The config is compatible with the current hardware.

The config doesn't impact any connected display.

Said differently, the config does not assign layers to any display that
is still connected to the system. A simple but unlikely case is that the
client did not assign any layers to any displays. A more complex and
likely case is that the client did assign layers to at least one
display, but that display is no longer connected to the system.

Clients should process any display changes and retry the
[`Coordinator.CheckConfig`] call.

The config is not compatible with any hardware.

The config layer assignment is not supported by the current hardware.

The config uses more than the number of connected displays.

The config display modes are not supported by the current hardware.

The client should try a different set of displays or display modes.

Image pixels are passed through without any change.

This is the only value guaranteed to be supported by all display engine
drivers.

Image pixels are reflected across a line meeting the image's center, parallel to the X axis.

This enum member's numeric value has a single bit set to 1. Any
transformation whose value has this bit set involves an X reflection.

This transformation is also called an "X flip".

Example:
|a b c d| |i j k l|
|e f g h| -> |e f g h|
|i j k l| |a b c d|

Image pixels are reflected across a line meeting the image's center, parallel to the Y axis.

This enum member's numeric value has a single bit set to 1. Any
transformation whose value has this bit set involves an Y reflection.

This transformation is also called an "Y flip".

Example:
|a b c d| |d c b a|
|e f g h| -> |h g f e|
|i j k l| |l k j i|

Image pixels are rotated around the image's center counter-clockwise by 180 degrees.

This is equivalent to applying the `REFLECT_X` and `REFLECT_Y`
transforms. `REFLECT_X` and `REFLECT_Y` are commutative, so their
ordering doesn't matter.

Example:
|a b c d| |l k j i|
|e f g h| -> |h g f e|
|i j k l| |d c b a|

Image pixels are rotated around the image's center counter-clockwise by 90 degrees.

The image produced by this transformation has different dimensions from
the input image.

This enum member's numeric value has a single bit set to 1. Any
transformation whose value has this bit set involves a 90-degree
counter-clockwise rotation.

Example:
|a b c d| |d h l|
|e f g h| -> |c g k|
|i j k l| |b f j|
|a e i|

Image pixels are transformed using `ROTATE_CCW_90`, followed by `REFLECT_X`.

The image produced by this transformation has different dimensions from
the input image.

Example:
|a b c d| |a e i|
|e f g h| -> |b f k|
|i j k l| |c g k|
|d h l|

Image pixels are transformed using `ROTATE_CCW_90`, followed by `REFLECT_Y`.

The image produced by this transformation has different dimensions from
the input image.

Example:
|a b c d| |l h d|
|e f g h| -> |k g c|
|i j k l| |j f b|
|i e a|

Image pixels are rotated around the image's center counter-clockwise by 270 degrees.

The image produced by this transformation has different dimensions from
the input image.

This is equivalent to applying the `ROTATE_CCW_90` transform, followed
by `REFLECT_X` and `REFLECT_Y`. `REFLECT_X` and `REFLECT_Y` are
commutative, so their ordering doesn't matter.

Example:
|a b c d| |i e a|
|e f g h| -> |j f b|
|i j k l| |k g c|
|l h d|

Alpha is disabled for the plane (default).

Plane alpha is premultiplied.

Hardware should multiply the alpha and color channels when blending.