faa7627ea4
This is how browsers perform color management. They treat gamma-corrected sRGB colors as if they were linear RGB. Correctness aside, this mode is introduced for legacy reasons. Most UI/UX tooling uses this color management as well, and many have created an intuition about how color should behave from interacting with a browser. This feature flag should facilitate application development with `iced` in those cases. More details: https://webcolorisstillbroken.com/
46 lines
1 KiB
Rust
46 lines
1 KiB
Rust
//! Manage colors for shaders.
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use crate::core::Color;
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use bytemuck::{Pod, Zeroable};
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/// A color packed as 4 floats representing RGBA channels.
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#[derive(Debug, Clone, Copy, PartialEq, Zeroable, Pod)]
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#[repr(C)]
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pub struct Packed([f32; 4]);
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impl Packed {
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/// Returns the internal components of the [`Packed`] color.
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pub fn components(self) -> [f32; 4] {
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self.0
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}
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}
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/// A flag that indicates whether the renderer should perform gamma correction.
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pub const GAMMA_CORRECTION: bool = internal::GAMMA_CORRECTION;
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/// Packs a [`Color`].
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pub fn pack(color: impl Into<Color>) -> Packed {
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Packed(internal::pack(color.into()))
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}
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#[cfg(not(feature = "web-colors"))]
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mod internal {
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use crate::core::Color;
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pub const GAMMA_CORRECTION: bool = true;
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pub fn pack(color: Color) -> [f32; 4] {
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color.into_linear()
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}
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}
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#[cfg(feature = "web-colors")]
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mod internal {
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use crate::core::Color;
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pub const GAMMA_CORRECTION: bool = false;
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pub fn pack(color: Color) -> [f32; 4] {
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[color.r, color.g, color.b, color.a]
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}
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}
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