C++ SkRef函数代码示例

void SkPDFCanon::addPDFBitmap(uint32_t imageUniqueID, SkPDFObject* pdfBitmap) {
    fPDFBitmapMap.set(imageUniqueID, SkRef(pdfBitmap));
}

void GrAtlasTextBatch::onPrepareDraws(Target* target) const {
    // if we have RGB, then we won't have any SkShaders so no need to use a localmatrix.
    // TODO actually only invert if we don't have RGBA
    SkMatrix localMatrix;
    if (this->usesLocalCoords() && !this->viewMatrix().invert(&localMatrix)) {
        SkDebugf("Cannot invert viewmatrix\n");
        return;
    }

    GrTexture* texture = fFontCache->getTexture(this->maskFormat());
    if (!texture) {
        SkDebugf("Could not allocate backing texture for atlas\n");
        return;
    }

    GrMaskFormat maskFormat = this->maskFormat();

    FlushInfo flushInfo;
    if (this->usesDistanceFields()) {
        flushInfo.fGeometryProcessor.reset(
            this->setupDfProcessor(this->viewMatrix(), fFilteredColor, this->color(), texture));
    } else {
        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode);
        flushInfo.fGeometryProcessor.reset(
            GrBitmapTextGeoProc::Create(this->color(),
                                        texture,
                                        params,
                                        maskFormat,
                                        localMatrix,
                                        this->usesLocalCoords()));
    }

    flushInfo.fGlyphsToFlush = 0;
    size_t vertexStride = flushInfo.fGeometryProcessor->getVertexStride();
    SkASSERT(vertexStride == GrAtlasTextBlob::GetVertexStride(maskFormat));

    int glyphCount = this->numGlyphs();
    const GrBuffer* vertexBuffer;

    void* vertices = target->makeVertexSpace(vertexStride,
                                             glyphCount * kVerticesPerGlyph,
                                             &vertexBuffer,
                                             &flushInfo.fVertexOffset);
    flushInfo.fVertexBuffer.reset(SkRef(vertexBuffer));
    flushInfo.fIndexBuffer.reset(target->resourceProvider()->refQuadIndexBuffer());
    if (!vertices || !flushInfo.fVertexBuffer) {
        SkDebugf("Could not allocate vertices\n");
        return;
    }

    unsigned char* currVertex = reinterpret_cast<unsigned char*>(vertices);

    // We cache some values to avoid going to the glyphcache for the same fontScaler twice
    // in a row
    const SkDescriptor* desc = nullptr;
    SkGlyphCache* cache = nullptr;
    GrFontScaler* scaler = nullptr;
    SkTypeface* typeface = nullptr;

    GrBlobRegenHelper helper(this, target, &flushInfo);

    for (int i = 0; i < fGeoCount; i++) {
        const Geometry& args = fGeoData[i];
        Blob* blob = args.fBlob;
        size_t byteCount;
        void* blobVertices;
        int subRunGlyphCount;
        blob->regenInBatch(target, fFontCache, &helper, args.fRun, args.fSubRun, &cache,
                           &typeface, &scaler, &desc, vertexStride, args.fViewMatrix, args.fX,
                           args.fY, args.fColor, &blobVertices, &byteCount, &subRunGlyphCount);

        // now copy all vertices
        memcpy(currVertex, blobVertices, byteCount);

#ifdef SK_DEBUG
        // bounds sanity check
        SkRect rect;
        rect.setLargestInverted();
        SkPoint* vertex = (SkPoint*) ((char*)blobVertices);
        rect.growToInclude(vertex, vertexStride, kVerticesPerGlyph * subRunGlyphCount);

        if (this->usesDistanceFields()) {
            args.fViewMatrix.mapRect(&rect);
        }
        SkASSERT(fBounds.contains(rect));
#endif

        currVertex += byteCount;
    }

    // Make sure to attach the last cache if applicable
    if (cache) {
        SkGlyphCache::AttachCache(cache);
    }
    this->flush(target, &flushInfo);
}

