[osg-submissions] RenderStage - Stencil Buffer is missing (patch)

[Robert Osfield]

HI Art,

I'm afraid you've misread the code, the stencil buffer is supported,
but if one isn't requested then there is no need to add one.  So the
code you have added is not necessary at all.

One may also question on whether newer drivers actually require both
of the a colour buffer and depth buffer, and this is what the fallback
statements for the depth and colour buffers do - its these that you
have copied.  After 2.4 we can look into relaxing the fallbacks for
depth and colour but so close to a release I'm not prepared to go
experimenting with potentially breaking changes.

Robert.

On Thu, Apr 24, 2008 at 11:42 PM, Art Tevs <stud_info2 at yahoo.de> wrote:
> Hi Robert,
>
>  just before the v2.4, there is one line missing in the
>  current RenderStage.cpp.
>
>  In the method runCameraSetup the setup for stencil
>  buffer is missing. You can see that between the lines
>  350-359 the stencil attachmetn is missing. I have
>  attached a patched file. Take a look. I haven't tested
>  stencil attachment at all, hence I can not be sure if
>  there is anything missing.
>
>  Even more, there are some extensions around, which
>  enables depth buffer and stencil to be attached into
>  one RenderBuffer, something like GL_DEPTH_STENCIL_EXT
>  or  GL_DEPTH24_STENCIL8_EXT. I think if we provide the
>  stencil attachmetn support, then we have to think on
>  this extensions too. It would be nice if somebody
>  could test stencil implementation as it is and provide
>  a patch which includes all this functionality.
>
>
>  Best regards,
>  Art
>
>
>
>
>
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