[Android] Disable most video preferences if Software Rendering is cho…

…sen. Since the software renderer and other renderers have little in common, it doesn't make sense to keep many of the video preferences enabled.

Source/Android/src/org/dolphinemu/dolphinemu/settings/VideoSettingsFragment.java

@@ -16,9 +16,13 @@
 import org.dolphinemu.dolphinemu.R;
 
 import android.app.Activity;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.os.Bundle;
 import android.preference.ListPreference;
 import android.preference.PreferenceFragment;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
 
 /**
  * Responsible for handling the loading of the video preferences.
@@ -195,6 +199,58 @@ public void onCreate(Bundle savedInstanceState)
 			videoBackends.setEntries(R.array.videoBackendEntriesNoGLES3);
 			videoBackends.setEntryValues(R.array.videoBackendValuesNoGLES3);
 		}
+
+		//
+		// Disable all options if Software Rendering is used.
+		//
+		// Note that the numeric value in 'getPreference()'
+		// denotes the placement on the UI. So if more elements are
+		// added to the video settings, these may need to change.
+		//
+		final SharedPreferences sPrefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
+		final PreferenceScreen mainScreen = getPreferenceScreen();
+
+		if (videoBackends.getValue().equals("Software Renderer"))
+		{
+			mainScreen.getPreference(0).setEnabled(false);
+			mainScreen.getPreference(1).setEnabled(false);
+			mainScreen.getPreference(3).setEnabled(false);
+			mainScreen.getPreference(4).setEnabled(false);
+		}
+		else if (videoBackends.getValue().equals("OGL"))
+		{
+			mainScreen.getPreference(0).setEnabled(true);
+			mainScreen.getPreference(1).setEnabled(true);
+			mainScreen.getPreference(3).setEnabled(true);
+			mainScreen.getPreference(4).setEnabled(true);
+		}
+
+		// Also set a listener, so that if someone changes the video backend, it will disable
+		// the video settings, upon the user choosing "Software Rendering".
+		sPrefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener()
+		{
+			@Override
+			public void onSharedPreferenceChanged(SharedPreferences preference, String key)
+			{
+				if (key.equals("gpuPref"))
+				{
+					if (preference.getString(key, "Software Renderer").equals("Software Renderer"))
+					{
+						mainScreen.getPreference(0).setEnabled(false);
+						mainScreen.getPreference(1).setEnabled(false);
+						mainScreen.getPreference(3).setEnabled(false);
+						mainScreen.getPreference(4).setEnabled(false);
+					}
+					else if (preference.getString(key, "Software Renderer").equals("OGL"))
+					{
+						mainScreen.getPreference(0).setEnabled(true);
+						mainScreen.getPreference(1).setEnabled(true);
+						mainScreen.getPreference(3).setEnabled(true);
+						mainScreen.getPreference(4).setEnabled(true);
+					}
+				}
+			}
+		});
 	}
 
 	@Override