textures - Unity – How to keep sprites sharp and crisp, even while rotating

None of the things I've tried produce a pixel-perfect non-rotated block, while allowing rotation without aliasing

Click here for the sample project, which also has some extra images in it.

Click here for my Unity Forums Thread

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Ideally, this is what it would look like

From Photoshop, not Unity.

• Flawless edges, smooth corners, and very faint aliasing when rotated.

Screenshot from Github project:

Row 1

Non-rotated: Perfect edges, pixelated corners

Rotated: Pixelated everywhere

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Row 2

Non-rotated: Perfect edges, smooth corners.

Rotated: Pixelated edges, smooth corners

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Row 3

Non-rotated: Blurry everywhere.

Rotated: Blurry everywhere

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Row 4

Non-rotated: Not quite perfect edges, pixelated corners

Rotated: Blurry everywhere

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Row 5 (MY BEST SOLUTION SO FAR)

Non-rotated: Semi-blurry everywhere.

Rotated: Semi-blurry everywhere

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Texture for "no border padding" texture:

Texture for "with padding" texture:

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(Note: I'm a total shader newbie)

I created a fragment shader to draw the block.

It has AA (via smoothstep) built in, and throttles it on as block is rotated (so that there is no AA when it's not rotated)

This has some problems:

1. 
   

   A (geometry) shader doesn't seem like the correct solution for this problem at all, since I'd have to make a shader for all the geometry that has this problem.

   
   
   
   
   • But maybe there is a shader that can apply AA to a texture, that doesn't do anything for vertical or horizontal (non-rotated) edges?
   
   
   
   


2. 
   

   Corners of block with AA turned off are pixelated

   
   
   
   
   • This doesn't seem too difficult to fix
   
   
   
   • I'd probably want it to work identically to row 2 (non-rotated)
   
   
   
   


3. 
   

   Not sure how much AA to apply (when rotated) so that it's as sharp as possible for a given screen DPI.

   
   
   
   
   • I thought this is what mip maps were good for, since the highest possible res texture should be chosen. (Another reason why a texture-based solution seems best)
   
   
   
   

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Vector graphics (per Unity's vector package)

• Unity's vector package required 4x MSAA to look right, which was too intensive for mobile devices

MSAA

• Creates blurry graphics (is there a way around this?)