<div dir="ltr"><div>Hi devs,</div><div><br></div><div>When setting a shadow item for a label there's a "Blur only alpha pixels" option (see <a href="https://docs.qgis.org/testing/en/docs/user_manual/style_library/label_settings.html#shadow-tab">https://docs.qgis.org/testing/en/docs/user_manual/style_library/label_settings.html#shadow-tab</a>)</div><div>I'm unable to understand what it's supposed to do and there's a report in the docs source (<a href="https://github.com/qgis/QGIS-Documentation/issues/4264">https://github.com/qgis/QGIS-Documentation/issues/4264</a>) that mentions that it's a buggy feature. I can't tell but would like to know if anyone understands what this should do, and whether it does it. ;(<br></div><div><br></div><div>Seems that interesting/starting point codes might be <a href="https://github.com/qgis/QGIS/blob/129165a1001deb4b071c0b1d037e09d10f042ffc/src/core/qgstextrenderer.cpp#L1287">https://github.com/qgis/QGIS/blob/129165a1001deb4b071c0b1d037e09d10f042ffc/src/core/qgstextrenderer.cpp#L1287</a> or <a href="https://github.com/qgis/QGIS/blob/69e1b84b4c405a6b9fa7cfd2a72cf4c49a85f929/src/core/symbology/qgssymbollayerutils.cpp#L3722">https://github.com/qgis/QGIS/blob/69e1b84b4c405a6b9fa7cfd2a72cf4c49a85f929/src/core/symbology/qgssymbollayerutils.cpp#L3722</a></div><div><br></div><div>Thanks for your help,</div><div>Harrissou<br></div></div>