93a1215fe0
clone (+rebase) of https://codereview.chromium.org/1009183002/ BUG=skia: TBR=scroggo@google.com Review URL: https://codereview.chromium.org/1014533004
524 lines
18 KiB
C++
524 lines
18 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkAlphaThresholdFilter.h"
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#include "SkBitmapSource.h"
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#include "SkBlurImageFilter.h"
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#include "SkCanvas.h"
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#include "SkColorCubeFilter.h"
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#include "SkColorFilter.h"
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#include "SkColorFilterImageFilter.h"
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#include "SkComposeImageFilter.h"
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#include "SkData.h"
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#include "SkDisplacementMapEffect.h"
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#include "SkDropShadowImageFilter.h"
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#include "SkFlattenableSerialization.h"
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#include "SkLightingImageFilter.h"
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#include "SkMagnifierImageFilter.h"
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#include "SkMatrixImageFilter.h"
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#include "SkMatrixConvolutionImageFilter.h"
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#include "SkMergeImageFilter.h"
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#include "SkMorphologyImageFilter.h"
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#include "SkOffsetImageFilter.h"
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#include "SkPerlinNoiseShader.h"
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#include "SkPictureImageFilter.h"
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#include "SkPictureRecorder.h"
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#include "SkRandom.h"
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#include "SkRectShaderImageFilter.h"
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#include "SkTestImageFilters.h"
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#include "SkTileImageFilter.h"
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#include "SkView.h"
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#include "SkXfermodeImageFilter.h"
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#include <stdio.h>
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#include <time.h>
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//#define SK_ADD_RANDOM_BIT_FLIPS
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//#define SK_FUZZER_IS_VERBOSE
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static const uint32_t kSeed = (uint32_t)(time(NULL));
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static SkRandom gRand(kSeed);
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static bool return_large = false;
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static bool return_undef = false;
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static const int kBitmapSize = 24;
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static int R(float x) {
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return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x);
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}
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#if defined _WIN32
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#pragma warning ( push )
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// we are intentionally causing an overflow here
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// (warning C4756: overflow in constant arithmetic)
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#pragma warning ( disable : 4756 )
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#endif
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static float huge() {
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double d = 1e100;
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float f = (float)d;
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return f;
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}
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#if defined _WIN32
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#pragma warning ( pop )
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#endif
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static float make_number(bool positiveOnly) {
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float f = positiveOnly ? 1.0f : 0.0f;
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float v = f;
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int sel;
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if (return_large) sel = R(6); else sel = R(4);
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if (!return_undef && sel == 0) sel = 1;
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if (R(2) == 1) v = (float)(R(100)+f); else
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switch (sel) {
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case 0: break;
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case 1: v = f; break;
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case 2: v = 0.000001f; break;
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case 3: v = 10000.0f; break;
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case 4: v = 2000000000.0f; break;
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case 5: v = huge(); break;
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}
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if (!positiveOnly && (R(4) == 1)) v = -v;
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return v;
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}
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static SkScalar make_scalar(bool positiveOnly = false) {
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return make_number(positiveOnly);
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}
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static SkRect make_rect() {
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return SkRect::MakeWH(SkIntToScalar(R(static_cast<float>(kBitmapSize))),
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SkIntToScalar(R(static_cast<float>(kBitmapSize))));
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}
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static SkRegion make_region() {
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SkIRect iRegion = SkIRect::MakeXYWH(R(static_cast<float>(kBitmapSize)),
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R(static_cast<float>(kBitmapSize)),
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R(static_cast<float>(kBitmapSize)),
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R(static_cast<float>(kBitmapSize)));
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return SkRegion(iRegion);
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}
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static SkMatrix make_matrix() {
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SkMatrix m;
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for (int i = 0; i < 9; ++i) {
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m[i] = make_scalar();
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}
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return m;
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}
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static SkXfermode::Mode make_xfermode() {
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return static_cast<SkXfermode::Mode>(R(SkXfermode::kLastMode+1));
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}
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static SkColor make_color() {
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return (R(2) == 1) ? 0xFFC0F0A0 : 0xFF000090;
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}
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static SkDropShadowImageFilter::ShadowMode make_shadow_mode() {
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return (R(2) == 1) ? SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode :
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SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode;
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}
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static SkPoint3 make_point() {
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return SkPoint3(make_scalar(), make_scalar(), make_scalar(true));
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}
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static SkDisplacementMapEffect::ChannelSelectorType make_channel_selector_type() {
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return static_cast<SkDisplacementMapEffect::ChannelSelectorType>(R(4)+1);
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}
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static bool valid_for_raster_canvas(const SkImageInfo& info) {
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switch (info.colorType()) {
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case kAlpha_8_SkColorType:
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case kRGB_565_SkColorType:
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return true;
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case kN32_SkColorType:
