test_zero_blur_sigma(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterZeroBlurSigma_Gpu, reporter, ctxInfo) {
test_zero_blur_sigma(reporter, ctxInfo.grContext());
}
// Tests that, even when an upstream filter has returned null (due to failure or clipping), a
// downstream filter that affects transparent black still does so even with a nullptr input.
static void test_fail_affects_transparent_black(skiatest::Reporter* reporter, GrContext* context) {
sk_sp<FailImageFilter> failFilter(new FailImageFilter());
sk_sp<SkSpecialImage> source(create_empty_special_image(context, 5));
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(0, 0, 1, 1), nullptr, noColorSpace);
sk_sp<SkColorFilter> green(SkColorFilter::MakeModeFilter(SK_ColorGREEN, SkBlendMode::kSrc));
SkASSERT(green->affectsTransparentBlack());
sk_sp<SkImageFilter> greenFilter(SkColorFilterImageFilter::Make(std::move(green),
std::move(failFilter)));
SkIPoint offset;
sk_sp<SkSpecialImage> result(greenFilter->filterImage(source.get(), ctx, &offset));
REPORTER_ASSERT(reporter, nullptr != result.get());
if (result.get()) {
SkBitmap resultBM;
REPORTER_ASSERT(reporter, result->getROPixels(&resultBM));
REPORTER_ASSERT(reporter, *resultBM.getAddr32(0, 0) == SK_ColorGREEN);
}
}
DEF_TEST(ImageFilterFailAffectsTransparentBlack, reporter) {
test_fail_affects_transparent_black(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterFailAffectsTransparentBlack_Gpu, reporter, ctxInfo) {
test_fail_affects_transparent_black(reporter, ctxInfo.grContext());
}
DEF_TEST(ImageFilterDrawTiled, reporter) {
// 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.setTextSize(SkIntToScalar(height));
textPaint.setColor(SK_ColorWHITE);
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.setTextSize(SkIntToScalar(height));
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, combinedPaint);
untiledCanvas.restore();
untiledCanvas.flush();
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)) {
const SkRect layerBounds = SkRect::MakeWH(width, height);
tiledCanvas.saveLayer(&layerBounds, &combinedPaint);
tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
tiledCanvas.drawString(text, 0, yPos, textPaint);
tiledCanvas.restore();
} else {
tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
tiledCanvas.drawString(text, 0, yPos, combinedPaint);
}
tiledCanvas.restore();
}
}
tiledCanvas.flush();
if (!sk_tool_utils::equal_pixels(untiledResult, tiledResult, 1)) {
REPORTER_ASSERT(reporter, false, filters.getName(i));
break;
}
}
}
}
static void draw_saveLayer_picture(int width, int height, int tileSize,
SkBBHFactory* factory, SkBitmap* result) {
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(50), 0);
sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorWHITE, SkBlendMode::kSrc));
sk_sp<SkImageFilter> cfif(SkColorFilterImageFilter::Make(std::move(cf), nullptr));
sk_sp<SkImageFilter> imageFilter(SkImageFilter::MakeMatrixFilter(matrix,
kNone_SkFilterQuality,
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, 0);
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());
}
DEF_TEST(ImageFilterDrawMatrixBBH, reporter) {
// 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;
}
}
}
static sk_sp<SkImageFilter> make_blur(sk_sp<SkImageFilter> input) {
return SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1, std::move(input));
}
static sk_sp<SkImageFilter> make_drop_shadow(sk_sp<SkImageFilter> input) {
return SkDropShadowImageFilter::Make(
SkIntToScalar(100), SkIntToScalar(100),
SkIntToScalar(10), SkIntToScalar(10),
SK_ColorBLUE, SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
std::move(input));
}
DEF_TEST(ImageFilterBlurThenShadowBounds, reporter) {
sk_sp<SkImageFilter> filter1(make_blur(nullptr));
sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
SkIRect expectedBounds = SkIRect::MakeXYWH(-133, -133, 236, 236);
bounds = filter2->filterBounds(bounds, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter, bounds == expectedBounds);
}
DEF_TEST(ImageFilterShadowThenBlurBounds, reporter) {
sk_sp<SkImageFilter> filter1(make_drop_shadow(nullptr));
sk_sp<SkImageFilter> filter2(make_blur(std::move(filter1)));
SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
SkIRect expectedBounds = SkIRect::MakeXYWH(-133, -133, 236, 236);
bounds = filter2->filterBounds(bounds, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter, bounds == expectedBounds);
}
DEF_TEST(ImageFilterDilateThenBlurBounds, reporter) {
sk_sp<SkImageFilter> filter1(SkDilateImageFilter::Make(2, 2, nullptr));
sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
SkIRect expectedBounds = SkIRect::MakeXYWH(-132, -132, 234, 234);
bounds = filter2->filterBounds(bounds, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter, bounds == expectedBounds);
}
DEF_TEST(ImageFilterScaledBlurRadius, reporter) {
// 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);
SkIRect bounds = SkIRect::MakeLTRB(0, 0, 200, 200);
SkIRect expectedBlurBounds = SkIRect::MakeLTRB(-6, -6, 206, 206);
SkIRect blurBounds = blur->filterBounds(
bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, blurBounds == expectedBlurBounds);
SkIRect reverseBlurBounds = blur->filterBounds(
bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter, reverseBlurBounds == expectedBlurBounds);
SkIRect expectedShadowBounds = SkIRect::MakeLTRB(0, 0, 460, 460);
SkIRect shadowBounds = dropShadow->filterBounds(
bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, shadowBounds == expectedShadowBounds);
SkIRect expectedReverseShadowBounds =
SkIRect::MakeLTRB(-260, -260, 200, 200);
SkIRect reverseShadowBounds = dropShadow->filterBounds(
bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter,
reverseShadowBounds == expectedReverseShadowBounds);
}
{
// Vertical flip.
