OpenEuphoria

Re: DirectX / COM Interfaces (Attn Matt Lewis)

• Posted by Matt Lewis <matthewwalkerlewis at gmail.com> Feb 12, 2007
• 502 views

Chris Bensler wrote:
> 
> I'm playing with DirectX and have ported some of the SDK demos..
> I've run into a snag trying to create a vertex buffer. It appears that the
> interface
> pointer that is returned is not valid.
> Other interfaces seem to work, though I haven't extensively tested.
> 
> I've noticed that your (Matt's) directX8 dxdemo.exw avoids using a vertex
> buffer
> resource and opts for a user defined buffer and calls DrawPrimitiveUP. Is this
> for the reason I've mentioned?

Could have been.  It was so long ago, I really don't remember. :(

> Do you have any idea why it might be failing to create a vertex buffer
> resource?
> 
> I'm thinking that I may need to use QueryInterface to resolve the interface
> inheritance?

That could be.  I've come across several things where the default interface
that you get isn't the one you really wanted.

Matt