Merge

17 files changed, 228 insertions, 225 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
index b810bb4fd1..43f0034874 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
@@ -86,6 +86,8 @@ vec4 getPosition(vec2 pos_screen)
 	return pos;
 }
 
+#if USE_DEFERRED_SHADER_API
+
 vec4 getPositionWithDepth(vec2 pos_screen, float depth)
 {
 	vec2 sc = getScreenCoordinate(pos_screen);
@@ -285,3 +287,5 @@ float calcAmbientOcclusion(vec4 pos, vec3 norm, vec2 pos_screen)
 	return min(ret, 1.0);
 }
 
+#endif
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
index cbc19bbba3..8791469675 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
@@ -45,7 +45,7 @@ vec3 linear_to_srgb(vec3 cl);
 void main() 
 {
 	vec4 diff = texture2DRect(diffuseRect, vary_fragcoord);
-	diff.rgb = linear_to_srgb(diff.rgb);
+    diff.rgb = pow(diff.rgb, vec3(display_gamma));
 	frag_color = diff;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 18259ed9ed..5813dd84ee 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -41,7 +41,7 @@ uniform sampler2DRect normalMap;
 uniform sampler2DRect lightMap;
 uniform sampler2DRect depthMap;
 uniform samplerCube environmentMap;
-uniform sampler2D	  lightFunc;
+uniform sampler2D     lightFunc;
 
 uniform float blur_size;
 uniform float blur_fidelity;
@@ -78,114 +78,106 @@ vec3 fullbrightScaleSoftClip(vec3 l);
 
 vec4 getPosition_d(vec2 pos_screen, float depth)
 {
-	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;
+    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;
 }
 
 vec4 getPosition(vec2 pos_screen)
 { //get position in screen space (world units) given window coordinate and depth map
-	float depth = texture2DRect(depthMap, pos_screen.xy).a;
-	return getPosition_d(pos_screen, depth);
+    float depth = texture2DRect(depthMap, pos_screen.xy).a;
+    return getPosition_d(pos_screen, depth);
 }
 
