[Bf-cycles] rendering instances in Cycles

[Mohamed Sakr]

ok Sergey, I understand the part of object instancing, but what confuses me
is: how does each object got its own shader?
I see inside Blender there is an Object info node, which uses data
dynamically like Object index & Material index, is this the only way to
separate shaders between instances?

On Thu, Jun 18, 2015 at 3:52 PM, Sergey Sharybin <sergey.vfx at gmail.com>
wrote:

> In your example is rather correct, it'll create two objects which are
> sharing the same mesh. ObjectManager and BVH builder detects if objects are
> sharing the same mesh and does some special things for proper instancing
> then.
>
> Not sure why do you ask about shaders, they are not object property,
> they're mesh property. Synchronization code from blender/ is whet you want
> to look into to understand it better.
>
> On Thu, Jun 18, 2015 at 2:28 AM, Mohamed Sakr <3dsakr at gmail.com> wrote:
>
>> Hi,
>>
>> I'm creating an exporter to Cycles Standalone, I wanna know how Cycles
>> renders instances?
>> so if I have a Mesh* which is shared across 2 Object* , is this all what
>> I need to do? or am I missing something?
>>
>> Mesh* any_mesh;
>> //fill mesh data
>>
>> Object* main_object;
>> main_object->mesh = any_mesh;
>> main_object->tfm = any_tfm;
>>
>> Object* instance_object;
>> instance_object->mesh = any_mesh;
>> instance_object->tfm = instance_tfm;
>>
>> //what about mesh->used_shaders??
>>
>> so in short, what I do to mark an object as an instance., which data to
>> fill, how to determine its shader.
>>
>> cheers,
>> Mohamed Sakr
>>
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>> Bf-cycles at blender.org
>> http://lists.blender.org/mailman/listinfo/bf-cycles
>>
>>
>
>
> --
> With best regards, Sergey Sharybin
>
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