void GrStencilAndCoverTextContext::init(GrRenderTarget* rt,
                                        const GrClip& clip,
                                        const GrPaint& paint,
                                        const SkPaint& skPaint,
                                        size_t textByteLength,
                                        RenderMode renderMode,
                                        const SkMatrix& viewMatrix,
                                        const SkIRect& regionClipBounds) {
    fClip = clip;

    fRenderTarget.reset(SkRef(rt));

    fRegionClipBounds = regionClipBounds;
    fClip.getConservativeBounds(fRenderTarget->width(), fRenderTarget->height(), &fClipRect);

    fPaint = paint;
    fSkPaint = skPaint;

    fContextInitialMatrix = viewMatrix;
    fViewMatrix = viewMatrix;
    fLocalMatrix = SkMatrix::I();

    const bool otherBackendsWillDrawAsPaths =
        SkDraw::ShouldDrawTextAsPaths(skPaint, fContextInitialMatrix);

    fUsingDeviceSpaceGlyphs = !otherBackendsWillDrawAsPaths &&
                              kMaxAccuracy_RenderMode == renderMode &&
                              SkToBool(fContextInitialMatrix.getType() &
                                       (SkMatrix::kScale_Mask | SkMatrix::kAffine_Mask));

    if (fUsingDeviceSpaceGlyphs) {
        // SkDraw::ShouldDrawTextAsPaths takes care of perspective transforms.
        SkASSERT(!fContextInitialMatrix.hasPerspective());

        // The whole shape (including stroke) will be baked into the glyph outlines. Make
        // NVPR just fill the baked shapes.
        fStroke = GrStrokeInfo(SkStrokeRec::kFill_InitStyle);

        fTextRatio = fTextInverseRatio = 1.0f;

        // Glyphs loaded by GPU path rendering have an inverted y-direction.
        SkMatrix m;
        m.setScale(1, -1);
        fViewMatrix = m;

        // Post-flip the initial matrix so we're left with just the flip after
        // the paint preConcats the inverse.
        m = fContextInitialMatrix;
        m.postScale(1, -1);
        if (!m.invert(&fLocalMatrix)) {
            SkDebugf("Not invertible!\n");
            return;
        }

        fGlyphCache = fSkPaint.detachCache(&fSurfaceProps, &fContextInitialMatrix,
                                           true /*ignoreGamma*/);
        fGlyphs = get_gr_glyphs(fContext, fGlyphCache->getScalerContext()->getTypeface(),
                                &fGlyphCache->getDescriptor(), fStroke);
    } else {
        // Don't bake strokes into the glyph outlines. We will stroke the glyphs
        // using the GPU instead. This is the fast path.
        fStroke = GrStrokeInfo(fSkPaint);
        fSkPaint.setStyle(SkPaint::kFill_Style);

        if (fStroke.isHairlineStyle()) {
            // Approximate hairline stroke.
            SkScalar strokeWidth = SK_Scalar1 /
                (SkVector::Make(fContextInitialMatrix.getScaleX(),
                                fContextInitialMatrix.getSkewY()).length());
            fStroke.setStrokeStyle(strokeWidth, false /*strokeAndFill*/);

        } else if (fSkPaint.isFakeBoldText() &&
#ifdef SK_USE_FREETYPE_EMBOLDEN
                   kMaxPerformance_RenderMode == renderMode &&
#endif
                   SkStrokeRec::kStroke_Style != fStroke.getStyle()) {

            // Instead of baking fake bold into the glyph outlines, do it with the GPU stroke.
            SkScalar fakeBoldScale = SkScalarInterpFunc(fSkPaint.getTextSize(),
                                                        kStdFakeBoldInterpKeys,
                                                        kStdFakeBoldInterpValues,
                                                        kStdFakeBoldInterpLength);
            SkScalar extra = SkScalarMul(fSkPaint.getTextSize(), fakeBoldScale);
            fStroke.setStrokeStyle(fStroke.needToApply() ? fStroke.getWidth() + extra : extra,
                                   true /*strokeAndFill*/);

            fSkPaint.setFakeBoldText(false);
        }

        bool canUseRawPaths;
        if (!fStroke.isDashed() && (otherBackendsWillDrawAsPaths ||
                                    kMaxPerformance_RenderMode == renderMode)) {
            // We can draw the glyphs from canonically sized paths.
            fTextRatio = fSkPaint.getTextSize() / SkPaint::kCanonicalTextSizeForPaths;
            fTextInverseRatio = SkPaint::kCanonicalTextSizeForPaths / fSkPaint.getTextSize();

