From 9f8d3f0a00b04b768dea4e58a3dbb616087d7103 Mon Sep 17 00:00:00 2001
From: divverent <divverent@61c419a2-8eb2-4b30-bcec-8cead039b335>
Date: Mon, 27 Apr 2009 17:20:32 +0000
Subject: [PATCH] minimap: -boost = contrast boost (like in darkplaces)

git-svn-id: svn://svn.icculus.org/netradiant/trunk@348 61c419a2-8eb2-4b30-bcec-8cead039b335
---
 tools/quake3/q3map2/main.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tools/quake3/q3map2/main.c b/tools/quake3/q3map2/main.c
index a4e446d6..41e76030 100644
--- a/tools/quake3/q3map2/main.c
+++ b/tools/quake3/q3map2/main.c
@@ -103,6 +103,7 @@ typedef struct minimap_s
 	float *sample_offsets;
 	float sharpen_boxmult;
 	float sharpen_centermult;
+	float boost;
 	float *data1f;
 	float *sharpendata1f;
 	vec3_t mins, size;
@@ -319,6 +320,17 @@ static void MiniMapSharpen(int y)
 	}
 }
 
+static void MiniMapContrastBoost(int y)
+{
+	int x;
+	float *q = &minimap.data1f[y * minimap.width];
+	for(x = 0; x < minimap.width; ++x)
+	{
+		*q = *q * minimap.boost / ((minimap.boost - 1) * *q + 1);
+		++q;
+	}
+}
+
 void MiniMapMakeMinsMaxs(vec3_t mins_in, vec3_t maxs_in, float border, qboolean keepaspect)
 {
 	vec3_t mins, maxs, extend;
@@ -595,6 +607,7 @@ int MiniMapBSPMain( int argc, char **argv )
 
 	minimap.samples = 1;
 	minimap.sample_offsets = NULL;
+	minimap.boost = 1.0;
 
 	/* process arguments */
 	for( i = 1; i < (argc - 1); i++ )
@@ -678,6 +691,12 @@ int MiniMapBSPMain( int argc, char **argv )
 			mode = MINIMAP_MODE_WHITE;
 			Sys_Printf( "Writing as white alpha image\n" );
  		}
+		else if( !strcmp( argv[ i ],  "-boost" ) )
+ 		{
+			minimap.boost = atof(argv[i + 1]);
+			i++;
+			Sys_Printf( "Contrast boost set to %f\n", minimap.boost );
+ 		}
 	}
 
 	MiniMapMakeMinsMaxs(mins, maxs, border, keepaspect);
@@ -725,6 +744,12 @@ int MiniMapBSPMain( int argc, char **argv )
 		}
 	}
 
+	if(minimap.boost != 1.0)
+	{
+		Sys_Printf( "\n--- MiniMapContrastBoost (%d) ---\n", minimap.height );
+		RunThreadsOnIndividual(minimap.height, qtrue, MiniMapContrastBoost);
+	}
+
 	if(minimap.sharpendata1f)
 	{
 		Sys_Printf( "\n--- MiniMapSharpen (%d) ---\n", minimap.height );