Keith Whitwell wrote on 2010-02-12 13:39: > On Fri, 2010-02-12 at 04:32 -0800, Micha?? Kr??l wrote: > >> Module: Mesa >> Branch: master >> Commit: aa0b671422880b99dc178d43d1e4e1a3f766bf7f >> URL: >> http://cgit.freedesktop.org/mesa/mesa/commit/?id=aa0b671422880b99dc178d43d1e4e1a3f766bf7f >> >> Author: Michal Krol <mic...@vmware.com> >> Date: Fri Feb 12 13:32:35 2010 +0100 >> >> util: Fix descriptors for R32_FLOAT and R32G32_FLOAT formats. >> > > Michal, > > Is this more like two different users expecting two different results in > those unused columns? > > In particular, we definitely require the missing elements to be extended > to (0,0,0,1) when fetching vertex data, and probably also in OpenGL > texture sampling (if we supported these formats for that). > > Gallium should follow D3D rules, so I've been following D3D here. Also, util_unpack_color_ub() in u_pack_color.h already sets the remaining fields to 0xff.
Note that D3D doesn't have the problem with expanding vertex attribute data since you can't have X or XY vertex positions, only XYZ (with W extended to 1 as in GL) and XYZW. > Brian added a table of differences between GL and other APIs recently to > gallium/docs - does your change agree with that? > > Where's that exactly, I can't find it? ------------------------------------------------------------------------------ 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 _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
