[Bf-cycles] rendering instances in Cycles

[Mohamed Sakr]

thanks a lot Sergey for the help :)
cheers.

On Thu, Jun 18, 2015 at 4:15 PM, Sergey Sharybin <sergey.vfx at gmail.com>
wrote:

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