This bug occurred on my Intel Arc card, which I recently sold, and now occurs on my new Radeon RX 6700 XT. It appears to be using GBM or similar bitmaps without the scanout flag, and thus ends up in whatever compressed format that Mesa is using. Though you may tell me it's my compositor (Wayfire) that's using the wrong mode for fullscreen windows. I am using the Proton-TkG builds supplied through ProtonUp-Qt, which pull directly from the CI service.
This bug occurred on my Intel Arc card, which I recently sold, and now occurs on my new Radeon RX 6700 XT. It appears to be using GBM or similar bitmaps without the scanout flag, and thus ends up in whatever compressed format that Mesa is using. Though you may tell me it's my compositor (Wayfire) that's using the wrong mode for fullscreen windows. I am using the Proton-TkG builds supplied through ProtonUp-Qt, which pull directly from the CI service.