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Merge branch 'graphicsmode' into develop

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Stefanos A 2014-01-22 23:32:51 +01:00
parent 770b697583 06a3d7e1a7
commit 40ce2c4288
7 changed files with 321 additions and 191 deletions
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12
Source/OpenTK/Graphics/GraphicsMode.cs
View file

@ -22,7 +22,6 @@ namespace OpenTK.Graphics
IntPtr? index = null; // The id of the pixel format or visual.
static GraphicsMode defaultMode;
static IGraphicsMode implementation;
static readonly object SyncRoot = new object();
#region Constructors
@ -44,7 +43,7 @@ namespace OpenTK.Graphics
{
if (depth < 0) throw new ArgumentOutOfRangeException("depth", "Must be greater than, or equal to zero.");
if (stencil < 0) throw new ArgumentOutOfRangeException("stencil", "Must be greater than, or equal to zero.");
if (buffers <= 0) throw new ArgumentOutOfRangeException("buffers", "Must be greater than zero.");
if (buffers < 0) throw new ArgumentOutOfRangeException("buffers", "Must be greater than, or equal to zero.");
if (samples < 0) throw new ArgumentOutOfRangeException("samples", "Must be greater than, or equal to zero.");
this.Index = index;
@ -255,7 +254,14 @@ namespace OpenTK.Graphics
{
return samples;
}
private set { samples = value; }
private set
{
// Clamp antialiasing samples to max 64x
// This protects against a potential DOS during
// mode selection, when the user requests an
// abnormally high AA level.
samples = MathHelper.Clamp(value, 0, 64);
}
}
#endregion

56
Source/OpenTK/Platform/MacOS/AglContext.cs
View file

@ -52,8 +52,6 @@ namespace OpenTK.Platform.MacOS
DisplayDevice device;
bool mIsFullscreen = false;
readonly MacOSGraphicsMode ModeSelector = new MacOSGraphicsMode();
public AglContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext)
{
Debug.Print("Context Type: {0}", shareContext);
@ -103,6 +101,7 @@ namespace OpenTK.Platform.MacOS
aglAttributes.Add((int)pixelFormatAttribute);
aglAttributes.Add(value);
}
void CreateContext(GraphicsMode mode, CarbonWindowInfo carbonWindow, IntPtr shareContextRef, bool fullscreen)
{
Debug.Print("AGL pixel format attributes:");
@ -110,51 +109,30 @@ namespace OpenTK.Platform.MacOS
AGLPixelFormat myAGLPixelFormat;
// Choose a pixel format with the attributes we specified.
if (fullscreen)
{
IntPtr gdevice;
IntPtr cgdevice = GetQuartzDevice(carbonWindow);
IntPtr gdevice;
IntPtr cgdevice = GetQuartzDevice(carbonWindow);
if (cgdevice == IntPtr.Zero)
cgdevice = (IntPtr)DisplayDevice.Default.Id;
if (cgdevice == IntPtr.Zero)
cgdevice = (IntPtr)DisplayDevice.Default.Id;
OSStatus status = Carbon.API.DMGetGDeviceByDisplayID(cgdevice, out gdevice, false);
OSStatus status = Carbon.API.DMGetGDeviceByDisplayID(cgdevice, out gdevice, false);
if (status != OSStatus.NoError)
throw new MacOSException(status, "DMGetGDeviceByDisplayID failed.");
myAGLPixelFormat = ModeSelector.SelectPixelFormat(
mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples,
mode.AccumulatorFormat, mode.Buffers, mode.Stereo,
true, gdevice);
Agl.AglError err = Agl.GetError();
if (myAGLPixelFormat == IntPtr.Zero || err == Agl.AglError.BadPixelFormat)
{
Debug.Print("Failed to create full screen pixel format.");
Debug.Print("Trying again to create a non-fullscreen pixel format.");
CreateContext(mode, carbonWindow, shareContextRef, false);
return;
}
}
else
{
myAGLPixelFormat = ModeSelector.SelectPixelFormat(
mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples,
mode.AccumulatorFormat, mode.Buffers, mode.Stereo,
false, IntPtr.Zero);
MyAGLReportError("aglChoosePixelFormat");
}
if (status != OSStatus.NoError)
throw new MacOSException(status, "DMGetGDeviceByDisplayID failed.");
IGraphicsMode selector = new MacOSGraphicsMode(gdevice);
Mode = selector.SelectGraphicsMode(
mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples,
mode.AccumulatorFormat, mode.Buffers, mode.Stereo);
MyAGLReportError("aglChoosePixelFormat");
Debug.Print("Creating AGL context. Sharing with {0}", shareContextRef);
myAGLPixelFormat = Mode.Index.Value;
// create the context and share it with the share reference.
Handle = new ContextHandle(Agl.aglCreateContext(myAGLPixelFormat, shareContextRef));
MyAGLReportError("aglCreateContext");
Mode = ModeSelector.GetGraphicsModeFromPixelFormat(myAGLPixelFormat);
// Free the pixel format from memory.
Agl.aglDestroyPixelFormat(myAGLPixelFormat);
MyAGLReportError("aglDestroyPixelFormat");

