Struct GammaLut 

pub struct GammaLut { /* private fields */ }

Gamma correction using pre-computed lookup tables. Port of C++ gamma_lut<LoResT, HiResT, GammaShift, HiResShift>.

Default parameters match C++ defaults: u8 for both low/high resolution, shift=8 for both, giving 256-entry tables.

Implementations

impl GammaLut

pub fn new() -> Self

Create a gamma LUT with identity gamma (1.0). Uses the default 8-bit/8-bit configuration.

pub fn new_with_gamma(g: f64) -> Self

Create a gamma LUT with the specified gamma value.

pub fn with_shifts(gamma_shift: u32, hi_res_shift: u32) -> Self

Create a gamma LUT with custom shift parameters.

pub fn set_gamma(&mut self, g: f64)

Set the gamma value and rebuild lookup tables.

pub fn gamma(&self) -> f64

Get the current gamma value.

pub fn dir(&self, v: u8) -> u8

Forward (direct) gamma correction: low-res → high-res.

pub fn inv(&self, v: u8) -> u8

Inverse gamma correction: high-res → low-res.

Trait Implementations

impl Default for GammaLut

fn default() -> Self

Returns the “default value” for a type.