1. A computer-implemented method for rasterizing geometry, the method comprising: defining a first bounding primitive that covers first geometry and does not include any internal edges; in response to determining that the first bounding primitive intersects an enabled clip plane included in a first plurality of clip planes, generating one or more fragments to fill substantially all of a current viewport; defining a second bounding primitive that covers second geometry and does not include any internal edges; and in response to determining that the second bounding primitive does not intersect any enabled clip plane included in a second plurality of clip planes, generating one or more fragments to fill the second bounding primitive.