tearing-control: hyprland impl (#5655)

* tearing: hl impl

* format

CMakeLists.txt

@@ -263,6 +263,7 @@ protocol("staging/fractional-scale/fractional-scale-v1.xml" "fractional-scale-v1
 protocol("staging/tearing-control/tearing-control-v1.xml" "tearing-control-v1" false)
 protocol("unstable/text-input/text-input-unstable-v1.xml" "text-input-unstable-v1" false)
 protocol("staging/cursor-shape/cursor-shape-v1.xml" "cursor-shape-v1" false)
+protocol("staging/tearing-control/tearing-control-v1.xml" "tearing-control-v1" false)
 
 # tools
 add_subdirectory(hyprctl)

src/Compositor.cpp

@@ -253,8 +253,6 @@ void CCompositor::initServer() {
 
     m_sWLRCursorShapeMgr = wlr_cursor_shape_manager_v1_create(m_sWLDisplay, 1);
 
-    m_sWLRTearingControlMgr = wlr_tearing_control_manager_v1_create(m_sWLDisplay, 1);
-
     if (!m_sWLRHeadlessBackend) {
         Debug::log(CRIT, "Couldn't create the headless backend");
         throwError("wlr_headless_backend_create() failed!");
@@ -311,7 +309,6 @@ void CCompositor::initAllSignals() {
     addWLSignal(&m_sWLRSessionLockMgr->events.new_lock, &Events::listen_newSessionLock, m_sWLRSessionLockMgr, "SessionLockMgr");
     addWLSignal(&m_sWLRGammaCtrlMgr->events.set_gamma, &Events::listen_setGamma, m_sWLRGammaCtrlMgr, "GammaCtrlMgr");
     addWLSignal(&m_sWLRCursorShapeMgr->events.request_set_shape, &Events::listen_setCursorShape, m_sWLRCursorShapeMgr, "CursorShapeMgr");
-    addWLSignal(&m_sWLRTearingControlMgr->events.new_object, &Events::listen_newTearingHint, m_sWLRTearingControlMgr, "TearingControlMgr");
     addWLSignal(&m_sWLRKbShInhibitMgr->events.new_inhibitor, &Events::listen_newShortcutInhibitor, m_sWLRKbShInhibitMgr, "ShortcutInhibitMgr");
 
     if (m_sWRLDRMLeaseMgr)
@@ -365,7 +362,6 @@ void CCompositor::removeAllSignals() {
     removeWLSignal(&Events::listen_newSessionLock);
     removeWLSignal(&Events::listen_setGamma);
     removeWLSignal(&Events::listen_setCursorShape);
-    removeWLSignal(&Events::listen_newTearingHint);
     removeWLSignal(&Events::listen_newShortcutInhibitor);
 
     if (m_sWRLDRMLeaseMgr)
@@ -695,6 +691,8 @@ CMonitor* CCompositor::getMonitorFromVector(const Vector2D& point) {
 
 void CCompositor::removeWindowFromVectorSafe(CWindow* pWindow) {
     if (windowExists(pWindow) && !pWindow->m_bFadingOut) {
+        EMIT_HOOK_EVENT("destroyWindow", pWindow);
+
         std::erase_if(m_vWindows, [&](std::unique_ptr<CWindow>& el) { return el.get() == pWindow; });
         std::erase_if(m_vWindowsFadingOut, [&](CWindow* el) { return el == pWindow; });
     }

src/Compositor.hpp

@@ -82,7 +82,6 @@ class CCompositor {
     wlr_session_lock_manager_v1*               m_sWLRSessionLockMgr;
     wlr_gamma_control_manager_v1*              m_sWLRGammaCtrlMgr;
     wlr_cursor_shape_manager_v1*               m_sWLRCursorShapeMgr;
-    wlr_tearing_control_manager_v1*            m_sWLRTearingControlMgr;
     // ------------------------------------------------- //
 
     std::string                               m_szWLDisplaySocket   = "";

src/desktop/Window.cpp

@@ -535,14 +535,6 @@ void CWindow::onMap() {
     m_vReportedSize = m_vPendingReportedSize;
     m_bAnimatingIn  = true;
 
-    for (const auto& ctrl : g_pHyprRenderer->m_vTearingControllers) {
-        if (ctrl->pWlrHint->surface != m_pWLSurface.wlr())
-            continue;
-
-        m_bTearingHint = ctrl->pWlrHint->current;
-        break;
-    }
-
     if (m_bIsX11)
         return;
 

src/events/Events.hpp

@@ -144,9 +144,6 @@ namespace Events {
     // Cursor shape
     LISTENER(setCursorShape);
 
