Bug 867 OSX [Common Code]: Trigger GLRendererQuirks.GL4NeedsGL3Request and make it sticky; Only alias profiles if HW-Accelerated!

Only alias profiles if HW-Accelerated!
GLContextImpl.mapGLVersions(..) shall not map a higher profile to a lower if it is a software renderer.

+++

GLContextImpl.mapGLVersions(..) attempts to trigger GLRendererQuirks.GL4NeedsGL3Request if OSX 10.9
by creating a GL3 core context first.

+++

GLContextImpl.setGLFunctionAvailability():
  - On OSX 10.9: Detect GLRendererQuirks.GL4NeedsGL3Request and make it sticky (per device)
    while 'withinGLVersionsMapping'

  - Merge sticky quirks w/ local quirks

+++

TestGearsES2NEWT: Add cmdline '-gl2' to force GL2 profile.

9 files changed, 148 insertions, 84 deletions

diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index 911a4c2be..241d5a217 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -828,6 +828,9 @@ public abstract class GLContextImpl extends GLContext {
     final int[] reqMajorCTP = new int[] { 0, 0 };
     getRequestMajorAndCompat(glCaps.getGLProfile(), reqMajorCTP);
 
+    if(DEBUG) {
+        System.err.println(getThreadName() + ": createContextARB: Requested "+GLContext.getGLVersion(reqMajorCTP[0], 0, reqMajorCTP[0], null));
+    }
     int _major[] = { 0 };
     int _minor[] = { 0 };
     int _ctp[] = { 0 };
@@ -835,9 +838,12 @@ public abstract class GLContextImpl extends GLContext {
     if( GLContext.getAvailableGLVersion(device, reqMajorCTP[0], reqMajorCTP[1],
                                         _major, _minor, _ctp)) {
         _ctp[0] |= additionalCtxCreationFlags;
+        if(DEBUG) {
+            System.err.println(getThreadName() + ": createContextARB: Mapped "+GLContext.getGLVersion(_major[0], _minor[0], _ctp[0], null));
+        }
         _ctx = createContextARBImpl(share, direct, _ctp[0], _major[0], _minor[0]);
         if(0!=_ctx) {
-            setGLFunctionAvailability(true, _major[0], _minor[0], _ctp[0], false);
+            setGLFunctionAvailability(true, _major[0], _minor[0], _ctp[0], false /* strictMatch */, false /* withinGLVersionsMapping */);
         }
     }
     return _ctx;
@@ -857,67 +863,95 @@ public abstract class GLContextImpl extends GLContext {
         // Even w/ PROFILE_ALIASING, try to use true core GL profiles
         // ensuring proper user behavior across platforms due to different feature sets!
         //
-        if(!hasGL4) {
+        if( Platform.OSType.MACOS == Platform.getOSType() &&
+            Platform.getOSVersionNumber().compareTo(Platform.OSXVersion.Mavericks) >= 0 ) {
+            /**
+             * OSX 10.9 GLRendererQuirks.GL4NeedsGL3Request, quirk is added as usual @ setRendererQuirks(..)
+             */
+            if( !hasGL4 && !hasGL3 ) {
+                hasGL3   = createContextARBMapVersionsAvailable(3, CTX_PROFILE_CORE);    // GL3
+                success |= hasGL3;
+                if( hasGL3 ) {
+                    final boolean isHWAccel = 0 == ( CTX_IMPL_ACCEL_SOFT & ctxOptions );
+                    if( isHWAccel && ctxVersion.getMajor() >= 4 ) {
+                        // Gotcha: Creating a '3.2' ctx delivers a >= 4 ctx.
+                        GLContext.mapAvailableGLVersion(device, 4, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                        hasGL4   = true;
+                        if(DEBUG) {
+                            System.err.println("Quirk Triggerd: "+GLRendererQuirks.toString(GLRendererQuirks.GL4NeedsGL3Request)+": cause: OS "+Platform.getOSType()+", OS Version "+Platform.getOSVersionNumber());
+                        }
+                    }
+                    resetStates(false); // clean this context states, since creation was temporary
+                }
+            }
+        }
+        if( !hasGL4 ) {
             hasGL4   = createContextARBMapVersionsAvailable(4, CTX_PROFILE_CORE);    // GL4
             success |= hasGL4;
-            if(hasGL4) {
-                // Map all lower compatible profiles: GL3
-                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                if(PROFILE_ALIASING) {
-                    hasGL3   = true;
+            if( hasGL4 ) {
