On Wed, May 6, 2009 at 6:06 PM, Denis Oliver Kropp <d...@directfb.org> wrote:
> Harinandan S wrote: > >> Hi All, >> Does DirectFB 1.3.0 onwards support OpenGL ES on TI OMAP 3 over linux >> framebuffer without X? Has anyone used this? >> > > I have a Zoom development kit which runs DirectFB on GL ES. Thanks. I'll cross-compile DirectFB 1.3 for OMAP 3 with OpenGL ES support and get started. Does DirectFB with OpenGL ES use 2D acceleration provided by OMAP 3? (e.g. Power VR 2D) > > > I've used GTK over DirectFB on TI DM6446 and found that the performance is >> not that fast. Especially opening windows of D1 size will take in the order >> of seconds (1 - 1.5 secs) to open. >> > > If there are just a few widgets, the overhead might be due to some pixel > format conversion. You should check dfbdump and maybe turn on the > "software-warn" > option to get a complete list of operations (except for gdk pixbuf etc. > code > that Lock()s a DirectFB surface). > Is the pixel format conversion you are talking about is conversion from 32 bpp to 16 bpp? I checked dfbdump and it prints the screen size and some info about surface buffer pools. I couldnt analyze the result except that the screen is 720 X 480 and the format is ARGB. > > > Is there any significant improvement using DirectFB with OpenGL ES on OMAP? >> > > Depends on the complexity of the application or toolkit. Heavy GTK or Qt > apps > cannot really take advantage at the moment, but there's some potential for > optimizations (display lists etc). > > -- > Best regards, > Denis Oliver Kropp > > .------------------------------------------. > | DirectFB - Hardware accelerated graphics | > | http://www.directfb.org/ | > "------------------------------------------" >
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