mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-25 17:55:31 +00:00
275 lines
11 KiB
C#
275 lines
11 KiB
C#
#region --- License ---
|
|
/* Licensed under the MIT/X11 license.
|
|
* Copyright (c) 2006-2008 the OpenTK Team.
|
|
* This notice may not be removed from any source distribution.
|
|
* See license.txt for licensing detailed licensing details.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.Runtime.InteropServices;
|
|
using System.Diagnostics;
|
|
|
|
using OpenTK.Graphics;
|
|
|
|
namespace OpenTK.Platform.X11
|
|
{
|
|
class X11GraphicsMode : IGraphicsMode
|
|
{
|
|
// Todo: Add custom visual selection algorithm, instead of ChooseFBConfig/ChooseVisual.
|
|
// It seems the Choose* methods do not take multisampling into account (at least on some
|
|
// drivers).
|
|
|
|
#region Constructors
|
|
|
|
public X11GraphicsMode()
|
|
{
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IGraphicsMode Members
|
|
|
|
public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum,
|
|
int buffers, bool stereo)
|
|
{
|
|
GraphicsMode gfx;
|
|
// The actual GraphicsMode that will be selected.
|
|
IntPtr visual = IntPtr.Zero;
|
|
IntPtr display = API.DefaultDisplay;
|
|
|
|
// Try to select a visual using Glx.ChooseFBConfig and Glx.GetVisualFromFBConfig.
|
|
// This is only supported on GLX 1.3 - if it fails, fall back to Glx.ChooseVisual.
|
|
visual = SelectVisualUsingFBConfig(color, depth, stencil, samples, accum, buffers, stereo);
|
|
|
|
if (visual == IntPtr.Zero)
|
|
visual = SelectVisualUsingChooseVisual(color, depth, stencil, samples, accum, buffers, stereo);
|
|
|
|
if (visual == IntPtr.Zero)
|
|
throw new GraphicsModeException("Requested GraphicsMode not available.");
|
|
|
|
XVisualInfo info = (XVisualInfo)Marshal.PtrToStructure(visual, typeof(XVisualInfo));
|
|
|
|
// See what we *really* got:
|
|
int r, g, b, a;
|
|
Glx.GetConfig(display, ref info, GLXAttribute.ALPHA_SIZE, out a);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.RED_SIZE, out r);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.GREEN_SIZE, out g);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.BLUE_SIZE, out b);
|
|
int ar, ag, ab, aa;
|
|
Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_ALPHA_SIZE, out aa);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_RED_SIZE, out ar);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_GREEN_SIZE, out ag);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_BLUE_SIZE, out ab);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.DEPTH_SIZE, out depth);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.STENCIL_SIZE, out stencil);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.SAMPLES, out samples);
|
|
Glx.GetConfig(display, ref info, GLXAttribute.DOUBLEBUFFER, out buffers);
|
|
++buffers;
|
|
// the above lines returns 0 - false and 1 - true.
|
|
int st;
|
|
Glx.GetConfig(display, ref info, GLXAttribute.STEREO, out st);
|
|
stereo = st != 0;
|
|
|
|
gfx = new GraphicsMode(info.VisualID, new ColorFormat(r, g, b, a), depth, stencil, samples,
|
|
new ColorFormat(ar, ag, ab, aa), buffers, stereo);
|
|
|
|
using (new XLock(display))
|
|
{
|
|
Functions.XFree(visual);
|
|
}
|
|
|
|
return gfx;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Private Members
|
|
|
|
// See http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.opengl/doc/openglrf/glXChooseFBConfig.htm
|
|
// for the attribute declarations. Note that the attributes are different than those used in Glx.ChooseVisual.
