[Bf-cycles] rendering instances in Cycles

[Sergey Sharybin]

You can not use different shaders for different materials, they're betting
referenced by geometry primitives. As you already mentioned, you can tweak
shader settings by using Object Info and Particle Info nodes. But that
wouldn't separate shaders, that will just evaluate same shader differently
for different instances.

On Thu, Jun 18, 2015 at 4:06 PM, Mohamed Sakr <3dsakr at gmail.com> wrote:

> 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
>>>
>>> _______________________________________________
>>> Bf-cycles mailing list
>>> Bf-cycles at blender.org
>>> http://lists.blender.org/mailman/listinfo/bf-cycles
>>>
>>>
>>
>>
>> --
>> With best regards, Sergey Sharybin
>>
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>>
>>
>
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>


-- 
With best regards, Sergey Sharybin
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