If anyone (Alistair?) would like to look at this patch, you can download
it from
http://x.mame.net/download/xmame-0.37b15.1-xv-ext.patch.gz
Also, his FLTK frontend is available from
http://x.mame.net/download/fmame-0_8.tgz
There's a followup message concerning the speed of this Xv patch vs. the
current one. I don't know how much of the speed hit is due to other
differences between 0.37b15 and 0.65.1, though.
----- Forwarded message from [EMAIL PROTECTED] -----
Date: Mon, 17 Feb 2003 10:46:52 +0100
From: [EMAIL PROTECTED]
Subject: XV extension for MAME
To: [EMAIL PROTECTED]
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Hi,
this weekend I've made a wonderful hack on the XMAME source code and I
would like to propose to you my work.
One of the most annoying things in MAME is that the options -scale
heavily slow down the emulator even for a 2-factor scaling. Some days
ago I've discovered that MPlayer can resize the window in which the
movie is played without any significant CPU overhead. I've given a
look at the documentation and I've soon discovered that this features
was achieved with the use of the XV extension provided by the
X Server.
XV is an extension of the X Server which allows direct drawing of a
video output on the screen. With XV the works of resizing the image is
left to the video cards with a significant advantage. Tipically this
extension works with images in YUV format. You can test if your
X Server + Video Card support the XV extensione with the "xvinfo"
utilities. The only disavantage of this technology is a loss of
precision in the image because in YUV formats the color information is
subsampled.
After some work I've implemented this features for the MAME X11
display and it works very well! Now I can resize the image to
fullscreen dimension without any slow down!!
I send to you the patch for the 0.37b15.1 version of XMAME (sorry but
that's is the most recent version I have).
Also I send to you the latest version of FMAME :
the MAME frontend I've made with the FLTK libraries.
I hope you will give me some feedback about the XV extension for XMAME.
best regards,
--
Francesco Abbate <[EMAIL PROTECTED]>
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