43
Source/OpenTK/Platform/MacOS/MacOSGraphicsMode.cs
View file

@ -37,14 +37,47 @@ namespace OpenTK.Platform.MacOS
class MacOSGraphicsMode : IGraphicsMode
{
readonly IntPtr Device;
public MacOSGraphicsMode(IntPtr device)
{
Device = device;
}
#region IGraphicsMode Members
public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil,
int samples, ColorFormat accum, int buffers, bool stereo)
{
IntPtr pixelformat = SelectPixelFormat(
color, depth, stencil, samples, accum, buffers, stereo,
false, IntPtr.Zero);
IntPtr pixelformat;
do
{
pixelformat = SelectPixelFormat(
color, depth, stencil, samples, accum, buffers, stereo,
true, Device);
Agl.AglError err = Agl.GetError();
if (pixelformat == IntPtr.Zero || err == Agl.AglError.BadPixelFormat)
{
Debug.Print("Failed to create full screen pixel format.");
Debug.Print("Trying again to create a non-fullscreen pixel format.");
pixelformat = SelectPixelFormat(
color, depth, stencil, samples, accum, buffers, stereo,
false, IntPtr.Zero);
}
if (pixelformat == IntPtr.Zero)
{
if (!Utilities.RelaxGraphicsMode(
ref color, ref depth, ref stencil, ref samples, ref accum,
ref buffers, ref stereo))
{
throw new GraphicsModeException("Requested GraphicsMode not available.");
}
}
}
while (pixelformat == IntPtr.Zero);
return GetGraphicsModeFromPixelFormat(pixelformat);
}
@ -52,7 +85,7 @@ namespace OpenTK.Platform.MacOS
#region Internal Members
internal GraphicsMode GetGraphicsModeFromPixelFormat(IntPtr pixelformat)
GraphicsMode GetGraphicsModeFromPixelFormat(IntPtr pixelformat)
{
int r, g, b, a;
Agl.aglDescribePixelFormat(pixelformat, Agl.PixelFormatAttribute.AGL_RED_SIZE, out r);
@ -75,7 +108,7 @@ namespace OpenTK.Platform.MacOS
depth, stencil, samples, new ColorFormat(ar, ag, ab, aa), buffers + 1, stereo != 0);
}
internal IntPtr SelectPixelFormat(ColorFormat color, int depth, int stencil, int samples,
IntPtr SelectPixelFormat(ColorFormat color, int depth, int stencil, int samples,
ColorFormat accum, int buffers, bool stereo, bool fullscreen, IntPtr device)
{
List<int> attribs = new List<int>();

