Marcocheng Posted June 4, 2019 Share Posted June 4, 2019 (edited) Hello folks! I'm currently playing with pyro with volume displacement (Arnold), i have to convert my volume into vdb so that it can rendered with Arnold, i plug the convert VDB after my volume cache, rest and rest2 field turns zero. I wonder what causing that. I'm working with Houdini 16.5. Convert VDB sop remains default value and parameter. Before convertVDB: After convertVDB Hope for an anwser! Thanks! Also if there is a way to combine each scaler field into single vector field? thanks again Edited June 4, 2019 by Marcocheng Quote Link to comment Share on other sites More sharing options...
anim Posted June 4, 2019 Share Posted June 4, 2019 Your rest fields are probably empty, therefore VDB will contain 0 voxels as it ignored empty ones since it's sparse You can use VDB Vector Merge to combine float to vector fields 1 Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted June 4, 2019 Author Share Posted June 4, 2019 (edited) 23 minutes ago, anim said: Your rest fields are probably empty, therefore VDB will contain 0 voxels as it ignored empty ones since it's sparse You can use VDB Vector Merge to combine float to vector fields Thank you Tomas. Prehaps starting frame not equal 1 causing the empty rest field result? PS:emm i found offset the rest field works fine, thanks again! Edited June 4, 2019 by Marcocheng Quote Link to comment Share on other sites More sharing options...
Andrea Posted June 4, 2019 Share Posted June 4, 2019 @Marcocheng Do you mean offset the rest field in the pyro solver option? Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted June 4, 2019 Author Share Posted June 4, 2019 22 minutes ago, Andrea said: @Marcocheng Do you mean offset the rest field in the pyro solver option? correct. Since i have pre-roll in my sim, you definitely need to copy your creation frame number into rest field offset. Quote Link to comment Share on other sites More sharing options...
eunchae Posted April 29, 2020 Share Posted April 29, 2020 On 6/4/2019 at 4:19 PM, Marcocheng said: Hello folks! I'm currently playing with pyro with volume displacement (Arnold), i have to convert my volume into vdb so that it can rendered with Arnold, i plug the convert VDB after my volume cache, rest and rest2 field turns zero. I wonder what causing that. I'm working with Houdini 16.5. Convert VDB sop remains default value and parameter. Before convertVDB: After convertVDB Hope for an anwser! Thanks! Also if there is a way to combine each scaler field into single vector field? thanks again Could you please tell me how to use rest in Arnold? Quote Link to comment Share on other sites More sharing options...
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