mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-27 09:25:40 +00:00
432 lines
18 KiB
C#
432 lines
18 KiB
C#
#region License
|
|
//
|
|
// The Open Toolkit Library License
|
|
//
|
|
// Copyright (c) 2006 - 2010 the Open Toolkit library.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights to
|
|
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
// the Software, and to permit persons to whom the Software is furnished to do
|
|
// so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
// OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.Diagnostics;
|
|
using System.Runtime.InteropServices;
|
|
|
|
using OpenTK.Graphics;
|
|
|
|
namespace OpenTK.Platform.Windows
|
|
{
|
|
class WinGraphicsMode : IGraphicsMode
|
|
{
|
|
enum AccelerationType
|
|
{
|
|
// Software acceleration
|
|
None = 0,
|
|
// Partial acceleration (Direct3D emulation)
|
|
MCD,
|
|
// Full acceleration
|
|
ICD,
|
|
}
|
|
|
|
static readonly object SyncRoot = new object();
|
|
readonly IntPtr Device;
|
|
readonly List<GraphicsMode> modes = new List<GraphicsMode>();
|
|
|
|
#region Constructors
|
|
|
|
public WinGraphicsMode(IntPtr device)
|
|
{
|
|
if (device == IntPtr.Zero)
|
|
throw new ArgumentException();
|
|
|
|
Device = device;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IGraphicsMode Members
|
|
|
|
public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil, int samples,
|
|
ColorFormat accum, int buffers, bool stereo)
|
|
{
|
|
GraphicsMode mode = new GraphicsMode(color, depth, stencil, samples,accum, buffers, stereo);
|
|
GraphicsMode created_mode = ChoosePixelFormatARB(Device, mode);
|
|
|
|
// If ChoosePixelFormatARB failed, iterate through all acceleration types in turn (ICD, MCD, None)
|
|
// This should fix issue #2224, which causes OpenTK to fail on VMs without hardware acceleration.
|
|
created_mode = created_mode ?? ChoosePixelFormatPFD(Device, mode, AccelerationType.ICD);
|
|
created_mode = created_mode ?? ChoosePixelFormatPFD(Device, mode, AccelerationType.MCD);
|
|
created_mode = created_mode ?? ChoosePixelFormatPFD(Device, mode, AccelerationType.None);
|
|
|
|
if (created_mode == null)
|
|
{
|
|
throw new GraphicsModeException("The requested GraphicsMode is not supported");
|
|
}
|
|
|
|
return created_mode;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Private Methods
|
|
|
|
#region ChoosePixelFormatARB
|
|
|
|
// Queries pixel formats through the WGL_ARB_pixel_format extension
|
|
// This method only returns accelerated formats. If no format offers
|
|
// 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 desired_mode)
|
|
{
|
|
GraphicsMode created_mode = null;
|
|
GraphicsMode mode = new GraphicsMode(desired_mode);
|
|
if (Wgl.SupportsExtension("WGL_ARB_pixel_format") &&
|
|
Wgl.SupportsFunction("wglChoosePixelFormatARB"))
|
|
{
|
|
int[] format = new int[1];
|
|
int count;
|
|
List<int> attributes = new List<int>();
|
|
bool retry = false;
|
|
|
|
do
|
|
{
|
|
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
|
|
{
|
|
Debug.WriteLine("[WGL] ChoosePixelFormatARB not supported on this context");
|
|
}
|
|
|
|
return created_mode;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region ChoosePixelFormatPFD
|
|
|
|
static bool Compare(int got, int requested, ref int distance)
|
|
{
|
|
bool valid = true;
|
|
if (got == 0 && requested != 0)
|
|
{
|
|
// mode does not support the requested feature.
|
|
valid = false;
|
|
}
|
|
else if (got >= requested)
|
|
{
|
|
// mode supports the requested feature,
|
|
// calculate the distance from an "ideal" mode
|
|
// that matches this feature exactly.
|
|
distance += got - requested;
|
|
}
|
|
else
|
|
{
|
|
// mode supports the requested feature,
|
|
// but at a suboptimal level. For example:
|
|
// - requsted AA = 8x, got 4x
|
|
// - requested color = 32bpp, got 16bpp
|
|
// We can still use this mode but only if
|
|
// no better mode exists.
