C++ sk_sp::instantiate方法代码示例

void GrResourceIOProcessor::TextureSampler::reset(GrResourceProvider* resourceProvider,
                                                  sk_sp<GrTextureProxy> proxy,
                                                  const GrSamplerParams& params,
                                                  GrShaderFlags visibility) {
    // For now, end the deferral at this time. Once all the TextureSamplers are swapped over
    // to taking a GrSurfaceProxy just use the IORefs on the proxy
    GrTexture* texture = proxy->instantiate(resourceProvider);
    SkASSERT(texture);
    fTexture.set(SkRef(texture), kRead_GrIOType);
    fParams = params;
    fParams.setFilterMode(SkTMin(params.filterMode(), texture->texturePriv().highestFilterMode()));
    fVisibility = visibility;
}

sk_sp<GrRenderTargetContext> GrDrawingManager::makeRenderTargetContext(
                                                            sk_sp<GrRenderTargetProxy> rtp,
                                                            sk_sp<SkColorSpace> colorSpace,
                                                            const SkSurfaceProps* surfaceProps) {
    if (this->wasAbandoned()) {
        return nullptr;
    }

    // SkSurface catches bad color space usage at creation. This check handles anything that slips
    // by, including internal usage. We allow a null color space here, for read/write pixels and
    // other special code paths. If a color space is provided, though, enforce all other rules.
    if (colorSpace && !SkSurface_Gpu::Valid(fContext, rtp->config(), colorSpace.get())) {
        SkDEBUGFAIL("Invalid config and colorspace combination");
        return nullptr;
    }

    bool useDIF = false;
    if (surfaceProps) {
        useDIF = surfaceProps->isUseDeviceIndependentFonts();
    }

    if (useDIF && fContext->caps()->shaderCaps()->pathRenderingSupport() &&
        rtp->isStencilBufferMultisampled()) {
        // TODO: defer stencil buffer attachment for PathRenderingDrawContext
        sk_sp<GrRenderTarget> rt(sk_ref_sp(rtp->instantiate(fContext->textureProvider())));
        GrStencilAttachment* sb = fContext->resourceProvider()->attachStencilAttachment(rt.get());
        if (sb) {
            return sk_sp<GrRenderTargetContext>(new GrPathRenderingRenderTargetContext(
                                                        fContext, this, std::move(rtp),
                                                        std::move(colorSpace), surfaceProps,
                                                        fContext->getAuditTrail(), fSingleOwner));
        }
    }

    return sk_sp<GrRenderTargetContext>(new GrRenderTargetContext(fContext, this, std::move(rtp),
                                                                  std::move(colorSpace),
                                                                  surfaceProps,
                                                                  fContext->getAuditTrail(),
                                                                  fSingleOwner));
}

// This tests the basic capabilities of the uniquely keyed texture proxies. Does assigning
// and looking them up work, etc.
static void basic_test(GrContext* context,
                       skiatest::Reporter* reporter,
                       sk_sp<GrTextureProxy> proxy) {
    static int id = 1;

    GrResourceProvider* resourceProvider = context->priv().resourceProvider();
    GrProxyProvider* proxyProvider = context->priv().proxyProvider();
    GrResourceCache* cache = context->priv().getResourceCache();

    int startCacheCount = cache->getResourceCount();

    GrUniqueKey key;
    if (proxy->getUniqueKey().isValid()) {
        key = proxy->getUniqueKey();
    } else {
        GrMakeKeyFromImageID(&key, id, SkIRect::MakeWH(64, 64));
        ++id;

        // Assigning the uniqueKey adds the proxy to the hash but doesn't force instantiation
        REPORTER_ASSERT(reporter, !proxyProvider->numUniqueKeyProxies_TestOnly());
        SkAssertResult(proxyProvider->assignUniqueKeyToProxy(key, proxy.get()));
    }

    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, startCacheCount == cache->getResourceCount());

    // setUniqueKey had better stick
    REPORTER_ASSERT(reporter, key == proxy->getUniqueKey());

    // We just added it, surely we can find it
    REPORTER_ASSERT(reporter, proxyProvider->findOrCreateProxyByUniqueKey(
                                                                key, kBottomLeft_GrSurfaceOrigin));
    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());

    int expectedCacheCount = startCacheCount + (proxy->isInstantiated() ? 0 : 1);

    // Once instantiated, the backing resource should have the same key
    SkAssertResult(proxy->instantiate(resourceProvider));
    const GrUniqueKey texKey = proxy->peekSurface()->getUniqueKey();
    REPORTER_ASSERT(reporter, texKey.isValid());
    REPORTER_ASSERT(reporter, key == texKey);

    // An Unbudgeted-cacheable resource will not get purged when a proxy with the same key is
    // deleted.
    bool expectResourceToOutliveProxy = proxy->peekSurface()->resourcePriv().budgetedType() ==
                                        GrBudgetedType::kUnbudgetedCacheable;

    // An Unbudgeted-uncacheable resource is never kept alive if it's ref cnt reaches zero even if
    // it has a key.
    bool expectDeletingProxyToDeleteResource =
            proxy->peekSurface()->resourcePriv().budgetedType() ==
            GrBudgetedType::kUnbudgetedUncacheable;

    // deleting the proxy should delete it from the hash but not the cache
    proxy = nullptr;
    if (expectDeletingProxyToDeleteResource) {
        expectedCacheCount -= 1;
    }
    REPORTER_ASSERT(reporter, 0 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // If the proxy was cached refinding it should bring it back to life
    proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
    REPORTER_ASSERT(reporter, proxy);
    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // Mega-purging it should remove it from both the hash and the cache
    proxy = nullptr;
    cache->purgeAllUnlocked();
    if (!expectResourceToOutliveProxy) {
        expectedCacheCount--;
    }
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // If the texture was deleted then the proxy should no longer be findable. Otherwise, it should
    // be.
    proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
    REPORTER_ASSERT(reporter, expectResourceToOutliveProxy ? (bool)proxy : !proxy);
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    if (expectResourceToOutliveProxy) {
        proxy.reset();
        GrUniqueKeyInvalidatedMessage msg(texKey, context->priv().contextID());
        SkMessageBus<GrUniqueKeyInvalidatedMessage>::Post(msg);
        cache->purgeAsNeeded();
        expectedCacheCount--;
        proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
        REPORTER_ASSERT(reporter, !proxy);
        REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());
    }
}