On Wednesday 21 August 2002 10:37 pm, Owen Taylor wrote: | Peter Kaczowka <[EMAIL PROTECTED]> writes: | > Without understanding Render too well, I would guess that some Render | > operations could be sped up using MMX. I'm not volunteering to do it, | > but for anyone interested I think you'll find that using SIMD and coding | > MMX is great fun. But then again I'm old school, and coding assembler | > still strikes me as more fun than say Java. | > | > If MMX is already being used in Render or has already tried, I'm sorry | > to imply that no one has thought of this before. | | I have some code for MMX acceleration of common Render operations | around, that I keep meaning to clean up and give to Keith. :-(
Can someone update, please: have this code found its way into CVS? | | (And there is a lot of optimization of the software fallbacks that can | be done without reference to MMX... you can get maybe 5x improvement | over the current code with plain C, and then MMX gives you an extra 50%.) | | The hardware I've tested on doesn't seem to do burst-mode reads from | video memory, so there is limit to how well you can do when | software compositing directly to the frame buffers. There are definitely | big improvements by carefully managing when things are in video memory, | when in software, and when in both places. | | Regards, | Owen | _______________________________________________ | Render mailing list | [EMAIL PROTECTED] | http://XFree86.Org/mailman/listinfo/render -- Vadim Plessky http://kde2.newmail.ru (English) 33 Window Decorations and 6 Widget Styles for KDE http://kde2.newmail.ru/kde_themes.html KDE mini-Themes http://kde2.newmail.ru/themes/ _______________________________________________ Render mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/render
