RE: [GD-Windows] BitBlt() syncing to VBL

[Brian H. <bri...@py...>]

> The comment at the end about using 555 buffers is 
> interesting. Maybe that's why you are using GDI, not DDRAW? - 

Actually, I'm using 555 BECAUSE I'm using GDI, not the other way around.
GDI's 16-bit DIB sections are 555.

> I have used GDI in the past to do 555 to primary blits with 
> very few issues, it's very fast, esp. when you involve 
> stretching. However, I know of very few displays that 
> actually have a desktop running in 555 - almost everything 
> these days has a 565 desktop (in 16 bit mode). 

Correct.

> difference between the mac and PC is that the mac has a 555 
> desktop? Maybe the PC is being forced to do an expensive 
> conversion from 555 to 565.

It definitely is (as per the XLATEOBJ_hGetColorTransform thread of a
while ago), but I don't think that's accounting for all the difference.
Both machines have NVidia graphics accelerators, and they're both
running in 16-bit, and I don't think the GF series support a 555 mode.

Brian