C++ SkTDArray::count方法代码示例

int tool_main(int argc, char** argv) {
    SetupCrashHandler();
    SkAutoGraphics ag;
    SkCommandLineFlags::Parse(argc, argv);

    const double overhead = estimate_timer_overhead();

    if (FLAGS_verbose) {
        // No header.
    } else if (FLAGS_quiet) {
        SkDebugf("min\tbench\tconfig\n");
    } else {
        SkDebugf("loops\tmin\tmean\tmax\tstddev\tbench\tconfig\n");
    }

    for (const BenchRegistry* r = BenchRegistry::Head(); r != NULL; r = r->next()) {
        SkAutoTDelete<Benchmark> bench(r->factory()(NULL));
        if (SkCommandLineFlags::ShouldSkip(FLAGS_match, bench->getName())) {
            continue;
        }

        SkTDArray<SkSurface*> surfaces;
        SkTDArray<const char*> configs;
        create_surfaces(bench.get(), &surfaces, &configs);

        bench->preDraw();
        for (int j = 0; j < surfaces.count(); j++) {
            SkCanvas* canvas = surfaces[j] ? surfaces[j]->getCanvas() : NULL;
            const char* config = configs[j];

            bench->draw(1, canvas);  // Just paranoid warmup.
            safe_flush(canvas);
            const int loops = guess_loops(overhead, bench.get(), canvas);

            SkAutoTMalloc<double> samples(FLAGS_samples);
            WallTimer timer;
            for (int i = 0; i < FLAGS_samples; i++) {
                timer.start();
                bench->draw(loops, canvas);
                safe_flush(canvas);
                timer.end();
                samples[i] = timer.fWall / loops;
            }

            Stats stats(samples.get(), FLAGS_samples);

            if (FLAGS_verbose) {
                for (int i = 0; i < FLAGS_samples; i++) {
                    SkDebugf("%s  ", humanize(samples[i]).c_str());
                }
                SkDebugf("%s\n", bench->getName());
            } else if (FLAGS_quiet) {
                if (configs.count() == 1) {
                    config = ""; // Only print the config if we run the same bench on more than one.
                }
                SkDebugf("%s\t%s\t%s\n", humanize(stats.min).c_str(), bench->getName(), config);
            } else {
                const double stddev_percent = 100 * sqrt(stats.var) / stats.mean;
                SkDebugf("%d\t%s\t%s\t%s\t%.0f%%\t%s\t%s\n"
                        , loops
                        , humanize(stats.min).c_str()
                        , humanize(stats.mean).c_str()
                        , humanize(stats.max).c_str()
                        , stddev_percent
                        , bench->getName()
                        , config
                        );
            }
        }
        surfaces.deleteAll();
    }

    return 0;
}

void TestRunner::render() {
    SkTaskGroup tg;
    for (int index = 0; index < fRunnables.count(); ++ index) {
        tg.add(fRunnables[index]);
    }
}

    void onDraw(SkCanvas* canvas) override {
        fShader = gBleedRec[fBT].fShaderMaker();

        canvas->clear(SK_ColorGRAY);
        SkTDArray<SkMatrix> matrices;
        // Draw with identity
        *matrices.append() = SkMatrix::I();

        // Draw with rotation and scale down in x, up in y.
        SkMatrix m;
        constexpr SkScalar kBottom = SkIntToScalar(kRow4Y + kBlockSize + kBlockSpacing);
        m.setTranslate(0, kBottom);
        m.preRotate(15.f, 0, kBottom + kBlockSpacing);
        m.preScale(0.71f, 1.22f);
        *matrices.append() = m;

        // Align the next set with the middle of the previous in y, translated to the right in x.
        SkPoint corners[] = {{0, 0}, { 0, kBottom }, { kWidth, kBottom }, {kWidth, 0} };
        matrices[matrices.count()-1].mapPoints(corners, 4);
        SkScalar y = (corners[0].fY + corners[1].fY + corners[2].fY + corners[3].fY) / 4;
        SkScalar x = SkTMax(SkTMax(corners[0].fX, corners[1].fX),
                            SkTMax(corners[2].fX, corners[3].fX));
        m.setTranslate(x, y);
        m.preScale(0.2f, 0.2f);
        *matrices.append() = m;

        SkScalar maxX = 0;
        for (int antiAlias = 0; antiAlias < 2; ++antiAlias) {
            canvas->save();
            canvas->translate(maxX, 0);
            for (int m = 0; m < matrices.count(); ++m) {
                canvas->save();
                canvas->concat(matrices[m]);
                bool aa = SkToBool(antiAlias);

                // First draw a column with no bleeding and no filtering
                this->drawCase1(canvas, kCol0X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase2(canvas, kCol0X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase3(canvas, kCol0X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase4(canvas, kCol0X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase5(canvas, kCol0X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);

                // Then draw a column with no bleeding and low filtering
                this->drawCase1(canvas, kCol1X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase2(canvas, kCol1X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase3(canvas, kCol1X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase4(canvas, kCol1X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase5(canvas, kCol1X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);

                // Then draw a column with no bleeding and high filtering
                this->drawCase1(canvas, kCol2X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase2(canvas, kCol2X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase3(canvas, kCol2X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase4(canvas, kCol2X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase5(canvas, kCol2X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);