SkMatrix scaleMatrix;
scaleMatrix.setScale(1, -1);
SkIRect bounds = SkIRect::MakeLTRB(0, -100, 100, 0);
SkIRect expectedBlurBounds = SkIRect::MakeLTRB(-3, -103, 103, 3);
SkIRect blurBounds = blur->filterBounds(
bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, blurBounds == expectedBlurBounds);
SkIRect reverseBlurBounds = blur->filterBounds(
bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter, reverseBlurBounds == expectedBlurBounds);
SkIRect expectedShadowBounds = SkIRect::MakeLTRB(0, -230, 230, 0);
SkIRect shadowBounds = dropShadow->filterBounds(
bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, shadowBounds == expectedShadowBounds);
SkIRect expectedReverseShadowBounds =
SkIRect::MakeLTRB(-130, -100, 100, 130);
SkIRect reverseShadowBounds = dropShadow->filterBounds(
bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
REPORTER_ASSERT(reporter,
reverseShadowBounds == expectedReverseShadowBounds);
}
}
DEF_TEST(ImageFilterComposedBlurFastBounds, reporter) {
sk_sp<SkImageFilter> filter1(make_blur(nullptr));
sk_sp<SkImageFilter> filter2(make_blur(nullptr));
sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(filter1),
std::move(filter2)));
SkRect boundsSrc = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
SkRect expectedBounds = SkRect::MakeXYWH(
SkIntToScalar(-6), SkIntToScalar(-6), SkIntToScalar(112), SkIntToScalar(112));
SkRect boundsDst = composedFilter->computeFastBounds(boundsSrc);
REPORTER_ASSERT(reporter, boundsDst == expectedBounds);
}
DEF_TEST(ImageFilterUnionBounds, reporter) {
sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(50, 0, nullptr));
// Regardless of which order they appear in, the image filter bounds should
// be combined correctly.
{
sk_sp<SkImageFilter> composite(SkXfermodeImageFilter::Make(SkBlendMode::kSrcOver, offset));
SkRect bounds = SkRect::MakeWH(100, 100);
// Intentionally aliasing here, as that's what the real callers do.
bounds = composite->computeFastBounds(bounds);
REPORTER_ASSERT(reporter, bounds == SkRect::MakeWH(150, 100));
}
{
sk_sp<SkImageFilter> composite(SkXfermodeImageFilter::Make(SkBlendMode::kSrcOver, nullptr,
offset, nullptr));
SkRect bounds = SkRect::MakeWH(100, 100);
// Intentionally aliasing here, as that's what the real callers do.
