[PATCH 14/15] wined3d: Add device->isInDraw checks in LoadLocation.

[Allan Tong]

On Sun, Apr 6, 2008 at 5:06 PM, Alexander Dorofeyev <alexd4 at inbox.lv> wrote:
>
>  Prevents calling ActivateContext while holding gl lock, e.g. when
> preloading texture in sampler().

There may be a problem here with drawPrimitive, which calls
LoadLocation before ActivateContext while having isInDraw=TRUE.  If
the primary render target is an offscreen FBO surface, LoadLocation
will follow the SFLAG_INTEXTURE path and it may end up making gl calls
without a context in place.

 - Allan