diff options
| -rw-r--r-- | graphics/composer/aidl/android/hardware/graphics/composer3/DimmingStage.aidl | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/DimmingStage.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/DimmingStage.aidl index f732d417b1..23d5f4a007 100644 --- a/graphics/composer/aidl/android/hardware/graphics/composer3/DimmingStage.aidl +++ b/graphics/composer/aidl/android/hardware/graphics/composer3/DimmingStage.aidl @@ -29,7 +29,12 @@ enum DimmingStage { */ LINEAR = 1, /** - * Dimming operations must be applied in gamma space, after OETF has been applied + * Dimming operations must be applied in gamma space, after OETF has been applied. + * Note that for this dimming operation to be perceptually correct it must also be gamma + * corrected. The framework will assume that it is able to use the gamma 2.2 + * power function for gamma correcting the dimming matrix, for simplicity of + * implementation and the fact that gamma 2.2 is close enough to typical SDR + * transfer functions that would be used for the client target. */ GAMMA_OETF = 2, } |