enough fixes so that it compiles

src/main.rs

@@ -1,5 +1,5 @@
 #![feature(variant_count)]
-#![feature(array_chunks)]
+#![feature(iter_array_chunks)]
 #![feature(portable_simd)]
 #![feature(mpmc_channel)]
 
@@ -386,6 +386,7 @@ impl App {
                     maintenance4: true,
                     fill_mode_non_solid: true,
                     shader_draw_parameters: true,
+                    shader_demote_to_helper_invocation: true,
                     ..DeviceFeatures::empty()
                 },
                 ..Default::default()
@@ -483,7 +484,9 @@ impl App {
 
         let trace_spv_code = include_bytes!("trace.recompiled.spv");
         let trace_spv_code_u32 = trace_spv_code
-            .array_chunks::<4>()
+            .as_chunks::<4>()
+            .0
+            .into_iter()
             .map(|u| u32::from_le_bytes(*u))
             .collect::<Vec<_>>();
         let mut loader = rspirv::dr::Loader::new();
@@ -492,7 +495,9 @@ impl App {
 
         let normals_spv_code = include_bytes!("normals.recompiled.spv");
         let normals_spv_code_u32 = normals_spv_code
-            .array_chunks::<4>()
+            .as_chunks::<4>()
+            .0
+            .into_iter()
             .map(|u| u32::from_le_bytes(*u))
             .collect::<Vec<_>>();
         let mut loader = rspirv::dr::Loader::new();