diff --git a/CMakeLists.txt b/CMakeLists.txt
index 675880a..9adf819 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ set(INCLUDE ${CMAKE_INSTALL_FULL_INCLUDEDIR})
 set(LIBDIR ${CMAKE_INSTALL_FULL_LIBDIR})
 
 find_package(PkgConfig REQUIRED)
-pkg_check_modules(deps REQUIRED IMPORTED_TARGET libseat libinput wayland-client wayland-protocols hyprutils>=0.1.2 pixman-1 wayland-client libdrm gbm libudev)
+pkg_check_modules(deps REQUIRED IMPORTED_TARGET libseat libinput wayland-client wayland-protocols hyprutils>=0.1.2 pixman-1 wayland-client libdrm gbm libudev libdisplay-info)
 
 configure_file(aquamarine.pc.in aquamarine.pc @ONLY)
 
diff --git a/include/aquamarine/allocator/Allocator.hpp b/include/aquamarine/allocator/Allocator.hpp
index 35b20e5..09c6b74 100644
--- a/include/aquamarine/allocator/Allocator.hpp
+++ b/include/aquamarine/allocator/Allocator.hpp
@@ -9,7 +9,8 @@ namespace Aquamarine {
 
     struct SAllocatorBufferParams {
         Hyprutils::Math::Vector2D size;
-        uint32_t                  format = DRM_FORMAT_INVALID;
+        uint32_t                  format  = DRM_FORMAT_INVALID;
+        bool                      scanout = false;
     };
 
     class IAllocator {
diff --git a/include/aquamarine/allocator/Swapchain.hpp b/include/aquamarine/allocator/Swapchain.hpp
index 90fdc68..885bb3d 100644
--- a/include/aquamarine/allocator/Swapchain.hpp
+++ b/include/aquamarine/allocator/Swapchain.hpp
@@ -7,7 +7,8 @@ namespace Aquamarine {
     struct SSwapchainOptions {
         size_t                    length = 0;
         Hyprutils::Math::Vector2D size;
-        uint32_t                  format = DRM_FORMAT_INVALID;
+        uint32_t                  format  = DRM_FORMAT_INVALID;
+        bool                      scanout = false;
     };
 
     class CSwapchain {
diff --git a/include/aquamarine/backend/Backend.hpp b/include/aquamarine/backend/Backend.hpp
index ab8ef49..559c740 100644
--- a/include/aquamarine/backend/Backend.hpp
+++ b/include/aquamarine/backend/Backend.hpp
@@ -100,6 +100,9 @@ namespace Aquamarine {
         /* Get the primary DRM FD */
         int drmFD();
 
+        /* Get the render formats the primary backend supports */
+        std::vector<SDRMFormat> getPrimaryRenderFormats();
+
         struct {
             Hyprutils::Signal::CSignal newOutput;
             Hyprutils::Signal::CSignal newPointer;
diff --git a/include/aquamarine/backend/DRM.hpp b/include/aquamarine/backend/DRM.hpp
index 2844a2a..9c94c67 100644
--- a/include/aquamarine/backend/DRM.hpp
+++ b/include/aquamarine/backend/DRM.hpp
@@ -10,16 +10,51 @@
 
 namespace Aquamarine {
     class CDRMBackend;
+    class CDRMFB;
     struct SDRMConnector;
 
-    struct SDRMFB {
+    typedef std::function<void(void)> FIdleCallback;
+
+    class CDRMBufferUnimportable : public IAttachment {
+      public:
+        CDRMBufferUnimportable() {
+            ;
+        }
+        virtual ~CDRMBufferUnimportable() {
+            ;
+        }
+        virtual eAttachmentType type() {
+            return AQ_ATTACHMENT_DRM_KMS_UNIMPORTABLE;
+        }
+    };
+
+    class CDRMFB {
+      public:
+        ~CDRMFB();
+
+        static Hyprutils::Memory::CSharedPointer<CDRMFB> create(Hyprutils::Memory::CSharedPointer<IBuffer> buffer_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_);
+
+        void                                             closeHandles();
+        // drops the buffer from KMS
+        void                                         drop();
+
         uint32_t                                     id = 0;
         Hyprutils::Memory::CSharedPointer<IBuffer>   buffer;
         Hyprutils::Memory::CWeakPointer<CDRMBackend> backend;
+
+      private:
+        CDRMFB(Hyprutils::Memory::CSharedPointer<IBuffer> buffer_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_);
+        uint32_t                submitBuffer();
+
+        bool                    dropped = false, handlesClosed = false;
+
+        std::array<uint32_t, 4> boHandles = {0};
     };
 
     struct SDRMLayer {
-        Hyprutils::Memory::CSharedPointer<SDRMFB>    current /* displayed */, queued /* submitted */, pending /* to be submitted */;
+        // we expect the consumers to use double-buffering, so we keep the 2 last FBs around. If any of these goes out of
+        // scope, the DRM FB will be destroyed, but the IBuffer will stay, as long as it's ref'd somewhere.
+        Hyprutils::Memory::CSharedPointer<CDRMFB>    front /* currently displaying */, back;
         Hyprutils::Memory::CWeakPointer<CDRMBackend> backend;
     };
 
@@ -30,7 +65,7 @@ namespace Aquamarine {
         uint32_t                                     id        = 0;
         uint32_t                                     initialID = 0;
 
-        Hyprutils::Memory::CSharedPointer<SDRMFB>    current /* displayed */, queued /* submitted */;
+        Hyprutils::Memory::CSharedPointer<CDRMFB>    front /* currently displaying */, back /* submitted */;
         Hyprutils::Memory::CWeakPointer<CDRMBackend> backend;
         Hyprutils::Memory::CWeakPointer<SDRMPlane>   self;
         std::vector<SDRMFormat>                      formats;
@@ -108,12 +143,29 @@ namespace Aquamarine {
       private:
         CDRMOutput(const std::string& name_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_, Hyprutils::Memory::CSharedPointer<SDRMConnector> connector_);
 
+        bool                                             commitState(bool onlyTest = false);
+
         Hyprutils::Memory::CWeakPointer<CDRMBackend>     backend;
         Hyprutils::Memory::CSharedPointer<SDRMConnector> connector;
 
         friend struct SDRMConnector;
     };
 
