> > Extending TSGI is a bit of a black art but you seem to have figured it out. > > I'm looking at the swizzle fields in tgsi_texture_offset. Why do > those exist? I'm guessing it's just for the case that a bunch of > offsets get tightly packed in a constant slot. 0, 1, -1 would seem to > be very common offsets so a whole bunch of offsets might be encoded in > a single constant vector. If that's the intention, some comments > explaining this would be good.
Yes, you get the constants from the GLSL compiler in a swizzled vector, and rather than decoding that I just decided to use index + swizzles. I can add a comment about that. > > Also, I thought that the offsets had to be compile-time constants so > tgsi_texture_offset::File would always be PROGRAM_IMMEDIATE. If > that's true, why have the File field? And I think calim's answer is best for that, its what newer DX11 stuff can do, so I didn't want to revisit it all again in the future. Dave. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