+                if( 0 == ( CTX_IMPL_ACCEL_SOFT & ctxOptions ) ) {
+                    // Map hw-accel GL4 to all lower core profiles: GL3
+                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                    if( PROFILE_ALIASING ) {
+                        hasGL3   = true;
+                    }
                 }
                 resetStates(false); // clean context states, since creation was temporary
             }
         }
-        if(!hasGL3) {
+        if( !hasGL3 ) {
             hasGL3   = createContextARBMapVersionsAvailable(3, CTX_PROFILE_CORE);    // GL3
             success |= hasGL3;
-            if(hasGL3) {
+            if( hasGL3 ) {
                 resetStates(false); // clean this context states, since creation was temporary
             }
         }
-        if(!hasGL4bc) {
+        if( !hasGL4bc ) {
             hasGL4bc = createContextARBMapVersionsAvailable(4, CTX_PROFILE_COMPAT);  // GL4bc
             success |= hasGL4bc;
-            if(hasGL4bc) {
-                // Map all lower compatible profiles: GL3bc, GL2, GL4, GL3
-                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                if(!hasGL4) {
+            if( hasGL4bc ) {
+                if( !hasGL4 ) { // last chance .. ignore hw-accel
                     GLContext.mapAvailableGLVersion(device, 4, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                    hasGL4   = true;
                 }
-                if(!hasGL3) {
+                if( !hasGL3 ) { // last chance .. ignore hw-accel
                     GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                }
-                if(PROFILE_ALIASING) {
-                    hasGL3bc = true;
-                    hasGL2   = true;
-                    hasGL4   = true;
                     hasGL3   = true;
                 }
+                if( 0 == ( CTX_IMPL_ACCEL_SOFT & ctxOptions ) ) {
+                    // Map hw-accel GL4bc to all lower compatible profiles: GL3bc, GL2
+                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                    GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                    if(PROFILE_ALIASING) {
+                        hasGL3bc = true;
+                        hasGL2   = true;
+                    }
+                }
                 resetStates(false); // clean this context states, since creation was temporary
             }
         }
-        if(!hasGL3bc) {
+        if( !hasGL3bc ) {
             hasGL3bc = createContextARBMapVersionsAvailable(3, CTX_PROFILE_COMPAT);  // GL3bc
             success |= hasGL3bc;
-            if(hasGL3bc) {
-                // Map all lower compatible profiles: GL2 and GL3
-                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                if(!hasGL3) {
+            if( hasGL3bc ) {
+                if(!hasGL3) {  // last chance .. ignore hw-accel
                     GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
-                }
-                if(PROFILE_ALIASING) {
-                    hasGL2   = true;
                     hasGL3   = true;
                 }
+                if( 0 == ( CTX_IMPL_ACCEL_SOFT & ctxOptions ) ) {
+                    // Map hw-accel GL3bc to all lower compatible profiles: GL2
+                    GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                    if(PROFILE_ALIASING) {
+                        hasGL2   = true;
+                    }
+                }
                 resetStates(false); // clean this context states, since creation was temporary
             }
         }
-        if(!hasGL2) {
+        if( !hasGL2 ) {
             hasGL2   = createContextARBMapVersionsAvailable(2, CTX_PROFILE_COMPAT);  // GL2
             success |= hasGL2;
-            if(hasGL2) {
+            if( hasGL2 ) {
                 resetStates(false); // clean this context states, since creation was temporary
             }
         }
@@ -1022,7 +1056,7 @@ public abstract class GLContextImpl extends GLContext {
         _context = createContextARBImpl(share, direct, ctxOptionFlags, major[0], minor[0]);
 