            // Compensate for the glyphs being scaled by fTextRatio.
            if (!fStroke.isFillStyle()) {
                fStroke.setStrokeStyle(fStroke.getWidth() / fTextRatio,
                                       SkStrokeRec::kStrokeAndFill_Style == fStroke.getStyle());
//.........这里部分代码省略.........

SkColorCubeFilter::SkColorCubeFilter(SkData* cubeData, int cubeDimension)
  : fCubeData(SkRef(cubeData))
  , fUniqueID(SkNextColorCubeUniqueID())
  , fCache(cubeDimension) {
}

 SkTypeface* createTypeface(int index) override {
     SkASSERT(index < fStyles.count());
     return SkRef(fStyles[index].get());
 }

 SkSpecialImage_Image(SkImageFilter::Proxy* proxy, const SkIRect& subset, const SkImage* image)
     : INHERITED(proxy, subset, image->uniqueID())
     , fImage(SkRef(image)) {
 }

SkScalerContext_DW::SkScalerContext_DW(DWriteFontTypeface* typeface,
                                       const SkScalerContextEffects& effects,
                                       const SkDescriptor* desc)
        : SkScalerContext(typeface, effects, desc)
        , fTypeface(SkRef(typeface))
        , fGlyphCount(-1) {

#if SK_HAS_DWRITE_2_H
    fTypeface->fFactory->QueryInterface<IDWriteFactory2>(&fFactory2);

    SkTScopedComPtr<IDWriteFontFace2> fontFace2;
    fTypeface->fDWriteFontFace->QueryInterface<IDWriteFontFace2>(&fontFace2);
    fIsColorFont = fFactory2.get() && fontFace2.get() && fontFace2->IsColorFont();
#endif

    // In general, all glyphs should use CLEARTYPE_NATURAL_SYMMETRIC
    // except when bi-level rendering is requested or there are embedded
    // bi-level bitmaps (and the embedded bitmap flag is set and no rotation).
    //
    // DirectWrite's IDWriteFontFace::GetRecommendedRenderingMode does not do
    // this. As a result, determine the actual size of the text and then see if
    // there are any embedded bi-level bitmaps of that size. If there are, then
    // force bitmaps by requesting bi-level rendering.
    //
    // FreeType allows for separate ppemX and ppemY, but DirectWrite assumes
    // square pixels and only uses ppemY. Therefore the transform must track any
    // non-uniform x-scale.
    //
    // Also, rotated glyphs should have the same absolute advance widths as
    // horizontal glyphs and the subpixel flag should not affect glyph shapes.

    SkVector scale;
    SkMatrix GsA;
    fRec.computeMatrices(SkScalerContextRec::kVertical_PreMatrixScale,
                         &scale, &fSkXform, &GsA, &fG_inv);

    fXform.m11 = SkScalarToFloat(fSkXform.getScaleX());
    fXform.m12 = SkScalarToFloat(fSkXform.getSkewY());
    fXform.m21 = SkScalarToFloat(fSkXform.getSkewX());
    fXform.m22 = SkScalarToFloat(fSkXform.getScaleY());
    fXform.dx = 0;
    fXform.dy = 0;

    fGsA.m11 = SkScalarToFloat(GsA.get(SkMatrix::kMScaleX));
    fGsA.m12 = SkScalarToFloat(GsA.get(SkMatrix::kMSkewY)); // This should be ~0.
    fGsA.m21 = SkScalarToFloat(GsA.get(SkMatrix::kMSkewX));
    fGsA.m22 = SkScalarToFloat(GsA.get(SkMatrix::kMScaleY));
    fGsA.dx = 0;
    fGsA.dy = 0;

