The SDL Primitive Generator, SPriG, is the new name for the minSGE project.  It has come a long way and is starting to come together now.  I have some touches to add to certain functions, a couple more functions to implement, and a lot of convenience/speed inlined functions (macros for C) to write.  The basic functionality is there already, including several different alpha-blending modes (see the new page for details!).