From eb0781fda0bc31c5397a8a4fff3ce45fa4a8aef2 Mon Sep 17 00:00:00 2001
From: Sean Barrett <sean2@nothings.org>
Date: Mon, 18 Aug 2014 09:01:33 -0700
Subject: [PATCH] add comments describing the purpose of the s,t-rectangle
 tests

---
 tests/resample_test.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/resample_test.cpp b/tests/resample_test.cpp
index ac9e200..2a87eca 100644
--- a/tests/resample_test.cpp
+++ b/tests/resample_test.cpp
@@ -350,6 +350,7 @@ void test_premul(const char* file)
 	free(output_data);
 }
 
+// test that splitting a pow-2 image into tiles produces identical results
 void test_subpixel_1()
 {
 	unsigned char image[8 * 8];
@@ -379,6 +380,7 @@ void test_subpixel_1()
 	}
 }
 
+// test that replicating an image and using a subtile of it produces same results as wraparound
 void test_subpixel_2()
 {
 	unsigned char image[8 * 8];
@@ -415,6 +417,7 @@ void test_subpixel_2()
 	}}
 }
 
+// test that 0,0,1,1 subpixel produces same result as no-rect
 void test_subpixel_3()
 {
 	unsigned char image[8 * 8];
@@ -437,6 +440,7 @@ void test_subpixel_3()
 	}
 }
 
+// test that 1:1 resample using s,t=0,0,1,1 with bilinear produces original image
 void test_subpixel_4()
 {
 	unsigned char image[8 * 8];