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Added HUE_GUARD constant

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This commit is contained in:
ickshonpe 2025-07-08 18:18:13 +01:00
parent 908ccd5e34
commit 3df4d3f95f
1 changed files with 15 additions and 12 deletions
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27
crates/bevy_ui_render/src/gradient.wgsl
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@ -6,6 +6,7 @@
const PI: f32 = 3.14159265358979323846;
const TAU: f32 = 2. * PI;
const HUE_GUARD: f32 = 0.0001;
const TEXTURED = 1u;
const RIGHT_VERTEX = 2u;
@ -114,6 +115,7 @@ fn fragment(in: GradientVertexOutput) -> @location(0) vec4<f32> {
}
}
// https://en.wikipedia.org/wiki/SRGB
fn gamma(value: f32) -> f32 {
if value <= 0.0 {
return value;
@ -125,6 +127,7 @@ fn gamma(value: f32) -> f32 {
}
}
// https://en.wikipedia.org/wiki/SRGB
fn inverse_gamma(value: f32) -> f32 {
if value <= 0.0 {
return value;
@ -320,9 +323,9 @@ fn lerp_hue_long(a: f32, b: f32, t: f32) -> f32 {
fn mix_oklch(a: vec3<f32>, b: vec3<f32>, t: f32) -> vec3<f32> {
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.z;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.z;
} else {
h = lerp_hue(a.z, b.z, t);
@ -335,9 +338,9 @@ fn mix_oklch(a: vec3<f32>, b: vec3<f32>, t: f32) -> vec3<f32> {
fn mix_oklch_long(a: vec3<f32>, b: vec3<f32>, t: f32) -> vec3<f32> {
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.z;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.z;
} else {
h = lerp_hue(a.z, b.z, t);
@ -360,9 +363,9 @@ fn mix_linear_rgb_in_hsv_space(la: vec3<f32>, lb: vec3<f32>, t: f32) -> vec3<f32
let a = linear_rgb_to_hsv(la);
let b = linear_rgb_to_hsv(lb);
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.x;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.x;
} else {
h = lerp_hue(a.x * TAU, b.x * TAU, t) / TAU;
@ -376,9 +379,9 @@ fn mix_linear_rgb_in_hsv_space_long(la: vec3<f32>, lb: vec3<f32>, t: f32) -> vec
let a = linear_rgb_to_hsv(la);
let b = linear_rgb_to_hsv(lb);
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.z;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.z;
} else {
h = lerp_hue_long(a.x * TAU, b.x * TAU, t) / TAU;
@ -392,9 +395,9 @@ fn mix_linear_rgb_in_hsl_space(la: vec3<f32>, lb: vec3<f32>, t: f32) -> vec3<f32
let a = linear_rgb_to_hsl(la);
let b = linear_rgb_to_hsl(lb);
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.x;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.x;
} else {
h = lerp_hue(a.x * TAU, b.x * TAU, t) / TAU;
@ -408,9 +411,9 @@ fn mix_linear_rgb_in_hsl_space_long(la: vec3<f32>, lb: vec3<f32>, t: f32) -> vec
let a = linear_rgb_to_hsl(la);
let b = linear_rgb_to_hsl(lb);
var h: f32;
if a.y < 0.0001 {
if a.y < HUE_GUARD {
h = b.x;
} else if b.y < 0.0001 {
} else if b.y < HUE_GUARD {
h = a.x;
} else {
h = lerp_hue_long(a.x * TAU, b.x * TAU, t) / TAU;