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

//! Utilities for creating shader states.

/// Describes how the vertex buffer is interpreted.
#[derive(Clone, Debug)]
pub struct VertexBufferLayout {
    /// The stride, in bytes, between elements of this buffer.
    pub array_stride: wgpu::BufferAddress,
    /// How often this vertex buffer is "stepped" forward.
    pub step_mode: wgpu::VertexStepMode,
    /// The list of attributes which comprise a single vertex.
    pub attributes: Vec<wgpu::VertexAttribute>,
}

/// Describes the fragment process in a render pipeline.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FragmentState {
    /// The shader source
    pub source: &'static str,
    /// The name of the entry point in the compiled shader. There must be a
    /// function with this name in the shader.
    pub entry_point: &'static str,
    /// The color state of the render targets.
    pub targets: Vec<Option<wgpu::ColorTargetState>>,
}

#[derive(Clone, Debug)]
pub struct VertexState {
    /// The shader source
    pub source: &'static str,
    /// The name of the entry point in the compiled shader. There must be a
    /// function with this name in the shader.
    pub entry_point: &'static str,
    /// The format of any vertex buffers used with this pipeline.
    pub buffers: Vec<VertexBufferLayout>,
}