antonmic

> It is not specific to this PR, but maybe it's a good place to solve it. Would it be possible to compute the diffuse and specular components through `GetDiffuseLighting(...)`...

Talking to @AMZN-alexpete about the RosCon demo, on his linux machine (so with the vulkan RHI backend) the editor was running an empty level with a few objects at 61...

In this doc: https://github.com/o3de/sig-graphics-audio/blob/main/rfcs/SubpassesSupportInRPI/RFC_SubpassesSupportInRPI.md There's this sentence which appears to have a typo: "The example aboved worked fine because VkRenderPassC was compatible with VkRenderPassA, and VkRenderPassD was compatible with ShaderPSOB."