summaryrefslogtreecommitdiffstats
path: root/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmintegration.cpp
blob: 7071dfdaa0c7135ff70a57fc2800fa52de03d6ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
/****************************************************************************
**
** Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
** Copyright (C) 2016 The Qt Company Ltd.
** Copyright (C) 2016 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qeglfskmsgbmintegration.h"
#include "qeglfskmsgbmdevice.h"
#include "qeglfskmsgbmscreen.h"
#include "qeglfskmsgbmcursor.h"
#include "qeglfskmsgbmwindow.h"
#include "private/qeglfscursor_p.h"

#include <QtCore/QLoggingCategory>
#include <QtGui/QScreen>
#include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h>

#include <gbm.h>

QT_BEGIN_NAMESPACE

QMutex QEglFSKmsGbmScreen::m_waitForFlipMutex;

QEglFSKmsGbmIntegration::QEglFSKmsGbmIntegration()
{
    qCDebug(qLcEglfsKmsDebug, "New DRM/KMS via GBM integration created");
}

#ifndef EGL_EXT_platform_base
typedef EGLDisplay (EGLAPIENTRYP PFNEGLGETPLATFORMDISPLAYEXTPROC) (EGLenum platform, void *native_display, const EGLint *attrib_list);
typedef EGLSurface (EGLAPIENTRYP PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC) (EGLDisplay dpy, EGLConfig config, void *native_window, const EGLint *attrib_list);
#endif

#ifndef EGL_PLATFORM_GBM_KHR
#define EGL_PLATFORM_GBM_KHR 0x31D7
#endif

EGLDisplay QEglFSKmsGbmIntegration::createDisplay(EGLNativeDisplayType nativeDisplay)
{
    qCDebug(qLcEglfsKmsDebug, "Querying EGLDisplay");
    EGLDisplay display;

    PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplay = nullptr;
    const char *extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
    if (extensions && (strstr(extensions, "EGL_KHR_platform_gbm") || strstr(extensions, "EGL_MESA_platform_gbm"))) {
        getPlatformDisplay = reinterpret_cast<PFNEGLGETPLATFORMDISPLAYEXTPROC>(
            eglGetProcAddress("eglGetPlatformDisplayEXT"));
    }

    if (getPlatformDisplay) {
        display = getPlatformDisplay(EGL_PLATFORM_GBM_KHR, nativeDisplay, nullptr);
    } else {
        qCDebug(qLcEglfsKmsDebug, "No eglGetPlatformDisplay for GBM, falling back to eglGetDisplay");
        display = eglGetDisplay(nativeDisplay);
    }

    return display;
}

EGLNativeWindowType QEglFSKmsGbmIntegration::createNativeOffscreenWindow(const QSurfaceFormat &format)
{
    Q_UNUSED(format);
    Q_ASSERT(device());

    gbm_surface *surface = gbm_surface_create(static_cast<QEglFSKmsGbmDevice *>(device())->gbmDevice(),
                                              1, 1,
                                              GBM_FORMAT_XRGB8888,
                                              GBM_BO_USE_RENDERING);

    return reinterpret_cast<EGLNativeWindowType>(surface);
}

void QEglFSKmsGbmIntegration::destroyNativeWindow(EGLNativeWindowType window)
{
    gbm_surface *surface = reinterpret_cast<gbm_surface *>(window);
    gbm_surface_destroy(surface);
}

QPlatformCursor *QEglFSKmsGbmIntegration::createCursor(QPlatformScreen *screen) const
{
#if QT_CONFIG(opengl)
    if (!screenConfig()->hwCursor()) {
        qCDebug(qLcEglfsKmsDebug, "Using plain OpenGL mouse cursor");
        return new QEglFSCursor(screen);
    }
#endif
    return nullptr;
}

void QEglFSKmsGbmIntegration::presentBuffer(QPlatformSurface *surface)
{
    QWindow *window = static_cast<QWindow *>(surface->surface());
    QEglFSKmsScreen *screen = static_cast<QEglFSKmsScreen *>(window->screen()->handle());

    screen->flip();
}

QKmsDevice *QEglFSKmsGbmIntegration::createDevice()
{
    QString path = screenConfig()->devicePath();
    if (!path.isEmpty()) {
        qCDebug(qLcEglfsKmsDebug) << "GBM: Using DRM device" << path << "specified in config file";
    } else {
        QDeviceDiscovery *d = QDeviceDiscovery::create(QDeviceDiscovery::Device_VideoMask);
        const QStringList devices = d->scanConnectedDevices();
        qCDebug(qLcEglfsKmsDebug) << "Found the following video devices:" << devices;
        d->deleteLater();

        if (Q_UNLIKELY(devices.isEmpty()))
            qFatal("Could not find DRM device!");

        path = devices.first();
        qCDebug(qLcEglfsKmsDebug) << "Using" << path;
    }

    return new QEglFSKmsGbmDevice(screenConfig(), path);
}

QEglFSWindow *QEglFSKmsGbmIntegration::createWindow(QWindow *window) const
{
    return new QEglFSKmsGbmWindow(window, this);
}

QT_END_NAMESPACE