linux-kernel - Re: [PATCH 0/2] Better support for complex pixel formats

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Date: Fri, 2 Feb 2024 09:15:07 +0100
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Maira Canal <mcanal@...lia.com>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
	Melissa Wen <melissa.srw@...il.com>,
	Maíra Canal <mairacanal@...eup.net>,
	Haneen Mohammed <hamohammed.sa@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, marcheu@...gle.com,
	seanpaul@...gle.com, nicolejadeyee@...gle.com,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	thomas.petazzoni@...tlin.com, miquel.raynal@...tlin.com
Subject: Re: [PATCH 0/2] Better support for complex pixel formats

Le 01/02/24 - 19:07, Maira Canal a écrit :
> Hi Louis,
> 
> Thanks for your patches! Could you please rebase them on top of
> drm-misc-next? It would make it easier for me to review and test the
> patches.
> 
> Best Regards,
> - Maíra

Hi Maíra,

Do you want me to rebase the whole YUV [1] series or should I extract and 
make my two patches independent?

[1]: https://lore.kernel.org/dri-devel/20240110-vkms-yuv-v2-0-952fcaa5a193@riseup.net/

Best regards,
Louis Chauvet
 
> On 2/1/24 14:31, Louis Chauvet wrote:
> > This patchset aims to solve issues I found in [1], and at the same time
> > simplify the composition algorithm.
> > 
> > I sent more igt-gpu-tools test [2] to cover more things and detect the
> > issues in [1].
> > 
> > This patchset is based on [1].
> > 
> > Patch 1/2: This patch is a no-op, but make the code more readable
> > regarding the pixel_read functions.
> > 
> > Patch 2/2: This patch is more complex. My main target was to solve issues
> > I found in [1], but as it was very complex to do it "in place", I choose
> > to rework the composition function.
> > The main two advantages are:
> > - It's now possible to create conversion function for packed & grouped
> > pixels. Some pixel formats need absolute x/y position and not only an
> > offset in the buffer to extract the correct value. This part also solve
> > the issues I found in [1].
> > - The rotation management is now way easier to understand, there is no
> > more switch case in different places and instead of copy/pasting rotation
> > formula I used drm_rect_* helpers.
> > 
> > [1]: https://lore.kernel.org/dri-devel/20240110-vkms-yuv-v2-0-952fcaa5a193@riseup.net/
> > [2]: https://lore.kernel.org/igt-dev/20240201-kms_tests-v1-0-bc34c5d28b3f@bootlin.com/T/#t
> > 
> > Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
> > ---
> > Louis Chauvet (2):
> >        drm/vkms: Create a type to check a function pointer validity
> >        drm/vkms: Use a simpler composition function
> > 
> >   drivers/gpu/drm/vkms/vkms_composer.c |  97 ++++++++-----
> >   drivers/gpu/drm/vkms/vkms_drv.h      |  32 ++++-
> >   drivers/gpu/drm/vkms/vkms_formats.c  | 254 ++++++++++++++++++-----------------
> >   drivers/gpu/drm/vkms/vkms_formats.h  |   2 +-
> >   drivers/gpu/drm/vkms/vkms_plane.c    |  13 +-
> >   5 files changed, 236 insertions(+), 162 deletions(-)
> > ---
> > base-commit: 5d189d57bb335a87ec38ea26fe43a5f3ed31ced7
> > change-id: 20240201-yuv-1337d90d9576
> > 
> > Best regards,