         if(0 != _context) {
-            if( setGLFunctionAvailability(true, major[0], minor[0], ctxOptionFlags, true) ) {
+            if( setGLFunctionAvailability(true, major[0], minor[0], ctxOptionFlags, true /* strictMatch */, true /* withinGLVersionsMapping */) ) {
                 break;
             } else {
                 destroyContextARBImpl(_context);
@@ -1291,14 +1325,15 @@ public abstract class GLContextImpl extends GLContext {
    *
    * @param force force the setting, even if is already being set.
    *              This might be useful if you change the OpenGL implementation.
-   * @param major OpenGL major version
-   * @param minor OpenGL minor version
-   * @param ctxProfileBits OpenGL context profile and option bits, see {@link javax.media.opengl.GLContext#CTX_OPTION_ANY}
-   * @param strictMatch if <code>true</code> the ctx must
+ * @param major OpenGL major version
+ * @param minor OpenGL minor version
+ * @param ctxProfileBits OpenGL context profile and option bits, see {@link javax.media.opengl.GLContext#CTX_OPTION_ANY}
+ * @param strictMatch if <code>true</code> the ctx must
    *                    <ul>
    *                      <li>be greater or equal than the requested <code>major.minor</code> version, and</li>
    *                      <li>match the ctxProfileBits</li>
    *                    </ul>, otherwise method aborts and returns <code>false</code>.
+ * @param withinGLVersionsMapping TODO
    * @return returns <code>true</code> if successful, otherwise <code>false</code>. See <code>strictMatch</code>.
    *                 If <code>false</code> is returned, no data has been cached or mapped, i.e. ProcAddressTable, Extensions, Version, etc.
    * @see #setContextVersion
@@ -1306,7 +1341,8 @@ public abstract class GLContextImpl extends GLContext {
    * @see javax.media.opengl.GLContext#CTX_PROFILE_COMPAT
    * @see javax.media.opengl.GLContext#CTX_IMPL_ES2_COMPAT
    */
-  protected final boolean setGLFunctionAvailability(boolean force, int major, int minor, int ctxProfileBits, boolean strictMatch) {
+  protected final boolean setGLFunctionAvailability(boolean force, int major, int minor, int ctxProfileBits,
+                                                    boolean strictMatch, boolean withinGLVersionsMapping) {
     if(null!=this.gl && null!=glProcAddressTable && !force) {
         return true; // already done and not forced
     }
@@ -1322,7 +1358,7 @@ public abstract class GLContextImpl extends GLContext {
 
     final AbstractGraphicsConfiguration aconfig = drawable.getNativeSurface().getGraphicsConfiguration();
     final AbstractGraphicsDevice adevice = aconfig.getScreen().getDevice();
-
+    final int reqMajor = major, reqMinor = minor, reqCtxProfileBits = ctxProfileBits;
     {
         final boolean initGLRendererAndGLVersionStringsOK = initGLRendererAndGLVersionStrings();
         if( !initGLRendererAndGLVersionStringsOK ) {
@@ -1424,7 +1460,10 @@ public abstract class GLContextImpl extends GLContext {
         return false;
     }
     if (DEBUG) {
-        System.err.println(getThreadName() + ": GLContext.setGLFuncAvail: Post version verification "+GLContext.getGLVersion(major, minor, ctxProfileBits, null)+", strictMatch "+strictMatch+", versionValidated "+versionValidated+", versionGL3IntFailed "+versionGL3IntFailed);
+        System.err.println(getThreadName() + ": GLContext.setGLFuncAvail: Post version verification req "+
+                GLContext.getGLVersion(reqMajor, reqMinor, reqCtxProfileBits, null)+" -> has "+
+                GLContext.getGLVersion(major, minor, ctxProfileBits, null)+
+                ", strictMatch "+strictMatch+", versionValidated "+versionValidated+", versionGL3IntFailed "+versionGL3IntFailed);
     }
 
