From a68d8b50e31d9aceaee4a1dfba28e9c2a70b2cfc Mon Sep 17 00:00:00 2001
From: Riccardo Balbo <riccardo@forkforge.net>
Date: Mon, 27 May 2019 18:37:44 +0200
Subject: [PATCH] Add support for opengl versions > 3.2 in lwjgl2 renderer

---
 .../com/jme3/system/lwjgl/LwjglContext.java   | 60 +++++++++++++++++--
 1 file changed, 55 insertions(+), 5 deletions(-)

diff --git a/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglContext.java b/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglContext.java
index 6289637f3..624ad3e02 100644
--- a/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglContext.java
+++ b/jme3-lwjgl/src/main/java/com/jme3/system/lwjgl/LwjglContext.java
@@ -106,11 +106,61 @@ public abstract class LwjglContext implements JmeContext {
                     Display.getPixelScaleFactor()});
     }
 
+    protected int[] getGLVersion(String renderer) {
+        int maj = -1, min = -1;
+        switch (settings.getRenderer()) {
+            case AppSettings.LWJGL_OPENGL2:
+                maj = 2;
+                min = 0;
+                break;
+            // case AppSettings.LWJGL_OPENGL30:
+            // maj=3;
+            // min=0;
+            // break;
+            case AppSettings.LWJGL_OPENGL3:
+                // case AppSettings.LWJGL_OPENGL32:
+                maj = 3;
+                min = 2;
+                break;
+            case AppSettings.LWJGL_OPENGL33:
+                maj = 3;
+                min = 3;
+                break;
+            case AppSettings.LWJGL_OPENGL4:
+                // case AppSettings.LWJGL_OPENGL40:
+                maj = 4;
+                min = 0;
+                break;
+            case AppSettings.LWJGL_OPENGL41:
+                maj = 4;
+                min = 1;
+                break;
+            case AppSettings.LWJGL_OPENGL42:
+                maj = 4;
+                min = 2;
+                break;
+            case AppSettings.LWJGL_OPENGL43:
+                maj = 4;
+                min = 3;
+                break;
+            case AppSettings.LWJGL_OPENGL44:
+                maj = 4;
+                min = 4;
+                break;
+            case AppSettings.LWJGL_OPENGL45:
+                maj = 4;
+                min = 5;
+                break;
+        }
+        return maj == -1 ? null : new int[] { maj, min };
+    }
+
     protected ContextAttribs createContextAttribs() {
-        if (settings.getBoolean("GraphicsDebug") || settings.getRenderer().equals(AppSettings.LWJGL_OPENGL3)) {
+        int vers[] = getGLVersion(settings.getRenderer());
+        if (settings.getBoolean("GraphicsDebug") || (vers != null && vers[0] != 2)) {
             ContextAttribs attr;
-            if (settings.getRenderer().equals(AppSettings.LWJGL_OPENGL3)) {
-                attr = new ContextAttribs(3, 2);
+            if (vers != null && vers[0] != 2) {
+                attr = new ContextAttribs(vers[0], vers[1]);
                 attr = attr.withProfileCore(true).withForwardCompatible(true).withProfileCompatibility(false);
             } else {
                 attr = new ContextAttribs();
@@ -204,8 +254,8 @@ public abstract class LwjglContext implements JmeContext {
                     + "required for jMonkeyEngine");
         }
         
-        if (settings.getRenderer().equals(AppSettings.LWJGL_OPENGL2)
-                || settings.getRenderer().equals(AppSettings.LWJGL_OPENGL3)) {
+        int vers[] = getGLVersion(settings.getRenderer());
+        if (vers != null) {
             GL gl = new LwjglGL();
             GLExt glext = new LwjglGLExt();
             GLFbo glfbo;