   shader performance (shaders vs no shader)
  HiDoes anyone know if CG shaders by default have performance implications? (improved or reduced performance).For example, would a simple vertex Gouraud shader run faster or slower than not using shaders (i.e. with OpenGL materials and colours).Thanks and happy new year!   
  I'm almost positive that CG shaders THAT ARE RUN ON THE GPU are an extreme performance increase, because the load is taken off the CPU.   ;  he was comparing hw ffp to hw shaders.on recent cards, shaders are actually faster, because you cod ehat you need exactly, and these cards implement the ffp in shaders anyway, so your more specific shader will be a performance win.   ;  Yes, vertex/pixel shaders in general are extremely fast (calculating per-pixel lighting for every polygon they ought to be fast), so using CG and provided your GFX card support it you should get a huge performance increase.CG is a bit special, so if your GFX card dosn't support something, CG will still try to accomplish the same task in software wich make it a lot slower depending on what you try to do.   ;  If you try to replicate the ffp exactly using shaders, the performance will be similar to slightly less.  Shaders shouldn't be able to outperform something that has had a long time to be optimized (like the ffp).   