File indexing completed on 2024-05-12 05:30:27

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2022 Xaver Hugl <xaver.hugl@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "mock_drm.h"
 
 #include <errno.h>
 extern "C" {
 #include <libxcvt/libxcvt.h>
 }
 #include <math.h>
 
 #include <memory>
 
 #include <QMap>
 #include <QDebug>
 
 // Mock impls
 
 static QMap<int, MockGpu*> s_gpus;
 
 static MockGpu *getGpu(int fd)
 {
     return s_gpus[fd];
 }
 
 MockGpu::MockGpu(int fd, const QString &devNode, int numCrtcs, int gammaSize)
     : fd(fd)
     , devNode(devNode)
 {
     s_gpus.insert(fd, this);
     for (int i = 0; i < numCrtcs; i++) {
         const auto &plane = std::make_shared<MockPlane>(this, PlaneType::Primary, i);
         crtcs << std::make_shared<MockCrtc>(this, plane, i, gammaSize);
         planes << plane;
     }
     deviceCaps.insert(MOCKDRM_DEVICE_CAP_ATOMIC, 1);
     deviceCaps.insert(DRM_CAP_DUMB_BUFFER, 1);
     deviceCaps.insert(DRM_CAP_PRIME, DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT);
     deviceCaps.insert(DRM_CAP_ASYNC_PAGE_FLIP, 0);
     deviceCaps.insert(DRM_CAP_ADDFB2_MODIFIERS, 1);
 }
 
 MockGpu::~MockGpu()
 {
     s_gpus.remove(fd);
 }
 
 MockPropertyBlob *MockGpu::getBlob(uint32_t id) const
 {
     auto it = std::find_if(propertyBlobs.begin(), propertyBlobs.end(), [id](const auto &propBlob) {
         return propBlob->id == id;
     });
     return it == propertyBlobs.end() ? nullptr : it->get();
 }
 
 MockConnector *MockGpu::findConnector(uint32_t id) const
 {
     auto it = std::find_if(connectors.constBegin(), connectors.constEnd(), [id](const auto &c){return c->id == id;});
     return it == connectors.constEnd() ? nullptr : (*it).get();
 }
 
 MockCrtc *MockGpu::findCrtc(uint32_t id) const
 {
     auto it = std::find_if(crtcs.constBegin(), crtcs.constEnd(), [id](const auto &c){return c->id == id;});
     return it == crtcs.constEnd() ? nullptr : (*it).get();
 }
 
 MockPlane *MockGpu::findPlane(uint32_t id) const
 {
     auto it = std::find_if(planes.constBegin(), planes.constEnd(), [id](const auto &p){return p->id == id;});
     return it == planes.constEnd() ? nullptr : (*it).get();
 }
 
 void MockGpu::flipPage(uint32_t crtcId)
 {
     auto crtc = findCrtc(crtcId);
     Q_ASSERT(crtc);
     for (const auto &plane : std::as_const(planes)) {
         if (plane->getProp(QStringLiteral("CRTC_ID")) == crtc->id) {
             plane->currentFb = plane->nextFb;
         }
     }
     // TODO page flip event?
 }
 
 //
 
 MockObject::MockObject(MockGpu *gpu)
     : id(gpu->idCounter++)
     , gpu(gpu)
 {
     gpu->objects << this;
 }
 
 MockObject::~MockObject()
 {
     gpu->objects.removeOne(this);
 }
 
 uint64_t MockObject::getProp(const QString &propName) const
 {
     for (const auto &prop : std::as_const(props)) {
         if (prop.name == propName) {
             return prop.value;
         }
     }
     Q_UNREACHABLE();
 }
 
 void MockObject::setProp(const QString &propName, uint64_t value)
 {
     for (auto &prop : props) {
         if (prop.name == propName) {
             prop.value = value;
             return;
         }
     }
     Q_UNREACHABLE();
 }
 
 uint32_t MockObject::getPropId(const QString &propName) const
 {
     for (const auto &prop : std::as_const(props)) {
         if (prop.name == propName) {
             return prop.id;
         }
     }
     Q_UNREACHABLE();
 }
 
 //
 
 MockProperty::MockProperty(MockObject *obj, QString name, uint64_t initialValue, uint32_t flags, QList<QByteArray> enums)
     : obj(obj)
     , id(obj->gpu->idCounter++)
     , flags(flags)
     , name(name)
     , value(initialValue)
     , enums(enums)
 {
     qDebug("Added property %s with id %u to object %u", qPrintable(name), id, obj->id);
 }
 
 MockPropertyBlob::MockPropertyBlob(MockGpu *gpu, const void *d, size_t size)
     : gpu(gpu)
     , id(gpu->idCounter++)
     , data(malloc(size))
     , size(size)
 {
     memcpy(data, d, size);
 }
 
 MockPropertyBlob::~MockPropertyBlob()
 {
     free(data);
 }
 
 //
 
 #define addProp(name, value, flags) props << MockProperty(this, QStringLiteral(name), value, flags)
 
 MockConnector::MockConnector(MockGpu *gpu, bool nonDesktop)
     : MockObject(gpu)
     , connection(DRM_MODE_CONNECTED)
     , type(DRM_MODE_CONNECTOR_DisplayPort)
     , encoder(std::make_shared<MockEncoder>(gpu, 0xFF))
 {
     gpu->encoders << encoder;
     addProp("CRTC_ID", 0, DRM_MODE_PROP_ATOMIC);
 
     addProp("Subpixel", DRM_MODE_SUBPIXEL_UNKNOWN, DRM_MODE_PROP_IMMUTABLE);
     addProp("non-desktop", nonDesktop, DRM_MODE_PROP_IMMUTABLE);
     addProp("vrr_capable", 0, DRM_MODE_PROP_IMMUTABLE);
 
     addProp("DPMS", DRM_MODE_DPMS_OFF, 0);
     addProp("EDID", 0, DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE);
 
