Hi, friends:
Sorry for my stupid question but I think right here can help me.
As I know, DMA/CommandParser or no matter what you call can provide
asynchronous execuation of graphics commands with CPU execution, and the
direct I/O of course is synchronous with instructions executed on CPU, but
what is here 'synchronous' means? I take an example of direct I/O triangle
setting for 3D engine to render triangle as the below piece of code:
/*
** set graphics contexts
*/
/*
** using direct I/O to write 3 vertex data to 3D engine ** register
for rendering a triangle
*/
movl vertex_data1, VP_register
movl vertex_data2, VP_register
movl vertex_data3, VP_register
does 'synchronous' mean CPU won't finish the last one mov instruction until
the 3D engine finish rendering this triangle? Or whatever other meaning?
Thanks very much.
Regards
------------------------------------------------------------------------------
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev
--
_______________________________________________
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel
