Normals' baker from multires mesh #27331

New Issue

Sergey Sharybin · 2011-05-08T18:03:31+02:00

Sergey Sharybin commented

2011-05-08 18:03:31 +02:00

%%%Hi everybody!

Last few weeks Morten Mikkelsen and me were working under baker, which could bake normals directly from mesh with multi-resolution modifier without using much of additional memory. Now, we've got quite usable patch.

To use new baker you should choose "Sculpt baker" in Baker panel, select object with sculpted data on multires modifier, choose subdivision level you want to bake to and hit "Bake". Note, that mesh should be unwrapped and texture should be assigned to this UV map.

Baking happens in "locked" mode, so there'll be no UI refresh during baking (that's the downside of not using additional memory).

Some additional work is needed before we could say "yep, it's finished and could be commited", but you could alreayd have fun!%%%

%%%Hi everybody! Last few weeks Morten Mikkelsen and me were working under baker, which could bake normals directly from mesh with multi-resolution modifier without using much of additional memory. Now, we've got quite usable patch. To use new baker you should choose "Sculpt baker" in Baker panel, select object with sculpted data on multires modifier, choose subdivision level you want to bake to and hit "Bake". Note, that mesh should be unwrapped and texture should be assigned to this UV map. Baking happens in "locked" mode, so there'll be no UI refresh during baking (that's the downside of not using additional memory). Some additional work is needed before we could say "yep, it's finished and could be commited", but you could alreayd have fun!%%%

Sergey Sharybin commented

2011-05-08 18:03:31 +02:00

Changed status to: 'Open'

ronan ducluzeau commented

2011-05-08 20:30:39 +02:00

%%%ubuntu 11.04 64bits

I gave it a quick try with a sculpted default cube.
Having a good result is easier than with a selected to active workflow.

It does not work correctly when multires preview level is lower or higher than bake level.%%%

%%%ubuntu 11.04 64bits I gave it a quick try with a sculpted default cube. Having a good result is easier than with a selected to active workflow. It does not work correctly when multires preview level is lower or higher than bake level.%%%

Sergey Sharybin commented

2011-05-08 21:02:08 +02:00

%%%Yep, it was issue with space transformation here.. I was thinking about additional check to prevent baking to higher level. Or this would not good solution?%%%

Sergey Sharybin commented

2011-05-10 21:13:32 +02:00

%%%Re-newed patch. Fixed issues with baking to multiplie textures and fixed minor issue with lo-res mesh.%%%

Sergey Sharybin commented

2011-05-11 20:54:42 +02:00

%%%Patch which is almost ready to commit is attached. Ni functional changes -- just styling.%%%

Sergey Sharybin commented

2011-05-15 17:46:21 +02:00

%%%Next version of patch: with some minor fixes and implementation of heights baking.

Baker could now switch to job-related work and "Cancel" button would be shown for it, but it still needs object editing (and probably 3dview refresh freeze), so this option is disabled by default.%%%

%%%Next version of patch: with some minor fixes and implementation of heights baking. Baker could now switch to job-related work and "Cancel" button would be shown for it, but it still needs object editing (and probably 3dview refresh freeze), so this option is disabled by default.%%%

Sergey Sharybin commented

2011-05-16 09:31:44 +02:00

%%%Oops, One uninitialized memory usage issue fixed.%%%

Sergey Sharybin commented

2011-05-16 20:22:43 +02:00

%%%After Brecht's review some things were changed. fixed, improved:

Now baking happens from highest level of multires to current viewport level
To bake using sculpt-baker you should:
1. choose what you want to bake (normals/displacement).
2. enable "Bake from Multires" checkbox.
Baking became thread-safe due to it shouldn't share hi-res mesh used in viewport and holds it's own hi-res and lo-res versions (lo-res doesn't add so many memory overhead). Now you've got progress bar and "Cancel" button.
I've found incorrect calculation when using "Smooth Heights" option. Not it should behave correct.
Now baking happens for all selected objects (be careful due to hi-res mesh for each of them would be stored in memory at the same time).

Looks like list of major things is over.%%%

%%%After Brecht's review some things were changed. fixed, improved: - Now baking happens from highest level of multires to current viewport level - To bake using sculpt-baker you should: 1) choose what you want to bake (normals/displacement). 2) enable "Bake from Multires" checkbox. - Baking became thread-safe due to it shouldn't share hi-res mesh used in viewport and holds it's own hi-res and lo-res versions (lo-res doesn't add so many memory overhead). Now you've got progress bar and "Cancel" button. - I've found incorrect calculation when using "Smooth Heights" option. Not it should behave correct. - Now baking happens for all selected objects (be careful due to hi-res mesh for each of them would be stored in memory at the same time). Looks like list of major things is over.%%%

Sergey Sharybin commented

2011-05-17 10:58:42 +02:00

%%%- Fixed incorrect image cleaning when baking multiple objects

Fixed incorrect JobData structure which lead to incorrect baking several objects and memory leak%%%

%%%- Fixed incorrect image cleaning when baking multiple objects - Fixed incorrect JobData structure which lead to incorrect baking several objects and memory leak%%%

Sergey Sharybin commented

2011-05-18 17:21:28 +02:00

%%%Next step in making patch ok to be commited.%%%