     addMode(1920, 1080, 60.0);
 }
 
 void MockConnector::addMode(uint32_t width, uint32_t height, float refreshRate, bool preferred)
 {
     auto modeInfo = libxcvt_gen_mode_info(width, height, refreshRate, false, false);
 
     drmModeModeInfo mode{
         .clock = uint32_t(modeInfo->dot_clock),
         .hdisplay = uint16_t(modeInfo->hdisplay),
         .hsync_start = modeInfo->hsync_start,
         .hsync_end = modeInfo->hsync_end,
         .htotal = modeInfo->htotal,
         .hskew = 0,
         .vdisplay = uint16_t(modeInfo->vdisplay),
         .vsync_start = modeInfo->vsync_start,
         .vsync_end = modeInfo->vsync_end,
         .vtotal = modeInfo->vtotal,
         .vscan = 1,
         .vrefresh = uint32_t(modeInfo->vrefresh),
         .flags = modeInfo->mode_flags,
         .type = DRM_MODE_TYPE_DRIVER,
     };
     if (preferred) {
         mode.type |= DRM_MODE_TYPE_PREFERRED;
     }
     sprintf(mode.name, "%dx%d@%d", width, height, mode.vrefresh);
 
     modes.push_back(mode);
     free(modeInfo);
 }
 
 //
 
 MockCrtc::MockCrtc(MockGpu *gpu, const std::shared_ptr<MockPlane> &legacyPlane, int pipeIndex, int gamma_size)
     : MockObject(gpu)
     , pipeIndex(pipeIndex)
     , gamma_size(gamma_size)
     , legacyPlane(legacyPlane)
 {
     addProp("MODE_ID", 0, DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB);
     addProp("ACTIVE", 0, DRM_MODE_PROP_ATOMIC);
     addProp("GAMMA_LUT", 0, DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB);
     addProp("GAMMA_LUT_SIZE", gamma_size, DRM_MODE_PROP_ATOMIC);
 }
 
 
 //
 
 MockPlane::MockPlane(MockGpu *gpu, PlaneType type, int crtcIndex)
     : MockObject(gpu)
     , possibleCrtcs(1 << crtcIndex)
     , type(type)
 {
     props << MockProperty(this, QStringLiteral("type"), static_cast<uint64_t>(type), DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ENUM,
                           {QByteArrayLiteral("Primary"), QByteArrayLiteral("Overlay"), QByteArrayLiteral("Cursor")});
     addProp("FB_ID", 0, DRM_MODE_PROP_ATOMIC);
     addProp("CRTC_ID", 0, DRM_MODE_PROP_ATOMIC);
     addProp("CRTC_X", 0, DRM_MODE_PROP_ATOMIC);
     addProp("CRTC_Y", 0, DRM_MODE_PROP_ATOMIC);
     addProp("CRTC_W", 0, DRM_MODE_PROP_ATOMIC);
     addProp("CRTC_H", 0, DRM_MODE_PROP_ATOMIC);
     addProp("SRC_X", 0, DRM_MODE_PROP_ATOMIC);
     addProp("SRC_Y", 0, DRM_MODE_PROP_ATOMIC);
     addProp("SRC_W", 0, DRM_MODE_PROP_ATOMIC);
     addProp("SRC_H", 0, DRM_MODE_PROP_ATOMIC);
 }
 
 //
 
 MockEncoder::MockEncoder(MockGpu* gpu, uint32_t possible_crtcs)
     : MockObject(gpu)
     , possible_crtcs(possible_crtcs)
 {
 }
 
 
 //
 
 MockFb::MockFb(MockGpu *gpu, uint32_t width, uint32_t height)
     : id(gpu->idCounter++)
     , width(width)
     , height(height)
     , gpu(gpu)
 {
     gpu->fbs << this;
 }
 
 MockFb::~MockFb()
 {
     gpu->fbs.removeOne(this);
 }
 
 // drm functions
 
 #define GPU(fd, error)                 \
     auto gpu = getGpu(fd);             \
     if (!gpu) {                        \
         qWarning("invalid fd %d", fd); \
         errno = EINVAL;                \
         return error;                  \
     }                                  \
     std::scoped_lock lock(gpu->m_mutex);
 
 drmVersionPtr drmGetVersion(int fd)
 {
     GPU(fd, nullptr);
     drmVersionPtr ptr = new drmVersion;
     ptr->name = new char[gpu->name.size() + 1];
     strcpy(ptr->name, gpu->name.data());
     return ptr;
 }
 
 void drmFreeVersion(drmVersionPtr ptr)
 {
     Q_ASSERT(ptr);
     delete[] ptr->name;
     delete ptr;
 }
 
 int drmSetClientCap(int fd, uint64_t capability, uint64_t value)
 {
     GPU(fd, -EINVAL);
     if (capability == DRM_CLIENT_CAP_ATOMIC) {
         if (!gpu->deviceCaps[MOCKDRM_DEVICE_CAP_ATOMIC]) {
             return -(errno = ENOTSUP);
         }
         qDebug("Setting DRM_CLIENT_CAP_ATOMIC to %lu", value);
     }
     gpu->clientCaps.insert(capability, value);
     return 0;
 }
 
 int drmGetCap(int fd, uint64_t capability, uint64_t *value)
 {
     GPU(fd, -EINVAL);
     if (gpu->deviceCaps.contains(capability)) {
         *value = gpu->deviceCaps[capability];
         return 0;
     }
     qDebug("Could not find capability %lu", capability);
     return -(errno = EINVAL);
 }
 
 int drmHandleEvent(int fd, drmEventContextPtr evctx)
 {
     GPU(fd, -EINVAL);
     return -(errno = ENOTSUP);
 }
 
