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-rw-r--r--README5
1 files changed, 4 insertions, 1 deletions
diff --git a/README b/README
index 84010e4ecc..a055a20faf 100644
--- a/README
+++ b/README
@@ -479,7 +479,10 @@ using any form of anti-aliasing/linear filtering.
Note #3: The FmTowns version of Zak (zak256 target) uses an original resolution
of 320x240 - hence for this game scalers will scale to 640x480 or 960x720.
-Note #4: The OpenGL filter is included for
+Note #4: The OpenGL filter is included as a curiosity only. It's use is
+unsupported, and unrecommended. The only benefit is hardware accelerated
+scaling, but any machine with an OpenGL card should be fast enough to use
+the software scalers (see above).
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