C++ GrRenderTarget::numColorSamples方法代码示例

SkSurface* SkSurface_Gpu::onNewSurface(const SkImageInfo& info) {
    GrRenderTarget* rt = fDevice->accessRenderTarget();
    int sampleCount = rt->numColorSamples();
    // TODO: Make caller specify this (change virtual signature of onNewSurface).
    static const Budgeted kBudgeted = kNo_Budgeted;
    return SkSurface::NewRenderTarget(fDevice->context(), kBudgeted, info, sampleCount,
                                      &this->props());
}

static void check_rendertarget(skiatest::Reporter* reporter,
                               const GrCaps& caps,
                               GrResourceProvider* provider,
                               GrRenderTargetProxy* rtProxy,
                               int numSamples,
                               SkBackingFit fit,
                               int expectedMaxWindowRects) {
    REPORTER_ASSERT(reporter, rtProxy->maxWindowRectangles(caps) == expectedMaxWindowRects);
    REPORTER_ASSERT(reporter, rtProxy->numStencilSamples() == numSamples);

    GrSurfaceProxy::UniqueID idBefore = rtProxy->uniqueID();
    bool preinstantiated = rtProxy->isInstantiated();
    REPORTER_ASSERT(reporter, rtProxy->instantiate(provider));
    GrRenderTarget* rt = rtProxy->peekRenderTarget();

    REPORTER_ASSERT(reporter, rtProxy->uniqueID() == idBefore);
    // Deferred resources should always have a different ID from their instantiated rendertarget
    if (preinstantiated) {
        REPORTER_ASSERT(reporter, rtProxy->uniqueID().asUInt() == rt->uniqueID().asUInt());
    } else {
        REPORTER_ASSERT(reporter, rtProxy->uniqueID().asUInt() != rt->uniqueID().asUInt());
    }

    if (SkBackingFit::kExact == fit) {
        REPORTER_ASSERT(reporter, rt->width() == rtProxy->width());
        REPORTER_ASSERT(reporter, rt->height() == rtProxy->height());
    } else {
        REPORTER_ASSERT(reporter, rt->width() >= rtProxy->width());
        REPORTER_ASSERT(reporter, rt->height() >= rtProxy->height());
    }
    REPORTER_ASSERT(reporter, rt->config() == rtProxy->config());

    REPORTER_ASSERT(reporter, rt->fsaaType() == rtProxy->fsaaType());
    REPORTER_ASSERT(reporter, rt->numColorSamples() == rtProxy->numColorSamples());
    REPORTER_ASSERT(reporter, rt->numStencilSamples() == rtProxy->numStencilSamples());
    REPORTER_ASSERT(reporter, rt->surfacePriv().flags() == rtProxy->testingOnly_getFlags());
}

void SkMultiPictureDraw::draw(bool flush) {
    AutoMPDReset mpdreset(this);

#ifdef FORCE_SINGLE_THREAD_DRAWING_FOR_TESTING
    for (int i = 0; i < fThreadSafeDrawData.count(); ++i) {
        fThreadSafeDrawData[i].draw();
    }
#else
    sk_parallel_for(fThreadSafeDrawData.count(), [&](int i) {
        fThreadSafeDrawData[i].draw();
    });
#endif

    // N.B. we could get going on any GPU work from this main thread while the CPU work runs.
    // But in practice, we've either got GPU work or CPU work, not both.

    const int count = fGPUDrawData.count();
    if (0 == count) {
        return;
    }

#if !defined(SK_IGNORE_GPU_LAYER_HOISTING) && SK_SUPPORT_GPU
    GrContext* context = fGPUDrawData[0].fCanvas->getGrContext();
    SkASSERT(context);

    // Start by collecting all the layers that are going to be atlased and render
    // them (if necessary). Hoisting the free floating layers is deferred until
    // drawing the canvas that requires them.
    SkTDArray<GrHoistedLayer> atlasedNeedRendering, atlasedRecycled;

    for (int i = 0; i < count; ++i) {
        const DrawData& data = fGPUDrawData[i];
        // we only expect 1 context for all the canvases
        SkASSERT(data.fCanvas->getGrContext() == context);

        if (!data.fPaint) {
            SkRect clipBounds;
            if (!data.fCanvas->getClipBounds(&clipBounds)) {
                continue;
            }

            SkMatrix initialMatrix = data.fCanvas->getTotalMatrix();
            initialMatrix.preConcat(data.fMatrix);

            GrRenderTarget* rt = data.fCanvas->internal_private_accessTopLayerRenderTarget();
            SkASSERT(rt);

            // TODO: sorting the cacheable layers from smallest to largest
            // would improve the packing and reduce the number of swaps
            // TODO: another optimization would be to make a first pass to
            // lock any required layer that is already in the atlas
            GrLayerHoister::FindLayersToAtlas(context, data.fPicture, initialMatrix,
                                              clipBounds,
                                              &atlasedNeedRendering, &atlasedRecycled,
                                              rt->numColorSamples());
        }
    }

    GrLayerHoister::DrawLayersToAtlas(context, atlasedNeedRendering);

    SkTDArray<GrHoistedLayer> needRendering, recycled;
#endif

    for (int i = 0; i < count; ++i) {
        const DrawData& data = fGPUDrawData[i];
        SkCanvas* canvas = data.fCanvas;
        const SkPicture* picture = data.fPicture;

#if !defined(SK_IGNORE_GPU_LAYER_HOISTING) && SK_SUPPORT_GPU
        if (!data.fPaint) {

            SkRect clipBounds;
            if (!canvas->getClipBounds(&clipBounds)) {
                continue;
            }

            SkAutoCanvasMatrixPaint acmp(canvas, &data.fMatrix, data.fPaint, picture->cullRect());

            const SkMatrix initialMatrix = canvas->getTotalMatrix();

            GrRenderTarget* rt = data.fCanvas->internal_private_accessTopLayerRenderTarget();
            SkASSERT(rt);

            // Find the layers required by this canvas. It will return atlased
            // layers in the 'recycled' list since they have already been drawn.
            GrLayerHoister::FindLayersToHoist(context, picture, initialMatrix,
                                              clipBounds, &needRendering, &recycled,
                                              rt->numColorSamples());

            GrLayerHoister::DrawLayers(context, needRendering);

            // Render the entire picture using new layers
            GrRecordReplaceDraw(picture, canvas, context->getLayerCache(),
                                initialMatrix, NULL);

            GrLayerHoister::UnlockLayers(context, needRendering);
            GrLayerHoister::UnlockLayers(context, recycled);

            needRendering.rewind();
            recycled.rewind();
//.........这里部分代码省略.........