Nearly no shaiders :P... and some awards if i am not mistaking ^^... as long as the graphics looks good and the game works good... you can sell it.. but maybe you need a big name to sell many games but you will have to start somewhere

I cant think that RE4 would not ben sold if it did not contain any shader? O.o… the most noticeable shader they use are a water shader... and that is of course standard now… but else you don’t really need a shader… but it is a bonus if you got some, so that people with grate computer can fell that they have any need of there new super cool computers :P