     if( major < 2 ) { // there is no ES2/3-compat for a profile w/ major < 2
@@ -1433,7 +1472,7 @@ public abstract class GLContextImpl extends GLContext {
 
     final VersionNumberString vendorVersion = GLVersionNumber.createVendorVersion(glVersion);
 
-    setRendererQuirks(adevice, major, minor, ctxProfileBits, vendorVersion);
+    setRendererQuirks(adevice, reqMajor, reqMinor, reqCtxProfileBits, major, minor, ctxProfileBits, vendorVersion, withinGLVersionsMapping);
 
     if( strictMatch && glRendererQuirks.exist(GLRendererQuirks.GLNonCompliant) ) {
         if(DEBUG) {
@@ -1550,7 +1589,10 @@ public abstract class GLContextImpl extends GLContext {
     return true;
   }
 
-  private final void setRendererQuirks(final AbstractGraphicsDevice adevice, int major, int minor, int ctp, final VersionNumberString vendorVersion) {
+  private final void setRendererQuirks(final AbstractGraphicsDevice adevice,
+                                       int reqMajor, int reqMinor, int reqCTP,
+                                       int major, int minor, int ctp, final VersionNumberString vendorVersion,
+                                       boolean withinGLVersionsMapping) {
     int[] quirks = new int[GLRendererQuirks.COUNT + 1]; // + 1 ( NoFullFBOSupport )
     int i = 0;
 
@@ -1577,7 +1619,17 @@ public abstract class GLContextImpl extends GLContext {
             }
             quirks[i++] = quirk;
         }
-
+        if( Platform.getOSVersionNumber().compareTo(Platform.OSXVersion.Mavericks) >= 0 && 3==reqMajor && 4==major ) {
+            final int quirk = GLRendererQuirks.GL4NeedsGL3Request;
+            if(DEBUG) {
+                System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: OS "+Platform.getOSType()+", OS Version "+Platform.getOSVersionNumber()+", req "+reqMajor+"."+reqMinor);
+            }
+            quirks[i++] = quirk;
+            if( withinGLVersionsMapping ) {
+                // Thread safe due to single threaded initialization!
+                GLRendererQuirks.addStickyDeviceQuirks(adevice, quirks, i-1, 1);
+            }
+        }
         if( isDriverNVIDIAGeForce ) {
             final VersionNumber osxVersionNVFlushClean = new VersionNumber(10,7,3); // < OSX 10.7.3 w/ NV needs glFlush
             if( Platform.getOSVersionNumber().compareTo(osxVersionNVFlushClean) < 0 ) {
@@ -1587,8 +1639,7 @@ public abstract class GLContextImpl extends GLContext {
                 }
                 quirks[i++] = quirk;
             }
-            final VersionNumber osxVersionNVGLSLGood = new VersionNumber(10,7,0); // < OSX 10.7.0 w/ NV has instable GLSL
-            if( Platform.getOSVersionNumber().compareTo(osxVersionNVGLSLGood) < 0 ) {
+            if( Platform.getOSVersionNumber().compareTo(Platform.OSXVersion.Lion) < 0 ) { // < OSX 10.7.0 w/ NV has unstable GLSL
                 final int quirk = GLRendererQuirks.GLSLNonCompliant;
                 if(DEBUG) {
                     System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: OS "+Platform.getOSType()+", OS Version "+Platform.getOSVersionNumber()+", Renderer "+glRenderer);
@@ -1732,6 +1783,11 @@ public abstract class GLContextImpl extends GLContext {
     }
 
