Method OccupySlot

Source/Editor/Content/PreviewsCache.cpp:169–207

}

SpriteHandle PreviewsCache::OccupySlot(GPUTexture* source, const Guid& id)
{
    if (WaitForLoaded())
        return SpriteHandle::Invalid;

    // Find this asset slot or use the first empty
    int32 index = _assets.Find(id);
    if (index == INVALID_INDEX)
        index = _assets.Find(Guid::Empty);
    if (index == INVALID_INDEX)
    {
        LOG(Warning, "Cannot find free slot in the asset previews atlas.");
        return SpriteHandle::Invalid;
    }

    ASSERT(IsReady());

    // Copy texture region
    uint32 x = ASSETS_ICONS_ATLAS_MARGIN + index % ASSETS_ICONS_PER_ROW * (ASSET_ICON_SIZE + ASSETS_ICONS_ATLAS_MARGIN);
    uint32 y = ASSETS_ICONS_ATLAS_MARGIN + index / ASSETS_ICONS_PER_ROW * (ASSET_ICON_SIZE + ASSETS_ICONS_ATLAS_MARGIN);
    GPUDevice::Instance->GetMainContext()->CopyTexture(GetTexture(), 0, x, y, 0, source, 0);

    // Occupy slot
    _assets[index] = id;

    // Get sprite handle
    const String spriteName = StringUtils::ToString(index);
    const auto slot = FindSprite(spriteName);
    if (!slot.IsValid())
    {
        LOG(Warning, "Cannot create sprite handle for asset preview.");
        return SpriteHandle::Invalid;
    }

    // Set dirty flag
    _isDirty = true;

    return slot;
}

bool PreviewsCache::ReleaseSlot(const Guid& id)
{