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Picks a safer default construction.

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This commit is contained in:
Thomas Harte 2020-02-09 19:13:21 -05:00
parent 85dcdbfe9e
commit b04daca98e
1 changed files with 1 additions and 1 deletions
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Outputs/OpenGL/ScanTarget.hpp
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@ -108,7 +108,7 @@ class ScanTarget: public Outputs::Display::ScanTarget {
// The sizes below might be less hassle as something more natural like ints,
// but squeezing this struct into 64 bits makes the std::atomics more likely
// to be lock free; they are under LLVM x86-64.
int write_area = 0;
int write_area = 1; // By convention this points to the vended area. Which is preceded by a guard pixel. So a sensible default construction is write_area = 1.
uint16_t scan_buffer = 0;
uint16_t line = 0;
};