[Interest] Qt3D How to draw 2D-Text always facing the Camera

Volker Enderlein volker.enderlein at ifm-chemnitz.de
Wed Dec 19 08:05:12 CET 2018

Hi David,

thanks for the answer. I wasn't thinking of that, as my knowledge about 
framegraphs is very limited. But this helps me further.

Cheers Volker

Am 18.12.2018 um 14:53 schrieb david crémoux:
> Hello Volker,
> I guess you can achieve it with regular QText2DEntity, with a specific 
> frame graph branch in your rendering for your 2d text, a layer filter 
> and a custom camera (based on your main camera).
> david
> On 18-Dec-18 14:37, Volker Enderlein wrote:
>> Hi all,
>> when building a rather complex Qt3D-Scene I needed some 2D-Text that 
>> has a 3D position, is always facing the camera, and fixed in size, 
>> independent of the camera settings.
>> While looking over the components provided by Qt3D I stumbled across 
>> Text2DEntity and thought about how it can be tweaked ot fulfill my 
>> requirements.
>> As all my requirements can be done inside a shader I thought about 
>> whether the QText2DMaterial that is used inside the class can be 
>> replaced by a custom material. But unfortunately the material is not 
>> accessible from outside.
>> Text2DEntity can be embedded in another class that applies the camera 
>> information to it, but is there an easier solution to this problem?
>> Cheers Volker


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