|
|
IntPtr SelectVisualUsingFBConfig(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum,
|
|
int buffers, bool stereo)
|
|
{
|
|
List<int> visualAttributes = new List<int>();
|
|
IntPtr visual = IntPtr.Zero;
|
|
|
|
Debug.Print("Bits per pixel: {0}", color.BitsPerPixel);
|
|
|
|
if (color.BitsPerPixel > 0)
|
|
{
|
|
if (!color.IsIndexed)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.RGBA);
|
|
visualAttributes.Add(1);
|
|
}
|
|
visualAttributes.Add((int)GLXAttribute.RED_SIZE);
|
|
visualAttributes.Add(color.Red);
|
|
visualAttributes.Add((int)GLXAttribute.GREEN_SIZE);
|
|
visualAttributes.Add(color.Green);
|
|
visualAttributes.Add((int)GLXAttribute.BLUE_SIZE);
|
|
visualAttributes.Add(color.Blue);
|
|
visualAttributes.Add((int)GLXAttribute.ALPHA_SIZE);
|
|
visualAttributes.Add(color.Alpha);
|
|
}
|
|
|
|
Debug.Print("Depth: {0}", depth);
|
|
|
|
if (depth > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.DEPTH_SIZE);
|
|
visualAttributes.Add(depth);
|
|
}
|
|
|
|
if (buffers > 1)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.DOUBLEBUFFER);
|
|
visualAttributes.Add(1);
|
|
}
|
|
|
|
if (stencil > 1)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.STENCIL_SIZE);
|
|
visualAttributes.Add(stencil);
|
|
}
|
|
|
|
if (accum.BitsPerPixel > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_ALPHA_SIZE);
|
|
visualAttributes.Add(accum.Alpha);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_BLUE_SIZE);
|
|
visualAttributes.Add(accum.Blue);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_GREEN_SIZE);
|
|
visualAttributes.Add(accum.Green);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_RED_SIZE);
|
|
visualAttributes.Add(accum.Red);
|
|
}
|
|
|
|
if (samples > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.SAMPLE_BUFFERS);
|
|
visualAttributes.Add(1);
|
|
visualAttributes.Add((int)GLXAttribute.SAMPLES);
|
|
visualAttributes.Add(samples);
|
|
}
|
|
|
|
if (stereo)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.STEREO);
|
|
visualAttributes.Add(1);
|
|
}
|
|
|
|
visualAttributes.Add(0);
|
|
|
|
// Select a visual that matches the parameters set by the user.
|
|
IntPtr display = API.DefaultDisplay;
|
|
using (new XLock(display))
|
|
{
|
|
try
|
|
{
|
|
int screen = Functions.XDefaultScreen(display);
|
|
IntPtr root = Functions.XRootWindow(display, screen);
|
|
Debug.Print("Display: {0}, Screen: {1}, RootWindow: {2}", display, screen, root);
|
|
|
|
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("Function glXChooseFBConfig not supported.");
|
|
return IntPtr.Zero;
|
|
}
|
|
}
|
|
|
|
return visual;
|
|
}
|
|
|
|
// See http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.opengl/doc/openglrf/glXChooseVisual.htm
|
|
IntPtr SelectVisualUsingChooseVisual(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum,
|
|
int buffers, bool stereo)
|
|
{
|
|
List<int> visualAttributes = new List<int>();
|
|
|
|
Debug.Print("Bits per pixel: {0}", color.BitsPerPixel);
|
|
|
|
if (color.BitsPerPixel > 0)
|
|
{
|
|
if (!color.IsIndexed)
|
|
visualAttributes.Add((int)GLXAttribute.RGBA);
|
|
visualAttributes.Add((int)GLXAttribute.RED_SIZE);
|
|
visualAttributes.Add(color.Red);
|
|
visualAttributes.Add((int)GLXAttribute.GREEN_SIZE);
|
|
visualAttributes.Add(color.Green);
|
|
visualAttributes.Add((int)GLXAttribute.BLUE_SIZE);
|
|
visualAttributes.Add(color.Blue);
|
|
visualAttributes.Add((int)GLXAttribute.ALPHA_SIZE);
|
|
visualAttributes.Add(color.Alpha);
|
|
}
|
|
|
|
Debug.Print("Depth: {0}", depth);
|
|
|
|
if (depth > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.DEPTH_SIZE);
|
|
visualAttributes.Add(depth);
|
|
}
|
|
|
|
if (buffers > 1)
|
|
visualAttributes.Add((int)GLXAttribute.DOUBLEBUFFER);
|
|
|
|
if (stencil > 1)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.STENCIL_SIZE);
|
|
visualAttributes.Add(stencil);
|
|
}
|
|
|
|
if (accum.BitsPerPixel > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_ALPHA_SIZE);
|
|
visualAttributes.Add(accum.Alpha);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_BLUE_SIZE);
|
|
visualAttributes.Add(accum.Blue);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_GREEN_SIZE);
|
|
visualAttributes.Add(accum.Green);
|
|
visualAttributes.Add((int)GLXAttribute.ACCUM_RED_SIZE);
|
|
visualAttributes.Add(accum.Red);
|
|
}
|
|
|
|
if (samples > 0)
|
|
{
|
|
visualAttributes.Add((int)GLXAttribute.SAMPLE_BUFFERS);
|
|
visualAttributes.Add(1);
|
|
visualAttributes.Add((int)GLXAttribute.SAMPLES);
|
|
visualAttributes.Add(samples);
|
|
}
|
|
|
|
if (stereo)
|
|
visualAttributes.Add((int)GLXAttribute.STEREO);
|
|
|
|
visualAttributes.Add(0);
|
|
|
|
Debug.Print("Falling back to glXChooseVisual.");
|
|
IntPtr display = API.DefaultDisplay;
|
|
using (new XLock(display))
|
|
{
|
|
return Glx.ChooseVisual(display, Functions.XDefaultScreen(display), visualAttributes.ToArray());
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|