Jeremy Ong
61f915366a
The purpose of this shader refactor is to split various material type shaders into disparate pieces: 1. The original material type shaders now include an external file with the actual shader entry points and structure of the algorithm (e.g. depth pass, shadow pass, forward pass) but continue to specify the SRGs used 2. Common functionality used across multiple shaders was consolidated into routines implemented in the MaterialFunctions folder (Materials/Types/MaterialFunctions) 3. The implementation shaders rely on common routines to be included/imported prior to inclusion, and by design, make no references to any Draw, Object, or Material SRG. This refactor only includes the Standard and Enhanced material types, and is, for the most part, a non-functional change. However, the Surface definition needed to be augmented to include information needed by lighting later. Modifying the Surface structure enables the lighting loops to avoid any references to the Material SRG. This completes the decoupling needed to support future Material canvas work, as well as a future Material pipeline abstraction (where by the implementation shaders can be injected by the user, customized per platform, and in general, are simply decoupled from the materials themselves). Signed-off-by: Jeremy Ong <jcong@amazon.com>