C++ SkToBool函数代码示例

bool SkDisplayBounds::draw(SkAnimateMaker& maker) {
    maker.fDisplayList.fUnionBounds = SkToBool(inval);
    maker.fDisplayList.fDrawBounds = false;
    fBounds.setEmpty();
    bool result = INHERITED::draw(maker);
    maker.fDisplayList.fUnionBounds = false;
    maker.fDisplayList.fDrawBounds = true;
    if (inval && fBounds.isEmpty() == false) {
        SkIRect& rect = maker.fDisplayList.fInvalBounds;
        maker.fDisplayList.fHasUnion = true;
        if (rect.isEmpty())
            rect = fBounds;
        else 
            rect.join(fBounds);
    }
    return result;
}

void GrPipeline::adjustProgramFromOptimizations(const GrPipelineBuilder& pipelineBuilder,
                                                GrXferProcessor::OptFlags flags,
                                                const GrProcOptInfo& colorPOI,
                                                const GrProcOptInfo& coveragePOI,
                                                int* firstColorProcessorIdx,
                                                int* firstCoverageProcessorIdx) {
    fIgnoresCoverage = SkToBool(flags & GrXferProcessor::kIgnoreCoverage_OptFlag);

    if ((flags & GrXferProcessor::kIgnoreColor_OptFlag) ||
        (flags & GrXferProcessor::kOverrideColor_OptFlag)) {
        *firstColorProcessorIdx = pipelineBuilder.numColorFragmentProcessors();
    }

    if (flags & GrXferProcessor::kIgnoreCoverage_OptFlag) {
        *firstCoverageProcessorIdx = pipelineBuilder.numCoverageFragmentProcessors();
    }
}

bool sk_isdir(const char *path) {
    struct stat status;
    if (0 != stat(path, &status)) {
#ifdef SK_BUILD_FOR_IOS
        // check the bundle directory if not in default path
        SkString bundlePath;
        if (ios_get_path_in_bundle(path, &bundlePath)) {
            if (0 != stat(bundlePath.c_str(), &status)) {
                return false;
            }
        }
#else
        return false;
#endif
    }
    return SkToBool(status.st_mode & S_IFDIR);
}

bool SkHitTestPathEx(const SkPath& path, SkScalar x, SkScalar y) {
    bool isInverse = path.isInverseFillType();
    if (path.isEmpty()) {
        return isInverse;
    }
    
    const SkRect& bounds = path.getBounds();
    if (!bounds.contains(x, y)) {
        return isInverse;
    }

    SkPath::Iter iter(path, true);
    bool done = false;
    int w = 0;
    do {
        SkPoint pts[4];
        switch (iter.next(pts, false)) {
            case SkPath::kMove_Verb:
            case SkPath::kClose_Verb:
                break;
            case SkPath::kLine_Verb:
                w += winding_line(pts, x, y);
                break;
            case SkPath::kQuad_Verb:
                w += winding_quad(pts, x, y);
                break;
            case SkPath::kCubic_Verb:
                w += winding_cubic(pts, x, y);
                break;
            case SkPath::kDone_Verb:
                done = true;
                break;
        }
    } while (!done);

    switch (path.getFillType()) {
        case SkPath::kEvenOdd_FillType:
        case SkPath::kInverseEvenOdd_FillType:
            w &= 1;
            break;
        default:
            break;
    }
    return SkToBool(w);
}

SkSurface* SkSurface::NewWrappedRenderTarget(GrContext* context, GrBackendTextureDesc desc,
                                             const SkSurfaceProps* props) {
    if (NULL == context) {
        return NULL;
    }
    if (!SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag)) {
        return NULL;
    }
    SkAutoTUnref<GrSurface> surface(context->textureProvider()->wrapBackendTexture(desc));
    if (!surface) {
        return NULL;
    }
    SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(surface->asRenderTarget(), props));
    if (!device) {
        return NULL;
    }
    return SkNEW_ARGS(SkSurface_Gpu, (device));
}

void DWriteFontTypeface::onGetFontDescriptor(SkFontDescriptor* desc,
                                             bool* isLocalStream) const {
    // Get the family name.
    SkTScopedComPtr<IDWriteLocalizedStrings> dwFamilyNames;
    HRV(fDWriteFontFamily->GetFamilyNames(&dwFamilyNames));

    UINT32 dwFamilyNamesLength;
    HRV(dwFamilyNames->GetStringLength(0, &dwFamilyNamesLength));

