xref: /aosp_15_r20/external/skia/tests/sksl/blend/BlendHue.wgsl (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1diagnostic(off, derivative_uniformity);
2diagnostic(off, chromium.unreachable_code);
3struct FSOut {
4  @location(0) sk_FragColor: vec4<f32>,
5};
6struct _GlobalUniforms {
7  src: vec4<f32>,
8  dst: vec4<f32>,
9};
10@binding(0) @group(0) var<uniform> _globalUniforms: _GlobalUniforms;
11const sk_PrivkGuardedDivideEpsilon: f32 = f32(select(0.0, 1e-08, false));
12const sk_PrivkMinNormalHalf: f32 = 6.10351562e-05;
13fn blend_color_saturation_Qhh3(color: vec3<f32>) -> f32 {
14  {
15    let _skTemp0 = max(color.x, color.y);
16    let _skTemp1 = max(_skTemp0, color.z);
17    let _skTemp2 = min(color.x, color.y);
18    let _skTemp3 = min(_skTemp2, color.z);
19    return _skTemp1 - _skTemp3;
20  }
21}
22fn blend_hslc_h4h2h4h4(flipSat: vec2<f32>, src: vec4<f32>, dst: vec4<f32>) -> vec4<f32> {
23  {
24    let alpha: f32 = dst.w * src.w;
25    let sda: vec3<f32> = src.xyz * dst.w;
26    let dsa: vec3<f32> = dst.xyz * src.w;
27    var l: vec3<f32> = select(sda, dsa, vec3<bool>(bool(flipSat.x)));
28    var r: vec3<f32> = select(dsa, sda, vec3<bool>(bool(flipSat.x)));
29    if bool(flipSat.y) {
30      {
31        let _skTemp4 = min(l.x, l.y);
32        let _skTemp5 = min(_skTemp4, l.z);
33        let _2_mn: f32 = _skTemp5;
34        let _skTemp6 = max(l.x, l.y);
35        let _skTemp7 = max(_skTemp6, l.z);
36        let _3_mx: f32 = _skTemp7;
37        var _skTemp8: vec3<f32>;
38        if _3_mx > _2_mn {
39          let _skTemp9 = blend_color_saturation_Qhh3(r);
40          _skTemp8 = ((l - _2_mn) * _skTemp9) / (_3_mx - _2_mn);
41        } else {
42          _skTemp8 = vec3<f32>(0.0);
43        }
44        l = _skTemp8;
45        r = dsa;
46      }
47    }
48    let _skTemp10 = dot(vec3<f32>(0.3, 0.59, 0.11), r);
49    let _4_lum: f32 = _skTemp10;
50    let _skTemp11 = dot(vec3<f32>(0.3, 0.59, 0.11), l);
51    var _5_result: vec3<f32> = (_4_lum - _skTemp11) + l;
52    let _skTemp12 = min(_5_result.x, _5_result.y);
53    let _skTemp13 = min(_skTemp12, _5_result.z);
54    let _6_minComp: f32 = _skTemp13;
55    let _skTemp14 = max(_5_result.x, _5_result.y);
56    let _skTemp15 = max(_skTemp14, _5_result.z);
57    let _7_maxComp: f32 = _skTemp15;
58    if (_6_minComp < 0.0) && (_4_lum != _6_minComp) {
59      {
60        _5_result = _4_lum + (_5_result - _4_lum) * (_4_lum / (((_4_lum - _6_minComp) + sk_PrivkMinNormalHalf) + sk_PrivkGuardedDivideEpsilon));
61      }
62    }
63    if (_7_maxComp > alpha) && (_7_maxComp != _4_lum) {
64      {
65        _5_result = _4_lum + ((_5_result - _4_lum) * (alpha - _4_lum)) / (((_7_maxComp - _4_lum) + sk_PrivkMinNormalHalf) + sk_PrivkGuardedDivideEpsilon);
66      }
67    }
68    return vec4<f32>((((_5_result + dst.xyz) - dsa) + src.xyz) - sda, (src.w + dst.w) - alpha);
69  }
70}
71fn _skslMain(_stageOut: ptr<function, FSOut>) {
72  {
73    let _skTemp16 = blend_hslc_h4h2h4h4(vec2<f32>(0.0, 1.0), _globalUniforms.src, _globalUniforms.dst);
74    (*_stageOut).sk_FragColor = _skTemp16;
75  }
76}
77@fragment fn main() -> FSOut {
78  var _stageOut: FSOut;
79  _skslMain(&_stageOut);
80  return _stageOut;
81}
82