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Use Glx.ChooseFBConfig instead of the deprecated Glx.ChooseVisual, if the first is available. This is necessary for OpenGL 3.0 contexts.

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This commit is contained in:
the_fiddler 2009-03-07 07:16:46 +00:00
parent 130d72dcf3
commit d2376ced1f
1 changed files with 38 additions and 3 deletions
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41
Source/OpenTK/Platform/X11/X11GraphicsMode.cs
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@ -18,16 +18,22 @@ namespace OpenTK.Platform.X11
{ {
class X11GraphicsMode : IGraphicsMode class X11GraphicsMode : IGraphicsMode
{ {
internal X11GraphicsMode() #region Constructors
public X11GraphicsMode()
{ {
} }
#endregion
#region IGraphicsMode Members
public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum, public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum,
int buffers, bool stereo) int buffers, bool stereo)
{ {
GraphicsMode gfx; // The actual GraphicsMode that will be selected. GraphicsMode gfx; // The actual GraphicsMode that will be selected.
List<int> visualAttributes = new List<int>(); List<int> visualAttributes = new List<int>();
IntPtr visual; IntPtr visual = IntPtr.Zero;
Debug.Print("Bits per pixel: {0}", color.BitsPerPixel); Debug.Print("Bits per pixel: {0}", color.BitsPerPixel);
@ -90,7 +96,34 @@ namespace OpenTK.Platform.X11
IntPtr root = Functions.XRootWindow(display, screen); IntPtr root = Functions.XRootWindow(display, screen);
Debug.Print("Display: {0}, Screen: {1}, RootWindow: {2}", display, screen, root); Debug.Print("Display: {0}, Screen: {1}, RootWindow: {2}", display, screen, root);
visual = Glx.ChooseVisual(display, screen, visualAttributes.ToArray()); try
{
unsafe
{
Debug.Print("Getting FB config.");
int fbcount;
// Note that ChooseFBConfig returns an array of GLXFBConfig opaque structures (i.e. mapped to IntPtrs).
IntPtr* fbconfigs = Glx.ChooseFBConfig(display, screen, visualAttributes.ToArray(), out fbcount);
if (fbcount > 0 && fbconfigs != null)
{
// We want to use the first GLXFBConfig from the fbconfigs array (the first one is the best match).
visual = Glx.GetVisualFromFBConfig(display, *fbconfigs);
Functions.XFree((IntPtr)fbconfigs);
}
}
}
catch (EntryPointNotFoundException)
{
Debug.Print("Functions glXChooseFBConfig not supported.");
}
// Older drivers don't support glXChooseFBConfig and glXGetVisualFromFBConfig.
// Fall back to the old glXChooseVisual method.
if (visual == IntPtr.Zero)
{
Debug.Print("Falling back to glXChooseVisual.");
visual = Glx.ChooseVisual(display, screen, visualAttributes.ToArray());
}
if (visual == IntPtr.Zero) if (visual == IntPtr.Zero)
throw new GraphicsContextException("Requested GraphicsMode not available."); throw new GraphicsContextException("Requested GraphicsMode not available.");
@ -156,5 +189,7 @@ namespace OpenTK.Platform.X11
return gfx; return gfx;
} }
#endregion
} }
} }