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return kPremul_SkAlphaType == info.alphaType() ||
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kOpaque_SkAlphaType == info.alphaType();
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default:
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break;
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}
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return false;
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}
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static SkColorType rand_colortype() {
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return (SkColorType)R(kLastEnum_SkColorType + 1);
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}
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static void rand_bitmap_for_canvas(SkBitmap* bitmap) {
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SkImageInfo info;
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do {
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info = SkImageInfo::Make(kBitmapSize, kBitmapSize, rand_colortype(),
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kPremul_SkAlphaType);
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} while (!valid_for_raster_canvas(info) || !bitmap->tryAllocPixels(info));
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}
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static void make_g_bitmap(SkBitmap& bitmap) {
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rand_bitmap_for_canvas(&bitmap);
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SkCanvas canvas(bitmap);
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canvas.clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(0xFF884422);
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paint.setTextSize(SkIntToScalar(kBitmapSize/2));
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const char* str = "g";
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canvas.drawText(str, strlen(str), SkIntToScalar(kBitmapSize/8),
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SkIntToScalar(kBitmapSize/4), paint);
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}
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static void make_checkerboard_bitmap(SkBitmap& bitmap) {
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rand_bitmap_for_canvas(&bitmap);
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SkCanvas canvas(bitmap);
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canvas.clear(0x00000000);
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SkPaint darkPaint;
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darkPaint.setColor(0xFF804020);
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SkPaint lightPaint;
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lightPaint.setColor(0xFF244484);
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const int i = kBitmapSize / 8;
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const SkScalar f = SkIntToScalar(i);
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for (int y = 0; y < kBitmapSize; y += i) {
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for (int x = 0; x < kBitmapSize; x += i) {
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canvas.save();
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canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas.drawRect(SkRect::MakeXYWH(0, 0, f, f), darkPaint);
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canvas.drawRect(SkRect::MakeXYWH(f, 0, f, f), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(0, f, f, f), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(f, f, f, f), darkPaint);
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canvas.restore();
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}
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}
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}
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static const SkBitmap& make_bitmap() {
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static SkBitmap bitmap[2];
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static bool initialized = false;
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if (!initialized) {
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make_g_bitmap(bitmap[0]);
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make_checkerboard_bitmap(bitmap[1]);
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initialized = true;
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}
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return bitmap[R(2)];
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}
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static SkData* make_3Dlut(int* cubeDimension, bool invR, bool invG, bool invB) {
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int size = 4 << R(5);
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SkData* data = SkData::NewUninitialized(sizeof(SkColor) * size * size * size);
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SkColor* pixels = (SkColor*)(data->writable_data());
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SkAutoMalloc lutMemory(size);
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SkAutoMalloc invLutMemory(size);
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uint8_t* lut = (uint8_t*)lutMemory.get();
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uint8_t* invLut = (uint8_t*)invLutMemory.get();
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const int maxIndex = size - 1;
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for (int i = 0; i < size; i++) {
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lut[i] = (i * 255) / maxIndex;
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invLut[i] = ((maxIndex - i) * 255) / maxIndex;
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}
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for (int r = 0; r < size; ++r) {
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for (int g = 0; g < size; ++g) {
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for (int b = 0; b < size; ++b) {
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pixels[(size * ((size * b) + g)) + r] = SkColorSetARGB(0xFF,
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invR ? invLut[r] : lut[r],
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invG ? invLut[g] : lut[g],
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invB ? invLut[b] : lut[b]);
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}
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}
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}
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if (cubeDimension) {
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*cubeDimension = size;
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}
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return data;
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}
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static void drawSomething(SkCanvas* canvas) {
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SkPaint paint;
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canvas->save();
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canvas->scale(0.5f, 0.5f);
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canvas->drawBitmap(make_bitmap(), 0, 0, NULL);
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canvas->restore();
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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canvas->drawCircle(SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/3), paint);
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paint.setColor(SK_ColorBLACK);
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paint.setTextSize(SkIntToScalar(kBitmapSize/3));
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canvas->drawText("Picture", 7, SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint);
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}
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static SkImageFilter* make_image_filter(bool canBeNull = true) {
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SkImageFilter* filter = 0;
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// Add a 1 in 3 chance to get a NULL input
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if (canBeNull && (R(3) == 1)) { return filter; }
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enum { ALPHA_THRESHOLD, MERGE, COLOR, LUT3D, BLUR, MAGNIFIER,
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DOWN_SAMPLE, XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE,
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DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW,
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MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, NUM_FILTERS };
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switch (R(NUM_FILTERS)) {
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case ALPHA_THRESHOLD:
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filter = SkAlphaThresholdFilter::Create(make_region(), make_scalar(), make_scalar());
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break;
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case MERGE:
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filter = SkMergeImageFilter::Create(make_image_filter(), make_image_filter(), make_xfermode());
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break;
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case COLOR:
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{
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SkAutoTUnref<SkColorFilter> cf((R(2) == 1) ?
