[Interest] [Qt3D] Custom texture loader and material shaders

[Sean Harmer]

On Tuesday 21 June 2016 00:11:23 Xavier Bigand wrote:
> I am trying to check the material sample, but when launching the program
> with gDebugger it can't be initialized with opengl render, always DX or the
> software emulation (when I am trying to force the application attributs).
> 
> Is there CMAKE files to build samples with Visual Studio?

You can generate MSVC project files using qmake -tp vc myexample.pro. We've 
used this to then profile in Visual Studio with the nVidia nSight plugin.

Cheers,

Sean

> 
> 2016-06-20 22:55 GMT+02:00 Sean Harmer <sean.harmer at kdab.com>:
> > The textures should be cached in a similar way to the shaders. If they are
> > not in your case, it's a bug. Please file a test case.
> > 
> > Cheers,
> > 
> > Sean
> > 
> > On 20/06/2016 16:37, Xavier Bigand wrote:
> > 
> > I just put a QHash table to return the previous
> > generated Qt3DRender::QTextureImageDataPtr, but it doesn't work.
> > 
> > Need I fill a bug for this?
> > 
> > 2016-06-20 17:15 GMT+02:00 Xavier Bigand <flamaros.xavier at gmail.com>:
> >> I took a look with nsight and it appears that my textures are currently
> >> loaded many times, certainly one for each object instance.
> >> 
> >> Need I manage textures resources my self?
> >> 
> >> 
> >> 
> >> 2016-06-02 20:39 GMT+02:00 Xavier Bigand < <flamaros.xavier at gmail.com>
> >> 
> >> flamaros.xavier at gmail.com>:
> >>> I forgot to precise that mipmaps are already generated in our file
> >>> format and texture compressed (PVRTC, DXTC,...)
> >>> 
> >>> 2016-06-02 18:41 GMT+02:00 Xavier Bigand < <flamaros.xavier at gmail.com>
> >>> 
> >>> flamaros.xavier at gmail.com>:
> >>>> Hi,
> >>>> 
> >>>> I finally come back into Qt3D tests.
> >>>> 
> >>>> For the texture loader, I made my own QAbstractTextureImage
> >>>> and QTextureDataFunctor, I do the loading of our files in the override
> >>>> of QTexImageDataPtr operator ()().
> >>>> But I don't understand how to give to Qt3D texture's format,
> >>>> mipmaps,... because I can set only buffer, pixelType and pixelFormat
> >>>> on QTexImageData class.
> >>>> 
> >>>> 
> >>>> Need I also implement my own QAbstractTextureProvider functor to
> >>>> provide other properties?
> >>>> 
> >>>> 
> >>>> 2016-03-28 10:45 GMT+02:00 Sean Harmer < <sh at theharmers.co.uk>
> >>>> 
> >>>> sh at theharmers.co.uk>:
> >>>>> Hi,
> >>>>> 
> >>>>> sorry, forgot to reply to the texture part.
> >>>>> 
> >>>>> On 27/03/2016 23:53, Xavier Bigand wrote:
> >>>>> 
> >>>>> Hi,
> >>>>> 
> >>>>> Is there a way to add a loader for our custom texture format?
> >>>>> 
> >>>>> 
> >>>>> I think you can use the functor approach exposed by
> >>>>> QAbstractTextureProvider or QAbstractTextureImage.
> >>>>> 
> >>>>> Cheers,
> >>>>> 
> >>>>> Sean
> >>>>> 
> >>>>> 
> >>>>> We also have to use our existing shaders for materials, but I don't
> >>>>> know how to manage uniforms. We are generating our shaders based on
> >>>>> macros
> >>>>> depending of the number and types of light sources,..., is it possible
> >>>>> to
> >>>>> keep that?
> >>>>> 
> >>>>> --
> >>>>> Xavier
> >>>>> 
> >>>>> 
> >>>>> _______________________________________________
> >>>>> Interest mailing
> >>>>> listInterest at qt-project.orghttp://lists.qt-project.org/mailman/listin
> >>>>> fo/interest
> >>>>> 
> >>>>> 
> >>>>> 
> >>>>> _______________________________________________
> >>>>> Interest mailing list
> >>>>> Interest at qt-project.org
> >>>>> http://lists.qt-project.org/mailman/listinfo/interest
> >>>> 
> >>>> --
> >>>> Xavier
> >>> 
> >>> --
> >>> Xavier
> >> 
> >> --
> >> Xavier
> > 
> > --
> > Xavier
> > 
> > 
> > 
> > --
> > Dr Sean Harmer | sean.harmer at kdab.com | Managing Director UK
> > KDAB (UK) Ltd, a KDAB Group company
> > Tel. +44 (0)1625 809908; Sweden (HQ) +46-563-540090
> > Mobile: +44 (0)7545 140604
> > KDAB - Qt Experts

-- 
Dr Sean Harmer | sean.harmer at kdab.com | Managing Director UK
KDAB (UK) Ltd, a KDAB Group company
Tel. +44 (0)1625 809908; Sweden (HQ) +46-563-540090
Mobile: +44 (0)7545 140604
KDAB - Qt Experts