Merge

18 files changed, 253 insertions, 177 deletions

diff --git a/indra/llinventory/llsettingsbase.cpp b/indra/llinventory/llsettingsbase.cpp
index 4b8be04355..7917fa96f1 100644
--- a/indra/llinventory/llsettingsbase.cpp
+++ b/indra/llinventory/llsettingsbase.cpp
@@ -688,6 +688,7 @@ F64 LLSettingsBlender::setBlendFactor(const LLSettingsBase::BlendFactor& blendf_
             return blendf;
         }
         mTarget->blend(mFinal, blendf);
+        mTarget->update();
     }
     else
     {
@@ -702,6 +703,7 @@ void LLSettingsBlender::triggerComplete()
     if (mTarget)
         mTarget->replaceSettings(mFinal->getSettings());
     LLSettingsBlender::ptr_t hold = shared_from_this();   // prevents this from deleting too soon
+    mTarget->update();
     mOnFinished(shared_from_this());
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index 7f2c5add16..1cfc19267c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -88,7 +88,7 @@ vec3 linear_to_srgb(vec3 cl);
 vec2 encode_normal (vec3 n);
 vec3 decode_normal (vec2 enc);
 
-vec3 scaleFragSoftClip(vec3 l);
+vec3 scaleSoftClipFrag(vec3 l);
 vec3 atmosFragAmbient(vec3 light, vec3 sunlit);
 vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten);
 vec3 atmosFragAffectDirectionalLight(float light, vec3 sunlit);
@@ -312,7 +312,7 @@ void main()
 	//color.rgb = mix(diff.rgb, color.rgb, final_alpha);
 	
 	color.rgb = atmosFragLighting(color.rgb, additive, atten);
-	color.rgb = scaleFragSoftClip(color.rgb);
+	color.rgb = scaleSoftClipFrag(color.rgb);
 
 	vec4 light = vec4(0,0,0,0);
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 6e06453a5b..c001ff9ac8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -42,8 +42,8 @@ vec3 linear_to_srgb(vec3 cl);
 
 vec3 atmosFragAmbient(vec3 l, vec3 ambient);
 vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
-vec3 scaleFragSoftClip(vec3 l);
-vec3 atmosFragAffectDirectionalLight(float intensity, vec3 sunlit);
+vec3 scaleSoftClipFrag(vec3 l);
+
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
@@ -406,7 +406,7 @@ void main()
 
 	col.rgb *= ambient;
 
-	col.rgb = col.rgb + atmosFragAffectDirectionalLight(final_da, sunlit);
+	col.rgb = col.rgb + (final_da * sunlit);
 
 	col.rgb *= gamma_diff.rgb;
 	
@@ -455,7 +455,7 @@ void main()
 	//col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col),  diffuse.a);
 
 	col = atmosFragLighting(col, additive, atten);
-	col = scaleFragSoftClip(col);
+	col = scaleSoftClipFrag(col);
 
 	//convert to linear space before adding local lights
 	col = srgb_to_linear(col);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index c3827e3a56..5627275df6 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -69,13 +69,7 @@ vec3 srgb_to_linear(vec3 cs);
 vec3 linear_to_srgb(vec3 cl);
 vec3 decode_normal (vec2 enc);
 
-vec3 atmosFragAmbient(vec3 l, vec3 ambient);
 vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
-vec3 scaleFragSoftClip(vec3 l);
-vec3 atmosFragAffectDirectionalLight(float intensity, vec3 sunlit);
-vec3 fullbrightFragAtmosTransport(vec3 l, vec3 additive, vec3 atten);
-vec3 fullbrightScaleSoftClipFrag(vec3 l, vec3 atten);
-
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
 
 vec4 getPosition_d(vec2 pos_screen, float depth)
@@ -123,22 +117,20 @@ void main()
 	vec3 col;
 	float bloom = 0.0;
 	{
-                vec3 sunlit;
-                vec3 amblit;
-                vec3 additive;
-                vec3 atten;
+        vec3 sunlit;
+        vec3 amblit;
+        vec3 additive;
+        vec3 atten;
 		calcFragAtmospherics(pos.xyz, 1.0, sunlit, amblit, additive, atten);
 	
-		col = atmosFragAmbient(vec3(0), amblit);
 		float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
 		ambient *= 0.5;
 		ambient *= ambient;
-		ambient = (1.0-ambient);
-
-		col.rgb *= ambient;
+		ambient = (1.0 - ambient);
 
-		col += atmosFragAffectDirectionalLight(final_da, sunlit);
-	
+		col = amblit;
+		col += (final_da * sunlit);
+        col *= ambient;
 		col *= diffuse.rgb;
 	
 		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
@@ -174,9 +166,7 @@ void main()
 				
 		if (norm.w < 0.5)
 		{
-            vec3 add = additive;
-			col = mix(atmosFragLighting(col, add, atten), fullbrightFragAtmosTransport(col, atten, add), diffuse.a);
-			col = mix(scaleFragSoftClip(col), fullbrightScaleSoftClipFrag(col, atten), diffuse.a);
+			col = atmosFragLighting(col, additive, atten);
 		}
 
 		#ifdef WATER_FOG
@@ -187,7 +177,6 @@ void main()
 
 		col = srgb_to_linear(col);
 
-		//col = vec3(1,0,1);
 		//col.g = envIntensity;
 	}
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl
index 587f3d5a94..00ba0e8fad 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl
@@ -23,6 +23,24 @@
  * $/LicenseInfo$
  */
 
