docs: document yet another viewperf bug
diff --git a/docs/viewperf.html b/docs/viewperf.html
index bb38527..c294255 100644
--- a/docs/viewperf.html
+++ b/docs/viewperf.html
@@ -67,7 +67,7 @@
-<h2>sw-02 tests 1, 2, 4</h2>
+<h2>sw-02 tests 1, 2, 4, 6</h2>
<p>
These tests depend on the
@@ -81,6 +81,19 @@
</p>
+
+<h2>sw-02 test 6</h2>
+
+<p>
+The lines drawn in this test appear in a random color.
+That's because texture mapping is enabled when the lines are drawn, but no
+texture image is defined (glTexImage2D() is called with pixels=NULL).
+Since GL says the contents of the texture image are undefined in that
+situation, we get a random color.
+</p>
+
+
+
<h2>Lightwave-01 test 3</h2>
<p>