From 78af1ffd0344f58ecd6559e89c26c70c6222a570 Mon Sep 17 00:00:00 2001
From: Torsten Kammer <torsten@ferroequinologist.de>
Date: Sun, 5 May 2024 20:57:30 +0200
Subject: [PATCH] Accept the fact that PowerPC isn't coming back

Not yet touching the SIMD code, though, because I'm lazy.
---
 GLLara/GLLModelMesh.swift | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/GLLara/GLLModelMesh.swift b/GLLara/GLLModelMesh.swift
index 71141d5..affde19 100644
--- a/GLLara/GLLModelMesh.swift
+++ b/GLLara/GLLModelMesh.swift
@@ -295,22 +295,17 @@ import simd
     var elementSize: Int = 4
     var countOfElements: Int = 0
     
-    // Returns the element fo the index. If there is no element buffer (i.e. directly), returns its index
+    // Returns the element of the index. If there is no element buffer (i.e. directly), returns its index
     func element(at index: Int) -> Int {
-        guard let elementData = elementData else {
+        guard let elementData else {
             return index
         }
-        switch elementSize {
-        case 1:
-            return try! Int(elementData.readUInt8(at: index * 1))
-        case 2:
-            return try! Int(elementData.readUInt16(at: index * 2))
-        case 4:
-            return try! Int(elementData.readUInt32(at: index * 4))
-        default:
-            assertionFailure("Unknown element component type")
-            return 0
+        // This trickery only works on little endian machines. But nowadays, that's all of them
+        var result: Int = 0
+        _ = withUnsafeMutableBytes(of: &result) { bytes in
+            elementData.copyBytes(to: bytes, from: index * elementSize ..< (index + 1) * elementSize)
         }
+        return result
     }
     
     // Returns the count of indices you can use with elementAt - that is either the number of elements, if there is an element buffer, or the number of vertices if drawing directly without one