*

2025-05-13 02:59:41 +03:00
parent 1260390353
commit 5f03062f42
18 changed files with 1249 additions and 0 deletions
@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace FireTools {
+    public static class TextureSwizzling {
+        public static byte[] Swizzle(byte[] data, int width, int height, int blockSize) {
+            return DoSwizzle(data, width, height, blockSize, false);
+        }
+
+        public static byte[] UnSwizzle(byte[] data, int width, int height, int blockSize) {
+            return DoSwizzle(data, width, height, blockSize, true);
+        }
+
+        private static byte[] DoSwizzle(byte[] data, int width, int height, int blockSize, bool unswizzle) {
+            var processed = new byte[data.Length];
+            var heightTexels = height / 4;
+            var heightTexelsAligned = (heightTexels + 7) / 8;
+            int widthTexels = width / 4;
+            var widthTexelsAligned = (widthTexels + 7) / 8;
+            var dataIndex = 0;
+
+            for (int y = 0; y < heightTexelsAligned; ++y) {
+                for (int x = 0; x < widthTexelsAligned; ++x) {
+                    for (int t = 0; t < 64; ++t) {
+                        int pixelIndex = SpaceFillingCurve.Morton2D(t, 8, 8);
+                        int num8 = pixelIndex / 8;
+                        int num9 = pixelIndex % 8;
+                        var yOffset = (y * 8) + num8;
+                        var xOffset = (x * 8) + num9;
+
+                        if (xOffset < widthTexels && yOffset < heightTexels) {
+                            var destPixelIndex = yOffset * widthTexels + xOffset;
+                            int destIndex = blockSize * destPixelIndex;
+
+                            if (unswizzle)
+                                Array.Copy(data, dataIndex, processed, destIndex, blockSize);
+                            else
+                                Array.Copy(data, destIndex, processed, dataIndex, blockSize);
+                        }
+
+                        dataIndex += blockSize;
+                    }
+                }
+            }
+
+            return processed;
+        }
+    }
+}