[Bf-cycles] RenderSettings.use_border

Jordan Miller jrdnmlr at gmail.com
Mon Jun 25 19:27:29 CEST 2012

ok thank you, this is great news. The doc said this is a feature that will NOT be implemented soon so I was trying to find my own way thorugh it.

But how is one supposed to know that:

bpy.types.RenderSettings.border_max_x cannot be called directly? instead it is set at:


and so on...?

For example:
The mouse-over tooltip for the Border checkbox incorrectly lists: RenderSetting.use_border when instead it should specify, I think, bpy.data.scenes[0].render.use_border.

It took me a could hours digging around the internet along with a LOT of trial and error to figure this out (i had to control-space autocomplete each bpy.data variable to find the one I was looking for).

This little bit from the docs is really unhelpful... it says the problem is obvious but doesn't explain all mappings from class to active variable:

Soooo confusing!


On Jun 25, 2012, at 6:43 AM, Brecht Van Lommel wrote:

> Hi,
> Here are the properties:
> http://www.blender.org/documentation/blender_python_api_2_63_12/bpy.types.RenderSettings.html#bpy.types.RenderSettings.border_max_x
> This will become a builtin Cycles feature soon though, to render tiled
> with less memory.
> Brecht.
> On Sun, Jun 24, 2012 at 4:36 PM, Jordan Miller <jrdnmlr at gmail.com> wrote:
>> Hi,
>> This works in Cycles!
>> I am trying to scale-up my renders for printing poster-size. Obviously I run out of memory quickly with my video card. However, if we could break up the scene into chunks and render those then it would be a lot faster to use GPU since it could fit on the GPU memory.
>> My experiments here are true, the use border setting followed by shift-B to define the rendered area. A scene that barely does not fit on my video card DOES fit if I create 4 versions of the .blend file with a shift-B defined quadrant in each one for rendering.
>> How do I script the border size option? I found:
>> RenderSettings.use_border
>> But that is a boolean and does not have values for x,y.
>> So if we can find the python definition for these then I could add a preference for rendering "Tiles" with cycles that the user could assemble afterwards.
>> This could allow crowd-sourcing of Mango rendering, for example, where even weak GPU cards could render pixels for the final movie.
>> please help me find how to programmatically set the shift-B border size and position so that we can add this feature to Blender!
>> thanks,
>> jordan
>> _______________________________________________
>> Bf-cycles mailing list
>> Bf-cycles at blender.org
>> http://lists.blender.org/mailman/listinfo/bf-cycles
> _______________________________________________
> Bf-cycles mailing list
> Bf-cycles at blender.org
> http://lists.blender.org/mailman/listinfo/bf-cycles

More information about the Bf-cycles mailing list