Hello,
I need to access view projection matrix in my material, is it possible in any way?
Thanks in advance.
Not without using Custom nodes or special named parameters.
But there is a good chance you can accomplish what you want with the Transform nodes:
If you need something more flexible, you might want to consider writing USF shaders directly. But if you really need to, you can take a look at the source code for the Transform nodes (or other nodes that transform between coordinate spaces) to see how to access the view parameters in the material editor.
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Thanks for the answer, I’ll look into it, I need it for projected grid shader I think I can actually achieve it with Transform nodes you provided, thanks a lot again. 
I love you 
It’s an old post but, I leave a comment because I think There are still many people that search for this these days.
You can get view projection matrix using custom node and
ResolvedView.ViewToClip fuction.Return value is a matrix so, you should acces rows or elements with a array access expression. e.g.
ResolvedView.ViewToClip[0][0]
I think there are more matrix like that in engine code so, If I need I should search through engine code.
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Great help! 