Set the rendering order

[jacky-wang7]

hi!
I have two models that are partially overlapping.
I want one model to always appear on top of the other.
How can I set the order of rendering in VSG or how can I achieve the above function?

[robertosfield]

The VSG records vsg::Command nodes to vsg::/vkCommandBuffer in the order they are traversed, so just put them in a vsg::Group in the order you want them ordered.

If you want high level ordering, for techniques such as render to texture, then you can start looking a vsg::CommandGraph::submitOrder.

$ grep -r submitOrder .
./examples/state/vsgdynamictexture_cs/vsgdynamictexture_cs.cpp:            compute_commandGraph->submitOrder = -1; // make sure the compute_commandGraph is placed before the graphics_commandGraph when it's submitted to the VkQueue.
./examples/app/vsgrendertotexture/vsgrendertotexture.cpp:        rtt_commandGraph->submitOrder = -1; // render before the main_commandGraph
./examples/app/vsgrendertotexture/vsgrendertotexture.cpp:        rtt_commandGraph->submitOrder = -1; // render before the main_commandGraph
./examples/app/vsgrendertotexturearray/vsgrendertotexturearray.cpp:    results_commandGraph->submitOrder = 1;
./examples/app/vsgrendertotexturearray/vsgrendertotexturearray.cpp:    main_commandGraph->submitOrder = 0;
./examples/app/vsgrendertotexturearray/vsgrendertotexturearray.cpp:        rtt_commandGraph->submitOrder = -1;            // render before the main_commandGraph
./examples/app/vsgoffscreenshot/vsgoffscreenshot.cpp:    offscreenCommandGraph->submitOrder = -1; // render before the displayCommandGraph

The VSG allows you to nest CommandGraph and set their orders so -ve submitOrder get run first, then nested commands, then +ve get rendered next.