From cb26d050921bef3095b26436b66401a4c5eac151 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Wed, 3 Jul 2024 19:58:49 +0200
Subject: [PATCH] Math: adapt ColorBatch BCn ground truth test files to bcdec
 changes.

It fixed interpolation for a more precise rounding, which means the
ground truth files for this test are now off-by-one compared to before.
In particular, nothing in the _source_ BCn data or the Y-flip algorithm
changed, it's just that they're now decoded to RGBA differently by bcdec
so the tests fail.
---
 .../Math/Test/ColorBatchTestFiles/README.md     |  10 ++++++----
 .../Math/Test/ColorBatchTestFiles/bc1.png       | Bin 232 -> 237 bytes
 .../Math/Test/ColorBatchTestFiles/bc3.png       | Bin 189 -> 190 bytes
 .../ColorBatchTestFiles/checkerboard-odd.png    | Bin 412 -> 411 bytes
 .../Test/ColorBatchTestFiles/checkerboard.png   | Bin 355 -> 355 bytes
 5 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/README.md b/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
index 3997ac0d0..4f945cbe5 100644
--- a/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
+++ b/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
@@ -12,11 +12,13 @@ blocks.
 
 Both are then passed through StbDxtImageConverter and subsequently decoded
 back to `checkerboard.png` and `checkerboard-odd.png` with
-`compress-format-blocks.py` to act as a ground truth, the output of the script
-and its full invocation is pasted to the `ColorBatchTest.cpp`.
+`format-block-data.py` to act as a ground truth. The full invocation is listed
+for each particular case in `ColorBatchTest.cpp`, the output of the script is
+then right below.
 
-The remaining images are generated with `extract-interesting-blocks.py`, the
-output of that script and its full invocation is again in `ColorBatchTest.cpp`.
+The remaining `bc*.png` images are generated with
+`extract-interesting-blocks.py`, the full invocation for each particular case
+and the generated output is again in `ColorBatchTest.cpp`.
 
 Unlike in other tests, the images are PNGs and not TGAs. The full test process
 requires `BcDecImageConverter` from the plugins repo anyway, so there's no
diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png b/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png
index 31440d67423466792e729918e7c7bc731b3ddb25..3e04000969d826dba333b76f424960ad6e4c03b8 100644
GIT binary patch
delta 209
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delta 204
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diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png b/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png
index f0ebe3c200c7fa9e1dbda9d4e5669dddaab3f246..83fbaf89bfabd6b74f4a648ec5917239a28b8273 100644
GIT binary patch
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delta 161
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diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png
index 46a97126c83528377d512c0508270f6c7e6bf6fb..99fb0bba11299df25697c120b73feaf89bbb3061 100644
GIT binary patch
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delta 385
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diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png
index b294507bad11ca3e89d37f350193c7391e844f24..d2f4c0ae42d25a719a828b4b5cbbc389d7a76917 100644
GIT binary patch
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delta 188
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