webgl: Unconditionally decrement busy count of WebGL contexts. #56545
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The review process for this patch is being conducted in the Servo project.
The current logic returns early without decrementing the busy count if there are the swap chain doesn't have a front surface. This happens if the context was created but never used for rendering, as seen in the linked issue. Since the count is always incremented when locking, this causes the count to never reach zero, causing the cleanup logic in `remove_webgl_context` to skip freeing the context and associated resources. Fixes web-platform-tests#41082. Signed-off-by: Mukilan Thiyagarajan <[email protected]>
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The current logic returns early without decrementing the busy count if the swap chain doesn't have a front surface. This happens if the context was created but never used for rendering, as seen in the linked issue. Since the count is always incremented when locking, this causes the count to never reach zero, causing the cleanup logic in
remove_webgl_contextto skip freeing the context and associated resources.Fixes #41082.
Testing: A new crash test is added.
Reviewed in servo/servo#41094