quake: merge some fixed-point optimizations from PocketQuake

The PocketQuake project, available below, has some nice fixed-point code:

https://web.archive.org/web/20150412233306/http://quake.pocketmatrix.com/PocketQuake0062_src.zip

I'd like to see most of them merged into our Quake port. This commit
gives +0.9FPS on ipod6g. (A big change given that it was running at
only 9.7FPS to begin with!)

Change-Id: I91931bdd5c22f14fb28616de938a03b4e7d7b076

1 files changed, 12 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/quakedef.h b/apps/plugins/sdl/progs/quake/quakedef.h
index b16d9b72f3..8328154c0b 100644
--- a/apps/plugins/sdl/progs/quake/quakedef.h
+++ b/apps/plugins/sdl/progs/quake/quakedef.h
@@ -25,6 +25,18 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include <stdarg.h>
 #include <setjmp.h>
 
+#define FIXEDPOINT_OPT // FW: enable fixed-point optimizations
+
+/* Fixed-point optimizations, thanks to Pocket Quake and Dan East. */
+#ifdef FIXEDPOINT_OPT
+#define USE_PQ_OPT
+#define USE_PQ_OPT1
+//#define USE_PQ_OPT2
+//#define USE_PQ_OPT3 // don't use
+#define USE_PQ_OPT4
+//#define USE_PQ_OPT5
+#endif
+
 #define QUAKE_GAME                      // as opposed to utilities
 
 #undef VERSION