[Interest] Qt3D filtering for different renderviews

[Juan José Casafranca]

Hi,

Im building a simple default viewer using Qt3D for a design tool. I'm trying 
to add a typical gradient background and for that I'm using the following 
approach.

I have create a custom framegraph with 2 renderviews.
The first renderview clears the buffers, select an ortographic camera and have 
a layerfilter (background). 
The second renderview is the default forwardrenderer framegraph but I have 
change the clearbuffers to DepthBuffer only so it doesn't delete the 
background. 

The framegraph works fine, but I'm having a little issue. The background is a 
QPlaneMesh where I have added a color attribute so I can use the 
QPerVertexColorMaterial and the background layer so it's the only entity 
viewed by the first renderview. But the second renderview also see this entity 
and is painting it. 

How can I make the second renderview to skip the background entity? I have 
tried to add a LayerFilter for it, but that way I have to add a Layer 
component to each object in my scene, which is not practical. 

Any idea?

Thanks!!