-    // Tearing hints
-    LISTENER(newTearingHint);
-
     // Shortcut inhibitor
     LISTENER(newShortcutInhibitor);
 };

src/events/Misc.cpp

@@ -245,37 +245,6 @@ void Events::listener_setCursorShape(wl_listener* listener, void* data) {
     g_pInputManager->processMouseRequest(E);
 }
 
-void Events::listener_newTearingHint(wl_listener* listener, void* data) {
-    Debug::log(LOG, "New tearing hint at {:x}", (uintptr_t)data);
-
-    const auto NEWCTRL = g_pHyprRenderer->m_vTearingControllers.emplace_back(std::make_unique<STearingController>()).get();
-    NEWCTRL->pWlrHint  = (wlr_tearing_control_v1*)data;
-
-    NEWCTRL->hyprListener_destroy.initCallback(
-        &NEWCTRL->pWlrHint->events.destroy,
-        [&](void* owner, void* data) {
-            Debug::log(LOG, "Destroyed {:x} tearing hint", (uintptr_t)((STearingController*)owner)->pWlrHint);
-
-            std::erase_if(g_pHyprRenderer->m_vTearingControllers, [&](const auto& other) { return other.get() == owner; });
-        },
-        NEWCTRL, "TearingController");
-
-    NEWCTRL->hyprListener_set.initCallback(
-        &NEWCTRL->pWlrHint->events.set_hint,
-        [&](void* owner, void* data) {
-            const auto TEARINGHINT = (STearingController*)owner;
-
-            const auto PWINDOW = g_pCompositor->getWindowFromSurface(TEARINGHINT->pWlrHint->surface);
-
-            if (PWINDOW) {
-                PWINDOW->m_bTearingHint = (bool)TEARINGHINT->pWlrHint->current;
-
-                Debug::log(LOG, "Hint {:x} (window {}) set tearing hint to {}", (uintptr_t)TEARINGHINT->pWlrHint, PWINDOW, (uint32_t)TEARINGHINT->pWlrHint->current);
-            }
-        },
-        NEWCTRL, "TearingController");
-}
-
 void Events::listener_newShortcutInhibitor(wl_listener* listener, void* data) {
     const auto INHIBITOR = (wlr_keyboard_shortcuts_inhibitor_v1*)data;
 

src/helpers/WLClasses.hpp

@@ -329,17 +329,6 @@ struct SSwitchDevice {
     }
 };
 
-struct STearingController {
-    wlr_tearing_control_v1* pWlrHint = nullptr;
-
-    DYNLISTENER(set);
-    DYNLISTENER(destroy);
-
-    bool operator==(const STearingController& other) const {
-        return pWlrHint == other.pWlrHint;
-    }
-};
-
 struct SShortcutInhibitor {
     wlr_keyboard_shortcuts_inhibitor_v1* pWlrInhibitor = nullptr;
 

src/includes.hpp

@@ -103,7 +103,6 @@ extern "C" {
 #include <wlr/types/wlr_single_pixel_buffer_v1.h>
 #include <wlr/types/wlr_idle_notify_v1.h>
 #include <wlr/types/wlr_cursor_shape_v1.h>
-#include <wlr/types/wlr_tearing_control_v1.h>
 #include <wlr/util/box.h>
 #include <wlr/util/transform.h>
 #include <wlr/render/swapchain.h>

src/managers/ProtocolManager.cpp

@@ -1,6 +1,9 @@
 #include "ProtocolManager.hpp"
 
+#include "../protocols/TearingControl.hpp"
+
 #include "xdg-output-unstable-v1-protocol.h"
+#include "tearing-control-v1-protocol.h"
 
 CProtocolManager::CProtocolManager() {
     m_pToplevelExportProtocolManager  = std::make_unique<CToplevelExportProtocolManager>();
@@ -10,4 +13,5 @@ CProtocolManager::CProtocolManager() {
     m_pScreencopyProtocolManager      = std::make_unique<CScreencopyProtocolManager>();
 
     m_pXDGOutputProtocol = std::make_unique<CXDGOutputProtocol>(&zxdg_output_manager_v1_interface, 3, "XDGOutput");
+    PROTO::tearing       = std::make_unique<CTearingControlProtocol>(&wp_tearing_control_manager_v1_interface, 1, "TearingControl");
 }

