This allows the legacy interface to be used instead of atomic if needed. This is a workaround to make some Intel GPUs work (if this variable is unset) as well as to make some AMD GPUs work (if this variable is set).  | 
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|---|---|---|
| .. | ||
| atomic.c | ||
| backend.c | ||
| drm.c | ||
| legacy.c | ||
| properties.c | ||
| renderer.c | ||
| util.c | ||