1 files changed, 96 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/blurLightF.glsl
new file mode 100644
index 0000000000..8bd702a8da
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/deferred/blurLightF.glsl
@@ -0,0 +1,96 @@
+/** 
+ * @file blurLightF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect depthMap;
+uniform sampler2DRect normalMap;
+uniform sampler2DRect lightMap;
+uniform sampler2DRect edgeMap;
+
+uniform float dist_factor;
+uniform float blur_size;
+uniform vec2 delta;
+uniform vec3 kern[4];
+uniform float kern_scale;
+
+varying vec2 vary_fragcoord;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+vec4 getPosition(vec2 pos_screen)
+{
+	float depth = texture2DRect(depthMap, pos_screen.xy).a;
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+void main() 
+{
+	vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz*2.0-1.0;
+	vec3 pos = getPosition(vary_fragcoord.xy).xyz;
+	vec4 ccol = texture2DRect(lightMap, vary_fragcoord.xy).rgba;
+	
+	vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
+	
+	dlt /= max(-pos.z*dist_factor, 1.0);
+	
+	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'
+	vec4 col = defined_weight.xyxx * ccol;
+	
+	float e = 1.0;
+	for (int i = 0; i < 4; i++)
+	{
+		vec2 tc = vary_fragcoord.xy + kern[i].z*dlt;
+		
+		e = max(e, 0.0);
+		
+		vec2 wght = kern[i].xy*e;
+		
+		col += texture2DRect(lightMap, tc)*wght.xyxx;
+		defined_weight += wght;
+		
+		e *= e;
+		e -= texture2DRect(edgeMap, tc.xy).a+
+			texture2DRect(edgeMap, tc.xy+dlt*0.333).a+
+			texture2DRect(edgeMap, tc.xy-dlt*0.333).a;
+	}
+
+
+	e = 1.0;
+	
+	for (int i = 0; i < 4; i++)
+	{
+		vec2 tc = vary_fragcoord.xy - kern[i].z*dlt;
+		
+		e = max(e, 0.0);
+		
+		vec2 wght = kern[i].xy*e;
+		
+		col += texture2DRect(lightMap, tc)*wght.xyxx;
+		defined_weight += wght;
+		
+		e *= e;
+		e -= texture2DRect(edgeMap, tc.xy).a+
+			texture2DRect(edgeMap, tc.xy+dlt*0.333).a+
+			texture2DRect(edgeMap, tc.xy-dlt*0.333).a;
+	}
+
+
+	col /= defined_weight.xyxx;
+	
+	gl_FragColor = col;
+	
+	//gl_FragColor = ccol;
+}