sophus_renderer 0.14.0

wgpu-based renderer
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

@group(0) @binding(1)
var<uniform> zoom_2d: Zoom2d;

@group(0) @binding(2)
var<uniform> ortho_camera: PinholeModel;

struct VertexOut {
    @location(0) color: vec4<f32>,
    @builtin(position) position: vec4<f32>,
};

@vertex
fn vs_main(
     @location(0) position: vec2<f32>,
     @location(1) point_size: f32,
     @location(2) color: vec4<f32>,
     @builtin(vertex_index) idx: u32)-> VertexOut
{
    var out: VertexOut;
    var point_radius = 0.5 * point_size * ortho_camera.viewport_scale;

    var u = position.x;
    var v = position.y;
    var mod4 = idx % 6u;
    if mod4 == 0u {
        u -= point_radius;
        v -= point_radius;
    } else if mod4 == 1u || mod4 == 3u {
        u += point_radius;
        v -= point_radius;
    } else if mod4 == 2u || mod4 == 4u {
        u -= point_radius;
        v +=point_radius;
    } else if mod4 == 5u {
        u += point_radius;
        v += point_radius;
    }

    out.position = ortho_pixel_and_z_to_clip(vec2<f32>(u, v), zoom_2d, ortho_camera);
    out.color = color;

    return out;
}

@fragment
fn fs_main(in: VertexOut) -> @location(0) vec4<f32> {
    return in.color;
}