looking on Digg for something else, Regardless I am here now and would just like

to say cheers for a remarkable post and a all round interesting blog (I also love the theme/design), I don’t have time to look

over it all at the minute but I have book-marked it and also included your RSS feeds,

so when I have time I will be back to read more, Please do keep up the superb

jo. ]]>

Sorry that I took so long to reply to your question. The answer here is “yes”, since samples at the extreme edges of the hemisphere can potentially result in a negative contribution when projected onto the basis vectors. HL2 basis is exactly like spherical harmonics in this regard, except that the way the basis vectors are oriented results in ideal projections for a hemisphere since each basis vector has the same projection onto the local Z axis (normal) of the baking point. In fact, HL2 is pretty much exactly the same as L1 SH, except it has different weighting and the basis vectors are rotated (in SH the linear cosine lobes are lined up with the major X/Y/Z axes). This is actually noted in Habel’s paper from 2010 where they introduce H-basis: https://www.cg.tuwien.ac.at/research/publications/2010/Habel-2010-EIN/Habel-2010-EIN-paper.pdf (see section 2.1)

]]>Personally I keep a close eye on papers that presentations that look into alternative forms of storing baked sample points for a scene. For instance there are some presentations that have discussed using a sparse 3D grid to store data without needing vertices or 2D maps, and others that have used basis functions to “splat” the contribution of arbitrary points onto a scene.

]]>I have a question here.

How do you think about vertex baking and texel baking?

Why nowadays people tend to use texel baking instead of vertex baking? ]]>