diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl
index c8ddefac266f1679d90ed5c7a4c156b0cad1bc4e..f2d230076657ac8820c0bf1f489c48a74f3cefc0 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl
@@ -38,8 +38,6 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
-vec3 scaleDownLight(vec3 light);
-vec3 scaleUpLight(vec3 light);
 
 VARYING vec3 vary_position;
 VARYING vec3 vary_ambient;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/emissiveV.glsl b/indra/newview/app_settings/shaders/class1/deferred/emissiveV.glsl
index 115b04797f8a1bfc346cc14057f08d77f9d47d82..7fec3e03e76a26d2cc0eccf3e8773bfa8848cc7f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/emissiveV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/emissiveV.glsl
@@ -36,9 +36,6 @@ void calcAtmospherics(vec3 inPositionEye);
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
-vec3 scaleDownLight(vec3 light);
-vec3 scaleUpLight(vec3 light);
-
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
index 8e899e3e0f32df89f36b81531d979ced9b57f534..816bd0bf3e0f4d3293822141bdecdbff721371ad 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
@@ -37,8 +37,6 @@ void calcAtmospherics(vec3 inPositionEye);
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
-vec3 scaleDownLight(vec3 light);
-vec3 scaleUpLight(vec3 light);
 
 #ifdef WATER_FOG
 VARYING vec3 vary_position;
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
index 3f70a8935bcc87ae3154e5925799cd90c3f6a92b..c16e3d50a2439c921bd8e17f91abe71d42f1ef26 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersF.glsl
@@ -47,9 +47,3 @@ vec3 scaleDownLight(vec3 light)
 	return light;
 }
 
-vec3 scaleUpLight(vec3 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 89b6a52909a30821f2350156f702feceed2b5e51..9f68ca3dfafada600da185712685c40ea4f4c1d8 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl
@@ -47,9 +47,3 @@ vec3 scaleDownLight(vec3 light)
 	return light;
 }
 
-vec3 scaleUpLight(vec3 light)
-{
-	/* stub function for fallback compatibility on class1 hardware */
-	return light;
-}
-
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
index 3582759e62bf21f42bee9d486cf2f7e25e340b7b..63c683c99e44d9556523eff2e3e5fce0e8a86a07 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersF.glsl
@@ -42,8 +42,3 @@ vec3 scaleDownLightFrag(vec3 light)
 	return (light / scene_light_strength );
 }
 
-vec3 scaleUpLightFrag(vec3 light)
-{
-	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 62a034ce052cb800990f079149e854d4f816337f..617704ff67f370cfb6b95929151d984c7cbdc98b 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsHelpersV.glsl
@@ -54,8 +54,3 @@ vec3 scaleDownLight(vec3 light)
 	return (light / scene_light_strength );
 }
 
-vec3 scaleUpLight(vec3 light)
-{
-	return (light * scene_light_strength);
-}
-
diff --git a/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl b/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl
index dadff40933a1dc067f024741e0c41ceed4d3a24d..b5dcd2eba2ae399ed6f1f4b32287941052287575 100644
--- a/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl
+++ b/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl
@@ -30,7 +30,6 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
 vec3 scaleDownLight(vec3 light);
-vec3 scaleUpLight(vec3 light);
 
 uniform vec4 light_position[8];
 uniform vec3 light_direction[8];