41
Source/OpenTK/Platform/SDL2/Sdl2GraphicsContext.cs
View file

@ -63,8 +63,20 @@ namespace OpenTK.Platform.SDL2
{
lock (SDL.Sync)
{
SetGLAttributes(mode, shareContext, major, minor, flags);
SdlContext = new ContextHandle(SDL.GL.CreateContext(Window.Handle));
bool retry = false;
do
{
SetGLAttributes(mode, shareContext, major, minor, flags);
SdlContext = new ContextHandle(SDL.GL.CreateContext(Window.Handle));
// If we failed to create a valid context, relax the GraphicsMode
// and try again.
retry =
SdlContext == ContextHandle.Zero &&
Utilities.RelaxGraphicsMode(ref mode);
}
while (retry);
if (SdlContext == ContextHandle.Zero)
{
var error = SDL.GetError();
@ -152,12 +164,37 @@ namespace OpenTK.Platform.SDL2
stereo != 0 ? true : false);
}
static void ClearGLAttributes()
{
SDL.GL.SetAttribute(ContextAttribute.ACCUM_ALPHA_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.ACCUM_RED_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.ACCUM_GREEN_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.ACCUM_BLUE_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.DOUBLEBUFFER, 0);
SDL.GL.SetAttribute(ContextAttribute.ALPHA_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.RED_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.GREEN_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.BLUE_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.DEPTH_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.MULTISAMPLEBUFFERS, 0);
SDL.GL.SetAttribute(ContextAttribute.MULTISAMPLESAMPLES, 0);
SDL.GL.SetAttribute(ContextAttribute.STENCIL_SIZE, 0);
SDL.GL.SetAttribute(ContextAttribute.STEREO, 0);
SDL.GL.SetAttribute(ContextAttribute.CONTEXT_MAJOR_VERSION, 1);
SDL.GL.SetAttribute(ContextAttribute.CONTEXT_MINOR_VERSION, 0);
SDL.GL.SetAttribute(ContextAttribute.CONTEXT_FLAGS, 0);
SDL.GL.SetAttribute(ContextAttribute.CONTEXT_EGL, 0);
SDL.GL.SetAttribute(ContextAttribute.CONTEXT_PROFILE_MASK, 0);
SDL.GL.SetAttribute(ContextAttribute.SHARE_WITH_CURRENT_CONTEXT, 0);
}
static void SetGLAttributes(GraphicsMode mode,
IGraphicsContext shareContext,
int major, int minor,
GraphicsContextFlags flags)
{
ContextProfileFlags cpflags = 0;
ClearGLAttributes();
if (mode.AccumulatorFormat.BitsPerPixel > 0)
{

108
Source/OpenTK/Platform/Utilities.cs
View file

@ -307,5 +307,113 @@ namespace OpenTK.Platform
#endregion
#endregion
#region RelaxGraphicsMode
internal static bool RelaxGraphicsMode(ref GraphicsMode mode)
{
ColorFormat color = mode.ColorFormat;
int depth = mode.Depth;
int stencil = mode.Stencil;
int samples = mode.Samples;
ColorFormat accum = mode.AccumulatorFormat;
int buffers = mode.Buffers;
bool stereo = mode.Stereo;
bool success = RelaxGraphicsMode(
ref color, ref depth, ref stencil, ref samples,
ref accum, ref buffers, ref stereo);
mode = new GraphicsMode(
color, depth, stencil, samples,
accum, buffers, stereo);
return success;
}
/// \internal
/// <summary>
/// Relaxes graphics mode parameters. Use this function to increase compatibility
/// on systems that do not directly support a requested GraphicsMode. For example:
/// - user requested stereoscopic rendering, but GPU does not support stereo
/// - user requseted 16x antialiasing, but GPU only supports 4x
/// </summary>
/// <returns><c>true</c>, if a graphics mode parameter was relaxed, <c>false</c> otherwise.</returns>
/// <param name="color">Color bits.</param>
/// <param name="depth">Depth bits.</param>
/// <param name="stencil">Stencil bits.</param>
/// <param name="samples">Number of antialiasing samples.</param>
/// <param name="accum">Accumulator buffer bits.</param>
/// <param name="buffers">Number of rendering buffers (1 for single buffering, 2+ for double buffering, 0 for don't care).</param>
/// <param name="stereo">Stereoscopic rendering enabled/disabled.</param>
internal static bool RelaxGraphicsMode(ref ColorFormat color, ref int depth, ref int stencil, ref int samples, ref ColorFormat accum, ref int buffers, ref bool stereo)
{
// Parameters are relaxed in order of importance.
// - Accumulator buffers are way outdated as a concept,
// so they go first.
// - Triple+ buffering is generally not supported by the
// core WGL/GLX/AGL/CGL/EGL specs, so we clamp
// to double-buffering as a second step. (If this doesn't help
// we will also fall back to undefined single/double buffering
// as a last resort).
// - AA samples are an easy way to increase compatibility
// so they go next.
// - Stereoscopic is only supported on very few GPUs
// (Quadro/FirePro series) so it goes next.
// - The rest of the parameters then follow.
if (accum != 0)
{
accum = 0;
return true;
}
if (buffers > 2)
{
buffers = 2;
return true;
}
if (samples > 0)
{
samples = Math.Max(samples - 1, 0);
return true;
}
if (stereo)
{
stereo = false;
return true;
}
if (stencil != 0)
{
stencil = 0;
return true;
}
if (depth != 0)
{
depth = 0;
return true;
}
if (color != 24)
{
color = 24;
return true;
}
if (buffers != 0)
{
buffers = 0;
return true;
}
// no parameters left to relax, fail
return false;
}
#endregion
}
}