 int drmIoctl(int fd, unsigned long request, void *arg)
 {
     if (request == DRM_IOCTL_PRIME_FD_TO_HANDLE) {
         GPU(fd, -EINVAL);
         auto args = static_cast<drm_prime_handle *>(arg);
         args->handle = 42; // just pass a dummy value so the request doesn't fail
         return 0;
     } else if (request == DRM_IOCTL_PRIME_HANDLE_TO_FD) {
         return -(errno = ENOTSUP);
     } else if (request == DRM_IOCTL_GEM_CLOSE) {
         GPU(fd, -EINVAL);
         return 0;
     } else if (request == DRM_IOCTL_MODE_ATOMIC) {
         const auto args = static_cast<drm_mode_atomic *>(arg);
         auto req = drmModeAtomicAlloc();
         const uint32_t *const objects = reinterpret_cast<const uint32_t *>(args->objs_ptr);
         const uint32_t *const propsCounts = reinterpret_cast<const uint32_t *>(args->count_props_ptr);
         const uint32_t *const props = reinterpret_cast<const uint32_t *>(args->props_ptr);
         const uint64_t *const values = reinterpret_cast<const uint64_t *>(args->prop_values_ptr);
         uint32_t propIndex = 0;
         for (uint32_t objIndex = 0; objIndex < args->count_objs; objIndex++) {
             const uint32_t objectId = objects[objIndex];
             const uint32_t count = propsCounts[objIndex];
             for (uint32_t i = 0; i < count; i++) {
                 drmModeAtomicAddProperty(req, objectId, props[propIndex + i], values[propIndex + i]);
             }
             propIndex += count;
         }
         int ret = drmModeAtomicCommit(fd, req, args->flags, reinterpret_cast<void *>(args->user_data));
         drmModeAtomicFree(req);
         return ret;
     } else if (request == DRM_IOCTL_MODE_RMFB) {
         drmModeRmFB(fd, *static_cast<const uint32_t *>(arg));
     }
     return -(errno = ENOTSUP);
 }
 
 drmModeResPtr drmModeGetResources(int fd)
 {
     GPU(fd, nullptr)
     drmModeResPtr res = new drmModeRes;
 
     res->count_connectors = gpu->connectors.count();
     res->connectors = res->count_connectors ? new uint32_t[res->count_connectors] : nullptr;
     int i = 0;
     for (const auto &conn : std::as_const(gpu->connectors)) {
         res->connectors[i++] = conn->id;
     }
 
     res->count_encoders = gpu->encoders.count();
     res->encoders = res->count_encoders ? new uint32_t[res->count_encoders] : nullptr;
     i = 0;
     for (const auto &enc : std::as_const(gpu->encoders)) {
         res->encoders[i++] = enc->id;
     }
 
     res->count_crtcs = gpu->crtcs.count();
     res->crtcs = res->count_crtcs ? new uint32_t[res->count_crtcs] : nullptr;
     i = 0;
     for (const auto &crtc : std::as_const(gpu->crtcs)) {
         res->crtcs[i++] = crtc->id;
     }
 
     res->count_fbs = gpu->fbs.count();
     res->fbs = res->count_fbs ? new uint32_t[res->count_fbs] : nullptr;
     i = 0;
     for (const auto &fb : std::as_const(gpu->fbs)) {
         res->fbs[i++] = fb->id;
     }
 
     res->min_width = 0;
     res->min_height = 0;
     res->max_width = 2 << 14;
     res->max_height = 2 << 14;
 
     gpu->resPtrs << res;
     return res;
 }
 
 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
                  uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
                  uint32_t *buf_id)
 {
     GPU(fd, EINVAL)
     auto fb = new MockFb(gpu, width, height);
     *buf_id = fb->id;
     return 0;
 }
 
 int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
                   uint32_t pixel_format, const uint32_t bo_handles[4],
                   const uint32_t pitches[4], const uint32_t offsets[4],
                   uint32_t *buf_id, uint32_t flags)
 {
     GPU(fd, EINVAL)
     auto fb = new MockFb(gpu, width, height);
     *buf_id = fb->id;
     return 0;
 }
 
 int drmModeAddFB2WithModifiers(int fd, uint32_t width, uint32_t height,
                                uint32_t pixel_format, const uint32_t bo_handles[4],
                                const uint32_t pitches[4], const uint32_t offsets[4],
                                const uint64_t modifier[4], uint32_t *buf_id,
                                uint32_t flags)
 {
     GPU(fd, EINVAL)
     if (!gpu->deviceCaps.contains(DRM_CAP_ADDFB2_MODIFIERS)) {
         return -(errno = ENOTSUP);
     }
     auto fb = new MockFb(gpu, width, height);
     *buf_id = fb->id;
     return 0;
 }
 
 int drmModeRmFB(int fd, uint32_t bufferId)
 {
     GPU(fd, EINVAL)
     auto it = std::find_if(gpu->fbs.begin(), gpu->fbs.end(), [bufferId](const auto &fb){return fb->id == bufferId;});
     if (it == gpu->fbs.end()) {
         qWarning("invalid bufferId %u passed to drmModeRmFB", bufferId);
         return EINVAL;
     } else {
         auto fb = *it;
         gpu->fbs.erase(it);
         for (const auto &plane : std::as_const(gpu->planes)) {
             if (plane->nextFb == fb) {
                 plane->nextFb = nullptr;
             }
             if (plane->currentFb == fb) {
                 qWarning("current fb %u of plane %u got removed. Deactivating plane", bufferId, plane->id);
                 plane->setProp(QStringLiteral("CRTC_ID"), 0);
                 plane->setProp(QStringLiteral("FB_ID"), 0);
                 plane->currentFb = nullptr;
 
                 auto crtc = gpu->findCrtc(plane->getProp(QStringLiteral("CRTC_ID")));
                 Q_ASSERT(crtc);
                 crtc->setProp(QStringLiteral("ACTIVE"), 0);
                 qWarning("deactvating crtc %u", crtc->id);
 
