public override void MakeCurrent(IWindowInfo window)
{
// Ignore 'window', unless it actually is an EGL window. In other words,
// trying to make the EglContext current on a non-EGL window will do,
// nothing (the EglContext will remain current on the previous EGL window
// or the window it was constructed on (which may not be EGL)).
if (window != null)
{
if (window is EglWindowInfo)
{
WindowInfo = (EglWindowInfo)window;
}
#if !ANDROID
else if (window is IAngleWindowInfoInternal)
{
WindowInfo = ((IAngleWindowInfoInternal)window).EglWindowInfo;
}
#endif
if (!Egl.MakeCurrent(WindowInfo.Display, WindowInfo.Surface, WindowInfo.Surface, HandleAsEGLContext))
{
throw new GraphicsContextException(string.Format("Failed to make context {0} current. Error: {1}", Handle, Egl.GetError()));
}
}
else
{
Egl.MakeCurrent(WindowInfo.Display, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
}
}
private int swap_interval = 1; // Default interval is defined as 1 in EGL.
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 = GetSharedEglContext(sharedContext);
WindowInfo = window;
// Select an EGLConfig that matches the desired mode. We cannot use the 'mode'
// parameter directly, since it may have originated on a different system (e.g. GLX)
// and it may not support the desired renderer.
Renderable = RenderableFlags.GL;
if ((flags & GraphicsContextFlags.Embedded) != 0)
{
switch (major)
{
case 3:
Renderable = RenderableFlags.ES3;
break;
case 2:
Renderable = RenderableFlags.ES2;
break;
default:
Renderable = RenderableFlags.ES;
break;
}
}
RenderApi api = (Renderable & RenderableFlags.GL) != 0 ? RenderApi.GL : RenderApi.ES;
Debug.Print("[EGL] Binding {0} rendering API.", api);
if (!Egl.BindAPI(api))
{
Debug.Print("[EGL] Failed to bind rendering API. Error: {0}", Egl.GetError());
}
bool offscreen = (flags & GraphicsContextFlags.Offscreen) != 0;
SurfaceType surfaceType = offscreen
? SurfaceType.PBUFFER_BIT
: SurfaceType.WINDOW_BIT;
Mode = new EglGraphicsMode().SelectGraphicsMode(surfaceType,
window.Display, mode.ColorFormat, mode.Depth, mode.Stencil,
mode.Samples, mode.AccumulatorFormat, mode.Buffers, mode.Stereo,
Renderable);
if (!Mode.Index.HasValue)
{
throw new GraphicsModeException("Invalid or unsupported GraphicsMode.");
}
IntPtr config = Mode.Index.Value;
if (window.Surface == IntPtr.Zero)
{
if (!offscreen)
{
window.CreateWindowSurface(config);
}
else
{
window.CreatePbufferSurface(config);
}
}
int[] attribList = { Egl.CONTEXT_CLIENT_VERSION, major, Egl.NONE };
var shareContext = shared?.HandleAsEGLContext ?? IntPtr.Zero;
HandleAsEGLContext = Egl.CreateContext(window.Display, config, shareContext, attribList);
GraphicsContextFlags = flags;
}
public void MakeCurrent(EGLSurface surface)
{
Egl.MakeCurrent(Display, surface, surface, EglContext.HandleAsEGLContext);
}
public override void SwapBuffers()
{
if (!Egl.SwapBuffers(WindowInfo.Display, WindowInfo.Surface))
{
throw new GraphicsContextException(string.Format("Failed to swap buffers for context {0} current. Error: {1}", Handle, Egl.GetError()));
}
}
public override IGraphicsContext CreateGLContext(ContextHandle handle, IWindowInfo window, IGraphicsContext shareContext, bool directRendering, int major, int minor, GraphicsContextFlags flags)
{
X11WindowInfo x11_win = (X11WindowInfo)window;
EglWindowInfo egl_win = new osuTK.Platform.Egl.EglWindowInfo(x11_win.Handle, Egl.GetDisplay(x11_win.Display));