+vec3 rgb2hsv(vec3 c)
+{
+    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+    float d = q.x - min(q.w, q.y);
+    float e = 1.0e-10;
+    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
+}
+
+vec3 hsv2rgb(vec3 c)
+{
+    vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+    vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+    return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+}
+
 vec3 srgb_to_linear(vec3 cs)
 {
 	vec3 low_range = cs / vec3(12.92);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
index a29acb3e7d..73f6d9fec3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
@@ -73,6 +73,7 @@ VARYING vec4 vary_position;
 
 vec3 srgb_to_linear(vec3 cs);
 vec2 encode_normal(vec3 n);
+vec3 scaleSoftClipFrag(vec3 l);
 
 vec3 BlendNormal(vec3 bump1, vec3 bump2)
 {
@@ -175,7 +176,7 @@ void main()
 	color.rgb += spec * specular;
 	
 	color.rgb = atmosTransport(color.rgb);
-	color.rgb = scaleSoftClip(color.rgb);
+	color.rgb = scaleSoftClipFrag(color.rgb);
 	color.a   = spec * sunAngle2;
 
 	vec3 screenspacewavef = normalize((norm_mat*vec4(wavef, 1.0)).xyz);
diff --git a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
index 835662732a..f98b3a5edf 100644
--- a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
@@ -60,3 +60,7 @@ vec3 linear_to_srgb(vec3 cl)
 
 }
 
+vec3 ColorFromRadiance(vec3 radiance)
+{
+    return vec3(1.0) - exp(-radiance * 0.0001);
+}
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
index 668a710c04..46bde7f308 100644
--- a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
@@ -59,8 +59,10 @@ void main()
 	vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
 	
 	/// Add WL Components
-	outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
+	//outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
 	
+	outColor.rgb = atmosLighting(outColor.rgb);
+
 	frag_color = vec4(scaleSoftClip(outColor.rgb), 1.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl
index d09c5f9247..5ffe464172 100644
--- a/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/terrainV.glsl
@@ -71,7 +71,7 @@ void main()
 	/// Potentially better without it for water.
 	pos /= pos.w;
 
-	vec4 color = calcLighting(pos.xyz, norm, vec4(1,1,1,1), vec4(0));
+	vec4 color = calcLighting(pos.xyz, norm, vec4(0), vec4(1));
 	
 	vertex_color = color;
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/gammaF.glsl b/indra/newview/app_settings/shaders/class1/windlight/gammaF.glsl
index b7f117fc5f..768d93f005 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/gammaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/gammaF.glsl
@@ -26,7 +26,7 @@
 uniform int no_atmo;
 uniform vec4 gamma;
 
-vec3 scaleFragSoftClip(vec3 light)
+vec3 scaleSoftClipFrag(vec3 light)
 {
 	// For compatibility with lower cards. Do nothing.
 	return light;
@@ -35,16 +35,19 @@ vec3 scaleFragSoftClip(vec3 light)
 /// Soft clips the light with a gamma correction
 vec3 scaleSoftClip(vec3 light)
 {
-	// For compatibility with lower cards. Do nothing.
-	return scaleFragSoftClip(light);
+	// For compatibility with lower cards. Do nothing
+	return light;
 }
 
-vec3 fullbrightScaleSoftClipFrag(vec3 light, vec3 atten)
+vec3 fullbrightScaleSoftClipFrag(vec3 light)
 {
-	return (no_atmo == 1) ? light : mix(scaleFragSoftClip(light.rgb), light.rgb, atten);
+	// For compatibility with lower cards. Do nothing
+	return light;
 }
 
-vec3 fullbrightScaleSoftClip(vec3 light) {
-    return fullbrightScaleSoftClipFrag(light, vec3(1));
+vec3 fullbrightScaleSoftClip(vec3 light)
+{
+	// For compatibility with lower cards. Do nothing
+    return light;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/transportF.glsl b/indra/newview/app_settings/shaders/class1/windlight/transportF.glsl
index c3c8329017..ebce9ea91d 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/transportF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/transportF.glsl
@@ -25,37 +25,19 @@
 
 uniform int no_atmo;
 
-vec3 atmosFragTransport(vec3 light, vec3 atten, vec3 additive)
-{
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
-}
-
-vec3 fullbrightFragAtmosTransport(vec3 light, vec3 atten, vec3 additive)
-{
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
-}
-
-vec3 fullbrightFragShinyAtmosTransport(vec3 light, vec3 atten, vec3 additive)
-{
-	/* stub function for fallback compatibility on class1 hardware */
-    return light;
-}
-
 vec3 atmosTransport(vec3 light)
 {
 	/* stub function for fallback compatibility on class1 hardware */
-    return atmosFragTransport(light, vec3(1), vec3(0));
+    return light;
 }
 
 vec3 fullbrightAtmosTransport(vec3 light)
 {
-     return fullbrightFragAtmosTransport(light, vec3(1), vec3(0));
+    return light;
 }
 
 vec3 fullbrightShinyAtmosTransport(vec3 light)
 {
-    return fullbrightFragShinyAtmosTransport(light, vec3(1), vec3(0));
+    return light;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index af199fd78c..fa81317f3f 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -1,5 +1,5 @@
 /** 
- * @file softenLightF.glsl
+ * @file class2/deferred/softenLightF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -72,17 +72,43 @@ VARYING vec2 vary_fragcoord;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
+uniform int no_atmo;
+
 vec3 srgb_to_linear(vec3 cs);
 vec3 linear_to_srgb(vec3 cl);
 vec3 decode_normal (vec2 enc);
 
