Get this error message when trying to enable shaders:
dh_terrain.fsh: dh_terrain.fsh: ERROR: 0:365: Use of undeclared identifier 'dhProjection'
ERROR: 0:366: Use of undeclared identifier 'dhProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:381: Use of undeclared identifier 'iProjDiag'
ERROR: 0:381: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:382: Use of undeclared identifier 'viewPos'
ERROR: 0:382: Use of undeclared identifier 'viewPos'
ERROR: 0:366: Use of undeclared identifier 'dhProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:379: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:381: Use of undeclared identifier 'iProjDiag'
ERROR: 0:381: Use of undeclared identifier 'gbufferProjectionInverse'
ERROR: 0:382: Use of undeclared identifier 'viewPos'
ERROR: 0:382: Use of undeclared identifier 'viewPos'
