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Fix threshold value for imageCleanTransparent

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fixes #15401
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sfan5 2024-12-20 15:03:30 +01:00 committed by GitHub
parent a37bdbf8b7
commit 10f1e142f6
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1 changed files with 11 additions and 3 deletions
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14
src/client/imagesource.cpp
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@ -1511,10 +1511,18 @@ bool ImageSource::generateImagePart(std::string_view part_of_name,
CHECK_BASEIMG();
// Apply the "clean transparent" filter, if needed
/* Apply the "clean transparent" filter, if necessary
* This is needed since filtering will sample parts of the image
* that are transparent and PNG optimizers often discard the color
* information in those parts. */
if (m_setting_mipmap || m_setting_bilinear_filter ||
m_setting_trilinear_filter || m_setting_anisotropic_filter)
imageCleanTransparent(baseimg, 127);
m_setting_trilinear_filter || m_setting_anisotropic_filter) {
/* Note: in theory we should pass either 0 or 127 depending on
* if the texture is used with an ALPHA or ALPHA_REF material,
* however we don't have this information here.
* It doesn't matter in practice. */
imageCleanTransparent(baseimg, 0);
}
/* Upscale textures to user's requested minimum size. This is a trick to make
* filters look as good on low-res textures as on high-res ones, by making