    SkSMallocWCHAR dwFamilyNameChar(dwFamilyNamesLength+1);
    HRV(dwFamilyNames->GetString(0, dwFamilyNameChar.get(), dwFamilyNamesLength+1));

    SkString utf8FamilyName;
    HRV(sk_wchar_to_skstring(dwFamilyNameChar.get(), &utf8FamilyName));

    desc->setFamilyName(utf8FamilyName.c_str());
    *isLocalStream = SkToBool(fDWriteFontFileLoader.get());
}

static bool draw_path_cell(SkCanvas* canvas, SkImage* img, int expectedCaps) {
    // Draw the image
    canvas->drawImage(img, 0, 0);

    int w = img->width(), h = img->height();

    // Read the pixels back
    SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
    SkAutoPixmapStorage pmap;
    pmap.alloc(info);
    if (!img->readPixels(pmap, 0, 0)) {
        return false;
    }

    // To account for rasterization differences, we scan the middle two rows [y, y+1] of the image
    SkASSERT(h % 2 == 0);
    int y = (h - 1) / 2;

    bool inBlob = false;
    int numBlobs = 0;
    for (int x = 0; x < w; ++x) {
        // We drew white-on-black. We can look for any non-zero value. Just check red.
        // And we care if either row is non-zero, so just add them to simplify everything.
        uint32_t v = SkGetPackedR32(*pmap.addr32(x, y)) + SkGetPackedR32(*pmap.addr32(x, y + 1));

        if (!inBlob && v) {
            ++numBlobs;
        }
        inBlob = SkToBool(v);
    }

    SkPaint outline;
    outline.setStyle(SkPaint::kStroke_Style);
    if (numBlobs == expectedCaps) {
        outline.setColor(0xFF007F00); // Green
    } else if (numBlobs > expectedCaps) {
        outline.setColor(0xFF7F7F00); // Yellow -- more geometry than expected
    } else {
        outline.setColor(0xFF7F0000); // Red -- missing some geometry
    }

    canvas->drawRect(SkRect::MakeWH(w, h), outline);
    return numBlobs == expectedCaps;
}

bool Window_mac::attach(BackendType attachType) {
    this->initWindow();

    window_context_factory::MacWindowInfo info;
    info.fWindow = fWindow;
    switch (attachType) {
        case kRaster_BackendType:
            fWindowContext = NewRasterForMac(info, fRequestedDisplayParams);
            break;
            
        case kNativeGL_BackendType:
        default:
            fWindowContext = NewGLForMac(info, fRequestedDisplayParams);
            break;
    }
    this->onBackendCreated();

    return (SkToBool(fWindowContext));
}

    void updateReader() {
        if (NULL == fReader) {
            return;
        }
        bool crossProcess = SkToBool(fFlags & SkGPipeWriter::kCrossProcess_Flag);
        fReader->setFlags(SkSetClearMask(fReader->getFlags(), crossProcess,
                                         SkReadBuffer::kCrossProcess_Flag));
        if (crossProcess) {
            fReader->setFactoryArray(&fFactoryArray);
        } else {
            fReader->setFactoryArray(NULL);
        }

        if (shouldFlattenBitmaps(fFlags)) {
            fReader->setBitmapStorage(this);
        } else {
            fReader->setBitmapStorage(fSharedHeap);
        }
    }

GrMorphologyEffect::GrMorphologyEffect(sk_sp<GrTextureProxy> proxy,
                                       Direction direction,
                                       int radius,
                                       Type type,
                                       const float range[2])
        : INHERITED(kGrMorphologyEffect_ClassID, ModulateByConfigOptimizationFlags(proxy->config()))
        , fCoordTransform(proxy.get())
        , fTextureSampler(std::move(proxy))
        , fDirection(direction)
        , fRadius(radius)
        , fType(type)
        , fUseRange(SkToBool(range)) {
    this->addCoordTransform(&fCoordTransform);
    this->setTextureSamplerCnt(1);
    if (fUseRange) {
        fRange[0] = range[0];
        fRange[1] = range[1];
    }
}

