libgui|ModelDrawable: Convert 24-bit images to 32-bit for the atlas
The model texture atlas has an alpha channel, so 24-bit textures mustbe converted before storing them in the atlas.
View differences
libgui|ModelDrawable: Convert 24-bit images to 32-bit for the atlas
The model texture atlas has an alpha channel, so 24-bit textures must
be converted before storing them in the atlas.