I have added a per­ma­nent page with a sum­ma­ry of the most pop­u­lar posts on this blog. I also tried to add mean­ing­ful tags to all posts. Here are the most impor­tant tags:

Content type tags

• down­load — a down­load is avail­able is this post
• gem — a code snip­pet or oth­er copy-paste thing is available
• math — posts that are heavy on math formulae

Topic tags

• atmos­pher­ic scat­ter­ing — posts relat­ed to atmos­pher­ic effects
• gam­ma — posts relat­ed to dis­play gamma
• hacks of life — lit­tle shell tricks or oth­er things
• nor­mal map­ping — posts about nor­mal mapping
• pho­tom­e­try — posts relat­ed to photometry
• phys­i­cal­ly based shad­ing — posts relat­ed to PBS (or PBR)