 
 void main() 
 {
-	vec2 tc = vary_fragcoord.xy;
-	float depth = texture2DRect(depthMap, tc.xy).r;
-	vec3 pos = getPosition_d(tc, depth).xyz;
-	vec4 norm = texture2DRect(normalMap, tc);
-	float envIntensity = norm.z;
-	norm.xyz = decode_normal(norm.xy); // unpack norm
-		
-	float da = dot(norm.xyz, sun_dir.xyz);
-
-	float final_da = max(0.0,da);
-              final_da = min(final_da, 1.0f);
-
-// why an ad hoc gamma boost here? srgb_to_linear instead?
-	      final_da = pow(final_da, 1.0/1.3);
-
-	vec4 diffuse = texture2DRect(diffuseRect, tc);
-
-	//convert to gamma space
-	diffuse.rgb = linear_to_srgb(diffuse.rgb);
-
-	vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
-	vec3 col;
-	float bloom = 0.0;
-	{
+    vec2 tc = vary_fragcoord.xy;
+    float depth = texture2DRect(depthMap, tc.xy).r;
+    vec3 pos = getPosition_d(tc, depth).xyz;
+    vec4 norm = texture2DRect(normalMap, tc);
+    float envIntensity = norm.z;
+    norm.xyz = decode_normal(norm.xy); // unpack norm
+        
+    float da = dot(norm.xyz, sun_dir.xyz);
+
+    float final_da = clamp(da, 0.0, 1.0);
+          final_da = pow(final_da, 1.0/1.3);
+
+    vec4 diffuse = texture2DRect(diffuseRect, tc);
+
+    //convert to gamma space
+    diffuse.rgb = linear_to_srgb(diffuse.rgb);
+
+    vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
+    vec3 col;
+    float bloom = 0.0;
+    {
         vec3 sunlit;
         vec3 amblit;
         vec3 additive;
         vec3 atten;
-		calcFragAtmospherics(pos.xyz, 1.0, sunlit, amblit, additive, atten);
-	
-		float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
-		ambient *= 0.5;
-		ambient *= ambient;
-		ambient = (1.0 - ambient);
-
-		col = amblit;
+        calcFragAtmospherics(pos.xyz, 1.0, sunlit, amblit, additive, atten);
+    
+        float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
+        ambient *= 0.5;
+        ambient *= ambient;
+        ambient = (1.0 - ambient);
+
+        col = amblit;
         col *= ambient;
-		col += (final_da * sunlit);        
-		col *= diffuse.rgb;
-	
-		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
-
-		if (spec.a > 0.0) // specular reflection
-		{
-			// the old infinite-sky shiny reflection
-			//
-			
-			float sa = dot(refnormpersp, sun_dir.xyz);
-			vec3 dumbshiny = sunlit*(texture2D(lightFunc, vec2(sa, spec.a)).r);
-			
-			// add the two types of shiny together
-			vec3 spec_contrib = dumbshiny * spec.rgb;
-			bloom = dot(spec_contrib, spec_contrib) / 6;
-			col += spec_contrib;
-		}
-		
-		
-		col = mix(col.rgb, diffuse.rgb, diffuse.a);
-				
-		if (envIntensity > 0.0)
-		{ //add environmentmap
-			vec3 env_vec = env_mat * refnormpersp;
-			
-			
-			vec3 refcol = textureCube(environmentMap, env_vec).rgb;
-
-			col = mix(col.rgb, refcol, 
-				envIntensity);  
-		}
-				
-		if (norm.w < 0.5)
-		{
-			col = mix(atmosFragLighting(col, additive, atten), fullbrightAtmosTransportFrag(col, additive, atten), diffuse.a);
-			col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
-		}
-
-		#ifdef WATER_FOG
-			vec4 fogged = applyWaterFogView(pos.xyz,vec4(col, bloom));
-			col = fogged.rgb;
-			bloom = fogged.a;
-		#endif
-
-		col = srgb_to_linear(col);
-
-		//col = vec3(1,0,1);
-		//col.g = envIntensity;
-	}
-
-	frag_color.rgb = col.rgb;
-	frag_color.a = bloom;
+        col += (final_da * sunlit);        
+        col *= diffuse.rgb;
+    
+        vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
+
+        if (spec.a > 0.0) // specular reflection
+        {
+            // the old infinite-sky shiny reflection
+            //
+            
+            float sa = dot(refnormpersp, sun_dir.xyz);
+            vec3 dumbshiny = sunlit*(texture2D(lightFunc, vec2(sa, spec.a)).r);
+            
+            // add the two types of shiny together
+            vec3 spec_contrib = dumbshiny * spec.rgb;
+            bloom = dot(spec_contrib, spec_contrib) / 6;
+            col += spec_contrib;
+        }
+        
+        col = mix(col.rgb, diffuse.rgb, diffuse.a);
+                
+        if (envIntensity > 0.0)
+        { //add environmentmap
+            vec3 env_vec = env_mat * refnormpersp;
+            vec3 refcol = textureCube(environmentMap, env_vec).rgb;
+            col = mix(col.rgb, refcol, envIntensity);  
+        }
+                
+        if (norm.w < 0.5)
+        {
+            col = mix(atmosFragLighting(col, additive, atten), fullbrightAtmosTransportFrag(col, additive, atten), diffuse.a);
+            col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
+        }
+
+        #ifdef WATER_FOG
+            vec4 fogged = applyWaterFogView(pos.xyz,vec4(col, bloom));
+            col = fogged.rgb;
+            bloom = fogged.a;
+        #endif
+
+        col = srgb_to_linear(col);
+
+        //col = vec3(1,0,1);
+        //col.g = envIntensity;
+    }
+
+    frag_color.rgb = col.rgb;
+    frag_color.a = bloom;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
index b59fcbe017..e992776cb4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
@@ -1,5 +1,5 @@
 /** 
- * @file softenLightF.glsl
+ * @file softenLightV.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsF.glsl
index c1cc3679a7..8b7c4f2ecf 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsF.glsl
@@ -32,7 +32,7 @@ vec3 atmosFragAmbient(vec3 light, vec3 sunlit)
 vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten)
 {
     /* stub function for fallback compatibility on class1 hardware */
-	return light;
+    return light;
 }
 
