[ShaderGraph] [2021.2] Adding anisotropic option

[cdxntchou]

Purpose of this PR

Backport to 2021.2 of:
Fix for: https://fogbugz.unity3d.com/f/cases/1367540/
Backport: https://fogbugz.unity3d.com/f/cases/1367746/

Backports:
2022.1: #5657
2021.2: #5801

Adding anisotropic option to the Sampler State node:

Docs ticket: https://jira.unity3d.com/browse/GSG-591

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Testing status

Before: (no anisotropic)

After: (x16)

Added yamato test to test inline anisotropic sampler state node:

Yamato:

Nightly ShaderGraph on 2021.2: 🟢
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fsg%252Fadd%252Fanisotropic/.yamato%252Fall-shadergraph.yml%2523Nightly_ShaderGraph_2021.2/8988874/job/pipeline

master: 34fcac4
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fstaging/.yamato%252Fall-shadergraph.yml%2523Nightly_ShaderGraph_2021.2/8988509/job/pipeline

• Note that the OSX metal results on the anisotropic sampling test are incorrect, but it appears to just be from the integrated GPUs on the farm machines not supporting anisotropic. Running on a "real" OSX machine locally, the results look correct.

URP: 🟡 -- failures match master
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fsg%252Fadd%252Fanisotropic/.yamato%252Fall-urp.yml%2523PR_URP_2021.2/9012128/job/pipeline

URP master:
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fstaging/.yamato%252Fall-urp.yml%2523PR_URP_2021.2/8982696/job/pipeline

failures: -- match master
URP_Lighting on Win_Vulkan_Standalone_mono_Linear on version 2021.2 -- failed same test : 202_SSAO_Depth 🟡

HDRP: 🟡 -- failures match master
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fsg%252Fadd%252Fanisotropic/.yamato%252Fall-hdrp.yml%2523PR_HDRP_2021.2/9012106/job/pipeline

HDRP master:
https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/2021.2%252Fstaging/.yamato%252Fall-hdrp.yml%2523PR_HDRP_2021.2/8982528/job/pipeline

failures: -- match master 🟡
HDRP on Linux_Vulkan_playmode_mono_Linear on version 2021.2 -- same 2 failed tests (after rerun) 🟡
HDRP on OSX_Metal_playmode_mono_Linear on version 2021.2 -- same 3 failed tests 🟡
HDRP on Win_Vulkan_playmode_mono_Linear on version 2021.2 -- same 2 failed tests 🟡
HDRP on Win_DX12_playmode_mono_Linear on version 2021.2 -- same 2 failed tests 🟡
HDRP on Win_DX11_playmode_XR_mono_Linear on version 2021.2 -- same 2 failed tests (after rerun) 🟡
HDRP on Win_DX11_playmode_mono_Linear on version 2021.2 -- same 2 failed tests 🟡

Console PR and Tests: 🟡
https://github.cds.internal.unity3d.com/unity/ScriptableRenderPipelinePrivate/pull/245

https://yamato.cds.internal.unity3d.com/jobs/339-ScriptableRenderPipelinePrivate/tree/2021.2%252Fstaging/.yamato%252Fall-shadergraph.yml%2523Nightly_ShaderGraph_2021.2/9040417/job/pipeline

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Comments to reviewers

Notes for the reviewers you have assigned.

[github-actions]

Hi! This comment will help you figure out which jobs to run before merging your PR. The suggestions are dynamic based on what files you have changed.
Link to Yamato: https://yamato.cds.internal.unity3d.com/jobs/902-Graphics
Search for your PR branch using the sidebar on the left, then add the following segment(s) to the end of the URL (you may need multiple tabs depending on how many packages you change)

Shader Graph
/.yamato%252Fall-shadergraph.yml%2523PR_ShaderGraph_2021.2
Depending on your PR, you may also want
/.yamato%252Fall-shadergraph_builtin_foundation.yml%2523PR_ShaderGraph_BuiltIn_Foundation_2021.2
/.yamato%252Fall-shadergraph_builtin_lighting.yml%2523PR_ShaderGraph_BuiltIn_Lighting_2021.2

Depending on the scope of your PR, you may need to run more jobs than what has been suggested. Please speak to your lead or a Graphics SDET (#devs-graphics-automation) if you are unsure.

[jessebarker]

LGTM

[xiaoxicici]

Tested in both URP and HDRP, this new control working as expected.
Testing material set in URP:

Testing materials in HDRP:

One comment I would like to mention is if having this option in the Node Settings only decreases the discoverability, comparing to the Filter and Wrap settings are configurable on the Sampler State node in the graph view:

[bencloward]

"One comment I would like to mention is if having this option in the Node Settings only decreases the discoverability, comparing to the Filter and Wrap settings are configurable on the Sampler State node in the graph view"

Chris moved the option here after Alex requested that change.