/// <summary>
/// This is called immediately after the surface is first created.
/// </summary>
/// <param name="holder">
/// The SurfaceHolder whose surface is being created.
/// </param>
public void SurfaceCreated(ISurfaceHolder holder)
{
// Problem with static constructors? Ensure manual initialization
Egl.Initialize(); Gl.Initialize();
// Get actual native window handle
_NativeWindowHandle = ANativeWindow_fromSurface(JNIEnv.Handle, holder.Surface.Handle);
// Create device context
_DeviceContext = DeviceContext.Create(IntPtr.Zero, _NativeWindowHandle);
_DeviceContext.IncRef();
// Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
DevicePixelFormat controlReqFormat = new DevicePixelFormat();
controlReqFormat.RgbaUnsigned = true;
controlReqFormat.RenderWindow = true;
controlReqFormat.ColorBits = 24;
//controlReqFormat.DepthBits = (int)DepthBits;
//controlReqFormat.StencilBits = (int)StencilBits;
//controlReqFormat.MultisampleBits = (int)MultisampleBits;
//controlReqFormat.DoubleBuffer = true;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException("unable to find a suitable pixel format");
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
// Create OpenGL context using compatibility profile
if ((_RenderContext = _DeviceContext.CreateContext(IntPtr.Zero)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create render context");
}
// Make context current
if (_DeviceContext.MakeCurrent(_RenderContext) == false)
{
throw new InvalidOperationException("unable to make context current");
}
// Raise relative event
OnContextCreated();
StartRendering(30.0f);
}
/// <summary>
/// Create the GlControl context, eventually shared with others.
/// </summary>
protected void CreateDesktopContext()
{
if (_RenderContext != IntPtr.Zero)
{
throw new InvalidOperationException("context already created");
}
IntPtr sharingContext = IntPtr.Zero;
bool shareResources = ContextSharing == ContextSharingOption.OwnContext && ContextSharingGroup != null;
if (shareResources)
{
List <IntPtr> sharingContextes;
if (_SharingGroups.TryGetValue(ContextSharingGroup, out sharingContextes))
{
sharingContext = sharingContextes.Count > 0 ? sharingContextes[0] : IntPtr.Zero;
}
else
{
_SharingGroups.Add(ContextSharingGroup, new List <IntPtr>());
}
}
if (Gl.PlatformExtensions.CreateContext_ARB)
{
List <int> attributes = new List <int>();
uint contextProfile = 0, contextFlags = 0;
bool debuggerAttached = Debugger.IsAttached;
#region WGL_ARB_create_context|GLX_ARB_create_context
// The default values for WGL_CONTEXT_MAJOR_VERSION_ARB and WGL_CONTEXT_MINOR_VERSION_ARB are 1 and 0 respectively. In this
// case, implementations will typically return the most recent version of OpenGL they support which is backwards compatible with OpenGL 1.0
// (e.g. 3.0, 3.1 + GL_ARB_compatibility, or 3.2 compatibility profile) [from WGL_ARB_create_context spec]
Debug.Assert(Wgl.CONTEXT_MAJOR_VERSION_ARB == Glx.CONTEXT_MAJOR_VERSION_ARB);
Debug.Assert(Wgl.CONTEXT_MINOR_VERSION_ARB == Glx.CONTEXT_MINOR_VERSION_ARB);
if (ContextVersion != null)
{
attributes.AddRange(new int[] {
Wgl.CONTEXT_MAJOR_VERSION_ARB, ContextVersion.Major,
Wgl.CONTEXT_MINOR_VERSION_ARB, ContextVersion.Minor
});
}
else
{
// Note: this shouldn't be necessary since defaults are defined. However, on certains drivers this arguments are
// required for specifying CONTEXT_FLAGS_ARB and CONTEXT_PROFILE_MASK_ARB attributes:
