1.2 update w/ GZDoom 4.9 features:

- Changeable player skins.
 - Ammo LEDs are now 1:1 with UT by using canvas textures.
 - Integrate some add-ons, including reskins.
 - Various fixes (some backported from Demolitionist).
 - Migrated from libeye to Gutamatics.

shaders/glsl/AmbientGlow.fp

@@ -1,11 +1,26 @@
 // imitation of the Unreal Engine 1.x ambient glow effect
 vec4 ProcessLight( vec4 color )
 {
+	vec2 gs = texture(ambglow,vec2(.5)).xy;
+	if ( gs.x > .5 ) return color;
+	if ( gs.y > .5 )
+	{
+		float glow = max(0.,sin(timer*4)-.5);
+		return vec4(min(color.rgb+vec3(glow),1.),color.a);
+	}
 	float glow = 0.25+0.2*sin(timer*8);
 	return vec4(min(color.rgb+vec3(glow),1.0),color.a);
 }
 
 vec4 ProcessTexel()
 {
+	vec2 gs = texture(ambglow,vec2(.5)).xy;
+	if ( gs.x > .5 ) getTexel(vTexCoord.st);
+	if ( gs.y > .5 )
+	{
+		float glow = max(0.,sin(timer*4)-.5);
+		vec4 col = getTexel(vTexCoord.st);
+		return vec4(min(col.rgb+vec3(glow),1.),col.a);
+	}
 	return getTexel(vTexCoord.st);
 }