                 for (const auto &conn : std::as_const(gpu->connectors)) {
                     if (conn->getProp(QStringLiteral("CRTC_ID")) == crtc->id) {
                         conn->setProp(QStringLiteral("CRTC_ID"), 0);
                         qWarning("deactvating connector %u", conn->id);
                     }
                 }
             }
         }
         delete fb;
         return 0;
     }
 }
 
 drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
 {
     GPU(fd, nullptr);
     if (auto crtc = gpu->findCrtc(crtcId)) {
         drmModeCrtcPtr c = new drmModeCrtc;
         c->crtc_id = crtcId;
         c->buffer_id = crtc->currentFb ? crtc->currentFb->id : 0;
         c->gamma_size = crtc->gamma_size;
         c->mode_valid = crtc->modeValid;
         c->mode = crtc->mode;
         c->x = 0;
         c->y = 0;
         c->width = crtc->mode.hdisplay;
         c->height = crtc->mode.vdisplay;
         gpu->drmCrtcs << c;
         return c;
     } else {
         qWarning("invalid crtcId %u passed to drmModeGetCrtc", crtcId);
         errno = EINVAL;
         return nullptr;
     }
 }
 
 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
                    drmModeModeInfoPtr mode)
 {
     GPU(fd, -EINVAL);
     auto crtc = gpu->findCrtc(crtcId);
     if (!crtc) {
         qWarning("invalid crtcId %u passed to drmModeSetCrtc", crtcId);
         return -(errno = EINVAL);
     }
     auto oldModeBlob = crtc->getProp(QStringLiteral("MODE_ID"));
     uint32_t modeBlob = 0;
     if (mode) {
         drmModeCreatePropertyBlob(fd, mode, sizeof(drmModeModeInfo), &modeBlob);
     }
 
     auto req = drmModeAtomicAlloc();
     req->legacyEmulation = true;
     drmModeAtomicAddProperty(req, crtcId, crtc->getPropId(QStringLiteral("MODE_ID")), modeBlob);
     drmModeAtomicAddProperty(req, crtcId, crtc->getPropId(QStringLiteral("ACTIVE")), modeBlob && count);
     QList<uint32_t> conns;
     for (int i = 0; i < count; i++) {
         conns << connectors[i];
     }
     for (const auto &conn : std::as_const(gpu->connectors)) {
         if (conns.contains(conn->id)) {
             drmModeAtomicAddProperty(req, conn->id, conn->getPropId(QStringLiteral("CRTC_ID")), modeBlob ? crtc->id : 0);
             conns.removeOne(conn->id);
         } else if (conn->getProp(QStringLiteral("CRTC_ID")) == crtc->id) {
             drmModeAtomicAddProperty(req, conn->id, conn->getPropId(QStringLiteral("CRTC_ID")), 0);
         }
     }
     if (!conns.isEmpty()) {
         for (const auto &c : std::as_const(conns)) {
             qWarning("invalid connector %u passed to drmModeSetCrtc", c);
         }
         drmModeAtomicFree(req);
         return -(errno = EINVAL);
     }
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("CRTC_ID")), modeBlob && count ? crtc->id : 0);
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("CRTC_X")), x);
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("CRTC_Y")), y);
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("CRTC_W")), mode->hdisplay - x);
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("CRTC_H")), mode->vdisplay - y);
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("FB_ID")), bufferId);
     int result = drmModeAtomicCommit(fd, req, DRM_MODE_ATOMIC_ALLOW_MODESET, nullptr);
     drmModeAtomicFree(req);
     if (result == 0) {
         drmModeDestroyPropertyBlob(fd, oldModeBlob);
     }
     return result;
 }
 
 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
 {
     GPU(fd, -EINVAL);
     if (auto crtc = gpu->findCrtc(crtcId)) {
         crtc->cursorRect.setSize(QSize(width, height));
         return 0;
     } else {
         qWarning("invalid crtcId %u passed to drmModeSetCursor", crtcId);
         return -(errno = EINVAL);
     }
 }
 
 int drmModeSetCursor2(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height, int32_t hot_x, int32_t hot_y)
 {
     GPU(fd, -EINVAL);
     return -(errno = ENOTSUP);
 }
 
 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
 {
     GPU(fd, -EINVAL);
     if (auto crtc = gpu->findCrtc(crtcId)) {
         crtc->cursorRect.moveTo(x, y);
         return 0;
     } else {
         qWarning("invalid crtcId %u passed to drmModeMoveCursor", crtcId);
         return -(errno = EINVAL);
     }
 }
 
 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
 {
     GPU(fd, nullptr);
     auto it = std::find_if(gpu->encoders.constBegin(), gpu->encoders.constEnd(), [encoder_id](const auto &e){return e->id == encoder_id;});
     if (it == gpu->encoders.constEnd()) {
         qWarning("invalid encoder_id %u passed to drmModeGetEncoder", encoder_id);
         errno = EINVAL;
         return nullptr;
     } else {
         auto encoder = *it;
         drmModeEncoderPtr enc = new drmModeEncoder;
         enc->encoder_id = encoder_id;
         enc->crtc_id = encoder->crtc ? encoder->crtc->id : 0;
         enc->encoder_type = 0;
         enc->possible_crtcs = encoder->possible_crtcs;
         enc->possible_clones = encoder->possible_clones;
 
         gpu->drmEncoders << enc;
         return enc;
     }
 }
 
 // Instance ID of (some) specific connector type, incremented
 // for each new connector (of any type) being created.
 // There are no particular guarantees on the _stability_ of
 // connector type "instance IDs" issued by the kernel,
 // so simply giving each (new) connector a fresh ID is
 // acceptable.
 static std::atomic<int> autoIncrementedConnectorId{};
 
