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vello_common: Use better image for probe - #1967

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@LaurenzV

@LaurenzV LaurenzV commented Sep 30, 2026 •

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Right now, our image is a simple red pixmap. While this does help us find very obvious image sampling issues, it still feels a bit meaningless because... Well, it's all a single color. 😄 Therefore, this PR changes it to a different image which also has different results depending on whether nearest-neighbor or bilinear sampling is chosen.

Here the images since they are a bit hard to see in the preview:

image image

I've tried this on a number of MacBooks and mobile devices and they all pass the probe correctly, so this shouldn't cause any big regressions, and hopefully will help us find more hidden issues, if certain devices have any.

@LaurenzV
LaurenzV added this pull request to stack #1965 September 30, 2026 15:04
@LaurenzV
LaurenzV requested review from grebmeg and removed request for grebmeg September 30, 2026 15:04
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LaurenzV marked this pull request as draft October 1, 2026 09:30
@laurenz-canva
laurenz-canva removed this pull request from stack #1965 October 1, 2026 10:59
@laurenz-canva
laurenz-canva added this pull request to stack #1969 October 1, 2026 11:00

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