    // realTextSize is the actual device size we want (as opposed to the size the user requested).
    // gdiTextSize is the size we request when GDI compatible.
    // If the scale is negative, this means the matrix will do the flip anyway.
    const SkScalar realTextSize = scale.fY;
    // Due to floating point math, the lower bits are suspect. Round carefully.
    SkScalar gdiTextSize = SkScalarRoundToScalar(realTextSize * 64.0f) / 64.0f;
    if (gdiTextSize == 0) {
        gdiTextSize = SK_Scalar1;
    }

    bool bitmapRequested = SkToBool(fRec.fFlags & SkScalerContext::kEmbeddedBitmapText_Flag);
    bool treatLikeBitmap = false;
    bool axisAlignedBitmap = false;
    if (bitmapRequested) {
        // When embedded bitmaps are requested, treat the entire range like
        // a bitmap strike if the range is gridfit only and contains a bitmap.
        int bitmapPPEM = SkScalarTruncToInt(gdiTextSize);
        PPEMRange range = { bitmapPPEM, bitmapPPEM };
        expand_range_if_gridfit_only(typeface, bitmapPPEM, &range);
        treatLikeBitmap = has_bitmap_strike(typeface, range);

        axisAlignedBitmap = is_axis_aligned(fRec);
    }

    // If the user requested aliased, do so with aliased compatible metrics.
    if (SkMask::kBW_Format == fRec.fMaskFormat) {
        fTextSizeRender = gdiTextSize;
        fRenderingMode = DWRITE_RENDERING_MODE_ALIASED;
        fTextureType = DWRITE_TEXTURE_ALIASED_1x1;
        fTextSizeMeasure = gdiTextSize;
        fMeasuringMode = DWRITE_MEASURING_MODE_GDI_CLASSIC;

    // If we can use a bitmap, use gdi classic rendering and measurement.
    // This will not always provide a bitmap, but matches expected behavior.
    } else if (treatLikeBitmap && axisAlignedBitmap) {
        fTextSizeRender = gdiTextSize;
        fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC;
        fTextureType = DWRITE_TEXTURE_CLEARTYPE_3x1;
        fTextSizeMeasure = gdiTextSize;
        fMeasuringMode = DWRITE_MEASURING_MODE_GDI_CLASSIC;

    // If rotated but the horizontal text could have used a bitmap,
    // render high quality rotated glyphs but measure using bitmap metrics.
    } else if (treatLikeBitmap) {
        fTextSizeRender = gdiTextSize;
        fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC;
        fTextureType = DWRITE_TEXTURE_CLEARTYPE_3x1;
        fTextSizeMeasure = gdiTextSize;
        fMeasuringMode = DWRITE_MEASURING_MODE_GDI_CLASSIC;

//.........这里部分代码省略.........

SkImageShader::SkImageShader(const SkImage* img, TileMode tmx, TileMode tmy, const SkMatrix* matrix)
    : INHERITED(matrix)
    , fImage(SkRef(img))
    , fTileModeX(tmx)
    , fTileModeY(tmy)
{}