|
|
const int penalty = 8;
|
|
distance += penalty * Math.Abs(got - requested);
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
static AccelerationType GetAccelerationType(ref PixelFormatDescriptor pfd)
|
|
{
|
|
AccelerationType type = AccelerationType.ICD;
|
|
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_FORMAT) != 0)
|
|
{
|
|
if ((pfd.Flags & PixelFormatDescriptorFlags.GENERIC_ACCELERATED) != 0)
|
|
{
|
|
type = AccelerationType.MCD;
|
|
}
|
|
else
|
|
{
|
|
type = AccelerationType.None;
|
|
}
|
|
}
|
|
return type;
|
|
}
|
|
|
|
GraphicsMode ChoosePixelFormatPFD(IntPtr device, GraphicsMode mode, AccelerationType requested_acceleration_type)
|
|
{
|
|
PixelFormatDescriptor pfd = new PixelFormatDescriptor();
|
|
PixelFormatDescriptorFlags flags = 0;
|
|
flags |= PixelFormatDescriptorFlags.DRAW_TO_WINDOW;
|
|
flags |= PixelFormatDescriptorFlags.SUPPORT_OPENGL;
|
|
|
|
if (mode.Stereo)
|
|
{
|
|
flags |= PixelFormatDescriptorFlags.STEREO;
|
|
}
|
|
|
|
if (System.Environment.OSVersion.Version.Major >= 6 &&
|
|
requested_acceleration_type != AccelerationType.None)
|
|
{
|
|
// Request a compositor-capable mode when running on
|
|
// Vista+ and using hardware acceleration. Without this,
|
|
// some modes will cause the compositor to turn off,
|
|
// which is very annoying to the user.
|
|
// Note: compositor-capable modes require hardware
|
|
// acceleration. Don't set this flag when running
|
|
// with software acceleration (e.g. over Remote Desktop
|
|
// as described in bug https://github.com/opentk/opentk/issues/35)
|
|
flags |= PixelFormatDescriptorFlags.SUPPORT_COMPOSITION;
|
|
}
|
|
|
|
int count = Functions.DescribePixelFormat(device, 1, API.PixelFormatDescriptorSize, ref pfd);
|
|
|
|
int best = 0;
|
|
int best_dist = int.MaxValue;
|
|
for (int index = 1; index <= count; index++)
|
|
{
|
|
int dist = 0;
|
|
bool valid = Functions.DescribePixelFormat(device, index, API.PixelFormatDescriptorSize, ref pfd) != 0;
|
|
valid &= GetAccelerationType(ref pfd) == requested_acceleration_type;
|
|
valid &= (pfd.Flags & flags) == flags;
|
|
valid &= pfd.PixelType == PixelType.RGBA; // indexed modes not currently supported
|
|
// heavily penalize single-buffered modes when the user requests double buffering
|
|
if ((pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) == 0 && mode.Buffers > 1)
|
|
dist += 1000;
|
|
valid &= Compare(pfd.ColorBits, mode.ColorFormat.BitsPerPixel, ref dist);
|
|
valid &= Compare(pfd.RedBits, mode.ColorFormat.Red, ref dist);
|
|
valid &= Compare(pfd.GreenBits, mode.ColorFormat.Green, ref dist);
|
|
valid &= Compare(pfd.BlueBits, mode.ColorFormat.Blue, ref dist);
|
|
valid &= Compare(pfd.AlphaBits, mode.ColorFormat.Alpha, ref dist);
|
|
valid &= Compare(pfd.AccumBits, mode.AccumulatorFormat.BitsPerPixel, ref dist);
|
|
valid &= Compare(pfd.AccumRedBits, mode.AccumulatorFormat.Red, ref dist);
|
|
valid &= Compare(pfd.AccumGreenBits, mode.AccumulatorFormat.Green, ref dist);
|
|
valid &= Compare(pfd.AccumBlueBits, mode.AccumulatorFormat.Blue, ref dist);
|
|
valid &= Compare(pfd.AccumAlphaBits, mode.AccumulatorFormat.Alpha, ref dist);
|
|
valid &= Compare(pfd.DepthBits, mode.Depth, ref dist);
|
|
valid &= Compare(pfd.StencilBits, mode.Stencil, ref dist);
|
|
|
|
if (valid && dist < best_dist)
|
|
{
|
|
best = index;
|
|