                // Then draw a column with bleeding and no filtering (bleed should have no effect w/out blur)
                this->drawCase1(canvas, kCol3X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase2(canvas, kCol3X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase3(canvas, kCol3X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase4(canvas, kCol3X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
                this->drawCase5(canvas, kCol3X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);

                // Then draw a column with bleeding and low filtering
                this->drawCase1(canvas, kCol4X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase2(canvas, kCol4X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase3(canvas, kCol4X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase4(canvas, kCol4X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
                this->drawCase5(canvas, kCol4X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);

                // Finally draw a column with bleeding and high filtering
                this->drawCase1(canvas, kCol5X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase2(canvas, kCol5X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase3(canvas, kCol5X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase4(canvas, kCol5X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
                this->drawCase5(canvas, kCol5X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);

                SkPoint corners[] = { { 0, 0 },{ 0, kBottom },{ kWidth, kBottom },{ kWidth, 0 } };
                matrices[m].mapPoints(corners, 4);
                SkScalar x = kBlockSize + SkTMax(SkTMax(corners[0].fX, corners[1].fX),
                                                 SkTMax(corners[2].fX, corners[3].fX));
                maxX = SkTMax(maxX, x);
                canvas->restore();
            }
            canvas->restore();
        }
    }

    void onDraw(SkCanvas* canvas) override {
        static const char kText[] = "SKIA";
        static const int kTextLen = SK_ARRAY_COUNT(kText) - 1;
        static const int kPointSize = 55;

        SkTDArray<LabeledMatrix> matrices;
        matrices.append()->fMatrix.reset();
        matrices.top().fLabel = "Identity";
        matrices.append()->fMatrix.setScale(1.2f, 0.8f);
        matrices.top().fLabel = "Scale";
        matrices.append()->fMatrix.setRotate(10.f);
        matrices.top().fLabel = "Rotate";
        matrices.append()->fMatrix.reset();
        matrices.top().fMatrix.setPerspX(-0.0015f);
        matrices.top().fMatrix.setPerspY(+0.0015f);
        matrices.top().fLabel = "Persp";

        SkTDArray<LabeledMatrix> localMatrices;
        localMatrices.append()->fMatrix.reset();
        localMatrices.top().fLabel = "Identity";
        localMatrices.append()->fMatrix.setScale(2.5f, 0.2f);
        localMatrices.top().fLabel = "Scale";
        localMatrices.append()->fMatrix.setRotate(45.f);
        localMatrices.top().fLabel = "Rotate";
        localMatrices.append()->fMatrix.reset();
        localMatrices.top().fMatrix.setPerspX(-0.007f);
        localMatrices.top().fMatrix.setPerspY(+0.008f);
        localMatrices.top().fLabel = "Persp";

        static SkBitmap bmp;
        if (bmp.isNull()) {
            makebm(&bmp, kPointSize / 2, kPointSize / 2);
        }

        SkPaint fillPaint;
        fillPaint.setAntiAlias(true);
        sk_tool_utils::set_portable_typeface(&fillPaint);
        fillPaint.setTextSize(SkIntToScalar(kPointSize));
        fillPaint.setFilterQuality(kLow_SkFilterQuality);

        SkPaint outlinePaint;
        outlinePaint.setAntiAlias(true);
        sk_tool_utils::set_portable_typeface(&outlinePaint);
        outlinePaint.setTextSize(SkIntToScalar(kPointSize));
        outlinePaint.setStyle(SkPaint::kStroke_Style);
        outlinePaint.setStrokeWidth(0.f);

        SkScalar w = fillPaint.measureText(kText, kTextLen);
        static SkScalar kPadY = 0.5f * kPointSize;
        static SkScalar kPadX = 1.5f * kPointSize;

        SkPaint strokePaint(fillPaint);
        strokePaint.setStyle(SkPaint::kStroke_Style);
        strokePaint.setStrokeWidth(kPointSize * 0.1f);

        SkPaint labelPaint;
        labelPaint.setColor(0xff000000);
        labelPaint.setAntiAlias(true);
        sk_tool_utils::set_portable_typeface(&labelPaint);
        labelPaint.setTextSize(12.f);

        canvas->translate(15.f, 15.f);
        canvas->drawBitmap(bmp, 0, 0);
        canvas->translate(0, bmp.height() + labelPaint.getTextSize() + 15.f);

        static const char kLabelLabel[] = "localM / canvasM";
        canvas->drawText(kLabelLabel, strlen(kLabelLabel), 0, 0, labelPaint);
        canvas->translate(0, 15.f);

        canvas->save();
        SkScalar maxLabelW = 0;
        canvas->translate(0, kPadY / 2 + kPointSize);
        for (int lm = 0; lm < localMatrices.count(); ++lm) {
            canvas->drawText(matrices[lm].fLabel, strlen(matrices[lm].fLabel),
                             0, labelPaint.getTextSize() - 1, labelPaint);
            SkScalar labelW = labelPaint.measureText(matrices[lm].fLabel,
                                                     strlen(matrices[lm].fLabel));
            maxLabelW = SkMaxScalar(maxLabelW, labelW);
            canvas->translate(0.f, 2 * kPointSize + 2.5f * kPadY);
        }
        canvas->restore();

        canvas->translate(maxLabelW + kPadX / 2.f, 0.f);

        for (int s = 0; s < 2; ++s) {
            SkPaint& paint = s ? strokePaint : fillPaint;

