Re: [B2-devel] TODO before release ?

[Christian B. <cb...@st...>]

Hi!

On Fri, Mar 23, 2001 at 09:49:08AM +0100, Gwenole Beauchesne wrote:
> In xmame, they used an interesting trick: setting hooks for DGA1 and DGA2
> functions.

Using XFree 4.0.2 with a Matrox G450 the current DGA1 code in B2 works
perfectly in 8-bit mode, shows some false colors and "swapped" pixels in
16-bit mode (my guess is that reading from the frame buffer doesn't
endianess-correct the pixel data; moving the mouse pointer disturbs the
areas underneath), and is messed up in 32-bit mode (looks like it's using
an incorrect bytes-per-row; or maybe I messed up and used a 24 bpp packed
mode instead of a 32 bpp one; I'll have to recheck).

Using XFree 4.0.1a with an NVidia TNT2 and NVidia's drivers results in
a complete system lockup when trying the "dga" DGA2 demo program that comes
with XFree. I have yet to test B2/DGA1 on that setup.

> [dlopen()]
> I don't know about Windows nor Irix nor HP/UX. Do you know a
> GPL-compatible library that wraps those functions on as many systems as
> possible ?

Appearently, libltdl (part of libtool) is such a thing. The docs say it works
on Solaris/Linux/BSD (using dlopen), HP-UX (using shl_load), Windows (using
LoadLibrary), and BeOS (using load_add_on). AmigaOS is missing but that's
using native 68k emulation anyway.

Bye,
Christian

-- 
  / Coding on PowerPC and proud of it
\/ http://www.uni-mainz.de/~bauec002/