diff options
author | kjlubick <kjlubick@google.com> | 2016-04-05 12:48:47 -0700 |
---|---|---|
committer | Commit bot <commit-bot@chromium.org> | 2016-04-05 12:48:47 -0700 |
commit | 4319593988db5796023d9f5f34a8ed285c2097dd (patch) | |
tree | 66b1e5d6ab8c25d67705ad82e492e3c3a31aff80 /fuzz | |
parent | 8c0326df5f600da43a054dad3b354221dd6b790f (diff) |
Do an in-place replacement of SkRandom with Fuzz for FilterFuzz
This feels rather clunky, because we aren't using the full potential of the
fuzzer, but it works, it seems.
BUG=skia:4969
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1710183002
Review URL: https://codereview.chromium.org/1710183002
Diffstat (limited to 'fuzz')
-rw-r--r-- | fuzz/FilterFuzz.cpp | 811 | ||||
-rw-r--r-- | fuzz/Fuzz.h | 2 | ||||
-rw-r--r-- | fuzz/fuzz.cpp | 10 |
3 files changed, 821 insertions, 2 deletions
diff --git a/fuzz/FilterFuzz.cpp b/fuzz/FilterFuzz.cpp new file mode 100644 index 0000000000..c1513a8bc3 --- /dev/null +++ b/fuzz/FilterFuzz.cpp @@ -0,0 +1,811 @@ +/* + * 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 "Fuzz.h" +#include "Sk1DPathEffect.h" +#include "Sk2DPathEffect.h" +#include "SkAlphaThresholdFilter.h" +#include "SkArcToPathEffect.h" +#include "SkBlurImageFilter.h" +#include "SkBlurMaskFilter.h" +#include "SkCanvas.h" +#include "SkColorCubeFilter.h" +#include "SkColorFilter.h" +#include "SkColorFilterImageFilter.h" +#include "SkColorMatrixFilter.h" +#include "SkComposeImageFilter.h" +#include "SkCornerPathEffect.h" +#include "SkDashPathEffect.h" +#include "SkData.h" +#include "SkDiscretePathEffect.h" +#include "SkDisplacementMapEffect.h" +#include "SkDropShadowImageFilter.h" +#include "SkEmbossMaskFilter.h" +#include "SkFlattenableSerialization.h" +#include "SkImageSource.h" +#include "SkLayerRasterizer.h" +#include "SkLightingImageFilter.h" +#include "SkLumaColorFilter.h" +#include "SkMagnifierImageFilter.h" +#include "SkMatrixConvolutionImageFilter.h" +#include "SkMergeImageFilter.h" +#include "SkMorphologyImageFilter.h" +#include "SkOffsetImageFilter.h" +#include "SkPaintImageFilter.h" +#include "SkPerlinNoiseShader.h" +#include "SkPictureImageFilter.h" +#include "SkPictureRecorder.h" +#include "SkPoint3.h" +#include "SkRandom.h" +#include "SkTableColorFilter.h" +#include "SkTestImageFilters.h" +#include "SkTileImageFilter.h" +#include "SkTypeface.h" +#include "SkXfermodeImageFilter.h" +#include <stdio.h> +#include <time.h> + +#define SK_ADD_RANDOM_BIT_FLIPS + +static Fuzz* fuzz; +static const int kBitmapSize = 24; + +static bool return_large = false; +static bool return_undef = false; + +static int R(float x) { + return (int)floor(SkScalarToFloat(fuzz->nextF1()) * x); +} + +#if defined _WIN32 +#pragma warning ( push ) +// we are intentionally causing an overflow here +// (warning C4756: overflow in constant arithmetic) +#pragma warning ( disable : 4756 ) +#endif + +static float huge() { + double d = 1e100; + float f = (float)d; + return f; +} + +#if defined _WIN32 +#pragma warning ( pop ) +#endif + +static float make_number(bool positiveOnly) { + float f = positiveOnly ? 