|
private ChooseFBConfig ( |
||
| dpy | ||
| screen | int | |
| attriblist | int | |
| fbount | int | |
| return | IntPtr* | |
private IntPtr SelectFBConfig(GraphicsMode mode)
{
Debug.Print("Selecting FB config for {0}", mode);
var visualAttributes = new List <int>();
if (mode.ColorFormat.BitsPerPixel > 0)
{
if (!mode.ColorFormat.IsIndexed)
{
visualAttributes.Add((int)GLXAttribute.RENDER_TYPE);
visualAttributes.Add((int)GLXRenderTypeMask.RGBA_BIT);
}
visualAttributes.Add((int)GLXAttribute.RED_SIZE);
visualAttributes.Add(mode.ColorFormat.Red);
visualAttributes.Add((int)GLXAttribute.GREEN_SIZE);
visualAttributes.Add(mode.ColorFormat.Green);
visualAttributes.Add((int)GLXAttribute.BLUE_SIZE);
visualAttributes.Add(mode.ColorFormat.Blue);
visualAttributes.Add((int)GLXAttribute.ALPHA_SIZE);
visualAttributes.Add(mode.ColorFormat.Alpha);
}
if (mode.Depth > 0)
{
visualAttributes.Add((int)GLXAttribute.DEPTH_SIZE);
visualAttributes.Add(mode.Depth);
}
if (mode.Buffers > 1)
{
visualAttributes.Add((int)GLXAttribute.DOUBLEBUFFER);
visualAttributes.Add(1);
}
if (mode.Stereo)
{
visualAttributes.Add((int)GLXAttribute.STENCIL_SIZE);
visualAttributes.Add(mode.Stereo ? 1 : 0);
}
if (mode.AccumulatorFormat.BitsPerPixel > 0)
{
visualAttributes.Add((int)GLXAttribute.ACCUM_ALPHA_SIZE);
visualAttributes.Add(mode.AccumulatorFormat.Alpha);
visualAttributes.Add((int)GLXAttribute.ACCUM_BLUE_SIZE);
visualAttributes.Add(mode.AccumulatorFormat.Blue);
visualAttributes.Add((int)GLXAttribute.ACCUM_GREEN_SIZE);
visualAttributes.Add(mode.AccumulatorFormat.Green);
visualAttributes.Add((int)GLXAttribute.ACCUM_RED_SIZE);
visualAttributes.Add(mode.AccumulatorFormat.Red);
}
if (mode.Samples > 0)
{
visualAttributes.Add((int)GLXAttribute.SAMPLE_BUFFERS);
visualAttributes.Add(1);
visualAttributes.Add((int)GLXAttribute.SAMPLES);
visualAttributes.Add(mode.Samples);
}
if (mode.Stereo)
{
visualAttributes.Add((int)GLXAttribute.STEREO);
visualAttributes.Add(1);
}
visualAttributes.Add(0);
// Select a visual that matches the parameters set by the user.
var display = API.DefaultDisplay;
var result = IntPtr.Zero;
using (new XLock(display))
{
try
{
var screen = Functions.XDefaultScreen(display);
var 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).
var 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).
