Added a comment about XS 4bit pixel support
diff --git a/Demo/sgi/video/VFile.py b/Demo/sgi/video/VFile.py
index daba6a0..9e1eb36 100755
--- a/Demo/sgi/video/VFile.py
+++ b/Demo/sgi/video/VFile.py
@@ -158,6 +158,10 @@
# XXX Temporarily disabled, since it is unclear which machines support
# XXX which pixelsizes.
#
+# XXX The XS appears to support 4 bit pixels, but (looking at osview) it
+# XXX seems as if the conversion is done by the kernel (unpacking ourselves
+# XXX is faster than using PM_SIZE=4)
+#
def support_packed_pixels():
return 0 # To be architecture-dependent