Added setting 'SHAlwaysSoftenShadows' to soften shadows when ssao isn't enabled. Removed a couple dead settings.

indra/newview/app_settings/settings_sh.xml

@@ -184,28 +184,6 @@
       <string>Boolean</string>
       <key>Value</key>
       <integer>0</integer>
-    </map>
-    <key>SHPackDeferredNormals</key>
-    <map>
-      <key>Comment</key>
-      <string>Pack deferred normals into two components.</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
-    <key>SHPrecisionDeferredNormals</key>
-    <map>
-      <key>Comment</key>
-      <string>Enable usage of RGB10A2 for the deferred normalMap format. Reduces normalmapping artifacts.</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
     </map>
 	<key>SHOcclusionFudge</key>
     <map>
@@ -240,5 +218,16 @@
       <key>Value</key>
       <real>0.09</real>
     </map>
+    <key>SHAlwaysSoftenShadows</key>
+    <map>
+      <key>Comment</key>
+      <string>Enable optional blur pass on shadows.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <real>1</real>
+    </map>
   </map>
 </llsd>

indra/newview/pipeline.cpp

@@ -7921,7 +7921,8 @@ void LLPipeline::renderDeferredLighting()
 			mDeferredLight.flush();
 		}
 
-		if (RenderDeferredSSAO)
+		static const LLCachedControl<bool> SHAlwaysSoftenShadows("SHAlwaysSoftenShadows",true);
+		if (RenderDeferredSSAO || (RenderShadowDetail > 0 && SHAlwaysSoftenShadows))
 		{ //soften direct lighting lightmap
 			LLFastTimer ftm(FTM_SOFTEN_SHADOW);
 			//blur lightmap