Debug.Print("Selected FB config: {0}", *fbconfigs);
result = *fbconfigs;
Functions.XFree((IntPtr)fbconfigs);
}
else
{
Debug.Print("No matching FB config found.");
}
}
}
catch (EntryPointNotFoundException)
{
Debug.Print("Function glXChooseFBConfig not supported.");
}
}
return(result);
}
private unsafe IntPtr SelectVisualUsingFBConfig(ColorFormat color, int depth, int stencil, int samples, ColorFormat accum, int buffers, bool stereo)
{
List <int> list = new List <int>();
IntPtr num1 = IntPtr.Zero;
if (color.BitsPerPixel > 0)
{
if (!color.IsIndexed)
{
list.Add(4);
list.Add(1);
}
list.Add(8);
list.Add(color.Red);
list.Add(9);
list.Add(color.Green);
list.Add(10);
list.Add(color.Blue);
list.Add(11);
list.Add(color.Alpha);
}
if (depth > 0)
{
list.Add(12);
list.Add(depth);
}
if (buffers > 1)
{
list.Add(5);
list.Add(1);
}
if (stencil > 1)
{
list.Add(13);
list.Add(stencil);
}
if (accum.BitsPerPixel > 0)
{
list.Add(17);
list.Add(accum.Alpha);
list.Add(16);
list.Add(accum.Blue);
list.Add(15);
list.Add(accum.Green);
list.Add(14);
list.Add(accum.Red);
}
if (samples > 0)
{
list.Add(100000);
list.Add(1);
list.Add(100001);
list.Add(samples);
}
if (stereo)
{
list.Add(6);
list.Add(1);
}
list.Add(0);
IntPtr defaultDisplay = API.DefaultDisplay;
using (new XLock(defaultDisplay))
{
try
{
int num2 = Functions.XDefaultScreen(defaultDisplay);
Functions.XRootWindow(defaultDisplay, num2);
int fbount;
IntPtr *numPtr = Glx.ChooseFBConfig(defaultDisplay, num2, list.ToArray(), out fbount);
if (fbount > 0)
{
if ((IntPtr)numPtr != IntPtr.Zero)
{
num1 = Glx.GetVisualFromFBConfig(defaultDisplay, *numPtr);
Functions.XFree((IntPtr)((void *)numPtr));
}
}
}
catch (EntryPointNotFoundException ex)
{
return(IntPtr.Zero);
}
}
return(num1);
}
public X11GLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shared, bool direct,
int major, int minor, GraphicsContextFlags flags)
: base(DesktopBackend.OpenGL)
{
if (mode == null)
{
throw new ArgumentNullException("mode");
}
if (window == null)
{
throw new ArgumentNullException("window");
}
Mode = mode;
// Do not move this lower, as almost everything requires the Display
// property to be correctly set.
Display = ((X11WindowInfo)window).Display;
currentWindow = (X11WindowInfo)window;
currentWindow.VisualInfo = SelectVisual(mode, currentWindow);
ContextHandle shareHandle = shared != null ?
(shared as IGraphicsContextInternal).Context : (ContextHandle)IntPtr.Zero;
Debug.Write("Creating X11GLContext context: ");
Debug.Write(direct ? "direct, " : "indirect, ");
Debug.WriteLine(shareHandle.Handle == IntPtr.Zero ? "not shared... " :
String.Format("shared with ({0})... ", shareHandle));
if (!glx_loaded)
{
Debug.WriteLine("Creating temporary context to load GLX extensions.");
// Create a temporary context to obtain the necessary function pointers.
XVisualInfo visual = currentWindow.VisualInfo;
IntPtr ctx = IntPtr.Zero;
using (new XLock(Display))
{
ctx = Glx.CreateContext(Display, ref visual, IntPtr.Zero, true);
if (ctx == IntPtr.Zero)
{
ctx = Glx.CreateContext(Display, ref visual, IntPtr.Zero, false);
}
}
if (ctx != IntPtr.Zero)
{
new Glx().LoadEntryPoints();
using (new XLock(Display))
{
Glx.MakeCurrent(Display, IntPtr.Zero, IntPtr.Zero);
//Glx.DestroyContext(Display, ctx);
}
glx_loaded = true;
}
}
// 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.
// 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.Write("Using GLX_ARB_create_context... ");
unsafe
{
// We need the FB config for the current GraphicsMode.
int count;
IntPtr *fbconfigs = Glx.ChooseFBConfig(Display, currentWindow.Screen,
new int[] {
(int)GLXAttribute.VISUAL_ID,
(int)mode.Index,
0
}, out count);
if (count > 0)
{
List <int> attributes = new List <int>();
attributes.Add((int)ArbCreateContext.MajorVersion);
attributes.Add(major);
attributes.Add((int)ArbCreateContext.MinorVersion);
attributes.Add(minor);
if (flags != 0)
{
#warning "This is not entirely correct: Embedded is not a valid flag! We need to add a GetARBContextFlags(GraphicsContextFlags) method."
attributes.Add((int)ArbCreateContext.Flags);
attributes.Add((int)flags);
}
// According to the docs, " <attribList> specifies a list of attributes for the context.
// The list consists of a sequence of <name,value> pairs terminated by the
// value 0. [...]"
