Re: bad performance when running SimpleSample in fullscreen

[Please do not mail me a copy of your followup]

=?Utf-8?B?U2hvZ3Vu?= <Shogun@xxxxxxxxxxxxxxxxxxxxxxxxx> spake the secret code
<4E8DE2C4-4492-464C-B108-8735D125F88C@xxxxxxxxxxxxx> thusly:

If it renders frames when the app is idle, should the fps then not be higher
than 60? My FPS is exactly 60 according to PIX.

I already explained that you can get a busy CPU wait during Present.

I tried putting a sleep(20) into the the message loop to see if the process
then would yield for other processes, with no luck.

Then I tried to build my own D3D application, with a message loop like this:

while(GetMessage(&msg))
{
TranslateMessage(msg);
DispatchMessage(msg);
}

switch(msg)
{
... case WM_QUIT:
exit();
break;
}

and a windows procedure where i handle WM_PAINT this way:
WM_PAINT:
return DefaultWndProc(msg);


With a mesage loop like this and D3D setup to only render on vsync, i have
the same problems.

That would mean you have 100% CPU usage even when your app isn't doing
anything, which clearly is not possible. So what you describe above
can't be what you did.
--
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