1 files changed, 48 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
new file mode 100644
index 0000000000..3c6700a871
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
@@ -0,0 +1,48 @@
+/** 
+ * @file blurLightF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect positionMap;
+uniform sampler2DRect normalMap;
+uniform sampler2DRect lightMap;
+
+uniform float blur_size;
+uniform vec2 delta;
+uniform vec3 kern[32];
+uniform int kern_length;
+uniform float kern_scale;
+
+varying vec2 vary_fragcoord;
+
+void main() 
+{
+	vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz;
+	vec3 pos = texture2DRect(positionMap, vary_fragcoord.xy).xyz;
+	vec2 ccol = texture2DRect(lightMap, vary_fragcoord.xy).rg;
+	
+	vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
+	
+	vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free'
+	vec2 col = defined_weight * ccol;
+	
+	for (int i = 1; i < kern_length; i++)
+	{
+		vec2 tc = vary_fragcoord.xy + kern[i].z*dlt;
+	        vec3 samppos = texture2DRect(positionMap, tc).xyz;
+		float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
+		if (d*d <= 0.003)
+		{
+			col += texture2DRect(lightMap, tc).rg*kern[i].xy;
+			defined_weight += kern[i].xy;
+		}
+	}
+
+	col /= defined_weight;
+
+	gl_FragColor = vec4(col.r, col.g, 0.0, 1.0);
+}