bounds = composite->computeFastBounds(bounds);
REPORTER_ASSERT(reporter, bounds == SkRect::MakeWH(150, 100));
}
}
static void test_imagefilter_merge_result_size(skiatest::Reporter* reporter, GrContext* context) {
SkBitmap greenBM;
greenBM.allocN32Pixels(20, 20);
greenBM.eraseColor(SK_ColorGREEN);
sk_sp<SkImage> greenImage(SkImage::MakeFromBitmap(greenBM));
sk_sp<SkImageFilter> source(SkImageSource::Make(std::move(greenImage)));
sk_sp<SkImageFilter> merge(SkMergeImageFilter::Make(source, source));
sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 1));
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(0, 0, 100, 100), nullptr,
noColorSpace);
SkIPoint offset;
sk_sp<SkSpecialImage> resultImg(merge->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, resultImg);
REPORTER_ASSERT(reporter, resultImg->width() == 20 && resultImg->height() == 20);
}
DEF_TEST(ImageFilterMergeResultSize, reporter) {
test_imagefilter_merge_result_size(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMergeResultSize_Gpu, reporter, ctxInfo) {
test_imagefilter_merge_result_size(reporter, ctxInfo.grContext());
}
static void draw_blurred_rect(SkCanvas* canvas) {
SkPaint filterPaint;
filterPaint.setColor(SK_ColorWHITE);
filterPaint.setImageFilter(SkBlurImageFilter::Make(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();
}
static void draw_picture_clipped(SkCanvas* canvas, const SkRect& clipRect, const SkPicture* picture) {
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPicture(picture);
canvas->restore();
}
DEF_TEST(ImageFilterDrawTiledBlurRTree, reporter) {
// 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(SkIntToScalar(width),
SkIntToScalar(height),
nullptr, 0);
SkCanvas* recordingCanvas2 = recorder2.beginRecording(SkIntToScalar(width),
SkIntToScalar(height),
&factory, 0);
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(ImageFilterMatrixConvolution, reporter) {
// 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(SkMatrixConvolutionImageFilter::Make(
kernelSize, kernel,
gain, bias, kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode,
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(ImageFilterMatrixConvolutionBorder, reporter) {
// 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(SkMatrixConvolutionImageFilter::Make(
kernelSize, kernel, gain, bias, kernelOffset,
SkMatrixConvolutionImageFilter::kClamp_TileMode,
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::MakeWH(1, 10);
SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
SkPaint rectPaint;
canvas.saveLayer(&bounds, &filterPaint);
canvas.drawRect(rect, rectPaint);
canvas.restore();
}
static void test_big_kernel(skiatest::Reporter* reporter, GrContext* context) {
// 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(SkMatrixConvolutionImageFilter::Make(
kernelSize, identityKernel, gain, bias, kernelOffset,
SkMatrixConvolutionImageFilter::kClamp_TileMode,
true, nullptr));
sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
SkASSERT(srcImg);
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, resultImg);
REPORTER_ASSERT(reporter, SkToBool(context) == resultImg->isTextureBacked());
REPORTER_ASSERT(reporter, resultImg->width() == 100 && resultImg->height() == 100);
REPORTER_ASSERT(reporter, offset.fX == 0 && offset.fY == 0);
}
DEF_TEST(ImageFilterMatrixConvolutionBigKernel, reporter) {
test_big_kernel(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMatrixConvolutionBigKernel_Gpu,
reporter, ctxInfo) {
test_big_kernel(reporter, ctxInfo.grContext());
}
DEF_TEST(ImageFilterCropRect, reporter) {
test_crop_rects(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterCropRect_Gpu, reporter, ctxInfo) {
test_crop_rects(reporter, ctxInfo.grContext());
}
DEF_TEST(ImageFilterMatrix, reporter) {
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, 0);
SkPaint paint;
paint.setImageFilter(MatrixTestImageFilter::Make(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());
}
static void test_clipped_picture_imagefilter(skiatest::Reporter* reporter, GrContext* context) {
sk_sp<SkPicture> picture;
{
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(1, 1, &factory, 0);
// 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(context, 2));
sk_sp<SkImageFilter> imageFilter(SkPictureImageFilter::Make(picture));
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(1, 1, 1, 1), nullptr, noColorSpace);
sk_sp<SkSpecialImage> resultImage(imageFilter->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, !resultImage);
}
DEF_TEST(ImageFilterClippedPictureImageFilter, reporter) {
test_clipped_picture_imagefilter(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterClippedPictureImageFilter_Gpu, reporter, ctxInfo) {
test_clipped_picture_imagefilter(reporter, ctxInfo.grContext());
}
DEF_TEST(ImageFilterEmptySaveLayer, reporter) {
// 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(SkColorFilter::MakeModeFilter(SK_ColorGREEN,
SkBlendMode::kSrc));
sk_sp<SkImageFilter> imageFilter(SkColorFilterImageFilter::Make(green, nullptr));
SkPaint imageFilterPaint;
imageFilterPaint.setImageFilter(std::move(imageFilter));
SkPaint colorFilterPaint;
colorFilterPaint.setColorFilter(green);
SkRect bounds = SkRect::MakeWH(10, 10);
SkCanvas* recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
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, 0);
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, 0);
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);
}
static void test_huge_blur(SkCanvas* canvas, skiatest::Reporter* reporter) {
SkBitmap bitmap;
bitmap.allocN32Pixels(100, 100);
bitmap.eraseARGB(0, 0, 0, 0);
// Check that a blur with an insane radius does not crash or assert.
