Struct Lut3D 

pub struct Lut3D {
    pub size: u32,
    pub data: Vec<[f32; 3]>,
}

A 3D color look-up table.

Fields

size: u32

LUT dimension (e.g. 16 or 32). Total entries = size³.

data: Vec<[f32; 3]>

RGB data, row-major: data[r + gsize + bsize*size] = (out_r, out_g, out_b).

Implementations

impl Lut3D

pub fn identity(size: u32) -> Self

Create an identity LUT (output = input) of the given size.

pub fn from_params(size: u32, params: &ColorGradeParams) -> Self

Generate a LUT from color grade parameters.

pub fn sample(&self, input: Vec3) -> Vec3

Sample the LUT with trilinear interpolation.

pub fn blend(&self, other: &Lut3D, t: f32) -> Lut3D

Linearly blend two LUTs together. t = 0.0 returns self, 1.0 returns other.

pub fn to_rgb_f32(&self) -> Vec<f32>

Convert to flat f32 RGB buffer for GPU upload.

pub fn to_rgb_u8(&self) -> Vec<u8>

Convert to u8 RGB buffer for GPU upload (RGBA8 3D texture).

pub fn entry_count(&self) -> usize

Total number of entries.

pub fn memory_bytes(&self) -> usize

Memory size in bytes (f32 RGB).

Trait Implementations

impl Clone for Lut3D

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Lut3D

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.