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SkColorFilter::CreateModeFilter(make_color(), make_xfermode()) :
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SkColorFilter::CreateLightingFilter(make_color(), make_color()));
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filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0;
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}
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break;
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case LUT3D:
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{
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int cubeDimension;
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SkAutoDataUnref lut3D(make_3Dlut(&cubeDimension, (R(2) == 1), (R(2) == 1), (R(2) == 1)));
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SkAutoTUnref<SkColorFilter> cf(SkColorCubeFilter::Create(lut3D, cubeDimension));
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filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0;
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}
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break;
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case BLUR:
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filter = SkBlurImageFilter::Create(make_scalar(true), make_scalar(true), make_image_filter());
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break;
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case MAGNIFIER:
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filter = SkMagnifierImageFilter::Create(make_rect(), make_scalar(true));
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break;
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case DOWN_SAMPLE:
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filter = SkDownSampleImageFilter::Create(make_scalar());
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break;
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case XFERMODE:
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{
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SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(make_xfermode()));
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filter = SkXfermodeImageFilter::Create(mode, make_image_filter(), make_image_filter());
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}
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break;
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case OFFSET:
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filter = SkOffsetImageFilter::Create(make_scalar(), make_scalar(), make_image_filter());
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break;
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case MATRIX:
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filter = SkMatrixImageFilter::Create(make_matrix(),
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(SkFilterQuality)R(4),
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make_image_filter());
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break;
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case MATRIX_CONVOLUTION:
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{
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SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
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SkIntToScalar(kBitmapSize)));
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SkISize size = SkISize::Make(R(10)+1, R(10)+1);
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int arraySize = size.width() * size.height();
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SkTArray<SkScalar> kernel(arraySize);
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for (int i = 0; i < arraySize; ++i) {
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kernel.push_back() = make_scalar();
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}
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SkIPoint kernelOffset = SkIPoint::Make(R(SkIntToScalar(size.width())),
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R(SkIntToScalar(size.height())));
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filter = SkMatrixConvolutionImageFilter::Create(size,
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kernel.begin(),
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make_scalar(),
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make_scalar(),
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kernelOffset,
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(SkMatrixConvolutionImageFilter::TileMode)R(3),
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R(2) == 1,
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make_image_filter(),
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&cropR);
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}
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break;
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case COMPOSE:
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filter = SkComposeImageFilter::Create(make_image_filter(), make_image_filter());
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break;
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case DISTANT_LIGHT:
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filter = (R(2) == 1) ?
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SkLightingImageFilter::CreateDistantLitDiffuse(make_point(),
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make_color(), make_scalar(), make_scalar(), make_image_filter()) :
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SkLightingImageFilter::CreateDistantLitSpecular(make_point(),
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make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)),
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make_image_filter());
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break;
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case POINT_LIGHT:
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filter = (R(2) == 1) ?
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SkLightingImageFilter::CreatePointLitDiffuse(make_point(),
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make_color(), make_scalar(), make_scalar(), make_image_filter()) :
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SkLightingImageFilter::CreatePointLitSpecular(make_point(),
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make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)),
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make_image_filter());
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break;
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case SPOT_LIGHT:
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filter = (R(2) == 1) ?
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SkLightingImageFilter::CreateSpotLitDiffuse(SkPoint3(0, 0, 0),
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make_point(), make_scalar(), make_scalar(), make_color(),
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make_scalar(), make_scalar(), make_image_filter()) :
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SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3(0, 0, 0),
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make_point(), make_scalar(), make_scalar(), make_color(),
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make_scalar(), make_scalar(), SkIntToScalar(R(10)), make_image_filter());
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break;
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case NOISE:
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{
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SkAutoTUnref<SkShader> shader((R(2) == 1) ?