-vec3 atmosFragAmbient(vec3 l, vec3 ambient);
-vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
-vec3 scaleFragSoftClip(vec3 l);
-vec3 atmosFragAffectDirectionalLight(float intensity, vec3 sunlit);
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten);
-vec3 fullbrightFragAtmosTransport(vec3 l, vec3 additive, vec3 atten);
-vec3 fullbrightScaleSoftClipFrag(vec3 l, vec3 atten);
+vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten);
+vec3 fullbrightScaleSoftClipFrag(vec3 l);
+vec3 scaleSoftClipFrag(vec3 l);
+
+vec3 atmosTransportFrag(vec3 light, vec3 additive, vec3 atten) {
+    if (no_atmo == 0)
+    {
+	    light *= atten.r;
+	    light += additive * 2.0;
+    }
+	return light;
+}
+
+vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten) {
+    if (no_atmo == 1)
+    {
+        return light;
+    }
+	float brightness = dot(light.rgb, vec3(0.33333));
+	return mix(atmosTransportFrag(light.rgb, additive, atten), light.rgb + additive.rgb, brightness * brightness);
+}
+
+vec3 fullbrightShinyAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten) {
+    if (no_atmo == 1)
+    {
+        return light;
+    }
+	float brightness = dot(light.rgb, vec3(0.33333));
+	return mix(atmosTransportFrag(light.rgb, additive, atten), (light.rgb + additive.rgb) * (2.0 - brightness), brightness * brightness);
+}
 
 vec4 getPosition_d(vec2 pos_screen, float depth)
 {
@@ -121,7 +147,6 @@ void main()
 	float light_gamma = 1.0/1.3;
 	da = pow(da, light_gamma);
 
-
 	vec4 diffuse = texture2DRect(diffuseRect, tc);
 
 	//convert to gamma space
@@ -136,27 +161,23 @@ void main()
 		scol_ambocc = pow(scol_ambocc, vec2(light_gamma));
 
 		float scol = max(scol_ambocc.r, diffuse.a); 
-
-		
-
 		float ambocc = scol_ambocc.g;
 
-                vec3 sunlit;
-                vec3 amblit;
-                vec3 additive;
-                vec3 atten;
+        vec3 sunlit;
+        vec3 amblit;
+        vec3 additive;
+        vec3 atten;
 	
 		calcFragAtmospherics(pos.xyz, ambocc, sunlit, amblit, additive, atten);
-	
-		col = atmosFragAmbient(vec3(0), amblit);
+
 		float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
 		ambient *= 0.5;
 		ambient *= ambient;
 		ambient = (1.0-ambient);
 
-		col.rgb *= ambient;
+		col.rgb = ambient * amblit;
 
-		col += atmosFragAffectDirectionalLight(max(min(da, scol), 0.0), sunlit);
+		col += sunlit * max(min(da, scol), 0.0);
 	
 		col *= diffuse.rgb;
 	
@@ -173,7 +194,6 @@ void main()
 			bloom = dot(spec_contrib, spec_contrib) / 6;
 			col += spec_contrib;
 		}
-	
 		
 		col = mix(col, diffuse.rgb, diffuse.a);
 
@@ -186,13 +206,12 @@ void main()
 						
 		if (norm.w < 0.5)
 		{
-            vec3 add = additive;
-			col = mix(atmosFragLighting(col, add, atten), fullbrightFragAtmosTransport(col, atten, add), diffuse.a);
-			col = mix(scaleFragSoftClip(col), fullbrightScaleSoftClipFrag(col, atten), diffuse.a);
+			col = mix(atmosFragLighting(col, additive, atten), fullbrightAtmosTransportFrag(col, additive, atten), diffuse.a);
+			col = mix(scaleSoftClipFrag(col), fullbrightScaleSoftClipFrag(col), diffuse.a);
 		}
 
 		#ifdef WATER_FOG
-			vec4 fogged = applyWaterFogView(pos,vec4(col, bloom));
+			vec4 fogged = applyWaterFogView(pos.xyz,vec4(col, bloom));
 			col = fogged.rgb;
 			bloom = fogged.a;
 		#endif
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
index 20c4d82ded..89bdbfc0e6 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
@@ -43,17 +43,7 @@ uniform float scene_light_strength;
 uniform mat3 ssao_effect_mat;
 uniform int no_atmo;
 
-vec3 scaleFragSoftClip(vec3 light)
-{
-    if (no_atmo == 1)
-    {
-        return light;
-    }
-	//soft clip effect:
-	light = 1. - clamp(light, vec3(0.), vec3(1.));
-	light = 1. - pow(light, gamma.xxx);
-	return light;
-}
+vec3 scaleSoftClipFrag(vec3 light);
 
 vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten)
 {
diff --git a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
index f2764b72c3..187876acf7 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
@@ -30,8 +30,8 @@ uniform int no_atmo;
 
 vec3 getAtmosAttenuation();
 
-/// Soft clips the light with a gamma correction
-vec3 scaleSoftClip(vec3 light) {
+vec3 scaleSoftClipFrag(vec3 light)
+{
     if (no_atmo == 1)
     {
         return light;
@@ -39,16 +39,21 @@ vec3 scaleSoftClip(vec3 light) {
 	//soft clip effect:
 	light = 1. - clamp(light, vec3(0.), vec3(1.));
 	light = 1. - pow(light, gamma.xxx);
-
 	return light;
 }
 
-vec3 fullbrightScaleSoftClipFrag(vec3 light, vec3 atten)
+vec3 scaleSoftClip(vec3 light)
+{
+    return scaleSoftClipFrag(light);
+}
+
+vec3 fullbrightScaleSoftClipFrag(vec3 light)
 {
-	return (no_atmo == 1) ? light : mix(scaleSoftClip(light.rgb), light.rgb, atten);
+	return scaleSoftClipFrag(light.rgb);
 }
 
-vec3 fullbrightScaleSoftClip(vec3 light) {
-	return (no_atmo == 1) ? light : fullbrightScaleSoftClipFrag(light.rgb, getAtmosAttenuation());
+vec3 fullbrightScaleSoftClip(vec3 light)
+{
+	return fullbrightScaleSoftClipFrag(light.rgb);
 }
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index d2fd70c9e2..2615400e52 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -115,7 +115,6 @@ void main()
 	float light_gamma = 1.0/1.3;
 	da = pow(da, light_gamma);
 
-
 	vec4 diffuse = texture2DRect(diffuseRect, tc);
 
