A shader that creates a 3D object from up to four procedural shapes (spheres, boxes, cylinders, capsules, and toruses) combined through union, intersection, or subtraction. The MeshGenerator converts a collection of SDF primitives into a polygonal mesh using marching tetrahedra. It samples the scene on a configurable 3D grid, extracts the surface, and generates vertices, triangles, and normals, with resolution controlling the balance between mesh quality and performance.