return(new EglUnixContext(handle, egl_win, shareContext, major, minor, flags));
}
public GraphicsMode SelectGraphicsMode(SurfaceType surfaceType,
IntPtr display, ColorFormat color, int depth, int stencil,
int samples, ColorFormat accum, int buffers, bool stereo,
RenderableFlags renderableFlags)
{
IntPtr[] configs = new IntPtr[1];
int[] attribList = new int[]
{
Egl.SURFACE_TYPE, (int)surfaceType,
Egl.RENDERABLE_TYPE, (int)renderableFlags,
Egl.RED_SIZE, color.Red,
Egl.GREEN_SIZE, color.Green,
Egl.BLUE_SIZE, color.Blue,
Egl.ALPHA_SIZE, color.Alpha,
Egl.DEPTH_SIZE, depth > 0 ? depth : 0,
Egl.STENCIL_SIZE, stencil > 0 ? stencil : 0,
Egl.SAMPLE_BUFFERS, samples > 0 ? 1 : 0,
Egl.SAMPLES, samples > 0 ? samples : 0,
Egl.NONE,
};
int numConfigs;
if (!Egl.ChooseConfig(display, attribList, configs, configs.Length, out numConfigs) || numConfigs == 0)
{
throw new GraphicsModeException(String.Format("Failed to retrieve GraphicsMode, error {0}", Egl.GetError()));
}
// See what we really got
IntPtr activeConfig = configs[0];
int r, g, b, a;
Egl.GetConfigAttrib(display, activeConfig, Egl.RED_SIZE, out r);
Egl.GetConfigAttrib(display, activeConfig, Egl.GREEN_SIZE, out g);
Egl.GetConfigAttrib(display, activeConfig, Egl.BLUE_SIZE, out b);
Egl.GetConfigAttrib(display, activeConfig, Egl.ALPHA_SIZE, out a);
int d, s;
Egl.GetConfigAttrib(display, activeConfig, Egl.DEPTH_SIZE, out d);
Egl.GetConfigAttrib(display, activeConfig, Egl.STENCIL_SIZE, out s);
int sampleBuffers;
Egl.GetConfigAttrib(display, activeConfig, Egl.SAMPLES, out sampleBuffers);
Egl.GetConfigAttrib(display, activeConfig, Egl.SAMPLES, out samples);
return(new GraphicsMode(activeConfig, new ColorFormat(r, g, b, a), d, s, sampleBuffers > 0 ? samples : 0, 0, 2, false));
}
//public void CreatePixmapSurface(EGLConfig config)
//{
// Surface = Egl.CreatePixmapSurface(Display, config, Handle, null);
//}
public void CreatePbufferSurface(IntPtr config)
{
int[] attribs = new int[] { Egl.NONE };
Surface = Egl.CreatePbufferSurface(Display, config, attribs);
if (Surface == IntPtr.Zero)
{
throw new GraphicsContextException(String.Format(
"[EGL] Failed to create pbuffer surface, error {0}.", Egl.GetError()));
}
}
public void CreateWindowSurface(IntPtr config)
{
Surface = Egl.CreateWindowSurface(Display, config, Handle, IntPtr.Zero);
if (Surface == IntPtr.Zero)
{
throw new GraphicsContextException(String.Format(
"[EGL] Failed to create window surface, error {0}.", Egl.GetError()));
}
}
public EglWindowInfo(IntPtr handle, IntPtr display, IntPtr surface)
{
Handle = handle;
Surface = surface;
if (display == IntPtr.Zero)
{
display = Egl.GetDisplay(IntPtr.Zero);
}
Display = display;
int dummyMajor, dummyMinor;
if (!Egl.Initialize(Display, out dummyMajor, out dummyMinor))
{
throw new GraphicsContextException(String.Format("Failed to initialize EGL, error {0}.", Egl.GetError()));
}
}
public void CreatePbufferSurface(IntPtr config, int width, int height, out IntPtr bufferSurface)
{
int[] attribs = new int[]
{
Egl.WIDTH, width,
Egl.HEIGHT, height,
Egl.TEXTURE_TARGET, Egl.TEXTURE_2D,
Egl.TEXTURE_FORMAT, Egl.TEXTURE_RGBA,
Egl.NONE
};
bufferSurface = Egl.CreatePbufferSurface(Display, config, attribs);
if (bufferSurface == IntPtr.Zero)
{
throw new GraphicsContextException(String.Format(
"[EGL] Failed to create pbuffer surface, error {0}.", Egl.GetError()));
}
}
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);
}
