core: refactor and improve surface commit (#9805)

* make CHLBufferReference not a SP anymore

* copy over release and acquire points in CHLBufferReference

* use CHLBufferReference in screencopy and toplevel export

TODO: use CHLBufferReference in direct scanout properly
      the only problem is the scanout buffer release timing,
      specifically the onBackendRelease mechanism

* cleanup SSurfaceState and surface pending commit tracking

* move surface code from DRMSyncobj, and move acquire to SSurfaceState

* use queue for comitted pending surface states like proto says

"The content update is placed in a queue until it becomes active." - wl_surface::commit

* drop, not release, prev buffer if 2nd buffer wl_surface.attach is sent

"A wl_buffer that has been attached and then replaced by another attach instead of committed will not receive a release event, and is not used by the compositor." - wl_surface::attach

1 files changed, 4 insertions, 7 deletions

diff --git a/src/protocols/DRMSyncobj.hpp b/src/protocols/DRMSyncobj.hpp
index d2259a34..a724258b 100644
--- a/src/protocols/DRMSyncobj.hpp
+++ b/src/protocols/DRMSyncobj.hpp
@@ -5,14 +5,11 @@
 #include "../helpers/sync/SyncReleaser.hpp"
 #include "linux-drm-syncobj-v1.hpp"
 #include "../helpers/signal/Signal.hpp"
-#include "types/SurfaceState.hpp"
 #include <hyprutils/os/FileDescriptor.hpp>
-#include <list>
 
 class CWLSurfaceResource;
 class CDRMSyncobjTimelineResource;
 class CSyncTimeline;
-struct SSurfaceState;
 
 class CDRMSyncPointState {
   public:
@@ -28,6 +25,10 @@ class CDRMSyncPointState {
     Hyprutils::OS::CFileDescriptor                   exportAsFD();
     void                                             signal();
 
+    operator bool() const {
+        return m_timeline;
+    }
+
   private:
     SP<CSyncTimeline> m_timeline         = {};
     uint64_t          m_point            = 0;
@@ -38,19 +39,15 @@ class CDRMSyncPointState {
 class CDRMSyncobjSurfaceResource {
   public:
     CDRMSyncobjSurfaceResource(UP<CWpLinuxDrmSyncobjSurfaceV1>&& resource_, SP<CWLSurfaceResource> surface_);
-    ~CDRMSyncobjSurfaceResource();
 
-    bool protocolError();
     bool good();
 
   private:
-    void                            removeAllWaiters();
     WP<CWLSurfaceResource>          surface;
     UP<CWpLinuxDrmSyncobjSurfaceV1> resource;
 
     CDRMSyncPointState              pendingAcquire;
     CDRMSyncPointState              pendingRelease;
-    std::vector<SP<SSurfaceState>>  pendingStates;
 
     struct {
         CHyprSignalListener surfacePrecommit;