 	//convert to gamma space
@@ -133,14 +132,6 @@ void main()
 
 		float ambocc = scol_ambocc.g;
 
-                vec3 sunlit;
-                vec3 amblit;
-                vec3 additive;
-                vec3 atten;
-	
-		//calcFragAtmospherics(pos.xyz, ambocc, sunlit, amblit, additive, atten);
-		//col += atmosFragAffectDirectionalLight(max(min(da, scol), 0.0), sunlit);
-	
 		col *= diffuse.rgb;
 	
 		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
@@ -158,8 +149,7 @@ void main()
 			bloom = dot(spec_contrib, spec_contrib) / 6;
 			col += spec_contrib;
 		}
-	
-		
+
 		col = mix(col, diffuse.rgb, diffuse.a);
 
 		if (envIntensity > 0.0)
@@ -169,12 +159,6 @@ void main()
 			col = mix(col.rgb, refcol, envintensity);
 		}
 						
-		if (norm.w < 0.5)
-		{
-			//col = mix(atmosFragLighting(col, additive, atten), fullbrightFragAtmosTransport(col, atten, additive), diffuse.a);
-			//col = mix(scaleFragSoftClip(col), fullbrightScaleSoftClipFrag(col, atten), diffuse.a);
-		}
-
 		#ifdef WATER_FOG
 			vec4 fogged = applyWaterFogView(pos,vec4(col, bloom));
 			col = fogged.rgb;
diff --git a/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl
index c809a41a0f..a1b67fc31e 100644
--- a/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl
+++ b/indra/newview/app_settings/shaders/class3/windlight/atmosphericsF.glsl
@@ -42,13 +42,7 @@ uniform vec4 glow;
 uniform float scene_light_strength;
 uniform mat3 ssao_effect_mat;
 
-vec3 scaleFragSoftClip(vec3 light)
-{
-	//soft clip effect:
-	light = 1. - clamp(light, vec3(0.), vec3(1.));
-	light = 1. - pow(light, gamma.xxx);
-	return light;
-}
+vec3 scaleSoftClipFrag(vec3 light);
 
 vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten)
 {
diff --git a/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl b/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl
index c2f4c43101..5c93af386b 100644
--- a/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl
+++ b/indra/newview/app_settings/shaders/class3/windlight/transportF.glsl
@@ -32,41 +32,42 @@ vec3 getAtmosAttenuation();
 
 uniform int no_atmo;
 
-vec3 atmosFragTransport(vec3 light, vec3 atten, vec3 additive) {
-    if (no_atmo == 0)
+vec3 atmosTransportFrag(vec3 light, vec3 additive, vec3 atten) {
+    if (no_atmo == 1)
 	{
-	    light *= atten.r;
-	    light += additive * 2.0;
+        return light;
     }
+	light *= atten.r;
+	light += additive * 2.0;
 	return light;
 }
 
-vec3 fullbrightFragAtmosTransport(vec3 light, vec3 atten, vec3 additive) {
-    if (no_atmo)
+vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten) {
+    if (no_atmo == 1)
     {
 		return light;
 	}
-	loat brightness = dot(light.rgb, vec3(0.33333));
-	return mix(atmosFragTransport(light.rgb, atten, additive), light.rgb + additive.rgb, brightness * brightness);
+	float brightness = dot(light.rgb, vec3(0.33333));
+	return mix(atmosTransportFrag(light.rgb, additive,a tten), light.rgb + additive.rgb, brightness * brightness);
 }
 
-vec3 fullbrightFragShinyAtmosTransport(vec3 light, vec3 atten, vec3 additive) {
-    if (no_atmo)
+vec3 fullbrightShinyAtmosTransportFrag(vec3 light, vec3 atten, vec3 additive) {
+    if (no_atmo == 1)
     {
 		return light;
 	}
 	float brightness = dot(light.rgb, vec3(0.33333));
-	return mix(atmosFragTransport(light.rgb, atten, additive), (light.rgb + additive.rgb) * (2.0 - brightness), brightness * brightness);
+	return mix(atmosTransportFrag(light.rgb, additive, atten), (light.rgb + additive.rgb) * (2.0 - brightness), brightness * brightness);
 }
 
 vec3 atmosTransport(vec3 light) {
-     return no_atmo ? light : atmosFragTransport(light, getAtmosAttenuation(), getAdditiveColor());
+     return (no_atmo == 1) ? light : atmosTransportFrag(light, getAdditiveColor(), getAtmosAttenuation());
 }
 
 vec3 fullbrightAtmosTransport(vec3 light) {
-     return no_atmo ? light : fullbrightFragAtmosTransport(light, getAtmosAttenuation(), getAdditiveColor());
+     return (no_atmo == 1) ? light : fullbrightAtmosTransportFrag(light, GetAdditiveColor(), getAtmosAttenuation());
 }
 
 vec3 fullbrightShinyAtmosTransport(vec3 light) {
-    return no_atmo ? light : fullbrightFragShinyAtmosTransport(light, getAtmosAttenuation(), getAdditiveColor());
+    return (no_atmo == 1) ? light : fullbrightShinyAtmosTransportFrag(light, getAdditiveColor(), getAtmosAttenuation());
 }
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 8a949c6b4e..6418c9900e 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -478,6 +478,12 @@ void LLViewerShaderMgr::setShaders()
 		&& (gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 10)
 		&& gSavedSettings.getBOOL("VertexShaderEnable"))
 	{
+        bool canRenderDeferred       = LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred");
+        bool hasWindLightShaders     = LLFeatureManager::getInstance()->isFeatureAvailable("WindLightUseAtmosShaders");
+        S32 shadow_detail            = gSavedSettings.getS32("RenderShadowDetail");
+        bool useRenderDeferred       = canRenderDeferred && gSavedSettings.getBOOL("RenderDeferred") && gSavedSettings.getBOOL("RenderAvatarVP");
+        bool doingWindLight          = hasWindLightShaders && gSavedSettings.getBOOL("WindLightUseAtmosShaders");
+
 		//using shaders, disable fixed function
 		LLGLSLShader::sNoFixedFunction = true;
 
