My shader doesn't work on Win 7

**Nobuyuki** · 17th March 2011, 05:27 AM

However, it seems to work just fine on WinXP. I tested it with a number of people, including one person who had the same series of video card that I did, only a different OS. I have tried to limit the potential sources of the problem by process of elimination, but it seems that it works on XP machines, and doesn't work on 7. The result on 7 is that any sprite with the shader applied doesn't appear at all (!)

Is this a bug, or possibly an issue with my implementation of the shader? To note: My shader uses > 64 instructions, so it targets SM3.0. I'm unsure if this makes a difference, or if SM3.0 is completely unsupported, but I'm not doing anything special that couldn't be done in SM2.0 save for the number of instructions used.

Attached is an example.

P.S. My apologies in advance if this belongs in the shader development forum -- I'm concerned, however, that it may be a bug in the HWA implementation across platforms, which is why I posted it here. Please move the thread if it doesn't belong here.

Edit: Some further information. Before this shader grew to be more than 64 instructions, it was compiled to the 2.0 target, which worked correctly on Win 7 machines. I suspect that the problem may lie somewhere in the SM3.0 implementation on Win 7. Also, for reference, I'm using build 249.