linux-kernel - Re:Re:Re: [PATCH v6] rockchip/drm: vop2: add support for gamma LUT

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Message-ID: <J0qrwbZdhKG3-7KhE30DvtMh7V3jQTrQ8RnHPcIHV_yBxiXRucga5al9iptkXm3NWrGKwuxOqyIOw-HiP5aIXY5D5GUOZ3Fu17rgj8Cy3B4=@proton.me>
Date: Tue, 29 Oct 2024 09:48:02 +0000
From: Piotr Zalewski <pZ010001011111@...ton.me>
To: Andy Yan <andyshrk@....com>
Cc: hjc@...k-chips.com, heiko@...ech.de, andy.yan@...k-chips.com, maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch, dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, skhan@...uxfoundation.org, Daniel Stone <daniel@...ishbar.org>, Dragan Simic <dsimic@...jaro.org>, Diederik de Haas <didi.debian@...ow.org>
Subject: Re:Re:Re: [PATCH v6] rockchip/drm: vop2: add support for gamma LUT

Hi Andy

> 在 2024-10-28 14:42:28，"Andy Yan" andyshrk@....com 写道：
> 
> > Hi Piotr，
> > Tested on top of Linux 6.12-rc5 with rk3566-box-demo in a buildroot + weston environment:
> > weston --backend=drm-backend.so -i 0 --continue-without-input
> > weston-simple-egl
> > 
> > simple-egl will draw a triangle on the desktop.
> > After the patch applied，the triangle will flicker again and agian。
> > So it break some function。
> > I've been quite busy lately, and it will take some time before I can analyze what the specific reason is.
> 
> 
> Sorry, it's my fault. After more experiments, I found that the flickering I observed is not related to your patch.
> This should be a probability-related issue associated with alpha blending，which can be Fixed with patches in
> my series[0]
> [0] https://lore.kernel.org/linux-rockchip/75a13dbb.acb8.192289a8005.Coremail.andyshrk@163.com/#r

Np :)

> And for the gamma patch， I think there are still some small areas that can be improved.
> Please see my comment bellow:

Amended! thanks.

I will wait until weekend with next version, maybe there will be more
comments.