@@ -485,7 +491,7 @@ void LLViewerShaderMgr::setShaders()
 		S32 env_class = 2;
 		S32 obj_class = 2;
 		S32 effect_class = 2;
-		S32 wl_class = 3;
+		S32 wl_class = 2;
 		S32 water_class = 2;
 		S32 deferred_class = 2;
 		S32 transform_class = gGLManager.mHasTransformFeedback ? 1 : 0;
@@ -495,31 +501,22 @@ void LLViewerShaderMgr::setShaders()
 		{
 			transform_class = 0;
 		}
-		
-		if (LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred") &&
-		    gSavedSettings.getBOOL("RenderDeferred") &&
-			gSavedSettings.getBOOL("RenderAvatarVP") &&
-			gSavedSettings.getBOOL("WindLightUseAtmosShaders"))
+
+		if (useRenderDeferred && doingWindLight)
 		{
-			if (gSavedSettings.getS32("RenderShadowDetail") > 0)
-			{ //shadows
-				deferred_class = 2;
-			}
-			else
-			{ //no shadows
-				deferred_class = 1;
-			}
+			//shadows
+            switch (shadow_detail)
+            {
+                case 0: deferred_class = 1; break; // no shadows
+                case 1: deferred_class = 2; break; // PCF shadows
+                case 2: deferred_class = 2; break; // PCF shadows
+                case 3: deferred_class = 3; break; // VSM shadows
+                default:
+                    break;
+            }
 		}
-
-        // clamp to WL class 2 if we have disabled adv atmo (class 3)
-        if (!gSavedSettings.getBOOL("RenderUseAdvancedAtmospherics"))
-        {
-            wl_class = llmin(wl_class, 2);
-        }
-
-        bool hasWindLightShaders = LLFeatureManager::getInstance()->isFeatureAvailable("WindLightUseAtmosShaders");
-        bool useWindLightShaders = gSavedSettings.getBOOL("WindLightUseAtmosShaders");
-		if (!hasWindLightShaders || !useWindLightShaders)
+        
+		if (!doingWindLight)
 		{
 			// user has disabled WindLight in their settings, downgrade
 			// windlight shaders to stub versions.
@@ -545,6 +542,15 @@ void LLViewerShaderMgr::setShaders()
 		mVertexShaderLevel[SHADER_TRANSFORM] = transform_class;
 
 		BOOL loaded = loadBasicShaders();
+        if (loaded)
+        {
+            LL_INFOS() << "Loaded basic shaders." << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS() << "Failed to load basic shaders." << LL_ENDL;
+            llassert(loaded);
+        }
 
 		if (loaded)
 		{
@@ -553,6 +559,16 @@ void LLViewerShaderMgr::setShaders()
 
 			// Load all shaders to set max levels
 			loaded = loadShadersEnvironment();
+            
+            if (loaded)
+            {
+                LL_INFOS() << "Loaded environment shaders." << LL_ENDL;
+            }
+            else
+            {
+                LL_WARNS() << "Failed to load environment shaders." << LL_ENDL;
+                llassert(loaded);
+            }
 
 			if (loaded)
 			{
@@ -564,6 +580,7 @@ void LLViewerShaderMgr::setShaders()
                 else
                 {
                     LL_WARNS() << "Failed to load water shaders." << LL_ENDL;
+                    llassert(loaded);
                 }
 			}
 
@@ -577,6 +594,7 @@ void LLViewerShaderMgr::setShaders()
                 else
                 {
                     LL_WARNS() << "Failed to load windlight shaders." << LL_ENDL;
+                    llassert(loaded);
                 }
 			}
 
@@ -590,6 +608,7 @@ void LLViewerShaderMgr::setShaders()
                 else
                 {
                     LL_WARNS() << "Failed to load effects shaders." << LL_ENDL;
+                    llassert(loaded);
                 }
 			}
 
@@ -603,6 +622,7 @@ void LLViewerShaderMgr::setShaders()
                 else
                 {
                     LL_WARNS() << "Failed to load interface shaders." << LL_ENDL;
+                    llassert(loaded);
                 }
 			}
 
@@ -617,6 +637,7 @@ void LLViewerShaderMgr::setShaders()
                 else
                 {
                     LL_WARNS() << "Failed to load transform shaders." << LL_ENDL;
+                    llassert(loaded);
                 }
 			}
 
@@ -635,7 +656,9 @@ void LLViewerShaderMgr::setShaders()
 				
 					// Set the actual level
 					mVertexShaderLevel[SHADER_AVATAR] = avatar_class;
-					loadShadersAvatar();
+					loaded = loadShadersAvatar();
+                    llassert(loaded);
+
 					if (mVertexShaderLevel[SHADER_AVATAR] != avatar_class)
 					{
 						if (mVertexShaderLevel[SHADER_AVATAR] == 0)
@@ -668,6 +691,7 @@ void LLViewerShaderMgr::setShaders()
 					loadShadersAvatar(); // unloads
 
 					loaded = loadShadersObject();
+                    llassert(loaded);
 				}
 			}
 