            SkScalar columnH = 0;
            for (int m = 0; m < matrices.count(); ++m) {
                columnH = 0;
                canvas->save();
                canvas->drawText(matrices[m].fLabel, strlen(matrices[m].fLabel),
                                 0, labelPaint.getTextSize() - 1, labelPaint);
                canvas->translate(0, kPadY / 2 + kPointSize);
                columnH += kPadY / 2 + kPointSize;
                for (int lm = 0; lm < localMatrices.count(); ++lm) {
                    paint.setShader(
                            SkShader::CreateBitmapShader(bmp,
                                                         SkShader::kMirror_TileMode,
                                                         SkShader::kRepeat_TileMode,
//.........这里部分代码省略.........

void GrGLProgramBuilder::cleanupShaders(const SkTDArray<GrGLuint>& shaderIDs) {
    for (int i = 0; i < shaderIDs.count(); ++i) {
      GL_CALL(DeleteShader(shaderIDs[i]));
    }
}

// If we're isolating all GPU-bound work to one thread (the default), this function runs all that.
static void run_enclave_and_gpu_tests(SkTArray<Task>* tasks) {
    run_enclave(tasks);
    for (int i = 0; i < gGPUTests.count(); i++) {
        run_test(&gGPUTests[i]);
    }
}

static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
    const int IW = 8;
    const int IH = IW;
    const SkScalar W = SkIntToScalar(IW);
    const SkScalar H = W;

    static const int N = 4;
    SkBitmap bm[N];
    SkPixelRef* refs[N];

    const SkPoint pos[] = {
        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
    };

    // Our convention is that the color components contain the index of their
    // corresponding bitmap/pixelref
    for (int i = 0; i < N; ++i) {
        make_bm(&bm[i], IW, IH, SkColorSetARGB(0xFF, i, i, i), true);
        refs[i] = bm[i].pixelRef();
    }

    static const DrawBitmapProc procs[] = {
        drawbitmap_proc, drawbitmaprect_proc, drawshader_proc
    };

    SkRandom rand;
    for (size_t k = 0; k < SK_ARRAY_COUNT(procs); ++k) {
        SkAutoTUnref<SkPicture> pic(record_bitmaps(bm, pos, N, procs[k]));

        // quick check for a small piece of each quadrant, which should just
        // contain 1 bitmap.
        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
            SkRect r;
            r.set(2, 2, W - 2, H - 2);
            r.offset(pos[i].fX, pos[i].fY);
            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
            REPORTER_ASSERT(reporter, data);
            int count = data->size() / sizeof(SkPixelRef*);
            REPORTER_ASSERT(reporter, 1 == count);
            REPORTER_ASSERT(reporter, *(SkPixelRef**)data->data() == refs[i]);
        }

        // Test a bunch of random (mostly) rects, and compare the gather results
        // with a deduced list of refs by looking at the colors drawn.
        for (int j = 0; j < 100; ++j) {
            SkRect r;
            rand_rect(&r, rand, 2*W, 2*H);

            SkBitmap result;
            draw(pic, r, &result);
            SkTDArray<SkPixelRef*> array;

            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
            size_t dataSize = data ? data->size() : 0;
            int gatherCount = dataSize / sizeof(SkPixelRef*);
            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
            SkAutoDataUnref adu(data);

            gather_from_colors(result, refs, N, &array);

            /*
             *  GatherPixelRefs is conservative, so it can return more bitmaps
             *  that we actually can see (usually because of conservative bounds
             *  inflation for antialiasing). Thus our check here is only that
             *  Gather didn't miss any that we actually saw. Even that isn't
             *  a strict requirement on Gather, which is meant to be quick and
             *  only mostly-correct, but at the moment this test should work.
             */
            for (int i = 0; i < array.count(); ++i) {
                bool found = find(gatherRefs, array[i], gatherCount);
                REPORTER_ASSERT(reporter, found);
#if 0
                // enable this block of code to debug failures, as it will rerun
                // the case that failed.
                if (!found) {
                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
                    size_t dataSize = data ? data->size() : 0;
                }
#endif
            }
        }
    }
}

