Moved files into workspace

1 files changed, 39 insertions, 0 deletions

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::<Self>() as wgpu::BufferAddress,
+			step_mode: wgpu::VertexStepMode::Vertex,
+			attributes: &Self::ATTRIBUTES,
+		}
+	}
+}