     glRendererQuirks = new GLRendererQuirks(quirks, 0, i);
+    GLRendererQuirks.pushStickyDeviceQuirks(adevice, glRendererQuirks); // Thread safe due to single threaded initialization!
+    if(DEBUG) {
+        System.err.println("Quirks local: "+glRendererQuirks);
+        System.err.println("Quirks sticky on "+adevice+": "+GLRendererQuirks.getStickyDeviceQuirks(adevice));
+    }
   }
 
   private static final boolean hasFBOImpl(int major, int ctp, ExtensionAvailabilityCache extCache) {
@@ -1785,7 +1841,7 @@ public abstract class GLContextImpl extends GLContext {
     if(!drawable.getChosenGLCapabilities().getHardwareAccelerated()) {
         isHardwareRasterizer = false;
     } else {
-        isHardwareRasterizer = ! ( glRendererLowerCase.contains("software") /* Mesa3D  */ ||
+        isHardwareRasterizer = ! ( glRendererLowerCase.contains("software") /* Mesa3D, Apple */ ||
                                    glRendererLowerCase.contains("mesa x11") /* Mesa3D  */ ||
                                    glRendererLowerCase.contains("softpipe") /* Gallium */ ||
                                    glRendererLowerCase.contains("llvmpipe") /* Gallium */
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
index 3de910369..d8bb2e9eb 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
@@ -222,7 +222,9 @@ public class EGLContext extends GLContextImpl {
             throw new GLException("Error making context " +
                                   toHexString(contextHandle) + " current: error code " + toHexString(EGL.eglGetError()));
         }
-        return setGLFunctionAvailability(true, contextVersionReq, 0, CTX_PROFILE_ES, contextVersionReq>=3); // strict match for es >= 3
+        return setGLFunctionAvailability(true, contextVersionReq, 0, CTX_PROFILE_ES,
+                                         contextVersionReq>=3 /* strictMatch */, // strict match for es >= 3
+                                         false /* withinGLVersionsMapping */);
     }
 
     @Override
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLExternalContext.java b/src/jogl/classes/jogamp/opengl/egl/EGLExternalContext.java
index 4685e8bf1..d54a80ae3 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLExternalContext.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLExternalContext.java
@@ -45,7 +45,7 @@ public class EGLExternalContext extends EGLContext {
     public EGLExternalContext(AbstractGraphicsScreen screen) {
         super(null, null);
         GLContextShareSet.contextCreated(this);
-        setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_ES, false);
+        setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_ES, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
         getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
     }
 
diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
index d23d8a7e1..a2cf334ce 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXExternalCGLContext.java
@@ -63,7 +63,7 @@ public class MacOSXExternalCGLContext extends MacOSXCGLContext {
     setOpenGLMode(isNSContext ? GLBackendType.NSOPENGL : GLBackendType.CGL );
     this.contextHandle = handle;
     GLContextShareSet.contextCreated(this);
-    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false);
+    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
     getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsExternalWGLContext.java b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsExternalWGLContext.java
index 966a8b28a..95d7d8b82 100644
--- a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsExternalWGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsExternalWGLContext.java
@@ -64,7 +64,7 @@ public class WindowsExternalWGLContext extends WindowsWGLContext {
       System.err.println(getThreadName() + ": Created external OpenGL context " + toHexString(ctx) + " for " + this);
     }
     GLContextShareSet.contextCreated(this);
-    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false);  // use GL_VERSION
+    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
     getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
index d936308af..82be3e2b9 100644
--- a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsWGLContext.java
@@ -325,7 +325,7 @@ public class WindowsWGLContext extends GLContextImpl {
         if ( !WGL.wglMakeCurrent(drawable.getHandle(), temp_ctx) ) {
             throw new GLException("Error making temp context current: 0x" + toHexString(temp_ctx) + ", werr: "+GDI.GetLastError());
         }
-        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false);  // use GL_VERSION
+        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
         WGL.wglMakeCurrent(0, 0); // release temp context
 
         if( !createContextARBTried ) {
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
index ba88ff3c4..a04d1989d 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11ExternalGLXContext.java
@@ -63,7 +63,7 @@ public class X11ExternalGLXContext extends X11GLXContext {
     super(drawable, null);
     this.contextHandle = ctx;
     GLContextShareSet.contextCreated(this);
-    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false);
+    setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
     getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
   }
 
