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OpenEXR: Add support for HTJ2K encoding

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This is a new lossless encoding in OpenEXR 3.4 based on high throuhput
JPEG 2000. It produces somewhat smaller files than other lossless
compression methods, but is very new and not widely supported yet by
other software.

Pull Request: https://projects.blender.org/blender/blender/pulls/153292
This commit is contained in:
Brecht Van Lommel 2026-01-25 14:25:57 +01:00 • committed by Brecht Van Lommel
parent 4ccc711695
commit 497440cb39
22 changed files with 68 additions and 1 deletions
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6
tests/python/bl_imbuf_save.py
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@ -129,6 +129,9 @@ class ImBufSaveTest(ImBufTest):
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "BW", "color_depth": "32", "exr_codec": "DWAB", "quality": 97})
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGB", "color_depth": "32", "exr_codec": "DWAA", "quality": 97})
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGBA", "color_depth": "32", "exr_codec": "ZIP"})
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "BW", "color_depth": "16", "exr_codec": "HTJ2K"})
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGB", "color_depth": "16", "exr_codec": "HTJ2K"})
self.check(src="rgba08", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGBA", "color_depth": "32", "exr_codec": "HTJ2K"})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "BW", "color_depth": "16", "exr_codec": "ZIP"})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGB", "color_depth": "16", "exr_codec": "DWAA", "quality": 97})
@ -136,6 +139,9 @@ class ImBufSaveTest(ImBufTest):
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "BW", "color_depth": "32", "exr_codec": "DWAB", "quality": 97})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGB", "color_depth": "32", "exr_codec": "DWAA", "quality": 97})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGBA", "color_depth": "32", "exr_codec": "ZIP"})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "BW", "color_depth": "16", "exr_codec": "HTJ2K"})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGB", "color_depth": "16", "exr_codec": "HTJ2K"})
self.check(src="rgba32", ext="exr", settings={"file_format": "OPEN_EXR", "color_mode": "RGBA", "color_depth": "32", "exr_codec": "HTJ2K"})
def test_save_hdr(self):
self.check(src="rgba08", ext="hdr", settings={"file_format": "HDR", "color_mode": "BW"})