AGK for Pascal
TAgkApplication.DefaultMagnificationFilter Property

Sets the default filter for textures when the texture is larger than the screen space it is displayed in.

property DefaultMagnificationFilter: TAgkImageFilter;

You can use a mode of ifNearest to use the nearest pixel, which will appear blocky, or ifLinear (default) to use a linear filter which will look blurry. When the image matches the screen space exactly then both filters will look the same. When there is a slight difference, nearest tends to be sharper, but may flicker as it changes pixel choice. You can set this value per image using TAgkImage.MagnificationFilter.

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