C++ (Cpp) LayerChromium::backgroundFilters Exemples

Exemple #1

size_t CCLayerTreeHost::calculateMemoryForRenderSurfaces(const LayerList& updateList)
{
    size_t readbackBytes = 0;
    size_t maxBackgroundTextureBytes = 0;
    size_t contentsTextureBytes = 0;

    // Start iteration at 1 to skip the root surface as it does not have a texture cost.
    for (size_t i = 1; i < updateList.size(); ++i) {
        LayerChromium* renderSurfaceLayer = updateList[i].get();
        RenderSurfaceChromium* renderSurface = renderSurfaceLayer->renderSurface();

        size_t bytes = CCTexture::memorySizeBytes(renderSurface->contentRect().size(), GraphicsContext3D::RGBA);
        contentsTextureBytes += bytes;

        if (renderSurfaceLayer->backgroundFilters().isEmpty())
            continue;

        if (bytes > maxBackgroundTextureBytes)
            maxBackgroundTextureBytes = bytes;
        if (!readbackBytes)
            readbackBytes = CCTexture::memorySizeBytes(m_deviceViewportSize, GraphicsContext3D::RGBA);
    }
    return readbackBytes + maxBackgroundTextureBytes + contentsTextureBytes;
}