1 files changed, 9 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightV.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightV.glsl
index 8b8b338f68..bd11aa3f05 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightV.glsl
@@ -31,10 +31,19 @@ uniform vec2 screen_res;
 
 VARYING vec2 vary_fragcoord;
 
+// forwards
+void setAtmosAttenuation(vec3 c);
+void setAdditiveColor(vec3 c);
+
 void main()
 {
 	//transform vertex
 	vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
 	gl_Position = pos; 
+
+    // appease OSX GLSL compiler/linker by touching all the varyings we said we would
+    setAtmosAttenuation(vec3(1));
+    setAdditiveColor(vec3(0));
+
 	vary_fragcoord = (pos.xy*0.5+0.5)*screen_res;
 }