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It is possible to receive multiple screen resize events, and resizeimg
would be called for different sizes, before _flushmemscreen actually
gets called with rectangle sizes different from the most recent
resizeimg call. The size mismatch would trigger illegal memory
access inside _flushmemscreen.
This commit protects _flushmemscreen by returning early if the requested
rectangle is outside of the current texture rectangle.
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Fixes bug where devdraw does not "notice" mouse position after task
switch. Fixes https://github.com/9fans/plan9port/issues/232.
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This replaces the pixel-art scaling algorithm used for upscaling before.
The results were not crisp enough to serve as everyday cursors.
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Add a new macOS cocoa screen, cocoa-screen-metal.m.
Rewrite the macOS cocoa drawing code to use the builtin runloop,
and use Metal to push pixels with CAMetalLayer.
Remove all of the deprecated code, and simplify some of the logic.
Modify mkwsysrules.sh such that the new code is used only when
the system version is equal or higher than 10.14.
Allow touch events to simulate mouse clicks:
three finger tap for the middle mouse button;
four finger tap for the 2-1 chord.
Support Tresize.
Scale 16x16 Cursor up to 32x32 with an EPX algorithm.
Support macOS input sources including the basic dead keys and the
advanced CJK input methods.
Increase the communication buffers in cocoa-srv.c to allow more
input, especially for long sentences prepared by the macOS input
souces.
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