best_dist = dist;
|
|
}
|
|
}
|
|
|
|
return DescribePixelFormatPFD(device, ref pfd, best);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region DescribePixelFormatPFD
|
|
|
|
static GraphicsMode DescribePixelFormatPFD(IntPtr device, ref PixelFormatDescriptor pfd,
|
|
int pixelformat)
|
|
{
|
|
GraphicsMode created_mode = null;
|
|
if (Functions.DescribePixelFormat(device, pixelformat, pfd.Size, ref pfd) > 0)
|
|
{
|
|
created_mode = new GraphicsMode(
|
|
new IntPtr(pixelformat),
|
|
new ColorFormat(pfd.RedBits, pfd.GreenBits, pfd.BlueBits, pfd.AlphaBits),
|
|
pfd.DepthBits,
|
|
pfd.StencilBits,
|
|
0, // MSAA not supported when using PixelFormatDescriptor
|
|
new ColorFormat(pfd.AccumRedBits, pfd.AccumGreenBits, pfd.AccumBlueBits, pfd.AccumAlphaBits),
|
|
(pfd.Flags & PixelFormatDescriptorFlags.DOUBLEBUFFER) != 0 ? 2 : 1,
|
|
(pfd.Flags & PixelFormatDescriptorFlags.STEREO) != 0);
|
|
}
|
|
return created_mode;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region DescribePixelFormatARB
|
|
|
|
GraphicsMode DescribePixelFormatARB(IntPtr device, int pixelformat)
|
|
{
|
|
GraphicsMode created_mode = null;
|
|
// See http://www.opengl.org/registry/specs/ARB/wgl_pixel_format.txt for more details
|
|
if (Wgl.SupportsFunction("wglGetPixelFormatAttribivARB"))
|
|
{
|
|
// Define the list of attributes we are interested in.
|
|
// The results will be stored in the 'values' array below.
|
|
int[] attribs = new int[]
|
|
{
|
|
(int)WGL_ARB_pixel_format.AccelerationArb,
|
|
|
|
(int)WGL_ARB_pixel_format.RedBitsArb,
|
|
(int)WGL_ARB_pixel_format.GreenBitsArb,
|
|
(int)WGL_ARB_pixel_format.BlueBitsArb,
|
|
(int)WGL_ARB_pixel_format.AlphaBitsArb,
|
|
(int)WGL_ARB_pixel_format.ColorBitsArb,
|
|
|
|
(int)WGL_ARB_pixel_format.DepthBitsArb,
|
|
(int)WGL_ARB_pixel_format.StencilBitsArb,
|
|
|
|
(int)WGL_ARB_multisample.SampleBuffersArb,
|
|
(int)WGL_ARB_multisample.SamplesArb,
|
|
|
|
(int)WGL_ARB_pixel_format.AccumRedBitsArb,
|
|
(int)WGL_ARB_pixel_format.AccumGreenBitsArb,
|
|
(int)WGL_ARB_pixel_format.AccumBlueBitsArb,
|
|
(int)WGL_ARB_pixel_format.AccumAlphaBitsArb,
|
|
(int)WGL_ARB_pixel_format.AccumBitsArb,
|
|
|
|
(int)WGL_ARB_pixel_format.DoubleBufferArb,
|
|
(int)WGL_ARB_pixel_format.StereoArb,
|
|
0
|
|
};
|
|
|
|
// Allocate storage for the results of GetPixelFormatAttrib queries
|
|
int[] values = new int[attribs.Length];
|
|
|
|
// Get the format attributes for this pixel format
|
|
if (!Wgl.Arb.GetPixelFormatAttrib(device, pixelformat, 0, attribs.Length - 1, attribs, values))
|
|
{
|
|
Debug.Print("[Warning] Failed to detect attributes for PixelFormat: {0}.", pixelformat);
|
|
}
|
|
|
|
// Skip formats that don't offer full hardware acceleration
|
|
WGL_ARB_pixel_format acceleration = (WGL_ARB_pixel_format)values[0];
|
|
if (acceleration == WGL_ARB_pixel_format.FullAccelerationArb)
|
|
{
|
|
// Construct a new GraphicsMode to describe this format
|
|
created_mode = new GraphicsMode(new IntPtr(pixelformat),
|
|
new ColorFormat(values[1], values[2], values[3], values[4]),
|
|
values[6],
|
|
values[7],
|
|
values[8] != 0 ? values[9] : 0,
|
|
new ColorFormat(values[10], values[11], values[12], values[13]),
|
|
values[15] == 1 ? 2 : 1,
|
|
values[16] == 1 ? true : false);
|
|
}
|
|
}
|
|
return created_mode;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
}
|
|
}
|