I can see the disassembly, and often refer to it, but when displaying the disassembly, the single step button is greyed out.

My version won't. Is there a location I can get a more upto date version? I'm on the march 2009 version

I have never seen it crash, however I very very often get a failure when I try to debug a shader. It just comes up with something like "pixwin encountered a problem " and you can't debug the shader. The shader debugger is rubbish, it returns values that don't match real world values, it cannot handle loops, it's ...

[quote user="Shawn Hargreaves"]It's a shame you have such bad experience with Pix.  It's always worked great for me! [/quote] Then either you haven't got enough features in your shaders yet, add more till it breaks. Or you have a different version of pixwin that I do, mine is about as useful as a chocolate fire ...

The only bug was the surface format I was using, once I changed that the code worked. The problem was pixwin misreporting what was going on. Cost me half a day.

Okay it looks like it is pixwin failign again. I changed my coords texture to vector4 and the code worked. In pixwin I still have garbage. I have to say at this point do not use pixwin. It may be the only debugger we have, but it is so poor that it ends up sending you down the wrong path. I have wasted half a day trying to figure out bugs that ...

I changed the shader to have more formal parameters. //=====================================================================================================//  //=  Update the density map                                                                           =//  ...

I'm trying to enhance my fractal system and  have hit a problem that makes no sense to me This shader fragment doesn't work //=====================================================================================================//  ...

That's an interesting approach I will have to investigate. FRAPS works, sort of, so the approach must be valid, if his analysis is correct of course. I would have thought that it would fail if directx is in exclusive mode.

Sorry, I don't have $10,000 to spare. Proves it is possible though.