https://bugs.freedesktop.org/show_bug.cgi?id=702 --- Comment #12 from Daniel Richard G. <skunk@xxxxxxxxxx> 2010-11-06 11:17:39 PDT --- > I think either this should be commited or instead it should be handled > by the driver and the DD_POINT_SIZE flag completely removed as it's > currently just broken. Since the plan initially was to remove the > whole _TriangleCaps stuff and r200 is the only driver which makes use > of this particular flag I'm leaning towards the latter. Sounds like a good way to go. Fewer idiosyncrasies in older drivers should be a win. > In fact, the driver is quite broken anyway wrt point size, since with > vertex programs you could output the point size per vertex, but the > driver might still use the 1-sized point primitive, since > _TriangleCaps DD_POINT_SIZE only looks at the global point size. Still a better bug to have, at least, since vertex programs are a newer construct anyway (and less likely to be used in CAD-type scenarios). > But I really have no idea why the driver tries to use the point > primitive instead of point sprite for 1-pixel points, otherwise it > would be easiest to just always use point sprite prim (at least for aa > points) which would get rid of both bugs. FWIW, I modified the "point" demo into a poor man's benchmark (by putting the glBegin(GL_POINTS) and glVertex*() calls inside large loops, and adding gettimeofday() calls), and I'm seeing basically no differences between 1.0 and 1.001 for glPointSize(). You'd think the 1-pixel-point primitives would be faster on some hardware, but r200 doesn't seem to special-case those. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
