From a0aecd1ff85437890bb6a86fcc71fc90e80a4d24 Mon Sep 17 00:00:00 2001
From: BaronKiko <BaronKiko@users.noreply.github.com>
Date: Tue, 12 Mar 2019 04:59:12 +0000
Subject: [PATCH] Compressed M2mf texture copy fix (#612)

Correctly calculates the number of iterations 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 c0f444c3..45b0bbd7 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++)
                     {