1.0f : 0.0f; + float v = f; + int sel; + + if (return_large) sel = R(6); else sel = R(4); + if (!return_undef && sel == 0) sel = 1; + + if (R(2) == 1) v = (float)(R(100)+f); else + + switch (sel) { + case 0: break; + case 1: v = f; break; + case 2: v = 0.000001f; break; + case 3: v = 10000.0f; break; + case 4: v = 2000000000.0f; break; + case 5: v = huge(); break; + } + + if (!positiveOnly && (R(4) == 1)) v = -v; + return v; +} + +static SkScalar make_scalar(bool positiveOnly = false) { + return make_number(positiveOnly); +} + +static SkString make_string() { + int length = R(1000); + SkString str(length); + for (int i = 0; i < length; ++i) { + str[i] = static_cast<char>(R(256)); + } + return str; +} + +static SkString make_font_name() { + int sel = R(8); + + switch(sel) { + case 0: return SkString("Courier New"); + case 1: return SkString("Helvetica"); + case 2: return SkString("monospace"); + case 3: return SkString("sans-serif"); + case 4: return SkString("serif"); + case 5: return SkString("Times"); + case 6: return SkString("Times New Roman"); + case 7: + default: + return make_string(); + } +} + +static bool make_bool() { + return R(2) == 1; +} + +static SkRect make_rect() { + return SkRect::MakeWH(SkIntToScalar(R(static_cast<float>(kBitmapSize))), + SkIntToScalar(R(static_cast<float>(kBitmapSize)))); +} + +static SkRegion make_region() { + SkIRect iRegion = SkIRect::MakeXYWH(R(static_cast<float>(kBitmapSize)), + R(static_cast<float>(kBitmapSize)), + R(static_cast<float>(kBitmapSize)), + R(static_cast<float>(kBitmapSize))); + return SkRegion(iRegion); +} + +static SkMatrix make_matrix() { + SkMatrix m; + for (int i = 0; i < 9; ++i) { + m[i] = make_scalar(); + } + return m; +} + +static SkXfermode::Mode make_xfermode() { + return static_cast<SkXfermode::Mode>(R(SkXfermode::kLastMode+1)); +} + +static SkPaint::Align make_paint_align() { + return static_cast<SkPaint::Align>(R(SkPaint::kRight_Align+1)); +} + +static SkPaint::Hinting make_paint_hinting() { + return static_cast<SkPaint::Hinting>(R(SkPaint::kFull_Hinting+1)); +} + +static SkPaint::Style make_paint_style() { + return static_cast<SkPaint::Style>(R(SkPaint::kStrokeAndFill_Style+1)); +} + +static SkPaint::Cap make_paint_cap() { + return static_cast<SkPaint::Cap>(R(SkPaint::kDefault_Cap+1)); +} + +static SkPaint::Join make_paint_join() { + return static_cast<SkPaint::Join>(R(SkPaint::kDefault_Join+1)); +} + +static SkPaint::TextEncoding make_paint_text_encoding() { + return static_cast<SkPaint::TextEncoding>(R(SkPaint::kGlyphID_TextEncoding+1)); +} + +static SkBlurStyle make_blur_style() { + return static_cast<SkBlurStyle>(R(kLastEnum_SkBlurStyle+1)); +} + +static SkBlurMaskFilter::BlurFlags make_blur_mask_filter_flag() { + return static_cast<SkBlurMaskFilter::BlurFlags>(R(SkBlurMaskFilter::kAll_BlurFlag+1)); +} + +static SkFilterQuality make_filter_quality() { + return static_cast<SkFilterQuality>(R(kHigh_SkFilterQuality+1)); +} + +static SkTypeface::Style make_typeface_style() { + return static_cast<SkTypeface::Style>(R(SkTypeface::kBoldItalic+1)); +} + +static SkPath1DPathEffect::Style make_path_1d_path_effect_style() { + return static_cast<SkPath1DPathEffect::Style>(R((int)SkPath1DPathEffect::kLastEnum_Style + 1)); +} + +static SkColor make_color() { + return (R(2) == 1) ? 0xFFC0F0A0 : 0xFF000090; +} + +static SkDropShadowImageFilter::ShadowMode make_shadow_mode() { + return (R(2) == 1) ? SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode : + SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode; +} + +static SkPoint3 make_point() { + return SkPoint3::Make(make_scalar(), make_scalar(), make_scalar(true)); +} + +static SkDisplacementMapEffect::ChannelSelectorType make_channel_selector_type() { + return static_cast<SkDisplacementMapEffect::ChannelSelectorType>(R(4)+1); +} + +static bool valid_for_raster_canvas(const SkImageInfo& info) { + switch (info.colorType()) { + case kAlpha_8_SkColorType: + case kRGB_565_SkColorType: + return true; + case kN32_SkColorType: + return kPremul_SkAlphaType == info.alphaType() || + kOpaque_SkAlphaType == info.alphaType(); + default: + break; + } + return false; +} + +static SkColorType