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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qminimaleglscreen.h"
#include "qminimaleglwindow.h"
#include <QtGui/private/qeglconvenience_p.h>
#ifndef QT_NO_OPENGL
# include <QtGui/private/qeglplatformcontext_p.h>
#endif
#ifdef Q_OPENKODE
#include <KD/kd.h>
#include <KD/NV_initialize.h>
#endif //Q_OPENKODE
QT_BEGIN_NAMESPACE
// #define QEGL_EXTRA_DEBUG
#ifndef QT_NO_OPENGL
class QMinimalEglContext : public QEGLPlatformContext
{
public:
QMinimalEglContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display)
: QEGLPlatformContext(format, share, display)
{
}
EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface) override
{
QMinimalEglWindow *window = static_cast<QMinimalEglWindow *>(surface);
QMinimalEglScreen *screen = static_cast<QMinimalEglScreen *>(window->screen());
return screen->surface();
}
};
#endif
QMinimalEglScreen::QMinimalEglScreen(EGLNativeDisplayType display)
: m_depth(32)
, m_format(QImage::Format_Invalid)
, m_platformContext(nullptr)
, m_surface(nullptr)
{
#ifdef QEGL_EXTRA_DEBUG
qWarning("QEglScreen %p\n", this);
#endif
EGLint major, minor;
if (Q_UNLIKELY(!eglBindAPI(EGL_OPENGL_ES_API))) {
qWarning("Could not bind GL_ES API\n");
qFatal("EGL error");
}
m_dpy = eglGetDisplay(display);
if (Q_UNLIKELY(m_dpy == EGL_NO_DISPLAY)) {
qWarning("Could not open egl display\n");
qFatal("EGL error");
}
qWarning("Opened display %p\n", m_dpy);
if (Q_UNLIKELY(!eglInitialize(m_dpy, &major, &minor))) {
qWarning("Could not initialize egl display\n");
qFatal("EGL error");
}
qWarning("Initialized display %d %d\n", major, minor);
}
QMinimalEglScreen::~QMinimalEglScreen()
{
if (m_surface)
eglDestroySurface(m_dpy, m_surface);
eglTerminate(m_dpy);
}
void QMinimalEglScreen::createAndSetPlatformContext() const {
const_cast<QMinimalEglScreen *>(this)->createAndSetPlatformContext();
}
void QMinimalEglScreen::createAndSetPlatformContext()
{
QSurfaceFormat platformFormat;
QByteArray depthString = qgetenv("QT_QPA_EGLFS_DEPTH");
if (depthString.toInt() == 16) {
platformFormat.setDepthBufferSize(16);
platformFormat.setRedBufferSize(5);
platformFormat.setGreenBufferSize(6);
platformFormat.setBlueBufferSize(5);
m_depth = 16;
m_format = QImage::Format_RGB16;
} else {
platformFormat.setDepthBufferSize(24);
platformFormat.setStencilBufferSize(8);
platformFormat.setRedBufferSize(8);
platformFormat.setGreenBufferSize(8);
platformFormat.setBlueBufferSize(8);
m_depth = 32;
m_format = QImage::Format_RGB32;
}
if (!qEnvironmentVariableIsEmpty("QT_QPA_EGLFS_MULTISAMPLE"))
platformFormat.setSamples(4);
EGLConfig config = q_configFromGLFormat(m_dpy, platformFormat);
EGLNativeWindowType eglWindow = 0;
#ifdef Q_OPENKODE
if (Q_UNLIKELY(kdInitializeNV() == KD_ENOTINITIALIZED))
qFatal("Did not manage to initialize openkode");
KDWindow *window = kdCreateWindow(m_dpy,config,0);
kdRealizeWindow(window,&eglWindow);
#endif
#ifdef QEGL_EXTRA_DEBUG
q_printEglConfig(m_dpy, config);
#endif
m_surface = eglCreateWindowSurface(m_dpy, config, eglWindow, nullptr);
if (Q_UNLIKELY(m_surface == EGL_NO_SURFACE)) {
qWarning("Could not create the egl surface: error = 0x%x\n", eglGetError());
eglTerminate(m_dpy);
qFatal("EGL error");
}
// qWarning("Created surface %dx%d\n", w, h);
#ifndef QT_NO_OPENGL
QEGLPlatformContext *platformContext = new QMinimalEglContext(platformFormat, nullptr, m_dpy);
m_platformContext = platformContext;
#endif
EGLint w,h; // screen size detection
eglQuerySurface(m_dpy, m_surface, EGL_WIDTH, &w);
eglQuerySurface(m_dpy, m_surface, EGL_HEIGHT, &h);
m_geometry = QRect(0,0,w,h);
}
QRect QMinimalEglScreen::geometry() const
{
if (m_geometry.isNull()) {
createAndSetPlatformContext();
}
return m_geometry;
}
int QMinimalEglScreen::depth() const
{
return m_depth;
}
QImage::Format QMinimalEglScreen::format() const
{
if (m_format == QImage::Format_Invalid)
createAndSetPlatformContext();
return m_format;
}
#ifndef QT_NO_OPENGL
QPlatformOpenGLContext *QMinimalEglScreen::platformContext() const
{
if (!m_platformContext) {
QMinimalEglScreen *that = const_cast<QMinimalEglScreen *>(this);
that->createAndSetPlatformContext();
}
return m_platformContext;
}
#endif
QT_END_NAMESPACE
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