GPU Pro 4

3

III

Second-Depth Antialiasing

Emil Persson

3.1 Introduction and Previous Work

For nearly a decade multisampling was the one and only antialiasing solution for

real-time rendering. For most of this time, multisampling was never challenged

because it worked relatively well. As rendering technology has developed and

engines become more advanced, multisampling has become an increasingly big-

ger stumbling block and maintenance problem when developing new rendering

techniques. With the recent popularization of deferred shading, the memory in-

efficiency of multisample antialiasing (MSAA) has further been magnified to a

point where it becomes impractical, in