matrix_engine 0.2.4

a small game engine developed by drmatrix
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


struct VertexInput {
    @location(0) position: vec3<f32>,
    @location(1) tex_coords: vec2<f32>,
}

struct VertexOutput {
    @builtin(position) clip_position: vec4<f32>,
    @location(0) tex_coords: vec2<f32>,
}

struct CameraUniform {
    view_proj: mat4x4<f32>,
};

@group(1) @binding(0) // 1.
var<uniform> camera: CameraUniform;

struct InstanceInput {
    @location(2) model_matrix_0: vec4<f32>,
    @location(3) model_matrix_1: vec4<f32>,
    @location(4) model_matrix_2: vec4<f32>,
    @location(5) model_matrix_3: vec4<f32>,
};
@vertex
fn vs_main(
    model: VertexInput,
    instance: InstanceInput
) -> VertexOutput {
    var out: VertexOutput;

    let model_matrix = mat4x4<f32>(
        instance.model_matrix_0,
        instance.model_matrix_1,
        instance.model_matrix_2,
        instance.model_matrix_3,
    );

    out.clip_position = camera.view_proj * model_matrix * vec4<f32>(model.position, 1.0);

    out.tex_coords = model.tex_coords;
    return out;
}


@group(0) @binding(0)
var t_diffuse: texture_2d<f32>;
@group(0) @binding(1)
var s_diffuse: sampler;

@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
    return textureSample(t_diffuse, s_diffuse, in.tex_coords);
}