[PATCH 2/5] d2d1: Partially implement RegisterEffectFromStream().

[Ziqing Hui]

>>> +    reg->info->default_input_count = input_count;
>>> +    reg->info->min_inputs = input_count;
>>> +    reg->info->max_inputs = input_count;
>> Is this supposed to be subproperties of an Input? Maybe we should have basic property support first, and store it there. Is min/max/default expressible in effect xml? <Input> attributes maybe?
> 
> It is likely that they can be expressed in xml as properties of <Effect> like "DisplayName"/"Author", tests are still needed. 
> And according to the current test, if I don't explicitly express them in xml, they will be equal to the number of <Input> nodes inside <Inputs>.
> 

I did some tests today. I didn't find a way to express min/max/default input count in XML.

I tried these ways:

* Property of <Effect>:

    <Effect>
        ...
        <Property name='MinInputs' type='uint32' value='1'/>
    </Effect>

* Sub property of <Inputs>:

    <Effect>
        ...
        <Inputs>
            <Property name='Min' type='uint32' value='1'/>
        </Inputs>
    <Effect>

* Attribute of <Inputs>:

    <Effect>
        ...
        <Inputs min='1'/>
    <Effect/>

Unfortunately, none of them work.