Fix EGLConfig re-use w/ different EGLDisplay handle (Triggered w/ Mesa EGL/ES)

Reusing the native EGLConfig handle of another EGLDisplay is invalid,
hence the EGLCapabilities cfg-handle value shall be 'refreshed'
using the immutable cfg-id and the new EGLDisplay.

Also fix EGLError value in createSurface() exception
and don't override EGLCapabilities transparency value for a given EGLConfig ID.

4 files changed, 32 insertions, 17 deletions

diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLDrawable.java b/src/jogl/classes/jogamp/opengl/egl/EGLDrawable.java
index b54089d13..6ef016aa4 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLDrawable.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLDrawable.java
@@ -90,8 +90,9 @@ public abstract class EGLDrawable extends GLDrawableImpl {
         }
 
         eglSurface = createSurface(eglDisplay, eglConfig.getNativeConfig(), surface.getSurfaceHandle());
-        if (EGL.EGL_NO_SURFACE==eglSurface) {
-            final int eglError0 = EGL.eglGetError();
+        int eglError0 = EGL.EGL_SUCCESS; 
+        if (EGL.EGL_NO_SURFACE == eglSurface) {
+            eglError0 = EGL.eglGetError();
             if(EGL.EGL_BAD_NATIVE_WINDOW == eglError0) {
                 // Try window handle if available and differs (Windows HDC / HWND). 
                 // ANGLE impl. required HWND on Windows.
@@ -102,12 +103,15 @@ public abstract class EGLDrawable extends GLDrawableImpl {
                             System.err.println(getThreadName() + ": Info: Creation of window surface w/ surface handle failed: "+eglConfig+", error "+toHexString(eglError0)+", retry w/ windowHandle");
                         }
                         eglSurface = createSurface(eglDisplay, eglConfig.getNativeConfig(), nw.getWindowHandle());
+                        if (EGL.EGL_NO_SURFACE == eglSurface) {
+                            eglError0 = EGL.eglGetError();
+                        }
                     }
                 }
             }
         }
-        if (EGL.EGL_NO_SURFACE==eglSurface) {
-            throw new GLException("Creation of window surface failed: "+eglConfig+", "+surface+", error "+toHexString(EGL.eglGetError()));
+        if (EGL.EGL_NO_SURFACE == eglSurface) {
+            throw new GLException("Creation of window surface failed: "+eglConfig+", "+surface+", error "+toHexString(eglError0));
         }
 
         if(DEBUG) {
@@ -176,7 +180,15 @@ public abstract class EGLDrawable extends GLDrawableImpl {
                 AbstractGraphicsScreen s = new DefaultGraphicsScreen(e, aConfig.getScreen().getIndex());
                 final GLCapabilitiesImmutable capsRequested = (GLCapabilitiesImmutable) aConfig.getRequestedCapabilities();
                 if(aConfig instanceof EGLGraphicsConfiguration) {
-                    eglConfig  = new EGLGraphicsConfiguration(s, (EGLGLCapabilities)aConfig.getChosenCapabilities(), capsRequested, null);
+                    final EGLGLCapabilities capsChosen = (EGLGLCapabilities) aConfig.getChosenCapabilities();
+                    if(0 == capsChosen.getEGLConfig()) {
+                        // 'refresh' the native EGLConfig handle
+                        capsChosen.setEGLConfig(EGLGraphicsConfiguration.EGLConfigId2EGLConfig(eglDisplay, capsChosen.getEGLConfigID()));
+                        if(0 == capsChosen.getEGLConfig()) {
+                            throw new GLException("Refreshing native EGLConfig handle failed: "+capsChosen+" of "+aConfig);
+                        }
+                    }
+                    eglConfig  = new EGLGraphicsConfiguration(s, capsChosen, capsRequested, null);
                     if(DEBUG) {
                         System.err.println(getThreadName() + ": Reusing chosenCaps: "+eglConfig);
                     }
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLGLCapabilities.java b/src/jogl/classes/jogamp/opengl/egl/EGLGLCapabilities.java
index 2e1793d72..0ae597938 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLGLCapabilities.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLGLCapabilities.java
@@ -29,14 +29,13 @@
 package jogamp.opengl.egl;
 
 import javax.media.nativewindow.NativeWindowException;
-import javax.media.nativewindow.VisualIDHolder;
 import javax.media.opengl.GLCapabilities;
 import javax.media.opengl.GLException;
 import javax.media.opengl.GLProfile;
 
