If I create an OcclusionQuery on a card that does not support occlusion queries, and a device reset occurs before I can call Dispose on the object, an InvalidOperationException is thrown when trying to recreate the unmanaged resource. D3D aside: why is query support determined at runtime, rather than through caps?

The August 2009 DX SDK does indeed fix this problem.

It looks like it converts the dotX file's vertices and normals into a right-handed system and possibly changes triangle winding, but via what method(s)? Does the importer assume the file is left-handed? I'm using Blender and Deep Exploration to produce some test models and I'm trying to find out what dotX export settings to use (swap ...

[quote user="jwatte"]I gave up on the limitations of SpriteFont (having to go through SpriteB*tch and all), and wrote my own. It's really not that hard. At that point, you can write your own font texture generator, too. [/quote]I want to do this, but I also want to base it on Valve's signed distance field presentation, so a ...

[quote user="Shawn Hargreaves"] I'm curious why you have zeros in your strings in the first place? Why not just replace these with some other character before you draw the string? [/quote] That's what I do right now, but I'd rather avoid allocation.  The root cause of the problem is another developer misusing StringBuilder, ...

It's possible to pass strings with non-terminating null characters to SpriteBatch.DrawString, but not to draw them.  I tried adding the null character to the Characters range manually, but it can't be serialized to XML.  I'd like to know if it's possible to enable this with a content pipeline extension.

Any other suggestions?

Each card I've tested has discrete memory. I'm not compositing any GUI elements on the 3D window, so I don't think GDI explains it. The device is definitely created with the multithreaded flag.

This only applies to Windows 7 and NVIDIA 180+ drivers on several laptops with 2.0 Ghz+ Core 2 Duos.  I haven't tested on a multicore desktop or with AMD video cards. I have a few windowed applications that render on a separate thread from the GUI thread.  If the desktop compositor is enabled (Aero Glass?), and v-sync is disabled, the GUI ...

Will there be a new DX SDK for the Windows 7 RTM launch?