rand_colortype() { + return (SkColorType)R(kLastEnum_SkColorType + 1); +} + +static void rand_bitmap_for_canvas(SkBitmap* bitmap) { + SkImageInfo info; + do { + info = SkImageInfo::Make(kBitmapSize, kBitmapSize, rand_colortype(), + kPremul_SkAlphaType); + } while (!valid_for_raster_canvas(info) || !bitmap->tryAllocPixels(info)); +} + +static void make_g_bitmap(SkBitmap& bitmap) { + rand_bitmap_for_canvas(&bitmap); + + SkCanvas canvas(bitmap); + canvas.clear(0x00000000); + SkPaint paint; + paint.setAntiAlias(true); + paint.setColor(0xFF884422); + paint.setTextSize(SkIntToScalar(kBitmapSize/2)); + const char* str = "g"; + canvas.drawText(str, strlen(str), SkIntToScalar(kBitmapSize/8), + SkIntToScalar(kBitmapSize/4), paint); +} + +static void make_checkerboard_bitmap(SkBitmap& bitmap) { + rand_bitmap_for_canvas(&bitmap); + + SkCanvas canvas(bitmap); + canvas.clear(0x00000000); + SkPaint darkPaint; + darkPaint.setColor(0xFF804020); + SkPaint lightPaint; + lightPaint.setColor(0xFF244484); + const int i = kBitmapSize / 8; + const SkScalar f = SkIntToScalar(i); + 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, f, f), darkPaint); + canvas.drawRect(SkRect::MakeXYWH(f, 0, f, f), lightPaint); + canvas.drawRect(SkRect::MakeXYWH(0, f, f, f), lightPaint); + canvas.drawRect(SkRect::MakeXYWH(f, f, f, f), darkPaint); + canvas.restore(); + } + } +} + +static const SkBitmap& make_bitmap() { + static SkBitmap bitmap[2]; + static bool initialized = false; + if (!initialized) { + make_g_bitmap(bitmap[0]); + make_checkerboard_bitmap(bitmap[1]); + initialized = true; + } + return bitmap[R(2)]; +} + +static sk_sp<SkData> make_3Dlut(int* cubeDimension, bool invR, bool invG, bool invB) { + int size = 4 << R(5); + auto data = SkData::MakeUninitialized(sizeof(SkColor) * size * size * size); + SkColor* pixels = (SkColor*)(data->writable_data()); + SkAutoTMalloc<uint8_t> lutMemory(size); + SkAutoTMalloc<uint8_t> invLutMemory(size); + uint8_t* lut = lutMemory.get(); + uint8_t* invLut = invLutMemory.get(); + const int maxIndex = size - 1; + for (int i = 0; i < size; i++) { + lut[i] = (i * 255) / maxIndex; + invLut[i] = ((maxIndex - i) * 255) / maxIndex; + } + for (int r = 0; r < size; ++r) { + for (int g = 0; g < size; ++g) { + for (int b = 0; b < size; ++b) { + pixels[(size * ((size * b) + g)) + r] = SkColorSetARGB(0xFF, + invR ? invLut[r] : lut[r], + invG ? invLut[g] : lut[g], + invB ? invLut[b] : lut[b]); + } + } + } + if (cubeDimension) { + *cubeDimension = size; + } + return data; +} + +static void drawSomething(SkCanvas* canvas) { + SkPaint paint; + + canvas->save(); + canvas->scale(0.5f, 0.5f); + canvas->drawBitmap(make_bitmap(), 0, 0, nullptr); + canvas->restore(); + + paint.setAntiAlias(true); + + paint.setColor(SK_ColorRED); + canvas->drawCircle(SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/3), paint); + paint.setColor(SK_ColorBLACK); + paint.setTextSize(SkIntToScalar(kBitmapSize/3)); + canvas->drawText("Picture", 7, SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint); +} + +static void rand_color_table(uint8_t* table) { + for (int i = 0; i < 256; ++i) { + table[i] = R(256); + } +} + +static sk_sp<SkColorFilter> make_color_filter() { + switch (R(6)) { + case 0: { + SkScalar array[20]; + for (int i = 0; i < 20; ++i) { + array[i] = make_scalar(); + } + return SkColorFilter::MakeMatrixFilterRowMajor255(array); + } + case 1: + return SkLumaColorFilter::Make(); + case 2: { + uint8_t tableA[256]; + uint8_t tableR[256]; + uint8_t tableG[256]; + uint8_t tableB[256]; + rand_color_table(tableA); + rand_color_table(tableR); + rand_color_table(tableG); + rand_color_table(tableB); + return