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* Platform/X11/X11GLContext.cs: Added workaround for buggy Amd linux drivers. Added "None" to context attributes, as specified by the specs.

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This commit is contained in:
the_fiddler 2009-03-20 23:16:52 +00:00
parent f1e0f2c8de
commit 7eb149fa7c
1 changed files with 30 additions and 13 deletions
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43
Source/OpenTK/Platform/X11/X11GLContext.cs
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@ -10,7 +10,6 @@ using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using OpenTK.Graphics.OpenGL;
using OpenTK.Graphics;
namespace OpenTK.Platform.X11
@ -59,7 +58,7 @@ namespace OpenTK.Platform.X11
if (!glx_loaded)
{
Debug.WriteLine("Loading GLX extensions.");
Debug.WriteLine("Creating temporary context to load GLX extensions.");
// Create a temporary context to obtain the necessary function pointers.
XVisualInfo visual = currentWindow.VisualInfo;
@ -71,7 +70,7 @@ namespace OpenTK.Platform.X11
{
Glx.LoadAll();
Glx.MakeCurrent(currentWindow.Display, IntPtr.Zero, IntPtr.Zero);
Glx.DestroyContext(currentWindow.Display, ctx);
//Glx.DestroyContext(currentWindow.Display, ctx);
glx_loaded = true;
}
}
@ -79,9 +78,12 @@ namespace OpenTK.Platform.X11
// Try using the new context creation method. If it fails, fall back to the old one.
// For each of these methods, we try two times to create a context:
// one with the "direct" flag intact, the other with the flag inversed.
if (Glx.Delegates.glXCreateContextAttribsARB != null)
// HACK: It seems that Catalyst 9.1 - 9.4 on Linux have problems with contexts created through
// GLX_ARB_create_context, including hideous input lag, no vsync and other. Use legacy context
// creation if the user doesn't request a 3.0+ context.
if ((major * 10 + minor >= 30) && Glx.Delegates.glXCreateContextAttribsARB != null)
{
Debug.WriteLine("Using GLX_ARB_create_context...");
Debug.Write("Using GLX_ARB_create_context... ");
unsafe
{
@ -102,13 +104,22 @@ namespace OpenTK.Platform.X11
attributes.Add((int)ArbCreateContext.Flags);
attributes.Add((int)flags);
}
attributes.Add(0);
context = new ContextHandle(Glx.Arb.CreateContextAttribs(currentWindow.Display, *fbconfigs,
shareHandle.Handle, direct, attributes.ToArray()));
if (context == ContextHandle.Zero)
{
Debug.Write(String.Format("failed. Trying direct: {0}... ", !direct));
context = new ContextHandle(Glx.Arb.CreateContextAttribs(currentWindow.Display, *fbconfigs,
shareHandle.Handle, !direct, attributes.ToArray()));
}
if (context == ContextHandle.Zero)
Debug.WriteLine("failed.");
else
Debug.WriteLine("success!");
Functions.XFree((IntPtr)fbconfigs);
}
@ -117,19 +128,25 @@ namespace OpenTK.Platform.X11
if (context == ContextHandle.Zero)
{
Debug.WriteLine("Using legacy context creation.");
Debug.Write("Using legacy context creation... ");
XVisualInfo info = currentWindow.VisualInfo; // Cannot pass a Property by reference.
context = new ContextHandle(Glx.CreateContext(currentWindow.Display, ref info, shareHandle.Handle, direct));
if (context == ContextHandle.Zero)
{
Debug.WriteLine(String.Format("failed. Trying direct: {0}... ", !direct));
context = new ContextHandle(Glx.CreateContext(currentWindow.Display, ref info, IntPtr.Zero, !direct));
}
}
if (context != ContextHandle.Zero)
Debug.Print("Success! (id: {0})", context);
Debug.Print("Context created (id: {0}).", context);
else
throw new GraphicsContextException("Failed to create OpenGL context. Glx.CreateContext call returned 0.");
if (!Glx.IsDirect(currentWindow.Display, context.Handle))
Debug.Print("Warning: Context is not direct.");
}
#endregion
@ -229,15 +246,15 @@ namespace OpenTK.Platform.X11
{
get
{
return vsync_supported && vsync_interval > 0;
return vsync_supported && vsync_interval != 0;
}
set
{
if (vsync_supported)
{
int error_code = Glx.Sgi.SwapInterval(value ? 1 : 0);
if (error_code != 0)
throw new GraphicsException(String.Format("Could not set vsync, error code: {0}", error_code));
ErrorCode error_code = Glx.Sgi.SwapInterval(value ? 1 : 0);
if (error_code != X11.ErrorCode.NO_ERROR)
Debug.Print("VSync = {0} failed, error code: {1}.", value, error_code);
vsync_interval = value ? 1 : 0;
}
}
@ -292,8 +309,8 @@ namespace OpenTK.Platform.X11
GL.LoadAll();
Glu.LoadAll();
Glx.LoadAll();
vsync_supported = this.SupportsExtension(currentWindow, "SGI_swap_control") &&
this.GetAddress("glXSwapControlSGI") != IntPtr.Zero;
vsync_supported = this.GetAddress("glXSwapIntervalSGI") != IntPtr.Zero;
Debug.Print("Context supports vsync: {0}.", vsync_supported);
}
#endregion