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[Texturing] Texture Generation Progress Bar Stalls at 25 Percent

Solution

texturesrenderingmaterialasset management

Unity 2021.x - Unity 6.3.x

Published Thu, Apr 30

Author Profile Photo

Reviewed by _architect

Chief Editor

80 posts
Issue

 The Unity Editor progress indicator for texture generation becomes unresponsive, frequently halting at 25% completion. This occurs even when the underlying process has finished, causing unnecessary delays as developers wait for a UI update that never triggers.

Quick-Fix

Stalled texture generation UI at 25% is often a visual refresh error rather than a processing failure; triggering a domain reload or restarting the Editor resolves the state.

Expand Analysis

The texture generation display stalls due to Editor preview window refresh failures. Although the process completes in the background, the UI thread fails to receive or process the completion callback.

  1. Verify if the texture generation has exceeded 120 seconds for standard assets.
  2. Trigger a domain reload by entering Play Mode or modifying your script.
  3. Restart the Unity Editor if the progress bar remains frozen.
  4. Reopen your asset window to confirm the texture generation completed successfully.

Internal stability for texture generation was higher in package versions prior to .17. Development of a permanent fix for the preview update bug is currently underway.

Additional Tips:

  • Avoid keeping multiple large Preview windows active during texture generation to reduce UI overhead.
  • Monitor the Console for hidden exceptions during the texture generation phase.
  • Reverting to package version .17 may provide stability if current iterations frequently stall.

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Content inspired by a Unity discussion post.