hey everyone i am new to game studio... but i ran into some small problems that i think in theory can be fixed with shaders...

first is tga alpha... when used in certain situations.. for example a model of some hair... if there is layers in the hair.. like finial fantasy X.. that overlap both using the same alpha channel.. there is some problem with the z axis.. mixing up what goes in front.. almost as if the normals were flipped... could a shader with transparency handle this better???

the other main problem is the engine rendering the inside of the model... i can fake it by copying the faces and flipping them.. but this is bad for poly count and doubles the the count of the model... can shaders be written to render double sided polies???

those are my two questions please help...