 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connectorId)
 {
     GPU(fd, nullptr);
     if (auto conn = gpu->findConnector(connectorId)) {
         drmModeConnectorPtr c = new drmModeConnector{};
         c->connector_id = conn->id;
         c->connection = conn->connection;
 
         c->connector_type = conn->type;
         c->connector_type_id = autoIncrementedConnectorId++;
 
         c->encoder_id = conn->encoder ? conn->encoder->id : 0;
         c->count_encoders = conn->encoder ? 1 : 0;
         c->encoders = c->count_encoders ? new uint32_t[1] : nullptr;
         if (c->encoders) {
             c->encoders[0] = conn->encoder->id;
         }
         c->count_modes = conn->modes.count();
         c->modes = c->count_modes ? new drmModeModeInfo[c->count_modes] : nullptr;
         for (int i = 0; i < c->count_modes; i++) {
             c->modes[i] = conn->modes[i];
         }
         c->mmHeight = 900;
         c->mmWidth = 1600;
         c->subpixel = DRM_MODE_SUBPIXEL_HORIZONTAL_RGB;
 
         // these are not used nor will they be
         c->count_props = -1;
         c->props = nullptr;
         c->prop_values = nullptr;
 
         gpu->drmConnectors << c;
         return c;
     } else {
         qWarning("invalid connectorId %u passed to drmModeGetConnector", connectorId);
         errno = EINVAL;
         return nullptr;
     }
 }
 
 drmModeConnectorPtr drmModeGetConnectorCurrent(int fd, uint32_t connector_id)
 {
     return drmModeGetConnector(fd, connector_id);
 }
 
 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size, uint16_t *red, uint16_t *green, uint16_t *blue)
 {
     return -(errno = ENOTSUP);
 }
 
 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id, uint32_t flags, void *user_data)
 {
     GPU(fd, -EINVAL);
     auto crtc = gpu->findCrtc(crtc_id);
     if (!crtc) {
         qWarning("invalid crtc_id %u passed to drmModePageFlip", crtc_id);
         return -(errno = EINVAL);
     }
     auto req = drmModeAtomicAlloc();
     req->legacyEmulation = true;
     drmModeAtomicAddProperty(req, crtc->legacyPlane->id, crtc->legacyPlane->getPropId(QStringLiteral("FB_ID")), fb_id);
     int result = drmModeAtomicCommit(fd, req, flags, user_data);
     drmModeAtomicFree(req);
     return result;
 }
 
 
 drmModePlaneResPtr drmModeGetPlaneResources(int fd)
 {
     GPU(fd, nullptr);
     drmModePlaneResPtr res = new drmModePlaneRes;
     res->count_planes = gpu->planes.count();
     res->planes = res->count_planes ? new uint32_t[res->count_planes] : nullptr;
     for (uint i = 0; i < res->count_planes; i++) {
         res->planes[i] = gpu->planes[i]->id;
     }
     gpu->drmPlaneRes << res;
     return res;
 }
 
 drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
 {
     GPU(fd, nullptr);
     if (auto plane = gpu->findPlane(plane_id)) {
         drmModePlanePtr p = new drmModePlane;
         p->plane_id = plane_id;
         p->crtc_id = plane->getProp(QStringLiteral("CRTC_ID"));
         p->crtc_x = plane->getProp(QStringLiteral("CRTC_X"));
         p->crtc_y = plane->getProp(QStringLiteral("CRTC_Y"));
         p->fb_id = plane->getProp(QStringLiteral("FB_ID"));
         p->x = plane->getProp(QStringLiteral("SRC_X"));
         p->y = plane->getProp(QStringLiteral("SRC_Y"));
         p->possible_crtcs = plane->possibleCrtcs;
 
         // unused atm:
         p->count_formats = 0;
         p->formats = nullptr;
         p->gamma_size = 0;
 
         gpu->drmPlanes << p;
         return p;
     } else {
         qWarning("invalid plane_id %u passed to drmModeGetPlane", plane_id);
         errno = EINVAL;
         return nullptr;
     }
 }
 
 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId)
 {
     GPU(fd, nullptr);
     for (const auto &obj : std::as_const(gpu->objects)) {
         for (auto &prop : std::as_const(obj->props)) {
             if (prop.id == propertyId) {
                 drmModePropertyPtr p = new drmModePropertyRes;
                 p->prop_id = prop.id;
                 p->flags = prop.flags;
                 auto arr = prop.name.toLocal8Bit();
                 strcpy(p->name, arr.constData());
 
                 p->count_blobs = prop.flags & DRM_MODE_PROP_BLOB ? 1 : 0;
                 if (p->count_blobs) {
                     p->blob_ids = new uint32_t[1];
                     p->blob_ids[0] = prop.value;
                 } else {
                     p->blob_ids = nullptr;
                 }
 
                 p->count_enums = prop.enums.count();
                 p->enums = new drm_mode_property_enum[p->count_enums];
                 for (int i = 0; i < p->count_enums; i++) {
                     strcpy(p->enums[i].name, prop.enums[i].constData());
                     p->enums[i].value = i;
                 }
 
                 p->count_values = 1;
                 p->values = new uint64_t[1];
                 p->values[0] = prop.value;
 
                 gpu->drmProps << p;
                 return p;
             }
         }
     }
     qWarning("invalid propertyId %u passed to drmModeGetProperty", propertyId);
     errno = EINVAL;
     return nullptr;
 }
 
 void drmModeFreeProperty(drmModePropertyPtr ptr)
 {
     if (!ptr) {
         return;
     }
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmProps.removeOne(ptr)) {
             delete[] ptr->values;
             delete[] ptr->blob_ids;
             delete[] ptr->enums;
             delete ptr;
             return;
         }
     }
 }
 
 
 
 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
 {
     GPU(fd, nullptr);
     if (blob_id == 0) {
         return nullptr;
     }
     auto it = std::find_if(gpu->propertyBlobs.begin(), gpu->propertyBlobs.end(), [blob_id](const auto &blob) {
         return blob->id == blob_id;
     });
     if (it == gpu->propertyBlobs.end()) {
         qWarning("invalid blob_id %u passed to drmModeGetPropertyBlob", blob_id);
         errno = EINVAL;
         return nullptr;
     } else {
         auto blob = new drmModePropertyBlobRes;
         blob->id = (*it)->id;
         blob->length = (*it)->size;
         blob->data = malloc(blob->length);
         memcpy(blob->data, (*it)->data, blob->length);
         return blob;
     }
 }
 