+    struct SDRMPageFlip {
+        Hyprutils::Memory::CWeakPointer<SDRMConnector> connector;
+    };
+
+    struct SDRMConnectorCommitData {
+        Hyprutils::Memory::CSharedPointer<CDRMFB> mainFB, cursorFB;
+        bool                                      modeset  = false;
+        bool                                      blocking = false;
+        uint32_t                                  flags    = 0;
+        bool                                      test     = false;
+        drmModeModeInfo                           modeInfo;
+
+        void                                      calculateMode(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector);
+    };
+
     struct SDRMConnector {
         ~SDRMConnector();
 
@@ -123,6 +175,10 @@ namespace Aquamarine {
         Hyprutils::Memory::CSharedPointer<SDRMCRTC>    getCurrentCRTC(const drmModeConnector* connector);
         drmModeModeInfo*                               getCurrentMode();
         void                                           parseEDID(std::vector<uint8_t> data);
+        bool                                           commitState(const SDRMConnectorCommitData& data);
+        void                                           applyCommit(const SDRMConnectorCommitData& data);
+        void                                           rollbackCommit(const SDRMConnectorCommitData& data);
+        void                                           onPresent();
 
         Hyprutils::Memory::CSharedPointer<CDRMOutput>  output;
         Hyprutils::Memory::CWeakPointer<CDRMBackend>   backend;
@@ -135,10 +191,16 @@ namespace Aquamarine {
         int32_t                                        refresh       = 0;
         uint32_t                                       possibleCrtcs = 0;
         std::string                                    make, serial, model;
+        bool                                           canDoVrr = false;
 
         bool                                           cursorEnabled = false;
         Hyprutils::Math::Vector2D                      cursorPos, cursorSize, cursorHotspot;
-        Hyprutils::Memory::CSharedPointer<SDRMFB>      pendingCursorFB;
+        Hyprutils::Memory::CSharedPointer<CDRMFB>      pendingCursorFB;
+
+        bool                                           isPageFlipPending = false;
+        SDRMPageFlip                                   pendingPageFlip;
+
+        drmModeModeInfo                                fallbackModeInfo;
 
         union UDRMConnectorProps {
             struct {
@@ -162,6 +224,11 @@ namespace Aquamarine {
         UDRMConnectorProps props;
     };
 
+    class IDRMImplementation {
+      public:
+        virtual bool commit(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data) = 0;
+    };
+
     class CDRMBackend : public IBackendImplementation {
       public:
         virtual ~CDRMBackend();
@@ -178,6 +245,11 @@ namespace Aquamarine {
 
         Hyprutils::Memory::CWeakPointer<CDRMBackend> self;
 
+        void                                         log(eBackendLogLevel, const std::string&);
+        bool                                         sessionActive();
+
+        std::vector<FIdleCallback>                   idleCallbacks;
+
       private:
         CDRMBackend(Hyprutils::Memory::CSharedPointer<CBackend> backend);
 
@@ -189,6 +261,7 @@ namespace Aquamarine {
         void scanConnectors();
 
         Hyprutils::Memory::CSharedPointer<CSessionDevice>             gpu;
+        Hyprutils::Memory::CSharedPointer<IDRMImplementation>         impl;
         Hyprutils::Memory::CWeakPointer<CDRMBackend>                  primary;
 
         Hyprutils::Memory::CWeakPointer<CBackend>                     backend;
@@ -205,10 +278,13 @@ namespace Aquamarine {
         } drmProps;
 
         friend class CBackend;
-        friend struct SDRMFB;
+        friend class CDRMFB;
+        friend class CDRMFBAttachment;
         friend struct SDRMConnector;
         friend struct SDRMCRTC;
         friend struct SDRMPlane;
-        friend struct CDRMOutput;
+        friend class CDRMOutput;
+        friend struct SDRMPageFlip;
+        friend class CDRMLegacyImpl;
     };
 };
diff --git a/include/aquamarine/backend/drm/Legacy.hpp b/include/aquamarine/backend/drm/Legacy.hpp
new file mode 100644
index 0000000..9baff38
--- /dev/null
+++ b/include/aquamarine/backend/drm/Legacy.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "../DRM.hpp"
+
+namespace Aquamarine {
+    class CDRMLegacyImpl : public IDRMImplementation {
+      public:
+        CDRMLegacyImpl(Hyprutils::Memory::CSharedPointer<CDRMBackend> backend_);
+        virtual bool commit(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data);
+
+      private:
+
+        bool commitInternal(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data);
+        bool testInternal(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data);
+
+        Hyprutils::Memory::CWeakPointer<CDRMBackend> backend;
+    };
+};
diff --git a/include/aquamarine/buffer/Buffer.hpp b/include/aquamarine/buffer/Buffer.hpp
index 9aa1cb5..77e428c 100644
--- a/include/aquamarine/buffer/Buffer.hpp
+++ b/include/aquamarine/buffer/Buffer.hpp
@@ -4,6 +4,7 @@
 #include <tuple>
 #include <hyprutils/signal/Signal.hpp>
 #include <hyprutils/math/Region.hpp>
+#include "../misc/Attachment.hpp"
 
 namespace Aquamarine {
     enum eBufferCapability {
@@ -62,6 +63,8 @@ namespace Aquamarine {
         Hyprutils::Math::Vector2D                      size;
         bool                                           opaque = false;
 
+        CAttachmentManager attachments;
+
         struct {
             Hyprutils::Signal::CSignal destroy;
         } events;
diff --git a/include/aquamarine/misc/Attachment.hpp b/include/aquamarine/misc/Attachment.hpp
new file mode 100644
index 0000000..969eea2
--- /dev/null
+++ b/include/aquamarine/misc/Attachment.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+#include <hyprutils/memory/SharedPtr.hpp>
+
+namespace Aquamarine {
+    enum eAttachmentType {
+        AQ_ATTACHMENT_DRM_BUFFER = 0,
+        AQ_ATTACHMENT_DRM_KMS_UNIMPORTABLE,
+    };
+
+    class IAttachment {
+      public:
+        virtual ~IAttachment() {
+            ;
+        }
+
+        virtual eAttachmentType type() = 0;
+    };
+
+    class CAttachmentManager {
+      public:
+        bool                                           has(eAttachmentType type);
+        Hyprutils::Memory::CSharedPointer<IAttachment> get(eAttachmentType type);
+        void                                           add(Hyprutils::Memory::CSharedPointer<IAttachment> attachment);
+        void                                           remove(Hyprutils::Memory::CSharedPointer<IAttachment> attachment);
+        void                                           removeByType(eAttachmentType type);
+
+      private:
+        std::vector<Hyprutils::Memory::CSharedPointer<IAttachment>> attachments;
+    };
+};
diff --git a/include/aquamarine/output/Output.hpp b/include/aquamarine/output/Output.hpp
index e2a4b20..73fe4a3 100644
--- a/include/aquamarine/output/Output.hpp
+++ b/include/aquamarine/output/Output.hpp
@@ -6,6 +6,7 @@
 #include <hyprutils/memory/SharedPtr.hpp>
 #include <hyprutils/math/Region.hpp>
 #include <drm_fourcc.h>
+#include <xf86drmMode.h>
 #include "../allocator/Swapchain.hpp"
 #include "../buffer/Buffer.hpp"
 
