Pixel Perfect UI

[Myonmu]

I would like to suggest to add pixel perfectness to the Nova UI, or a guideline to set it up if this is somehow already feasable.

Let's observe the behavior of pixel perfect sprites (aka, non UI images), under the URP Pixel Perfect Camera (Experimental), with the Pixel Snapping option on the Pixel Perfect Camera enabled:

• 2 superposing sprites, each are imported correctly and set to 16 PPU. Each pixel of the sprites should align.
  
• The previous property should not broke in Game view when the position of a sprite is set to non-integer value (pixel snapping)
  
  in editor view, this can broke, since the editor view is not rendered with the Pixel Perfect Camera.
• When resolution changes, the 2 previous properties should not broke.
• When rotating a sprite, the alignment should not broke when Upscale Render Texture is enabled on the Pixel Perfect Camera
  

With the previous behaviors in mind, we could extend these behaviors to UI

UI pixels (images and texts) should also align with other pixels, whether it is UI or non UI sprites, and for different resolutions. Translation should not affect this snapping behavior.
Currently pixel snapping does not work when Pixel Snapping is enabled on the Pixel Perfect Camera.
(For now, pixel snapping seem to work for UI if Upscale Render Texture is enabled. But this mode causes pixels in texts (TMP) to disappear, as shown below)

Personally, I am OK with sprites snapping but text non-snapping (actually I may prefer this way). I (currently) don't care much about rotation, as there won't be any.

[Norimoo]

I second this. A pixel perfect option to be added on the root UIBlock, maybe on the screenspace component, would do a lot.
Clamping size and position values to match the grid would also avoid sub-pixels that will ultimately look blurry once upscaled.

Example of how the UI may look when upscaled with sub-pixel values.