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Document grid with dots fails to render clean pixels. GPU/CPU rendering differs.

The dotted document grid renders differently between CPU and GPU modes. None of the alternatives renders perfect pixels in the selected grid color.

CPU renders vertically lighter smeared dots.
GPU renders horizontally smeared dots.

See attached screenshots.

This may relate to another bug report i've posted:
https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/44269260-bug-view-grid-dots-1px-freezes-illustrator

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  • Mikael commented  ·   ·  Report

    Macbook Pro 16" 2019. MacOS 14.8.5. 1440p monitor. 1:1 scale. UI in Illustrator is the smallest. (Tried scaling the UI but it doesn't affect the dot grid.)

    I've tested on a couple of colleagues computers as well. Intels and Apple silicon Macbook Pros on later OSes. – All have the same issue.

    All ticks are smeared both major and minor. The smearing also affects line grids. See attached screenshot.

    This is a big issue for me so I'm happy to give more information/context.

  • AdminEgor Chistyakov (Admin, Adobe Illustrator) commented  ·   ·  Report

    Mikael, I never asked you about the specs.
    What is your OS (still a Mac, I presume)? What is the version of your OS? What is your screen size? The scaling (both OS and Ai)? What is your GPU and the driver version?

    I had smeared grids once, I do recall, but today they look like 1 px dots for me, no blur... well, the minor ticks are — major are two dots diagonally, so the 'lines' are shifted 1 px.

    (Edited by admin)
  • Mikael commented  ·   ·  Report

    Bug is still present in 28.6.

  • Mikael commented  ·   ·  Report

    Bug is still present in 27.8.1

  • Mikael commented  ·   ·  Report

    Bug is still present in 27.3.1

  • Mikael commented  ·   ·  Report

    Just an image showing how GPU preview has changed since 25.2.3 (clean pixels) to current version 26.5 (smeared pixels).

Illustrator (Desktop) Bugs: Rendering Issues (GPU, CPU)

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