bevy/assets/shaders/instancing.wgsl
Jakob Hellermann b1476015d9 add some more pipelined-rendering shader examples (#3041)
based on #3031 

Adds some examples showing of how to use the new pipelined rendering for custom shaders.

- a minimal shader example which doesn't use render assets
- the same but using glsl
- an example showing how to render instanced data
- a shader which uses the seconds since startup to animate some textures


Instancing shader:
![grafik](https://user-images.githubusercontent.com/22177966/139299294-e176b62a-53d1-4287-9a66-02fb55affc02.png)
Animated shader:
![animate_shader](https://user-images.githubusercontent.com/22177966/139299718-2940c0f3-8480-4ee0-98d7-b6ba40dc1472.gif)
(the gif makes it look a bit ugly)

Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2022-01-05 19:43:11 +00:00

35 lines
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WebGPU Shading Language

#import bevy_pbr::mesh_view_bind_group
#import bevy_pbr::mesh_struct
[[group(1), binding(0)]]
var<uniform> mesh: Mesh;
struct Vertex {
[[location(0)]] position: vec3<f32>;
[[location(1)]] normal: vec3<f32>;
[[location(2)]] uv: vec2<f32>;
[[location(3)]] i_pos_scale: vec4<f32>;
[[location(4)]] i_color: vec4<f32>;
};
struct VertexOutput {
[[builtin(position)]] clip_position: vec4<f32>;
[[location(0)]] color: vec4<f32>;
};
[[stage(vertex)]]
fn vertex(vertex: Vertex) -> VertexOutput {
let position = vertex.position * vertex.i_pos_scale.w + vertex.i_pos_scale.xyz;
let world_position = mesh.model * vec4<f32>(position, 1.0);
var out: VertexOutput;
out.clip_position = view.view_proj * world_position;
out.color = vertex.i_color;
return out;
}
[[stage(fragment)]]
fn fragment(in: VertexOutput) -> [[location(0)]] vec4<f32> {
return in.color;
}