So far: SDL 1.3 officially compiles. Whether it works is another story.
I’ve created 7 patches so far, four of which were created in logical pairs, one of which was completely useless. The 7th patch (SDL-1-3_patch06.diff) was sent out to the haiku-gsoc mailing list today, and should allow the code to compile. Note that not all functionality is implemented in the video code.
This is a companion discussion topic for the original entry at https://www.haiku-os.org/blog/antifinidictor/2011-07-15_gsoc_2011_midterm_milestone_report/