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billb · Joined: 12 Dec 2007 Posts: 32

Hi, I'm hoping that someone who is knowledgeable about programming could look into this project ... I'm able to compile it OK on YDL6 / PS3 but so far running the binary (scaler) only results in locking up the system. Also, all the comments in the code are in Japanese... I know less about Japanese than I do programming ... :)

I first saw it being used in a video on YouTube showing Quake 2 running on the PS3:
http://www.youtube.com/watch?v=B9VUmWnpCbg
(I have one also, but I'm just using a mostly unmodified version of the port from icculus.org)

Here's where you can get the source (translated page): link
direct link to scaler.tar.gz

Thanks

billb · Joined: 12 Dec 2007 Posts: 32

I figured out what my problem was -- I had set my ps3fb memory to 4M to get more system RAM. So I took out the ps3fb=4M in my /etc/yaboot.conf file, rebooted, and it works! :)

billb · Joined: 12 Dec 2007 Posts: 32

snes9x-gtk running a game at the original resolution:

about to start scaler:

photo of scaler running -- snes9x-gtk is still running the game at the original resolution, but scaler has zoomed in on the center of the screen (3X):

To stop scaler from running, I use Alt-TAB to switch to the terminal window from which it was started and hit Ctrl-C.

So this should work for anything from sdlmame to playing movies -- anything that runs smoother at the original resolution instead of being scaled by the application running it, or simply can't be scaled by the application (like qemu running Win98). :)

EDIT: I have scaler starting with custom keyboard shortcuts now so I can zoom 2X 3X or 4X easily, and disable it with another key. Or I can use a script to automatically start it before a fullscreen game starts and automatically kill it on exit. What a great tool for PS3 Linux!

Example script:

Ocelot · Joined: 08 Dec 2007 Posts: 11

So what exactly does this all mean?
Better performance for video applications? Can you play HD videos in mplayer?

billb · Joined: 12 Dec 2007 Posts: 32

billb · Joined: 12 Dec 2007 Posts: 32

It would be nice to add 1.5X scaling to this scaler tool -- for example, if I wanted to use it with QEMU running Windows / Games at 640x480 and my PS3 is running at 1280x720, 1.5 X scaling would give me 960x720, filling the screen vertically.

I've already tried running Diablo under DOSBox, or QEMU / Win95 with a 1080i resolution on the PS3, and 2x scaling. So that gives me a nearly full screen (vertically) Diablo running at 1280x960 (on a 1920x1080 screen) and it runs great (maybe even better than normal?), but I usually run PS3 Linux at 1280x720 so 2x scaling is too much.

It would also be interesting to see it doing other things like antialiasing, but I started playing around with the code just to try and get a 1.5x mode going. I almost got it, but in fullscreen mode the image was offset to the right a bit.

EDIT: looking at it again, I think all I managed was to offset the image and didn't affect the scaling -- it doesn't appear to be a simple change as I had hoped

The relevant code appears to be in overlay/overlay001.c if anyone with some knowledge of this subject wants to take a look at it. For me, it's just a matter of trial and error since I have little to no idea of what I'm doing ... It might help if the comments were in English. ;-)

billb · Joined: 12 Dec 2007 Posts: 32

ouasse · Joined: 30 Jul 2007 Posts: 90 Location: Paris, France

why not write a full general purpose SPE scaler, and include it in a XV extension of Xorg, or at an upper level in libSDL ?

Kilonga · Joined: 12 Nov 2008 Posts: 1

Download the gzipped tarball of the source code mentioned above and then download the following file (patch): here.

Once you have both files copy them to your home directory and type the following commands: