nx_gx5_nearclip_gate.nx

nx_gx5_nearclip_gate.nx -- seq249 EAT-BY-BUILD: real NEAR-PLANE CLIPPING vs the old whole-triangle cull, measured HEAD-TO-HEAD on the identical scene. sg_project marks a vert invisible when its view z <= 0 and the rasterizers then drop the ENTIRE triangle, so ground straddling the camera plane VANISHES -- the hard seam eyeballed in the Gx-4 first playable (/world/gx4_walk_t5.png). sg_project_clip splits those triangles (Sutherland-Hodgman at z=SG_NEAR, interpolating position AND normal) so the surface stays continuous to the eye. The gate renders the SAME ground plane both ways: the OLD path is its own neg-control, and the far field must come out IDENTICAL (clipping may not touch geometry that never crosses the plane). license_tier: ORIGINAL expect_exit: 0