ATOM-14040 Add Support for Cavity Maps
Replace the "Ambient Occlusion" property groups with "Occlusion" property groups that contain settings for "Diffuse AO" and "Specular Cavity" maps.
Pre-multiplied diffuseAmbientOcclusion into the m_albedo.rgb gbuffer, making room for specularOcclusion to be stored in m_albedo.a
Added new render pipeline connections to connect the albedo gbuffer to the fullscreen reflection passes.
Also fixed ATOM-15297 "StandardPBR_ForwardPass.shadervariantlist Job Fails With Obscure Error"
Note there were significant conflicts in LightingModel.azsli and StandardPBR_ForwardPass.azsl. I only did basic resolves of these conflicts, mostly preserving the changes from main and distarding the changes in the local branch. The shaders are not compiling at this point, and of course the tests are not passing. I will fix up the code to make corrections in a separate commit, to make it easier to review those changes separate from this merge.
Added new input attachment to the fullscreen reflection pass to receive the "ambient" gbuffer.
Added diffuse and specular occlusion to the Skin material type; it was missing before.
ATOM-14040 Add Support for Cavity Maps
Testing:
AtomSampleViewer automation, with updates that will be submitted in that repo.
Manual testing in Material Editor.
Built all AtomTest assets and opened a few test levels, with updates that will be submitted in that repo.
Made local copies of the occlusion test materials and changed replaced the material types with EnhancedPBR and Skin, and got identical results (with clear coat disabled since it works different in EnhancedPBR and is absent in Skin).
Remove option from presets
Updated code to select current default options
Will data drive default options with editor settings or settings registry in upcoming tasks
https://jira.agscollab.com/browse/ATOM-13950
mnaumov
Chris Santora
mrieggeramzn
greerdv
mriegger
greerdv
Chris Santora
guthadam
AMZN-mnaumov
Alex Peterson
alexpete
pruiksma