Graphics/Discussion/OpenGL ES/Stencil problem with devg-extreme2 on 82852GM/List of Posts
 
Forum Topic - Stencil problem with devg-extreme2 on 82852GM:
   
Update
Mike Gorchak
04/03/2009 1:48 PM
post26002
Stencil problem with devg-extreme2 on 82852GM   
Does devg-extreme2 supports hardware stencil operations ? I chose framebuffer config, which has RGBA8888 format with 24 
bit depth size and 8 bit stencil size (ID: 6).

My application works on ATI OpenGL ES emulator, QNX's software OpenGL ES implementation, but doesn't work on devg-
extreme2. The symptoms are as follows: stencil states and operations are completely ignored, there are no stencil buffer
 fillings  occured during rendering to stencil buffer.
Mike Gorchak
04/06/2009 4:56 AM
post26039
Re: Stencil problem with devg-extreme2 on 82852GM   
Does glGetFloatv(), which is present in the CM and CL OpenGL ES libraries, but not declared in the headers, works ?

Looks like I have a problem with this, by mistake I used glGetFloatv() function, which is not present in 1.0 OpenGL ES 
specification, to obtain modelview matrix content, but this function appears to be present in the library ...
Mike Gorchak
04/13/2009 6:51 AM
post26741
Re: Stencil problem with devg-extreme2 on 82852GM   
I got some free time to dig deeper into stencil problem. This is a port of http://www.zeuscmd.com/tutorials/opengles/25-
Reflections.php tutorial demo for QNX 6.4.x.

This demo shows that in QNX's OpenGL ES implementation stencil buffer is completely broken.

P.S. Is anyone here alive ? Almost 10 days without any comments ...
Attachment: Text stencil.tar.gz 17.03 KB
Mike Gorchak
04/13/2009 6:53 AM
post26742
Re: Stencil problem with devg-extreme2 on 82852GM   
Forgot to mention, that stencil in software OpenGL ES implementation is also broken, not only using devg-extreme2 driver
.
Mike Gorchak
05/06/2009 1:33 PM
post28840
Re: Stencil problem with devg-extreme2 on 82852GM   
My apologies, stencil works using software renderer, but on devg-extreme2 (on 6.4.0 and 6.4.1 M4) it is broken, now I've
 just a black screen when stencil is on.

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