Stencil buffer problem

[Loicus]

Dear all,

I am trying to use the stencil buffer for the first time,
and my test is not really succesfull so far...

Here is the code I've been added in my "init" function. I am working in Java with JOGL, but I don't think that this is the issue.
After this code, I would expect that nothing can be drawn on my screen..., since:
1) I clear the buffer with "1"
2) I use the glStencilFunc with GL_NEVER.

[SIZE=2] gl.glEnable(GL2[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_STENCIL_TEST[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2]);[/SIZE]
[SIZE=2]
gl.[U]glClearStencil[/U](0x1);
 
gl.glClear(GL2.
[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_STENCIL_BUFFER_BIT[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2]);	    [/SIZE]
[SIZE=2]
gl.glStencilFunc(GL2.
[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_NEVER[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], 0x1, 0x1);	    [/SIZE]
[SIZE=2]
gl.glStencilOp(GL2.
[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_KEEP[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], GL2.[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_KEEP[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], GL2.[/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]GL_KEEP[/COLOR][/SIZE][/COLOR][/SIZE][/I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2]);[/SIZE]

Unfortunately, I can change whatever I want to the stencil function,
I always have all my objects being displaied on screen.
What am I missing ?

Thanks for help,
Loic

[Loicus]

never mind,
it seems that the problem is due to the fact that I can not create a canvas with simultaniously the Stencil buffer and the Stereo (Quard) Buffers
If I disable the Stereo flag, it works fine