/**
 *  This test contains basic sanity checks concerning bitmaps.
 */
DEF_TEST(Bitmap, reporter) {
    // Zero-sized bitmaps are allowed
    for (int width = 0; width < 2; ++width) {
        for (int height = 0; height < 2; ++height) {
            SkBitmap bm;
            bool setConf = bm.setInfo(SkImageInfo::MakeN32Premul(width, height));
            REPORTER_ASSERT(reporter, setConf);
            if (setConf) {
                bm.allocPixels();
            }
            REPORTER_ASSERT(reporter, SkToBool(width & height) != bm.empty());
        }
    }

    test_bigwidth(reporter);
    test_allocpixels(reporter);
    test_bigalloc(reporter);
    test_peekpixels(reporter);
}

bool GrDrawTarget::AutoReleaseGeometry::set(GrDrawTarget*  target,
                                            int vertexCount,
                                            int indexCount) {
    this->reset();
    fTarget = target;
    bool success = true;
    if (fTarget) {
        success = target->reserveVertexAndIndexSpace(vertexCount,
                                                     indexCount,
                                                     &fVertices,
                                                     &fIndices);
        if (!success) {
            fTarget = NULL;
            this->reset();
        }
    }
    SkASSERT(success == SkToBool(fTarget));
    return success;
}

void GrVkCaps::initGrCaps(const VkPhysicalDeviceProperties& properties,
                          const VkPhysicalDeviceMemoryProperties& memoryProperties,
                          uint32_t featureFlags) {
    // So GPUs, like AMD, are reporting MAX_INT support vertex attributes. In general, there is no
    // need for us ever to support that amount, and it makes tests which tests all the vertex
    // attribs timeout looping over that many. For now, we'll cap this at 64 max and can raise it if
    // we ever find that need.
    static const uint32_t kMaxVertexAttributes = 64;
    fMaxVertexAttributes = SkTMin(properties.limits.maxVertexInputAttributes, kMaxVertexAttributes);
    // AMD advertises support for MAX_UINT vertex input attributes, but in reality only supports 32.
    if (kAMD_VkVendor == properties.vendorID) {
        fMaxVertexAttributes = SkTMin(fMaxVertexAttributes, 32);
    }

    // We could actually query and get a max size for each config, however maxImageDimension2D will
    // give the minimum max size across all configs. So for simplicity we will use that for now.
    fMaxRenderTargetSize = SkTMin(properties.limits.maxImageDimension2D, (uint32_t)INT_MAX);
    fMaxTextureSize = SkTMin(properties.limits.maxImageDimension2D, (uint32_t)INT_MAX);

    this->initSampleCount(properties);

    // Assuming since we will always map in the end to upload the data we might as well just map
    // from the get go. There is no hard data to suggest this is faster or slower.
    fBufferMapThreshold = 0;

    fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag;

    fOversizedStencilSupport = true;
    fSampleShadingSupport = SkToBool(featureFlags & kSampleRateShading_GrVkFeatureFlag);

    // AMD seems to have issues binding new VkPipelines inside a secondary command buffer.
    // Current workaround is to use a different secondary command buffer for each new VkPipeline.
    if (kAMD_VkVendor == properties.vendorID) {
        fNewCBOnPipelineChange = true;
    }

#if defined(SK_CPU_X86)
    if (kImagination_VkVendor == properties.vendorID) {
        fSRGBSupport = false;
    }
#endif
}

SkSurface* SkSurface::NewFromBackendTexture(GrContext* context, const GrBackendTextureDesc& desc,
                                            const SkSurfaceProps* props) {
    if (NULL == context) {
        return NULL;
    }
    if (!SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag)) {
        return NULL;
    }
    SkAutoTUnref<GrSurface> surface(context->textureProvider()->wrapBackendTexture(desc,
                                    kBorrow_GrWrapOwnership));
    if (!surface) {
        return NULL;
    }
    SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(surface->asRenderTarget(), props,
                                                         SkGpuDevice::kUninit_InitContents));
    if (!device) {
        return NULL;
    }
    return SkNEW_ARGS(SkSurface_Gpu, (device));
}

bool GrGLProgram::genProgram(const GrCustomStage** customStages) {
    GrAssert(0 == fProgramID);

    GrGLShaderBuilder builder(fContextInfo, fUniformManager);
    const uint32_t& layout = fDesc.fVertexLayout;

#if GR_GL_EXPERIMENTAL_GS
    builder.fUsesGS = fDesc.fExperimentalGS;
#endif

    SkXfermode::Coeff colorCoeff, uniformCoeff;
    bool applyColorMatrix = SkToBool(fDesc.fColorMatrixEnabled);
    // The rest of transfer mode color filters have not been implemented
    if (fDesc.fColorFilterXfermode < SkXfermode::kCoeffModesCnt) {
        GR_DEBUGCODE(bool success =)
            SkXfermode::ModeAsCoeff(static_cast<SkXfermode::Mode>
                                    (fDesc.fColorFilterXfermode),
                                    &uniformCoeff, &colorCoeff);
        GR_DEBUGASSERT(success);
    } else {