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Serialize Color as srgb (#1136)

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This commit is contained in:
Dennis Kobert
2023-04-16 15:02:22 +02:00
committed by Keavon Chambers
parent b626d39035
commit f68bc42fc9
3 changed files with 18 additions and 9 deletions
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6
node-graph/gcore/src/raster.rs
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@@ -102,16 +102,14 @@ pub trait Pixel: Clone + Pod + Zeroable {
bytemuck::bytes_of(self).to_vec()
}
// TODO: use u8 for Color
fn from_bytes(bytes: &[u8]) -> &Self {
bytemuck::try_from_bytes(bytes).expect("Failed to convert bytes to pixel")
fn from_bytes(bytes: &[u8]) -> Self {
*bytemuck::try_from_bytes(bytes).expect("Failed to convert bytes to pixel")
}
fn byte_size() -> usize {
std::mem::size_of::<Self>()
}
}
impl<T: Serde + Clone + Pod + Zeroable> Pixel for T {}
pub trait RGB: Pixel {
type ColorChannel: Channel;
fn red(&self) -> Self::ColorChannel;

17
node-graph/gcore/src/raster/color.rs
View File

@@ -12,7 +12,7 @@ use spirv_std::num_traits::Euclid;
use bytemuck::{Pod, Zeroable};
use super::{Alpha, AssociatedAlpha, Luminance, Rec709Primaries, RGB, SRGB};
use super::{Alpha, AssociatedAlpha, Luminance, Pixel, Rec709Primaries, RGB, SRGB};
/// Structure that represents a color.
/// Internally alpha is stored as `f32` that ranges from `0.0` (transparent) to `1.0` (opaque).
@@ -52,6 +52,16 @@ impl RGB for Color {
}
}
impl Pixel for Color {
fn to_bytes(&self) -> Vec<u8> {
self.to_rgba8_srgb().to_vec()
}
fn from_bytes(bytes: &[u8]) -> Self {
Color::from_rgba8_srgb(bytes[0], bytes[1], bytes[2], bytes[3])
}
}
impl Alpha for Color {
type AlphaChannel = f32;
fn alpha(&self) -> f32 {
@@ -514,8 +524,9 @@ impl Color {
/// let color = Color::from_rgbaf32(0.114, 0.103, 0.98, 0.97).unwrap();
/// //TODO: Add test
/// ```
pub fn to_rgba8(&self) -> [u8; 4] {
[(self.red * 255.) as u8, (self.green * 255.) as u8, (self.blue * 255.) as u8, (self.alpha * 255.) as u8]
pub fn to_rgba8_srgb(&self) -> [u8; 4] {
let gamma = self.to_gamma_srgb();
[(gamma.red * 255.) as u8, (gamma.green * 255.) as u8, (gamma.blue * 255.) as u8, (gamma.alpha * 255.) as u8]
}
// https://www.niwa.nu/2013/05/math-behind-colorspace-conversions-rgb-hsl/