 
 public class EGLGLCapabilities extends GLCapabilities {
-  final private long eglcfg;
+  private long eglcfg;
   final private int  eglcfgid;
   final private int  renderableType;  
   final private int  nativeVisualID;
@@ -74,7 +73,8 @@ public class EGLGLCapabilities extends GLCapabilities {
       throw new GLException(e);
     }
   }
-
+  
+  final protected void setEGLConfig(long v) { eglcfg=v; }
   final public long getEGLConfig() { return eglcfg; }
   final public int getEGLConfigID() { return eglcfgid; }
   final public int getRenderableType() { return renderableType; }
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
index 35e30c5f4..9f9a7b9c4 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfiguration.java
@@ -73,19 +73,20 @@ public class EGLGraphicsConfiguration extends MutableGraphicsConfiguration imple
     }
 
     public static EGLGraphicsConfiguration create(GLCapabilitiesImmutable capsRequested, AbstractGraphicsScreen absScreen, int cfgID) {
-        AbstractGraphicsDevice absDevice = absScreen.getDevice();
+        final AbstractGraphicsDevice absDevice = absScreen.getDevice();
         if(null==absDevice || !(absDevice instanceof EGLGraphicsDevice)) {
             throw new GLException("GraphicsDevice must be a valid EGLGraphicsDevice");
         }
-        long dpy = absDevice.getHandle();
+        final long dpy = absDevice.getHandle();
         if (dpy == EGL.EGL_NO_DISPLAY) {
             throw new GLException("Invalid EGL display: "+absDevice);
         }
-        GLProfile glp = capsRequested.getGLProfile();
-        long cfg = EGLConfigId2EGLConfig(glp, dpy, cfgID);
-        EGLGLCapabilities caps = EGLConfig2Capabilities(glp, dpy, cfg, false, capsRequested.isOnscreen(), capsRequested.isPBuffer());
-        caps = (EGLGLCapabilities) GLGraphicsConfigurationUtil.fixOpaqueGLCapabilities(caps, capsRequested.isBackgroundOpaque()); // FIXME: valid to override EGL transparency ?
-        return new EGLGraphicsConfiguration(absScreen, caps, capsRequested, new DefaultGLCapabilitiesChooser());
+        final long cfg = EGLConfigId2EGLConfig(dpy, cfgID);
+        if(0 < cfg) {
+            final EGLGLCapabilities caps = EGLConfig2Capabilities(capsRequested.getGLProfile(), dpy, cfg, false, capsRequested.isOnscreen(), capsRequested.isPBuffer());
+            return new EGLGraphicsConfiguration(absScreen, caps, capsRequested, new DefaultGLCapabilitiesChooser());
+        }
+        return null;
     }
 
     @Override
@@ -106,7 +107,7 @@ public class EGLGraphicsConfiguration extends MutableGraphicsConfiguration imple
         }
     }
 
-    public static long EGLConfigId2EGLConfig(GLProfile glp, long display, int configID) {
+    public static long EGLConfigId2EGLConfig(long display, int configID) {
         int[] attrs = new int[] {
                 EGL.EGL_CONFIG_ID, configID,
                 EGL.EGL_NONE
@@ -365,7 +366,8 @@ public class EGLGraphicsConfiguration extends MutableGraphicsConfiguration imple
 
     @Override
     public String toString() {
-        return getClass().getSimpleName()+"["+getScreen()+", eglConfigID "+toHexString(getNativeConfigID())+
+        return getClass().getSimpleName()+"["+getScreen()+
+                                     ",\n\teglConfigHandle "+toHexString(getNativeConfig())+", eglConfigID "+toHexString(getNativeConfigID())+
                                      ",\n\trequested " + getRequestedCapabilities()+
                                      ",\n\tchosen    " + getChosenCapabilities()+
                                      "]";
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfigurationFactory.java b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfigurationFactory.java
index 2d9fc0227..aac7f5f85 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfigurationFactory.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLGraphicsConfigurationFactory.java
@@ -285,6 +285,7 @@ public class EGLGraphicsConfigurationFactory extends GLGraphicsConfigurationFact
             throw new GLException("Graphics configuration failed [direct caps, eglGetConfig/chooser and fixed-caps(1-3)]");
         }
         if(ownEGLDisplay) {
+            ((EGLGLCapabilities) res.getChosenCapabilities()).setEGLConfig(0); // eglDisplay: EOL 
             EGLDisplayUtil.eglTerminate(eglDisplay);
         }
         return res;