On Mon, 2010-01-11 at 07:39 -0800, Corbin Simpson wrote: > Pardon the subject pun, it was totally necessary at this early hour. :3 > > If the scissor test is enabled, and the scissors obscure the entire > framebuffer, should drawing calls still be run? Talking on IRC, it > seems like there's a valid use-case for performance testing, and I'm > of the mind that anybody that deliberately sets up the pipeline and > scissor that way probably intended for it.
I can't think of any application-visible side-effects which would affect the correctness of either choice. > I just want a clarification so I know whether I should revert > bfcafbe15dc, and also I wanted to document it. There are probably interactions with multiple-sized framebuffer attachments that will make this test harder -- given the different framebuffer sizes, it probably becomes the viewport rectangle that you want to test against, if your hardware supports different-sized MRTs. Unfortunately it's a bit of a pain to extract the viewport rectangle in current Gallium as we've got it encoded as a transformation rather than a box. Keith ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
