Hello Carsten,
I'm playing around with the DepthPeelingStage and have written a simple
example. For that I have taken the testDepthPeeling.cpp and merged it with the
shaderstoragebufferobject_std430.cpp example. I have done this because I would
like to have an example that uses transparent and opaque geometry and that uses
the more elaborate shader code. The example is working somehow, but what I do
not get right so far, is that the transparent geometry is correctly blended
with the opaque geometry.
In extension to the attached example I also added the following code lines into
the example:
geom1_state->setTransparencyMode(OSG::Material::TransparencyForceTransparent);
...
geom6_state->setTransparencyMode(OSG::Material::TransparencyForceTransparent);
This, however does also not bring the desired correct rendering.
Is it even possible to mix opaque and transparent geometry with the
DepthPeelingStage core or is the stage incomplete with respect to that task?
How do I have to handle the task of differing actions with respect to
transparency in a stage implementation at all?
How is blending of transparent and opaque rendering performed in the common
case?
Could you please take a look into the example and give me some hint what I'm
doing wrong here?
Additionally, I have tried to setup the HDR2 stage above of the DepthPeeling
stage in another example. With that I do not get any rendering. If I replace
the HDR2 stage or the DepthPeeling stage by a simple Group core I got the
expected rendering for the particular stage. Do you have any idea what is
missing in that scenario where both stages are active?
Best,
Johannes
P.S. I have send you a Cc because I expect the mailing list to have trouble
with the example attachment, sorry for that.
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