@@ -14,9 +15,10 @@ namespace Aquamarine {
     class IBackendImplementation;
 
     struct SOutputMode {
-        Hyprutils::Math::Vector2D pixelSize;
-        unsigned int              refreshRate = 0 /* in mHz */;
-        bool                      preferred   = false;
+        Hyprutils::Math::Vector2D      pixelSize;
+        unsigned int                   refreshRate = 0 /* in mHz */;
+        bool                           preferred   = false;
+        std::optional<drmModeModeInfo> modeInfo; // if this is a drm mode, this will be populated.
     };
 
     enum eOutputPresentationMode {
@@ -83,6 +85,7 @@ namespace Aquamarine {
 
         friend class IOutput;
         friend class CWaylandOutput;
+        friend class CDRMOutput;
     };
 
     class IOutput {
@@ -106,6 +109,8 @@ namespace Aquamarine {
         bool                                                              enabled    = false;
         bool                                                              nonDesktop = false;
         eSubpixelMode                                                     subpixel   = AQ_SUBPIXEL_NONE;
+        bool                                                              vrrCapable = false;
+        bool                                                              needsFrame = false;
 
         //
         std::vector<Hyprutils::Memory::CSharedPointer<SOutputMode>> modes;
@@ -113,10 +118,25 @@ namespace Aquamarine {
         Hyprutils::Memory::CSharedPointer<CSwapchain>               swapchain;
 
         //
+
+        enum eOutputPresentFlags : uint32_t {
+            AQ_OUTPUT_PRESENT_VSYNC         = (1 << 0),
+            AQ_OUTPUT_PRESENT_HW_CLOCK      = (1 << 1),
+            AQ_OUTPUT_PRESENT_HW_COMPLETION = (1 << 2),
+            AQ_OUTPUT_PRESENT_ZEROCOPY      = (1 << 3),
+        };
         struct SStateEvent {
             Hyprutils::Math::Vector2D size;
         };
 
+        struct SPresentEvent {
+            bool         presented = true;
+            timespec*    when      = nullptr;
+            unsigned int seq       = 0;
+            int          refresh   = 0;
+            uint32_t     flags     = 0;
+        };
+
         struct {
             Hyprutils::Signal::CSignal destroy;
             Hyprutils::Signal::CSignal frame;
diff --git a/src/allocator/GBM.cpp b/src/allocator/GBM.cpp
index 40d1609..13f7d98 100644
--- a/src/allocator/GBM.cpp
+++ b/src/allocator/GBM.cpp
@@ -15,10 +15,38 @@ Aquamarine::CGBMBuffer::CGBMBuffer(const SAllocatorBufferParams& params, Hypruti
     attrs.size   = params.size;
     attrs.format = params.format;
 
-    // FIXME: proper modifier support? This might implode on some GPUs on the Wayland backend
-    // for sure.
+    const auto            FORMATS = allocator->backend->getPrimaryRenderFormats();
 
-    bo = gbm_bo_create(allocator->gbmDevice, params.size.x, params.size.y, params.format, GBM_BO_USE_RENDERING);
+    std::vector<uint64_t> explicitModifiers;
+
+    // check if we can use modifiers. If the requested support has any explicit modifier
+    // supported by the primary backend, we can.
+    allocator->backend->log(AQ_LOG_TRACE, std::format("GBM: Searching for modifiers. Format len: {}", FORMATS.size()));
+    for (auto& f : FORMATS) {
+        if (f.drmFormat != params.format)
+            continue;
+
+        allocator->backend->log(AQ_LOG_TRACE, "GBM: Format matched");
+
+        for (auto& m : f.modifiers) {
+            if (m == DRM_FORMAT_MOD_LINEAR || m == DRM_FORMAT_MOD_INVALID)
+                continue;
+
+            explicitModifiers.push_back(m);
+
+            allocator->backend->log(AQ_LOG_TRACE, "GBM: Modifier matched");
+        }
+    }
+
+    uint32_t flags = GBM_BO_USE_RENDERING;
+    if (params.scanout)
+        flags |= GBM_BO_USE_SCANOUT;
+
+    if (explicitModifiers.empty()) {
+        allocator->backend->log(AQ_LOG_WARNING, "GBM: Using modifier-less allocation");
+        bo = gbm_bo_create(allocator->gbmDevice, params.size.x, params.size.y, params.format, flags);
+    } else
+        bo = gbm_bo_create_with_modifiers2(allocator->gbmDevice, params.size.x, params.size.y, params.format, explicitModifiers.data(), explicitModifiers.size(), flags);
 
     if (!bo) {
         allocator->backend->log(AQ_LOG_ERROR, "GBM: Failed to allocate a GBM buffer: bo null");
diff --git a/src/allocator/Swapchain.cpp b/src/allocator/Swapchain.cpp
index ff76bd5..fc486ed 100644
--- a/src/allocator/Swapchain.cpp
+++ b/src/allocator/Swapchain.cpp
@@ -4,6 +4,7 @@
 
 using namespace Aquamarine;
 using namespace Hyprutils::Memory;
+using namespace Hyprutils::Math;
 #define SP CSharedPointer
 
 Aquamarine::CSwapchain::CSwapchain(SP<IAllocator> allocator_) : allocator(allocator_) {
@@ -15,6 +16,14 @@ bool Aquamarine::CSwapchain::reconfigure(const SSwapchainOptions& options_) {
     if (!allocator)
         return false;
 
+    if (options_.size == Vector2D{} || options_.length == 0) {
+        // clear the swapchain
+        allocator->getBackend()->log(AQ_LOG_DEBUG, "Swapchain: Clearing");
+        buffers.clear();
+        options = options_;
+        return true;
+    }
+
     if (options_.format == options.format && options_.size == options.size && options_.length == options.length)
         return true; // no need to reconfigure
 
diff --git a/src/backend/Backend.cpp b/src/backend/Backend.cpp
index 38ed42b..0a3d9a2 100644
--- a/src/backend/Backend.cpp
+++ b/src/backend/Backend.cpp
@@ -99,7 +99,12 @@ bool Aquamarine::CBackend::start() {
     }
 
