SL-11238, SL-11337

Tweak application of ambient in deferred soften light for class1/2

indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl

@@ -111,7 +111,7 @@ void main()
         vec3 sun_contrib = final_da * sunlit;
 
 #if !defined(AMBIENT_KILL)
-        color.rgb = amblit * 0.5;
+        color.rgb = pow(amblit, vec3(1.0/1.3));
         color.rgb *= ambient;
 #endif
 

indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl

@@ -120,6 +120,7 @@ void main()
 
 #if !defined(AMBIENT_KILL)
         color.rgb = amblit * 0.5;
+        color.rgb = pow(color.rgb, vec3(1.0/1.1));
         color.rgb *= ambient;
 #endif