207
Source/OpenTK/Platform/Windows/WinGraphicsMode.cs
View file

@ -96,114 +96,123 @@ namespace OpenTK.Platform.Windows
// hardware acceleration (e.g. we are running in a VM or in a remote desktop
// connection), this method will return 0 formats and we will fall back to
// ChoosePixelFormatPFD.
GraphicsMode ChoosePixelFormatARB(IntPtr device, GraphicsMode mode)
GraphicsMode ChoosePixelFormatARB(IntPtr device, GraphicsMode desired_mode)
{
GraphicsMode created_mode = null;
GraphicsMode mode = new GraphicsMode(desired_mode);
if (Wgl.SupportsExtension("WGL_ARB_pixel_format") &&
Wgl.SupportsFunction("wglChoosePixelFormatARB"))
{
List<int> attributes = new List<int>();
attributes.Add((int)WGL_ARB_pixel_format.AccelerationArb);
attributes.Add((int)WGL_ARB_pixel_format.FullAccelerationArb);
attributes.Add((int)WGL_ARB_pixel_format.DrawToWindowArb);
attributes.Add(1);
if (mode.ColorFormat.Red > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.RedBitsArb);
attributes.Add(mode.ColorFormat.Red);
}
if (mode.ColorFormat.Green > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.GreenBitsArb);
attributes.Add(mode.ColorFormat.Green);
}
if (mode.ColorFormat.Blue > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.BlueBitsArb);
attributes.Add(mode.ColorFormat.Blue);
}
if (mode.ColorFormat.Alpha > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AlphaBitsArb);
attributes.Add(mode.ColorFormat.Alpha);
}
if (mode.Depth > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.DepthBitsArb);
attributes.Add(mode.Depth);
}
if (mode.Stencil > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.StencilBitsArb);
attributes.Add(mode.Stencil);
}
if (mode.AccumulatorFormat.Red > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumRedBitsArb);
attributes.Add(mode.AccumulatorFormat.Red);
}
if (mode.AccumulatorFormat.Green > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumGreenBitsArb);
attributes.Add(mode.AccumulatorFormat.Green);
}
if (mode.AccumulatorFormat.Blue > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumBlueBitsArb);
attributes.Add(mode.AccumulatorFormat.Blue);
}
if (mode.AccumulatorFormat.Alpha > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumAlphaBitsArb);
attributes.Add(mode.AccumulatorFormat.Alpha);
}
if (mode.Samples > 0 &&
Wgl.SupportsExtension("WGL_ARB_multisample"))
{
attributes.Add((int)WGL_ARB_multisample.SampleBuffersArb);
attributes.Add(1);
attributes.Add((int)WGL_ARB_multisample.SamplesArb);
attributes.Add(mode.Samples);
}
if (mode.Buffers > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.DoubleBufferArb);
attributes.Add(mode.Buffers > 1 ? 1 : 0);
}
if (mode.Stereo)
{
attributes.Add((int)WGL_ARB_pixel_format.StereoArb);
attributes.Add(1);
}
attributes.Add(0);
attributes.Add(0);
int[] format = new int[1];
int count;
if (Wgl.Arb.ChoosePixelFormat(device, attributes.ToArray(), null, format.Length, format, out count)
&& count > 0)
List<int> attributes = new List<int>();
bool retry = false;
do
{
created_mode = DescribePixelFormatARB(device, format[0]);
}
else
{
Debug.Print("[WGL] ChoosePixelFormatARB failed with {0}", Marshal.GetLastWin32Error());
attributes.Clear();
attributes.Add((int)WGL_ARB_pixel_format.AccelerationArb);