    /*
        check start and end of each contour
        if not the same, record them
        match them up
        connect closest
        reassemble contour pieces into new path
    */
void Assemble(const SkPathWriter& path, SkPathWriter* simple) {
    SkChunkAlloc allocator(4096);  // FIXME: constant-ize, tune
    SkOpContourHead contour;
    SkOpGlobalState globalState(nullptr, &contour  SkDEBUGPARAMS(nullptr));
#if DEBUG_SHOW_TEST_NAME
    SkDebugf("</div>\n");
#endif
#if DEBUG_PATH_CONSTRUCTION
    SkDebugf("%s\n", __FUNCTION__);
#endif
    SkOpEdgeBuilder builder(path, &contour, &allocator, &globalState);
    builder.finish(&allocator);
    SkTDArray<const SkOpContour* > runs;  // indices of partial contours
    const SkOpContour* eContour = builder.head();
    do {
        if (!eContour->count()) {
            continue;
        }
        const SkPoint& eStart = eContour->start();
        const SkPoint& eEnd = eContour->end();
#if DEBUG_ASSEMBLE
        SkDebugf("%s contour", __FUNCTION__);
        if (!SkDPoint::ApproximatelyEqual(eStart, eEnd)) {
            SkDebugf("[%d]", runs.count());
        } else {
            SkDebugf("   ");
        }
        SkDebugf(" start=(%1.9g,%1.9g) end=(%1.9g,%1.9g)\n",
                eStart.fX, eStart.fY, eEnd.fX, eEnd.fY);
#endif
        if (SkDPoint::ApproximatelyEqual(eStart, eEnd)) {
            eContour->toPath(simple);
            continue;
        }
        *runs.append() = eContour;
    } while ((eContour = eContour->next()));
    int count = runs.count();
    if (count == 0) {
        return;
    }
    SkTDArray<int> sLink, eLink;
    sLink.append(count);
    eLink.append(count);
    int rIndex, iIndex;
    for (rIndex = 0; rIndex < count; ++rIndex) {
        sLink[rIndex] = eLink[rIndex] = SK_MaxS32;
    }
    const int ends = count * 2;  // all starts and ends
    const int entries = (ends - 1) * count;  // folded triangle : n * (n - 1) / 2
    SkTDArray<double> distances;
    distances.append(entries);
    for (rIndex = 0; rIndex < ends - 1; ++rIndex) {
        const SkOpContour* oContour = runs[rIndex >> 1];
        const SkPoint& oPt = rIndex & 1 ? oContour->end() : oContour->start();
        const int row = rIndex < count - 1 ? rIndex * ends : (ends - rIndex - 2)
                * ends - rIndex - 1;
        for (iIndex = rIndex + 1; iIndex < ends; ++iIndex) {
            const SkOpContour* iContour = runs[iIndex >> 1];
            const SkPoint& iPt = iIndex & 1 ? iContour->end() : iContour->start();
            double dx = iPt.fX - oPt.fX;
            double dy = iPt.fY - oPt.fY;
            double dist = dx * dx + dy * dy;
            distances[row + iIndex] = dist;  // oStart distance from iStart
        }
    }
    SkTDArray<int> sortedDist;
    sortedDist.append(entries);
    for (rIndex = 0; rIndex < entries; ++rIndex) {
        sortedDist[rIndex] = rIndex;
    }
    SkTQSort<int>(sortedDist.begin(), sortedDist.end() - 1, DistanceLessThan(distances.begin()));
    int remaining = count;  // number of start/end pairs
    for (rIndex = 0; rIndex < entries; ++rIndex) {
        int pair = sortedDist[rIndex];
        int row = pair / ends;
        int col = pair - row * ends;
        int thingOne = row < col ? row : ends - row - 2;
        int ndxOne = thingOne >> 1;
        bool endOne = thingOne & 1;
        int* linkOne = endOne ? eLink.begin() : sLink.begin();
        if (linkOne[ndxOne] != SK_MaxS32) {
            continue;
        }
        int thingTwo = row < col ? col : ends - row + col - 1;
        int ndxTwo = thingTwo >> 1;
        bool endTwo = thingTwo & 1;
        int* linkTwo = endTwo ? eLink.begin() : sLink.begin();
        if (linkTwo[ndxTwo] != SK_MaxS32) {
            continue;
        }
        SkASSERT(&linkOne[ndxOne] != &linkTwo[ndxTwo]);
        bool flip = endOne == endTwo;
        linkOne[ndxOne] = flip ? ~ndxTwo : ndxTwo;
//.........这里部分代码省略.........

bool SkPaint2GrPaintNoShader(GrContext* context, GrRenderTarget* rt, const SkPaint& skPaint,
                             GrColor paintColor, bool constantColor, GrPaint* grPaint) {

    grPaint->setDither(skPaint.isDither());
    grPaint->setAntiAlias(skPaint.isAntiAlias());

    SkXfermode* mode = skPaint.getXfermode();
    GrXPFactory* xpFactory = nullptr;
    if (!SkXfermode::AsXPFactory(mode, &xpFactory)) {
        // Fall back to src-over
        // return false here?
        xpFactory = GrPorterDuffXPFactory::Create(SkXfermode::kSrcOver_Mode);
    }
    SkASSERT(xpFactory);
    grPaint->setXPFactory(xpFactory)->unref();

    //set the color of the paint to the one of the parameter
    grPaint->setColor(paintColor);

    SkColorFilter* colorFilter = skPaint.getColorFilter();
    if (colorFilter) {
        // if the source color is a constant then apply the filter here once rather than per pixel
        // in a shader.
        if (constantColor) {
            SkColor filtered = colorFilter->filterColor(skPaint.getColor());
            grPaint->setColor(SkColor2GrColor(filtered));
        } else {
            SkTDArray<GrFragmentProcessor*> array;
            // return false if failed?
            if (colorFilter->asFragmentProcessors(context, grPaint->getProcessorDataManager(),
                                                  &array)) {
                for (int i = 0; i < array.count(); ++i) {
                    grPaint->addColorFragmentProcessor(array[i]);
                    array[i]->unref();
                }
            }
        }
    }

#ifndef SK_IGNORE_GPU_DITHER
    // If the dither flag is set, then we need to see if the underlying context
    // supports it. If not, then install a dither effect.
    if (skPaint.isDither() && grPaint->numColorFragmentProcessors() > 0) {
        // What are we rendering into?
        SkASSERT(rt);

