/// <summary>
/// Constructs a new GraphicsContext with the specified GraphicsMode, version and flags, and attaches it to the specified window.
/// </summary>
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GraphicsContext.</param>
/// <param name="window">The OpenTK.Platform.IWindowInfo to attach the GraphicsContext to.</param>
/// <param name="major">The major version of the new GraphicsContext.</param>
/// <param name="minor">The minor version of the new GraphicsContext.</param>
/// <param name="flags">The GraphicsContextFlags for the GraphicsContext.</param>
/// <remarks>
/// Different hardware supports different flags, major and minor versions. Invalid parameters will be silently ignored.
/// </remarks>
public GraphicsContext(GraphicsMode mode, IWindowInfo window, int major, int minor, GraphicsContextFlags flags)
{
bool designMode = false;
if (mode == null && window == null)
{
designMode = true;
}
else if (mode == null)
{
throw new ArgumentNullException("mode", "Must be a valid GraphicsMode.");
}
else if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
// Silently ignore invalid major and minor versions.
if (major <= 0)
{
major = 1;
}
if (minor < 0)
{
minor = 0;
}
Debug.Print("Creating GraphicsContext.");
try
{
Debug.Indent();
Debug.Print("GraphicsMode: {0}", mode);
Debug.Print("IWindowInfo: {0}", window);
Debug.Print("GraphicsContextFlags: {0}", flags);
Debug.Print("Requested version: {0}.{1}", major, minor);
IGraphicsContext shareContext = null;
if (GraphicsContext.ShareContexts)
{
lock (context_lock)
{
// A small hack to create a shared context with the first available context.
foreach (WeakReference r in GraphicsContext.available_contexts.Values)
{
shareContext = (IGraphicsContext)r.Target;
break;
}
}
}
// Todo: Add a DummyFactory implementing IPlatformFactory.
if (designMode)
#if !IPHONE
{ implementation = new Platform.Dummy.DummyGLContext(); }
#else
{ implementation = Factory.Embedded.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags); }
#endif
else
{
switch ((flags & GraphicsContextFlags.Embedded) == GraphicsContextFlags.Embedded)
{
case false: implementation = Factory.Default.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags); break;
case true: implementation = Factory.Embedded.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags); break;
}
}
lock (context_lock)
{
available_contexts.Add((this as IGraphicsContextInternal).Context, new WeakReference(this));
}
}
/// <summary>
/// Constructs a new GraphicsContext from a pre-existing context created outside of OpenTK.
/// </summary>
/// <param name="handle">The handle of the existing context. This must be a valid, unique handle that is not known to OpenTK.</param>
/// <param name="window">This parameter is reserved.</param>
/// <param name="shareContext">This parameter is reserved.</param>
/// <param name="major">This parameter is reserved.</param>
/// <param name="minor">This parameter is reserved.</param>
/// <param name="flags">This parameter is reserved..</param>
public GraphicsContext(ContextHandle handle, IWindowInfo window, IGraphicsContext shareContext, int major, int minor, GraphicsContextFlags flags)
: this(handle, Platform.Utilities.CreateGetAddress(), Factory.Default.CreateGetCurrentGraphicsContext())
{
}
/// <summary>
/// Constructs a new GraphicsContext with the specified GraphicsMode, version and flags, and attaches it to the specified window.
/// </summary>
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GraphicsContext.</param>
/// <param name="window">The OpenTK.Platform.IWindowInfo to attach the GraphicsContext to.</param>
/// <param name="major">The major version of the new GraphicsContext.</param>
/// <param name="minor">The minor version of the new GraphicsContext.</param>
/// <param name="flags">The GraphicsContextFlags for the GraphicsContext.</param>
/// <remarks>
/// Different hardware supports different flags, major and minor versions. Invalid parameters will be silently ignored.
/// </remarks>
public GraphicsContext(GraphicsMode mode, IWindowInfo window, int major, int minor, GraphicsContextFlags flags)
{
lock (SyncRoot)
{
bool designMode = false;
if (mode == null && window == null)
{
designMode = true;
}
else if (mode == null)
{
throw new ArgumentNullException("mode", "Must be a valid GraphicsMode.");
}
else if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
// Silently ignore invalid major and minor versions.
if (major <= 0)
{
major = 1;
}
if (minor < 0)
{
minor = 0;
}
Debug.Print("Creating GraphicsContext.");
try
{
Debug.Indent();
Debug.Print("GraphicsMode: {0}", mode);
Debug.Print("IWindowInfo: {0}", window);
Debug.Print("GraphicsContextFlags: {0}", flags);
Debug.Print("Requested version: {0}.{1}", major, minor);
IGraphicsContext shareContext = shareContext = FindSharedContext();
// Todo: Add a DummyFactory implementing IPlatformFactory.
if (designMode)
{
implementation = new Platform.Dummy.DummyGLContext();
}
else
{
IPlatformFactory factory = null;
switch ((flags & GraphicsContextFlags.Embedded) == GraphicsContextFlags.Embedded)
{
case false: factory = Factory.Default; break;
case true: factory = Factory.Embedded; break;
}
// Note: this approach does not allow us to mix native and EGL contexts in the same process.
