[Interest] Fwd: Re: [Qt3d] Textures flickering
sh at theharmers.co.uk
Mon Jul 30 09:17:42 CEST 2018
-------- Forwarded Message --------
Subject: Re: [Interest] [Qt3d] Textures flickering
Date: Sun, 29 Jul 2018 21:09:23 +0100
From: Sean Harmer <sean at theharmers.co.uk>
To: interest at qt-project.org
* Change the near plane and far plane properties of the camera so you
get greater depth precision by reducing the range covered
* Use a higher bit depth depth buffer via QSurfaceFormat
* Render your scene in multiple passes using different camera z-range
for each part and clearing the depth buffer in between.
On 29/07/2018 21:04, Oleg Evseev wrote:
> Mike, thanks.
> Yes you are right. This is z-conflict.
> This model is rendered fine, without flickering in another project
> with disabled fragment depth writes to depth buffer.
> How can I increase precision of z-buffer in qt 3d?
> 2018-07-29 21:28 GMT+03:00 Mike Krus <mike.krus at kdab.com
> <mailto:mike.krus at kdab.com>>:
> hard to say from the short video, but it looks like you may have z
> fighting going on, two coinciding meshes and the lack on precision
> causing this flickering…
> > On 29 Jul 2018, at 14:58, Oleg Evseev <ev.mipt at gmail.com
> <mailto:ev.mipt at gmail.com>> wrote:
> > Hi all,
> > When I load big models with help QSceneLoader in assimp-cpp test
> example (or small models but move camera far away from object)
> textures start flickering:
> > https://youtu.be/5FUOWc412JE
> > How to fix that?
> > Thanks in advance for help.
> > ---
> > With regards, Oleg
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> Mike Krus | mike.krus at kdab.com <mailto:mike.krus at kdab.com> |
> Senior Software Engineer
> KDAB (UK) Ltd., a KDAB Group company
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