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// Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
// Copyright (C) 2017 The Qt Company Ltd.
// Copyright (C) 2016 Pelagicore AG
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qeglfskmsvsp2integration.h"
#include "qeglfskmsvsp2device.h"
#include "qeglfskmsvsp2screen.h"
#include "private/qeglfswindow_p.h"
#include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h>
#include <QtGui/private/qeglconvenience_p.h>
#include <QtCore/QLoggingCategory>
#include <QtCore/QJsonDocument>
#include <QtCore/QJsonObject>
#include <QtCore/QJsonArray>
#include <QtGui/qpa/qplatformwindow.h>
#include <QtGui/QScreen>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
QT_BEGIN_NAMESPACE
QEglFSKmsVsp2Integration::QEglFSKmsVsp2Integration()
{
qCDebug(qLcEglfsKmsDebug, "New DRM/KMS via Vsp2 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 QEglFSKmsVsp2Integration::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 QEglFSKmsVsp2Integration::createNativeOffscreenWindow(const QSurfaceFormat &format)
{
Q_UNUSED(format);
Q_ASSERT(device());
gbm_surface *surface = gbm_surface_create(static_cast<QEglFSKmsVsp2Device *>(device())->gbmDevice(),
1, 1,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_RENDERING);
return reinterpret_cast<EGLNativeWindowType>(surface);
}
void QEglFSKmsVsp2Integration::destroyNativeWindow(EGLNativeWindowType window)
{
gbm_surface *surface = reinterpret_cast<gbm_surface *>(window);
//TODO call screen destroysurface instead
gbm_surface_destroy(surface);
}
void QEglFSKmsVsp2Integration::presentBuffer(QPlatformSurface *surface)
{
QWindow *window = static_cast<QWindow *>(surface->surface());
auto *screen = static_cast<QEglFSKmsVsp2Screen *>(window->screen()->handle());
screen->flip();
}
QKmsDevice *QEglFSKmsVsp2Integration::createDevice()
{
QString path = screenConfig()->devicePath();
if (!path.isEmpty()) {
qCDebug(qLcEglfsKmsDebug) << "VSP2: 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 QEglFSKmsVsp2Device(screenConfig(), path);
}
class QEglFSKmsVsp2Window : public QEglFSWindow
{
public:
QEglFSKmsVsp2Window(QWindow *w, const QEglFSKmsVsp2Integration *integration)
: QEglFSWindow(w)
, m_integration(integration)
{}
~QEglFSKmsVsp2Window() { destroy(); }
void resetSurface() override;
void invalidateSurface() override;
const QEglFSKmsVsp2Integration *m_integration;
};
void QEglFSKmsVsp2Window::resetSurface()
{
auto *vsp2Screen = static_cast<QEglFSKmsVsp2Screen *>(screen());
EGLDisplay display = vsp2Screen->display();
QSurfaceFormat platformFormat = m_integration->surfaceFormatFor(window()->requestedFormat());
m_config = QEglFSDeviceIntegration::chooseConfig(display, platformFormat);
m_format = q_glFormatFromConfig(display, m_config, platformFormat);
// One fullscreen window per screen -> the native window is simply the gbm_surface the screen created.
m_window = reinterpret_cast<EGLNativeWindowType>(vsp2Screen->createSurface());
PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC createPlatformWindowSurface = nullptr;
const char *extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (extensions && (strstr(extensions, "EGL_KHR_platform_gbm") || strstr(extensions, "EGL_MESA_platform_gbm"))) {
createPlatformWindowSurface = reinterpret_cast<PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC>(
eglGetProcAddress("eglCreatePlatformWindowSurfaceEXT"));
}
if (createPlatformWindowSurface) {
m_surface = createPlatformWindowSurface(display, m_config, reinterpret_cast<void *>(m_window), nullptr);
} else {
qCDebug(qLcEglfsKmsDebug, "No eglCreatePlatformWindowSurface for GBM, falling back to eglCreateWindowSurface");
m_surface = eglCreateWindowSurface(display, m_config, m_window, nullptr);
}
}
void QEglFSKmsVsp2Window::invalidateSurface()
{
auto *vsp2Screen = static_cast<QEglFSKmsVsp2Screen *>(screen());
QEglFSWindow::invalidateSurface();
vsp2Screen->resetSurface();
}
QEglFSWindow *QEglFSKmsVsp2Integration::createWindow(QWindow *window) const
{
return new QEglFSKmsVsp2Window(window, this);
}
QT_END_NAMESPACE
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