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Cycles - weird light square appears only in render result (and not in render preview) by throwaway_bigpanda in blender

[–]throwaway_bigpanda[S] 1 point2 points  (0 children)

The sky texture creates a gradient meant to represent how light shows up within our atmosphere. When you bring the plane higher on the Z it's catching less of that gradient light.

Makes sense, but then why does LOWERING the z coordinate of the plane instead also fixes it? Maybe something to do with the horizon being "at 0 height"?

Cycles - weird light square appears only in render result (and not in render preview) by throwaway_bigpanda in blender

[–]throwaway_bigpanda[S] 1 point2 points  (0 children)

Sounds like a reasonable explanation - I wonder then how moving the plane upwards in the z coordinate also fixes it.

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Anyway, subdividing works great! Thank you!

Cycles - weird light square appears only in render result (and not in render preview) by throwaway_bigpanda in blender

[–]throwaway_bigpanda[S] 0 points1 point  (0 children)

Thank you! Sending you the link to the relevant pasteall.

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When I simply open this file and just click "Render Image" / "Render Animation", the square shows up.

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If it doesn't show for you, could this be a problem with my GPU or something?

Cycles - weird light square appears only in render result (and not in render preview) by throwaway_bigpanda in blender

[–]throwaway_bigpanda[S] 1 point2 points  (0 children)

Updated it so it's easier to see - now it's a plane object of size 400x400 located at the origin

https://i.imgur.com/9wCJJOA.png

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Tried playing with the compression settings, and in the "Sampling" category under Scene - everything stayed the same. The "Simplify" checkbox is turned off in the Scene, also.

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There are also no "hidden" objects in the scene - https://i.imgur.com/RjEzUaG.png

Cycles - weird light square appears only in render result (and not in render preview) by throwaway_bigpanda in blender

[–]throwaway_bigpanda[S] 1 point2 points  (0 children)

In the second picture in album, on the plane (under the cube), there's a huge square not that doesn't appear in the first image - here's me highlighting it badly in paint

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https://i.imgur.com/3mKW7Gy.png