 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
 {
     if (!ptr) {
         return;
     }
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmPropertyBlobs.removeOne(ptr)) {
             free(ptr->data);
             delete ptr;
             return;
         }
     }
 }
 
 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id, uint64_t value)
 {
     return drmModeObjectSetProperty(fd, connector_id, DRM_MODE_OBJECT_CONNECTOR, property_id, value);
 }
 
 static uint32_t getType(MockObject *obj)
 {
     if (dynamic_cast<MockConnector*>(obj)) {
         return DRM_MODE_OBJECT_CONNECTOR;
     } else if (dynamic_cast<MockCrtc*>(obj)) {
         return DRM_MODE_OBJECT_CRTC;
     } else if (dynamic_cast<MockPlane*>(obj)) {
         return DRM_MODE_OBJECT_PLANE;
     } else {
         return DRM_MODE_OBJECT_ANY;
     }
 }
 
 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd, uint32_t object_id, uint32_t object_type)
 {
     GPU(fd, nullptr);
     auto it = std::find_if(gpu->objects.constBegin(), gpu->objects.constEnd(), [object_id](const auto &obj){return obj->id == object_id;});
     if (it == gpu->objects.constEnd()) {
         qWarning("invalid object_id %u passed to drmModeObjectGetProperties", object_id);
         errno = EINVAL;
         return nullptr;
     } else {
         auto obj = *it;
         if (auto type = getType(obj); type != object_type) {
             qWarning("wrong object_type %u passed to drmModeObjectGetProperties for object %u with type %u", object_type, object_id, type);
             errno = EINVAL;
             return nullptr;
         }
         QList<MockProperty> props;
         bool deviceAtomic = gpu->clientCaps.contains(DRM_CLIENT_CAP_ATOMIC) && gpu->clientCaps[DRM_CLIENT_CAP_ATOMIC];
         for (const auto &prop : std::as_const(obj->props)) {
             if (deviceAtomic || !(prop.flags & DRM_MODE_PROP_ATOMIC)) {
                 props << prop;
             }
         }
         drmModeObjectPropertiesPtr p = new drmModeObjectProperties;
         p->count_props = props.count();
         p->props = new uint32_t[p->count_props];
         p->prop_values = new uint64_t[p->count_props];
         int i = 0;
         for (const auto &prop : std::as_const(props)) {
             p->props[i] = prop.id;
             p->prop_values[i] = prop.value;
             i++;
         }
         gpu->drmObjectProperties << p;
         return p;
     }
 }
 
 void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmObjectProperties.removeOne(ptr)) {
             delete[] ptr->props;
             delete[] ptr->prop_values;
             delete ptr;
             return;
         }
     }
 }
 
 int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type, uint32_t property_id, uint64_t value)
 {
     GPU(fd, -EINVAL);
     auto it = std::find_if(gpu->objects.constBegin(), gpu->objects.constEnd(), [object_id](const auto &obj){return obj->id == object_id;});
     if (it == gpu->objects.constEnd()) {
         qWarning("invalid object_id %u passed to drmModeObjectSetProperty", object_id);
         return -(errno = EINVAL);
     } else {
         auto obj = *it;
         if (auto type = getType(obj); type != object_type) {
             qWarning("wrong object_type %u passed to drmModeObjectSetProperty for object %u with type %u", object_type, object_id, type);
             return -(errno = EINVAL);
         }
         auto req = drmModeAtomicAlloc();
         req->legacyEmulation = true;
         drmModeAtomicAddProperty(req, object_id, property_id, value);
         int result = drmModeAtomicCommit(fd, req, 0, nullptr);
         drmModeAtomicFree(req);
         return result;
     }
 }
 
 static QList<drmModeAtomicReqPtr> s_atomicReqs;
 
 drmModeAtomicReqPtr drmModeAtomicAlloc(void)
 {
     auto req = new drmModeAtomicReq;
     s_atomicReqs << req;
     return req;
 }
 
 void drmModeAtomicFree(drmModeAtomicReqPtr req)
 {
     s_atomicReqs.removeOne(req);
     delete req;
 }
 
 int drmModeAtomicAddProperty(drmModeAtomicReqPtr req, uint32_t object_id, uint32_t property_id, uint64_t value)
 {
     if (!req) {
         return -(errno = EINVAL);
     }
     Prop p;
     p.obj = object_id;
     p.prop = property_id;
     p.value = value;
     req->props << p;
     return req->props.count();
 }
 
 static bool checkIfEqual(const drmModeModeInfo &one, const drmModeModeInfo &two)
 {
     return one.clock       == two.clock
         && one.hdisplay    == two.hdisplay
         && one.hsync_start == two.hsync_start
         && one.hsync_end   == two.hsync_end
         && one.htotal      == two.htotal
         && one.hskew       == two.hskew
         && one.vdisplay    == two.vdisplay
         && one.vsync_start == two.vsync_start
         && one.vsync_end   == two.vsync_end
         && one.vtotal      == two.vtotal
         && one.vscan       == two.vscan
         && one.vrefresh    == two.vrefresh;
 }
 
 int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req, uint32_t flags, void *user_data)
 {
     GPU(fd, -EINVAL);
     if (!req->legacyEmulation && (!gpu->clientCaps.contains(DRM_CLIENT_CAP_ATOMIC) || !gpu->clientCaps[DRM_CLIENT_CAP_ATOMIC])) {
         qWarning("drmModeAtomicCommit requires the atomic capability");
         return -(errno = EINVAL);
     }
 
