wasn't the layout. It was the colors being bound between 0-1 instead of 255 like I was expecting

src/main.rs

@@ -44,6 +44,7 @@ use shaderc::CompileOptions;
 use shade_runner::CompileError;
 use crate::workpiece::{WorkpieceLoader, Workpiece};
 use winit::{EventsLoop, WindowBuilder, WindowEvent, Event};
+use winit::dpi::LogicalSize;
 use vulkano_win::VkSurfaceBuild;
 
 
@@ -67,6 +68,7 @@ fn main() {
 
     let mut events_loop = EventsLoop::new();
     let mut surface = WindowBuilder::new()
+        .with_dimensions(LogicalSize::from((800, 800)))
         .build_vk_surface(&events_loop, instance.clone()).unwrap();
     let mut window = surface.window();