1//! This shader draws the color plane in various color spaces.
2import bevy_ui_render::ui_vertex_output::UiVertexOutput;
3import bevy_render::color_operations::{
4    srgb_to_linear_rgb,
5    hsl_to_linear_rgb,
6    okhsl_to_linear_rgb,
7};
8
9struct ColorPlaneUniform {
10    fixed_channel: f32,
11@if(SIXTEEN_BYTE_ALIGNMENT)
12    _webgl2_padding_12b: vec3<f32>,
13}
14
15@group(1) @binding(0) var<uniform> uniform_data: ColorPlaneUniform;
16
17@fragment
18fn fragment(in: UiVertexOutput) -> @location(0) vec4<f32> {
19    let uv = in.uv;
20@if(PLANE_RG)
21    return vec4(srgb_to_linear_rgb(vec3(uv.x, 1.0 - uv.y, uniform_data.fixed_channel)), 1.0);
22@elif(PLANE_RB)
23    return vec4(srgb_to_linear_rgb(vec3(uv.x, uniform_data.fixed_channel, 1.0 - uv.y)), 1.0);
24@elif(PLANE_GB)
25    return vec4(srgb_to_linear_rgb(vec3(uniform_data.fixed_channel, uv.x, 1.0 - uv.y)), 1.0);
26@elif(PLANE_HS)
27    return vec4(hsl_to_linear_rgb(vec3(uv.x, 1.0 - uv.y, uniform_data.fixed_channel)), 1.0);
28@elif(PLANE_HL)
29    return vec4(hsl_to_linear_rgb(vec3(uv.x, uniform_data.fixed_channel, 1.0 - uv.y)), 1.0);
30@elif(PLANE_OKHS)
31    return vec4(okhsl_to_linear_rgb(vec3(uv.x, 1.0 - uv.y, uniform_data.fixed_channel)), 1.0);
32@elif(PLANE_OKHL)
33    return vec4(okhsl_to_linear_rgb(vec3(uv.x, uniform_data.fixed_channel, 1.0 - uv.y)), 1.0);
34@else
35    // Error color
36    return vec4(1.0, 0.0, 1.0, 1.0);
37}