@@ -692,6 +716,8 @@ void LLViewerShaderMgr::setShaders()
 				}
 			}		
 
+            llassert(loaded);
+
 			if (loaded && !loadShadersDeferred())
 			{ //everything else succeeded but deferred failed, disable deferred and try again
 				gSavedSettings.setBOOL("RenderDeferred", FALSE);
@@ -955,10 +981,10 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	std::vector<S32> index_channels;    
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/atmosphericsVarsF.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/atmosphericsVarsWaterF.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );
-    index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/atmosphericsHelpersF.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );
-	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/gammaF.glsl",					mVertexShaderLevel[SHADER_WINDLIGHT]) );
+    index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/atmosphericsHelpersF.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );	
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/atmosphericsF.glsl",			mVertexShaderLevel[SHADER_WINDLIGHT] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/transportF.glsl",				mVertexShaderLevel[SHADER_WINDLIGHT] ) );	
+    index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/gammaF.glsl",					mVertexShaderLevel[SHADER_WINDLIGHT]) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "environment/waterFogF.glsl",				mVertexShaderLevel[SHADER_WATER] ) );
     index_channels.push_back(-1);	 shaders.push_back( make_pair( "environment/encodeNormF.glsl",				    mVertexShaderLevel[SHADER_ENVIRONMENT] ) );
     index_channels.push_back(-1);	 shaders.push_back( make_pair( "environment/decodeNormF.glsl",				    mVertexShaderLevel[SHADER_ENVIRONMENT] ) );
@@ -1025,6 +1051,7 @@ BOOL LLViewerShaderMgr::loadShadersEnvironment()
 		gTerrainProgram.mShaderFiles.push_back(make_pair("environment/terrainF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gTerrainProgram.mShaderLevel = mVertexShaderLevel[SHADER_ENVIRONMENT];
 		success = gTerrainProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (!success)
@@ -1064,6 +1091,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
         gWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
 		gWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_WATER];
 		success = gWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1078,6 +1106,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 		gUnderWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_WATER];        
 		gUnderWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;		
 		success = gUnderWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1096,6 +1125,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 		gTerrainWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_ENVIRONMENT];
 		gTerrainWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
 		terrainWaterSuccess = gTerrainWaterProgram.createShader(NULL, NULL);
+        llassert(terrainWaterSuccess);
 	}	
 
 	/// Keep track of water shader levels
@@ -1249,6 +1279,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredDiffuseProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredDiffuseProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredDiffuseProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1261,6 +1292,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredDiffuseAlphaMaskProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredDiffuseAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1272,6 +1304,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredNonIndexedDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 	
 	if (success)
@@ -1283,6 +1316,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskNoColorF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1294,6 +1328,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredNonIndexedDiffuseProgram.mShaderFiles.push_back(make_pair("deferred/diffuseF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredNonIndexedDiffuseProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredNonIndexedDiffuseProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 		
 
@@ -1307,6 +1342,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedDiffuseProgram.mShaderFiles.push_back(make_pair("deferred/diffuseF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedDiffuseProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredSkinnedDiffuseProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1319,6 +1355,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedBumpProgram.mShaderFiles.push_back(make_pair("deferred/bumpF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedBumpProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredSkinnedBumpProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1346,7 +1383,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedAlphaProgram.addPermutation("USE_VERTEX_COLOR", "1");
 		gDeferredSkinnedAlphaProgram.addPermutation("HAS_SHADOW", mVertexShaderLevel[SHADER_DEFERRED] > 1 ? "1" : "0");
 		success = gDeferredSkinnedAlphaProgram.createShader(NULL, NULL);
-		
+		llassert(success);
+
 		// Hack to include uniforms for lighting without linking in lighting file
 		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasLighting = true;
@@ -1361,6 +1399,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredBumpProgram.mShaderFiles.push_back(make_pair("deferred/bumpF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredBumpProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredBumpProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	gDeferredMaterialProgram[1].mFeatures.hasLighting = false;
@@ -1401,6 +1440,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			gDeferredMaterialProgram[i].addPermutation("HAS_SKIN",has_skin ? "1" : "0");
 
 			gDeferredMaterialProgram[i].mFeatures.hasSrgb = true;
+            gDeferredMaterialProgram[i].mFeatures.hasGamma = true;
+            gDeferredMaterialProgram[i].mFeatures.hasTransport = true;
             gDeferredMaterialProgram[i].mFeatures.decodesNormal = true;
             gDeferredMaterialProgram[i].mFeatures.encodesNormal = true;
             gDeferredMaterialProgram[i].mFeatures.calculatesAtmospherics = true;
@@ -1412,6 +1453,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			}
 
 			success = gDeferredMaterialProgram[i].createShader(NULL, NULL);
+            llassert(success);
 		}
 
 		if (success)
@@ -1436,6 +1478,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 			gDeferredMaterialWaterProgram[i].mFeatures.hasWaterFog = true;
 			gDeferredMaterialWaterProgram[i].mFeatures.hasSrgb = true;
+            gDeferredMaterialWaterProgram[i].mFeatures.hasGamma = true;
+            gDeferredMaterialWaterProgram[i].mFeatures.hasTransport = true;
             gDeferredMaterialWaterProgram[i].mFeatures.decodesNormal = true;
             gDeferredMaterialWaterProgram[i].mFeatures.encodesNormal = true;
             gDeferredMaterialWaterProgram[i].mFeatures.calculatesAtmospherics = true;
@@ -1447,6 +1491,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			}
 
 			success = gDeferredMaterialWaterProgram[i].createShader(NULL, NULL);//&mWLUniforms);
+            llassert(success);
 		}
 	}
 
@@ -1478,6 +1523,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredTreeProgram.mShaderFiles.push_back(make_pair("deferred/treeF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredTreeProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredTreeProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1488,6 +1534,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredTreeShadowProgram.mShaderFiles.push_back(make_pair("deferred/treeShadowF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredTreeShadowProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredTreeShadowProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1501,6 +1548,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredImpostorProgram.mShaderFiles.push_back(make_pair("deferred/impostorF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredImpostorProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredImpostorProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1513,6 +1561,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredLightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	for (U32 i = 0; i < LL_DEFERRED_MULTI_LIGHT_COUNT; i++)
@@ -1527,6 +1576,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			gDeferredMultiLightProgram[i].mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 			gDeferredMultiLightProgram[i].addPermutation("LIGHT_COUNT", llformat("%d", i+1));
 			success = gDeferredMultiLightProgram[i].createShader(NULL, NULL);
+            llassert(success);
 		}
 	}
 
