Some fixes in jme-vr (#1163)

* Added Valve Index to the recognized HMD list

* Fix lwjgl version mismatch

* Removing linux from the blacklist

jme3-vr/build.gradle

@@ -2,7 +2,7 @@ if (!hasProperty('mainClass')) {
     ext.mainClass = ''
 }
 
-def lwjglVersion = '3.2.0'
+def lwjglVersion = '3.2.1'
 
 sourceCompatibility = '1.8'
 

jme3-vr/src/main/java/com/jme3/app/VREnvironment.java

@@ -433,8 +433,13 @@ public class VREnvironment {
         // we are going to use OpenVR now, not the Oculus Rift
         // OpenVR does support the Rift
         String OS     = System.getProperty("os.name", "generic").toLowerCase(Locale.ENGLISH);
-        vrSupportedOS = !OS.contains("nux") && System.getProperty("sun.arch.data.model").equalsIgnoreCase("64"); //for the moment, linux/unix causes crashes, 64-bit only
-        compositorOS  = OS.contains("indows");
+        vrSupportedOS = System.getProperty("sun.arch.data.model").equalsIgnoreCase("64"); //64-bit only
+        compositorOS  = OS.contains("indows") || OS.contains("nux");
+
+        if (OS.contains("nux") && vrBinding != VRConstants.SETTING_VRAPI_OPENVR_LWJGL_VALUE){
+        	logger.severe("Only LWJGL VR backend is currently (partially) supported on Linux.");
+        	vrSupportedOS = false;
+        }
 
         if( vrSupportedOS) {
         	if( vrBinding == VRConstants.SETTING_VRAPI_OSVR_VALUE ) {

jme3-vr/src/main/java/com/jme3/input/vr/HmdType.java

@@ -12,6 +12,11 @@ public enum HmdType {
 	 */
     HTC_VIVE,
 
+    /**
+     * <a href="https://www.valvesoftware.com/en/index">Valve Index</a> Head Mounted Device (HMD).
+     */
+    VALVE_INDEX,
+
     /**
      * <a href="https://www3.oculus.com/en-us/rift/">Occulus Rift</a> Head Mounted Device (HMD).
      */

jme3-vr/src/main/java/com/jme3/input/vr/lwjgl_openvr/LWJGLOpenVR.java

@@ -421,6 +421,8 @@ public class LWJGLOpenVR implements VRAPI {
                 completeName = completeName.toLowerCase(Locale.ENGLISH).trim();
                 if( completeName.contains("htc") || completeName.contains("vive") ) {
                     return HmdType.HTC_VIVE;
+                } else if ( completeName.contains("index") ) {
+                    return HmdType.VALVE_INDEX;
                 } else if( completeName.contains("osvr") ) {
                     return HmdType.OSVR;
                 } else if( completeName.contains("oculus") || completeName.contains("rift") ||

jme3-vr/src/main/java/com/jme3/input/vr/openvr/OpenVR.java

@@ -556,6 +556,8 @@ public class OpenVR implements VRAPI {
                 completeName = completeName.toLowerCase(Locale.ENGLISH).trim();
                 if( completeName.contains("htc") || completeName.contains("vive") ) {
                     return HmdType.HTC_VIVE;
+                } else if ( completeName.contains("index") ) {
+                    return HmdType.VALVE_INDEX;
                 } else if( completeName.contains("osvr") ) {
                     return HmdType.OSVR;
                 } else if( completeName.contains("oculus") || completeName.contains("rift") ||