GrXPFactory* GrPorterDuffXPFactory::Create(SkXfermode::Mode mode) {
    switch (mode) {
        case SkXfermode::kClear_Mode: {
            static GrPorterDuffXPFactory gClearPDXPF(kZero_GrBlendCoeff, kZero_GrBlendCoeff);
            return SkRef(&gClearPDXPF);
            break;
        }
        case SkXfermode::kSrc_Mode: {
            static GrPorterDuffXPFactory gSrcPDXPF(kOne_GrBlendCoeff, kZero_GrBlendCoeff);
            return SkRef(&gSrcPDXPF);
            break;
        }
        case SkXfermode::kDst_Mode: {
            static GrPorterDuffXPFactory gDstPDXPF(kZero_GrBlendCoeff, kOne_GrBlendCoeff);
            return SkRef(&gDstPDXPF);
            break;
        }
        case SkXfermode::kSrcOver_Mode: {
            static GrPorterDuffXPFactory gSrcOverPDXPF(kOne_GrBlendCoeff, kISA_GrBlendCoeff);
            return SkRef(&gSrcOverPDXPF);
            break;
        }
        case SkXfermode::kDstOver_Mode: {
            static GrPorterDuffXPFactory gDstOverPDXPF(kIDA_GrBlendCoeff, kOne_GrBlendCoeff);
            return SkRef(&gDstOverPDXPF);
            break;
        }
        case SkXfermode::kSrcIn_Mode: {
            static GrPorterDuffXPFactory gSrcInPDXPF(kDA_GrBlendCoeff, kZero_GrBlendCoeff);
            return SkRef(&gSrcInPDXPF);
            break;
        }
        case SkXfermode::kDstIn_Mode: {
            static GrPorterDuffXPFactory gDstInPDXPF(kZero_GrBlendCoeff, kSA_GrBlendCoeff);
            return SkRef(&gDstInPDXPF);
            break;
        }
        case SkXfermode::kSrcOut_Mode: {
            static GrPorterDuffXPFactory gSrcOutPDXPF(kIDA_GrBlendCoeff, kZero_GrBlendCoeff);
            return SkRef(&gSrcOutPDXPF);
            break;
        }
        case SkXfermode::kDstOut_Mode: {
            static GrPorterDuffXPFactory gDstOutPDXPF(kZero_GrBlendCoeff, kISA_GrBlendCoeff);
            return SkRef(&gDstOutPDXPF);
            break;
        }
        case SkXfermode::kSrcATop_Mode: {
            static GrPorterDuffXPFactory gSrcATopPDXPF(kDA_GrBlendCoeff, kISA_GrBlendCoeff);
            return SkRef(&gSrcATopPDXPF);
            break;
        }
        case SkXfermode::kDstATop_Mode: {
            static GrPorterDuffXPFactory gDstATopPDXPF(kIDA_GrBlendCoeff, kSA_GrBlendCoeff);
            return SkRef(&gDstATopPDXPF);
            break;
        }
        case SkXfermode::kXor_Mode: {
            static GrPorterDuffXPFactory gXorPDXPF(kIDA_GrBlendCoeff, kISA_GrBlendCoeff);
            return SkRef(&gXorPDXPF);
            break;
        }
        case SkXfermode::kPlus_Mode: {
            static GrPorterDuffXPFactory gPlusPDXPF(kOne_GrBlendCoeff, kOne_GrBlendCoeff);
            return SkRef(&gPlusPDXPF);
            break;
        }
        case SkXfermode::kModulate_Mode: {
            static GrPorterDuffXPFactory gModulatePDXPF(kZero_GrBlendCoeff, kSC_GrBlendCoeff);
            return SkRef(&gModulatePDXPF);
            break;
        }
        case SkXfermode::kScreen_Mode: {
            static GrPorterDuffXPFactory gScreenPDXPF(kOne_GrBlendCoeff, kISC_GrBlendCoeff);
            return SkRef(&gScreenPDXPF);
            break;
        }
        default:
            return NULL;
    }
}

//.........这里部分代码省略.........
            break;
        case SkShader::kRadial_GradientType:
            transformPoints[1] = transformPoints[0];
            transformPoints[1].fX += info->fRadius[0];
            codeFunction = &radialCode;
            break;
        case SkShader::kConical_GradientType: {
            transformPoints[1] = transformPoints[0];
            transformPoints[1].fX += SK_Scalar1;
            codeFunction = &twoPointConicalCode;
            break;
        }
        case SkShader::kSweep_GradientType:
            transformPoints[1] = transformPoints[0];
            transformPoints[1].fX += SK_Scalar1;
            codeFunction = &sweepCode;
            break;
        case SkShader::kColor_GradientType:
        case SkShader::kNone_GradientType:
        default:
            return NULL;
    }

