[Interest] Qt3D GeometryRenderer TriangleStrip

Volker Enderlein volker.enderlein at ifm-chemnitz.de
Mon Aug 27 12:18:15 CEST 2018


Am 27/08/2018 um 11:31 schrieb Sean Harmer:
> On 27/08/2018 07:31, Volker Enderlein wrote:
>> Hi,
>>
>>
>> does the Qt3D GeometryRenderer class support TriangleStrip primitives 
>> with restartIndexValue separated Strips?
>
> Yes. Set the primitiveType property to LineStrip and you can specify 
> the restart index value with 
> https://doc.qt.io/qt-5/qt3drender-qgeometryrenderer.html#restartIndexValue-prop.
>
> Cheers,
>
> Sean
>
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Thanks, Shawn.


Rereading my question, I think I need to clarify what I'm after.

Is it possible for a single GeometryRenderer with primitiveType 
`TriangleStrip` to contain multiple indexed TriangleStrips where the 
indexArray entries of the strips are separated by a `restartIndexValue`? 
When testing this, I saw some rendering artifacts with Qt 5.10.0.

Apparently (according to my tests) a GeometryRenderer with primitiveType 
' Triangles'  does support this, but is it supported for primitiveType 
`TriangleStrip` too?


Cheers, Volker

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