#1139 Fix for world going black/white in some scenes (NaNs) (#1273)

* #1139 Fix for world going black/white in some scenes (NaNs)

NaNs were coming from normal encode/decode.  Take advantage of available gbuffer space to send full normal instead of encoding.

* #1139 Cleanup

remove now unused encodeNormF.glsl

* #1139 Remove final reference to encodeNormF

* #1139 Fix for getNormalEnvIntensityFlags referencing wrong sampler for env intensity

* Mac build fix

1 files changed, 3 insertions, 3 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
index c0607d0149..db7597dd74 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
@@ -25,7 +25,7 @@
 
 /*[EXTRA_CODE_HERE]*/
 
-out vec4 frag_data[3];
+out vec4 frag_data[4];
 
 uniform sampler2D diffuseMap;
 
@@ -35,7 +35,6 @@ in vec3 vary_normal;
 in vec2 vary_texcoord0;
 in vec3 vary_position;
 
-vec2 encode_normal(vec3 n);
 void mirrorClip(vec3 pos);
 
 void main() 
@@ -52,6 +51,7 @@ void main()
 	frag_data[0] = vec4(diff.rgb, 0.0);
 	frag_data[1] = vec4(0,0,0,0);
 	vec3 nvn = normalize(vary_normal);
-	frag_data[2] = vec4(encode_normal(nvn.xyz), 0.0, GBUFFER_FLAG_HAS_ATMOS);
+	frag_data[2] = vec4(nvn.xyz, GBUFFER_FLAG_HAS_ATMOS);
+    frag_data[3] = vec4(0);
 }