 vec3 atmosFragAffectDirectionalLight(float light, vec3 sunlit)
@@ -43,11 +43,11 @@ vec3 atmosFragAffectDirectionalLight(float light, vec3 sunlit)
 vec3 atmosLighting(vec3 light)
 {
     /* stub function for fallback compatibility on class1 hardware */
-	return light;
+    return light;
 }
 
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive)
 {
-	/* stub function for fallback compatibility on class1 hardware */
+    /* stub function for fallback compatibility on class1 hardware */
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
index c16e3d50a2..10407eeb02 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
@@ -25,25 +25,27 @@
  
 uniform vec4 sunlight_color;
 uniform vec4 light_ambient;
+uniform int no_atmo;
 
 vec3 atmosAmbient(vec3 light)
 {
-	return light + light_ambient.rgb;
+    if (no_atmo == 1) return light + vec3(0.66);
+    return light + light_ambient.rgb;
 }
 
 vec3 atmosAffectDirectionalLight(float lightIntensity)
 {
-	return sunlight_color.rgb * lightIntensity;
+    return sunlight_color.rgb * lightIntensity;
 }
 
 vec3 atmosGetDiffuseSunlightColor()
 {
-	return sunlight_color.rgb;
+    return sunlight_color.rgb;
 }
 
 vec3 scaleDownLight(vec3 light)
 {
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
+    /* stub function for fallback compatibility on class1 hardware */
+    return light;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
index 89b6a52909..14034bccae 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
@@ -25,31 +25,33 @@
  
 uniform vec4 sunlight_color;
 uniform vec4 light_ambient;
+uniform int no_atmo;
 
 vec3 atmosAmbient(vec3 light)
 {
-	return light + light_ambient.rgb;
+    if (no_atmo == 1) return light + vec3(0.66);
+    return light + light_ambient.rgb;
 }
 
 vec3 atmosAffectDirectionalLight(float lightIntensity)
 {
-	return sunlight_color.rgb * lightIntensity;
+    return sunlight_color.rgb * lightIntensity;
 }
 
 vec3 atmosGetDiffuseSunlightColor()
 {
-	return sunlight_color.rgb;
+    return sunlight_color.rgb;
 }
 
 vec3 scaleDownLight(vec3 light)
 {
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
+    /* stub function for fallback compatibility on class1 hardware */
+    return light;
 }
 
 vec3 scaleUpLight(vec3 light)
 {
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
+    /* stub function for fallback compatibility on class1 hardware */
+    return light;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
index 76d7d5059d..b749e1a7a2 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsV.glsl
@@ -29,7 +29,7 @@ void setPositionEye(vec3 v);
 
 void calcAtmospherics(vec3 inPositionEye)
 {
-	/* stub function for fallback compatibility on class1 hardware */
-	setPositionEye(inPositionEye);
+    /* stub function for fallback compatibility on class1 hardware */
+    setPositionEye(inPositionEye);
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 308a85d2d9..541122fb18 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -153,10 +153,9 @@ void main()
 		ambient *= ambient;
 		ambient = (1.0-ambient);
 
-		col.rgb = ambient * ((col * 0.5) + amblit);
-
-		col += sunlit * max(min(da, scol), 0.0);
-	
+		col.rgb = amblit;
+		col.rgb *= ambient;
+		col += sunlit * min(da, scol);
 		col *= diffuse.rgb;
 	
