[Bf-cycles] RenderSettings.use_border

[Jordan Miller]

Ok I guess that makes sense. But looking at a page like this:
http://www.blender.org/documentation/blender_python_api_2_63_12/bpy.types.RenderSettings.html

How could you find how those variables can be called (by the various variables you specified)?

Is there a way to figure out the complete list?

It is very confusing for a n00b.

thank you,
jordan





On Jun 25, 2012, at 5:17 PM, Brecht Van Lommel wrote:

> It could be more helpful but this is also just the way python works.
> This page describes the data type, which is distinct from a particular
> instance of that data type. There are multiple ways to access a scene
> and its render settings: bpy.data.scenes[0] works but also
> bpy.context.scene, screen.scene, scene.background_set, ...
> 
> Brecht.
> 
> On Mon, Jun 25, 2012 at 7:27 PM, Jordan Miller <jrdnmlr at gmail.com> wrote:
>> 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:
>> 
>> bpy.data.scenes[0].render.border_max_x
>> 
>> 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:
>> http://www.blender.org/documentation/blender_python_api_2_63_12/info_quickstart.html#data-creation-removal
>> 
>> Soooo confusing!
>> 
>> jordan
>> 
>> 
>> 
>> 
>> 
>> 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
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
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