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output: Add color-representation to output state

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Add color_representation to wlr_output_state, holding color
representation metadata about the primary buffer.  This can be set
using wlr_output_state_set_primary_color_representation() and a
new enum value WLR_OUTPUT_STATE_COLOR_REPRESENTATION in
wlr_output_state.committed indicates when this data is present.

Also add color-representation to wlr_output, and discard
color-representation in wlr_output_state if it matches what's already
been committed to the output.
This commit is contained in:
David Turner 2026-02-10 17:11:13 +00:00
parent 1fa8bb8f7a
commit 58c158dba6
3 changed files with 38 additions and 0 deletions
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16
include/wlr/types/wlr_output.h
View file

@ -77,6 +77,7 @@ enum wlr_output_state_field {
WLR_OUTPUT_STATE_SIGNAL_TIMELINE = 1 << 11,
WLR_OUTPUT_STATE_COLOR_TRANSFORM = 1 << 12,
WLR_OUTPUT_STATE_IMAGE_DESCRIPTION = 1 << 13,
WLR_OUTPUT_STATE_COLOR_REPRESENTATION = 1 << 14,
};
enum wlr_output_state_mode_type {
@ -142,6 +143,10 @@ struct wlr_output_state {
* regular page-flip at the next wlr_output.frame event. */
bool tearing_page_flip;
// Set if (committed & WLR_OUTPUT_STATE_COLOR_REPRESENTATION)
enum wlr_color_encoding color_encoding;
enum wlr_color_range color_range;
enum wlr_output_state_mode_type mode_type;
struct wlr_output_mode *mode;
struct {
@ -205,6 +210,8 @@ struct wlr_output {
enum wl_output_transform transform;
enum wlr_output_adaptive_sync_status adaptive_sync_status;
uint32_t render_format;
enum wlr_color_encoding color_encoding;
enum wlr_color_range color_range;
const struct wlr_output_image_description *image_description;
// Indicates whether making changes to adaptive sync status is supported.
@ -625,6 +632,15 @@ 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);
/**
* Set the color encoding and range of the primary scanout buffer.
*
* Pass WLR_COLOR_ENCODING_NONE / WLR_COLOR_RANGE_NONE to reset to defaults.
*/
void wlr_output_state_set_color_encoding_and_range(
struct wlr_output_state *state,
enum wlr_color_encoding encoding, enum wlr_color_range range);
/**
* Copies the output state from src to dst. It is safe to then
* wlr_output_state_finish() src and have dst still be valid.

14
types/output/output.c
View file

@ -233,6 +233,11 @@ static void output_apply_state(struct wlr_output *output,
output->transform = state->transform;
}
if (state->committed & WLR_OUTPUT_STATE_COLOR_REPRESENTATION) {
output->color_encoding = state->color_encoding;
output->color_range = state->color_range;
}
if (state->committed & WLR_OUTPUT_STATE_IMAGE_DESCRIPTION) {
if (state->image_description != NULL) {
output->image_description_value = *state->image_description;
@ -580,6 +585,11 @@ static uint32_t output_compare_state(struct wlr_output *output,
output->color_transform == state->color_transform) {
fields |= WLR_OUTPUT_STATE_COLOR_TRANSFORM;
}
if ((state->committed & WLR_OUTPUT_STATE_COLOR_REPRESENTATION) &&
output->color_encoding == state->color_encoding &&
output->color_range == state->color_range) {
fields |= WLR_OUTPUT_STATE_COLOR_REPRESENTATION;
}
return fields;
}
@ -632,6 +642,10 @@ static bool output_basic_test(struct wlr_output *output,
wlr_log(WLR_DEBUG, "Tried to set signal timeline without a buffer");
return false;
}
if (state->committed & WLR_OUTPUT_STATE_COLOR_REPRESENTATION) {
wlr_log(WLR_DEBUG, "Tried to set color representation without a buffer");
return false;
}
}
if (state->committed & WLR_OUTPUT_STATE_RENDER_FORMAT) {

8
types/output/state.c
View file

@ -141,6 +141,14 @@ bool wlr_output_state_set_image_description(struct wlr_output_state *state,
return true;
}
void wlr_output_state_set_color_encoding_and_range(
struct wlr_output_state *state,
enum wlr_color_encoding encoding, enum wlr_color_range range) {
state->committed |= WLR_OUTPUT_STATE_COLOR_REPRESENTATION;
state->color_encoding = encoding;
state->color_range = range;
}
bool wlr_output_state_copy(struct wlr_output_state *dst,
const struct wlr_output_state *src) {
struct wlr_output_state copy = *src;