Hello Alexander,
On 09/13/2012 07:46 AM, Alexander Lang wrote:
> I looked at the code of the RenderPartition class and the
> OSG::RenderPartition::setupExecution() function calls
> _pBackground->clear(&_oDrawEnv); if the RenderPartition::BackgroundSetup
> flag is set. Therefore i tried:
>
> DepthPeelingStage::renderEnter()
> {
> //init setup similar to HDRStage implementation
>
> pPart->setRenderTarget(<myFBO>);
>
> pPart->setBackground(pBack);
>
> pPart->addSetupModeBit(RenderPartition::BackgroundSetup);
>
> //if not first pass pushState() and add stage overrides here
>
> recurseFromThis(renderAction);
>
> //popState(), popPartition(), schedule postProcess, etc.
> }
> But this shows no effect i.e. the contents is still not cleared. Any idea?
hmm, the above looks ok to me and also after looking into
RenderPartition::setupExecution() I see no additional settings that
should be necessary. I'm afraid my only advice is to run under a
debugger and step through setupExecution() to find out why it does not
call the background's clear().
> Regarding the EXT_shader_image_load_store extension it requires OpenGL 3.0
> and GLSL 1.30 unfortunately, see
> http://developer.download.nvidia.com/opengl/specs/GL_EXT_shader_image_load_store.txt
> Can i still use the mechanism you described for getting the function pointer?
I *think* so, but Gerrit has been doing some work in that area to
support the various OpenGL flavours (ES, core, compatibility), so I'm
not fully up to date on how this works, let's ask him:
@Gerrit: What's the correct way to get a core function/core extension
and which of the OSGGETGLFUNCBYID_* functions need to be used? Thanks!
Cheers,
Carsten
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