[OpenSmalltalk/opensmalltalk-vm] Fix Metal window crash on resize. (#453)

 

This fixes an edge condition with the metal renderer where the update rect ends out of the bounds of the display texture. The texture update region ends with negative coordinates.

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You can view, comment on, or merge this pull request online at:

  https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/453

Commit Summary

• This fixed an edge condition with the metal renderer where the update rect ends out of the bounds of the display texture.

File Changes

• M platforms/iOS/vm/OSX/sqSqueakOSXMetalView.m (10)

Patch Links:

• https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/453.patch
• https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/453.diff

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Merged #453 into Cog.

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