        // Suspect the dithering flag has no effect on these configs, otherwise
        // fall back on setting the appropriate state.
        if (GrPixelConfigIs8888(rt->config()) ||
            GrPixelConfigIs8888(rt->config())) {
            // The dither flag is set and the target is likely
            // not going to be dithered by the GPU.
            SkAutoTUnref<GrFragmentProcessor> fp(GrDitherEffect::Create());
            if (fp.get()) {
                grPaint->addColorFragmentProcessor(fp);
                grPaint->setDither(false);
            }
        }
    }
#endif
    return true;
}

 SkPath makePath() {
     SkPath path;
     for (uint32_t cIndex = 0; cIndex < fPathContourCount; ++cIndex) {
         uint32_t segments = makeSegmentCount();
         for (uint32_t sIndex = 0; sIndex < segments; ++sIndex) {
             RandomAddPath addPathType = makeAddPathType();
             ++fAddCount;
             if (fPrintName) {
                 SkDebugf("%.*s%s\n", fPathDepth * 3, fTab,
                          gRandomAddPathNames[addPathType]);
             }
             switch (addPathType) {
             case kAddArc: {
                 SkRect oval = makeRect();
                 SkScalar startAngle = makeAngle();
                 SkScalar sweepAngle = makeAngle();
                 path.addArc(oval, startAngle, sweepAngle);
                 validate(path);
             }
             break;
             case kAddRoundRect1: {
                 SkRect rect = makeRect();
                 SkScalar rx = makeScalar(), ry = makeScalar();
                 SkPath::Direction dir = makeDirection();
                 path.addRoundRect(rect, rx, ry, dir);
                 validate(path);
             }
             break;
             case kAddRoundRect2: {
                 SkRect rect = makeRect();
                 SkScalar radii[8];
                 makeScalarArray(SK_ARRAY_COUNT(radii), radii);
                 SkPath::Direction dir = makeDirection();
                 path.addRoundRect(rect, radii, dir);
                 validate(path);
             }
             break;
             case kAddRRect: {
                 SkRRect rrect = makeRRect();
                 SkPath::Direction dir = makeDirection();
                 path.addRRect(rrect, dir);
                 validate(path);
             }
             break;
             case kAddPoly: {
                 SkTDArray<SkPoint> points;
                 makePointArray(&points);
                 bool close = makeBool();
                 path.addPoly(&points[0], points.count(), close);
                 validate(path);
             }
             break;
             case kAddPath1:
                 if (fPathDepth < fPathDepthLimit) {
                     ++fPathDepth;
                     SkPath src = makePath();
                     validate(src);
                     SkScalar dx = makeScalar();
                     SkScalar dy = makeScalar();
                     SkPath::AddPathMode mode = makeAddPathMode();
                     path.addPath(src, dx, dy, mode);
                     --fPathDepth;
                     validate(path);
                 }
                 break;
             case kAddPath2:
                 if (fPathDepth < fPathDepthLimit) {
                     ++fPathDepth;
                     SkPath src = makePath();
                     validate(src);
                     SkPath::AddPathMode mode = makeAddPathMode();
                     path.addPath(src, mode);
                     --fPathDepth;
                     validate(path);
                 }
                 break;
             case kAddPath3:
                 if (fPathDepth < fPathDepthLimit) {
                     ++fPathDepth;
                     SkPath src = makePath();
                     validate(src);
                     SkMatrix matrix = makeMatrix();
                     SkPath::AddPathMode mode = makeAddPathMode();
                     path.addPath(src, matrix, mode);
                     --fPathDepth;
                     validate(path);
                 }
                 break;
             case kReverseAddPath:
                 if (fPathDepth < fPathDepthLimit) {
                     ++fPathDepth;
                     SkPath src = makePath();
                     validate(src);
                     path.reverseAddPath(src);
                     --fPathDepth;
                     validate(path);
                 }
                 break;
             case kMoveToPath: {
                 SkScalar x = makeScalar();
//.........这里部分代码省略.........

int dm_main() {
    setbuf(stdout, nullptr);
    setup_crash_handler();

    if (FLAGS_verbose) {
        gVLog = stderr;
    } else if (!FLAGS_writePath.isEmpty()) {
        sk_mkdir(FLAGS_writePath[0]);
        gVLog = freopen(SkOSPath::Join(FLAGS_writePath[0], "verbose.log").c_str(), "w", stderr);
    }

    if (FLAGS_forceSRGB) {
        gDefaultProfileIsSRGB = true;
    }

    JsonWriter::DumpJson();  // It's handy for the bots to assume this is ~never missing.
    SkAutoGraphics ag;
    SkTaskGroup::Enabler enabled(FLAGS_threads);
    gCreateTypefaceDelegate = &create_from_name;

    {
        SkString testResourcePath = GetResourcePath("color_wheel.png");
        SkFILEStream testResource(testResourcePath.c_str());
        if (!testResource.isValid()) {
            info("Some resources are missing.  Do you need to set --resourcePath?\n");
        }
    }
    gather_gold();
    gather_uninteresting_hashes();

    if (!gather_srcs()) {
        return 1;
    }
    if (!gather_sinks()) {
        return 1;
    }
    gather_tests();
    gPending = gSrcs.count() * gSinks.count() + gParallelTests.count() + gSerialTests.count();
    info("%d srcs * %d sinks + %d tests == %d tasks",
         gSrcs.count(), gSinks.count(), gParallelTests.count() + gSerialTests.count(), gPending);
    SkAutoTDelete<SkThread> statusThread(start_status_thread());

