[Soc-2010-dev] Status report for multires

Fri Jul 23 20:57:47 CEST 2010

Status report for July 17 - 23:
* Finished merging from trunk, although there are still some weird
issues to track down.
* Multires vpaint is working:
* * Note that most of this work is not committed yet, I need to check
over it first
* * I had to do some rethinking of the CustomData / Multires data /
CCGDM data interaction; what made sense for paintmasks did not
entirely work for colors. So mcuh of the work was just figuring out a
better design there, once that was done multires vpaint fell into
place pretty quick.
* * Overview of how I changed things:
* * * Instead of using CustomData to store multires disps for masks
and colors, I added a small CustomDataMultires struct. It's similar to
CustomData, but very very cut down and restricted to just what
multires needs. This avoids making lots of small changes to
CustomData, and clarifies the code.
* * * Made it possible to turn multires on and off for individual
CustomData layers. This is needed for memory reasons; e.g. a user
might want to sculpt a multires model but leave vertex colors at the
base level (not multires editable.)
* * * In order to keep everything in sync between CustomData,
CustomDataMultires, and the grid data, I've started using
CustomDataLayer type and name as a unique key.
* * Right now things are still sort of hacky, and multires vpaint is
limited in what it can do, but the basics are in place now.
* * Most importantly, new video! http://vimeo.com/13581943 (Vimeo is
apparently dealing with a large backlog today, but hopefully the video
will appear eventually.)

Plans for next week:
* Continue working on vpaint.
* * Multires vpaint needs the other brush types still (just mix working atm)
* * Enable partial redraw for vpaint, should be fairly easy since it
works same as sculpt
* * Continue enabling features for vpaint, like textures, symmetry, masking...

