<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="address"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="Street"/>  <style>  </style> </head> <body lang=EN-GB link=blue vlink=purple> <div class=Section1> Daniel Amelang Wrote:<o:p></o:p> > Carl/whoever is listening: could a quick stopgap measure be to do a conversion from 24bpp<o:p></o:p> > to 32bpp before the image is handed over to pixman (or write a conversion function<o:p></o:p> > in pixman that cairo-xlib can call)? Ideally, one would want pixman to support 24bpp<o:p></o:p> > directly, but since that's a lot of work, and this isn't a common case, it might <o:p></o:p> > be worth considering a slow and messy approach. People don't call _acquire_(source|dest)_image<o:p></o:p> > in their display loop anyways, right?<o:p></o:p> <o:p> </o:p> While I am not using cario I am hovering on the list because almost all of my work is writing <o:p></o:p> code for drawing Raster and Vector map’s as fast as possible on X11 targets.<o:p></o:p> <o:p> </o:p> In my line of work 8,16 and 24 bit display depths are very common. 32 bit depth’s are the least common :>><o:p></o:p> <o:p> </o:p> A lot of old hardware is out in the world, even SUN is shipping quite old graphics cards with their<o:p></o:p> new kit and the embedded environment (both PDA [eg. Sharp Zaurus] and VME based kit) tend <o:p></o:p> to use old graphics chips with limited memory, meaning that you are lucky to get 24bit depth.<o:p></o:p> <o:p> </o:p> Regards<o:p></o:p> Damian<o:p></o:p> Damian Dixon, BSc(Hons), BSc(Hons), FRGS. TENET Technology  Ltd., <st1:Street w:st="on"><st1:address w:st="on">North Heath Lane</st1:address></st1:Street>, Horsham, West Sussex, RH12 5UX,<st1:country-region w:st="on"><st1:place w:st="on">United Kingdom</st1:place></st1:country-region> Tel: +44 1403 273173  Fax: +44 1403 273123 Email: damian.dixon at tenet.co.uk <a href="http://www.tenet.co.uk">http://www.tenet.co.uk</a> ************************************************************************* Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of TENET Technology Ltd. This email and any attachments may contain confidential information and/or copyright material. It is intended for the use of the addressee only and any unauthorised use may be unlawful. If you receive this email by mistake, please advise the sender by using the reply facility in your email software. *************************************************************************<o:p></o:p> <o:p> </o:p> <o:p> </o:p> </div> </body> </html>