    // Move any scaling (assuming a unit gradient) or translation
    // (and rotation for linear gradient), of the final gradient from
    // info->fPoints to the matrix (updating bbox appropriately).  Now
    // the gradient can be drawn on on the unit segment.
    SkMatrix mapperMatrix;
    unitToPointsMatrix(transformPoints, &mapperMatrix);

    SkMatrix finalMatrix = state.fCanvasTransform;
    finalMatrix.preConcat(state.fShaderTransform);
    finalMatrix.preConcat(mapperMatrix);

    // Preserves as much as posible in the final matrix, and only removes
    // the perspective. The inverse of the perspective is stored in
    // perspectiveInverseOnly matrix and has 3 useful numbers
    // (p0, p1, p2), while everything else is either 0 or 1.
    // In this way the shader will handle it eficiently, with minimal code.
    SkMatrix perspectiveInverseOnly = SkMatrix::I();
    if (finalMatrix.hasPerspective()) {
        if (!split_perspective(finalMatrix,
                               &finalMatrix, &perspectiveInverseOnly)) {
            return NULL;
        }
    }

    SkRect bbox;
    bbox.set(state.fBBox);
    if (!inverse_transform_bbox(finalMatrix, &bbox)) {
        return NULL;
    }

    SkAutoTUnref<SkPDFArray> domain(new SkPDFArray);
    domain->reserve(4);
    domain->appendScalar(bbox.fLeft);
    domain->appendScalar(bbox.fRight);
    domain->appendScalar(bbox.fTop);
    domain->appendScalar(bbox.fBottom);

    SkString functionCode;
    // The two point radial gradient further references
    // state.fInfo
    // in translating from x, y coordinates to the t parameter. So, we have
    // to transform the points and radii according to the calculated matrix.
    if (state.fType == SkShader::kConical_GradientType) {
        SkShader::GradientInfo twoPointRadialInfo = *info;
        SkMatrix inverseMapperMatrix;
        if (!mapperMatrix.invert(&inverseMapperMatrix)) {
            return NULL;
        }
        inverseMapperMatrix.mapPoints(twoPointRadialInfo.fPoint, 2);
        twoPointRadialInfo.fRadius[0] =
            inverseMapperMatrix.mapRadius(info->fRadius[0]);
        twoPointRadialInfo.fRadius[1] =
            inverseMapperMatrix.mapRadius(info->fRadius[1]);
        functionCode = codeFunction(twoPointRadialInfo, perspectiveInverseOnly);
    } else {
        functionCode = codeFunction(*info, perspectiveInverseOnly);
    }

    SkAutoTUnref<SkPDFDict> pdfShader(new SkPDFDict);
    pdfShader->insertInt("ShadingType", 1);
    pdfShader->insertName("ColorSpace", "DeviceRGB");
    pdfShader->insertObject("Domain", SkRef(domain.get()));

    SkAutoTUnref<SkPDFStream> function(
            make_ps_function(functionCode, domain.get()));
    pdfShader->insertObjRef("Function", function.detach());

    SkPDFFunctionShader* pdfFunctionShader = new SkPDFFunctionShader(autoState->detach());

    pdfFunctionShader->insertInt("PatternType", 2);
    pdfFunctionShader->insertObject("Matrix",
                                    SkPDFUtils::MatrixToArray(finalMatrix));
    pdfFunctionShader->insertObject("Shading", pdfShader.detach());

    canon->addFunctionShader(pdfFunctionShader);
    return pdfFunctionShader;
}

SkFontMgr* SkFontMgr::RefDefault() {
    return SkRef(singleton.get());
}

void SkPDFCanon::addAlphaShader(SkPDFAlphaFunctionShader* pdfShader) {
    fAlphaShaderRecords.push(SkRef(pdfShader));
}

void SkPDFCanon::addFunctionShader(SkPDFFunctionShader* pdfShader) {
    fFunctionShaderRecords.push(SkRef(pdfShader));
}