    // Kick off as much parallel work as we can, making note of any serial work we'll need to do.
    SkTaskGroup parallel;
    SkTArray<Task> serial;

    for (auto& sink : gSinks)
    for (auto&  src : gSrcs) {
        if (src->veto(sink->flags()) ||
            is_blacklisted(sink.tag.c_str(), src.tag.c_str(),
                           src.options.c_str(), src->name().c_str())) {
            SkAutoTAcquire<SkSpinlock> lock(gMutex);
            gPending--;
            continue;
        }

        Task task(src, sink);
        if (src->serial() || sink->serial()) {
            serial.push_back(task);
        } else {
            parallel.add([task] { Task::Run(task); });
        }
    }
    for (auto test : gParallelTests) {
        parallel.add([test] { run_test(test); });
    }

    // With the parallel work running, run serial tasks and tests here on main thread.
    for (auto task : serial) { Task::Run(task); }
    for (auto test : gSerialTests) { run_test(test); }

    // Wait for any remaining parallel work to complete (including any spun off of serial tasks).
    parallel.wait();
    gDefinitelyThreadSafeWork.wait();

    // We'd better have run everything.
    SkASSERT(gPending == 0);
    // Make sure we've flushed all our results to disk.
    JsonWriter::DumpJson();

    // At this point we're back in single-threaded land.
    sk_tool_utils::release_portable_typefaces();

    if (gFailures.count() > 0) {
        info("Failures:\n");
        for (int i = 0; i < gFailures.count(); i++) {
            info("\t%s\n", gFailures[i].c_str());
        }
        info("%d failures\n", gFailures.count());
        return 1;
    }

#ifdef SK_PDF_IMAGE_STATS
    SkPDFImageDumpStats();
#endif  // SK_PDF_IMAGE_STATS

    print_status();
    info("Finished!\n");
    return 0;
}

static void output_font(SkTypeface* face, const char* name, SkTypeface::Style style,
        const char* used, FILE* out) {
    int emSize = face->getUnitsPerEm() * 2;
    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setTextAlign(SkPaint::kLeft_Align);
    paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
    paint.setTextSize(emSize);
    SkSafeUnref(paint.setTypeface(face));
    SkTDArray<SkPath::Verb> verbs;
    SkTDArray<unsigned> charCodes;
    SkTDArray<SkScalar> widths;
    SkString ptsOut;
    output_path_data(paint, used, emSize, &ptsOut, &verbs, &charCodes, &widths);
    SkString fontnameStr(name);
    SkString strippedStr = strip_spaces(fontnameStr);
    strippedStr.appendf("%s", gStyleName[style]);
    const char* fontname = strippedStr.c_str();
    fprintf(out, "const SkScalar %sPoints[] = {\n", fontname);
    ptsOut = strip_final(ptsOut);
    fprintf(out, "%s", ptsOut.c_str());
    fprintf(out, "\n};\n\n");
    fprintf(out, "const unsigned char %sVerbs[] = {\n", fontname);
    int verbCount = verbs.count();
    int outChCount = 0;
    for (int index = 0; index < verbCount;) {
        SkPath::Verb verb = verbs[index];
        SkASSERT(verb >= SkPath::kMove_Verb && verb <= SkPath::kDone_Verb);
        SkASSERT((unsigned) verb == (unsigned char) verb);
        fprintf(out, "%u", verb);
        if (++index < verbCount) {
            outChCount += 3;
            fprintf(out, "%c", ',');
            if (outChCount >= kMaxLineLength) {
                outChCount = 0;
                fprintf(out, "%c", '\n');
            } else {
                fprintf(out, "%c", ' ');
            }
        }
    }
    fprintf(out, "\n};\n\n");
    
    fprintf(out, "const unsigned %sCharCodes[] = {\n", fontname);
    int offsetCount = charCodes.count();
    for (int index = 0; index < offsetCount;) {
        unsigned offset = charCodes[index];
        fprintf(out, "%u", offset);
        if (++index < offsetCount) {
            outChCount += offset_str_len(offset) + 2;
            fprintf(out, "%c", ',');
            if (outChCount >= kMaxLineLength) {
                outChCount = 0;
                fprintf(out, "%c", '\n');
            } else {
                fprintf(out, "%c", ' ');
            }
        }
    }
    fprintf(out, "\n};\n\n");
    
    SkString widthsStr;
    fprintf(out, "const SkFixed %sWidths[] = {\n", fontname);
    for (int index = 0; index < offsetCount; ++index) {
        output_fixed(widths[index], emSize, &widthsStr);
    }
    widthsStr = strip_final(widthsStr);
    fprintf(out, "%s\n};\n\n", widthsStr.c_str());
    
    fprintf(out, "const int %sCharCodesCount = (int) SK_ARRAY_COUNT(%sCharCodes);\n\n",
            fontname, fontname);

