1#define_import_path bevy_render::view
2
3struct ColorGrading {
4    balance: mat3x3<f32>,
5    saturation: vec3<f32>,
6    contrast: vec3<f32>,
7    gamma: vec3<f32>,
8    gain: vec3<f32>,
9    lift: vec3<f32>,
10    midtone_range: vec2<f32>,
11    exposure: f32,
12    hue: f32,
13    post_saturation: f32,
14}
15
16struct View {
17    clip_from_world: mat4x4<f32>,
18    unjittered_clip_from_world: mat4x4<f32>,
19    world_from_clip: mat4x4<f32>,
20    world_from_view: mat4x4<f32>,
21    view_from_world: mat4x4<f32>,
22    // Typically a column-major right-handed projection matrix, one of either:
23    //
24    // Perspective (infinite reverse z)
25    // ```
26    // f = 1 / tan(fov_y_radians / 2)
27    //
28    // ⎡ f / aspect  0   0     0 ⎤
29    // ⎢          0  f   0     0 ⎥
30    // ⎢          0  0   0  near ⎥
31    // ⎣          0  0  -1     0 ⎦
32    // ```
33    //
34    // Orthographic
35    // ```
36    // w = right - left
37    // h = top - bottom
38    // d = far - near
39    // cw = -right - left
40    // ch = -top - bottom
41    //
42    // ⎡ 2 / w      0      0   cw / w ⎤
43    // ⎢     0  2 / h      0   ch / h ⎥
44    // ⎢     0      0  1 / d  far / d ⎥
45    // ⎣     0      0      0        1 ⎦
46    // ```
47    //
48    // `clip_from_view[3][3] == 1.0` is the standard way to check if a projection is orthographic
49    //
50    // Wgsl matrices are column major, so for example getting the near plane of a perspective projection is `clip_from_view[3][2]`
51    // 
52    // Custom projections are also possible however.
53    clip_from_view: mat4x4<f32>,
54    view_from_clip: mat4x4<f32>,
55    world_position: vec3<f32>,
56    exposure: f32,
57    // viewport(x_origin, y_origin, width, height)
58    viewport: vec4<f32>,
59    // 6 world-space half spaces (normal: vec3, distance: f32) ordered left, right, top, bottom, near, far.
60    // The normal vectors point towards the interior of the frustum.
61    // A half space contains `p` if `normal.dot(p) + distance > 0.`
62    frustum: array<vec4<f32>, 6>,
63    color_grading: ColorGrading,
64    mip_bias: f32,
65    frame_count: u32,
66};