SkPaint paint;
paint.setImageFilter(SkBlurImageFilter::Make(SkIntToScalar(1<<30),
SkIntToScalar(1<<30),
nullptr));
canvas->drawBitmap(bitmap, 0, 0, &paint);
}
DEF_TEST(HugeBlurImageFilter, reporter) {
SkBitmap temp;
temp.allocN32Pixels(100, 100);
SkCanvas canvas(temp);
test_huge_blur(&canvas, reporter);
}
DEF_TEST(ImageFilterMatrixConvolutionSanityTest, reporter) {
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(SkMatrixConvolutionImageFilter::Make(
SkISize::Make(1<<30, 1<<30),
kernel,
gain,
bias,
kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode,
false,
nullptr));
REPORTER_ASSERT(reporter, nullptr == conv.get());
// Check that a nullptr kernel gives a nullptr filter.
conv = SkMatrixConvolutionImageFilter::Make(
SkISize::Make(1, 1),
nullptr,
gain,
bias,
kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode,
false,
nullptr);
REPORTER_ASSERT(reporter, nullptr == conv.get());
// Check that a kernel width < 1 gives a nullptr filter.
conv = SkMatrixConvolutionImageFilter::Make(
SkISize::Make(0, 1),
kernel,
gain,
bias,
kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode,
false,
nullptr);
REPORTER_ASSERT(reporter, nullptr == conv.get());
// Check that kernel height < 1 gives a nullptr filter.
conv = SkMatrixConvolutionImageFilter::Make(
SkISize::Make(1, -1),
kernel,
gain,
bias,
kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode,
false,
nullptr);
REPORTER_ASSERT(reporter, nullptr == conv.get());
}
static void test_xfermode_cropped_input(SkSurface* surf, skiatest::Reporter* reporter) {
auto canvas = surf->getCanvas();
canvas->clear(0);
SkBitmap bitmap;
bitmap.allocN32Pixels(1, 1);
bitmap.eraseARGB(255, 255, 255, 255);
sk_sp<SkColorFilter> green(SkColorFilter::MakeModeFilter(SK_ColorGREEN,
SkBlendMode::kSrcIn));
sk_sp<SkImageFilter> greenFilter(SkColorFilterImageFilter::Make(green, nullptr));
SkImageFilter::CropRect cropRect(SkRect::MakeEmpty());
sk_sp<SkImageFilter> croppedOut(SkColorFilterImageFilter::Make(green, nullptr, &cropRect));
// Check that an xfermode 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(SkXfermodeImageFilter::Make(mode, greenFilter,
croppedOut, nullptr));
sk_sp<SkImageFilter> xfermodeNoBg(SkXfermodeImageFilter::Make(mode, croppedOut,
greenFilter, nullptr));
sk_sp<SkImageFilter> xfermodeNoFgNoBg(SkXfermodeImageFilter::Make(mode, croppedOut,
croppedOut, nullptr));
SkPaint paint;
paint.setImageFilter(std::move(xfermodeNoFg));
canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
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);
paint.setImageFilter(std::move(xfermodeNoBg));
canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
surf->readPixels(info, &pixel, 4, 0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
paint.setImageFilter(std::move(xfermodeNoFgNoBg));
canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
surf->readPixels(info, &pixel, 4, 0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
DEF_TEST(ImageFilterNestedSaveLayer, reporter) {
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(
SkImageFilter::MakeMatrixFilter(matrix, kLow_SkFilterQuality, 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.drawBitmap(bitmap, 20, 20, &filterPaint); // drawSprite
canvas.restore();
temp.readPixels(info, &pixel, 4, 25, 25);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
DEF_TEST(XfermodeImageFilterCroppedInput, reporter) {
test_xfermode_cropped_input(SkSurface::MakeRasterN32Premul(100, 100).get(), reporter);
}
static void test_composed_imagefilter_offset(skiatest::Reporter* reporter, GrContext* context) {
sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(1, 0, 20, 20));
sk_sp<SkImageFilter> offsetFilter(SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect));
sk_sp<SkImageFilter> blurFilter(SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1,
nullptr, &cropRect));
sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(blurFilter),
std::move(offsetFilter)));
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
sk_sp<SkSpecialImage> resultImg(composedFilter->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, resultImg);
REPORTER_ASSERT(reporter, offset.fX == 1 && offset.fY == 0);
}