// Is this a single 0, or a <0, 0> pair? (Defensive coding: add two zeroes just in case).
attributes.Add(0);
attributes.Add(0);
using (new XLock(Display))
{
Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(Display, *fbconfigs,
shareHandle.Handle, direct, attributes.ToArray()));
if (Handle == ContextHandle.Zero)
{
Debug.Write(String.Format("failed. Trying direct: {0}... ", !direct));
Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(Display, *fbconfigs,
shareHandle.Handle, !direct, attributes.ToArray()));
}
}
if (Handle == ContextHandle.Zero)
{
Debug.WriteLine("failed.");
}
else
{
Debug.WriteLine("success!");
}
using (new XLock(Display))
{
Functions.XFree((IntPtr)fbconfigs);
}
}
}
}
if (Handle == ContextHandle.Zero)
{
Debug.Write("Using legacy context creation... ");
XVisualInfo info = currentWindow.VisualInfo;
using (new XLock(Display))
{
// Cannot pass a Property by reference.
Handle = new ContextHandle(Glx.CreateContext(Display, ref info, shareHandle.Handle, direct));
if (Handle == ContextHandle.Zero)
{
Debug.WriteLine(String.Format("failed. Trying direct: {0}... ", !direct));
Handle = new ContextHandle(Glx.CreateContext(Display, ref info, IntPtr.Zero, !direct));
}
}
}
if (Handle != ContextHandle.Zero)
{
Debug.Print("Context created (id: {0}).", Handle);
}
else
{
throw new GraphicsContextException("Failed to create OpenGL context. Glx.CreateContext call returned 0.");
}
using (new XLock(Display))
{
if (!Glx.IsDirect(Display, Handle.Handle))
{
Debug.Print("Warning: Context is not direct.");
}
}
}
public X11GLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shared, bool direct,
int major, int minor, GraphicsContextFlags flags)
{
if (mode == null)
{
throw new ArgumentNullException("mode");
}
if (window == null)
{
throw new ArgumentNullException("window");
}
Mode = mode;
currentWindow = (X11WindowInfo)window;
currentWindow.VisualInfo = SelectVisual(mode, currentWindow);
ContextHandle shareHandle = shared != null ?
(shared as IGraphicsContextInternal).Context : (ContextHandle)IntPtr.Zero;
Debug.Write("Creating X11GLContext context: ");
Debug.Write(direct ? "direct, " : "indirect, ");
Debug.WriteLine(shareHandle.Handle == IntPtr.Zero ? "not shared... " :
String.Format("shared with ({0})... ", shareHandle));
if (!glx_loaded)
{
Debug.WriteLine("Creating temporary context to load GLX extensions.");
// Create a temporary context to obtain the necessary function pointers.
XVisualInfo visual = currentWindow.VisualInfo;
IntPtr ctx = Glx.CreateContext(currentWindow.Display, ref visual, IntPtr.Zero, true);
if (ctx == IntPtr.Zero)
{
ctx = Glx.CreateContext(currentWindow.Display, ref visual, IntPtr.Zero, false);
}
if (ctx != IntPtr.Zero)
{
new Glx().LoadAll();
Glx.MakeCurrent(currentWindow.Display, IntPtr.Zero, IntPtr.Zero);
//Glx.DestroyContext(currentWindow.Display, ctx);
glx_loaded = true;
}
}
// 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.
// 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.Write("Using GLX_ARB_create_context... ");
unsafe
{
// We need the FB config for the current GraphicsMode.
int count;
IntPtr *fbconfigs = Glx.ChooseFBConfig(currentWindow.Display, currentWindow.Screen,
new int[] { (int)GLXAttribute.VISUAL_ID, (int)mode.Index, 0 }, out count);
if (count > 0)
{
List <int> attributes = new List <int>();
attributes.Add((int)ArbCreateContext.MajorVersion);
attributes.Add(major);
attributes.Add((int)ArbCreateContext.MinorVersion);
attributes.Add(minor);
if (flags != 0)
{
attributes.Add((int)ArbCreateContext.Flags);
attributes.Add((int)flags);
}
attributes.Add(0);
Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(currentWindow.Display, *fbconfigs,
shareHandle.Handle, direct, attributes.ToArray()));
if (Handle == ContextHandle.Zero)
{
Debug.Write(String.Format("failed. Trying direct: {0}... ", !direct));
Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(currentWindow.Display, *fbconfigs,
shareHandle.Handle, !direct, attributes.ToArray()));
}
if (Handle == ContextHandle.Zero)
{
Debug.WriteLine("failed.");
}
else
{
Debug.WriteLine("success!");
}
Functions.XFree((IntPtr)fbconfigs);
}
}
}
if (Handle == ContextHandle.Zero)
{
Debug.Write("Using legacy context creation... ");
XVisualInfo info = currentWindow.VisualInfo; // Cannot pass a Property by reference.
