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 (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, NULL);
if (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);
QEGLPlatformContext *platformContext = new QMinimalEglContext(platformFormat, 0, m_dpy);
m_platformContext = platformContext;
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);
}
void QEGLPlatformContext::init(const QSurfaceFormat &format, QPlatformOpenGLContext *share)
{
m_format = q_glFormatFromConfig(m_eglDisplay, m_eglConfig);
// m_format now has the renderableType() resolved (it cannot be Default anymore)
// but does not yet contain version, profile, options.
m_shareContext = share ? static_cast<QEGLPlatformContext *>(share)->m_eglContext : 0;
QVector<EGLint> contextAttrs;
contextAttrs.append(EGL_CONTEXT_CLIENT_VERSION);
contextAttrs.append(format.majorVersion());
const bool hasKHRCreateContext = q_hasEglExtension(m_eglDisplay, "EGL_KHR_create_context");
if (hasKHRCreateContext) {
contextAttrs.append(EGL_CONTEXT_MINOR_VERSION_KHR);
contextAttrs.append(format.minorVersion());
int flags = 0;
// The debug bit is supported both for OpenGL and OpenGL ES.
if (format.testOption(QSurfaceFormat::DebugContext))
flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
// The fwdcompat bit is only for OpenGL 3.0+.
if (m_format.renderableType() == QSurfaceFormat::OpenGL
&& format.majorVersion() >= 3
&& !format.testOption(QSurfaceFormat::DeprecatedFunctions))
flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
if (flags) {
contextAttrs.append(EGL_CONTEXT_FLAGS_KHR);
contextAttrs.append(flags);
}
// Profiles are OpenGL only and mandatory in 3.2+. The value is silently ignored for < 3.2.
if (m_format.renderableType() == QSurfaceFormat::OpenGL) {
contextAttrs.append(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
contextAttrs.append(format.profile() == QSurfaceFormat::CoreProfile
? EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR
: EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR);
}
}
contextAttrs.append(EGL_NONE);
switch (m_format.renderableType()) {
case QSurfaceFormat::OpenVG:
m_api = EGL_OPENVG_API;
break;
#ifdef EGL_VERSION_1_4
case QSurfaceFormat::OpenGL:
m_api = EGL_OPENGL_API;
break;
#endif // EGL_VERSION_1_4
default:
m_api = EGL_OPENGL_ES_API;
break;
}
eglBindAPI(m_api);
m_eglContext = eglCreateContext(m_eglDisplay, m_eglConfig, m_shareContext, contextAttrs.constData());
if (m_eglContext == EGL_NO_CONTEXT && m_shareContext != EGL_NO_CONTEXT) {
m_shareContext = 0;
m_eglContext = eglCreateContext(m_eglDisplay, m_eglConfig, 0, contextAttrs.constData());
}
if (m_eglContext == EGL_NO_CONTEXT) {
qWarning("QEGLPlatformContext: Failed to create context: %x", eglGetError());
return;
}
static const bool printConfig = qEnvironmentVariableIntValue("QT_QPA_EGLFS_DEBUG");
if (printConfig) {
qDebug() << "Created context for format" << format << "with config:";
q_printEglConfig(m_eglDisplay, m_eglConfig);
}
// Cannot just call updateFormatFromGL() since it relies on virtuals. Defer it to initialize().
}