DEF_TEST(ComposedImageFilterOffset, reporter) {
test_composed_imagefilter_offset(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ComposedImageFilterOffset_Gpu, reporter, ctxInfo) {
test_composed_imagefilter_offset(reporter, ctxInfo.grContext());
}
static void test_composed_imagefilter_bounds(skiatest::Reporter* reporter, GrContext* context) {
// 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::MakeWH(200, 100));
recordingCanvas->clipRect(SkRect::MakeXYWH(100, 0, 100, 100));
recordingCanvas->clear(SK_ColorGREEN);
sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
sk_sp<SkImageFilter> pictureFilter(SkPictureImageFilter::Make(picture));
SkImageFilter::CropRect cropRect(SkRect::MakeWH(100, 100));
sk_sp<SkImageFilter> offsetFilter(SkOffsetImageFilter::Make(-100, 0, nullptr, &cropRect));
sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(offsetFilter),
std::move(pictureFilter)));
sk_sp<SkSpecialImage> sourceImage(create_empty_special_image(context, 100));
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
SkIPoint offset;
sk_sp<SkSpecialImage> result(composedFilter->filterImage(sourceImage.get(), 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, result->getROPixels(&resultBM));
REPORTER_ASSERT(reporter, resultBM.getColor(50, 50) == SK_ColorGREEN);
}
DEF_TEST(ComposedImageFilterBounds, reporter) {
test_composed_imagefilter_bounds(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ComposedImageFilterBounds_Gpu, reporter, ctxInfo) {
test_composed_imagefilter_bounds(reporter, ctxInfo.grContext());
}
static void test_partial_crop_rect(skiatest::Reporter* reporter, GrContext* context) {
sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(100, 0, 20, 30),
SkImageFilter::CropRect::kHasWidth_CropEdge | SkImageFilter::CropRect::kHasHeight_CropEdge);
sk_sp<SkImageFilter> filter(make_grayscale(nullptr, &cropRect));
SkIPoint offset;
SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
REPORTER_ASSERT(reporter, resultImg);
REPORTER_ASSERT(reporter, offset.fX == 0);
REPORTER_ASSERT(reporter, offset.fY == 0);
REPORTER_ASSERT(reporter, resultImg->width() == 20);
REPORTER_ASSERT(reporter, resultImg->height() == 30);
}
DEF_TEST(ImageFilterPartialCropRect, reporter) {
test_partial_crop_rect(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterPartialCropRect_Gpu, reporter, ctxInfo) {
test_partial_crop_rect(reporter, ctxInfo.grContext());
}
DEF_TEST(ImageFilterCanComputeFastBounds, reporter) {
{
SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
sk_sp<SkImageFilter> lighting(SkLightingImageFilter::MakePointLitDiffuse(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, !grayCF->affectsTransparentBlack());
grayCF->unref();
}
REPORTER_ASSERT(reporter, gray->canComputeFastBounds());
sk_sp<SkImageFilter> grayBlur(SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1,
std::move(gray)));
REPORTER_ASSERT(reporter, grayBlur->canComputeFastBounds());
}
{
SkScalar greenMatrix[20] = { 0, 0, 0, 0, 0,
0, 0, 0, 0, 1,
0, 0, 0, 0, 0,
0, 0, 0, 0, 1 };
sk_sp<SkColorFilter> greenCF(SkColorFilter::MakeMatrixFilterRowMajor255(greenMatrix));
sk_sp<SkImageFilter> green(SkColorFilterImageFilter::Make(greenCF, nullptr));
REPORTER_ASSERT(reporter, greenCF->affectsTransparentBlack());
REPORTER_ASSERT(reporter, !green->canComputeFastBounds());
sk_sp<SkImageFilter> greenBlur(SkBlurImageFilter::Make(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(SkTableColorFilter::MakeARGB(identity, identity,
identity, allOne));
sk_sp<SkImageFilter> identityFilter(SkColorFilterImageFilter::Make(identityCF, nullptr));
REPORTER_ASSERT(reporter, !identityCF->affectsTransparentBlack());
REPORTER_ASSERT(reporter, identityFilter->canComputeFastBounds());
sk_sp<SkColorFilter> forceOpaqueCF(SkTableColorFilter::MakeARGB(allOne, identity,
identity, identity));
sk_sp<SkImageFilter> forceOpaque(SkColorFilterImageFilter::Make(forceOpaqueCF, nullptr));
REPORTER_ASSERT(reporter, forceOpaqueCF->affectsTransparentBlack());
REPORTER_ASSERT(reporter, !forceOpaque->canComputeFastBounds());
}
// Verify that SkImageSource survives serialization
DEF_TEST(ImageFilterImageSourceSerialization, reporter) {
