From c2d646b9fa925ac2a91cb6cfb3fe6dad430c7927 Mon Sep 17 00:00:00 2001 From: Niko Tyni Date: Tue, 18 Jul 2023 15:16:21 +0100 Subject: [PATCH] Work around an imlib2 bug with alpha channel cloning As discussed in https://bugs.debian.org/1041406 imlib2 1.10.0 introduced a bug where imlib_clone_image() no longer copies the alpha flag. This breaks test 12 of t/simple.t : # Failed test at t/simple.t line 68. # got: '0' # expected: '1' Work around this on our side by checking for any difference after cloning and copying the alpha flag if necessary. Bug-Debian: https://bugs.debian.org/1040223 --- lib/Image/Imlib2.xs | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/lib/Image/Imlib2.xs b/lib/Image/Imlib2.xs index f48d4ec..cc54d2b 100644 --- a/lib/Image/Imlib2.xs +++ b/lib/Image/Imlib2.xs @@ -931,9 +931,20 @@ Imlib2_clone(image) CODE: { Imlib_Image cloned; + char alpha_orig; + char alpha_cloned; imlib_context_set_image(image); cloned = imlib_clone_image(); + + /* imlib2 no longer clones the alpha flag since 1.10 */ + alpha_orig = imlib_image_has_alpha(); + imlib_context_set_image(cloned); + alpha_cloned = imlib_image_has_alpha(); + if (alpha_orig != alpha_cloned) { + imlib_image_set_has_alpha(alpha_orig); + } + imlib_context_set_image(image); RETVAL = cloned; } -- 2.39.1