Fixed, RecursiveLightPoint(): don't try to sample SURF_NODRAW surface…

…s or surfaces with uninitialized lightmap size.

renderer/r_light.c

@@ -203,10 +203,10 @@ int RecursiveLightPoint(vec3_t color, mnode_t *node, vec3_t start, vec3_t end)
 
 	for (int i = 0; i < node->numsurfaces; i++, surf++)
 	{
-		if (!surf->samples)
+		if (!surf->samples || surf->light_smax == 0 || surf->light_tmax == 0) //mxd. Also skip surfaces with non-initialized lightmap size
 			continue; //mxd. No lightmap data. Was return 0;
 
-		if (surf->flags & (SURF_DRAWTURB | SURF_DRAWSKY)) 
+		if (surf->flags & (SURF_DRAWTURB | SURF_DRAWSKY) || surf->texinfo->flags & SURF_NODRAW) //mxd. Also skip NODRAW surfaces 
 			continue; // No lightmaps
 
 		mtexinfo_t *tex = surf->texinfo;

renderer/r_surface.c

@@ -2314,6 +2314,15 @@ static int fix_coord(int in, const int width)
 
 void R_SetupLightmapPoints(msurface_t *surf)
 {
+	// Sky / nodraw / water / transparent surfaces won't have light_smax/tmax set
+	if(surf->light_smax == 0 || surf->light_tmax == 0)
+	{
+		surf->lightmap_points = NULL;
+		surf->normalmap_normals = NULL;
+
+		return;
+	}
+
 	// Setup world matrix
 	vec3_t facenormal;
 	VectorCopy(surf->plane->normal, facenormal);