I don't know of a way to set up your own view matrix. What's it for? A7 already provides standard views with varying arcs, and isometric/orthogonal view modes. If you want to change the viewing angle all you have to do is rotate the view itself, not adjust the matrix.

Unless you have a much different sort of view in mind, I highly recommend playing with the view flags, view.arc, and doing what you can with the view itself (not the view's matrix). Those functions I've mentioned will make it easy to rotate the view's matrix by another matrix, or even just rotate the view with an axis-angle, but sadly that update isn't available just yet

The way I mentioned using the shaders was: pass your own matrix in the material.matrix, and use that in the vertex shaders instead of matWorldViewProj. The problem with that is that it doesn't change the view's frustum by which entities may be culled.

Jibb