#5866: Fix surface culling through portals, and use the correct number of frustum planes.

code/rend2/tr_local.h

@@ -1008,6 +1008,7 @@ typedef enum {
 	VPF_DEPTHCLAMP      = 0x04,
 	VPF_ORTHOGRAPHIC    = 0x08,
 	VPF_USESUNLIGHT     = 0x10,
+	VPF_FARPLANEFRUSTUM = 0x20
 } viewParmFlags_t;
 
 typedef struct {

code/rend2/tr_main.c

@@ -685,11 +685,13 @@ int R_CullBox(vec3_t worldBounds[2]) {
 	int             i;
 	cplane_t       *frust;
 	qboolean        anyClip;
-	int             r;
+	int             r, numPlanes;
+
+	numPlanes = (tr.viewParms.flags & VPF_FARPLANEFRUSTUM) ? 5 : 4;
 
 	// check against frustum planes
 	anyClip = qfalse;
-	for(i = 0; i < 4 /*FRUSTUM_PLANES*/; i++)
+	for(i = 0; i < numPlanes; i++)
 	{
 		frust = &tr.viewParms.frustum[i];
 
@@ -771,7 +773,7 @@ int R_CullPointAndRadiusEx( const vec3_t pt, float radius, const cplane_t* frust
 */
 int R_CullPointAndRadius( const vec3_t pt, float radius )
 {
-	return R_CullPointAndRadiusEx(pt, radius, tr.viewParms.frustum, ARRAY_LEN(tr.viewParms.frustum));
+	return R_CullPointAndRadiusEx(pt, radius, tr.viewParms.frustum, (tr.viewParms.flags & VPF_FARPLANEFRUSTUM) ? 5 : 4);
 }
 
 /*
@@ -1132,6 +1134,7 @@ void R_SetupFrustum (viewParms_t *dest, float xmin, float xmax, float ymax, floa
 		dest->frustum[4].type = PLANE_NON_AXIAL;
 		dest->frustum[4].dist = DotProduct (farpoint, dest->frustum[4].normal);
 		SetPlaneSignbits( &dest->frustum[4] );
+		dest->flags |= VPF_FARPLANEFRUSTUM;
 	}
 }
 
@@ -1316,6 +1319,8 @@ void R_SetupProjectionOrtho(viewParms_t *dest, vec3_t viewBounds[2])
 		dest->frustum[i].type = PLANE_NON_AXIAL;
 		SetPlaneSignbits (&dest->frustum[i]);
 	}
+
+	dest->flags |= VPF_FARPLANEFRUSTUM;
 }
 
 /*
@@ -1719,6 +1724,8 @@ qboolean R_MirrorViewBySurface (drawSurf_t *drawSurf, int entityNum) {
 
 	newParms = tr.viewParms;
 	newParms.isPortal = qtrue;
+	newParms.zFar = 0.0f;
+	newParms.flags &= ~VPF_FARPLANEFRUSTUM;
 	if ( !R_GetPortalOrientations( drawSurf, entityNum, &surface, &camera, 
 		newParms.pvsOrigin, &newParms.isMirror ) ) {
 		return qfalse;		// bad portal, no portalentity
@@ -2572,6 +2579,8 @@ void R_RenderPshadowMaps(const refdef_t *fd)
 					dest->frustum[j].type = PLANE_NON_AXIAL;
 					SetPlaneSignbits (&dest->frustum[j]);
 				}
+
+				dest->flags |= VPF_FARPLANEFRUSTUM;
 			}
 
 			for (j = 0; j < shadow->numEntities; j++)

code/rend2/tr_surface.c

@@ -308,7 +308,7 @@ static void RB_SurfaceSprite( void ) {
 			ri.Printf(PRINT_WARNING, "Multiple sun flares not supported\n");
 			return;
 		}
-		if (R_CullPointAndRadiusEx(ent->e.origin, ent->e.radius, backEnd.viewParms.frustum, ARRAY_LEN(backEnd.viewParms.frustum)) == CULL_OUT)
+		if (R_CullPointAndRadiusEx(ent->e.origin, ent->e.radius, backEnd.viewParms.frustum, (backEnd.viewParms.flags & VPF_FARPLANEFRUSTUM) ? 5 : 4) == CULL_OUT)
 			return;
 		colors[0] = colors[1] = colors[2] = colors[3] = ent->e.shaderRGBA[glRefConfig.framebufferObject] / 255.0f;
 		if (colors[0] == 0)

code/rend2/tr_world.c

@@ -119,11 +119,6 @@ static qboolean	R_CullSurface( msurface_t *surf ) {
 		{
 			return qtrue;
 		}
-
-		if ( sphereCull == CULL_IN )
-		{
-			return qfalse;
-		}
 	}
 
 	if (surf->cullinfo.type & CULLINFO_BOX)
@@ -140,11 +135,6 @@ static qboolean	R_CullSurface( msurface_t *surf ) {
 		{
 			return qtrue;
 		}
-
-		if ( boxCull == CULL_IN )
-		{
-			return qfalse;
-		}
 	}
 
 	return qfalse;
@@ -782,6 +772,8 @@ R_AddWorldSurfaces
 =============
 */
 void R_AddWorldSurfaces (void) {
+	int planeBits, dlightBits, pshadowBits;
+
 	if ( !r_drawworld->integer ) {
 		return;
 	}
@@ -809,19 +801,26 @@ void R_AddWorldSurfaces (void) {
 		tr.refdef.num_pshadows = 32 ;
 	}
 
+	planeBits = (tr.viewParms.flags & VPF_FARPLANEFRUSTUM) ? 31 : 15;
+
 	if ( tr.viewParms.flags & VPF_DEPTHSHADOW )
 	{
-		R_RecursiveWorldNode( tr.world->nodes, 31, 0, 0);
+		dlightBits = 0;
+		pshadowBits = 0;
 	}
 	else if ( !(tr.viewParms.flags & VPF_SHADOWMAP) )
 	{
-		R_RecursiveWorldNode( tr.world->nodes, 15, ( 1 << tr.refdef.num_dlights ) - 1, ( 1 << tr.refdef.num_pshadows ) - 1 );
+		dlightBits = ( 1 << tr.refdef.num_dlights ) - 1;
+		pshadowBits = ( 1 << tr.refdef.num_pshadows ) - 1;
 	}
 	else
 	{
-		R_RecursiveWorldNode( tr.world->nodes, 31, ( 1 << tr.refdef.num_dlights ) - 1, 0 );
+		dlightBits = ( 1 << tr.refdef.num_dlights ) - 1;
+		pshadowBits = 0;
 	}
 
+	R_RecursiveWorldNode( tr.world->nodes, planeBits, dlightBits, pshadowBits);
+
 	// now add all the potentially visible surfaces
 	// also mask invisible dlights for next frame
 	{