auto surface(SkSurface::MakeRasterN32Premul(10, 10));
surface->getCanvas()->clear(SK_ColorGREEN);
sk_sp<SkImage> image(surface->makeImageSnapshot());
sk_sp<SkImageFilter> filter(SkImageSource::Make(std::move(image)));
sk_sp<SkData> data(filter->serialize());
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::MakeWH(10, 10), paint);
REPORTER_ASSERT(reporter, *bm.getAddr32(0, 0) == SkPreMultiplyColor(SK_ColorGREEN));
}
DEF_TEST(ImageFilterImageSourceUninitialized, r) {
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);
}
static void test_large_blur_input(skiatest::Reporter* reporter, SkCanvas* canvas) {
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 (GrContext* ctx = canvas->getGrContext()) {
largeW = ctx->contextPriv().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(SkImage::MakeFromBitmap(largeBmp));
if (!largeImage) {
ERRORF(reporter, "Failed to create large image.");
return;
}
sk_sp<SkImageFilter> largeSource(SkImageSource::Make(std::move(largeImage)));
if (!largeSource) {
ERRORF(reporter, "Failed to create large SkImageSource.");
return;
}
sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(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);
}
DEF_TEST(ImageFilterBlurLargeImage, reporter) {
auto surface(SkSurface::MakeRaster(SkImageInfo::MakeN32Premul(100, 100)));
test_large_blur_input(reporter, surface->getCanvas());
}
static void test_make_with_filter(skiatest::Reporter* reporter, GrContext* context) {
sk_sp<SkSurface> surface(create_surface(context, 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 = sourceImage->makeWithFilter(nullptr, subset, clipBounds, &outSubset, &offset);
REPORTER_ASSERT(reporter, !result);
result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, nullptr, &offset);
REPORTER_ASSERT(reporter, !result);
result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, &outSubset, nullptr);
REPORTER_ASSERT(reporter, !result);
SkIRect bigSubset = SkIRect::MakeXYWH(-10000, -10000, 20000, 20000);
result = sourceImage->makeWithFilter(filter.get(), bigSubset, clipBounds, &outSubset, &offset);
REPORTER_ASSERT(reporter, !result);
SkIRect empty = SkIRect::MakeEmpty();
result = sourceImage->makeWithFilter(filter.get(), empty, clipBounds, &outSubset, &offset);
REPORTER_ASSERT(reporter, !result);
result = sourceImage->makeWithFilter(filter.get(), subset, empty, &outSubset, &offset);
REPORTER_ASSERT(reporter, !result);
SkIRect leftField = SkIRect::MakeXYWH(-1000, 0, 100, 100);
result = sourceImage->makeWithFilter(filter.get(), subset, leftField, &outSubset, &offset);
REPORTER_ASSERT(reporter, !result);
result = sourceImage->makeWithFilter(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 = SkXfermodeImageFilter::Make(SkBlendMode::kSrc, nullptr);
result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, &outSubset, &offset);
REPORTER_ASSERT(reporter, result);
}
}
DEF_TEST(ImageFilterMakeWithFilter, reporter) {
test_make_with_filter(reporter, nullptr);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMakeWithFilter_Gpu, reporter, ctxInfo) {
test_make_with_filter(reporter, ctxInfo.grContext());
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterHugeBlur_Gpu, reporter, ctxInfo) {
sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(ctxInfo.grContext(),
SkBudgeted::kNo,
SkImageInfo::MakeN32Premul(100, 100)));
SkCanvas* canvas = surf->getCanvas();
test_huge_blur(canvas, reporter);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(XfermodeImageFilterCroppedInput_Gpu, reporter, ctxInfo) {
sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(
ctxInfo.grContext(),
SkBudgeted::kNo,
SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
test_xfermode_cropped_input(surf.get(), reporter);
}
DEF_GPUTEST_FOR_ALL_CONTEXTS(ImageFilterBlurLargeImage_Gpu, reporter, ctxInfo) {
auto surface(SkSurface::MakeRenderTarget(
ctxInfo.grContext(), SkBudgeted::kYes,
SkImageInfo::Make(100, 100, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
test_large_blur_input(reporter, surface->getCanvas());
}
/*
* Test that colorfilterimagefilter does not require its CTM to be decomposed when it has more
* than just scale/translate, but that other filters do.
