On 12/19/2012 07:19 PM, InteractiveMesh [via jogamp] wrote:
> I. AWT / Mac OS X : onscreen
>
> When calling "GraphicsConfigurationFactory.chooseGraphicsConfiguration(... ,
> CapabilitiesChooser chooser, ...)" my chooser's chooseCapabilities-method is
> invoked on Linux and Windows but never on Mac. A look into the Mac related
> sources confirms that the chooser doesn't seem to be called.
>
> Do I have to repeat the call "chooseGraphicsConfiguration" with different
> capabilties until the returned AWTGraphicsConfiguration has the
> (approximately) appropriate capabilties?
>
> II. all platforms : offscreen (FBO, pbuffer)
>
> When creating an offscreen GLDrawable by calling
> GLDrawableFactory.createOffscreenDrawable(..., GLCapabilitiesChooser chooser,
> ...) my chooser is neither invoked. The sources seem to confirm this also.
>
> Is repeatedly calling the solution here as well?
In case FBO backend/impl. is being used, you are right,
the 'final' GLCaps.. after context has been made current is determined
by GLFBODrawableImpl/FBObject - fixed code.
Reason is that there is not much room for selecting the GLCaps..,
just the DEPTH/STENCIL and MSAA bits - and we choose the nearest or best avail.
We could impl. using a chooser, but I am not sure whether this makes much sense.
The only valid choice comes to mind though would be of the MSAA bits .. hmm.
+++
For pbuffer the chooser shall be invoked, since we follow the
normal pattern of 'visual' selection here.
However, to enforce pbuffer w/ createOffscreen*(..) you have to
make some settings to the requested GLCaps (fbo=false, pbuffer=true).
In case this is an offscreen CALayer of OSX, you also have to set onscreen=true
afterwards - this 'magic' is used in the unit tests within TestGLAutoDrawableNewtCanvasAWTOnOffscrnCapsAWT.
~Sven
>
> August
>