     // erase failed impls
-    std::erase_if(implementations, [](const auto& i) { return i->pollFD() < 0; });
+    std::erase_if(implementations, [this](const auto& i) {
+        bool failed = i->pollFD() < 0;
+        if (failed)
+            log(AQ_LOG_ERROR, std::format("Implementation {} failed, erasing.", backendTypeToName(i->type())));
+        return failed;
+    });
 
     // TODO: obviously change this when (if) we add different allocators.
     for (auto& b : implementations) {
@@ -225,6 +230,20 @@ void Aquamarine::CBackend::dispatchEventsAsync() {
 }
 
 bool Aquamarine::CBackend::hasSession() {
-    // TODO:
-    return false;
+    return session;
+}
+
+std::vector<SDRMFormat> Aquamarine::CBackend::getPrimaryRenderFormats() {
+    for (auto& b : implementations) {
+        if (b->type() != AQ_BACKEND_DRM && b->type() != AQ_BACKEND_WAYLAND)
+            continue;
+
+        return b->getRenderFormats();
+    }
+
+    for (auto& b : implementations) {
+        return b->getRenderFormats();
+    }
+
+    return {};
 }
diff --git a/src/backend/drm/DRM.cpp b/src/backend/drm/DRM.cpp
index 841975e..888ab6a 100644
--- a/src/backend/drm/DRM.cpp
+++ b/src/backend/drm/DRM.cpp
@@ -1,17 +1,21 @@
 #include <aquamarine/backend/DRM.hpp>
+#include <aquamarine/backend/drm/Legacy.hpp>
 #include <chrono>
 #include <thread>
 #include <deque>
 #include <cstring>
+#include <sys/mman.h>
 
 extern "C" {
 #include <libseat.h>
 #include <libudev.h>
 #include <xf86drm.h>
 #include <xf86drmMode.h>
+#include <libdisplay-info/cvt.h>
 }
 
 #include "Props.hpp"
+#include "FormatUtils.hpp"
 
 using namespace Aquamarine;
 using namespace Hyprutils::Memory;
@@ -194,6 +198,14 @@ Aquamarine::CDRMBackend::~CDRMBackend() {
     ;
 }
 
+void Aquamarine::CDRMBackend::log(eBackendLogLevel l, const std::string& s) {
+    backend->log(l, s);
+}
+
+bool Aquamarine::CDRMBackend::sessionActive() {
+    return backend->session->active;
+}
+
 bool Aquamarine::CDRMBackend::checkFeatures() {
     uint64_t curW = 0, curH = 0;
     if (drmGetCap(gpu->fd, DRM_CAP_CURSOR_WIDTH, &curW))
@@ -227,6 +239,11 @@ bool Aquamarine::CDRMBackend::checkFeatures() {
     drmProps.supportsAsyncCommit     = drmGetCap(gpu->fd, DRM_CAP_ASYNC_PAGE_FLIP, &cap) == 0 && cap == 1;
     drmProps.supportsAddFb2Modifiers = drmGetCap(gpu->fd, DRM_CAP_ADDFB2_MODIFIERS, &cap) == 0 && cap == 1;
 
+    backend->log(AQ_LOG_DEBUG, std::format("drm: drmProps.supportsAsyncCommit: {}", drmProps.supportsAsyncCommit));
+    backend->log(AQ_LOG_DEBUG, std::format("drm: drmProps.supportsAddFb2Modifiers: {}", drmProps.supportsAddFb2Modifiers));
+
+    impl = makeShared<CDRMLegacyImpl>(self.lock());
+
     // TODO: allow no-modifiers?
 
     return true;
@@ -303,11 +320,14 @@ bool Aquamarine::CDRMBackend::initResources() {
             return false;
         }
 
+        planes.emplace_back(aqPlane);
+
         drmModeFreePlane(plane);
     }
 
     drmModeFreePlaneResources(planeResources);
     drmModeFreeResources(resources);
+
     return true;
 }
 
@@ -372,7 +392,9 @@ void Aquamarine::CDRMBackend::scanConnectors() {
         } else
             conn = *it;
 
-        backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connection state:", (int)drmConn->connection));
+        backend->log(AQ_LOG_DEBUG, std::format("drm: Connectors size {}", connectors.size()));
+
+        backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connection state: {}", connectorID, (int)drmConn->connection));
 
         if (conn->status == DRM_MODE_DISCONNECTED && drmConn->connection == DRM_MODE_CONNECTED) {
             backend->log(AQ_LOG_DEBUG, std::format("drm: Connector {} connected", conn->szName));
@@ -389,8 +411,6 @@ void Aquamarine::CDRMBackend::scanConnectors() {
 }
 
 bool Aquamarine::CDRMBackend::start() {
-    scanConnectors();
-
     return true;
 }
 
@@ -403,7 +423,38 @@ int Aquamarine::CDRMBackend::drmFD() {
 }
 
 static void handlePF(int fd, unsigned seq, unsigned tv_sec, unsigned tv_usec, unsigned crtc_id, void* data) {
-    // FIXME:
+    auto pageFlip = (SDRMPageFlip*)data;
+
+    if (!pageFlip->connector)
+        return;
+
+    pageFlip->connector->isPageFlipPending = false;
+
+    const auto& BACKEND = pageFlip->connector->backend;
+
+    BACKEND->log(AQ_LOG_TRACE, std::format("drm: pf event seq {} sec {} usec {} crtc {}", seq, tv_sec, tv_usec, crtc_id));
+
+    if (pageFlip->connector->status != DRM_MODE_CONNECTED || !pageFlip->connector->crtc) {
+        BACKEND->log(AQ_LOG_DEBUG, "drm: Ignoring a pf event from a disabled crtc / connector");
+        return;
+    }
+
+    pageFlip->connector->onPresent();
+
+    uint32_t flags = IOutput::AQ_OUTPUT_PRESENT_VSYNC | IOutput::AQ_OUTPUT_PRESENT_HW_CLOCK | IOutput::AQ_OUTPUT_PRESENT_HW_COMPLETION | IOutput::AQ_OUTPUT_PRESENT_ZEROCOPY;
+
+    timespec presented = {.tv_sec = tv_sec, .tv_nsec = tv_usec * 1000};
+
+    pageFlip->connector->output->events.present.emit(IOutput::SPresentEvent{
+        .presented = BACKEND->sessionActive(),
+        .when      = &presented,
+        .seq       = seq,
+        .refresh   = (int)(pageFlip->connector->refresh ? (1000000000000LL / pageFlip->connector->refresh) : 0),
+        .flags     = flags,
+    });
+
+    if (BACKEND->sessionActive())
+        pageFlip->connector->output->events.frame.emit();
 }
 
 bool Aquamarine::CDRMBackend::dispatchEvents() {
@@ -415,6 +466,13 @@ bool Aquamarine::CDRMBackend::dispatchEvents() {
     if (drmHandleEvent(gpu->fd, &event) != 0)
         backend->log(AQ_LOG_ERROR, std::format("drm: Failed to handle event on fd {}", gpu->fd));
 