    SkPaint::FontMetrics metrics;
    paint.getFontMetrics(&metrics);
    fprintf(out, "const SkPaint::FontMetrics %sMetrics = {\n", fontname);
    SkString metricsStr;
    metricsStr.printf("0x%08x, ", metrics.fFlags);
    output_scalar(metrics.fTop, emSize, &metricsStr);
    output_scalar(metrics.fAscent, emSize, &metricsStr);
    output_scalar(metrics.fDescent, emSize, &metricsStr);
    output_scalar(metrics.fBottom, emSize, &metricsStr);
    output_scalar(metrics.fLeading, emSize, &metricsStr);
    output_scalar(metrics.fAvgCharWidth, emSize, &metricsStr);
    output_scalar(metrics.fMaxCharWidth, emSize, &metricsStr);
    output_scalar(metrics.fXMin, emSize, &metricsStr);
    output_scalar(metrics.fXMax, emSize, &metricsStr);
    output_scalar(metrics.fXHeight, emSize, &metricsStr);
    output_scalar(metrics.fCapHeight, emSize, &metricsStr);
    output_scalar(metrics.fUnderlineThickness, emSize, &metricsStr);
    output_scalar(metrics.fUnderlinePosition, emSize, &metricsStr);
    metricsStr = strip_final(metricsStr);
    fprintf(out, "%s\n};\n\n", metricsStr.c_str());
}

void SkCommandLineFlags::Parse(int argc, char** argv) {
    // Only allow calling this function once.
    static bool gOnce;
    if (gOnce) {
        SkDebugf("Parse should only be called once at the beginning of main!\n");
        SkASSERT(false);
        return;
    }
    gOnce = true;

    bool helpPrinted = false;
    bool flagsPrinted = false;
    // Loop over argv, starting with 1, since the first is just the name of the program.
    for (int i = 1; i < argc; i++) {
        if (0 == strcmp("-h", argv[i]) || 0 == strcmp("--help", argv[i])) {
            // Print help message.
            SkTDArray<const char*> helpFlags;
            for (int j = i + 1; j < argc; j++) {
                if (SkStrStartsWith(argv[j], '-')) {
                    break;
                }
                helpFlags.append(1, &argv[j]);
            }
            if (0 == helpFlags.count()) {
                // Only print general help message if help for specific flags is not requested.
                SkDebugf("%s\n%s\n", argv[0], gUsage.c_str());
            }
            if (!flagsPrinted) {
                SkDebugf("Flags:\n");
                flagsPrinted = true;
            }
            if (0 == helpFlags.count()) {
                // If no flags followed --help, print them all
                SkTDArray<SkFlagInfo*> allFlags;
                for (SkFlagInfo* flag = SkCommandLineFlags::gHead; flag;
                     flag = flag->next()) {
                    allFlags.push(flag);
                }
                SkTQSort(&allFlags[0], &allFlags[allFlags.count() - 1],
                         CompareFlagsByName());
                for (int i = 0; i < allFlags.count(); ++i) {
                    print_help_for_flag(allFlags[i]);
                    if (allFlags[i]->extendedHelp().size() > 0) {
                        SkDebugf("        Use '--help %s' for more information.\n",
                                 allFlags[i]->name().c_str());
                    }
                }
            } else {
                for (SkFlagInfo* flag = SkCommandLineFlags::gHead; flag;
                     flag = flag->next()) {
                    for (int k = 0; k < helpFlags.count(); k++) {
                        if (flag->name().equals(helpFlags[k]) ||
                            flag->shortName().equals(helpFlags[k])) {
                            print_extended_help_for_flag(flag);
                            helpFlags.remove(k);
                            break;
                        }
                    }
                }
            }
            if (helpFlags.count() > 0) {
                SkDebugf("Requested help for unrecognized flags:\n");
                for (int k = 0; k < helpFlags.count(); k++) {
                    SkDebugf("    --%s\n", helpFlags[k]);
                }
            }
            helpPrinted = true;
        }
        if (!helpPrinted) {
            SkFlagInfo* matchedFlag = nullptr;
            SkFlagInfo* flag = gHead;
            int startI = i;
            while (flag != nullptr) {
                if (flag->match(argv[startI])) {
                    i = startI;
                    if (matchedFlag) {
                        // Don't redefine the same flag with different types.
                        SkASSERT(matchedFlag->getFlagType() == flag->getFlagType());
                    } else {
                        matchedFlag = flag;
                    }
                    switch (flag->getFlagType()) {
                        case SkFlagInfo::kBool_FlagType:
                            // Can be handled by match, above, but can also be set by the next
                            // string.
                            if (i+1 < argc && !SkStrStartsWith(argv[i+1], '-')) {
                                i++;
                                bool value;
                                if (parse_bool_arg(argv[i], &value)) {
                                    flag->setBool(value);
                                }
                            }
                            break;
                        case SkFlagInfo::kString_FlagType:
                            flag->resetStrings();
                            // Add all arguments until another flag is reached.
                            while (i+1 < argc) {
                                char* end = nullptr;
                                // Negative numbers aren't flags.
                                ignore_result(strtod(argv[i+1], &end));
//.........这里部分代码省略.........