src/protocols/TearingControl.cpp

@@ -0,0 +1,106 @@
+#include "TearingControl.hpp"
+#include "tearing-control-v1-protocol.h"
+#include "../managers/ProtocolManager.hpp"
+#include "../desktop/Window.hpp"
+#include "../Compositor.hpp"
+
+static void destroyManager(wl_client* client, wl_resource* resource) {
+    RESOURCE_OR_BAIL(PRESOURCE);
+    reinterpret_cast<CTearingControlProtocol*>(PRESOURCE->data())->onManagerResourceDestroy(resource);
+}
+
+static void getTearingControl(wl_client* client, wl_resource* resource, uint32_t id, wl_resource* surface) {
+    RESOURCE_OR_BAIL(PRESOURCE);
+    reinterpret_cast<CTearingControlProtocol*>(PRESOURCE->data())->onGetController(client, resource, id, wlr_surface_from_resource(surface));
+}
+
+//
+
+CTearingControlProtocol::CTearingControlProtocol(const wl_interface* iface, const int& ver, const std::string& name) : IWaylandProtocol(iface, ver, name) {
+    g_pHookSystem->hookDynamic("destroyWindow", [this](void* self, SCallbackInfo& info, std::any param) { this->onWindowDestroy(std::any_cast<CWindow*>(param)); });
+}
+
+static const struct wp_tearing_control_manager_v1_interface MANAGER_IMPL = {
+    .destroy             = ::destroyManager,
+    .get_tearing_control = ::getTearingControl,
+};
+
+void CTearingControlProtocol::bindManager(wl_client* client, void* data, uint32_t ver, uint32_t id) {
+    const auto RESOURCE = m_vManagers.emplace_back(std::make_unique<CWaylandResource>(client, &wp_tearing_control_manager_v1_interface, ver, id)).get();
+
+    if (!RESOURCE->good()) {
+        Debug::log(LOG, "Couldn't bind TearingControlMgr");
+        return;
+    }
+
+    RESOURCE->setImplementation(&MANAGER_IMPL, nullptr);
+    RESOURCE->setData(this);
+}
+
+void CTearingControlProtocol::onManagerResourceDestroy(wl_resource* res) {
+    std::erase_if(m_vManagers, [&](const auto& other) { return other->resource() == res; });
+}
+
+void CTearingControlProtocol::onGetController(wl_client* client, wl_resource* resource, uint32_t id, wlr_surface* surf) {
+    const auto CONTROLLER = m_vTearingControllers
+                                .emplace_back(std::make_unique<CTearingControl>(
+                                    std::make_shared<CWaylandResource>(client, &wp_tearing_control_v1_interface, wl_resource_get_version(resource), id), surf))
+                                .get();
+
+    if (!CONTROLLER->good()) {
+        m_vTearingControllers.pop_back();
+        return;
+    }
+}
+
+void CTearingControlProtocol::onControllerDestroy(CTearingControl* control) {
+    std::erase_if(m_vTearingControllers, [control](const auto& other) { return other.get() == control; });
+}
+
+void CTearingControlProtocol::onWindowDestroy(CWindow* pWindow) {
+    for (auto& c : m_vTearingControllers) {
+        if (c->pWindow == pWindow)
+            c->pWindow = nullptr;
+    }
+}
+
+//
+
+static void destroyController(wl_client* client, wl_resource* resource) {
+    RESOURCE_OR_BAIL(PRESOURCE);
+    PROTO::tearing->onControllerDestroy(reinterpret_cast<CTearingControl*>(PRESOURCE->data()));
+}
+
+static void setPresentationHint(wl_client* client, wl_resource* resource, uint32_t hint) {
+    RESOURCE_OR_BAIL(PRESOURCE);
+    reinterpret_cast<CTearingControl*>(PRESOURCE->data())->onHint(hint);
+}
+
+static const struct wp_tearing_control_v1_interface CONTROLLER_IMPL = {
+    .set_presentation_hint = ::setPresentationHint,
+    .destroy               = ::destroyController,
+};
+
+CTearingControl::CTearingControl(SP<CWaylandResource> resource_, wlr_surface* surf_) : resource(resource_) {
+    resource->setImplementation(&CONTROLLER_IMPL, nullptr);
+    resource->setData(this);
+    resource->setOnDestroyHandler([](CWaylandResource* res) { PROTO::tearing->onControllerDestroy(reinterpret_cast<CTearingControl*>(res->data())); });
+
+    pWindow = g_pCompositor->getWindowFromSurface(surf_);
+}
+
+void CTearingControl::onHint(uint32_t hint_) {
+    hint = hint_ == WP_TEARING_CONTROL_V1_PRESENTATION_HINT_VSYNC ? TEARING_VSYNC : TEARING_ASYNC;
+    updateWindow();
+}
+
+void CTearingControl::updateWindow() {
+    if (!pWindow)
+        return;
+
+    pWindow->m_bTearingHint = hint == TEARING_ASYNC;
+}
+
+bool CTearingControl::good() {
+    return resource->good();
+}

