Fw: [PATCH v2 0/4] New DRM properties for output color format

[Sean Summers]

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Hi Andri,

I've made this patch, but I'm unable to configure the video pipeline for YCC 420. I'm using libdrm's modetest to set the output format / colorspace and pass a test pattern through. Modetest can see the new "force output format" property, but it's being rejected and falls back to RGB. I verified my EDID has support for YCC 420. Can you tell me how you're testing this change?

Here's my modetest command:
modetest -s 185:3840x2160-60 at NV12 -w "185:force color format:8"

Thanks,
Sean



________________________________
From: Sean Summers <Sean.Summers at qsc.com>
Sent: Wednesday, May 28, 2025 10:23 AM
To: andri at yngvason.is <andri at yngvason.is>
Cc: dri-devel at lists.freedesktop.org <dri-devel at lists.freedesktop.org>; intel-gfx at lists.freedesktop.org <intel-gfx at lists.freedesktop.org>
Subject: Re: [PATCH v2 0/4] New DRM properties for output color format

Hi Andri,

I've made this patch, but I'm unable to configure the video pipeline for YCC 420. I'm using libdrm's modetest to set the output format / colorspace and pass a test pattern through. Modetest can see the new "force output format" property, but it's being rejected and falls back to RGB. I verified my EDID has support for YCC 420. Can you tell me how you're testing this change?

Here's my modetest command:
modetest -s 185:3840x2160-60 at NV12 -w "185:force color format:8"

Thanks,
Sean
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