From 49878ba83dc69c4ca4b59a10638743cf9f71d101 Mon Sep 17 00:00:00 2001
From: Ricky C <kf6kjg@users.noreply.github.com>
Date: Sun, 1 Aug 2021 18:23:44 -0700
Subject: [PATCH] Demonstrate Issue #10

---
 source/texturetest/Form1.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/texturetest/Form1.cs b/source/texturetest/Form1.cs
index 7939850..9581729 100644
--- a/source/texturetest/Form1.cs
+++ b/source/texturetest/Form1.cs
@@ -248,6 +248,14 @@ unsafe void CubeFS(byte* BGR, float* Attributes, int Index)
             int U = (int)(Clamp01(Attributes[0]) * textureWidthMinusOne);
             int V = (int)(Clamp01(Attributes[1]) * textureHeightMinusOne);
 
+            if (float.IsNaN(Attributes[0]) || float.IsNaN(Attributes[1]))
+            {
+                BGR[0] = 255;
+                BGR[1] = 0;
+                BGR[2] = 0;
+                return; // Set a breakpoint here to catch issue #10 in the act.
+            }
+
             *((int*)BGR) = TEXTURE_ADDR[U + V * textureHeight];
         }