+    if (!idleCallbacks.empty()) {
+        for (auto& c : idleCallbacks) {
+            c();
+        }
+        idleCallbacks.clear();
+    }
+
     return true;
 }
 
@@ -427,7 +485,22 @@ bool Aquamarine::CDRMBackend::setCursor(SP<IBuffer> buffer, const Hyprutils::Mat
 }
 
 void Aquamarine::CDRMBackend::onReady() {
-    ;
+    backend->log(AQ_LOG_DEBUG, std::format("drm: Connectors size2 {}", connectors.size()));
+
+    for (auto& c : connectors) {
+        backend->log(AQ_LOG_DEBUG, std::format("drm: onReady: connector {}", c->id));
+        if (!c->output)
+            continue;
+
+        backend->log(AQ_LOG_DEBUG, std::format("drm: onReady: connector {} has output name {}", c->id, c->output->name));
+
+        // swapchain has to be created here because allocator is absent in connect if not ready
+        c->output->swapchain = makeShared<CSwapchain>(backend->allocator);
+        c->output->swapchain->reconfigure(SSwapchainOptions{.length = 0, .scanout = true}); // mark the swapchain for scanout
+        c->output->needsFrame = true;
+
+        backend->events.newOutput.emit(SP<IOutput>(c->output));
+    }
 }
 
 std::vector<SDRMFormat> Aquamarine::CDRMBackend::getRenderFormats() {
@@ -463,26 +536,40 @@ bool Aquamarine::SDRMPlane::init(drmModePlane* plane) {
 
     initialID = id;
 
+    backend->backend->log(AQ_LOG_DEBUG, std::format("drm: Plane {} has type {}", id, (int)type));
+
+    backend->backend->log(AQ_LOG_DEBUG, std::format("drm: Plane {} has {} formats", id, plane->count_formats));
+
     for (size_t i = 0; i < plane->count_formats; ++i) {
         if (type != DRM_PLANE_TYPE_CURSOR)
             formats.emplace_back(SDRMFormat{.drmFormat = plane->formats[i], .modifiers = {DRM_FORMAT_MOD_LINEAR, DRM_FORMAT_MOD_INVALID}});
         else
             formats.emplace_back(SDRMFormat{.drmFormat = plane->formats[i], .modifiers = {DRM_FORMAT_MOD_LINEAR}});
+
+        backend->backend->log(AQ_LOG_TRACE, std::format("drm: | Format {}", fourccToName(plane->formats[i])));
     }
 
     if (props.in_formats && backend->drmProps.supportsAddFb2Modifiers) {
+        backend->backend->log(AQ_LOG_DEBUG, "drm: Plane: checking for modifiers");
+
         uint64_t blobID = 0;
-        if (!getDRMProp(backend->gpu->fd, id, props.in_formats, &blobID))
+        if (!getDRMProp(backend->gpu->fd, id, props.in_formats, &blobID)) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: Plane: No blob id");
             return false;
+        }
 
         auto blob = drmModeGetPropertyBlob(backend->gpu->fd, blobID);
-        if (!blob)
+        if (!blob) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: Plane: No property");
             return false;
+        }
 
         drmModeFormatModifierIterator iter = {0};
         while (drmModeFormatModifierBlobIterNext(blob, &iter)) {
             auto it = std::find_if(formats.begin(), formats.end(), [iter](const auto& e) { return e.drmFormat == iter.fmt; });
 
+            backend->backend->log(AQ_LOG_TRACE, std::format("drm: | Modifier {} with format {}", iter.mod, fourccToName(iter.fmt)));
+
             if (it == formats.end())
                 formats.emplace_back(SDRMFormat{.drmFormat = iter.fmt, .modifiers = {iter.mod}});
             else
@@ -543,7 +630,8 @@ SP<SDRMCRTC> Aquamarine::SDRMConnector::getCurrentCRTC(const drmModeConnector* c
 }
 
 bool Aquamarine::SDRMConnector::init(drmModeConnector* connector) {
-    id = connector->connector_id;
+    id                        = connector->connector_id;
+    pendingPageFlip.connector = self.lock();
 
     if (!getDRMConnectorProps(backend->gpu->fd, id, &props))
         return false;
@@ -640,10 +728,14 @@ void Aquamarine::SDRMConnector::connect(drmModeConnector* connector) {
             continue;
         }
 
+        if (i == 1)
+            fallbackModeInfo = drmMode;
+
         auto aqMode         = makeShared<SOutputMode>();
         aqMode->pixelSize   = {drmMode.hdisplay, drmMode.vdisplay};
         aqMode->refreshRate = calculateRefresh(drmMode);
         aqMode->preferred   = (drmMode.type & DRM_MODE_TYPE_PREFERRED);
+        aqMode->modeInfo    = drmMode;
 
         output->modes.emplace_back(aqMode);
 
@@ -682,6 +774,9 @@ void Aquamarine::SDRMConnector::connect(drmModeConnector* connector) {
         output->nonDesktop = prop;
     }
 
+    canDoVrr           = props.vrr_capable && crtc->props.vrr_enabled && !getDRMProp(backend->gpu->fd, id, props.vrr_capable, &prop) && prop;
+    output->vrrCapable = canDoVrr;
+
     maxBpcBounds.fill(0);
 
     if (props.max_bpc && !introspectDRMPropRange(backend->gpu->fd, props.max_bpc, maxBpcBounds.data(), &maxBpcBounds[1]))
@@ -702,12 +797,18 @@ void Aquamarine::SDRMConnector::connect(drmModeConnector* connector) {
     output->model       = model;
     output->serial      = serial;
     output->description = std::format("{} {} {} ({})", make, model, serial, szName);
+    output->needsFrame  = true;
 
     backend->backend->log(AQ_LOG_DEBUG, std::format("drm: Description {}", output->description));
 
     status = DRM_MODE_CONNECTED;
 
