Sorry, I was not clear that my interest in OpenGLES was to try to put Elisa on some limited hardware where OpenGL is not available.
Nevertheless, for people who want to run any pigment application with the open source ATI driver, here's the trick : 1) Install driconf (available in Ubuntu) 2) Launch driconf. It will create a .drirc file in your $HOME 3) Choose the option to "never synchronize with vertical refresh, ignore the choice of the application". That's it, pigment applications will now work perfectly. (even my sample pigment test codes were broken. like my pigment solver for the http://www.frustr8tor.nl/ puzzle ) There's no need to restart X. The use of driconf GUI is not mandatory. All you have to do is to check that, in your .drirc, there's the following line : <option name="vblank_mode" value="0" /> (the "0" value is the important bit) Thanks a lot to Harry which explained me that stuff. Lionel On Tue, Feb 3, 2009 at 5:11 PM, Loïc Molinari <[email protected]> wrote: > Hi Lionel, > > AFAICT there's been no change in Pigment that can have triggered such a > slowness problem in Elisa. It seems to me like your driver is switching > to a software path. Did you recently update your Mesa/DRI open source > driver? Were you using the proprietary ATI driver before? > > Regarding OpenGL ES, Pigment has a plugin to run over that API but it's > only dedicated to embedded systems that are shipping most of the time > without OpenGL support. For ease of development, memory consumption and > speed reasons, people working in that market only ship (proprietary) > OpenGL ES implementations. AFAIK there's no hardware accelerated OpenGL > ES implementation for the desktop, apart from the Imagination SDK > dedicated to developers. And anyway, OpenGL ES is not really meant to be > used on the desktop. > > Regards. > > On Tue, 2009-02-03 at 16:33 +0100, Lionel Dricot wrote: > > Hello, > > > > For a few weeks, my Elisa is unusable because of slowness (rotating an > > icon take approximately 30 seconds) and display a lot of garbage on > > the screen. It might be related (but I'm not sure) with the fact that > > I use the free ATI driver (but it should provide reasonnably good 3D > > performances and the few OpenGL applications I have work perfectly). > > > > Has anybody else the same experience ? (Warning : I'm not sure it is > > driver related at all. It's just an intuition) > > > > > > This also raise some question in my head about about performances in > > Elisa and pigment. I've seen that pigment can use OpenGLES but is it > > an option for Elisa, for example ? > > > > Thanks for sharing your experiences, > > > > Lionel > > -- > Loïc Molinari <[email protected]> >
