Re: Instruction Tracing

BGB <cr88192@gmail.com> writes:
 

Meanwhile, saw a video recently where someone had ported Doom to a
233 MHz PowerPC (running Windows NT4) machine and, its performance
was not good...
>
Not obvious is what combination of factors conspired to cause Doom
to apparently run at single-digit framerates.
>
Video mentioned that it was drawing using GDI calls, but this by
itself wouldn't explain the level of slowness seen in the video.
>
Like, presumably, this would require around 90% + of the clock
cycles going into overhead, which seems a bit much.
>
>
Reference:
https://www.youtube.com/watch?v=LAkSJ-HqKw8 

 
I think NT4 was before CreateDIBSection existed.  Probably much slower
without that.