From 364572b95c8354ac66674064a8058aa98bc0bbef Mon Sep 17 00:00:00 2001
From: Daniel van Vugt <daniel.van.vugt@canonical.com>
Date: Tue, 12 Apr 2022 18:34:58 +0800
Subject: [PATCH] kms/crtc: Add function meta_kms_crtc_has_gamma

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2360>
---
 src/backends/native/meta-kms-crtc.c | 7 +++++++
 src/backends/native/meta-kms-crtc.h | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/backends/native/meta-kms-crtc.c b/src/backends/native/meta-kms-crtc.c
index 1ae3d8417..8c2f8d783 100644
--- a/src/backends/native/meta-kms-crtc.c
+++ b/src/backends/native/meta-kms-crtc.c
@@ -92,6 +92,13 @@ meta_kms_crtc_is_active (MetaKmsCrtc *crtc)
   return crtc->current_state.is_active;
 }
 
+
+gboolean
+meta_kms_crtc_has_gamma (MetaKmsCrtc *crtc)
+{
+  return !!meta_kms_crtc_get_prop_id (crtc, META_KMS_CRTC_PROP_GAMMA_LUT);
+}
+
 static void
 read_gamma_state (MetaKmsCrtc       *crtc,
                   MetaKmsCrtcState  *crtc_state,
diff --git a/src/backends/native/meta-kms-crtc.h b/src/backends/native/meta-kms-crtc.h
index 218bec9a1..54801dd96 100644
--- a/src/backends/native/meta-kms-crtc.h
+++ b/src/backends/native/meta-kms-crtc.h
@@ -71,6 +71,8 @@ uint32_t meta_kms_crtc_get_id (MetaKmsCrtc *crtc);
 
 int meta_kms_crtc_get_idx (MetaKmsCrtc *crtc);
 
+gboolean meta_kms_crtc_has_gamma (MetaKmsCrtc *crtc);
+
 META_EXPORT_TEST
 gboolean meta_kms_crtc_is_active (MetaKmsCrtc *crtc);