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
index 22a48e093..42bb6b964 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXContext.java
@@ -320,7 +320,7 @@ public class X11GLXContext extends GLContextImpl {
         if ( !glXMakeContextCurrent(display, drawable.getHandle(), drawableRead.getHandle(), contextHandle) ) {
           throw new GLException(getThreadName()+": Error making temp context(0) current: display "+toHexString(display)+", context "+toHexString(contextHandle)+", drawable "+drawable);
         }
-        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false); // use GL_VERSION
+        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
         isDirect = GLX.glXIsDirect(display, contextHandle);
         if (DEBUG) {
             System.err.println(getThreadName() + ": createContextImpl: OK (old-1) share "+share+", direct "+isDirect+"/"+direct);
@@ -350,7 +350,7 @@ public class X11GLXContext extends GLContextImpl {
         if ( !glXMakeContextCurrent(display, drawable.getHandle(), drawableRead.getHandle(), temp_ctx) ) {
           throw new GLException(getThreadName()+": Error making temp context(1) current: display "+toHexString(display)+", context "+toHexString(temp_ctx)+", drawable "+drawable);
         }
-        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false); // use GL_VERSION
+        setGLFunctionAvailability(true, 0, 0, CTX_PROFILE_COMPAT, false /* strictMatch */, false /* withinGLVersionsMapping */); // use GL_VERSION
         glXMakeContextCurrent(display, 0, 0, 0); // release temp context
         if( !createContextARBTried ) {
             // is*Available calls are valid since setGLFunctionAvailability(..) was called
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestGearsES2NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestGearsES2NEWT.java
index 74be176da..b54a2cd19 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestGearsES2NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestGearsES2NEWT.java
@@ -3,14 +3,14 @@
  *
  * Redistribution and use in source and binary forms, with or without modification, are
  * permitted provided that the following conditions are met:
- * 
+ *
  *    1. Redistributions of source code must retain the above copyright notice, this list of
  *       conditions and the following disclaimer.
- * 
+ *
  *    2. Redistributions in binary form must reproduce the above copyright notice, this list
  *       of conditions and the following disclaimer in the documentation and/or other materials
  *       provided with the distribution.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
@@ -20,12 +20,12 @@
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * 
+ *
  * The views and conclusions contained in the software and documentation are those of the
  * authors and should not be interpreted as representing official policies, either expressed
  * or implied, of JogAmp Community.
  */
- 
+
 package com.jogamp.opengl.test.junit.jogl.demos.es2.newt;
 
 import java.io.IOException;
@@ -70,7 +70,7 @@ import org.junit.FixMethodOrder;
 import org.junit.runners.MethodSorters;
 
