C++ SkAssertResult函数代码示例

void SKPBench::onPerCanvasPreDraw(SkCanvas* canvas) {
    SkIRect bounds;
    SkAssertResult(canvas->getClipDeviceBounds(&bounds));

    int xTiles = SkScalarCeilToInt(bounds.width()  / SkIntToScalar(FLAGS_benchTile));
    int yTiles = SkScalarCeilToInt(bounds.height() / SkIntToScalar(FLAGS_benchTile));

    fSurfaces.setReserve(xTiles * yTiles);
    fTileRects.setReserve(xTiles * yTiles);

    SkImageInfo ii = canvas->imageInfo().makeWH(FLAGS_benchTile, FLAGS_benchTile);

    for (int y = bounds.fTop; y < bounds.fBottom; y += FLAGS_benchTile) {
        for (int x = bounds.fLeft; x < bounds.fRight; x += FLAGS_benchTile) {
            const SkIRect tileRect = SkIRect::MakeXYWH(x, y, FLAGS_benchTile, FLAGS_benchTile);
            *fTileRects.append() = tileRect;
            *fSurfaces.push() = canvas->newSurface(ii);

            // Never want the contents of a tile to include stuff the parent
            // canvas clips out
            SkRect clip = SkRect::Make(bounds);
            clip.offset(-SkIntToScalar(tileRect.fLeft), -SkIntToScalar(tileRect.fTop));
            fSurfaces.top()->getCanvas()->clipRect(clip);

            fSurfaces.top()->getCanvas()->setMatrix(canvas->getTotalMatrix());
            fSurfaces.top()->getCanvas()->scale(fScale, fScale);
        }
    }
}

sk_sp<GrTextureProxy> GrCopyBaseMipMapToTextureProxy(GrContext* ctx, GrTextureProxy* baseProxy) {
    SkASSERT(baseProxy);

    if (!ctx->caps()->isConfigCopyable(baseProxy->config())) {
        return nullptr;
    }

    GrProxyProvider* proxyProvider = ctx->contextPriv().proxyProvider();
    GrSurfaceDesc desc;
    desc.fFlags = kNone_GrSurfaceFlags;
    desc.fOrigin = baseProxy->origin();
    desc.fWidth = baseProxy->width();
    desc.fHeight = baseProxy->height();
    desc.fConfig = baseProxy->config();
    desc.fSampleCnt = 1;

    sk_sp<GrTextureProxy> proxy = proxyProvider->createMipMapProxy(desc, SkBudgeted::kYes);
    if (!proxy) {
        return nullptr;
    }

    // Copy the base layer to our proxy
    sk_sp<SkColorSpace> colorSpace;
    if (GrPixelConfigIsSRGB(proxy->config())) {
        colorSpace = SkColorSpace::MakeSRGB();
    }
    sk_sp<GrSurfaceContext> sContext =
            ctx->contextPriv().makeWrappedSurfaceContext(proxy, std::move(colorSpace));
    SkASSERT(sContext);
    SkAssertResult(sContext->copy(baseProxy));

    return proxy;
}

void setup_vk_attachment_description(VkAttachmentDescription* attachment,
                                     const AttachmentDesc& desc,
                                     VkImageLayout layout) {
    attachment->flags = 0;
    attachment->format = desc.fFormat;
    SkAssertResult(GrSampleCountToVkSampleCount(desc.fSamples, &attachment->samples));
    switch (layout) {
        case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
            attachment->loadOp = desc.fLoadStoreOps.fLoadOp;
            attachment->storeOp = desc.fLoadStoreOps.fStoreOp;
            attachment->stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
            attachment->stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
            break;
        case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
            attachment->loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
            attachment->storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
            attachment->stencilLoadOp = desc.fLoadStoreOps.fLoadOp;
            attachment->stencilStoreOp = desc.fLoadStoreOps.fStoreOp;
            break;
        default:
            SkFAIL("Unexpected attachment layout");
    }

    attachment->initialLayout = layout;
    attachment->finalLayout = layout;
}

GrGLPath::GrGLPath(GrGLGpu* gpu, const SkPath& origSkPath, const GrStrokeInfo& origStroke)
    : INHERITED(gpu, origSkPath, origStroke),
      fPathID(gpu->glPathRendering()->genPaths(1)) {

    if (origSkPath.isEmpty()) {
        InitPathObjectEmptyPath(gpu, fPathID);
        fShouldStroke = false;
        fShouldFill = false;
    } else {
        const SkPath* skPath = &origSkPath;
        SkTLazy<SkPath> tmpPath;
        const GrStrokeInfo* stroke = &origStroke;
        GrStrokeInfo tmpStroke(SkStrokeRec::kFill_InitStyle);

