The invention concerns a method for producing a coating on a support, in particular a glass support, wherein a thin-film metal oxide is deposited on the support, said thin film being subjected to an etching process to roughen its surface, a second coating capable of adhering to the first metal oxide film is then applied on the roughened surface. The invention is characterized in that it consists in depositing a first doped metal oxide or metal oxynitride doped with at least a second metal oxide or metal oxynitride, the second metal oxide or metal oxynitride being distributed in the deposited film. During the etching process, a plasma-activated gas is used which removes at least a second metal oxide or metal oxynitride less than the first metal oxide or metal oxynitride so as to form, after the etching process, on the surface raised irregularities consisting of at least a second metal oxide or metal oxynitride.