gizmo-renderer 0.1.5

A custom ECS and physics engine aimed for realistic simulations.
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

use super::types::GpuParticle;

pub struct ParticlePipelines {
    pub compute_pipeline: wgpu::ComputePipeline,
    pub compute_bind_group: wgpu::BindGroup,
    pub render_pipeline: wgpu::RenderPipeline,
}

pub fn create_particle_pipelines(
    device: &wgpu::Device,
    global_bind_group_layout: &wgpu::BindGroupLayout,
    output_format: wgpu::TextureFormat,
    params_buffer: &wgpu::Buffer,
    particles_buffer: &wgpu::Buffer,
) -> ParticlePipelines {
    let compute_bind_group_layout =
        device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
            entries: &[
                wgpu::BindGroupLayoutEntry {
                    binding: 0,
                    visibility: wgpu::ShaderStages::COMPUTE,
                    ty: wgpu::BindingType::Buffer {
                        ty: wgpu::BufferBindingType::Uniform,
                        has_dynamic_offset: false,
                        min_binding_size: None,
                    },
                    count: None,
                },
                wgpu::BindGroupLayoutEntry {
                    binding: 1,
                    visibility: wgpu::ShaderStages::COMPUTE,
                    ty: wgpu::BindingType::Buffer {
                        ty: wgpu::BufferBindingType::Storage { read_only: false },
                        has_dynamic_offset: false,
                        min_binding_size: None,
                    },
                    count: None,
                },
            ],
            label: Some("particle_compute_layout"),
        });

    let compute_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
        layout: &compute_bind_group_layout,
        entries: &[
            wgpu::BindGroupEntry {
                binding: 0,
                resource: params_buffer.as_entire_binding(),
            },
            wgpu::BindGroupEntry {
                binding: 1,
                resource: particles_buffer.as_entire_binding(),
            },
        ],
        label: Some("particle_compute_bind_group"),
    });

    let compute_shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
        label: Some("Particle Compute Shader"),
        source: wgpu::ShaderSource::Wgsl(include_str!("../shaders/particle_compute.wgsl").into()),
    });

    let compute_pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
        label: Some("Particle Compute Pipeline Layout"),
        bind_group_layouts: &[&compute_bind_group_layout],
        push_constant_ranges: &[],
    });

    let compute_pipeline = device.create_compute_pipeline(&wgpu::ComputePipelineDescriptor {
        label: Some("Particle Compute Pipeline"),
        layout: Some(&compute_pipeline_layout),
        module: &compute_shader,
        entry_point: "main",
        compilation_options: Default::default(),
    });

    let render_shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
        label: Some("Particle Render Shader"),
        source: wgpu::ShaderSource::Wgsl(include_str!("../shaders/particle_render.wgsl").into()),
    });

    let render_pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
        label: Some("Particle Render Pipeline Layout"),
        bind_group_layouts: &[global_bind_group_layout],
        push_constant_ranges: &[],
    });

    let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
        label: Some("Particle Render Pipeline"),
        layout: Some(&render_pipeline_layout),
        vertex: wgpu::VertexState {
            module: &render_shader,
            entry_point: "vs_main",
            compilation_options: Default::default(),
            buffers: &[
                wgpu::VertexBufferLayout {
                    array_stride: std::mem::size_of::<[f32; 2]>() as wgpu::BufferAddress,
                    step_mode: wgpu::VertexStepMode::Vertex,
                    attributes: &wgpu::vertex_attr_array![4 => Float32x2],
                },
                GpuParticle::desc(),
            ],
        },
        fragment: Some(wgpu::FragmentState {
            module: &render_shader,
            entry_point: "fs_main",
            compilation_options: Default::default(),
            targets: &[Some(wgpu::ColorTargetState {
                format: output_format,
                blend: Some(wgpu::BlendState::ALPHA_BLENDING),
                write_mask: wgpu::ColorWrites::ALL,
            })],
        }),
        primitive: wgpu::PrimitiveState {
            topology: wgpu::PrimitiveTopology::TriangleStrip,
            front_face: wgpu::FrontFace::Ccw,
            cull_mode: None,
            ..Default::default()
        },
        depth_stencil: Some(wgpu::DepthStencilState {
            format: wgpu::TextureFormat::Depth32Float,
            depth_write_enabled: false,
            depth_compare: wgpu::CompareFunction::Less,
            stencil: wgpu::StencilState::default(),
            bias: wgpu::DepthBiasState::default(),
        }),
        multisample: wgpu::MultisampleState::default(),
        multiview: None,
    });

    ParticlePipelines {
        compute_pipeline,
        compute_bind_group,
        render_pipeline,
    }
}