From 11a57882861f9811cb1624d76a2b08ffb7d47b9c Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Mon, 21 Nov 2022 20:19:18 +0100
Subject: works (not)

---
 vgcodec/src/diff.wgsl | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'vgcodec/src/diff.wgsl')

diff --git a/vgcodec/src/diff.wgsl b/vgcodec/src/diff.wgsl
index bb5a3e1..82e169b 100644
--- a/vgcodec/src/diff.wgsl
+++ b/vgcodec/src/diff.wgsl
@@ -10,8 +10,7 @@ var<storage, read_write> exp: atomic<u32>;
 fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
     var col_a = textureLoad(tex_a, vec2(i32(global_id.x), i32(global_id.y)), 0);
     var col_b = textureLoad(tex_b, vec2(i32(global_id.x), i32(global_id.y)), 0);
-    var diff = col_a - col_b;
-    var diffsum = diff.r + diff.g + diff.b;
-    atomicAdd(&exp, u32(diffsum));
+    var diff = length(col_a - col_b);
+    atomicAdd(&exp, u32(diff * 1000.0));
 }
 
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