Handle = new ContextHandle(Glx.CreateContext(currentWindow.Display, ref info, shareHandle.Handle, direct));
if (Handle == ContextHandle.Zero)
{
Debug.WriteLine(String.Format("failed. Trying direct: {0}... ", !direct));
Handle = new ContextHandle(Glx.CreateContext(currentWindow.Display, ref info, IntPtr.Zero, !direct));
}
}
if (Handle != ContextHandle.Zero)
{
Debug.Print("Context created (id: {0}).", Handle);
}
else
{
throw new GraphicsContextException("Failed to create OpenGL context. Glx.CreateContext call returned 0.");
}
if (!Glx.IsDirect(currentWindow.Display, Handle.Handle))
{
Debug.Print("Warning: Context is not direct.");
}
}
// 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);
}
public unsafe X11GLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shared, bool direct, int major, int minor, GraphicsContextFlags flags)
{
if (mode == null)
{
throw new ArgumentNullException("mode");
}
if (window == null)
{
throw new ArgumentNullException("window");
}
this.Mode = mode;
this.Display = ((X11WindowInfo)window).Display;
this.currentWindow = (X11WindowInfo)window;
this.currentWindow.VisualInfo = this.SelectVisual(mode, this.currentWindow);
ContextHandle contextHandle = shared != null ? (shared as IGraphicsContextInternal).Context : (ContextHandle)IntPtr.Zero;
if (!this.glx_loaded)
{
XVisualInfo visualInfo = this.currentWindow.VisualInfo;
IntPtr num = IntPtr.Zero;
using (new XLock(this.Display))
{
num = Glx.CreateContext(this.Display, ref visualInfo, IntPtr.Zero, true);
if (num == IntPtr.Zero)
{
num = Glx.CreateContext(this.Display, ref visualInfo, IntPtr.Zero, false);
}
}
if (num != IntPtr.Zero)
{
new Glx().LoadEntryPoints();
using (new XLock(this.Display))
Glx.MakeCurrent(this.Display, IntPtr.Zero, IntPtr.Zero);
this.glx_loaded = true;
}
}
if (major * 10 + minor >= 30 && Glx.Delegates.glXCreateContextAttribsARB != null)
{
int fbount;
IntPtr *numPtr = Glx.ChooseFBConfig(this.Display, this.currentWindow.Screen, new int[3]
{
32779,
(int)mode.Index.Value,
0
}, out fbount);
if (fbount > 0)
{
List <int> list = new List <int>();
list.Add(8337);
list.Add(major);
list.Add(8338);
list.Add(minor);
if (flags != GraphicsContextFlags.Default)
{
list.Add(8340);
list.Add((int)flags);
}
list.Add(0);
list.Add(0);
using (new XLock(this.Display))
{
this.Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(this.Display, *numPtr, contextHandle.Handle, direct, list.ToArray()));
if (this.Handle == ContextHandle.Zero)
{
this.Handle = new ContextHandle(Glx.Arb.CreateContextAttribs(this.Display, *numPtr, contextHandle.Handle, !direct, list.ToArray()));
}
}
int num = this.Handle == ContextHandle.Zero ? 1 : 0;
using (new XLock(this.Display))
Functions.XFree((IntPtr)((void *)numPtr));
}
}
if (this.Handle == ContextHandle.Zero)
{
XVisualInfo visualInfo = this.currentWindow.VisualInfo;
using (new XLock(this.Display))
{
this.Handle = new ContextHandle(Glx.CreateContext(this.Display, ref visualInfo, contextHandle.Handle, direct));
if (this.Handle == ContextHandle.Zero)
{
this.Handle = new ContextHandle(Glx.CreateContext(this.Display, ref visualInfo, IntPtr.Zero, !direct));
}
}
}
if (!(this.Handle != ContextHandle.Zero))
{
throw new GraphicsContextException("Failed to create OpenGL context. Glx.CreateContext call returned 0.");
}
using (new XLock(this.Display))
Glx.IsDirect(this.Display, this.Handle.Handle);
}