-Nicholas

On Sat, Jul 17, 2010 at 9:38 PM, Nicholas Bishop
<nicholasbishop at gmail.com> wrote:
> Status report for July 10 - 16:
> Not a huge amount of work finished this week:
> * Fixed some new vpaint/sculpt bugs
> * Brought back some vpaint features for pbvh vpaint
> * Currently working on merging up to latest trunk; there's a lot more
> conflicts to deal with due to the recent merge of Jason's branch to
> trunk.
>
> Next week:
> * Finish dealing with conflicts from trunk
> * Continue working on vpaint, mostly the same list of things to fix:
> * * Partial redraw
> * * Multires
> * * Blur
> * * Normals/Spray
> * * Textures
> * * Masks
> * * Undo
>
> -Nicholas
>
>> On Sat, Jul 3, 2010 at 3:45 PM, Nicholas Bishop
>> <nicholasbishop at gmail.com> wrote:
>>> Fixed, thanks.
>>>
>>> On Sat, Jul 3, 2010 at 3:29 PM, Tom M <letterrip at gmail.com> wrote:
>>>> permissions are currently private....
>>>>
>>>> On Sat, Jul 3, 2010 at 11:24 AM, Nicholas Bishop
>>>> <nicholasbishop at gmail.com> wrote:
>>>>> Here's the video:
>>>>> http://vimeo.com/13060555
>>>>>
>>>>> -Nicholas
>>>>>
>>>>> On Sat, Jul 3, 2010 at 2:16 PM, Nicholas Bishop
>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>> Status report for June 26 - July 2:
>>>>>> * Fixed lots of bugs, crashers, memory leaks
>>>>>> * Performance improvements for masks (only updating color buffers, and
>>>>>> vice versa for regular sculpt brushes)
>>>>>> * Added a checkbox to enable/disable mask layers
>>>>>> * Added a 'strength' slider for masks layers, changes how much the
>>>>>> mask attenuates the brush, and shows the mask onscreen as more
>>>>>> transparent
>>>>>> * Added a new operator to convert a texture to a mask using MTex for
>>>>>> mapping the texture to the mesh. (This one took a while for me to
>>>>>> figure out, but I think what's there should be pretty robust now.)
>>>>>>
>>>>>> Plans for next week:
>>>>>> * According to my schedule, the time allocated for masks is up! So
>>>>>> this week I really do move on to new tasks.
>>>>>> * From the schedule, multires for vertex colors is next, but I'm going
>>>>>> to work on vertex layers for sculpt first, since it ties into mask
>>>>>> layers a lot.
>>>>>> * I'm starting vertex layers today, putting in basic infrastructure
>>>>>> first (again, similar to mask layers)
>>>>>>
>>>>>> I have another screencast to share, but I'm having some trouble
>>>>>> uploading to Vimeo; I'll send another mail once that's done.
>>>>>>
>>>>>> -Nicholas
>>>>>>
>>>>>> On Sat, Jun 26, 2010 at 2:16 AM, Nicholas Bishop
>>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>>> Status report for June 19 - June 25:
>>>>>>> * Mask layers committed
>>>>>>> * * Works with both regular and multires meshes
>>>>>>> * * Works with sculpt undo
>>>>>>> * * Has a simple UI
>>>>>>>
>>>>>>> Plans for next week:
>>>>>>> * Make masking better
>>>>>>> * * First priority is to fix masking bugs that have been reported on the forums
>>>>>>> * * More options to control layers, such as layer opacity
>>>>>>> * * Then maybe can move on to coord layers
>>>>>>>
>>>>>>> Also, I probably won't be able to make the Sunday meeting this week.
>>>>>>>
>>>>>>> -Nicholas
>>>>>>>
>>>>>>>
>>>>>>> On Sat, Jun 19, 2010 at 12:32 PM, Nicholas Bishop
>>>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>>>> Whoopsies, fell asleep last night without writing the report :)
>>>>>>>>
>>>>>>>> Status reprot for June 12 - 18:
>>>>>>>> * Brought back mesh hiding. Ctrl+Alt+LMB now hides a rectangular area
>>>>>>>> of the sculpt mesh, Ctrl+Shift+LMB does the same but hides outside the
>>>>>>>> rectangle.
>>>>>>>> * * This works very different from 2.4, now it just rebuilds the PBVH
>>>>>>>> with some primitives excluded, much cleaner.
>>>>>>>> * Fixed undo for masks in sculpt
>>>>>>>> * Committed fixes for various bugs
>>>>>>>> * Started work on mask layers, this will also create the foundation
>>>>>>>> for multiple coord layers and such
>>>>>>>> * * Created a basic UI in the same style as vertex groups and shape keys
>>>>>>>> * * Started adding support for mask layers on non-multires meshes:
>>>>>>>> * * * Added operator to create new mask layers
>>>>>>>> * * * Sculpt's mask brush and the mask_set operator can be used to
>>>>>>>> independently edit any of the layers
>>>>>>>> * * * gpu_buffers combines the mask layers additively for display
>>>>>>>>
>>>>>>>> Plans for next week:
>>>>>>>> * Continue working on mask layers
>>>>>>>> * * Make regular sculpt brushes interact with multiple mask layers
