[Bf-gamedev] Cycles Baking Development

[metalliandy]

Awesome work, Dalai.

I have spoken to you about this on IM but I figured it would be good to 
get this on the list too, so please forgive any overlap between the list 
and our conversations. :)

 1. Any ideas when we are going to get to see the cages? This shouldn't
    ship with Blender until we can see how far the cages are extruding.
    The cage feature should definetly be a modifier as it allows the
    flexibility to modify the cage and other gui such as picking the
    colours of the cage with perhaps some sliders for offsetting
    everything easily.
 2. AA is very important, but not as important as being able to view the
    cage in real time. A good default for AA would be 4xAA. Anything
    more isnt worth the extra rendering time and anything less doesnt
    match up well enough in terms of quality.
 3. The Custom cage title is not correct. Custom cages are when the user
    has modified the topology of the cage by moving verts/topology and
    meshes under this slot do not need to have modified verts/topology
    in order to work. They could use a regular mesh or have one imported
    from another application so just calling it Cage mesh or Cage object
    would be perfect. Calling it cage mesh goes against convention for
    all other 3d applications so it's just going to cause confusion.
 4. Tangent space should be default for normal maps. I would even think
    about removing the option to bake world space as no one uses them
    ever in production as they are the least flexible of all normal maps.
 5. X+Y+Z+ should be default and is what is being baked currently by
    default even though the GUI says X-Y-Z- (for TS nmaps at least. IIRC
    OS and WS bake an odd order that doesnt match any convention.
    Something like X+Z-Y+ of the top of my head.)


Cheers,

-Andy

On 20/03/2014 03:08, Dalai Felinto wrote:
> Hi all,
>
> Some update:
>
> The *bake-cycles* branch is near feature complete for its first round.
> The only missing bit is anti-alias which I'm tempted to post-pone
> until after the first round of code-review.
>
> Recent/New features:
> * User Interface (no more need to fiddle with Python scripts)
> * File Formats (save as PNG, JPG, OpenEXR, Tiff, Targa and BMP -
> RGB/RGBA - 8/16/32)
> * Custom Cage
> * Normal swizzle (change the axis that gets mapped to RGB)
> * Normal space (save as tangent, world, object)
>
> As usual the code is here:
> * https://github.com/dfelinto/blender-git/tree/bake-cycles
>
> The Blender-Artist thread [1] is still getting a lot of attention, but
> I would rather if testers could use the github issue list to report
> bugs:
>
> https://github.com/dfelinto/blender-git/issues?state=open
>
> I'll try to do some code cleaning up and address some of the known
> issues in the remaining of the week. Hopefully the code can be
> available for code-reviewers by next Blender Sunday Dev Meeting.
>
> [1] - http://blenderartists.org/forum/showthread.php?326534
>
> Cheers,
> Dalai
> --
> blendernetwork.org/dalai-felinto
> www.dalaifelinto.com
>
>
> 2014-02-17 23:41 GMT-03:00 Dalai Felinto <dfelinto at gmail.com>:
>> Hi there.
>> I just pushed support for "Selected to Active" in the bake-cycles
>> branch. The new parameters for the operator are:
>>
>> * use_selected_to_active=False
>> * cage_extrusion=0.0
>>
>> The idea is to bake from a high-poly mesh to a low-poly mesh.
>>
>> Notes:
>> * There is no pre-visualization of the cage
>> * The cage always look inwards
>> * The cage cannot be 'edited' (all you can change is the cage extrusion)
>> * The calculation is done in the local space of the objects (as if the
>> objects had scale 1,1,1, and were in origin with no rotation)
>> * I tested against XNormals (managed to install "here") and the result
>> seem to be matching, though the color is coded slightly different for
>> object normal maps:
>>
>> Cycles RGB = XNormal R(1-B)G
>> XNormal RGB = Cycles RB(1-G)
>>
>> Cheers,
>> Dalai
>> --
>> blendernetwork.org/dalai-felinto
>> www.dalaifelinto.com
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