- added an intermediate data structure to decouple the rendering from the immediate map data.

This will be needed for sectors consisting of disjoint parts and for providing some help with addressing rendering anomalies

source/core/maploader.cpp

@@ -44,6 +44,7 @@
 #include "gamefuncs.h"
 #include "sectorgeometry.h"
 #include "render.h"
+#include "hw_sections.h"
 
 static void ReadSectorV7(FileReader& fr, sectortype& sect)
 {
@@ -451,6 +452,7 @@ void engineLoadBoard(const char* filename, int flags, vec3_t* pos, int16_t* ang,
 	md4once(buffer.Data(), buffer.Size(), md4);
 	G_LoadMapHack(filename, md4);
 	setWallSectors();
+	hw_BuildSections();
 
 	memcpy(wallbackup, wall, sizeof(wallbackup));
 	memcpy(sectorbackup, sector, sizeof(sectorbackup));