>>>>>>>> * * Add a way to toggle mask layers on and off
>>>>>>>> * * Add a delete mask layer operator
>>>>>>>> * * Make mask layers work with multires
>>>>>>>> * After that I'll either start working on coord layers or masks for vpaint
>>>>>>>>
>>>>>>>> Schedule:
>>>>>>>> On track.
>>>>>>>>
>>>>>>>> -Nicholas
>>>>>>>>
>>>>>>>> On Fri, Jun 11, 2010 at 11:49 PM, Nicholas Bishop
>>>>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>>>>> Status report for June 5 - 11:
>>>>>>>>> * Finally have a good base done and committed to build on:
>>>>>>>>> * Committed the stuff I talked about last week
>>>>>>>>> * Modified CCGSubsurf so it can subdivide more than just coordinates
>>>>>>>>> (used currently for masks)
>>>>>>>>> * Modified multires to support updating masks
>>>>>>>>> * Mask layer can be filled, cleared, inverted
>>>>>>>>> * Sculpt brushes now work with masks
>>>>>>>>> * Added a mask brush to sculpt to edit masks
>>>>>>>>> * Wrote some basic release notes:
>>>>>>>>> http://wiki.blender.org/index.php/User:Nicholasbishop/SummerOfCode2010/Release_Notes
>>>>>>>>> * Not related specifically to my gsoc project, fixed various bugs in trunk.
>>>>>>>>>
>>>>>>>>> Plans for next week:
>>>>>>>>> * I'm looking now at bringing back the mesh hiding feature from 2.4x
>>>>>>>>> (LMB+Ctrl+Shift).
>>>>>>>>> ** This time no ugliness with mesh reordering, I plan for it all to go
>>>>>>>>> through the PBVH and support multires nicely too.
>>>>>>>>> * Plan to look at undo with masks and saving masks.
>>>>>>>>> * If there's time, start working on vpaint.
>>>>>>>>>
>>>>>>>>> Schedule:
>>>>>>>>> On track.
>>>>>>>>>
>>>>>>>>> -Nicholas
>>>>>>>>>
>>>>>>>>> On Fri, Jun 4, 2010 at 11:26 PM, Nicholas Bishop
>>>>>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>>>>>> Status report for May 29 - June 4:
>>>>>>>>>> * Lots of code written, very little committed.
>>>>>>>>>> * Things that work:
>>>>>>>>>> ** Building a customdata mask layer for non-multires meshes
>>>>>>>>>> ** Displaying the mask layer with VBO for both regular and multires
>>>>>>>>>> meshes (non-VBO still todo)
>>>>>>>>>> ** Subdividing the original mesh mask layer (for multires)
>>>>>>>>>> * In progress:
>>>>>>>>>> ** Updating the multires mask layer so that changes actually stick (as
>>>>>>>>>> well as subdividing higher levels)
>>>>>>>>>>
>>>>>>>>>> Today I also spent some time getting Valgrind to work properly on my
>>>>>>>>>> machine. It spews millions of errors (literally) due to my graphics
>>>>>>>>>> drivers, but I mucked about with the suppressions files and now I get
>>>>>>>>>> relatively sane output. Already found a bug in the VBO code this way
>>>>>>>>>> :)
>>>>>>>>>>
>>>>>>>>>> I feel like I'm making good progress here, but I keep having a-ha
>>>>>>>>>> moments where I realize I was doing something stupid.
>>>>>>>>>>
>>>>>>>>>> Plans for next week:
>>>>>>>>>> * Continue working on the in-progress item above. This might happen in
>>>>>>>>>> the next few minutes, or the next few days. Definitely feel close
>>>>>>>>>> though.
>>>>>>>>>> * Break apart the work I've done so far and commit in smaller chunks.
>>>>>>>>>> * If I get both those done, I'll make masks actually have an effect in
>>>>>>>>>> sculpt mode (very easy, basically just multiply one extra value per
>>>>>>>>>> vertex/grid point.)
>>>>>>>>>>
>>>>>>>>>> -Nicholas
>>>>>>>>>>
>>>>>>>>>> On Fri, May 28, 2010 at 6:41 PM, Nicholas Bishop
>>>>>>>>>> <nicholasbishop at gmail.com> wrote:
>>>>>>>>>>> Status report for May 24-28:
>>>>>>>>>>> * Committed only some very basic things like new CustomData types, and
>>>>>>>>>>> for masks, a test UI and test operator.
>>>>>>>>>>> * Relearned how the various DerivedMeshes work with modifiers and CustomData.
>>>>>>>>>>> * Started modifying gpu_buffers to add a color buffer, will be used
>>>>>>>>>>> first for displaying masks.
>>>>>>>>>>>
>>>>>>>>>>> Plans for next week:
>>>>>>>>>>> * Finish the color buffer code. Once this is done it becomes much
>>>>>>>>>>> easier to test everything else, since results will be visible on the
>>>>>>>>>>> mesh.
>>>>>>>>>>> * Continue work on facegrid CustomData so that it interacts with CCGDM
>>>>>>>>>>> correctly, and then with MultiresDM.
>>>>>>>>>>>
>>>>>>>>>>> -Nicholas
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>> _______________________________________________
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>>>>> Soc-2010-dev at blender.org
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>>>>>
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>>>
>>
>