+    if (!backend->backend->ready)
+        return;
+
+    output->swapchain = makeShared<CSwapchain>(backend->backend->allocator);
     backend->backend->events.newOutput.emit(output);
+    output->scheduleFrame();
 }
 
 void Aquamarine::SDRMConnector::disconnect() {
@@ -722,16 +823,162 @@ void Aquamarine::SDRMConnector::disconnect() {
     status = DRM_MODE_DISCONNECTED;
 }
 
+bool Aquamarine::SDRMConnector::commitState(const SDRMConnectorCommitData& data) {
+    const bool ok = backend->impl->commit(self.lock(), data);
+
+    if (ok && !data.test)
+        applyCommit(data);
+    else
+        rollbackCommit(data);
+
+    return ok;
+}
+
+void Aquamarine::SDRMConnector::applyCommit(const SDRMConnectorCommitData& data) {
+    crtc->primary->back  = crtc->primary->front;
+    crtc->primary->front = data.mainFB;
+    if (crtc->cursor) {
+        crtc->cursor->back  = crtc->cursor->front;
+        crtc->cursor->front = data.cursorFB;
+    }
+
+    pendingCursorFB.reset();
+
+    if (output->state->state().committed & COutputState::AQ_OUTPUT_STATE_MODE)
+        refresh = calculateRefresh(data.modeInfo);
+}
+
+void Aquamarine::SDRMConnector::rollbackCommit(const SDRMConnectorCommitData& data) {
+    ;
+}
+
+void Aquamarine::SDRMConnector::onPresent() {
+    ;
+}
+
 Aquamarine::CDRMOutput::~CDRMOutput() {
     ;
 }
 
 bool Aquamarine::CDRMOutput::commit() {
-    return true;
+    return commitState();
 }
 
 bool Aquamarine::CDRMOutput::test() {
-    return true;
+    return commitState(true);
+}
+
+bool Aquamarine::CDRMOutput::commitState(bool onlyTest) {
+    if (!backend->backend->session->active) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: Session inactive");
+        return false;
+    }
+
+    if (!connector->crtc) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: No CRTC attached to output");
+        return false;
+    }
+
+    const auto&    STATE     = state->state();
+    const uint32_t COMMITTED = STATE.committed;
+
+    if ((COMMITTED & COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_ENABLED) && STATE.enabled) {
+        if (!STATE.mode && STATE.customMode) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: No mode on enable commit");
+            return false;
+        }
+    }
+
+    if (STATE.adaptiveSync && !connector->canDoVrr) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: No Adaptive sync support for output");
+        return false;
+    }
+
+    if (STATE.presentationMode == AQ_OUTPUT_PRESENTATION_IMMEDIATE && !backend->drmProps.supportsAsyncCommit) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: No Immediate presentation support in the backend");
+        return false;
+    }
+
+    if (COMMITTED & COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_BUFFER && !STATE.buffer) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: No buffer committed");
+        return false;
+    }
+
+    // If we are changing the rendering format, we may need to reconfigure the output (aka modeset)
+    // which may result in some glitches
+    const bool NEEDS_RECONFIG = COMMITTED &
+        (COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_ENABLED | COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_FORMAT |
+         COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_MODE);
+
+    const bool BLOCKING = NEEDS_RECONFIG || !(COMMITTED & COutputState::eOutputStateProperties::AQ_OUTPUT_STATE_BUFFER);
+
+    const auto MODE = STATE.mode ? STATE.mode : STATE.customMode;
+
+    uint32_t   flags = 0;
+
+    if (!onlyTest) {
+        if (NEEDS_RECONFIG) {
+            if (STATE.enabled)
+                backend->backend->log(AQ_LOG_DEBUG,
+                                      std::format("drm: Modesetting {} with {}x{}@{:.2f}Hz", name, (int)MODE->pixelSize.x, (int)MODE->pixelSize.y, MODE->refreshRate / 1000.F));
+            else
+                backend->backend->log(AQ_LOG_DEBUG, std::format("drm: Disabling output {}", name));
+        }
+
+        if (!BLOCKING && connector->isPageFlipPending) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: Cannot commit when a page-flip is awaiting");
+            return false;
+        }
+
+        if (STATE.enabled)
+            flags |= DRM_MODE_PAGE_FLIP_EVENT;
+        if (STATE.presentationMode == AQ_OUTPUT_PRESENTATION_IMMEDIATE)
+            flags |= DRM_MODE_PAGE_FLIP_ASYNC;
+    }
+
+    SDRMConnectorCommitData data;
+
+    if (STATE.buffer) {
+        backend->backend->log(AQ_LOG_TRACE, "drm: Committed a buffer, updating state");
+
+        SP<CDRMFB> drmFB;
+        auto       buf = STATE.buffer;
+        // try to find the buffer in its layer
+        if (connector->crtc->primary->back && connector->crtc->primary->back->buffer == buf) {
+            backend->backend->log(AQ_LOG_TRACE, "drm: CRTC's back buffer matches committed :D");
+            drmFB = connector->crtc->primary->back;
+        } else if (connector->crtc->primary->front && connector->crtc->primary->front->buffer == buf) {
+            backend->backend->log(AQ_LOG_TRACE, "drm: CRTC's front buffer matches committed");
+            drmFB = connector->crtc->primary->front;
+        }
+
+        if (!drmFB)
+            drmFB = CDRMFB::create(buf, backend);
+
+        if (!drmFB) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: Buffer failed to import to KMS");
+            return false;
+        }
+
+        data.mainFB = drmFB;
+    }
+
+    data.blocking = BLOCKING;
+    data.modeset  = NEEDS_RECONFIG;
+    data.flags    = flags;
+    data.test     = onlyTest;
+    if (MODE->modeInfo.has_value())
+        data.modeInfo = *MODE->modeInfo;
+    else
+        data.calculateMode(connector);
+
+    bool ok = connector->commitState(data);
+
+    events.commit.emit();
+
+    state->onCommit();
+
+    return ok;
 }
 
 SP<IBackendImplementation> Aquamarine::CDRMOutput::getBackend() {
@@ -747,14 +994,175 @@ void Aquamarine::CDRMOutput::moveCursor(const Vector2D& coord) {
 }
 
 void Aquamarine::CDRMOutput::scheduleFrame() {
-    ;
+    if (connector->isPageFlipPending)
+        return;
+
+    backend->idleCallbacks.emplace_back([this]() { events.frame.emit(); });
 }
 
 Vector2D Aquamarine::CDRMOutput::maxCursorSize() {
     return backend->drmProps.cursorSize;
 }
 