// This should not be a problem, as this use-case is not interesting for regular applications.
// Note 2: some platforms may not support a direct way of getting the current context
// (this happens e.g. with DummyGLContext). In that case, we use a slow fallback which
// iterates through all known contexts and checks if any is current (check GetCurrentContext
// declaration).
if (GetCurrentContext == null)
{
GetCurrentContext = factory.CreateGetCurrentGraphicsContext();
}
implementation = factory.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags);
}
AddContext(this);
}
finally
{
Debug.Unindent();
}
}
}
/// <summary>
/// Constructs a new GraphicsContext with the specified GraphicsMode, version and flags, and attaches it to the specified window.
/// </summary>
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GraphicsContext.</param>
/// <param name="window">The OpenTK.Platform.IWindowInfo to attach the GraphicsContext to.</param>
/// <param name="shareContext">The GraphicsContext to share resources with, or null for explicit non-sharing.</param>
/// <param name="major">The major version of the new GraphicsContext.</param>
/// <param name="minor">The minor version of the new GraphicsContext.</param>
/// <param name="flags">The GraphicsContextFlags for the GraphicsContext.</param>
/// <remarks>
/// Different hardware supports different flags, major and minor versions. Invalid parameters will be silently ignored.
/// </remarks>
public GraphicsContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, int major, int minor, GraphicsContextFlags flags)
{
lock (SyncRoot)
{
bool designMode = false;
if (mode == null && window == null)
{
designMode = true;
}
else if (mode == null)
{
throw new ArgumentNullException("mode", "Must be a valid GraphicsMode.");
}
else if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
// Silently ignore invalid major and minor versions.
if (major <= 0)
{
major = 1;
}
if (minor < 0)
{
minor = 0;
}
// Angle needs an embedded context
var use_angle_flag = GraphicsContextFlags.Angle
| GraphicsContextFlags.AngleD3D9
| GraphicsContextFlags.AngleD3D11
| GraphicsContextFlags.AngleOpenGL;
var use_angle = false;
if ((flags & use_angle_flag) != 0)
{
flags |= GraphicsContextFlags.Embedded;
use_angle = true;
}
Debug.Print("Creating GraphicsContext.");
try
{
Debug.Indent();
Debug.Print("GraphicsMode: {0}", mode);
Debug.Print("IWindowInfo: {0}", window);
Debug.Print("GraphicsContextFlags: {0}", flags);
Debug.Print("Requested version: {0}.{1}", major, minor);
// Todo: Add a DummyFactory implementing IPlatformFactory.
if (designMode)
{
implementation = new Platform.Dummy.DummyGLContext();
}
else
{
IPlatformFactory factory = null;
switch ((flags & GraphicsContextFlags.Embedded) == GraphicsContextFlags.Embedded)
{
case false:
factory = Factory.Default;
break;
case true:
factory = use_angle ? Factory.Angle : Factory.Embedded;
break;
}
GetCurrentContext = factory.CreateGetCurrentGraphicsContext();
implementation = factory.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags);
handle_cached = ((IGraphicsContextInternal)implementation).Context;
factory.RegisterResource(this);
}
AddContext(this);
}
finally
{
Debug.Unindent();
}
}
}
/// <summary>
/// Constructs a new GraphicsContext with the specified GraphicsMode, version and flags, and attaches it to the specified window. A dummy context will be created if both
/// the handle and the window are null.
/// </summary>
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GraphicsContext.</param>
/// <param name="window">The OpenTK.Platform.IWindowInfo to attach the GraphicsContext to.</param>
/// <param name="shareContext">The GraphicsContext to share resources with, or null for explicit non-sharing.</param>
/// <param name="major">The major version of the new GraphicsContext.</param>
/// <param name="minor">The minor version of the new GraphicsContext.</param>
/// <param name="flags">The GraphicsContextFlags for the GraphicsContext.</param>
/// <remarks>
/// Different hardware supports different flags, major and minor versions. Invalid parameters will be silently ignored.
/// </remarks>
public GraphicsContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, int major, int minor, GraphicsContextFlags flags)
{
bool success = false;
string errMsg = null;
lock (SyncRoot)
{
bool designMode = false;
if (mode == null && window == null)
{
designMode = true;
}
else if (mode == null)
{
throw new ArgumentNullException("mode", "Must be a valid GraphicsMode.");
}
else if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
// Silently ignore invalid major and minor versions.
