[Bf-cycles] point density doesn't appear correctly

[Mohamed Sakr]

you made my day Sergey :)
just figured a stupid bug in my code where it missed
ATTR_STD_GENERATED_TRANSFORM
because I didn't call shader->tag_update() !

thanks for the help.
cheers,
Mohamed Sakr

On Fri, Mar 18, 2016 at 2:53 PM, Sergey Sharybin <sergey.vfx at gmail.com>
wrote:

> Ah, you're right.
>
> But without being able to reproduce the issue can only guess that maybe
> it's a sampling issue Did you try returning constant 1.0 for the densities
> of the texture?
>
> Another possibility is that you don't have ATTR_STD_GENERATED_TRANSFORM
> attribute calculated.
>
> In any case, it's all quite tricky to tell where exactly the issue without
> an example which demonstrates the issue.
>
> On Fri, Mar 18, 2016 at 5:41 PM, Mohamed Sakr <3dsakr at gmail.com> wrote:
>
>> Hi Sergey,
>>
>> this tfm works only for World I guess, tried to change it "I'm in Object
>> space" , but nothing changed.
>> any idea what else may affect this?
>>
>> On Fri, Mar 18, 2016 at 2:32 PM, Sergey Sharybin <sergey.vfx at gmail.com>
>> wrote:
>>
>>> Hard to guess, but think it's because your node's tfm doesn't match
>>> object.
>>>
>>> See blender_shader.cpp:902 for examples.
>>>
>>> On Fri, Mar 18, 2016 at 5:18 PM, Mohamed Sakr <3dsakr at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm creating a custom exporter, I fill a 3d image, passing data
>>>> to PointDensityTextureNode
>>>>
>>>> PointDensityTextureNode *pd = new PointDensityTextureNode();
>>>> pd->filename = anyString;
>>>> pd->builtin_data = myData;
>>>> pd->space = "Object";
>>>> pd->interpolation = InterpolationType::INTERPOLATION_LINEAR;
>>>> scene->image_manager->tag_reload_image(
>>>> pd->filename,
>>>> pd->builtin_data,
>>>> pd->interpolation,
>>>> EXTENSION_CLIP);
>>>>
>>>> it appears on object as wrong transform.
>>>> consider object bounding box from (-1, -1, -1) to (1, 1, 1)
>>>> texture appears exactly from (0, 0, 0) to (0.5, 0.5, 0.5)
>>>> what may cause this?
>>>>
>>>> cheers,
>>>> Mohamed Sakr
>>>>
>>>>
>>>> _______________________________________________
>>>> Bf-cycles mailing list
>>>> Bf-cycles at blender.org
>>>> http://lists.blender.org/mailman/listinfo/bf-cycles
>>>>
>>>>
>>>
>>>
>>> --
>>> With best regards, Sergey Sharybin
>>>
>>> _______________________________________________
>>> 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
>>
>>
>
>
> --
> With best regards, Sergey Sharybin
>
> _______________________________________________
> Bf-cycles mailing list
> Bf-cycles at blender.org
> http://lists.blender.org/mailman/listinfo/bf-cycles
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.blender.org/pipermail/bf-cycles/attachments/20160318/efb10e47/attachment.htm