Pull overflow with DirectX 11 on WinUAE 4.3+

[Leandro Jardim]

I've got this message on winuaelog.txt and the emulation got very sluggish since from the start.

My most basic configuration, in which that happen, is an A1200 quickstart, at fullscreen with Lagless VSync with 1 slice, and a WASAPI buffer length of 16384 and 48000Hz. No matter if sinc'ed at 50Hz or 60Hz.

It does not matter with which software I boot AmigaOS or what I am doing for that to happen.

My old computer in which I run WinUAE is a Windows 7 32 bit with DirectX 9 and WinUAE 4.3. The graphics card is an Intel HD 3000 and the sound card is a Realtek.

That happens with version 4.3.0 and with the new alpha too. With version 4.2.1 or below, it is OK!

[Toni Wilen]

But does it happen without lagless vsync? Lagless vsync = nothing is guaranteed.

[Leandro Jardim]

Originally Posted by Toni Wilen

But does it happen without lagless vsync? Lagless vsync = nothing is guaranteed.

Yes and no. The issue is more complicated than it seems:

If I start WinUAE with lagless vsync = pull overflow.
If I start WinUAE with lagless vsync and afterwards completely disable vsync in the middle of the emulation = pull overflow without vsync.

If I start WinUAE with vsync completely disabled = OK.
If I start WinUAE with vsync completely disabled and afterwards enable lagless vsync in the middle of the emulation = OK even with lagless vsync enabled!