if (major <= 0)
{
major = 1;
}
if (minor < 0)
{
minor = 0;
}
// Angle needs an embedded context
const GraphicsContextFlags useAngleFlag = GraphicsContextFlags.Angle
| GraphicsContextFlags.AngleD3D9
| GraphicsContextFlags.AngleD3D11
| GraphicsContextFlags.AngleOpenGL;
flags = useAngleFlag;
var useAngle = false;
if ((flags & useAngleFlag) != 0)
{
flags |= GraphicsContextFlags.Embedded;
useAngle = true;
}
Debug.WriteLine("Creating GraphicsContext.");
try
{
Debug.WriteLine("");
Debug.WriteLine($"GraphicsMode: {mode}");
Debug.WriteLine($"IWindowInfo: {window}");
Debug.WriteLine($"GraphicsContextFlags: {flags}");
Debug.WriteLine($"Requested version: {major}.{minor}");
// Todo: Add a DummyFactory implementing IPlatformFactory.
if (designMode)
{
_implementation = new Platform.Dummy.DummyGLContext();
}
else
{
IPlatformFactory factory = null;
switch ((flags & GraphicsContextFlags.Embedded) == GraphicsContextFlags.Embedded)
{
case false:
factory = Factory.Default;
break;
case true:
factory = useAngle ? Factory.Angle : Factory.Embedded;
break;
}
// Note: this approach does not allow us to mix native and EGL contexts in the same process.
// This should not be a problem, as this use-case is not interesting for regular applications.
// Note 2: some platforms may not support a direct way of getting the current context
// (this happens e.g. with DummyGLContext). In that case, we use a slow fallback which
// iterates through all known contexts and checks if any is current (check GetCurrentContext
// declaration).
if (GetCurrentContext == null)
{
GetCurrentContext = factory.CreateGetCurrentGraphicsContext();
}
_implementation = factory.CreateGLContext(mode, window, shareContext, DirectRendering, major, minor, flags);
_handle_cached = ((IGraphicsContextInternal)_implementation).Context;
factory.RegisterResource(this);
}
AddContext(this);
success = true;
}
catch (Exception ex)
{
//some exception err here
//we write a log file
}
finally
{
}
}
if (!success)
{
ContextCreationError?.Invoke(null, new GraphicContextCreationErrorArgs(errMsg));
}
}
private void CreateContext(bool direct, IGraphicsContext source)
{
lock (GraphicsContext.SyncRoot)
GraphicsContext.available_contexts.Add(this.Context, new WeakReference((object)this));
}
private GraphicsContext(ContextHandle handle)
{
this.implementation = (IGraphicsContext) new DummyGLContext(handle);
lock (GraphicsContext.SyncRoot)
GraphicsContext.available_contexts.Add((this.implementation as IGraphicsContextInternal).Context, new WeakReference((object)this));
}
/// <summary>
/// Constructs a new GraphicsContext with the specified GraphicsMode, version and flags, and attaches it to the specified window.
/// </summary>
/// <param name="mode">The OpenTK.Graphics.GraphicsMode of the GraphicsContext.</param>
/// <param name="window">The OpenTK.Platform.IWindowInfo to attach the GraphicsContext to.</param>
/// <param name="major">The major version of the new GraphicsContext.</param>
/// <param name="minor">The minor version of the new GraphicsContext.</param>
/// <param name="flags">The GraphicsContextFlags for the GraphicsContext.</param>
/// <remarks>
/// Different hardware supports different flags, major and minor versions. Invalid parameters will be silently ignored.
/// </remarks>
public GraphicsContext(GraphicsMode mode, IWindowInfo window, int major, int minor, GraphicsContextFlags flags)
{
lock (SyncRoot)
{
bool designMode = false;
if (mode == null && window == null)
{
designMode = true;
}
else if (mode == null)
{
throw new ArgumentNullException("mode", "Must be a valid GraphicsMode.");
}
else if (window == null)
{
throw new ArgumentNullException("window", "Must point to a valid window.");
}
// Silently ignore invalid major and minor versions.
if (major <= 0)
{
major = 1;
}
if (minor < 0)
{
minor = 0;
}
Debug.Print("Creating GraphicsContext.");
try
{
Debug.Indent();
Debug.Print("GraphicsMode: {0}", mode);
Debug.Print("IWindowInfo: {0}", window);
Debug.Print("GraphicsContextFlags: {0}", flags);
Debug.Print("Requested version: {0}.{1}", major, minor);
IGraphicsContext shareContext = shareContext = FindSharedContext();
// Todo: Add a DummyFactory implementing IPlatformFactory.
if (designMode)
{
implementation = new Platform.Dummy.DummyGLContext();
}
else
{
IPlatformFactory factory = null;
switch ((flags & GraphicsContextFlags.Embedded) == GraphicsContextFlags.Embedded)
{
case false: factory = Factory.Default; break;
case true: factory = Factory.Embedded; break;
}
implementation = factory.CreateGLContext(mode, window, shareContext, direct_rendering, major, minor, flags);
// Note: this approach does not allow us to mix native and EGL contexts in the same process.
// This should not be a problem, as this use-case is not interesting for regular applications.
if (GetCurrentContext == null)
{
GetCurrentContext = factory.CreateGetCurrentGraphicsContext();
}
}
available_contexts.Add((this as IGraphicsContextInternal).Context, new WeakReference(this));
}
finally
{
Debug.Unindent();
}
}
}