Multiple Pseudocolor Renderers/Plots will be executed in reverse

[nicolemarsaglia]

Having multiple plots that use pseudocolor will lead to a reverse in executed order in the scene. This is because we force mesh and volume renderers to be executed last, and pseudocolor plots get pushed to the front:

ascent/src/libs/vtkh/rendering/Scene.cpp

Line 120 in 7dc99cd

m_renderers.push_front(renderer);

ascent_actions_logdensity_over_pressure.yaml

This can lead to confusing color bar associations with pipelines that are not executed in reverse order in the Scene.

Current workaround is to force the color_par_position

ascent_actions_logdensity_over_pressure.yaml

Here are the 4 default color bar positions:

viskores::Bounds p1(viskores::Range(0.84, 0.92), viskores::Range(+0.1, +0.8), viskores::Range(0, 0));
viskores::Bounds p2(viskores::Range(0.84, 0.92), viskores::Range(-0.8, -0.1), viskores::Range(0, 0));
viskores::Bounds p3(viskores::Range(-0.8, -0.72), viskores::Range(+0.1, +0.8), viskores::Range(0, 0));
viskores::Bounds p4(viskores::Range(-0.8, -0.72), viskores::Range(-0.8, -0.1), viskores::Range(0, 0));

[nicolemarsaglia]

Or reverse order of the pipelines in the actions file:

ascent_actions_rev_order.yaml