Bug 929

Summary:	Reflect ES3 Compatibility with ES2
Product:	[JogAmp] Jogl	Reporter:	Sven Gothel <sgothel>
Component:	core	Assignee:	Sven Gothel <sgothel>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	gouessej, julien.carlos, org.jogamp, rami.santina, sgothel, xerxes
Priority:	---
Version:	2
Hardware:	All
OS:	all
Type:	---	SCM Refs:	3d0ab3e6263dfdbb9dd0014443ad28b1c9b0c238 ac705f0d6eea7c8ba27a7cf7c42674c7446576b4
Workaround:	---
Bug Depends on:
Bug Blocks:	852

Description Sven Gothel 2013-12-21 15:13:24 CET

Reflect ES3 Compatibility with ES2.

F1 p322 of the OpenGL ES 3.0.2 Spec claims backward compatibility with ES2,
hence return true for 'glES3.isGLES2()' and allow 'glES3.getGLES2()'.

Comment 1 Sven Gothel 2013-12-21 15:21:45 CET

Current situation w/ ES3 implementers is that either ES3 or ES2 is available,
hence EGLDrawableFactory shall not query ES2 if ES3 is available.

Since ES3 seems to be also fully compatible w/ ES2, the above behavior is OK
and aligns to our ARB ctx GL profile aliasing.

Note: 
  - ES4 will not be compatible w/ ES2.
  - ES4 will drop 'deprecated' functionality of ES3
    and hence will not be compatible w/ ES3.

Comment 2 Sven Gothel 2013-12-21 22:06:44 CET

3d0ab3e6263dfdbb9dd0014443ad28b1c9b0c238
    - Map ES2 -> ES3 GLProfile, if available
    
    - EGLDrawableFactory: Don't query ES2 if ES3 is available
    
    - Fix queries and get methods (GL, GLContext and GLProfile):
      - glES3.isGLES2()==true and glES3.getGLES2()!=null
      - ctxES3.isGLES2()==true,
      - glES3Profile.isGLES2()==true
    
    - Enhance Unit test: TestGLProfile01NEWT
      - Test all GLProfile availability combinations
        based on implementing GLProfile
    
      - Test all GLProfile's isGL*()
        based on highest GLProfile identity
    
      - Test all GL's isGL*()
        based on highest GL identity.

Comment 3 Sven Gothel 2013-12-22 03:31:56 CET

ac705f0d6eea7c8ba27a7cf7c42674c7446576b4
  See Bug 852 Comment 8