feat: Removal of useless GraphicsApi - Null

[Jklawreszuk]

PR Details

I tried to revisit the Stride.Graphics project and among Graphics Apis there is a StrideGraphicsAPI called Null, which does nothing and is just a placeholder for other APIs. In addition, from what I understand the value of Null for StrideGraphicsApi msbuild property is never set, so I propose to remove this completely.

Related Issue

Types of changes

• [x] Refactoring
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [ ] My change requires a change to the documentation.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.
• [ ] I have built and run the editor to try this change out.

[Basewq]

As someone who had been thinking of client/server game a while back, I wasn't aware there was a null api option. Are you sure this can't be used for headless server? Proper headless mode is one feature Stride is actually missing.

[Jklawreszuk]

@Basewq After doing this PR, I’m also thinking about it. I found, in Xenko 3.0.0.6 or older there was a file setting Null https://github.com/stride3d/strideide/b/releases/3.0.0.6/build/Xenko.Null.PreSettings.Local.targets. Xen then tried to simplify the api setting and deleted the file, but nowhere sets Null value (commit: https://github.com/stride3d/stride/commit/784b9c988f8970feef94e0fcd74098396d4d169a). @xen2, was that intentional?

[Kryptos-FR]

I think we should keep it, especially if we want to have a headless version. It's possible that the work to have a fully functional headless is not complete, and that code would be a good start.

[Jklawreszuk]

Since there are no more comments I am closing the PR now