public void InitializeDisplay()
{
if (eglDisplay != null && eglDisplay != EGL10.EglNoDisplay)
{
return;
}
IEGL10 egl = EGLContext.EGL.JavaCast <IEGL10> ();
if (eglDisplay == null)
{
eglDisplay = egl.EglGetDisplay(EGL10.EglDefaultDisplay);
}
if (eglDisplay == EGL10.EglNoDisplay)
{
throw EglException.GenerateException("EglGetDisplay == EGL10.EglNoDisplay", egl, null);
}
int[] version = new int[2];
if (!egl.EglInitialize(eglDisplay, version))
{
throw EglException.GenerateException("EglInitialize", egl, null);
}
}
private void CreateEGLContext()
{
ExEnLog.WriteLine("ExEnAndroidSurfaceView.CreateEGLContext Begin");
// Assumes lockObject is locked
lostEglContext = false;
egl = EGLContext.EGL.JavaCast<IEGL10>();
eglDisplay = egl.EglGetDisplay(EGL10Consts.EglDefaultDisplay);
if(eglDisplay == EGL10Consts.EglNoDisplay)
throw new ExEnSurfaceException("Could not get EGL display");
int[] version = new int[2];
if(!egl.EglInitialize(eglDisplay, version))
throw new ExEnSurfaceException(AddEGLError("Could not initialize EGL display"));
ExEnLog.WriteLine("EGL Version: " + version[0] + "." + version[1]);
// TODO: allow GraphicsDeviceManager to specify a frame buffer configuration
// TODO: test this configuration works on many devices:
int[] configAttribs = new int[] {
//EGL10Consts.EglRedSize, 5,
//EGL10Consts.EglGreenSize, 6,
//EGL10Consts.EglBlueSize, 5,
//EGL10Consts.EglAlphaSize, 0,
//EGL10Consts.EglDepthSize, 4,
//EGL10Consts.EglStencilSize, 0,
EGL10Consts.EglNone };
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if(!egl.EglChooseConfig(eglDisplay, configAttribs, configs, 1, numConfigs))
throw new ExEnSurfaceException(AddEGLError("Could not get EGL config"));
if(numConfigs[0] == 0)
throw new ExEnSurfaceException("No valid EGL configs found");
eglConfig = configs[0];
const int EglContextClientVersion = 0x3098;
int[] contextAttribs = new int[] { EglContextClientVersion, 1, EGL10Consts.EglNone };
eglContext = egl.EglCreateContext(eglDisplay, eglConfig, EGL10Consts.EglNoContext, contextAttribs);
if(eglContext == null || eglContext == EGL10Consts.EglNoContext)
{
eglContext = null;
throw new ExEnSurfaceException(AddEGLError("Could not create EGL context"));
}
eglContextAvailable = true;
ExEnLog.WriteLine("ExEnAndroidSurfaceView.CreateEGLContext End");
}