        if (stroke->isDashed()) {
            // Skia stroking and NVPR stroking differ with respect to dashing
            // pattern.
            // Convert a dashing to either a stroke or a fill.
            if (stroke->applyDashToPath(tmpPath.init(), &tmpStroke, *skPath)) {
                skPath = tmpPath.get();
                stroke = &tmpStroke;
            }
        }

        bool didInit = false;
        if (stroke->needToApply() && stroke->getCap() != SkPaint::kButt_Cap) {
            // Skia stroking and NVPR stroking differ with respect to stroking
            // end caps of empty subpaths.
            // Convert stroke to fill if path contains empty subpaths.
            didInit = InitPathObjectPathDataCheckingDegenerates(gpu, fPathID, *skPath);
            if (!didInit) {
                if (!tmpPath.isValid()) {
                    tmpPath.init();
                }
                SkAssertResult(stroke->applyToPath(tmpPath.get(), *skPath));
                skPath = tmpPath.get();
                tmpStroke.setFillStyle();
                stroke = &tmpStroke;
            }
        }

        if (!didInit) {
            InitPathObjectPathData(gpu, fPathID, *skPath);
        }

        fShouldStroke = stroke->needToApply();
        fShouldFill = stroke->isFillStyle() ||
                stroke->getStyle() == SkStrokeRec::kStrokeAndFill_Style;

        if (fShouldStroke) {
            InitPathObjectStroke(gpu, fPathID, *stroke);

            // FIXME: try to account for stroking, without rasterizing the stroke.
            fBounds.outset(stroke->getWidth(), stroke->getWidth());
        }
    }

    this->registerWithCache();
}

void SKPAnimationBench::onPerCanvasPreDraw(SkCanvas* canvas) {
    INHERITED::onPerCanvasPreDraw(canvas);
    SkIRect bounds;
    SkAssertResult(canvas->getClipDeviceBounds(&bounds));

    fCenter.set((bounds.fRight - bounds.fLeft) / 2.0f,
                (bounds.fBottom - bounds.fTop) / 2.0f);
}

    LightingView() : fLightAngle(0.0f) , fColorFactor(0.0f) {
        {
            SkBitmap diffuseBitmap;
            SkAssertResult(GetResourceAsBitmap("images/brickwork-texture.jpg", &diffuseBitmap));

            fRect = SkRect::MakeIWH(diffuseBitmap.width(), diffuseBitmap.height());

            fDiffuseShader = diffuseBitmap.makeShader();
        }

        {
            SkBitmap normalBitmap;
            SkAssertResult(GetResourceAsBitmap("images/brickwork_normal-map.jpg", &normalBitmap));

            sk_sp<SkShader> normalMap = normalBitmap.makeShader();
            fNormalSource = SkNormalSource::MakeFromNormalMap(std::move(normalMap), SkMatrix::I());
        }
    }

void SkOpContour::toReversePath(SkPathWriter* path) const {
    const SkPoint& pt = fTail->pts()[0];
    path->deferredMove(pt);
    const SkOpSegment* segment = fTail;
    do {
        SkAssertResult(segment->addCurveTo(segment->tail(), segment->head(), path));
    } while ((segment = segment->prev()));
    path->close();
}

static const SkBitmap& not4444(const SkBitmap& input, SkBitmap* copy) {
    if (input.colorType() != kARGB_4444_SkColorType) {
        return input;
    }
    // ARGB_4444 is rarely used, so we can do a wasteful tmp copy.
    SkAssertResult(input.copyTo(copy, kN32_SkColorType));
    copy->setImmutable();
    return *copy;
}

 bool willUseFilterColor() const {
     SkXfermode::Coeff dstCoeff;
     SkXfermode::Coeff srcCoeff;
     SkAssertResult(SkXfermode::ModeAsCoeff(fMode, &srcCoeff, &dstCoeff));
     if (SkXfermode::kZero_Coeff == srcCoeff) {
         return GrBlendCoeffRefsSrc(sk_blend_to_grblend(dstCoeff));
     }
     return true;
 }

// static
void SkPDFUtils::AppendTransform(const SkMatrix& matrix, SkWStream* content) {
    SkScalar values[6];
    SkAssertResult(matrix.pdfTransform(values));
    for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
        SkPDFScalar::Append(values[i], content);
        content->writeText(" ");
    }
    content->writeText("cm\n");
}