SkTableColorFilter::MakeARGB(tableA, tableR, tableG, tableB); + } + case 3: + return SkColorFilter::MakeModeFilter(make_color(), make_xfermode()); + case 4: + return SkColorMatrixFilter::MakeLightingFilter(make_color(), make_color()); + case 5: + default: + break; + } + return nullptr; +} + +static SkPath make_path() { + SkPath path; + int numOps = R(30); + for (int i = 0; i < numOps; ++i) { + switch (R(6)) { + case 0: + path.moveTo(make_scalar(), make_scalar()); + break; + case 1: + path.lineTo(make_scalar(), make_scalar()); + break; + case 2: + path.quadTo(make_scalar(), make_scalar(), make_scalar(), make_scalar()); + break; + case 3: + path.conicTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar()); + break; + case 4: + path.cubicTo(make_scalar(), make_scalar(), make_scalar(), + make_scalar(), make_scalar(), make_scalar()); + break; + case 5: + default: + path.arcTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar()); + break; + + } + } + path.close(); + return path; +} + +static sk_sp<SkPathEffect> make_path_effect(bool canBeNull = true) { + sk_sp<SkPathEffect> pathEffect; + if (canBeNull && (R(3) == 1)) { return pathEffect; } + + switch (R(9)) { + case 0: + pathEffect = SkArcToPathEffect::Make(make_scalar(true)); + break; + case 1: + pathEffect = SkComposePathEffect::Make(make_path_effect(false), + make_path_effect(false)); + break; + case 2: + pathEffect = SkCornerPathEffect::Make(make_scalar()); + break; + case 3: { + int count = R(10); + SkScalar intervals[10]; + for (int i = 0; i < count; ++i) { + intervals[i] = make_scalar(); + } + pathEffect = SkDashPathEffect::Make(intervals, count, make_scalar()); + break; + } + case 4: + pathEffect = SkDiscretePathEffect::Make(make_scalar(), make_scalar()); + break; + case 5: + pathEffect = SkPath1DPathEffect::Make(make_path(), make_scalar(), make_scalar(), + make_path_1d_path_effect_style()); + break; + case 6: + pathEffect = SkLine2DPathEffect::Make(make_scalar(), make_matrix()); + break; + case 7: + pathEffect = SkPath2DPathEffect::Make(make_matrix(), make_path()); + break; + case 8: + default: + pathEffect = SkSumPathEffect::Make(make_path_effect(false), + make_path_effect(false)); + break; + } + return pathEffect; +} + +static sk_sp<SkMaskFilter> make_mask_filter() { + sk_sp<SkMaskFilter> maskFilter; + switch (R(3)) { + case 0: + maskFilter = SkBlurMaskFilter::Make(make_blur_style(), make_scalar(), + make_blur_mask_filter_flag()); + case 1: { + SkEmbossMaskFilter::Light light; + for (int i = 0; i < 3; ++i) { + light.fDirection[i] = make_scalar(); + } + light.fPad = R(65536); + light.fAmbient = R(256); + light.fSpecular = R(256); + maskFilter = SkEmbossMaskFilter::Make(make_scalar(), light); + } + case 2: + default: + break; + } + return maskFilter; +} + +static sk_sp<SkImageFilter> make_image_filter(bool canBeNull = true); + +static SkPaint make_paint() { + SkPaint paint; + paint.setHinting(make_paint_hinting()); + paint.setAntiAlias(make_bool()); + paint.setDither(make_bool()); + paint.setLinearText(make_bool()); + paint.setSubpixelText(make_bool()); + paint.setLCDRenderText(make_bool()); + paint.setEmbeddedBitmapText(make_bool()); + paint.setAutohinted(make_bool()); + paint.setVerticalText(make_bool()); + paint.setUnderlineText(make_bool()); + paint.setStrikeThruText(make_bool()); + paint.setFakeBoldText(make_bool()); + paint.setDevKernText(make_bool()); + paint.setFilterQuality(make_filter_quality()); + paint.setStyle(make_paint_style()); + paint.setColor(make_color()); + paint.setStrokeWidth(make_scalar()); + paint.setStrokeMiter(make_scalar()); + paint.setStrokeCap(make_paint_cap()); + paint.setStrokeJoin(make_paint_join()); + paint.setColorFilter(make_color_filter()); + paint.setXfermodeMode(make_xfermode()); + paint.setPathEffect(make_path_effect()); + paint.setMaskFilter(make_mask_filter()); + + if (false) { + // our validating buffer does not support typefaces yet, so skip this for now + SkAutoTUnref<SkTypeface> typeface( + SkTypeface::CreateFromName(make_font_name().c_str(), make_typeface_style())); + paint.setTypeface(typeface); + } + + SkLayerRasterizer::Builder rasterizerBuilder; + SkPaint paintForRasterizer; + if (R(2) == 1) { + paintForRasterizer = make_paint(); + } + rasterizerBuilder.addLayer(paintForRasterizer); + paint.setRasterizer(rasterizerBuilder.detach()); + paint.setImageFilter(make_image_filter()); + sk_sp<SkData> data(make_3Dlut(nullptr, make_bool(), make_bool(), make_bool())); + paint.setTextAlign(make_paint_align()); + paint.setTextSize(make_scalar()); + paint.setTextScaleX(make_scalar()); + paint.setTextSkewX(make_scalar()); + paint.setTextEncoding(make_paint_text_encoding()); + return paint; +} + +static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) { + sk_sp<SkImageFilter> filter; + + // Add a 1 in 3 chance to get a nullptr input + if (canBeNull && (R(3) == 1)) { + return filter; + } + + enum { ALPHA_THRESHOLD, MERGE, COLOR, LUT3D, BLUR, MAGNIFIER, + DOWN_SAMPLE, XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE, + DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW, + MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, PAINT, NUM_FILTERS }; + + switch (R(NUM_FILTERS)) { + case ALPHA_THRESHOLD: + filter = SkAlphaThresholdFilter::Make(make_region(), + make_scalar(), + make_scalar(), + nullptr); + break; + case MERGE: + filter = SkMergeImageFilter::Make(make_image_filter(), + make_image_filter(), + make_xfermode()); + break; + case COLOR: { + sk_sp<SkColorFilter> cf(make_color_filter()); + filter = cf ? SkColorFilterImageFilter::Make(std::move(cf), make_image_filter()) + : nullptr; + break; + } + case LUT3D: { + int cubeDimension; + sk_sp<SkData> lut3D(make_3Dlut(&cubeDimension, (R(2) == 1), (R(2) == 1), (R(2) == 1))); + sk_sp<SkColorFilter> cf(SkColorCubeFilter::Make(std::move(lut3D), cubeDimension)); + filter = cf ? SkColorFilterImageFilter::Make(std::move(cf), make_image_filter()) + : nullptr; + break; + } + case BLUR: + filter = SkBlurImageFilter::Make(make_scalar(true), + make_scalar(true), + make_image_filter()); + break; + case MAGNIFIER: + filter = sk_sp<SkImageFilter>(SkMagnifierImageFilter::Create(make_rect(), + make_scalar(true))); + break; + case DOWN_SAMPLE: + filter = sk_sp<SkImageFilter>(SkDownSampleImageFilter::Create(make_scalar())); + break; + case XFERMODE: + filter = SkXfermodeImageFilter::Make(SkXfermode::Make(make_xfermode()), + make_image_filter(), + make_image_filter(), + nullptr); + break; + case OFFSET: + filter = SkOffsetImageFilter::Make(make_scalar(), make_scalar(), make_image_filter()); + break; + case MATRIX: { + sk_sp<SkImageFilter> subFilter(make_image_filter()); + filter = sk_sp<SkImageFilter>(SkImageFilter::CreateMatrixFilter(make_matrix(), + (SkFilterQuality)R(4), + subFilter.get())); + break; + } + case MATRIX_CONVOLUTION: { + SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), + SkIntToScalar(kBitmapSize))); + SkISize size = SkISize::Make(R(10)+1, R(10)+1); + int arraySize = size.width() * size.height(); + SkTArray<SkScalar> kernel(arraySize); + for (int i = 0; i < arraySize; ++i) { + kernel.push_back() = make_scalar(); + } + SkIPoint kernelOffset = SkIPoint::Make(R(SkIntToScalar(size.width())), + R(SkIntToScalar(size.height()))); + sk_sp<SkImageFilter> subFilter(make_image_filter()); + + filter = sk_sp<SkImageFilter>(SkMatrixConvolutionImageFilter::Create( + size, + kernel.begin(), + make_scalar(), + make_scalar(), + kernelOffset, + (SkMatrixConvolutionImageFilter::TileMode)R(3), + R(2) == 1, + subFilter.get(), + &cropR)); + break; + } + case COMPOSE: + filter = SkComposeImageFilter::Make(make_image_filter(), make_image_filter()); + break; + case DISTANT_LIGHT: { + sk_sp<SkImageFilter> subFilter(make_image_filter()); + + filter = (R(2) == 1) + ? sk_sp<SkImageFilter>(SkLightingImageFilter::CreateDistantLitDiffuse(make_point(), + make_color(), make_scalar(), make_scalar(), + subFilter.get())) + : sk_sp<SkImageFilter>(SkLightingImageFilter::CreateDistantLitSpecular(make_point(), + make_color(), make_scalar(), + make_scalar(), SkIntToScalar(R(10)), + subFilter.get())); + break; + } + case POINT_LIGHT: { + sk_sp<SkImageFilter> subFilter(make_image_filter()); + + filter = (R(2) == 1) + ? sk_sp<SkImageFilter>(SkLightingImageFilter::CreatePointLitDiffuse(make_point(), + make_color(), make_scalar(), make_scalar(), + subFilter.get())) + : sk_sp<SkImageFilter>(SkLightingImageFilter::CreatePointLitSpecular(make_point(), + make_color(), make_scalar(), make_scalar(), + SkIntToScalar(R(10)), + subFilter.get())); + break; + } + case SPOT_LIGHT: { + sk_sp<SkImageFilter> subFilter(make_image_filter()); + + filter = (R(2) == 1) + ? sk_sp<SkImageFilter>(SkLightingImageFilter::CreateSpotLitDiffuse(SkPoint3::Make(0, 0, 0), + make_point(), make_scalar(), make_scalar(), + make_color(), make_scalar(), make_scalar(), + subFilter.get())) + : sk_sp<SkImageFilter>(SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3::Make(0, 0, 0), + make_point(), make_scalar(), make_scalar(), + make_color(), make_scalar(), make_scalar(), + SkIntToScalar(R(10)), subFilter.get())); + break; + } + case NOISE: { + sk_sp<SkShader> shader((R(2) == 1) ? + SkPerlinNoiseShader::MakeFractalNoise( + make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) : + SkPerlinNoiseShader::MakeTurbulence( + make_scalar(true), make_scalar(true), R(10.0f), make_scalar())); + SkPaint paint; + paint.setShader(shader); + SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), + SkIntToScalar(kBitmapSize))); + filter = SkPaintImageFilter::Make(paint, &cropR); + break; + } + case DROP_SHADOW: { + sk_sp<SkImageFilter> subFilter(make_image_filter()); + + filter = sk_sp<SkImageFilter>(SkDropShadowImageFilter::Create(make_scalar(), + make_scalar(), + make_scalar(true), + make_scalar(true), + make_color(), + make_shadow_mode(), + subFilter.get(), + nullptr)); + break; + } + case MORPHOLOGY: + if (R(2) == 1) { + filter = SkDilateImageFilter::Make(R(static_cast<float>(kBitmapSize)), + R(static_cast<float>(kBitmapSize)), + make_image_filter()); + } else { + filter = SkErodeImageFilter::Make(R(static_cast<float>(kBitmapSize)), + R(static_cast<float>(kBitmapSize)), + make_image_filter()); + } + break; + case BITMAP: { + sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_bitmap())); + if (R(2) == 1) { + filter = SkImageSource::Make(std::move(image), + make_rect(), + make_rect(), + kHigh_SkFilterQuality); + } else { + filter = SkImageSource::Make(std::move(image)); + } + break; + } + case DISPLACE: { + sk_sp<SkImageFilter> subFilter1(make_image_filter(false)); + sk_sp<SkImageFilter> subFilter2(make_image_filter()); + + filter = sk_sp<SkImageFilter>(SkDisplacementMapEffect::Create(make_channel_selector_type(), + make_channel_selector_type(), + make_scalar(), + subFilter1.get(), + subFilter2.get())); + break; + } + case TILE: { + sk_sp<SkImageFilter> subFilter(make_image_filter(false)); + + filter = sk_sp<SkImageFilter>(SkTileImageFilter::Create(make_rect(), + make_rect(), + subFilter.get())); + break; + } + case PICTURE: { + SkRTreeFactory factory; + SkPictureRecorder recorder; + SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize), + SkIntToScalar(kBitmapSize), + &factory, 0); + drawSomething(recordingCanvas); + sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture()); + filter = SkPictureImageFilter::Make(pict, make_rect()); + break; + } + case PAINT: { + SkImageFilter::CropRect cropR(make_rect()); + filter = SkPaintImageFilter::Make(make_paint(), &cropR); + break; + } + default: + break; + } + return (filter || canBeNull) ? filter : make_image_filter(canBeNull); +} + +static SkImageFilter* make_serialized_image_filter() { + sk_sp<SkImageFilter> filter(make_image_filter(false)); + SkAutoTUnref<SkData> data(SkValidatingSerializeFlattenable(filter.get())); + const unsigned char* ptr = static_cast<const unsigned char*>(data->data()); + size_t len = data->size(); +#ifdef SK_ADD_RANDOM_BIT_FLIPS + unsigned char* p = const_cast<unsigned char*>(ptr); + for (size_t i = 0; i < len; ++i, ++p) { + if (R(250) == 1) { // 0.4% of the time, flip a bit or byte + if (R(10) == 1) { // Then 10% of the time, change a whole byte + switch(R(3)) { + case 0: + *p ^= 0xFF; // Flip entire byte + break; + case 1: + *p = 0xFF; // Set all bits to 1 + break; + case 2: + *p = 0x00; // Set all bits to 0 + break; + } + } else { + *p ^= (1 << R(8)); + } + } + } +#endif // SK_ADD_RANDOM_BIT_FLIPS + SkFlattenable* flattenable = SkValidatingDeserializeFlattenable(ptr, len, + SkImageFilter::GetFlattenableType()); + return static_cast<SkImageFilter*>(flattenable); +} + +static void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) { + canvas->save(); + canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), + SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize))); + canvas->drawBitmap(make_bitmap(), SkIntToScalar(x), SkIntToScalar(y), &paint); + canvas->restore(); +} + +DEF_FUZZ(SerializedImageFilter, f) { + fuzz = f; + SkImageFilter* filter = make_serialized_image_filter(); + + SkPaint paint; + SkSafeUnref(paint.setImageFilter(filter)); + SkBitmap bitmap; + SkCanvas canvas(bitmap); + drawClippedBitmap(&canvas, 0, 0, paint); +} diff --git a/fuzz/Fuzz.h b/fuzz/Fuzz.h index 26a8d429b3..07c2c8456e 100644 --- a/fuzz/Fuzz.h +++ b/fuzz/Fuzz.h @@ -21,6 +21,8 @@ public: uint32_t nextU(); // This can be nan, +- infinity, 0, anything. float nextF(); + // Returns a float between [0..1) as a IEEE float + float nextF1(); // Return the next fuzzed value [min, max) as an unsigned 32bit integer. uint32_t nextRangeU(uint32_t min, uint32_t max); diff --git a/fuzz/fuzz.cpp b/fuzz/fuzz.cpp index 40f48175e2..d35e7ae4d1 100644 --- a/fuzz/fuzz.cpp +++ b/fuzz/fuzz.cpp @@ -378,8 +378,8 @@ int fuzz_skp(SkData* bytes) { Fuzz::Fuzz(SkData* bytes) : fBytes(SkSafeRef(bytes)), fNextByte(0) {} -void Fuzz::signalBug () { raise(SIGSEGV); } -void Fuzz::signalBoring() { exit(0); } +void Fuzz::signalBug () { SkDebugf("Signal bug\n"); raise(SIGSEGV); } +void Fuzz::signalBoring() { SkDebugf("Signal boring\n"); exit(0); } template <typename T> T Fuzz::nextT() { @@ -398,6 +398,12 @@ bool Fuzz::nextBool() { return nextB()&1; } uint32_t Fuzz::nextU() { return this->nextT<uint32_t>(); } float Fuzz::nextF() { return this->nextT<float >(); } +float Fuzz::nextF1() { + // This is the same code as is in SkRandom's nextF() + unsigned int floatint = 0x3f800000 | (this->nextU() >> 9); + float f = SkBits2Float(floatint) - 1.0f; + return f; +} uint32_t Fuzz::nextRangeU(uint32_t min, uint32_t max) { if (min > max) { |