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output: add adaptive_sync_enabled property

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Simon Ser 2020-01-10 16:00:21 +01:00 committed by Drew DeVault
parent 8afc1ed68c
commit 7017fa95b8
2 changed files with 35 additions and 0 deletions
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19
include/wlr/types/wlr_output.h
View file

@ -46,6 +46,12 @@ struct wlr_output_cursor {
} events;
};
enum wlr_output_adaptive_sync_status {
WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED,
WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED,
WLR_OUTPUT_ADAPTIVE_SYNC_UNKNOWN, // requested, but maybe disabled
};
enum wlr_output_state_field {
WLR_OUTPUT_STATE_BUFFER = 1 << 0,
WLR_OUTPUT_STATE_DAMAGE = 1 << 1,
@ -53,6 +59,7 @@ enum wlr_output_state_field {
WLR_OUTPUT_STATE_ENABLED = 1 << 3,
WLR_OUTPUT_STATE_SCALE = 1 << 4,
WLR_OUTPUT_STATE_TRANSFORM = 1 << 5,
WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED = 1 << 6,
};
enum wlr_output_state_buffer_type {
@ -74,6 +81,7 @@ struct wlr_output_state {
bool enabled;
float scale;
enum wl_output_transform transform;
bool adaptive_sync_enabled;
// only valid if WLR_OUTPUT_STATE_BUFFER
enum wlr_output_state_buffer_type buffer_type;
@ -126,6 +134,7 @@ struct wlr_output {
float scale;
enum wl_output_subpixel subpixel;
enum wl_output_transform transform;
enum wlr_output_adaptive_sync_status adaptive_sync_status;
bool needs_frame;
// damage for cursors and fullscreen surface, in output-local coordinates
@ -246,6 +255,16 @@ void wlr_output_set_custom_mode(struct wlr_output *output, int32_t width,
*/
void wlr_output_set_transform(struct wlr_output *output,
enum wl_output_transform transform);
/**
* Enables or disables adaptive sync (ie. variable refresh rate) on this
* output. This is just a hint, the backend is free to ignore this setting.
*
* When enabled, compositors can submit frames a little bit later than the
* deadline without dropping a frame.
*
* Adaptive sync is double-buffered state, see `wlr_output_commit`.
*/
void wlr_output_enable_adaptive_sync(struct wlr_output *output, bool enabled);
/**
* Sets a scale for the output.
*

16
types/wlr_output.c
View file

@ -240,6 +240,18 @@ void wlr_output_set_scale(struct wlr_output *output, float scale) {
output->pending.scale = scale;
}
void wlr_output_enable_adaptive_sync(struct wlr_output *output, bool enabled) {
bool currently_enabled =
output->adaptive_sync_status != WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED;
if (currently_enabled == enabled) {
output->pending.committed &= ~WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED;
return;
}
output->pending.committed |= WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED;
output->pending.adaptive_sync_enabled = enabled;
}
void wlr_output_set_subpixel(struct wlr_output *output,
enum wl_output_subpixel subpixel) {
if (output->subpixel == subpixel) {
@ -487,6 +499,10 @@ bool wlr_output_commit(struct wlr_output *output) {
wlr_log(WLR_ERROR, "Tried to modeset a disabled output");
goto error;
}
if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) {
wlr_log(WLR_ERROR, "Tried to enable adaptive sync on a disabled output");
goto error;
}
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);