The GtkRadiant sources as originally released under the GPL license.

2026-03-20 08:59:32 +01:00 · 2012-01-31 15:20:35 -06:00
commit 0991a5ce8b
1590 changed files with 431941 additions and 0 deletions
--- a/tools/quake3/q3map2/light_shadows.c
+++ b/tools/quake3/q3map2/light_shadows.c
@@ -0,0 +1,124 @@
+/*
+Copyright (C) 1999-2006 Id Software, Inc. and contributors.
+For a list of contributors, see the accompanying CONTRIBUTORS file.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#define LIGHT_SHADOWS_C
+
+#include "light.h"
+#include "inout.h"
+
+
+
+/* -------------------------------------------------------------------------------
+
+ydnar: this code deals with shadow volume bsps
+
+------------------------------------------------------------------------------- */
+
+typedef struct shadowNode_s
+{
+	vec4_t	plane;
+	int		children[ 2 ];
+}
+shadowNode_t;
+
+int				numShadowNodes;
+shadowNode_t	*shadowNodes;
+
+
+
+/*
+AddShadow()
+adds a shadow, returning the index into the shadow list
+*/
+
+
+
+/*
+MakeShadowFromPoints()
+creates a shadow volume from 4 points (the first being the light origin)
+*/
+
+
+
+/*
+SetupShadows()
+sets up the shadow volumes for all lights in the world
+*/
+
+void SetupShadows( void )
+{
+	int				i, j, s;
+	light_t			*light;
+	dleaf_t			*leaf;
+	dsurface_t		*ds;
+	surfaceInfo_t	*info;
+	shaderInfo_t	*si;
+	byte			*tested;
+
+	
+	/* early out for weird cases where there are no lights */
+	if( lights == NULL )
+		return;
+	
+	/* note it */
+	Sys_FPrintf( SYS_VRB, "--- SetupShadows ---\n" );
+	
+	/* allocate a surface test list */
+	tested = safe_malloc( numDrawSurfaces / 8 + 1 );
+	
+	/* walk the list of lights */
+	for( light = lights; light != NULL; light = light->next )
+	{
+		/* do some early out testing */
+		if( light->cluster < 0 )
+			continue;
+		
+		/* clear surfacetest list */
+		memset( tested, 0, numDrawSurfaces / 8 + 1 );
+		
+		/* walk the bsp leaves */
+		for( i = 0, leaf = dleafs; i < numleafs; i++, leaf++ )
+		{
+			/* in pvs? */
+			if( ClusterVisible( light->cluster, leaf->cluster ) == qfalse )
+				continue;
+			
+			/* walk the surface list for this leaf */
+			for( j = 0; j < leaf->numLeafSurfaces; j++ )
+			{
+				/* don't filter a surface more than once */
+				s = dleafsurfaces[ leaf->firstLeafSurface + j ];
+				if( tested[ s >> 3 ] & (1 << (s & 7)) )
+					continue;
+				tested[ s >> 3 ] |= (1 << (s & 7));
+				
+				/* get surface and info */
+				ds = &drawSurfaces[ s ];
+				info = &surfaceInfos[ s ];
+				si = info->si;
+				
+				/* don't create shadow volumes from translucent surfaces */
+				if( si->contents & CONTENTS_TRANSLUCENT )
+					continue;
+			}
+		}
+	}
+}