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output: add brightness state

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This commit is contained in:
Simon Ser 2026-05-29 16:55:37 +02:00
parent 15a378316e
commit 82d2cc7c23
3 changed files with 29 additions and 0 deletions
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8
include/wlr/types/wlr_output.h
View file

@ -78,6 +78,7 @@ enum wlr_output_state_field {
WLR_OUTPUT_STATE_COLOR_TRANSFORM = 1 << 12,
WLR_OUTPUT_STATE_IMAGE_DESCRIPTION = 1 << 13,
WLR_OUTPUT_STATE_COLOR_REPRESENTATION = 1 << 14,
WLR_OUTPUT_STATE_BRIGHTNESS = 1 << 15,
};
enum wlr_output_state_mode_type {
@ -165,6 +166,8 @@ struct wlr_output_state {
struct wlr_color_transform *color_transform;
struct wlr_output_image_description *image_description;
float brightness;
};
struct wlr_output_impl;
@ -213,11 +216,14 @@ struct wlr_output {
enum wlr_color_encoding color_encoding;
enum wlr_color_range color_range;
const struct wlr_output_image_description *image_description;
float brightness;
// Indicates whether making changes to adaptive sync status is supported.
// If false, changes to adaptive sync status is guaranteed to fail. If
// true, changes may either succeed or fail.
bool adaptive_sync_supported;
// Indicates whether brightness changes are supported.
bool brightness_supported;
bool needs_frame;
// damage for cursors and fullscreen surface, in output-local coordinates
@ -632,6 +638,8 @@ void wlr_output_state_set_color_transform(struct wlr_output_state *state,
bool wlr_output_state_set_image_description(struct wlr_output_state *state,
const struct wlr_output_image_description *image_desc);
void wlr_output_state_set_brightness(struct wlr_output_state *state, float value);
/**
* Set the color encoding and range of the primary scanout buffer.
*

16
types/output/output.c
View file

@ -261,6 +261,10 @@ static void output_apply_state(struct wlr_output *output,
}
}
if (state->committed & WLR_OUTPUT_STATE_BRIGHTNESS) {
output->brightness = state->brightness;
}
bool geometry_updated = state->committed &
(WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_TRANSFORM |
WLR_OUTPUT_STATE_SUBPIXEL);
@ -359,6 +363,7 @@ void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
.render_format = DRM_FORMAT_XRGB8888,
.transform = WL_OUTPUT_TRANSFORM_NORMAL,
.scale = 1,
.brightness = 1,
.commit_seq = 0,
};
@ -590,6 +595,10 @@ static uint32_t output_compare_state(struct wlr_output *output,
output->color_range == state->color_range) {
fields |= WLR_OUTPUT_STATE_COLOR_REPRESENTATION;
}
if ((state->committed & WLR_OUTPUT_STATE_BRIGHTNESS) &&
output->brightness == state->brightness) {
fields |= WLR_OUTPUT_STATE_BRIGHTNESS;
}
return fields;
}
@ -687,6 +696,7 @@ static bool output_basic_test(struct wlr_output *output,
{ WLR_OUTPUT_STATE_SUBPIXEL, "subpixel" },
{ WLR_OUTPUT_STATE_COLOR_TRANSFORM, "color transform" },
{ WLR_OUTPUT_STATE_IMAGE_DESCRIPTION, "image description" },
{ WLR_OUTPUT_STATE_BRIGHTNESS, "brightness" },
};
if (!enabled) {
for (size_t i = 0; i < sizeof(needs_enabled) / sizeof(needs_enabled[0]); i++) {
@ -726,6 +736,12 @@ static bool output_basic_test(struct wlr_output *output,
}
}
if ((state->committed & WLR_OUTPUT_STATE_BRIGHTNESS) &&
!output->brightness_supported) {
wlr_log(WLR_DEBUG, "Brightness is not supported for this output");
return false;
}
return true;
}

5
types/output/state.c
View file

@ -149,6 +149,11 @@ void wlr_output_state_set_color_encoding_and_range(
state->color_range = range;
}
void wlr_output_state_set_brightness(struct wlr_output_state *state, float value) {
state->committed |= WLR_OUTPUT_STATE_BRIGHTNESS;
state->brightness = value;
}
bool wlr_output_state_copy(struct wlr_output_state *dst,
const struct wlr_output_state *src) {
struct wlr_output_state copy = *src;