SkColorFilterImageFilter::SkColorFilterImageFilter(SkColorFilter* cf,
        SkImageFilter* input, const CropRect* cropRect)
    : INHERITED(1, &input, cropRect), fColorFilter(SkRef(cf)) {
}

bool GrDefaultPathRenderer::internalDrawPath(GrDrawTarget* target,
                                             GrPipelineBuilder* pipelineBuilder,
                                             GrColor color,
                                             const SkMatrix& viewMatrix,
                                             const SkPath& path,
                                             const GrStrokeInfo& origStroke,
                                             bool stencilOnly) {
    SkTCopyOnFirstWrite<GrStrokeInfo> stroke(origStroke);

    SkScalar hairlineCoverage;
    uint8_t newCoverage = 0xff;
    if (IsStrokeHairlineOrEquivalent(*stroke, viewMatrix, &hairlineCoverage)) {
        newCoverage = SkScalarRoundToInt(hairlineCoverage * 0xff);

        if (!stroke->isHairlineStyle()) {
            stroke.writable()->setHairlineStyle();
        }
    }

    const bool isHairline = stroke->isHairlineStyle();

    // Save the current xp on the draw state so we can reset it if needed
    SkAutoTUnref<const GrXPFactory> backupXPFactory(SkRef(pipelineBuilder->getXPFactory()));
    // face culling doesn't make sense here
    SkASSERT(GrPipelineBuilder::kBoth_DrawFace == pipelineBuilder->getDrawFace());

    int                         passCount = 0;
    const GrStencilSettings*    passes[3];
    GrPipelineBuilder::DrawFace drawFace[3];
    bool                        reverse = false;
    bool                        lastPassIsBounds;

    if (isHairline) {
        passCount = 1;
        if (stencilOnly) {
            passes[0] = &gDirectToStencil;
        } else {
            passes[0] = NULL;
        }
        lastPassIsBounds = false;
        drawFace[0] = GrPipelineBuilder::kBoth_DrawFace;
    } else {
        if (single_pass_path(path, *stroke)) {
            passCount = 1;
            if (stencilOnly) {
                passes[0] = &gDirectToStencil;
            } else {
                passes[0] = NULL;
            }
            drawFace[0] = GrPipelineBuilder::kBoth_DrawFace;
            lastPassIsBounds = false;
        } else {
            switch (path.getFillType()) {
                case SkPath::kInverseEvenOdd_FillType:
                    reverse = true;
                    // fallthrough
                case SkPath::kEvenOdd_FillType:
                    passes[0] = &gEOStencilPass;
                    if (stencilOnly) {
                        passCount = 1;
                        lastPassIsBounds = false;
                    } else {
                        passCount = 2;
                        lastPassIsBounds = true;
                        if (reverse) {
                            passes[1] = &gInvEOColorPass;
                        } else {
                            passes[1] = &gEOColorPass;
                        }
                    }
                    drawFace[0] = drawFace[1] = GrPipelineBuilder::kBoth_DrawFace;
                    break;

                case SkPath::kInverseWinding_FillType:
                    reverse = true;
                    // fallthrough
                case SkPath::kWinding_FillType:
                    if (fSeparateStencil) {
                        if (fStencilWrapOps) {
                            passes[0] = &gWindStencilSeparateWithWrap;
                        } else {
                            passes[0] = &gWindStencilSeparateNoWrap;
                        }
                        passCount = 2;
                        drawFace[0] = GrPipelineBuilder::kBoth_DrawFace;
                    } else {
                        if (fStencilWrapOps) {
                            passes[0] = &gWindSingleStencilWithWrapInc;
                            passes[1] = &gWindSingleStencilWithWrapDec;
                        } else {
                            passes[0] = &gWindSingleStencilNoWrapInc;
                            passes[1] = &gWindSingleStencilNoWrapDec;
                        }
                        // which is cw and which is ccw is arbitrary.
                        drawFace[0] = GrPipelineBuilder::kCW_DrawFace;
                        drawFace[1] = GrPipelineBuilder::kCCW_DrawFace;
                        passCount = 3;
                    }
                    if (stencilOnly) {
                        lastPassIsBounds = false;
//.........这里部分代码省略.........