-Aquamarine::CDRMOutput::CDRMOutput(const std::string& name_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_, Hyprutils::Memory::CSharedPointer<SDRMConnector> connector_) :
+Aquamarine::CDRMOutput::CDRMOutput(const std::string& name_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_, SP<SDRMConnector> connector_) :
     backend(backend_), connector(connector_) {
     name = name_;
 }
+
+SP<CDRMFB> Aquamarine::CDRMFB::create(SP<IBuffer> buffer_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_) {
+    auto fb = SP<CDRMFB>(new CDRMFB(buffer_, backend_));
+
+    if (!fb->id)
+        return nullptr;
+
+    return fb;
+}
+
+Aquamarine::CDRMFB::CDRMFB(SP<IBuffer> buffer_, Hyprutils::Memory::CWeakPointer<CDRMBackend> backend_) : buffer(buffer_), backend(backend_) {
+    auto attrs = buffer->dmabuf();
+    if (!attrs.success) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: Buffer submitted has no dmabuf");
+        return;
+    }
+
+    if (buffer->attachments.has(AQ_ATTACHMENT_DRM_KMS_UNIMPORTABLE)) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: Buffer submitted is unimportable");
+        return;
+    }
+
+    // TODO: check format
+
+    for (int i = 0; i < attrs.planes; ++i) {
+        int ret = drmPrimeFDToHandle(backend->gpu->fd, attrs.fds.at(i), &boHandles.at(i));
+        if (ret) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: drmPrimeFDToHandle failed");
+            drop();
+            return;
+        }
+
+        backend->backend->log(AQ_LOG_TRACE, std::format("drm: CDRMFB: plane {} has fd {}, got handle {}", i, attrs.fds.at(i), boHandles.at(i)));
+    }
+
+    id = submitBuffer();
+    if (!id) {
+        backend->backend->log(AQ_LOG_ERROR, "drm: Failed to submit a buffer to KMS");
+        buffer->attachments.add(makeShared<CDRMBufferUnimportable>());
+        drop();
+        return;
+    }
+
+    backend->backend->log(AQ_LOG_TRACE, std::format("drm: new buffer {}", id));
+
+    // FIXME: wlroots does this, I am unsure why, but if I do, the gpu driver will kill us.
+    // closeHandles();
+}
+
+Aquamarine::CDRMFB::~CDRMFB() {
+    drop();
+}
+
+void Aquamarine::CDRMFB::closeHandles() {
+    if (handlesClosed)
+        return;
+
+    handlesClosed = true;
+
+    for (auto& h : boHandles) {
+        if (h == 0)
+            continue;
+
+        if (drmCloseBufferHandle(backend->gpu->fd, h))
+            backend->backend->log(AQ_LOG_ERROR, "drm: drmCloseBufferHandle failed");
+        h = 0;
+    }
+}
+
+void Aquamarine::CDRMFB::drop() {
+    if (dropped)
+        return;
+
+    dropped = true;
+
+    if (!id)
+        return;
+
+    backend->backend->log(AQ_LOG_TRACE, std::format("drm: dropping buffer {}", id));
+
+    int ret = drmModeCloseFB(backend->gpu->fd, id);
+    if (ret == -EINVAL)
+        ret = drmModeRmFB(backend->gpu->fd, id);
+
+    if (ret)
+        backend->backend->log(AQ_LOG_ERROR, std::format("drm: Failed to close a buffer: {}", strerror(-ret)));
+}
+
+uint32_t Aquamarine::CDRMFB::submitBuffer() {
+    auto                    attrs = buffer->dmabuf();
+    uint32_t                newID = 0;
+    std::array<uint64_t, 4> mods  = {0};
+    for (size_t i = 0; i < attrs.planes; ++i) {
+        mods.at(i) = attrs.modifier;
+    }
+
+    if (backend->drmProps.supportsAddFb2Modifiers && attrs.modifier != DRM_FORMAT_MOD_INVALID) {
+        backend->backend->log(AQ_LOG_TRACE,
+                              std::format("drm: Using drmModeAddFB2WithModifiers to import buffer into KMS: Size {} with format {} and mod {}", attrs.size,
+                                          fourccToName(attrs.format), attrs.modifier));
+        if (drmModeAddFB2WithModifiers(backend->gpu->fd, attrs.size.x, attrs.size.y, attrs.format, boHandles.data(), attrs.strides.data(), attrs.offsets.data(), mods.data(),
+                                       &newID, DRM_MODE_FB_MODIFIERS)) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: Failed to submit a buffer with AddFB2");
+            return 0;
+        }
+    } else {
+        if (attrs.modifier != DRM_FORMAT_MOD_INVALID && attrs.modifier != DRM_FORMAT_MOD_LINEAR) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: drmModeAddFB2WithModifiers unsupported and buffer has explicit modifiers");
+            return 0;
+        }
+
+        backend->backend->log(
+            AQ_LOG_TRACE,
+            std::format("drm: Using drmModeAddFB2 to import buffer into KMS: Size {} with format {} and mod {}", attrs.size, fourccToName(attrs.format), attrs.modifier));
+
+        if (drmModeAddFB2(backend->gpu->fd, attrs.size.x, attrs.size.y, attrs.format, boHandles.data(), attrs.strides.data(), attrs.offsets.data(), &newID, 0)) {
+            backend->backend->log(AQ_LOG_ERROR, "drm: drmModeAddFB2 failed");
+            return 0;
+        }
+    }
+
+    return newID;
+}
+
+void Aquamarine::SDRMConnectorCommitData::calculateMode(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector) {
+    const auto&    STATE = connector->output->state->state();
+    const auto     MODE  = STATE.mode ? STATE.mode : STATE.customMode;
+
+    di_cvt_options options = {
+        .red_blank_ver = DI_CVT_REDUCED_BLANKING_NONE,
+        .h_pixels      = (int)MODE->pixelSize.x,
+        .v_lines       = (int)MODE->pixelSize.y,
+        .ip_freq_rqd   = MODE->refreshRate ? MODE->refreshRate / 1000.0 : 60.0,
+    };
+    di_cvt_timing timing;
+
+    di_cvt_compute(&timing, &options);
+
+    uint16_t hsync_start = (int)MODE->pixelSize.y + timing.h_front_porch;
+    uint16_t vsync_start = timing.v_lines_rnd + timing.v_front_porch;
+    uint16_t hsync_end   = hsync_start + timing.h_sync;
