Re: Instruction Tracing

On 8/11/2024 12:27 PM, George Neuner wrote:

On Sun, 11 Aug 2024 02:41:01 -0500, BGB <cr88192@gmail.com> wrote:
 

On 8/10/2024 6:20 PM, Lawrence D'Oliveiro wrote:

On Sat, 10 Aug 2024 17:49:42 -0500, BGB wrote:
>

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.

>
Windows NT never meant for games?

>
Windows GDI isn't fast, but it isn't usually *that* slow either.
WinQuake and Quake2 both used GDI to good effect.
>
If Windows GDI performance is seriously broken, this is a different
issue from merely "not meant for games".

 GDI was fine for most anything *except* video games.
   If you really needed maximum performance, you used DirectX ... and
yes, DirectX was available on NT.

Though, "back in the day", it was used to good effect in WinQuake and Quake2 (neither of which used DirectX, IIRC).
And, Windows NT4 seemed to get OK performance with these, at least on a 500MHz Celeron (granted, this is from memory).
Game selection was limited at the time as a lot of other stuff would refuse to run on NT4.
...