/// <summary>
/// Swap buffers
/// </summary>
public void SwapBuffers()
{
WinEGL.SwapBuffers(m_Display, m_Surface);
}
/// <summary>
/// Try initialise EGL on a window.
/// </summary>
/// <param name="winhandle"></param>
/// <param name="display"></param>
/// <param name="window"></param>
/// <returns></returns>
public void InitialiseEGLOnWindow(IntPtr winhandle)
{
m_Display = WinEGL.GetDisplay(WinEGL.DEFAULT_DISPLAY);
int major, minor;
if (!WinEGL.Initialize(m_Display, out major, out minor))
{
int error = WinEGL.GetError();
throw new InvalidOperationException("Could not initialise graphics. Error code = " + error);
}
WinEGL.BindAPI(WinEGL.OPENGL_ES_API);
if (WinEGL.GetError() != WinEGL.SUCCESS)
{
throw new InvalidOperationException("Could not bind to opengl ES");
}
int[] configAttributes = new int[]
{
WinEGL.RED_SIZE, 8,
WinEGL.GREEN_SIZE, 8,
WinEGL.BLUE_SIZE, 8,
WinEGL.ALPHA_SIZE, 8,
WinEGL.DEPTH_SIZE, 24,
WinEGL.STENCIL_SIZE, 8,
WinEGL.SAMPLE_BUFFERS, WinEGL.DONT_CARE,
WinEGL.NONE
};
IntPtr config;
int configCount;
if (!WinEGL.ChooseConfig(m_Display, configAttributes, out config, 1, out configCount) || (configCount != 1))
{
throw new InvalidOperationException("Could not choose config");
}
int[] surfaceAttributes = new int[] {
WinEGL.NONE,
WinEGL.NONE
};
m_Surface = WinEGL.CreateWindowSurface(m_Display, config, winhandle, surfaceAttributes);
if (m_Surface == IntPtr.Zero)
{
WinEGL.GetError();
m_Surface = WinEGL.CreateWindowSurface(m_Display, config, IntPtr.Zero, null);
}
if (WinEGL.GetError() != WinEGL.SUCCESS)
{
throw new InvalidOperationException("Could not create window surface");
}
int[] contextAttributes = new int[]
{
WinEGL.CONTEXT_CLIENT_VERSION, 2, WinEGL.NONE
};
IntPtr context = WinEGL.CreateContext(m_Display, config, IntPtr.Zero, contextAttributes);
if (WinEGL.GetError() != WinEGL.SUCCESS)
{
throw new InvalidOperationException("Could not create context");
}
WinEGL.MakeCurrent(m_Display, m_Surface, m_Surface, context);
if (WinEGL.GetError() != WinEGL.SUCCESS)
{
throw new InvalidOperationException("Could not make surface current");
}
// turn off vsync.
WinEGL.SwapInterval(m_Display, 0);
}