oxihuman-viewer 0.2.1

wgpu/WebGPU rendering adapter for OxiHuman
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

// Copyright (C) 2026 COOLJAPAN OU (Team KitaSan)
// SPDX-License-Identifier: Apache-2.0
#![allow(dead_code)]

/// Texture wrap mode.
#[allow(dead_code)]
#[derive(Debug, Clone, PartialEq)]
pub enum WrapMode {
    Repeat,
    ClampToEdge,
    MirroredRepeat,
}

/// Texture filter mode.
#[allow(dead_code)]
#[derive(Debug, Clone, PartialEq)]
pub enum FilterMode {
    Nearest,
    Linear,
    Mipmap,
}

/// Texture sampler state descriptor.
#[allow(dead_code)]
#[derive(Debug, Clone)]
pub struct TextureSampler {
    pub wrap_s: WrapMode,
    pub wrap_t: WrapMode,
    pub min_filter: FilterMode,
    pub mag_filter: FilterMode,
    pub anisotropy: f32,
}

/// Create a default sampler (linear, clamp, no anisotropy).
#[allow(dead_code)]
pub fn default_texture_sampler() -> TextureSampler {
    TextureSampler {
        wrap_s: WrapMode::ClampToEdge,
        wrap_t: WrapMode::ClampToEdge,
        min_filter: FilterMode::Linear,
        mag_filter: FilterMode::Linear,
        anisotropy: 1.0,
    }
}

/// Create a linear sampler with repeat wrap.
#[allow(dead_code)]
pub fn linear_sampler() -> TextureSampler {
    TextureSampler {
        wrap_s: WrapMode::Repeat,
        wrap_t: WrapMode::Repeat,
        min_filter: FilterMode::Linear,
        mag_filter: FilterMode::Linear,
        anisotropy: 1.0,
    }
}

/// Create a nearest-neighbor sampler.
#[allow(dead_code)]
pub fn nearest_sampler() -> TextureSampler {
    TextureSampler {
        wrap_s: WrapMode::ClampToEdge,
        wrap_t: WrapMode::ClampToEdge,
        min_filter: FilterMode::Nearest,
        mag_filter: FilterMode::Nearest,
        anisotropy: 1.0,
    }
}

/// Create a sampler with the given anisotropy level.
#[allow(dead_code)]
pub fn sampler_aniso(level: f32) -> TextureSampler {
    TextureSampler {
        wrap_s: WrapMode::Repeat,
        wrap_t: WrapMode::Repeat,
        min_filter: FilterMode::Mipmap,
        mag_filter: FilterMode::Linear,
        anisotropy: level.max(1.0),
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn default_sampler_clamp() {
        let s = default_texture_sampler();
        assert_eq!(s.wrap_s, WrapMode::ClampToEdge);
        assert_eq!(s.wrap_t, WrapMode::ClampToEdge);
    }

    #[test]
    fn default_sampler_linear_filter() {
        let s = default_texture_sampler();
        assert_eq!(s.min_filter, FilterMode::Linear);
        assert_eq!(s.mag_filter, FilterMode::Linear);
    }

    #[test]
    fn default_sampler_anisotropy_one() {
        let s = default_texture_sampler();
        assert!((s.anisotropy - 1.0).abs() < 1e-6);
    }

    #[test]
    fn linear_sampler_repeat_wrap() {
        let s = linear_sampler();
        assert_eq!(s.wrap_s, WrapMode::Repeat);
        assert_eq!(s.wrap_t, WrapMode::Repeat);
    }

    #[test]
    fn nearest_sampler_nearest_filter() {
        let s = nearest_sampler();
        assert_eq!(s.min_filter, FilterMode::Nearest);
        assert_eq!(s.mag_filter, FilterMode::Nearest);
    }

    #[test]
    fn sampler_aniso_mipmap_filter() {
        let s = sampler_aniso(8.0);
        assert_eq!(s.min_filter, FilterMode::Mipmap);
    }

    #[test]
    fn sampler_aniso_level_stored() {
        let s = sampler_aniso(16.0);
        assert!((s.anisotropy - 16.0).abs() < 1e-5);
    }

    #[test]
    fn sampler_aniso_clamps_to_one() {
        let s = sampler_aniso(0.0);
        assert!(s.anisotropy >= 1.0);
    }

    #[test]
    fn nearest_sampler_clamp_wrap() {
        let s = nearest_sampler();
        assert_eq!(s.wrap_s, WrapMode::ClampToEdge);
    }

    #[test]
    fn linear_sampler_linear_filters() {
        let s = linear_sampler();
        assert_eq!(s.min_filter, FilterMode::Linear);
    }
}