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Added Output.enable_adaptive_sync, fixes #134 #153

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merged 2 commits into from
Mar 18, 2024
Merged

Added Output.enable_adaptive_sync, fixes #134 #153

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7a0cbaa
Added Output.enable_adaptive_sync, fixes #134
heuer Mar 15, 2024
b81839b
Convert 'enable' to a keyword-only arg to align it with several other…
heuer Mar 16, 2024
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1 change: 1 addition & 0 deletions wlroots/ffi_build.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1157,6 +1157,7 @@ def has_xwayland() -> bool:
int32_t height, int32_t refresh);
void wlr_output_set_transform(struct wlr_output *output,
enum wl_output_transform transform);
void wlr_output_enable_adaptive_sync(struct wlr_output *output, bool enabled);
void wlr_output_set_scale(struct wlr_output *output, float scale);

bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age);
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15 changes: 15 additions & 0 deletions wlroots/wlr_types/output.py
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Expand Up @@ -273,6 +273,21 @@ def test(self) -> bool:
"""
return lib.wlr_output_test(self._ptr)

def enable_adaptive_sync(self, *, enable: bool = True) -> None:
"""
Enables or disables adaptive sync (ie. variable refresh rate) on this
output. On some backends, this is just a hint and may be ignored.
Compositors can inspect `wlr_output.adaptive_sync_status` to query the
effective status. Backends that don't support adaptive sync will reject
the output commit.

When enabled, compositors can submit frames a little bit later than the
deadline without dropping a frame.

Adaptive sync is double-buffered state, see commit().
"""
lib.wlr_output_enable_adaptive_sync(self._ptr, enable)

@property
def is_headless(self) -> bool:
return lib.wlr_output_is_headless(self._ptr)
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