@@ -1541,6 +1591,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSpotLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredSpotLightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1554,6 +1605,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredMultiSpotLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredMultiSpotLightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1582,6 +1634,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSunProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredSunProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1594,6 +1647,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredBlurLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredBlurLightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1605,6 +1659,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredAlphaProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
         gDeferredAlphaProgram.mFeatures.hasSrgb = true;
+        gDeferredAlphaProgram.mFeatures.hasGamma = true;
         gDeferredAlphaProgram.mFeatures.decodesNormal = true;
         gDeferredAlphaProgram.mFeatures.encodesNormal = true;
         gDeferredAlphaProgram.mFeatures.calculatesAtmospherics = true;
@@ -1628,6 +1683,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredAlphaProgram.createShader(NULL, NULL);
+        llassert(success);
 
 		// Hack
 		gDeferredAlphaProgram.mFeatures.calculatesLighting = true;
@@ -1665,6 +1721,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaImpostorProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredAlphaImpostorProgram.createShader(NULL, NULL);
+        llassert(success);
 
 		// Hack
 		gDeferredAlphaImpostorProgram.mFeatures.calculatesLighting = true;
@@ -1680,6 +1737,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaWaterProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
 		gDeferredAlphaWaterProgram.mFeatures.hasWaterFog = true;
 		gDeferredAlphaWaterProgram.mFeatures.hasSrgb = true;
+        gDeferredAlphaWaterProgram.mFeatures.hasGamma = true;
         gDeferredAlphaWaterProgram.mFeatures.decodesNormal = true;
         gDeferredAlphaWaterProgram.mFeatures.encodesNormal = true;
         gDeferredAlphaWaterProgram.mFeatures.calculatesAtmospherics = true;
@@ -1704,6 +1762,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredAlphaWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 
 		// Hack
 		gDeferredAlphaWaterProgram.mFeatures.calculatesLighting = true;
@@ -1719,11 +1778,13 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarEyesProgram.mFeatures.disableTextureIndex = true;
         gDeferredAvatarEyesProgram.mFeatures.hasSrgb = true;
         gDeferredAvatarEyesProgram.mFeatures.encodesNormal = true;
+        gDeferredAvatarEyesProgram.mFeatures.hasGamma = true;
 		gDeferredAvatarEyesProgram.mShaderFiles.clear();
 		gDeferredAvatarEyesProgram.mShaderFiles.push_back(make_pair("deferred/avatarEyesV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAvatarEyesProgram.mShaderFiles.push_back(make_pair("deferred/diffuseF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredAvatarEyesProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAvatarEyesProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1733,12 +1794,14 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightProgram.mFeatures.hasTransport = true;
 		gDeferredFullbrightProgram.mFeatures.hasSrgb = true;
+        gDeferredFullbrightProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredFullbrightProgram.mShaderFiles.clear();
 		gDeferredFullbrightProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredFullbrightProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredFullbrightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredFullbrightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1748,6 +1811,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightAlphaMaskProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightAlphaMaskProgram.mFeatures.hasTransport = true;
 		gDeferredFullbrightAlphaMaskProgram.mFeatures.hasSrgb = true;
+        gDeferredFullbrightAlphaMaskProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightAlphaMaskProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredFullbrightAlphaMaskProgram.mShaderFiles.clear();
 		gDeferredFullbrightAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1755,6 +1819,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightAlphaMaskProgram.addPermutation("HAS_ALPHA_MASK","1");
 		gDeferredFullbrightAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredFullbrightAlphaMaskProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1765,6 +1830,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightWaterProgram.mFeatures.hasTransport = true;
 		gDeferredFullbrightWaterProgram.mFeatures.hasWaterFog = true;
 		gDeferredFullbrightWaterProgram.mFeatures.hasSrgb = true;
+        gDeferredFullbrightWaterProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightWaterProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredFullbrightWaterProgram.mShaderFiles.clear();
 		gDeferredFullbrightWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1773,6 +1839,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
 		gDeferredFullbrightWaterProgram.addPermutation("WATER_FOG","1");
 		success = gDeferredFullbrightWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1783,6 +1850,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasTransport = true;
 		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasWaterFog = true;
 		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasSrgb = true;
+        gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.hasGamma = true;
 		gDeferredFullbrightAlphaMaskWaterProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
 		gDeferredFullbrightAlphaMaskWaterProgram.mShaderFiles.clear();
 		gDeferredFullbrightAlphaMaskWaterProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1792,6 +1860,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightAlphaMaskWaterProgram.addPermutation("HAS_ALPHA_MASK","1");
 		gDeferredFullbrightAlphaMaskWaterProgram.addPermutation("WATER_FOG","1");
 		success = gDeferredFullbrightAlphaMaskWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1806,6 +1875,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredFullbrightShinyProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightShinyF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredFullbrightShinyProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredFullbrightShinyProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1822,6 +1892,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedFullbrightProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedFullbrightProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
 		success = gDeferredSkinnedFullbrightProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1837,6 +1908,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedFullbrightShinyProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightShinyF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedFullbrightShinyProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
 		success = gDeferredSkinnedFullbrightShinyProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1851,6 +1923,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredEmissiveProgram.mShaderFiles.push_back(make_pair("deferred/emissiveF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredEmissiveProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredEmissiveProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1867,6 +1940,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
         gDeferredWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
 		success = gDeferredWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1884,6 +1958,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredUnderWaterProgram.mShaderFiles.push_back(make_pair("deferred/underWaterF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredUnderWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredUnderWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1894,7 +1969,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSoftenProgram.mFeatures.decodesNormal = true;
         gDeferredSoftenProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredSoftenProgram.mFeatures.hasAtmospherics = true;
-        gDeferredSoftenProgram.mFeatures.hasTransport = true;
         gDeferredSoftenProgram.mFeatures.hasGamma = true;
 
