From 285ed0ff0a8dcabefd40aafea7fd862c96348915 Mon Sep 17 00:00:00 2001 From: havoc Date: Sat, 19 Mar 2011 22:36:02 +0000 Subject: [PATCH] added r_usesurfaceculling cvar which defaults on, this new code reduces the number of surfaces drawn each frame, which is not always a speed gain but is usually helpful git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10943 d7cf8633-e32d-0410-b094-e92efae38249 ::stable-branch::merge=727e2d32b784925be5c2dec2a5bea3807e8af850 --- gl_rsurf.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/gl_rsurf.c b/gl_rsurf.c index f04bb2b6..e2827766 100644 --- a/gl_rsurf.c +++ b/gl_rsurf.c @@ -28,6 +28,7 @@ cvar_t r_ambient = {0, "r_ambient", "0", "brightens map, value is 0-128"}; cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"}; cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"}; cvar_t r_useportalculling = {0, "r_useportalculling", "1", "improve framerate with r_novis 1 by using portal culling - still not as good as compiled visibility data in the map, but it helps (a value of 2 forces use of this even with vis data, which improves framerates in maps without too much complexity, but hurts in extremely complex maps, which is why 2 is not the default mode)"}; +cvar_t r_usesurfaceculling = {0, "r_usesurfaceculling", "1", "improve framerate by culling offscreen surfaces"}; cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"}; /* @@ -532,6 +533,24 @@ void R_View_WorldVisibility(qboolean forcenovis) } } } + + if (r_usesurfaceculling.integer) + { + int k = model->firstmodelsurface; + int l = k + model->nummodelsurfaces; + unsigned char *visible = r_refdef.viewcache.world_surfacevisible; + msurface_t *surfaces = model->data_surfaces; + msurface_t *surface; + for (;k < l;k++) + { + if (visible[k]) + { + surface = surfaces + k; + if (R_CullBox(surface->mins, surface->maxs)) + visible[k] = false; + } + } +} } void R_Q1BSP_DrawSky(entity_render_t *ent) @@ -1579,6 +1598,7 @@ void GL_Surf_Init(void) Cvar_RegisterVariable(&r_lockpvs); Cvar_RegisterVariable(&r_lockvisibility); Cvar_RegisterVariable(&r_useportalculling); + Cvar_RegisterVariable(&r_usesurfaceculling); Cvar_RegisterVariable(&r_q3bsp_renderskydepth); Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes"); -- 2.39.2