Make sure CAS controls are not active with vintage mode. (#3176)

Also make extra sure vintage mode is enabled when GL3 is detected.

Author: Geenz

indra/newview/llfeaturemanager.cpp

@@ -717,6 +717,9 @@ void LLFeatureManager::applyBaseMasks()
         // make sure to disable background context activity in GL3 mode
         LLImageGLThread::sEnabledMedia = false;
         LLImageGLThread::sEnabledTextures = false;
+
+        // Make extra sure that vintage mode also gets enabled.
+        gSavedSettings.setBOOL("RenderVintageMode", true);
     }
 
     // now mask by gpu string

indra/newview/llfloaterpreferencesgraphicsadvanced.cpp

@@ -271,6 +271,7 @@ void LLFloaterPreferenceGraphicsAdvanced::disableUnavailableSettings()
     LLCheckBoxCtrl* ctrl_dof = getChild<LLCheckBoxCtrl>("UseDoF");
     LLSliderCtrl* sky = getChild<LLSliderCtrl>("SkyMeshDetail");
     LLTextBox* sky_text = getChild<LLTextBox>("SkyMeshDetailText");
+    LLSliderCtrl* cas_slider = getChild<LLSliderCtrl>("RenderSharpness");
 
     // disabled windlight
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("WindLightUseAtmosShaders"))
@@ -330,6 +331,7 @@ void LLFloaterPreferenceGraphicsAdvanced::disableUnavailableSettings()
     tonemapLabel->setEnabled(!is_vintage);
     tonemapMix->setEnabled(!is_vintage);
     exposureSlider->setEnabled(!is_vintage);
+    cas_slider->setEnabled(!is_vintage);
 }
 
 void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()