From 93347346e8bd8f7412ae03a0858dd307a1df2e0d Mon Sep 17 00:00:00 2001 From: Micha White Date: Thu, 20 Oct 2022 20:39:44 -0400 Subject: Moved files into workspace --- alligator_render/src/vertex.rs | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 alligator_render/src/vertex.rs (limited to 'alligator_render/src/vertex.rs') diff --git a/alligator_render/src/vertex.rs b/alligator_render/src/vertex.rs new file mode 100644 index 0000000..570eec4 --- /dev/null +++ b/alligator_render/src/vertex.rs @@ -0,0 +1,39 @@ +use std::mem::size_of; + +use bytemuck::{Pod, Zeroable}; + +/// The vertices needed to form a square +pub const SQUARE: [Vertex; 6] = [ + Vertex::new(-0.5, -0.5), + Vertex::new(0.5, -0.5), + Vertex::new(-0.5, 0.5), + Vertex::new(0.5, 0.5), + Vertex::new(-0.5, 0.5), + Vertex::new(0.5, -0.5), +]; + +/// A vertex that is usable by the alligator shader +#[repr(C)] +#[derive(Copy, Clone, Debug, PartialEq, Pod, Zeroable)] +pub struct Vertex { + position: [f32; 2], +} + +impl Vertex { + // whenever this is updated, please also update `sprite.wgsl` + pub(crate) const ATTRIBUTES: [wgpu::VertexAttribute; 1] = + wgpu::vertex_attr_array![0 => Float32x2]; + + /// Create a new vertex + const fn new(x: f32, y: f32) -> Self { + Self { position: [x, y] } + } + + pub(crate) const fn desc<'a>() -> wgpu::VertexBufferLayout<'a> { + wgpu::VertexBufferLayout { + array_stride: size_of::() as wgpu::BufferAddress, + step_mode: wgpu::VertexStepMode::Vertex, + attributes: &Self::ATTRIBUTES, + } + } +} -- cgit v1.2.3