rend3-pbr 0.0.6

Type definitions for rend3
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

use std::{mem, num::NonZeroU64};

use glam::{Mat3A, Mat4};
use wgpu::{
    BindGroupLayout, BindGroupLayoutDescriptor, BindGroupLayoutEntry, BindingType, BufferBindingType, Device,
    ShaderStages, TextureSampleType, TextureViewDimension,
};

use crate::uniforms::ShaderCommonUniform;

#[repr(C, align(16))]
#[derive(Debug, Copy, Clone)]
pub struct PerObjectData {
    pub model_view: Mat4,
    pub model_view_proj: Mat4,
    pub inv_trans_model_view: Mat3A,
    // Unused in shader
    pub material_idx: u32,
}

unsafe impl bytemuck::Pod for PerObjectData {}
unsafe impl bytemuck::Zeroable for PerObjectData {}

pub struct ShaderInterfaces {
    // TODO: move this into samplers struct, in cpu mode this should only bind 2 samplers
    pub samplers_bgl: BindGroupLayout,
    pub culled_object_bgl: BindGroupLayout,
    pub uniform_bgl: BindGroupLayout,
    pub blit_bgl: BindGroupLayout,
    pub skybox_bgl: BindGroupLayout,
}

impl ShaderInterfaces {
    pub fn new(device: &Device) -> Self {
        let samplers_bgl = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
            label: Some("samplers bgl"),
            entries: &[
                BindGroupLayoutEntry {
                    binding: 0,
                    visibility: ShaderStages::FRAGMENT,
                    ty: BindingType::Sampler {
                        filtering: true,
                        comparison: false,
                    },
                    count: None,
                },
                BindGroupLayoutEntry {
                    binding: 1,
                    visibility: ShaderStages::FRAGMENT,
                    ty: BindingType::Sampler {
                        filtering: true,
                        comparison: false,
                    },
                    count: None,
                },
                BindGroupLayoutEntry {
                    binding: 2,
                    visibility: ShaderStages::FRAGMENT,
                    ty: BindingType::Sampler {
                        filtering: true,
                        comparison: true,
                    },
                    count: None,
                },
            ],
        });

        let culled_object_bgl = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
            label: Some("culled object bgl"),
            entries: &[BindGroupLayoutEntry {
                binding: 0,
                visibility: ShaderStages::VERTEX,
                ty: BindingType::Buffer {
                    ty: BufferBindingType::Storage { read_only: true },
                    has_dynamic_offset: false,
                    min_binding_size: NonZeroU64::new(mem::size_of::<PerObjectData>() as _),
                },
                count: None,
            }],
        });

        let uniform_bgl = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
            label: Some("uniform bgl"),
            entries: &[BindGroupLayoutEntry {
                binding: 0,
                visibility: ShaderStages::VERTEX | ShaderStages::FRAGMENT,
                ty: BindingType::Buffer {
                    ty: BufferBindingType::Uniform,
                    has_dynamic_offset: false,
                    min_binding_size: NonZeroU64::new(mem::size_of::<ShaderCommonUniform>() as _),
                },
                count: None,
            }],
        });

        let blit_bgl = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
            label: Some("blit bgl"),
            entries: &[BindGroupLayoutEntry {
                binding: 0,
                visibility: ShaderStages::FRAGMENT,
                ty: BindingType::Texture {
                    sample_type: TextureSampleType::Float { filterable: true },
                    view_dimension: TextureViewDimension::D2,
                    multisampled: false,
                },
                count: None,
            }],
        });

        let skybox_bgl = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
            label: Some("skybox bgl"),
            entries: &[BindGroupLayoutEntry {
                binding: 0,
                visibility: ShaderStages::FRAGMENT,
                ty: BindingType::Texture {
                    sample_type: TextureSampleType::Float { filterable: true },
                    view_dimension: TextureViewDimension::Cube,
                    multisampled: false,
                },
                count: None,
            }],
        });

        Self {
            samplers_bgl,
            culled_object_bgl,
            uniform_bgl,
            blit_bgl,
            skybox_bgl,
        }
    }
}