     // verify flags
     if ((flags & DRM_MODE_ATOMIC_NONBLOCK) && (flags & DRM_MODE_ATOMIC_ALLOW_MODESET)) {
         qWarning() << "NONBLOCK and MODESET are not allowed together";
         return -(errno = EINVAL);
     } else if ((flags & DRM_MODE_ATOMIC_TEST_ONLY) && (flags & DRM_MODE_PAGE_FLIP_EVENT)) {
         qWarning() << "TEST_ONLY and PAGE_FLIP_EVENT are not allowed together";
         return -(errno = EINVAL);
     } else if (flags & DRM_MODE_PAGE_FLIP_ASYNC) {
         qWarning() << "PAGE_FLIP_ASYNC is currently not supported with AMS";
         return -(errno = EINVAL);
     }
 
     QList<MockConnector> connCopies;
     for (const auto &conn : std::as_const(gpu->connectors)) {
         connCopies << *conn;
     }
     QList<MockCrtc> crtcCopies;
     for (const auto &crtc : std::as_const(gpu->crtcs)) {
         crtcCopies << *crtc;
     }
     QList<MockPlane> planeCopies;
     for (const auto &plane : std::as_const(gpu->planes)) {
         planeCopies << *plane;
     }
 
     QList<MockObject *> objects;
     for (int i = 0; i < connCopies.count(); i++) {
         objects << &connCopies[i];
     }
     for (int i = 0; i < crtcCopies.count(); i++) {
         objects << &crtcCopies[i];
     }
     for (int i = 0; i < planeCopies.count(); i++) {
         objects << &planeCopies[i];
     }
 
     // apply changes to the copies
     for (int i = 0; i < req->props.count(); i++) {
         auto p = req->props[i];
         auto it = std::find_if(objects.constBegin(), objects.constEnd(), [p](const auto &obj){return obj->id == p.obj;});
         if (it == objects.constEnd()) {
             qWarning("Object %u in atomic request not found!", p.obj);
             return -(errno = EINVAL);
         }
         auto &obj = *it;
         if (obj->id == p.obj) {
             auto prop = std::find_if(obj->props.begin(), obj->props.end(), [p](const auto &prop){return prop.id == p.prop;});
             if (prop == obj->props.end()) {
                 qWarning("Property %u in atomic request for object %u not found!", p.prop, p.obj);
                 return -(errno = EINVAL);
             }
             if (prop->value != p.value) {
                 if (!(flags & DRM_MODE_ATOMIC_ALLOW_MODESET) && (prop->name == QStringLiteral("CRTC_ID") || prop->name == QStringLiteral("ACTIVE"))) {
                     qWarning("Atomic request without DRM_MODE_ATOMIC_ALLOW_MODESET tries to do a modeset with object %u", obj->id);
                     return -(errno = EINVAL);
                 }
                 if (prop->flags & DRM_MODE_PROP_BLOB) {
                     auto blobExists = gpu->getBlob(p.value) != nullptr;
                     if (blobExists != (p.value > 0)) {
                         qWarning("Atomic request tries to set property %s on obj %u to invalid blob id %lu", qPrintable(prop->name), obj->id, p.value);
                         return -(errno = EINVAL);
                     }
                 }
                 prop->value = p.value;
             }
         }
     }
 
     // check if the desired changes are allowed
     struct Pipeline {
         MockCrtc *crtc;
         QList<MockConnector *> conns;
         MockPlane *primaryPlane = nullptr;
     };
     QList<Pipeline> pipelines;
     for (int i = 0; i < crtcCopies.count(); i++) {
         if (crtcCopies[i].getProp(QStringLiteral("ACTIVE"))) {
             auto blob = gpu->getBlob(crtcCopies[i].getProp(QStringLiteral("MODE_ID")));
             if (!blob) {
                 qWarning("Atomic request tries to enable CRTC %u without a mode", crtcCopies[i].id);
                 return -(errno = EINVAL);
             } else if (blob->size != sizeof(drmModeModeInfo)) {
                 qWarning("Atomic request tries to enable CRTC %u with an invalid mode blob", crtcCopies[i].id);
                 return -(errno = EINVAL);
             }
             Pipeline pipeline;
             pipeline.crtc = &crtcCopies[i];
             pipelines << pipeline;
         }
     }
     for (int i = 0; i < connCopies.count(); i++) {
         if (auto crtc = connCopies[i].getProp(QStringLiteral("CRTC_ID"))) {
             bool found = false;
             for (int p = 0; p < pipelines.count(); p++) {
                 if (pipelines[p].crtc->id == crtc) {
                     pipelines[p].conns << &connCopies[i];
                     found = true;
                     break;
                 }
             }
             if (!found) {
                 qWarning("CRTC_ID of connector %u points to inactive or wrong crtc", connCopies[i].id);
                 return -(errno = EINVAL);
             }
         }
     }
     for (int i = 0; i < planeCopies.count(); i++) {
         if (auto crtc = planeCopies[i].getProp(QStringLiteral("CRTC_ID"))) {
             bool found = false;
             for (int p = 0; p < pipelines.count(); p++) {
                 if (pipelines[p].crtc->id == crtc) {
                     if (pipelines[p].primaryPlane) {
                         qWarning("crtc %u has more than one primary planes assigned: %u and %u", pipelines[p].crtc->id, pipelines[p].primaryPlane->id, planeCopies[i].id);
                         return -(errno = EINVAL);
                     } else if (!(planeCopies[i].possibleCrtcs & (1 << pipelines[p].crtc->pipeIndex))) {
                         qWarning("crtc %u is not suitable for primary plane %u", pipelines[p].crtc->id, planeCopies[i].id);
                         return -(errno = EINVAL);
                     } else {
                         pipelines[p].primaryPlane = &planeCopies[i];
                         found = true;
                         break;
                     }
                 }
             }
             if (!found) {
                 qWarning("CRTC_ID of plane %u points to inactive or wrong crtc", planeCopies[i].id);
                 return -(errno = EINVAL);
             }
             auto fbId = planeCopies[i].getProp(QStringLiteral("FB_ID"));
             if (!fbId) {
                 qWarning("FB_ID of active plane %u is 0", planeCopies[i].id);
                 return -(errno = EINVAL);
             }
             auto it = std::find_if(gpu->fbs.constBegin(), gpu->fbs.constEnd(), [fbId](auto fb){return fb->id == fbId;});
             if (it == gpu->fbs.constEnd()) {
                 qWarning("FB_ID %lu of active plane %u is invalid", fbId, planeCopies[i].id);
                 return -(errno = EINVAL);
             }
             planeCopies[i].nextFb = *it;
         } else {
             planeCopies[i].nextFb = nullptr;
         }
     }
     for (const auto &p : std::as_const(pipelines)) {
         if (p.conns.isEmpty()) {
             qWarning("Active crtc %u has no assigned connectors", p.crtc->id);
             return -(errno = EINVAL);
         } else if (!p.primaryPlane) {
             qWarning("Active crtc %u has no assigned primary plane", p.crtc->id);
             return -(errno = EINVAL);
         } else {
             drmModeModeInfo mode = *static_cast<drmModeModeInfo*>(gpu->getBlob(p.crtc->getProp(QStringLiteral("MODE_ID")))->data);
             for (const auto &conn : p.conns) {
                 bool modeFound = std::find_if(conn->modes.constBegin(), conn->modes.constEnd(), [mode](const auto &m){
                     return checkIfEqual(mode, m);
                 }) != conn->modes.constEnd();
                 if (!modeFound) {
                     qWarning("mode on crtc %u is incompatible with connector %u", p.crtc->id, conn->id);
                     return -(errno = EINVAL);
                 }
             }
         }
     }
 
