[Interest] use custom fragment shader for Quick2 Image item
sh at theharmers.co.uk
Tue Oct 22 18:57:30 CEST 2013
The shader code is hard-wired into the relevant material in the
qtdeclarative module and there is no way to replace it at present (that
I know of) apart from altering the source and building a customised
version. Maybe Gunnar knows of way?
Another option would be to write yourself a custom material using the SG
API and assigning that to a specialised CustomImage item.
I agree that in some cases such a feature would indeed be useful to
avoid having to do this.
On 22/10/2013 14:20, Ola Røer Thorsen wrote:
> Hi all,
> I want to use a custom fragment shader when rendering a Image item. Is
> it possible to set the shader to use directly somehow? That is, I want
> to use a custom shader instead of the "passthrough" fragment shader
> used in the Image element.
> I have tried using the QtGraphicalEffects (GammaAdjust), but the
> performance is not good enough on my target platform (Omap 3530).
> ShaderEffect elements work, but they also seem to render via another
> render-texture, again with a performance loss.
> Best regards,
> Interest mailing list
> Interest at qt-project.org
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