From 3f3e2f4cc992e194414fba591cefad5d2528e369 Mon Sep 17 00:00:00 2001
From: Steven <stevenhuyn@gmail.com>
Date: Sun, 30 Apr 2023 12:36:37 -0700
Subject: [PATCH] Every 7th cube falls

---
 cubeway/src/compute.wgsl | 20 +++++++-------------
 cubeway/src/lib.rs       |  1 -
 2 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/cubeway/src/compute.wgsl b/cubeway/src/compute.wgsl
index b98f411..6933bcd 100644
--- a/cubeway/src/compute.wgsl
+++ b/cubeway/src/compute.wgsl
@@ -12,20 +12,14 @@ struct Instances {
 }
 
 @binding(0) @group(0) var<uniform> params : SimParams;
-@binding(1) @group(0) var<storage, read_write> instanceBuffer : Instances;
+@binding(1) @group(0) var<storage, read_write> instanceBuffer : array<Instance>;
 @compute @workgroup_size(64)
-fn main(@builtin(global_invocation_id) GlobalInvocationID : vec3<u32>) {
-  var index = GlobalInvocationID.x;
+fn main(@builtin(global_invocation_id) GlobalInvocationID: vec3<u32>) {
+    var index = GlobalInvocationID.x;
 
-  instanceBuffer.instances[index + 0u].position.y -= 0.0001;
-//   instanceBuffer.instances[index + 0u].position.y -= 0.0001;
-//   instanceBuffer.instances[index + 0u].position.z -= 0.0001;
-//   instanceBuffer.instances[index + 0u].rotation.x -= 0.0001;
-//   instanceBuffer.instances[index + 0u].rotation.y -= 0.0001;
-//   instanceBuffer.instances[index + 0u].rotation.z -= 0.0001;
-//   instanceBuffer.instances[index + 0u].rotation.w -= 0.0001;
+    instanceBuffer[index * 7u].position.y -= 0.001;
 
-  if (index < 100u) {
-    let bufferIndex = u32(f32(index) * 7.0);
-  }
+    if index < 100u {
+        let bufferIndex = u32(f32(index) * 7.0);
+    }
 }
diff --git a/cubeway/src/lib.rs b/cubeway/src/lib.rs
index 070f4e5..b5257ae 100644
--- a/cubeway/src/lib.rs
+++ b/cubeway/src/lib.rs
@@ -392,7 +392,6 @@ impl State {
 
         particle_buffers.push(instance_buffer);
 
-        // Create 2 bind groups one for each buffer
         particle_bind_groups.push(device.create_bind_group(&wgpu::BindGroupDescriptor {
             layout: &particle_bind_group_layout,
             entries: &[