void SkDisplayMath::executeFunction(SkDisplayable* target, int index,
        SkTDArray<SkScriptValue>& parameters, SkDisplayTypes type,
        SkScriptValue* scriptValue) {
    if (scriptValue == NULL)
        return;
    SkASSERT(target == this);
    SkScriptValue* array = parameters.begin();
    SkScriptValue* end = parameters.end();
    SkScalar input = parameters[0].fOperand.fScalar;
    SkScalar scalarResult;
    switch (index) {
        case SK_FUNCTION(abs):
            scalarResult = SkScalarAbs(input);
            break;
        case SK_FUNCTION(acos):
            scalarResult = SkScalarACos(input);
            break;
        case SK_FUNCTION(asin):
            scalarResult = SkScalarASin(input);
            break;
        case SK_FUNCTION(atan):
            scalarResult = SkScalarATan2(input, SK_Scalar1);
            break;
        case SK_FUNCTION(atan2):
            scalarResult = SkScalarATan2(input, parameters[1].fOperand.fScalar);
            break;
        case SK_FUNCTION(ceil):
            scalarResult = SkScalarCeilToScalar(input);
            break;
        case SK_FUNCTION(cos):
            scalarResult = SkScalarCos(input);
            break;
        case SK_FUNCTION(exp):
            scalarResult = SkScalarExp(input);
            break;
        case SK_FUNCTION(floor):
            scalarResult = SkScalarFloorToScalar(input);
            break;
        case SK_FUNCTION(log):
            scalarResult = SkScalarLog(input);
            break;
        case SK_FUNCTION(max):
            scalarResult = -SK_ScalarMax;
            while (array < end) {
                scalarResult = SkMaxScalar(scalarResult, array->fOperand.fScalar);
                array++;
            }
            break;
        case SK_FUNCTION(min):
            scalarResult = SK_ScalarMax;
            while (array < end) {
                scalarResult = SkMinScalar(scalarResult, array->fOperand.fScalar);
                array++;
            }
            break;
        case SK_FUNCTION(pow):
            // not the greatest -- but use x^y = e^(y * ln(x))
            scalarResult = SkScalarLog(input);
            scalarResult = SkScalarMul(parameters[1].fOperand.fScalar, scalarResult);
            scalarResult = SkScalarExp(scalarResult);
            break;
        case SK_FUNCTION(random):
            scalarResult = fRandom.nextUScalar1();
            break;
        case SK_FUNCTION(round):
            scalarResult = SkScalarRoundToScalar(input);
            break;
        case SK_FUNCTION(sin):
            scalarResult = SkScalarSin(input);
            break;
        case SK_FUNCTION(sqrt): {
            SkASSERT(parameters.count() == 1);
            SkASSERT(type == SkType_Float);
            scalarResult = SkScalarSqrt(input);
            } break;
        case SK_FUNCTION(tan):
            scalarResult = SkScalarTan(input);
            break;
        default:
            SkASSERT(0);
            scalarResult = SK_ScalarNaN;
    }
    scriptValue->fOperand.fScalar = scalarResult;
    scriptValue->fType = SkType_Float;
}

/*  Load info from a configuration file that populates the system/fallback font structures
*/
static void load_font_info() {
    SkTDArray<FontFamily*> fontFamilies;
    if (gTestMainConfigFile) {
        getTestFontFamilies(fontFamilies, gTestMainConfigFile, gTestFallbackConfigFile);
    } else {
        getFontFamilies(fontFamilies);
    }

    SkTDArray<FontInitRec> fontInfo;
    bool firstInFamily = false;
    for (int i = 0; i < fontFamilies.count(); ++i) {
        FontFamily *family = fontFamilies[i];
        firstInFamily = true;
        for (int j = 0; j < family->fFileNames.count(); ++j) {
            FontInitRec fontInfoRecord;
            fontInfoRecord.fFileName = family->fFileNames[j];
            if (j == 0) {
                if (family->fNames.count() == 0) {
                    // Fallback font
                    fontInfoRecord.fNames = (char **)gFBNames;
                } else {
                    SkTDArray<const char*> names = family->fNames;
                    const char **nameList = (const char**)
                            malloc((names.count() + 1) * sizeof(char*));
                    if (nameList == NULL) {
                        // shouldn't get here
                        SkDEBUGFAIL("Failed to allocate nameList");
                        break;
                    }
                    if (gDefaultNames == NULL) {
                        gDefaultNames = (char**) nameList;
                    }
                    for (int i = 0; i < names.count(); ++i) {
                        nameList[i] = names[i];
                    }
                    nameList[names.count()] = NULL;
                    fontInfoRecord.fNames = nameList;
                }
            } else {
                fontInfoRecord.fNames = NULL;
            }
            *fontInfo.append() = fontInfoRecord;
        }
    }
    gNumSystemFonts = fontInfo.count();
    gSystemFonts = (FontInitRec*) malloc(gNumSystemFonts * sizeof(FontInitRec));
    gFallbackFonts = (uint32_t*) malloc((gNumSystemFonts + 1) * sizeof(uint32_t));
    if (gSystemFonts == NULL) {
        // shouldn't get here
        SkDEBUGFAIL("No system fonts were found");
        gNumSystemFonts = 0;
    }

#if SK_DEBUG_FONTS
    SkDebugf("---- We have %d system fonts", gNumSystemFonts);
#endif
    for (size_t i = 0; i < gNumSystemFonts; ++i) {
        gSystemFonts[i].fFileName = fontInfo[i].fFileName;
        gSystemFonts[i].fNames = fontInfo[i].fNames;
#if SK_DEBUG_FONTS
        SkDebugf("---- gSystemFonts[%d] fileName=%s", i, fontInfo[i].fFileName);
#endif
    }
    fontFamilies.deleteAll();
}