     // if wanted, apply them
 
     if (!(flags & DRM_MODE_ATOMIC_TEST_ONLY)) {
         for (auto &conn : std::as_const(gpu->connectors)) {
             auto it = std::find_if(connCopies.constBegin(), connCopies.constEnd(), [conn](auto c){return c.id == conn->id;});
             if (it == connCopies.constEnd()) {
                 qCritical("implementation error: can't find connector %u", conn->id);
                 return -(errno = EINVAL);
             }
             *conn = *it;
         }
         for (auto &crtc : std::as_const(gpu->crtcs)) {
             auto it = std::find_if(crtcCopies.constBegin(), crtcCopies.constEnd(), [crtc](auto c){return c.id == crtc->id;});
             if (it == crtcCopies.constEnd()) {
                 qCritical("implementation error: can't find crtc %u", crtc->id);
                 return -(errno = EINVAL);
             }
             *crtc = *it;
         }
         for (auto &plane : std::as_const(gpu->planes)) {
             auto it = std::find_if(planeCopies.constBegin(), planeCopies.constEnd(), [plane](auto c){return c.id == plane->id;});
             if (it == planeCopies.constEnd()) {
                 qCritical("implementation error: can't find plane %u", plane->id);
                 return -(errno = EINVAL);
             }
             *plane = *it;
         }
 
         if (flags & DRM_MODE_PAGE_FLIP_EVENT) {
             // Unsupported
         }
     }
 
     return 0;
 }
 
 
 int drmModeCreatePropertyBlob(int fd, const void *data, size_t size, uint32_t *id)
 {
     GPU(fd, -EINVAL);
     if (!data || !size || !id) {
         return -(errno = EINVAL);
     }
     auto blob = std::make_unique<MockPropertyBlob>(gpu, data, size);
     *id = blob->id;
     gpu->propertyBlobs.push_back(std::move(blob));
     return 0;
 }
 
 int drmModeDestroyPropertyBlob(int fd, uint32_t id)
 {
     GPU(fd, -EINVAL);
     auto it = std::remove_if(gpu->propertyBlobs.begin(), gpu->propertyBlobs.end(), [id](const auto &blob) {
         return blob->id == id;
     });
     if (it == gpu->propertyBlobs.end()) {
         return -(errno = EINVAL);
     } else {
         gpu->propertyBlobs.erase(it, gpu->propertyBlobs.end());
         return 0;
     }
 }
 
 int drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags, uint32_t *lessee_id)
 {
     return -(errno = ENOTSUP);
 }
 
 drmModeLesseeListPtr drmModeListLessees(int fd)
 {
     return nullptr;
 }
 
 drmModeObjectListPtr drmModeGetLease(int fd)
 {
     return nullptr;
 }
 
 int drmModeRevokeLease(int fd, uint32_t lessee_id)
 {
     return -(errno = ENOTSUP);
 }
 
 void drmModeFreeResources(drmModeResPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->resPtrs.removeOne(ptr)) {
             delete[] ptr->connectors;
             delete[] ptr->crtcs;
             delete[] ptr->encoders;
             delete[] ptr->fbs;
             delete ptr;
         }
     }
 }
 
 void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmPlaneRes.removeOne(ptr)) {
             delete[] ptr->planes;
             delete ptr;
         }
     }
 }
 
 void drmModeFreeCrtc(drmModeCrtcPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmCrtcs.removeOne(ptr)) {
             delete ptr;
             return;
         }
     }
     Q_UNREACHABLE();
 }
 
 void drmModeFreeConnector(drmModeConnectorPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmConnectors.removeOne(ptr)) {
             delete[] ptr->encoders;
             delete[] ptr->props;
             delete[] ptr->prop_values;
             delete ptr;
             return;
         }
     }
     Q_UNREACHABLE();
 }
 
 void drmModeFreeEncoder(drmModeEncoderPtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmEncoders.removeOne(ptr)) {
             delete ptr;
             return;
         }
     }
     Q_UNREACHABLE();
 }
 
 void drmModeFreePlane(drmModePlanePtr ptr)
 {
     for (const auto &gpu : std::as_const(s_gpus)) {
         if (gpu->drmPlanes.removeOne(ptr)) {
             delete ptr;
             return;
         }
     }
     Q_UNREACHABLE();
 }