Heightfield SDF, giving OCL error.

[vinyvince]

Hello!
That example look very interesting but i can't make it work.. For your heighfield SDF hip demo....
Cheers

3 errors generated.
OpenCL Exception: :337:27: error: use of undeclared identifier 'dirx'
int x1 = (int)(gidx + dirx[gid] * 10);
^
:338:27: error: use of undeclared identifier 'diry'
int y1 = (int)(gidy + diry[gid] * 10);
^
:403:42: error: used type 'float' where floating point type is not allowed
scratch[gid] = scratch_lastmask[gid] ? heightmin : density[gid];
~~~~~~~~~~~~~~~~~~~~~ ^
clBuildProgram (-11)