void draw(SkCanvas* canvas) {

    bool forceRaster = false;

    bool dither = false;

    bool postDither = false;

​

    canvas->clear(SK_ColorTRANSPARENT);

    SkPaint grayPaint;

    grayPaint.setColor(SK_ColorGRAY);

    SkPaint ltGrayPaint;

    ltGrayPaint.setColor(SK_ColorLTGRAY);

    canvas->drawRect({350, 0, 400, 480}, ltGrayPaint);

    canvas->drawRect({400, 0, 500, 480}, grayPaint);

    canvas->drawRect({500, 0, 640, 480}, SkPaint());

    canvas->drawRect({0, 200, 320, 215}, ltGrayPaint);

    canvas->drawRect({0, 215, 320, 230}, grayPaint);

    canvas->drawRect({0, 230, 320, 250}, SkPaint());

​

    sk_sp<SkSurface> surf;

    auto ii = SkImageInfo::Make(650, 480, kARGB_4444_SkColorType, kPremul_SkAlphaType);

    if (canvas->recordingContext() && !forceRaster) {

        surf = SkSurfaces::RenderTarget(canvas->recordingContext(), skgpu::Budgeted::kNo, ii);

    } else {

        surf = SkSurfaces::Raster(ii);

    }

    if (!surf) {

        return;

    }

​

    auto c = surf->getCanvas();

    c->clear(SK_ColorTRANSPARENT);

​

    SkPaint blrPaint;

    blrPaint.setAntiAlias(true);

    blrPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 12.047));

    blrPaint.setBlendMode(SkBlendMode::kSrc);

    blrPaint.setDither(dither);

​

    blrPaint.setColor(SK_ColorWHITE);

    c->drawRect(SkRect{0, 20, 640, 104}, blrPaint);

​

    blrPaint.setColor(SkColorSetARGB(255, 247, 247, 247));

    c->drawRect(SkRect{0, 0, 640, 84}.makeOffset(0, 300), blrPaint);

​

    static constexpr SkColor colors[]{SkColorSetARGB(255, 247, 247, 247), 0};

    static constexpr SkPoint pts[]{{0.5, 0}, {256.5, 0}};

    auto grd = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkTileMode::kClamp);

    SkPaint grdPaint;

    grdPaint.setShader(grd);

    grdPaint.setDither(dither);

​

    c->drawRect(SkRect{0, 0, 640, 100}.makeOffset(0, 150), grdPaint);

​

    SkPaint postPaint;

    postPaint.setDither(postDither);

    surf->draw(canvas, 0, 0, SkSamplingOptions(), &postPaint);

}