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output: check for color transform no-op changes

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This allows callers to always set this state and not care whether
the output currently has the same color transform applied.
This commit is contained in:
Simon Ser 2025-06-23 09:15:10 +02:00
parent 0b58bddf13
commit 74ce6c22a5
2 changed files with 16 additions and 2 deletions
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1
include/wlr/types/wlr_output.h
View file

@ -267,6 +267,7 @@ struct wlr_output {
struct {
struct wl_listener display_destroy;
struct wlr_output_image_description image_description_value;
struct wlr_color_transform *color_transform;
} WLR_PRIVATE;
};

17
types/output/output.c
View file

@ -242,6 +242,15 @@ static void output_apply_state(struct wlr_output *output,
}
}
if (state->committed & WLR_OUTPUT_STATE_COLOR_TRANSFORM) {
wlr_color_transform_unref(output->color_transform);
if (state->color_transform != NULL) {
output->color_transform = wlr_color_transform_ref(state->color_transform);
} else {
output->color_transform = NULL;
}
}
bool geometry_updated = state->committed &
(WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_TRANSFORM |
WLR_OUTPUT_STATE_SUBPIXEL);
@ -407,6 +416,7 @@ void wlr_output_finish(struct wlr_output *output) {
wlr_swapchain_destroy(output->cursor_swapchain);
wlr_buffer_unlock(output->cursor_front_buffer);
wlr_color_transform_unref(output->color_transform);
wlr_swapchain_destroy(output->swapchain);
@ -515,8 +525,7 @@ const struct wlr_output_image_description *output_pending_image_description(
* Returns a bitfield of the unchanged fields.
*
* Some fields are not checked: damage always changes in-between frames, the
* gamma LUT is too expensive to check, the contents of the buffer might have
* changed, etc.
* contents of the buffer might have changed, etc.
*/
static uint32_t output_compare_state(struct wlr_output *output,
const struct wlr_output_state *state) {
@ -562,6 +571,10 @@ static uint32_t output_compare_state(struct wlr_output *output,
output->subpixel == state->subpixel) {
fields |= WLR_OUTPUT_STATE_SUBPIXEL;
}
if ((state->committed & WLR_OUTPUT_STATE_COLOR_TRANSFORM) &&
output->color_transform == state->color_transform) {
fields |= WLR_OUTPUT_STATE_COLOR_TRANSFORM;
}
return fields;
}