+    uint16_t vsync_end   = vsync_start + timing.v_sync;
+
+    modeInfo = (drmModeModeInfo){
+        .clock       = (uint32_t)std::round(timing.act_pixel_freq * 1000),
+        .hdisplay    = (uint16_t)MODE->pixelSize.y,
+        .hsync_start = hsync_start,
+        .hsync_end   = hsync_end,
+        .htotal      = (uint16_t)(hsync_end + timing.h_back_porch),
+        .vdisplay    = (uint16_t)timing.v_lines_rnd,
+        .vsync_start = vsync_start,
+        .vsync_end   = vsync_end,
+        .vtotal      = (uint16_t)(vsync_end + timing.v_back_porch),
+        .vrefresh    = (uint32_t)std::round(timing.act_frame_rate),
+        .flags       = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
+    };
+    snprintf(modeInfo.name, sizeof(modeInfo.name), "%dx%d", (int)MODE->pixelSize.x, (int)MODE->pixelSize.y);
+}
diff --git a/src/backend/drm/impl/Legacy.cpp b/src/backend/drm/impl/Legacy.cpp
new file mode 100644
index 0000000..389cfa5
--- /dev/null
+++ b/src/backend/drm/impl/Legacy.cpp
@@ -0,0 +1,88 @@
+#include <aquamarine/backend/drm/Legacy.hpp>
+#include <cstring>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <sys/mman.h>
+
+using namespace Aquamarine;
+using namespace Hyprutils::Memory;
+using namespace Hyprutils::Math;
+#define SP CSharedPointer
+
+Aquamarine::CDRMLegacyImpl::CDRMLegacyImpl(Hyprutils::Memory::CSharedPointer<CDRMBackend> backend_) : backend(backend_) {
+    ;
+}
+
+bool Aquamarine::CDRMLegacyImpl::commitInternal(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data) {
+    const auto& STATE = connector->output->state->state();
+    SP<CDRMFB>  mainFB;
+    bool        enable = STATE.enabled;
+
+    if (enable) {
+        if (!data.mainFB)
+            connector->backend->backend->log(AQ_LOG_WARNING, "legacy drm: No buffer, will fall back to only modeset (if present)");
+        else
+            mainFB = data.mainFB;
+    }
+
+    if (data.modeset) {
+        connector->backend->backend->log(AQ_LOG_DEBUG, std::format("legacy drm: Modesetting CRTC {}", connector->crtc->id));
+
+        uint32_t dpms = enable ? DRM_MODE_DPMS_ON : DRM_MODE_DPMS_OFF;
+        if (drmModeConnectorSetProperty(connector->backend->gpu->fd, connector->id, connector->props.dpms, dpms)) {
+            connector->backend->backend->log(AQ_LOG_ERROR, "legacy drm: Failed to set dpms");
+            return false;
+        }
+
+        std::vector<uint32_t> connectors;
+        drmModeModeInfo*      mode = nullptr;
+        if (enable) {
+            connectors.push_back(connector->id);
+            mode = (drmModeModeInfo*)&data.modeInfo;
+        }
+
+        connector->backend->backend->log(AQ_LOG_DEBUG, std::format("legacy drm: Modesetting CRTC, connectors: {}", connectors.size()));
+        connector->backend->backend->log(
+            AQ_LOG_DEBUG,
+            std::format("legacy drm: Modesetting CRTC, mode: clock {} hdisplay {} vdisplay {} vrefresh {}", mode->clock, mode->hdisplay, mode->vdisplay, mode->vrefresh));
+
+        if (auto ret = drmModeSetCrtc(connector->backend->gpu->fd, connector->crtc->id, mainFB ? mainFB->id : -1, 0, 0, connectors.data(), connectors.size(), mode); ret) {
+            connector->backend->backend->log(AQ_LOG_ERROR, std::format("legacy drm: drmModeSetCrtc failed: {}", strerror(-ret)));
+            return false;
+        }
+    }
+
+    // TODO: gamma
+
+    // TODO: Adaptive sync
+
+    // TODO: cursor plane
+    if (drmModeSetCursor(connector->backend->gpu->fd, connector->crtc->id, 0, 0, 0))
+        connector->backend->backend->log(AQ_LOG_ERROR, "legacy drm: cursor null failed");
+
+    if (!enable)
+        return true;
+
+    if (!(data.flags & DRM_MODE_PAGE_FLIP_EVENT))
+        return true;
+
+    if (int ret = drmModePageFlip(connector->backend->gpu->fd, connector->crtc->id, mainFB ? mainFB->id : -1, data.flags, &connector->pendingPageFlip); ret) {
+        connector->backend->backend->log(AQ_LOG_ERROR, std::format("legacy drm: drmModePageFlip failed: {}", strerror(-ret)));
+        return false;
+    }
+
+    connector->isPageFlipPending = true;
+
+    return true;
+}
+
+bool Aquamarine::CDRMLegacyImpl::testInternal(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data) {
+    return true; // TODO: lol
+}
+
+bool Aquamarine::CDRMLegacyImpl::commit(Hyprutils::Memory::CSharedPointer<SDRMConnector> connector, const SDRMConnectorCommitData& data) {
+    if (!testInternal(connector, data))
+        return false;
+
+    return commitInternal(connector, data);
+}
\ No newline at end of file
diff --git a/src/misc/Attachment.cpp b/src/misc/Attachment.cpp
new file mode 100644
index 0000000..16a251f
--- /dev/null
+++ b/src/misc/Attachment.cpp
@@ -0,0 +1,33 @@
+#include <aquamarine/misc/Attachment.hpp>
+
+using namespace Aquamarine;
+using namespace Hyprutils::Memory;
+#define SP CSharedPointer
+
+bool Aquamarine::CAttachmentManager::has(eAttachmentType type) {
+    for (auto& a : attachments) {
+        if (a->type() == type)
+            return true;
+    }
+    return false;
+}
+
+SP<IAttachment> Aquamarine::CAttachmentManager::get(eAttachmentType type) {
+    for (auto& a : attachments) {
+        if (a->type() == type)
+            return a;
+    }
+    return nullptr;
+}
+
+void Aquamarine::CAttachmentManager::add(SP<IAttachment> attachment) {
+    attachments.emplace_back(attachment);
+}
+
+void Aquamarine::CAttachmentManager::remove(SP<IAttachment> attachment) {
+    std::erase(attachments, attachment);
+}
+
+void Aquamarine::CAttachmentManager::removeByType(eAttachmentType type) {
+    std::erase_if(attachments, [type](const auto& e) { return e->type() == type; });
+}