// - Required by NVIDIA 266.72 on GeForce GT 540M on Windows 7 x64
attributes.AddRange(new int[] {
Wgl.CONTEXT_MAJOR_VERSION_ARB, 1,
Wgl.CONTEXT_MINOR_VERSION_ARB, 0
});
}
if ((_DebugContextBit == AttributePermission.Enabled) || (debuggerAttached && _DebugContextBit == AttributePermission.EnabledInDebugger))
{
Debug.Assert(Wgl.CONTEXT_DEBUG_BIT_ARB == Glx.CONTEXT_DEBUG_BIT_ARB);
contextFlags |= Wgl.CONTEXT_DEBUG_BIT_ARB;
}
if ((_ForwardCompatibleContextBit == AttributePermission.Enabled) || (debuggerAttached && _ForwardCompatibleContextBit == AttributePermission.EnabledInDebugger))
{
Debug.Assert(Wgl.CONTEXT_FORWARD_COMPATIBLE_BIT_ARB == Glx.CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
contextFlags |= Wgl.CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
}
#endregion
#region WGL_ARB_create_context_profile|GLX_ARB_create_context_profile
if (Gl.PlatformExtensions.CreateContextProfile_ARB)
{
switch (_ProfileType)
{
case ProfileType.Core:
Debug.Assert(Wgl.CONTEXT_CORE_PROFILE_BIT_ARB == Glx.CONTEXT_CORE_PROFILE_BIT_ARB);
contextProfile |= Wgl.CONTEXT_CORE_PROFILE_BIT_ARB;
break;
case ProfileType.Compatibility:
Debug.Assert(Wgl.CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB == Glx.CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB);
contextProfile |= Wgl.CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
break;
}
}
#endregion
#region WGL_ARB_create_context_robustness|GLX_ARB_create_context_robustness
if (Gl.PlatformExtensions.CreateContextRobustness_ARB)
{
if ((_RobustContextBit == AttributePermission.Enabled) || (debuggerAttached && _RobustContextBit == AttributePermission.EnabledInDebugger))
{
Debug.Assert(Wgl.CONTEXT_ROBUST_ACCESS_BIT_ARB == Glx.CONTEXT_ROBUST_ACCESS_BIT_ARB);
contextFlags |= Wgl.CONTEXT_ROBUST_ACCESS_BIT_ARB;
}
}
#endregion
Debug.Assert(Wgl.CONTEXT_FLAGS_ARB == Glx.CONTEXT_FLAGS_ARB);
if (contextFlags != 0)
{
attributes.AddRange(new int[] { Wgl.CONTEXT_FLAGS_ARB, unchecked ((int)contextFlags) });
}
Debug.Assert(Wgl.CONTEXT_PROFILE_MASK_ARB == Glx.CONTEXT_PROFILE_MASK_ARB);
Debug.Assert(contextProfile == 0 || Gl.PlatformExtensions.CreateContextProfile_ARB);
if (contextProfile != 0)
{
attributes.AddRange(new int[] { Wgl.CONTEXT_PROFILE_MASK_ARB, unchecked ((int)contextProfile) });
}
attributes.Add(0);
if ((_RenderContext = _DeviceContext.CreateContextAttrib(sharingContext, attributes.ToArray())) == IntPtr.Zero)
{
throw new InvalidOperationException(String.Format("unable to create render context ({0})", Gl.GetError()));
}
}
else
{
// Create OpenGL context using compatibility profile
if ((_RenderContext = _DeviceContext.CreateContext(sharingContext)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create render context");
}
}
// Allow other GlControl instances to reuse this GlControl context
if (shareResources)
{
if (_SharingControls.ContainsKey(ContextSharingGroup))
{
throw new InvalidOperationException(String.Format("another GlControl has created sharing group {0}", ContextSharingGroup));
}
_SharingControls.Add(ContextSharingGroup, this);
}
// Allow other GlControl instances to share resources with this context
if (shareResources == true)
{
List <IntPtr> sharingContextes;
// Get the list previously created
_SharingGroups.TryGetValue(ContextSharingGroup, out sharingContextes);
// ...and register this context among the others
sharingContextes.Add(_RenderContext);
}
}