 		gDeferredSoftenProgram.mShaderFiles.push_back(make_pair("deferred/softenLightV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1908,6 +1982,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		}
 				
 		success = gDeferredSoftenProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1925,7 +2000,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSoftenWaterProgram.mFeatures.decodesNormal = true;
         gDeferredSoftenWaterProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredSoftenWaterProgram.mFeatures.hasAtmospherics = true;
-        gDeferredSoftenWaterProgram.mFeatures.hasTransport = true;
         gDeferredSoftenWaterProgram.mFeatures.hasGamma = true;
 
 		if (gSavedSettings.getBOOL("RenderDeferredSSAO"))
@@ -1934,6 +2008,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		}
 
 		success = gDeferredSoftenWaterProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1945,6 +2020,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredShadowProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		gDeferredShadowProgram.addPermutation("DEPTH_CLAMP", gGLManager.mHasDepthClamp ? "1" : "0");
 		success = gDeferredShadowProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1956,6 +2032,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredShadowCubeProgram.addPermutation("DEPTH_CLAMP", gGLManager.mHasDepthClamp ? "1" : "0");
 		gDeferredShadowCubeProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredShadowCubeProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1968,6 +2045,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredShadowAlphaMaskProgram.addPermutation("DEPTH_CLAMP", gGLManager.mHasDepthClamp ? "1" : "0");
 		gDeferredShadowAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredShadowAlphaMaskProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1980,6 +2058,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarShadowProgram.addPermutation("DEPTH_CLAMP", gGLManager.mHasDepthClamp ? "1" : "0");
 		gDeferredAvatarShadowProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAvatarShadowProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -1992,6 +2071,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAttachmentShadowProgram.addPermutation("DEPTH_CLAMP", gGLManager.mHasDepthClamp ? "1" : "0");
 		gDeferredAttachmentShadowProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAttachmentShadowProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2003,6 +2083,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredTerrainProgram.mShaderFiles.push_back(make_pair("deferred/terrainF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredTerrainProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredTerrainProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2015,6 +2096,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarProgram.mShaderFiles.push_back(make_pair("deferred/avatarF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredAvatarProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAvatarProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2042,6 +2124,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
 		success = gDeferredAvatarAlphaProgram.createShader(NULL, NULL);
+        llassert(success);
 
 		gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasLighting = true;
@@ -2056,6 +2139,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredGammaCorrect.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostGammaCorrectProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostGammaCorrectProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2066,6 +2150,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gFXAAProgram.mShaderFiles.push_back(make_pair("deferred/fxaaF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gFXAAProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gFXAAProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2076,6 +2161,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2086,6 +2172,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/cofF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredCoFProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredCoFProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2096,6 +2183,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/dofCombineF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredDoFCombineProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredDoFCombineProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2106,6 +2194,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoDoFF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostNoDoFProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostNoDoFProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)
@@ -2118,12 +2207,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLSkyProgram.mFeatures.hasGamma = true;
 		gDeferredWLSkyProgram.mShaderFiles.push_back(make_pair("deferred/skyV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredWLSkyProgram.mShaderFiles.push_back(make_pair("deferred/skyF.glsl", GL_FRAGMENT_SHADER_ARB));
-        gDeferredWLSkyProgram.mShaderLevel = gSavedSettings.getBOOL("RenderUseAdvancedAtmospherics") ? 3 : mVertexShaderLevel[SHADER_WINDLIGHT];
+        gDeferredWLSkyProgram.mShaderLevel = mVertexShaderLevel[SHADER_WINDLIGHT];
 		gDeferredWLSkyProgram.mShaderGroup = LLGLSLShader::SG_SKY;
-        if (gAtmosphere && mVertexShaderLevel[SHADER_WINDLIGHT] > 1)
-        {
-            gDeferredWLSkyProgram.mExtraLinkObject = gAtmosphere->getAtmosphericShaderForLink();
-        }
 		success = gDeferredWLSkyProgram.createShader(NULL, NULL);
         llassert(success);
 	}
@@ -2137,12 +2222,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLCloudProgram.mFeatures.hasGamma = true;
 		gDeferredWLCloudProgram.mShaderFiles.push_back(make_pair("deferred/cloudsV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredWLCloudProgram.mShaderFiles.push_back(make_pair("deferred/cloudsF.glsl", GL_FRAGMENT_SHADER_ARB));
-		gDeferredWLCloudProgram.mShaderLevel = gSavedSettings.getBOOL("RenderUseAdvancedAtmospherics") ? 3 : mVertexShaderLevel[SHADER_WINDLIGHT];
+		gDeferredWLCloudProgram.mShaderLevel = mVertexShaderLevel[SHADER_WINDLIGHT];
 		gDeferredWLCloudProgram.mShaderGroup = LLGLSLShader::SG_SKY;
-        if (gAtmosphere && mVertexShaderLevel[SHADER_WINDLIGHT] > 1)
-        {
-            gDeferredWLSkyProgram.mExtraLinkObject = gAtmosphere->getAtmosphericShaderForLink();
-        }
 		success = gDeferredWLCloudProgram.createShader(NULL, NULL);
         llassert(success);
 	}
@@ -2192,6 +2273,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredStarProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		gDeferredStarProgram.mShaderGroup = LLGLSLShader::SG_SKY;
 		success = gDeferredStarProgram.createShader(NULL, NULL);
+        llassert(success);
 	}
 
 	if (success)