*/
DEF_TEST(ImageFilterComplexCTM, reporter) {
// just need a colorfilter to exercise the corresponding imagefilter
sk_sp<SkColorFilter> cf = SkColorFilter::MakeModeFilter(SK_ColorRED, SkBlendMode::kSrcATop);
sk_sp<SkImageFilter> cfif = SkColorFilterImageFilter::Make(cf, nullptr); // can handle
sk_sp<SkImageFilter> blif = SkBlurImageFilter::Make(3, 3, nullptr); // cannot handle
struct {
sk_sp<SkImageFilter> fFilter;
bool fExpectCanHandle;
} recs[] = {
{ cfif, true },
{ SkColorFilterImageFilter::Make(cf, cfif), true },
{ SkMergeImageFilter::Make(cfif, cfif), true },
{ SkComposeImageFilter::Make(cfif, cfif), true },
{ blif, false },
{ SkBlurImageFilter::Make(3, 3, cfif), false },
{ SkColorFilterImageFilter::Make(cf, blif), false },
{ SkMergeImageFilter::Make(cfif, blif), false },
{ SkComposeImageFilter::Make(blif, cfif), false },
};
for (const auto& rec : recs) {
const bool canHandle = rec.fFilter->canHandleComplexCTM();
REPORTER_ASSERT(reporter, canHandle == rec.fExpectCanHandle);
}
}
// Test that transforming the filter DAG doesn't clone shared nodes multiple times.
DEF_TEST(ImageFilterColorSpaceDAG, reporter) {
// Helper for counting makeColorSpace() clones.
class TestFilter final : public SkImageFilter {
public:
TestFilter() : INHERITED(nullptr, 0, nullptr) {}
Factory getFactory() const override { return nullptr; }
size_t cloneCount() const { return fCloneCount; }
protected:
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* src, const Context&,
SkIPoint* offset) const override {
return nullptr;
}
sk_sp<SkImageFilter> onMakeColorSpace(SkColorSpaceXformer*) const override {
fCloneCount++;
return sk_ref_sp(const_cast<TestFilter*>(this));
}
private:
typedef SkImageFilter INHERITED;
mutable size_t fCloneCount = 0;
};
auto filter = sk_make_sp<TestFilter>();
REPORTER_ASSERT(reporter, filter->cloneCount() == 0u);
// Build a DAG referencing the filter twice.
auto complexFilter = SkMergeImageFilter::Make(filter, SkOffsetImageFilter::Make(1, 1, filter));
REPORTER_ASSERT(reporter, filter->cloneCount() == 0u);
auto xformer = SkColorSpaceXformer::Make(SkColorSpace::MakeSRGB());
auto xformedFilter = xformer->apply(complexFilter.get());
REPORTER_ASSERT(reporter, filter->cloneCount() == 1u);
}
// Test SkXfermodeImageFilter::filterBounds with different blending modes.
DEF_TEST(XfermodeImageFilterBounds, reporter) {
SkIRect background_rect = SkIRect::MakeXYWH(0, 0, 100, 100);
SkIRect foreground_rect = SkIRect::MakeXYWH(50, 50, 100, 100);
sk_sp<SkImageFilter> background(new FixedBoundsImageFilter(background_rect));
sk_sp<SkImageFilter> foreground(new FixedBoundsImageFilter(foreground_rect));
const int kModeCount = static_cast<int>(SkBlendMode::kLastMode) + 1;
SkIRect expectedBounds[kModeCount];
// Expect union of input rects by default.
for (int i = 0; i < kModeCount; ++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::kSrcATop)] = background_rect;
expectedBounds[static_cast<int>(SkBlendMode::kDstATop)] = foreground_rect;
// The value of this variable doesn't matter because we use inputs with fixed bounds.
