Bug 925 - Accept an ES3 Context, if reported via GL-Version-String w/o EGL_OPENGL_ES3_BIT_KHR

Add Quirk 'GLES3ViaEGLES2Config': ES3 Context is used via EGL_OPENGL_ES2_BIT and 'version 2' for create context attributes.

- GLContextImpl.setGLFunctionAvailability(..)'s ES version validation
  only fails if requested major version == 1 and doesn't match.
  Hence requesting major==2 and having version 3 is tolerated.

- GLContextImpl.setGLFunctionAvailability(..)'s Quirks:
    requested-major < has-major -> Adding GLES3ViaEGLES2Config

- EGLDrawableFactory.mapAvailableEGLESConfig(..):
  Reflects has-major version, i.e. GLES3ViaEGLES2Config situation where
  an ES2 request leads to an ES3 version.

Note: All workarounds can be found via lookup of GLES3ViaEGLES2Config (as usual when using quirks).

1 files changed, 6 insertions, 1 deletions

diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
index b2f06dce6..967b88358 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
@@ -44,6 +44,7 @@ import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.AbstractGraphicsDevice;
 import javax.media.opengl.GLCapabilitiesImmutable;
 import javax.media.opengl.GLContext;
+import javax.media.opengl.GLDrawableFactory;
 import javax.media.opengl.GLException;
 import javax.media.opengl.GLProfile;
 
@@ -187,7 +188,11 @@ public class EGLContext extends GLContextImpl {
         {
             if ( glProfile.usesNativeGLES3() ) {
                 contextVersionReq = 3;
-                contextVersionAttr = 3;
+                if( GLRendererQuirks.existStickyDeviceQuirk( GLDrawableFactory.getEGLFactory().getDefaultDevice(), GLRendererQuirks.GLES3ViaEGLES2Config) ) {
+                    contextVersionAttr = 2;
+                } else {
+                    contextVersionAttr = 3;
+                }
             } else if ( glProfile.usesNativeGLES2() ) {
                 contextVersionReq = 2;
                 contextVersionAttr = 2;