Anonymous

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  1. Sharp corners of a convex curve get displayed wrong with GPU Preview

    60 votes
    52 comments  ·  Illustrator (Desktop) Bugs » Rendering Issues (GPU, CPU)  ·  Admin →
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    Anonymous commented  · 

    I am using Mac OS 10.15.7 with Illustrator Version 25.3.1

    When creating shapes with the pathfinder or shapebuilder, there is a problem with rendering where curved and straight shapes intersect. I have tried multiple files, updated Illustrator, and even opened old files to discover that the rendering issue is there on files that were made ages ago without issue... so the problem is not with the tools, but with how these shapes are rendering.
    It's totally frustrating because precision work is impossible at the moment!

    I do occasionally use snap to grid, but have tried with and without it. I have ensured that snap to pixel is off, as this causes other issues.

    For this example, I've intersected a circle and square to create sharp corners. The results are consistently problematic.

    I've added a video showing the problem as it occurs after creating the shape with both the pathfinder (divide) and shape builder tools. I then duplicate and rotate the shapes to show the issue is with rendering.

    screenshots of
    1. the overlapping shapes
    2. I used the pathfinder to divide.
    3. I show the problematic rendering up close
    4. I show that there is no abnormality in the wireframe view.

    To further test the issue, I made a couple of copies and rotated them. The screenshots here show

    1. that the rendering issue changes depending upon rotation and
    2. again there are no issues in the wireframe view

    An error occurred while saving the comment
    Anonymous commented  · 

    When creating shapes with the pathfinder or shapebuilder, there is a problem with rendering where curved and straight shapes intersect. I have tried multiple files, updated Illustrator, and even opened old files to discover that the rendering issue is there on files that were made ages ago without issue... so the problem is not with the tools, but with how these shapes are rendering. It's totally frustrating because precision work is impossible at the moment!

    I do use snap to grid, but have tried with and without it. I have ensured that snap to pixel is off, as this causes other issues.

    For this example I've intersected a circle and square to create sharp corners. The results are consistently problematic.

    I've added screenshots of
    1. the overlapping shapes
    2. I used the pathfinder to divide.
    3. I show the problematic rendering up close
    4. I show that there is no abnormality in the wireframe view.

    To further test the issue, I made a couple of copies and rotated them. The screenshots here show

    1. that the rendering issue changes depending upon rotation and
    2. again there are no issues in the wireframe view

    Anonymous supported this idea  · 

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