Handle gamma-control-v1 set_gamma events

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4046

1 files changed, 25 insertions, 0 deletions

diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 43ce2d70..09353c15 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -9,6 +9,7 @@
 #include <wlr/render/swapchain.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_buffer.h>
+#include <wlr/types/wlr_gamma_control_v1.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_output.h>
@@ -564,6 +565,7 @@ static int output_repaint_timer_handler(void *data) {
         wlr_output->frame_pending = false;
 
         if (!wlr_output->needs_frame &&
+                        !output->gamma_lut_changed &&
                         !pixman_region32_not_empty(&output->damage_ring.current)) {
                 return 0;
         }
@@ -578,6 +580,19 @@ static int output_repaint_timer_handler(void *data) {
                 fullscreen_con = workspace->current.fullscreen;
         }
 
+        if (output->gamma_lut_changed) {
+                struct wlr_gamma_control_v1 *gamma_control =
+                        wlr_gamma_control_manager_v1_get_control(
+                        server.gamma_control_manager_v1, wlr_output);
+                if (!wlr_gamma_control_v1_apply(gamma_control, &wlr_output->pending)) {
+                        return 0;
+                }
+                if (!wlr_output_test(wlr_output)) {
+                        wlr_output_rollback(wlr_output);
+                        wlr_gamma_control_v1_send_failed_and_destroy(gamma_control);
+                }
+        }
+
         pixman_region32_t frame_damage;
         get_frame_damage(output, &frame_damage);
         wlr_output_set_damage(wlr_output, &frame_damage);
@@ -1076,6 +1091,16 @@ void handle_output_layout_change(struct wl_listener *listener,
         update_output_manager_config(server);
 }
 
+void handle_gamma_control_set_gamma(struct wl_listener *listener, void *data) {
+        struct sway_server *server =
+                wl_container_of(listener, server, gamma_control_set_gamma);
+        const struct wlr_gamma_control_manager_v1_set_gamma_event *event = data;
+
+        struct sway_output *output = event->output->data;
+        output->gamma_lut_changed = true;
+        wlr_output_schedule_frame(output->wlr_output);
+}
+
 static void output_manager_apply(struct sway_server *server,
                 struct wlr_output_configuration_v1 *config, bool test_only) {
         // TODO: perform atomic tests on the whole backend atomically