From: jal <germangar@gmail.com>
Date: Thu, 22 Apr 2010 10:07:00 +0000 (+0200)
Subject: fix deluxemapping when using floodlight. Also, add to floodlight the same trick as... 
X-Git-Tag: xonotic-v0.5.0~262^2~1
X-Git-Url: https://de.git.xonotic.org/?p=xonotic%2Fnetradiant.git;a=commitdiff_plain;h=36e9024e86ff2fbc3b7ab0512df42ce038cf1e3c

fix deluxemapping when using floodlight. Also, add to floodlight the same trick as it's done to ambient to have a minimum normal assigned.
---

diff --git a/tools/quake3/q3map2/light_ydnar.c b/tools/quake3/q3map2/light_ydnar.c
index 3207928b..dac94b62 100644
--- a/tools/quake3/q3map2/light_ydnar.c
+++ b/tools/quake3/q3map2/light_ydnar.c
@@ -3888,7 +3888,7 @@ float FloodLightForSample( trace_t *trace , float floodLightDistance, qboolean f
 	VectorCopy( trace->normal, normal );
 	
 	/* check if the normal is aligned to the world-up */
-	if( normal[ 0 ] == 0.0f && normal[ 1 ] == 0.0f )
+	if( normal[ 0 ] == 0.0f && normal[ 1 ] == 0.0f && ( normal[ 2 ] == 1.0f || normal[ 2 ] == -1.0f ) )
 	{
 		if( normal[ 2 ] == 1.0f )		
 		{
@@ -4123,7 +4123,7 @@ void FloodLightRawLightmap( int rawLightmapNum )
 
 	/* global pass */
 	if (floodlighty && floodlightIntensity)
-		FloodLightRawLightmapPass(lm, floodlightRGB, floodlightIntensity, floodlightDistance, floodlight_lowquality, 0);
+		FloodLightRawLightmapPass(lm, floodlightRGB, floodlightIntensity, floodlightDistance, floodlight_lowquality, 1.0f);
 
 	/* custom pass */
 	if (lm->floodlightIntensity)
@@ -4151,7 +4151,6 @@ void FloodlightIlluminateLightmap( rawLightmap_t *lm )
 	float				*luxel, *floodlight, *deluxel, *normal;
 	int					*cluster;
 	float				brightness;
-	vec3_t				lightvector;
 	int					x, y, lightmapNum;
 
 	/* walk lightmaps */
@@ -4190,11 +4189,18 @@ void FloodlightIlluminateLightmap( rawLightmap_t *lm )
 				if (luxel[3]==0) luxel[3]=1;
 
 				/* add to deluxemap */
-				if (deluxemap && floodlight[3] > 0)
+				if (deluxemap && floodlight[3] > 0)
 				{
+					vec3_t				lightvector;
+
 					normal = SUPER_NORMAL( x, y );
 					brightness = floodlight[ 0 ] * 0.3f + floodlight[ 1 ] * 0.59f + floodlight[ 2 ] * 0.11f;
-					brightness *= ( 1.0f / 255.0f ) * floodlight[3];
+					brightness *= ( 1.0f / 255.0f ) * floodlight[3];
+
+					// use AT LEAST this amount of contribution from ambient for the deluxemap, fixes points that receive ZERO light
+					if(brightness < 0.00390625f)
+						brightness = 0.00390625f;
+
 					VectorScale( normal, brightness, lightvector );
 					VectorAdd( deluxel, lightvector, deluxel );
 				}