Const raymarch_depth_frag
raymarch_depth_frag: "#include <raymarch_fog_pars_fragment>#include <raymarch_common_pars_fragment>#include <ray_pars_fragment>#include <distance_pars_fragment>#include <raymarch_pars_fragment>void main(void) {#include <raymarch_fragment>#include <raymarch_write_depth_fragment>gl_FragColor = vec4(vec3(1.0 - gl_FragDepthEXT), opacity);}" = `#include <raymarch_fog_pars_fragment>#include <raymarch_common_pars_fragment>#include <ray_pars_fragment>#include <distance_pars_fragment>#include <raymarch_pars_fragment>void main(void) {#include <raymarch_fragment>#include <raymarch_write_depth_fragment>gl_FragColor = vec4(vec3(1.0 - gl_FragDepthEXT), opacity);}`