bool vsync = true; // Default vsync value is defined as 1 (true) in EGL.
#endregion
#region Constructors
public EglContext(GraphicsMode mode, EglWindowInfo window, IGraphicsContext sharedContext,
int major, int minor, GraphicsContextFlags flags)
{
if (mode == null)
throw new ArgumentNullException("mode");
if (window == null)
throw new ArgumentNullException("window");
EglContext shared = (EglContext)sharedContext;
int dummy_major, dummy_minor;
if (!Egl.Initialize(window.Display, out dummy_major, out dummy_minor))
throw new GraphicsContextException(String.Format("Failed to initialize EGL, error {0}.", Egl.GetError()));
WindowInfo = window;
Mode = new EglGraphicsMode().SelectGraphicsMode(mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples, mode.AccumulatorFormat, mode.Buffers, mode.Stereo);
if (!Mode.Index.HasValue)
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
EGLConfig config = new EGLConfig(mode.Index.Value);
if (window.Surface.Handle == EGLSurface.None.Handle)
window.CreateWindowSurface(config);
int[] attrib_list = new int[] { Egl.CONTEXT_CLIENT_VERSION, major, Egl.NONE };
HandleAsEGLContext = Egl.CreateContext(window.Display, config, shared != null ? shared.HandleAsEGLContext : EGLContext.None, attrib_list);
MakeCurrent(window);
}
public static extern bool QueryContext(EGLDisplay dpy, EGLContext ctx, int attribute, out int value);
public static extern bool MakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
public static extern bool DestroyContext(EGLDisplay dpy, EGLContext ctx);
public static EGLContext CreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, int[] attrib_list)
{
IntPtr ptr = eglCreateContext(dpy, config, share_context, attrib_list);
if (ptr == IntPtr.Zero)
throw new GraphicsContextException(String.Format("Failed to create EGL context, error: {0}.", Egl.GetError()));
return ptr;
}
static extern IntPtr eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, int[] attrib_list);
public static extern bool QueryContext(EGLDisplay dpy, EGLContext ctx, int attribute, out int value);
public static extern bool MakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
public static extern bool DestroyContext(EGLDisplay dpy, EGLContext ctx);
private static extern IntPtr eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context,
int[] attrib_list);