 		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
index 9653e0809e..2a629f4f42 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl
@@ -51,9 +51,9 @@ vec3 atmosFragLighting(vec3 light, vec3 additive, vec3 atten)
     {
         return light;
     }
-	light *= atten.r;
-	light += additive * 2.0;
-	return light;
+    light *= atten.r;
+    light += additive;
+    return light * 2.0;
 }
 
 vec3 atmosLighting(vec3 light)
@@ -63,84 +63,84 @@ vec3 atmosLighting(vec3 light)
 
 void calcFragAtmospherics(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten) {
 
-	vec3 P = inPositionEye;
-	
-	vec3 tmpLightnorm = lightnorm.xyz;
-
-	vec3 Pn = normalize(P);
-	float Plen = length(P);
-
-	vec4 temp1 = vec4(0);
-	vec3 temp2 = vec3(0);
-	vec4 blue_weight;
-	vec4 haze_weight;
-	vec4 sunlight = sunlight_color;
-	vec4 light_atten;
-
-	//sunlight attenuation effect (hue and brightness) due to atmosphere
-	//this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
-		//I had thought blue_density and haze_density should have equal weighting,
-		//but attenuation due to haze_density tends to seem too strong
-
-	temp1 = blue_density + vec4(haze_density);
-	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density) / temp1;
-
-	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
-	temp2.y = max(0.0, tmpLightnorm.y);
-	temp2.y = 1. / temp2.y;
-	sunlight *= exp( - light_atten * temp2.y);
-
-	// main atmospheric scattering line integral
-	temp2.z = Plen * density_multiplier;
-
-	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
-	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
-
-	//final atmosphere attenuation factor
-	atten = temp1.rgb;
-	
-	//compute haze glow
-	//(can use temp2.x as temp because we haven't used it yet)
-	temp2.x = dot(Pn, tmpLightnorm.xyz);
-	temp2.x = 1. - temp2.x;
-		//temp2.x is 0 at the sun and increases away from sun
-	temp2.x = max(temp2.x, .03);	//was glow.y
-		//set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
-	temp2.x *= glow.x;
-		//higher glow.x gives dimmer glow (because next step is 1 / "angle")
-	temp2.x = pow(temp2.x, glow.z);
-		//glow.z should be negative, so we're doing a sort of (1 / "angle") function
-
-	//add "minimum anti-solar illumination"
-	temp2.x += .25;
-	
-	//increase ambient when there are more clouds
-	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
-	
-	/*  decrease value and saturation (that in HSV, not HSL) for occluded areas
-	 * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
-	 * // The following line of code performs the equivalent of:
-	 * float ambAlpha = tmpAmbient.a;
-	 * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis
-	 * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue);
-	 * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha);
-	 */
-	tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a);
-
-	//haze color
+    vec3 P = inPositionEye;
+    
+    vec3 tmpLightnorm = lightnorm.xyz;
+
+    vec3 Pn = normalize(P);
+    float Plen = length(P);
+
+    vec4 temp1 = vec4(0);
+    vec3 temp2 = vec3(0);
+    vec4 blue_weight;
+    vec4 haze_weight;
+    vec4 sunlight = sunlight_color;
+    vec4 light_atten;
+
+    //sunlight attenuation effect (hue and brightness) due to atmosphere
+    //this is used later for sunlight modulation at various altitudes
+    light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
+        //I had thought blue_density and haze_density should have equal weighting,
+        //but attenuation due to haze_density tends to seem too strong
+
+    temp1 = blue_density + vec4(haze_density);
+    blue_weight = blue_density / temp1;
+    haze_weight = vec4(haze_density) / temp1;
+
+    //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
+    temp2.y = max(0.0, tmpLightnorm.y);
+    temp2.y = 1. / temp2.y;
+    sunlight *= exp( - light_atten * temp2.y);
+
+    // main atmospheric scattering line integral
+    temp2.z = Plen * density_multiplier;
+
+    // Transparency (-> temp1)
+    // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
+    // compiler gets confused.
+    temp1 = exp(-temp1 * temp2.z * distance_multiplier);
+
+    //final atmosphere attenuation factor
+    atten = temp1.rgb;
+    
+    //compute haze glow
+    //(can use temp2.x as temp because we haven't used it yet)
+    temp2.x = dot(Pn, tmpLightnorm.xyz);
+    temp2.x = 1. - temp2.x;
+        //temp2.x is 0 at the sun and increases away from sun
+    temp2.x = max(temp2.x, .03);    //was glow.y
+        //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+    temp2.x *= glow.x;
+        //higher glow.x gives dimmer glow (because next step is 1 / "angle")
+    temp2.x = pow(temp2.x, glow.z);
+        //glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+    //add "minimum anti-solar illumination"
+    temp2.x += .25;
+    
+    //increase ambient when there are more clouds
+    vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
+    
+    /*  decrease value and saturation (that in HSV, not HSL) for occluded areas
+     * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
+     * // The following line of code performs the equivalent of:
+     * float ambAlpha = tmpAmbient.a;
+     * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis
+     * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue);
+     * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha);
+     */
+    tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a);
+
+    //haze color
         additive =
-		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
-     	          + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
-		  + tmpAmbient));
+        vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
+                  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
+          + tmpAmbient));
 
