dcl_input ?

Discussion created by rahulgarg on Jun 18, 2008
Latest reply on Jun 18, 2008 by rahulgarg
can somebody explain this instruction?

I am having a hard time wrapping my head around dcl_input.
Can somebody explain what it does and why its required?
Secondly can someone explain the registers vWinCoord0 and v0,v1 etc?
They appear to be special registers.

Note that I am not from a graphics background so please avoid graphics related explainations.