attributes.Add((int)WGL_ARB_pixel_format.FullAccelerationArb);
attributes.Add((int)WGL_ARB_pixel_format.DrawToWindowArb);
attributes.Add(1);
if (mode.ColorFormat.Red > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.RedBitsArb);
attributes.Add(mode.ColorFormat.Red);
}
if (mode.ColorFormat.Green > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.GreenBitsArb);
attributes.Add(mode.ColorFormat.Green);
}
if (mode.ColorFormat.Blue > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.BlueBitsArb);
attributes.Add(mode.ColorFormat.Blue);
}
if (mode.ColorFormat.Alpha > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AlphaBitsArb);
attributes.Add(mode.ColorFormat.Alpha);
}
if (mode.Depth > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.DepthBitsArb);
attributes.Add(mode.Depth);
}
if (mode.Stencil > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.StencilBitsArb);
attributes.Add(mode.Stencil);
}
if (mode.AccumulatorFormat.Red > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumRedBitsArb);
attributes.Add(mode.AccumulatorFormat.Red);
}
if (mode.AccumulatorFormat.Green > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumGreenBitsArb);
attributes.Add(mode.AccumulatorFormat.Green);
}
if (mode.AccumulatorFormat.Blue > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumBlueBitsArb);
attributes.Add(mode.AccumulatorFormat.Blue);
}
if (mode.AccumulatorFormat.Alpha > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.AccumAlphaBitsArb);
attributes.Add(mode.AccumulatorFormat.Alpha);
}
if (mode.Samples > 0 &&
Wgl.SupportsExtension("WGL_ARB_multisample"))
{
attributes.Add((int)WGL_ARB_multisample.SampleBuffersArb);
attributes.Add(1);
attributes.Add((int)WGL_ARB_multisample.SamplesArb);
attributes.Add(mode.Samples);
}
if (mode.Buffers > 0)
{
attributes.Add((int)WGL_ARB_pixel_format.DoubleBufferArb);
attributes.Add(mode.Buffers > 1 ? 1 : 0);
}
if (mode.Stereo)
{
attributes.Add((int)WGL_ARB_pixel_format.StereoArb);
attributes.Add(1);
}
attributes.Add(0);
attributes.Add(0);
if (Wgl.Arb.ChoosePixelFormat(device, attributes.ToArray(), null, format.Length, format, out count)
&& count > 0)
{
created_mode = DescribePixelFormatARB(device, format[0]);
retry = false;
}
else
{
Debug.Print("[WGL] ChoosePixelFormatARB failed with {0}", Marshal.GetLastWin32Error());
retry = Utilities.RelaxGraphicsMode(ref mode);
}
}
while (retry);
}
else
{

45
Source/OpenTK/Platform/X11/X11GraphicsMode.cs
View file

@ -52,49 +52,8 @@ namespace OpenTK.Platform.X11
if (visual == IntPtr.Zero)
{
// Relax parameters and retry
if (stereo)
{
stereo = false;
continue;
}
if (accum != 0)
{
accum = 0;
continue;
}
if (samples > 0)
{
samples = Math.Max(samples - 2, 0);
continue;
}
if (stencil != 0)
{
stencil = 0;
continue;
}
if (depth != 0)
{
depth = 0;
continue;
}
if (color != 24)
{
color = 24;
continue;
}
if (buffers != 0)
{
buffers = 0;
continue;
}
throw new GraphicsModeException("Requested GraphicsMode not available.");
if (!Utilities.RelaxGraphicsMode(ref color, ref depth, ref stencil, ref samples, ref accum, ref buffers, ref stereo))
throw new GraphicsModeException("Requested GraphicsMode not available.");
}
}
while (visual == IntPtr.Zero);