Add a deferred rendering pipeline with support for multiple material - types

[kh-huawei]

What does this PR do?

This PR builds on PR 19231 from o3de.

This PR extends the sample RPI -> Mesh and implements a deferred rendering pipeline and material pipeline.

It uses a visibility buffer with one draw-call per mesh, and then renders the final image with one fullscreen draw-call per material-type (and shader options of the material). The sample viewer needs to be started with the cvar flag r_deferredMaterialRenderingEnabled set to true (e.g. by specifying r_deferredMaterialRenderingEnabled=true on the commandline), so the fullscreen draw-calls for the used material-types will be generated.

The pipeline does not use a Geometry buffer, but instead fetches the geometry data from the Mesh Buffers by using the MeshInfo - entries.

Skin Materialtype

The skin material-type was not implemented by the old deferred pipeline

Default Pipeline

Old deferred Pipeline

New Multimaterial deferred Pipeline

Material Canvas Emissive Material

Material canvas material that uses the world-position as emissive color. Using the world-position as base color would work, since the old deferred pipeline uses the EvaluateSurface - function of the material to determine the base color, it does not support any emissive color.

Default Pipeline

Old deferred Pipeline

New deferred Pipeline