diff --git a/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
index 2cef8f2a5d2a61b2d9857a91e2ac3ae4163da7e4..a2b4b3b8c85e9e6161020aa768b43359f2f44cb3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
@@ -24,6 +24,7 @@
  */
  
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index bff87cb6aac7499a1ae030a8b6fac365c9ee19e2..9050b2c5b79f915cf824f597c2db31f439f57811 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -32,6 +32,7 @@ out vec4 frag_color;
 //class 1 -- no shadows
 
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 uniform sampler2DRect diffuseRect;
 uniform sampler2DRect specularRect;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 89448e2167a2dddf414aa7f6baff508775f5dc80..ae185585063e07bb05822b9d8543747635f4f89e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -24,6 +24,7 @@
  */
  
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index cca63872de2142faa13bce99ad2b4e703e1a73bc..fddfe60c0351b0505565613a07453995061450e1 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -33,6 +33,7 @@ out vec4 frag_color;
 //class 1 -- no shadows
 
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 uniform sampler2DRect diffuseRect;
 uniform sampler2DRect specularRect;
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 5621e47ab70989761a7d7249fb43edb503c7b8a6..57e17ad0092b7ab6a7dea8d7dcbe3a2905a9aebc 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -24,6 +24,7 @@
  */
  
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 6d6ad6d5655560e5e07ce8008edf82c6500adb8d..57abe75c45163780e75923803d0fbb44f5d98361 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -24,6 +24,7 @@
  */
  
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;