illuminated surfaces are now sorted by texture, giving a good fps

[xonotic/darkplaces.git] / gl_rsurf.c

diff --git a/gl_rsurf.c b/gl_rsurf.c
index 07cc66a05a619eabb8308783737ce1a3119eadfc..33277fa935b9b3c0732b00645ab3747d43104952 100644 (file)
--- a/gl_rsurf.c
+++ b/gl_rsurf.c
@@ -949,6 +949,23 @@ static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboo
        }
 }
 
+static msurface_t *r_q1bsp_getlightinfo_surfaces;
+
+int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
+{
+       int a = *(int*)ap;
+       int b = *(int*)bp;
+       const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
+       const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
+       if (as->texture < bs->texture)
+               return -1;
+       if (as->texture > bs->texture)
+               return 1;
+       return a - b;
+}
+
+extern cvar_t r_shadow_sortsurfaces;
+
 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs, unsigned char *visitingleafpvs, int numfrustumplanes, const mplane_t *frustumplanes)
 {
        r_q1bsp_getlightinfo_t info;
@@ -1027,6 +1044,11 @@ void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, floa
 
        *outnumleafspointer = info.outnumleafs;
        *outnumsurfacespointer = info.outnumsurfaces;
+
+       // now sort surfaces by texture for faster rendering
+       r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
+       if (r_shadow_sortsurfaces.integer)
+               qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
 }
 
 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)