SkIRect src = SkIRect::MakeXYWH(11, 22, 33, 44);
for (int i = 0; i < kModeCount; ++i) {
sk_sp<SkImageFilter> xfermode(SkXfermodeImageFilter::Make(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(new FixedBoundsImageFilter(SkIRect::MakeXYWH(0, 0, 20, 20)));
sk_sp<SkImageFilter> foreground2(new FixedBoundsImageFilter(SkIRect::MakeXYWH(40, 40, 50, 50)));
sk_sp<SkImageFilter> xfermode(SkXfermodeImageFilter::Make(
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(OffsetImageFilterBounds, reporter) {
SkIRect src = SkIRect::MakeXYWH(0, 0, 100, 100);
sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(-50.5f, -50.5f, nullptr));
SkIRect expectedForward = SkIRect::MakeXYWH(-50, -50, 100, 100);
SkIRect boundsForward = offset->filterBounds(src, SkMatrix::I(),
SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, boundsForward == expectedForward);
SkIRect expectedReverse = SkIRect::MakeXYWH(50, 50, 100, 100);
SkIRect boundsReverse = offset->filterBounds(src, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &src);
REPORTER_ASSERT(reporter, boundsReverse == expectedReverse);
}
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 SkImageFilter::CropRect* crop, const SkIRect& expected) {
sk_sp<SkImageFilter> arithmetic(
SkArithmeticImageFilter::Make(k1, k2, k3, k4, false, background, foreground, crop));
// The value of the input rect doesn't matter because we use inputs with fixed bounds.
SkIRect bounds = arithmetic->filterBounds(SkIRect::MakeXYWH(11, 22, 33, 44), SkMatrix::I(),
SkImageFilter::kForward_MapDirection, nullptr);
REPORTER_ASSERT(reporter, expected == bounds);
}
static void test_arithmetic_combinations(skiatest::Reporter* reporter, float v) {
SkIRect background_rect = SkIRect::MakeXYWH(0, 0, 100, 100);
SkIRect foreground_rect = SkIRect::MakeXYWH(50, 50, 100, 100);
sk_sp<SkImageFilter> background(new FixedBoundsImageFilter(background_rect));
sk_sp<SkImageFilter> foreground(new FixedBoundsImageFilter(foreground_rect));
SkIRect union_rect = background_rect;
union_rect.join(foreground_rect);
SkIRect intersection = background_rect;
intersection.intersect(foreground_rect);
test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, nullptr,
SkIRect::MakeEmpty());
test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, nullptr, background_rect);
test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, nullptr, foreground_rect);
test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, nullptr, intersection);
test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, nullptr, background_rect);
test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, nullptr, foreground_rect);
test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, nullptr, union_rect);
test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, nullptr, union_rect);
// Test with crop. When k4 is non-zero, the result is expected to be crop_rect
// regardless of inputs because the filter affects the whole crop area.
SkIRect crop_rect = SkIRect::MakeXYWH(-111, -222, 333, 444);
SkImageFilter::CropRect crop(SkRect::Make(crop_rect));
test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, &crop,
SkIRect::MakeEmpty());
test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, &crop, background_rect);
test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, &crop, foreground_rect);
test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, &crop, union_rect);
test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, &crop, intersection);
test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, &crop, background_rect);
test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, &crop, foreground_rect);
test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, &crop, crop_rect);
test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, &crop, union_rect);
test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, &crop, crop_rect);
}
// Test SkArithmeticImageFilter::filterBounds with different blending modes.
DEF_TEST(ArithmeticImageFilterBounds, reporter) {
test_arithmetic_combinations(reporter, 1);
test_arithmetic_combinations(reporter, 0.5);
}
// Test SkImageSource::filterBounds.
DEF_TEST(ImageSourceBounds, reporter) {
sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_gradient_circle(64, 64)));
// Default src and dst rects.
sk_sp<SkImageFilter> source1(SkImageSource::Make(image));
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,
input == source1->filterBounds(input, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &input));
SkMatrix scale(SkMatrix::MakeScale(2));
SkIRect scaledBounds = SkIRect::MakeWH(128, 128);
REPORTER_ASSERT(reporter,
scaledBounds == source1->filterBounds(input, scale,
SkImageFilter::kForward_MapDirection,
nullptr));
REPORTER_ASSERT(reporter, input == source1->filterBounds(input, scale,
SkImageFilter::kReverse_MapDirection,
&input));
// Specified src and dst rects.
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(SkImageSource::Make(image, src, dst, kMedium_SkFilterQuality));
REPORTER_ASSERT(reporter,
dst.roundOut() == source2->filterBounds(input, SkMatrix::I(),
SkImageFilter::kForward_MapDirection,
nullptr));
REPORTER_ASSERT(reporter,
input == source2->filterBounds(input, SkMatrix::I(),
SkImageFilter::kReverse_MapDirection, &input));
scale.mapRect(&dst);
scale.mapRect(&src);
REPORTER_ASSERT(reporter,
dst.roundOut() == source2->filterBounds(input, scale,
SkImageFilter::kForward_MapDirection,
nullptr));
REPORTER_ASSERT(reporter, input == source2->filterBounds(input, scale,
SkImageFilter::kReverse_MapDirection,
&input));
}
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