-	//brightness of surface both sunlight and ambient
-	sunlit = vec3(sunlight * .5);
-	amblit = vec3(tmpAmbient * .25);
+    //brightness of surface both sunlight and ambient
+    sunlit = vec3(sunlight * .5);
+    amblit = vec3(tmpAmbient * .25);
     additive  = normalize(additive);
-	additive *= vec3(1.0 - exp(-temp2.z * distance_multiplier)) * 0.5;
+    additive *= vec3(1.0 - exp(-temp2.z * distance_multiplier)) * 0.5;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
index 63c683c99e..86743dc306 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
@@ -26,19 +26,21 @@
 // Output variables
 
 uniform float scene_light_strength;
+uniform int no_atmo;
 
 vec3 atmosFragAmbient(vec3 light, vec3 amblit)
 {
-	return amblit + light / 2.0;
+    if (no_atmo == 1) return light;
+    return amblit + light / 2.0;
 }
 
 vec3 atmosFragAffectDirectionalLight(float lightIntensity, vec3 sunlit)
 {
-	return sunlit * lightIntensity;
+    return sunlit * lightIntensity;
 }
 
 vec3 scaleDownLightFrag(vec3 light)
 {
-	return (light / scene_light_strength );
+    return (light / scene_light_strength );
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl
index 62a034ce05..95b4a76880 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl
@@ -33,29 +33,31 @@ vec3 getAtmosAttenuation();
 vec3 getPositionEye();
 
 uniform float scene_light_strength;
+uniform int no_atmo;
 
 vec3 atmosAmbient(vec3 light)
 {
-	return getAmblitColor() + light / 2.0;
+    if (no_atmo == 1) return light + vec3(0.66);
+    return getAmblitColor() + light / 2.0;
 }
 
 vec3 atmosAffectDirectionalLight(float lightIntensity)
 {
-	return getSunlitColor() * lightIntensity;
+    return getSunlitColor() * lightIntensity;
 }
 
 vec3 atmosGetDiffuseSunlightColor()
 {
-	return getSunlitColor();
+    return getSunlitColor();
 }
 
 vec3 scaleDownLight(vec3 light)
 {
-	return (light / scene_light_strength );
+    return (light / scene_light_strength );
 }
 
 vec3 scaleUpLight(vec3 light)
 {
-	return (light * scene_light_strength);
+    return (light * scene_light_strength);
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
index 6401845af2..ac7c57747e 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/gammaF.glsl
@@ -48,11 +48,11 @@ vec3 scaleSoftClip(vec3 light)
 }
 
 vec3 fullbrightScaleSoftClipFrag(vec3 light) {
-    return mix(scaleSoftClip(light.rgb), light.rgb, getAtmosAttenuation()); 
+    return scaleSoftClipFrag(light.rgb); 
 }
 