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
-public class TestGearsES2NEWT extends UITestCase {    
+public class TestGearsES2NEWT extends UITestCase {
     static int screenIdx = 0;
     static PointImmutable wpos;
     static DimensionImmutable wsize, rwsize=null;
@@ -92,12 +92,13 @@ public class TestGearsES2NEWT extends UITestCase {
     static boolean forceES2 = false;
     static boolean forceES3 = false;
     static boolean forceGL3 = false;
+    static boolean forceGL2 = false;
     static boolean mainRun = false;
     static boolean exclusiveContext = false;
     static boolean useAnimator = true;
     static enum SysExit { none, testExit, testError, displayExit, displayError };
     static SysExit sysExit = SysExit.none;
-    
+
     @BeforeClass
     public static void initClass() {
         if(null == wsize) {
@@ -129,7 +130,7 @@ public class TestGearsES2NEWT extends UITestCase {
         final GearsES2 demo = new GearsES2(swapInterval);
         demo.setPMVUseBackingArray(pmvUseBackingArray);
         glWindow.addGLEventListener(demo);
-        
+
         final SnapshotGLEventListener snap = new SnapshotGLEventListener();
         glWindow.addGLEventListener(snap);
         if(waitForKey) {
@@ -154,7 +155,7 @@ public class TestGearsES2NEWT extends UITestCase {
             animator.setModeBits(false, Animator.MODE_EXPECT_AWT_RENDERING_THREAD);
             animator.setExclusiveContext(exclusiveContext);
         }
-        
+
         QuitAdapter quitAdapter = new QuitAdapter();
         //glWindow.addKeyListener(new TraceKeyAdapter(quitAdapter));
         //glWindow.addWindowListener(new TraceWindowAdapter(quitAdapter));
@@ -167,9 +168,9 @@ public class TestGearsES2NEWT extends UITestCase {
             }
             public void windowMoved(WindowEvent e) {
                 System.err.println("window moved:   "+glWindow.getX()+"/"+glWindow.getY()+" "+glWindow.getWidth()+"x"+glWindow.getHeight());
-            }            
+            }
         });
-        
+
         glWindow.addKeyListener(new KeyAdapter() {
             @Override
             public void keyPressed(final KeyEvent e) {
@@ -299,7 +300,7 @@ public class TestGearsES2NEWT extends UITestCase {
                                 throw new Error("test error send from GLEventListener");
                             } else if ( SysExit.displayExit == sysExit ) {
                                 System.err.println("exit(0) send from GLEventListener");
-                                System.exit(0);                                
+                                System.exit(0);
                             }
                         }
                     } else {
@@ -307,29 +308,29 @@ public class TestGearsES2NEWT extends UITestCase {
                     }
                 }
                 @Override
-                public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { }                    
+                public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { }
             });
         }
-        
+
         glWindow.setVisible(true);
         if( useAnimator ) {
             animator.setUpdateFPSFrames(60, showFPS ? System.err : null);
         }
-        
+
         System.err.println("NW chosen: "+glWindow.getDelegatedWindow().getChosenCapabilities());
         System.err.println("GL chosen: "+glWindow.getChosenCapabilities());
         System.err.println("window pos/siz: "+glWindow.getX()+"/"+glWindow.getY()+" "+glWindow.getWidth()+"x"+glWindow.getHeight()+", "+glWindow.getInsets());
-        
+
         snap.setMakeSnapshot();
 
