From 0c1b29bd1a3e52f35f7ea10bdfecf1ff260766c5 Mon Sep 17 00:00:00 2001
From: Andy Adshead <andy.075109@hotmail.co.uk>
Date: Fri, 8 Mar 2019 13:53:25 +0000
Subject: [PATCH] Correctly calculates the number of itterations required to
 copy all the data from compressed textures

---
 Ryujinx.Graphics/Graphics3d/NvGpuEngineM2mf.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Ryujinx.Graphics/Graphics3d/NvGpuEngineM2mf.cs b/Ryujinx.Graphics/Graphics3d/NvGpuEngineM2mf.cs
index c0f444c379..45b0bbd792 100644
--- a/Ryujinx.Graphics/Graphics3d/NvGpuEngineM2mf.cs
+++ b/Ryujinx.Graphics/Graphics3d/NvGpuEngineM2mf.cs
@@ -151,6 +151,14 @@ namespace Ryujinx.Graphics.Graphics3d
                             dstCpp);
                     }
 
+                    // Calculate the bits per pixel
+                    int bpp = srcPitch / xCount;
+
+                    // Copying all the bits at the same time corrupts the texture, unknown why but probably because the texture isn't linear
+                    // To avoid this we will simply loop more times to cover all the bits,
+                    // this allows up to recalculate the memory locations for each iteration around the loop
+                    xCount *= bpp / srcCpp;
+
                     for (int y = 0; y < yCount; y++)
                     for (int x = 0; x < xCount; x++)
                     {