src/protocols/TearingControl.hpp

@@ -0,0 +1,60 @@
+#pragma once
+
+#include <memory>
+#include "WaylandProtocol.hpp"
+
+class CWindow;
+
+enum eTearingPresentationHint {
+    TEARING_VSYNC = 0,
+    TEARING_ASYNC,
+};
+
+class CTearingControlProtocol;
+
+class CTearingControl {
+  public:
+    CTearingControl(SP<CWaylandResource> resource_, wlr_surface* surf_);
+
+    void onHint(uint32_t hint_);
+
+    bool good();
+
+    bool operator==(const wl_resource* other) const {
+        return other == resource->resource();
+    }
+
+    bool operator==(const CTearingControl* other) const {
+        return other->resource == resource;
+    }
+
+  private:
+    void                     updateWindow();
+
+    SP<CWaylandResource>     resource;
+    CWindow*                 pWindow = nullptr;
+    eTearingPresentationHint hint    = TEARING_VSYNC;
+
+    friend class CTearingControlProtocol;
+};
+
+class CTearingControlProtocol : public IWaylandProtocol {
+  public:
+    CTearingControlProtocol(const wl_interface* iface, const int& ver, const std::string& name);
+
+    virtual void bindManager(wl_client* client, void* data, uint32_t ver, uint32_t id);
+
+    void         onManagerResourceDestroy(wl_resource* res);
+    void         onControllerDestroy(CTearingControl* control);
+    void         onGetController(wl_client* client, wl_resource* resource, uint32_t id, wlr_surface* surf);
+
+  private:
+    void                              onWindowDestroy(CWindow* pWindow);
+
+    std::vector<UP<CWaylandResource>> m_vManagers;
+    std::vector<UP<CTearingControl>>  m_vTearingControllers;
+};
+
+namespace PROTO {
+    inline UP<CTearingControlProtocol> tearing;
+};

src/protocols/WaylandProtocol.cpp

@@ -31,7 +31,14 @@ void CWaylandResource::markDefunct() {
 
     Debug::log(TRACE, "[wl res {:x}] now defunct", (uintptr_t)m_pWLResource);
     m_bDefunct = true;
+
     wl_resource_set_user_data(m_pWLResource, nullptr);
+
+    // we call it here because we need defunct to be set to true.
+    // if this function destroys us, we can't call wl_resource_set_user_data or
+    // destroy the resource.
+    if (m_fOnDestroyHandler)
+        m_fOnDestroyHandler(this);
 }
 
 CWaylandResource::~CWaylandResource() {
@@ -80,6 +87,10 @@ void* CWaylandResource::data() {
     return m_pData;
 }
 
+void CWaylandResource::setOnDestroyHandler(std::function<void(CWaylandResource* res)> fn) {
+    m_fOnDestroyHandler = fn;
+}
+
 static void bindManagerInternal(wl_client* client, void* data, uint32_t ver, uint32_t id) {
     ((IWaylandProtocol*)data)->bindManager(client, data, ver, id);
 }

src/protocols/WaylandProtocol.hpp

@@ -2,11 +2,18 @@
 
 #include "../defines.hpp"
 
+#include <functional>
+
 #define RESOURCE_OR_BAIL(resname)                                                                                                                                                  \
     const auto resname = (CWaylandResource*)wl_resource_get_user_data(resource);                                                                                                   \
     if (!resname)                                                                                                                                                                  \
         return;
 
+#define SP std::shared_ptr
+#define UP std::unique_ptr
+
+#define PROTO NProtocols
+
 class CWaylandResource {
   public:
     CWaylandResource(wl_client* client, const wl_interface* wlInterface, uint32_t version, uint32_t id);
@@ -24,12 +31,15 @@ class CWaylandResource {
     void*        data();
     void         setData(void* data);
 
+    void         setOnDestroyHandler(std::function<void(CWaylandResource* res)> fn);
+
   private:
     bool                                       m_bImplementationSet = false;
     bool                                       m_bDefunct           = false; // m_liResourceDestroy fired
     wl_client*                                 m_pWLClient          = nullptr;
     wl_resource*                               m_pWLResource        = nullptr;
     void*                                      m_pData              = nullptr;
+    std::function<void(CWaylandResource* res)> m_fOnDestroyHandler;
 };
 
 class IWaylandProtocol {

src/render/Renderer.hpp

@@ -98,8 +98,6 @@ class CHyprRenderer {
     wl_event_source* m_pCrashingLoop       = nullptr;
     wl_event_source* m_pCursorTicker       = nullptr;
 
-    std::vector<std::unique_ptr<STearingController>> m_vTearingControllers;
-
     CTimer           m_tRenderTimer;
 
     struct {