         if( null != rwsize ) {
-            Thread.sleep(500); // 500ms delay 
+            Thread.sleep(500); // 500ms delay
             glWindow.setSize(rwsize.getWidth(), rwsize.getHeight());
             System.err.println("window resize pos/siz: "+glWindow.getX()+"/"+glWindow.getY()+" "+glWindow.getWidth()+"x"+glWindow.getHeight()+", "+glWindow.getInsets());
         }
-        
+
         snap.setMakeSnapshot();
-        
+
         final long t0 = System.currentTimeMillis();
         long t1 = t0;
         while(!quitAdapter.shouldQuit() && t1-t0<duration) {
@@ -341,7 +342,7 @@ public class TestGearsES2NEWT extends UITestCase {
                         throw new Error("test error send from test thread");
                     } else if ( SysExit.testExit == sysExit ) {
                         System.err.println("exit(0) send from test thread");
-                        System.exit(0);                                
+                        System.exit(0);
                     }
                 }
             }
@@ -371,13 +372,15 @@ public class TestGearsES2NEWT extends UITestCase {
                 glp = GLProfile.get(GLProfile.GLES3);
             } else if(forceES2) {
                 glp = GLProfile.get(GLProfile.GLES2);
+            } else if(forceGL2) {
+                glp = GLProfile.get(GLProfile.GL2);
             } else {
                 glp = GLProfile.getGL2ES2();
             }
             final GLCapabilities caps = new GLCapabilities( glp );
             caps.setBackgroundOpaque(opaque);
             if(-1 < forceAlpha) {
-                caps.setAlphaBits(forceAlpha); 
+                caps.setAlphaBits(forceAlpha);
             }
             runTestGL(caps, undecorated);
             if(loop_shutdown) {
@@ -389,7 +392,7 @@ public class TestGearsES2NEWT extends UITestCase {
     @Test
     public void test02_GLES2() throws InterruptedException {
         if(mainRun) return;
-        
+
         if( !GLProfile.isAvailable(GLProfile.GLES2) ) {
             System.err.println("GLES2 n/a");
             return;
@@ -398,11 +401,11 @@ public class TestGearsES2NEWT extends UITestCase {
         final GLCapabilities caps = new GLCapabilities( glp );
         runTestGL(caps, undecorated);
     }
-    
+
     @Test
     public void test03_GL3() throws InterruptedException {
         if(mainRun) return;
-        
+
         if( !GLProfile.isAvailable(GLProfile.GL3) ) {
             System.err.println("GL3 n/a");
             return;
@@ -411,13 +414,13 @@ public class TestGearsES2NEWT extends UITestCase {
         final GLCapabilities caps = new GLCapabilities( glp );
         runTestGL(caps, undecorated);
     }
-    
+
     public static void main(String args[]) throws IOException {
         mainRun = true;
-        
+
         int x=0, y=0, w=640, h=480, rw=-1, rh=-1;
         boolean usePos = false;
-        
+
         for(int i=0; i<args.length; i++) {
             if(args[i].equals("-time")) {
                 i++;
@@ -448,6 +451,8 @@ public class TestGearsES2NEWT extends UITestCase {
                 forceES3 = true;
             } else if(args[i].equals("-gl3")) {
                 forceGL3 = true;
+            } else if(args[i].equals("-gl2")) {
+                forceGL2 = true;
             } else if(args[i].equals("-wait")) {
                 waitForKey = true;
             } else if(args[i].equals("-mouseInvisible")) {
@@ -493,7 +498,7 @@ public class TestGearsES2NEWT extends UITestCase {
         if( 0 < rw && 0 < rh ) {
             rwsize = new Dimension(rw, rh);
         }
-        
+
         if(usePos) {
             wpos = new Point(x, y);
         }
@@ -502,11 +507,11 @@ public class TestGearsES2NEWT extends UITestCase {
         System.err.println("resize "+rwsize);
         System.err.println("screen "+screenIdx);
         System.err.println("translucent "+(!opaque));
-        System.err.println("forceAlpha "+forceAlpha);        
+        System.err.println("forceAlpha "+forceAlpha);
         System.err.println("undecorated "+undecorated);
         System.err.println("atop "+alwaysOnTop);
         System.err.println("fullscreen "+fullscreen);
-        System.err.println("pmvDirect "+(!pmvUseBackingArray));        
+        System.err.println("pmvDirect "+(!pmvUseBackingArray));
         System.err.println("mouseVisible "+mouseVisible);
         System.err.println("mouseConfined "+mouseConfined);
         System.err.println("loops "+loops);
@@ -514,10 +519,11 @@ public class TestGearsES2NEWT extends UITestCase {
         System.err.println("forceES2 "+forceES2);
         System.err.println("forceES3 "+forceES3);
         System.err.println("forceGL3 "+forceGL3);
+        System.err.println("forceGL2 "+forceGL2);
         System.err.println("swapInterval "+swapInterval);
         System.err.println("exclusiveContext "+exclusiveContext);
         System.err.println("useAnimator "+useAnimator);
-        System.err.println("sysExitWithin "+sysExit);        
+        System.err.println("sysExitWithin "+sysExit);
 
         if(waitForKey) {
             UITestCase.waitForKey("Start");