1 files changed, 7 insertions, 1 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
index a887728493..595c11fae2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
@@ -39,6 +39,12 @@ VARYING vec3 vary_mat2;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 
+vec2 encode_normal(vec3 n)
+{
+	float f = sqrt(8 * n.z + 8);
+	return n.xy / f + 0.5;
+}
+
 void main() 
 {
 	vec3 col = vertex_color.rgb * texture2D(diffuseMap, vary_texcoord0.xy).rgb;
@@ -52,5 +58,5 @@ void main()
 	frag_data[1] = vertex_color.aaaa; // spec
 	//frag_data[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
 	vec3 nvn = normalize(tnorm);
-	frag_data[2] = vec4(nvn.xyz * 0.5 + 0.5, vertex_color.a);
+	frag_data[2] = vec4(encode_normal(nvn.xyz), vertex_color.a, 0.0);
 }