SkShader::Context::Context(const SkShader& shader, const ContextRec& rec)
    : fShader(shader), fCTM(*rec.fMatrix)
{
    // Because the context parameters must be valid at this point, we know that the matrix is
    // invertible.
    SkAssertResult(fShader.computeTotalInverse(rec, &fTotalInverse));
    fTotalInverseClass = (uint8_t)ComputeMatrixClass(fTotalInverse);

    fPaintAlpha = rec.fPaint->getAlpha();
}

void SkPDFStream::emitObject(SkWStream* stream, SkPDFCatalog* catalog) {
    if (!this->populate(catalog)) {
        return fSubstitute->emitObject(stream, catalog);
    }

    this->INHERITED::emitObject(stream, catalog);
    stream->writeText(" stream\n");
    stream->writeStream(fDataStream.get(), fDataStream->getLength());
    SkAssertResult(fDataStream->rewind());
    stream->writeText("\nendstream");
}

/**
 *  A test for the SkDecodingImageGenerator::Create and
 *  SkInstallDiscardablePixelRef functions.
 */
DEF_TEST(ImprovedBitmapFactory, reporter) {
    SkString pngFilename = GetResourcePath("randPixels.png");
    SkAutoTDelete<SkStreamRewindable> stream(SkStream::NewFromFile(pngFilename.c_str()));
    if (sk_exists(pngFilename.c_str())) {
        SkBitmap bm;
        SkAssertResult(bm.setInfo(SkImageInfo::MakeN32Premul(1, 1)));
        REPORTER_ASSERT(reporter,
                        install_pixel_ref(&bm, stream.detach(), 1, true));
        SkAutoLockPixels alp(bm);
        REPORTER_ASSERT(reporter, bm.getPixels());
    }
}

bool DecodingImageGenerator::getPixels(const SkImageInfo& info,
                                         void* pixels,
                                         size_t rowBytes) {
    if (NULL == pixels) {
        return false;
    }
    if (fInfo != info) {
        // The caller has specified a different info.  This is an
        // error for this kind of SkImageGenerator.  Use the Options
        // to change the settings.
        return false;
    }
    if (info.minRowBytes() > rowBytes) {
        // The caller has specified a bad rowBytes.
        return false;
    }

    SkAssertResult(fStream->rewind());
    SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(fStream));
    if (NULL == decoder.get()) {
        return false;
    }
    decoder->setDitherImage(fDitherImage);
    decoder->setSampleSize(fSampleSize);
    decoder->setRequireUnpremultipliedColors(
            info.fAlphaType == kUnpremul_SkAlphaType);

    SkBitmap bitmap;
    TargetAllocator allocator(fInfo, pixels, rowBytes);
    decoder->setAllocator(&allocator);
    // TODO: need to be able to pass colortype directly to decoder
    SkBitmap::Config legacyConfig = SkColorTypeToBitmapConfig(info.colorType());
    bool success = decoder->decode(fStream, &bitmap, legacyConfig,
                                   SkImageDecoder::kDecodePixels_Mode);
    decoder->setAllocator(NULL);
    if (!success) {
        return false;
    }
    if (allocator.isReady()) {  // Did not use pixels!
        SkBitmap bm;
        SkASSERT(bitmap.canCopyTo(info.colorType()));
        bool copySuccess = bitmap.copyTo(&bm, info.colorType(), &allocator);
        if (!copySuccess || allocator.isReady()) {
            SkDEBUGFAIL("bitmap.copyTo(requestedConfig) failed.");
            // Earlier we checked canCopyto(); we expect consistency.
            return false;
        }
        SkASSERT(check_alpha(info.alphaType(), bm.alphaType()));
    } else {
        SkASSERT(check_alpha(info.alphaType(), bitmap.alphaType()));
    }
    return true;
}

 void onOnceBeforeDraw() override {
     // Copyright-free file from http://openclipart.org/detail/29213/paper-plane-by-ddoo
     SkString pngFilename = GetResourcePath("plane.png");
     SkAutoDataUnref data(SkData::NewFromFileName(pngFilename.c_str()));
     if (data.get()) {
         // Create a cache which will boot the pixels out anytime the
         // bitmap is unlocked.
         SkAutoTUnref<SkDiscardableMemoryPool> pool(
             SkDiscardableMemoryPool::Create(1));
         SkAssertResult(SkInstallDiscardablePixelRef(SkImageGenerator::NewFromData(data),
                                                     NULL, &fBitmap, pool));
     }
 }