client: render: added parent entities feature for dynamic lights

Also, added flag for disabling shadows for entities that marked as parent for current dynamic light.

client/render/cl_dlight.h

@@ -25,13 +25,14 @@ GNU General Public License for more details.
 #define MAX_SHADOWMAPS	(NUM_SHADOW_SPLITS + 1)
 
 // dlight flags
-#define DLF_NOSHADOWS	BIT( 0 )
-#define DLF_NOBUMP		BIT( 1 )
-#define DLF_LENSFLARE	BIT( 2 )
-#define DLF_CULLED		BIT( 3 )		// light culled by scissor
-#define DLF_ASPECT3X4	BIT( 4 )
-#define DLF_ASPECT4X3	BIT( 5 )
-#define DLF_FLIPTEXTURE	BIT( 6 )
+#define DLF_NOSHADOWS				BIT( 0 )
+#define DLF_NOBUMP					BIT( 1 )
+#define DLF_LENSFLARE				BIT( 2 )
+#define DLF_CULLED					BIT( 3 )		// light culled by scissor
+#define DLF_ASPECT3X4				BIT( 4 )
+#define DLF_ASPECT4X3				BIT( 5 )
+#define DLF_FLIPTEXTURE				BIT( 6 )
+#define DLF_PARENTENTITY_NOSHADOW	BIT( 7 )
 
 class CDynLight
 {
@@ -46,6 +47,7 @@ class CDynLight
 	int			type;				// light type
 	int			lightstyleIndex;
 	bool		update;				// light needs update
+	cl_entity_t *parentEntity;
 
 	matrix4x4		viewMatrix;
 	matrix4x4		projectionMatrix;			// light projection matrix

client/render/gl_shadows.cpp

@@ -376,7 +376,7 @@ static void R_ShadowPassSetupViewCache( CDynLight *pl, int split = 0 )
 		RI->currentmodel = RI->currententity->model;
 
 		// skip entities with disabled shadow casting
-		if (RI->currententity->curstate.effects & EF_NOSHADOW)
+		if (FBitSet(RI->currententity->curstate.effects, EF_NOSHADOW))
 			continue;
 
 		// disable rendering shadows for local player
@@ -386,6 +386,13 @@ static void R_ShadowPassSetupViewCache( CDynLight *pl, int split = 0 )
 				continue;
 		}
 
+		// skip entities that marked as parent for dynlight and according flag set
+		if (FBitSet(pl->flags, DLF_PARENTENTITY_NOSHADOW) && pl->parentEntity)
+		{
+			if (RI->currententity->index == pl->parentEntity->index)
+				continue;
+		}
+
 		switch( RI->currentmodel->type )
 		{
 		case mod_studio: