1 files changed, 60 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Texture/BCnEncoder.cs b/Ryujinx.Graphics.Texture/BCnEncoder.cs
new file mode 100644
index 00000000..02b79c1b
--- /dev/null
+++ b/Ryujinx.Graphics.Texture/BCnEncoder.cs
@@ -0,0 +1,60 @@
+using Ryujinx.Common;
+using Ryujinx.Graphics.Texture.Encoders;
+using System;
+
+namespace Ryujinx.Graphics.Texture
+{
+    public static class BCnEncoder
+    {
+        private const int BlockWidth = 4;
+        private const int BlockHeight = 4;
+
+        public static byte[] EncodeBC7(byte[] data, int width, int height, int depth, int levels, int layers)
+        {
+            int size = 0;
+
+            for (int l = 0; l < levels; l++)
+            {
+                int w = BitUtils.DivRoundUp(Math.Max(1, width >> l), BlockWidth);
+                int h = BitUtils.DivRoundUp(Math.Max(1, height >> l), BlockHeight);
+
+                size += w * h * 16 * Math.Max(1, depth >> l) * layers;
+            }
+
+            byte[] output = new byte[size];
+
+            int imageBaseIOffs = 0;
+            int imageBaseOOffs = 0;
+
+            for (int l = 0; l < levels; l++)
+            {
+                int rgba8Size = width * height * depth * layers * 4;
+
+                int w = BitUtils.DivRoundUp(width, BlockWidth);
+                int h = BitUtils.DivRoundUp(height, BlockHeight);
+
+                for (int l2 = 0; l2 < layers; l2++)
+                {
+                    for (int z = 0; z < depth; z++)
+                    {
+                        BC7Encoder.Encode(
+                            output.AsMemory().Slice(imageBaseOOffs),
+                            data.AsMemory().Slice(imageBaseIOffs),
+                            width,
+                            height,
+                            EncodeMode.Fast | EncodeMode.Multithreaded);
+
+                        imageBaseIOffs += width * height * 4;
+                        imageBaseOOffs += w * h * 16;
+                    }
+                }
+
+                width = Math.Max(1, width >> 1);
+                height = Math.Max(1, height >> 1);
+                depth = Math.Max(1, depth >> 1);
+            }
+
+            return output;
+        }
+    }
+}
+\ No newline at end of file