From ade68fe9e15e85d3b3653521aa3813c45fd48eec Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <jakob@collabora.com>
Date: Wed, 25 Sep 2019 22:20:04 +0100
Subject: [PATCH] aux/tracking: Comment

---
 src/xrt/auxiliary/tracking/t_calibration.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/xrt/auxiliary/tracking/t_calibration.cpp b/src/xrt/auxiliary/tracking/t_calibration.cpp
index 89b9a2020..42129bf54 100644
--- a/src/xrt/auxiliary/tracking/t_calibration.cpp
+++ b/src/xrt/auxiliary/tracking/t_calibration.cpp
@@ -381,7 +381,7 @@ make_calibration_frame(class Calibration &c)
 	int cols = rgb.cols / 2;
 	int rows = rgb.rows;
 
-	// split left and right eyes
+	// Split left and right eyes, don't make any copies.
 	cv::Mat l_grey(rows, cols, CV_8UC1, grey.data, grey.cols);
 	cv::Mat r_grey(rows, cols, CV_8UC1, grey.data + cols, grey.cols);
 	cv::Mat l_rgb(rows, cols, CV_8UC3, c.gui.frame->data,
-- 
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