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| author | Andrew Chow <achow101-github@achow101.com> | 2020-11-21 01:51:48 -0500 |
|---|---|---|
| committer | Andrew Chow <achow101-github@achow101.com> | 2020-11-23 12:08:18 -0500 |
| commit | 8f7d1b39efbe65ab2747c593cc3560d4a449a333 (patch) | |
| tree | 189e1e18d2b12ea23c568943413c4b1d0507a3dc /test | |
| parent | e9a1c9fbdea977edbb4d10d0368cc7c3199bc469 (diff) | |
Fix QPainter non-determinism on macOS
Aplies a patch to Qt that fixes the non-determinism by modifying Qt. The
source of the non-determinism is how LLVM 8 optimizes qt_intersect_spans
when compiling. The particular optimization that seems to be causing the
problems is that a temp variable is being added for spans->y. For some
reason, when it does this, it chooses different instructions to use when
making that variable. We bypass this problem by patching
qt_intersect_spans to always make and use this local variable.
Diffstat (limited to 'test')
0 files changed, 0 insertions, 0 deletions