- fixed: The flat drawing code assumed that the first element of the light list originated from the sector itself. This had been true formerly but in some situations it no longer is.

src/gl/scene/gl_flats.cpp

@@ -546,7 +546,7 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 		if (x.ffloors.Size())
 		{
 			light = P_GetPlaneLight(sector, &frontsector->floorplane, false);
-			if ((!(sector->GetFlags(sector_t::floor)&PLANEF_ABSLIGHTING) || light!=&x.lightlist[0])	
+			if ((!(sector->GetFlags(sector_t::floor)&PLANEF_ABSLIGHTING) || !light->fromsector)	
 				&& (light->p_lightlevel != &frontsector->lightlevel))
 			{
 				lightlevel = *light->p_lightlevel;

src/p_3dfloors.cpp

@@ -584,6 +584,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 		lightlist[0].extra_colormap = sector->ColorMap;
 		lightlist[0].blend = 0;
 		lightlist[0].flags = 0;
+		lightlist[0].fromsector = true;
 		
 		maxheight = sector->CenterCeiling();
 		minheight = sector->CenterFloor();
@@ -605,6 +606,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 				newlight.extra_colormap = rover->GetColormap();
 				newlight.blend = rover->GetBlend();
 				newlight.flags = rover->flags;
+				newlight.fromsector = false;
 				lightlist.Push(newlight);
 			}
 			else if (i==0)
@@ -619,6 +621,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 					lightlist[0].extra_colormap = rover->GetColormap();
 					lightlist[0].blend = rover->GetBlend();
 					lightlist[0].flags = rover->flags;
+					lightlist[0].fromsector = false;
 				}
 			}
 			if (rover->flags&FF_DOUBLESHADOW)
@@ -643,6 +646,7 @@ void P_Recalculate3DFloors(sector_t * sector)
 						newlight.blend = 0;
 					}
 					newlight.flags = rover->flags;
+					newlight.fromsector = false;
 					lightlist.Push(newlight);
 				}
 			}

src/p_3dfloors.h

@@ -123,6 +123,7 @@ struct lightlist_t
 	int						flags;
 	F3DFloor*				lightsource;
 	F3DFloor*				caster;
+	bool					fromsector;
 };