From 1fd1ec5664fdf6f29c04f2449cd3d8645e520661 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Wed, 26 Dec 2018 17:29:50 -0200
Subject: [PATCH] Do not attempt to read unused attribute, fix attributes count
 (#520)

---
 Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs | 2 +-
 Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs  | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs b/Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs
index 92bdd658..e6fb7ea1 100644
--- a/Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs
+++ b/Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs
@@ -878,7 +878,7 @@ namespace Ryujinx.Graphics.Gal.Shader
                 }
             }
 
-            if (DeclInfo.Index >= 16)
+            if (DeclInfo.Index >= 32)
             {
                 throw new InvalidOperationException($"Shader attribute offset {Abuf.Offs} is invalid.");
             }
diff --git a/Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs b/Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs
index 6fb038ac..fefd2e67 100644
--- a/Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs
+++ b/Ryujinx.Graphics/Graphics3d/NvGpuEngine3d.cs
@@ -734,6 +734,11 @@ namespace Ryujinx.Graphics.Graphics3d
 
                 long VbPosition = MakeInt64From2xInt32(NvGpuEngine3dReg.VertexArrayNAddress + ArrayIndex * 4);
 
+                if (VbPosition == 0)
+                {
+                    continue;
+                }
+
                 bool IsConst = ((Packed >> 6) & 1) != 0;
 
                 int Offset = (Packed >> 7) & 0x3fff;