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SkPerlinNoiseShader::CreateFractalNoise(
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make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) :
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SkPerlinNoiseShader::CreateTurbulence(
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make_scalar(true), make_scalar(true), R(10.0f), make_scalar()));
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SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
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SkIntToScalar(kBitmapSize)));
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filter = SkRectShaderImageFilter::Create(shader, &cropR);
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}
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break;
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case DROP_SHADOW:
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filter = SkDropShadowImageFilter::Create(make_scalar(), make_scalar(), make_scalar(true),
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make_scalar(true), make_color(), make_shadow_mode(), make_image_filter(),
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NULL, 0);
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break;
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case MORPHOLOGY:
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if (R(2) == 1) {
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filter = SkDilateImageFilter::Create(R(static_cast<float>(kBitmapSize)),
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R(static_cast<float>(kBitmapSize)), make_image_filter());
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} else {
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filter = SkErodeImageFilter::Create(R(static_cast<float>(kBitmapSize)),
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R(static_cast<float>(kBitmapSize)), make_image_filter());
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}
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break;
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case BITMAP:
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if (R(2) == 1) {
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filter = SkBitmapSource::Create(make_bitmap(), make_rect(), make_rect());
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} else {
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filter = SkBitmapSource::Create(make_bitmap());
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}
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break;
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case DISPLACE:
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filter = SkDisplacementMapEffect::Create(make_channel_selector_type(),
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make_channel_selector_type(), make_scalar(),
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make_image_filter(false), make_image_filter());
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break;
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case TILE:
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filter = SkTileImageFilter::Create(make_rect(), make_rect(), make_image_filter(false));
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break;
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case PICTURE:
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{
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SkRTreeFactory factory;
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SkPictureRecorder recorder;
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SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize),
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SkIntToScalar(kBitmapSize),
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&factory, 0);
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drawSomething(recordingCanvas);
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SkAutoTUnref<SkPicture> pict(recorder.endRecording());
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filter = SkPictureImageFilter::Create(pict.get(), make_rect());
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}
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break;
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default:
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break;
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}
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return (filter || canBeNull) ? filter : make_image_filter(canBeNull);
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}
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static SkImageFilter* make_serialized_image_filter() {
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SkAutoTUnref<SkImageFilter> filter(make_image_filter(false));
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SkAutoTUnref<SkData> data(SkValidatingSerializeFlattenable(filter));
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const unsigned char* ptr = static_cast<const unsigned char*>(data->data());
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size_t len = data->size();
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#ifdef SK_ADD_RANDOM_BIT_FLIPS
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unsigned char* p = const_cast<unsigned char*>(ptr);
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for (size_t i = 0; i < len; ++i, ++p) {
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if (R(250) == 1) { // 0.4% of the time, flip a bit or byte
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if (R(10) == 1) { // Then 10% of the time, change a whole byte
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switch(R(3)) {
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case 0:
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*p ^= 0xFF; // Flip entire byte
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break;
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case 1:
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*p = 0xFF; // Set all bits to 1
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break;
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case 2:
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*p = 0x00; // Set all bits to 0
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break;
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}
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} else {
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*p ^= (1 << R(8));
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}
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}
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}
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#endif // SK_ADD_RANDOM_BIT_FLIPS
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SkFlattenable* flattenable = SkValidatingDeserializeFlattenable(ptr, len,
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SkImageFilter::GetFlattenableType());
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return static_cast<SkImageFilter*>(flattenable);
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}
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static void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) {
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canvas->save();
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canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y),
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SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)));
|
|
canvas->drawBitmap(make_bitmap(), SkIntToScalar(x), SkIntToScalar(y), &paint);
|
|
canvas->restore();
|
|
}
|
|
|
|
static void do_fuzz(SkCanvas* canvas) {
|
|
SkImageFilter* filter = make_serialized_image_filter();
|
|
|
|
#ifdef SK_FUZZER_IS_VERBOSE
|
|
static uint32_t numFilters = 0;
|
|
static uint32_t numValidFilters = 0;
|
|
if (0 == numFilters) {
|
|
printf("Fuzzing with %u\n", kSeed);
|
|
}
|
|
numFilters++;
|
|
if (filter) {
|
|
numValidFilters++;
|
|
}
|
|
printf("Filter no : %u. Valid filters so far : %u\r", numFilters, numValidFilters);
|
|
fflush(stdout);
|
|
#endif
|
|
|
|
SkPaint paint;
|
|
SkSafeUnref(paint.setImageFilter(filter));
|
|
drawClippedBitmap(canvas, 0, 0, paint);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
class ImageFilterFuzzView : public SampleView {
|
|
public:
|
|
ImageFilterFuzzView() {
|
|
this->setBGColor(0xFFDDDDDD);
|
|
}
|
|
|
|
protected:
|
|
// overrides from SkEventSink
|
|
virtual bool onQuery(SkEvent* evt) {
|
|
if (SampleCode::TitleQ(*evt)) {
|
|
SampleCode::TitleR(evt, "ImageFilterFuzzer");
|
|
return true;
|
|
}
|
|
return this->INHERITED::onQuery(evt);
|
|
}
|
|
|
|
void drawBG(SkCanvas* canvas) {
|
|
canvas->drawColor(0xFFDDDDDD);
|
|
}
|
|
|
|
virtual void onDrawContent(SkCanvas* canvas) {
|
|
do_fuzz(canvas);
|
|
this->inval(0);
|
|
}
|
|
|
|
private:
|
|
typedef SkView INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static SkView* MyFactory() { return new ImageFilterFuzzView; }
|
|
static SkViewRegister reg(MyFactory);
|