 vec3 fullbrightScaleSoftClip(vec3 light)
 {
-    return fullbrightScaleSoftClipFrag(light);
+    return scaleSoftClipFrag(light);
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl b/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl
index 359fea3073..df731662e8 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/transportF.glsl
@@ -36,11 +36,11 @@ vec3 atmosTransportFrag(vec3 light, vec3 additive, vec3 atten)
 {
     if (no_atmo == 1)
     {
-	    return light;
+        return light;
     }
     light *= atten.r;
-	light += additive * 2.0;
-	return light;
+    light += additive * 2.0;
+    return light;
 }
 
 vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten)
@@ -49,17 +49,17 @@ vec3 fullbrightAtmosTransportFrag(vec3 light, vec3 additive, vec3 atten)
     {
         return light;
     }
-	float brightness = dot(light.rgb, vec3(0.33333));
-	return mix(atmosTransportFrag(light.rgb, additive, atten), light.rgb + additive.rgb, brightness * brightness);
+    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 atten, vec3 additive) {
+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);
+    float brightness = dot(light.rgb, vec3(0.33333));
+    return mix(atmosTransportFrag(light.rgb, additive, atten), (light.rgb + additive.rgb) * (2.0 - brightness), brightness * brightness);
 }
 
 vec3 atmosTransport(vec3 light)
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 16fc0f702d..f4f9a3a0c2 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -991,8 +991,10 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
     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] ) );
     index_channels.push_back(-1);	 shaders.push_back( make_pair( "environment/srgbF.glsl",				    mVertexShaderLevel[SHADER_ENVIRONMENT] ) );
+#if USE_DEFERRED_SHADER_API
     index_channels.push_back(-1);	 shaders.push_back( make_pair( "deferred/deferredUtil.glsl",				    mVertexShaderLevel[SHADER_DEFERRED] ) );
     index_channels.push_back(-1);	 shaders.push_back( make_pair( "deferred/indirect.glsl",				    mVertexShaderLevel[SHADER_DEFERRED] ) );
+#endif
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightNonIndexedF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightAlphaMaskNonIndexedF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightNonIndexedF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index b890e21e41..f5aa003417 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -1000,11 +1000,8 @@ void LLVOSky::setMoonTextures(const LLUUID& moon_texture, const LLUUID& moon_tex
 {
     LLSettingsSky::ptr_t psky = LLEnvironment::instance().getCurrentSky();
 
-    LLUUID moon_tex = moon_texture.isNull() ? psky->GetDefaultMoonTextureId() : moon_texture;
-    LLUUID moon_tex_next = moon_texture_next.isNull() ? psky->GetDefaultMoonTextureId() : moon_texture_next;
-
-    mMoonTexturep[0] = moon_tex.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_tex, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mMoonTexturep[1] = moon_tex_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_tex_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mMoonTexturep[0] = moon_texture.isNull()      ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mMoonTexturep[1] = moon_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
 
     if (mFace[FACE_MOON])
     {
diff --git a/indra/newview/skins/default/xui/en/panel_settings_sky_clouds.xml b/indra/newview/skins/default/xui/en/panel_settings_sky_clouds.xml
index 457082ede2..11a852f40b 100644
--- a/indra/newview/skins/default/xui/en/panel_settings_sky_clouds.xml
+++ b/indra/newview/skins/default/xui/en/panel_settings_sky_clouds.xml
@@ -128,10 +128,11 @@
                     visible="true"
                     left_delta="0"
                     top_delta="21"
-                    min_val_x="-10"
-                    max_val_x="10"
-                    min_val_y="-10"
-                    max_val_y="10" />
+                    min_val_x="-30"
+                    max_val_x="30"
+                    min_val_y="-30"
+                    max_val_y="30" 
+                    logarithmic="1"/>
 
             <text
                     follows="left|top"