Any antialiasing when a sprite is scaled up at 2x?

[aleb]

In a 2D Bevy app we place SpriteBundles which are scaled 2x. Will each pixel result in 4 pixels of exactly the same color? Does antialiasing take place?

  let FACTOR: f32 = 2.0;

  commands
      .spawn_bundle(SpriteBundle {
          texture: asset,
          transform: Transform {
              scale: Vec3::ONE * FACTOR,
              ..Default::default()
          },
          ..Default::default()
      });

I believe this might be relevant―we're using the following startup system:

    commands.spawn_bundle(UiCameraBundle::default());
    commands.spawn_bundle(OrthographicCameraBundle::new_2d());

[superdump]

The Image Asset has a SamplerDescriptor that you can configure. By default it looks like it will do no filtering for minification/magnification, ie nearest neighbour.

[aleb]

image.sampler_descriptor.mag_filter = FilterMode.NEAREST

https://github.com/bevyengine/bevy/blob/release-0.6.1/crates/bevy_render/src/texture/image.rs#L29
https://github.com/gfx-rs/wgpu/blob/v0.12/wgpu/src/lib.rs#L1193
https://github.com/gfx-rs/wgpu/blob/v0.12/wgpu-types/src/lib.rs#L3078

[superdump]

Exactly.

One thing I did note after posting this was the the glTF loader will configure the samplers according to glTF defaults / whatever is specified in the glTF model.