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#include "qwaylandglcontext.h"

#include "qwaylanddisplay.h"
#include "qwaylandwindow.h"
#include "qwaylandeglwindow.h"

#include <QtPlatformSupport/private/qeglconvenience_p.h>

#include <QtGui/QPlatformGLContext>
#include <QtGui/QSurfaceFormat>
#include <QtCore/QMutex>

QWaylandGLContext::QWaylandGLContext(EGLDisplay eglDisplay, const QSurfaceFormat &format, QPlatformGLContext *share)
    : QPlatformGLContext()
    , m_eglDisplay(eglDisplay)
    , m_config(q_configFromGLFormat(m_eglDisplay, format, true))
    , m_format(q_glFormatFromConfig(m_eglDisplay, m_config))
{
    EGLContext shareEGLContext = share ? static_cast<QWaylandGLContext *>(share)->eglContext() : EGL_NO_CONTEXT;

    eglBindAPI(EGL_OPENGL_ES_API);

    QVector<EGLint> eglContextAttrs;
    eglContextAttrs.append(EGL_CONTEXT_CLIENT_VERSION);
    eglContextAttrs.append(2);
    eglContextAttrs.append(EGL_NONE);

    m_context = eglCreateContext(m_eglDisplay, m_config, shareEGLContext, eglContextAttrs.constData());
}

QWaylandGLContext::~QWaylandGLContext()
{
    eglDestroyContext(m_eglDisplay, m_context);
}

bool QWaylandGLContext::makeCurrent(QPlatformSurface *surface)
{
    EGLSurface eglSurface = static_cast<QWaylandEglWindow *>(surface)->eglSurface();
    return eglMakeCurrent(m_eglDisplay, eglSurface, eglSurface, m_context);
}

void QWaylandGLContext::doneCurrent()
{
    eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
}

void QWaylandGLContext::swapBuffers(QPlatformSurface *surface)
{
    EGLSurface eglSurface = static_cast<QWaylandEglWindow *>(surface)->eglSurface();
    eglSwapBuffers(m_eglDisplay, eglSurface);
}

void (*QWaylandGLContext::getProcAddress(const QByteArray &procName)) ()
{
    return eglGetProcAddress(procName.constData());
}

EGLConfig QWaylandGLContext::eglConfig() const
{
    return m_config;
}