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, 9 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/render.h b/apps/plugins/sdl/progs/quake/render.h
index b5f8382c31..46cd4e326f 100644
--- a/apps/plugins/sdl/progs/quake/render.h
+++ b/apps/plugins/sdl/progs/quake/render.h
@@ -110,6 +110,15 @@ extern	int		reinit_surfcache;
 extern  refdef_t        r_refdef;
 extern vec3_t   r_origin, vpn, vright, vup;
 
+#ifdef USE_PQ_OPT1
+extern int      vpn_fxp[3], vright_fxp[3], vup_fxp[3];
+extern int      xscale_fxp, yscale_fxp, xcenter_fxp, ycenter_fxp;
+extern int              r_refdef_fvrectx_adj_fxp;
+extern int              r_refdef_fvrectright_adj_fxp;
+extern int              r_refdef_fvrecty_adj_fxp;
+extern int              r_refdef_fvrectbottom_adj_fxp;
+#endif
+
 extern  struct texture_s        *r_notexture_mip;