public override void SwapBuffers()
{
if (_platform.DisplayMode != DisplayMode.Fullscreen)
{
bool dwmComposition;
// DWM Composition is always enabled on Win8+
if (Win32Platform.IsWindows8OrGreater)
{
dwmComposition = true;
}
else
{
HResult result = DwmApi.DwmIsCompositionEnabled(out dwmComposition);
if (result != HResult.S_OK)
{
dwmComposition = false;
}
}
if (dwmComposition)
{
for (var i = 0; i < SwapInterval; i++)
{
DwmApi.DwmFlush();
}
}
}
Gdi32.SwapBuffers(_dc);
}
public static unsafe IntPtr CreateDIBSection(IntPtr hdc, ref BitmapInfoHeader bitmapInfoHeader,
DibBmiColorUsageFlag iUsage, out IntPtr ppvBits, IntPtr hSection, uint dwOffset)
{
fixed(BitmapInfoHeader *bitmapInfoHeaderPtr = &bitmapInfoHeader)
{
return(Gdi32Methods.CreateDIBSection(hdc, new IntPtr(bitmapInfoHeaderPtr), iUsage, out ppvBits, hSection,
dwOffset));
}
}
public static IntPtr CreateDIBSection(IntPtr hdc, ref BitmapInfo bitmapInfo,
DibBmiColorUsageFlag iUsage, out IntPtr ppvBits, IntPtr hSection, uint dwOffset)
{
using (var pbmi = BitmapInfo.NativeAlloc(ref bitmapInfo))
{
return(Gdi32Methods.CreateDIBSection(hdc, pbmi.GetDangerousHandle(), iUsage, out ppvBits, hSection,
dwOffset));
}
}
public static IntPtr CreateDIBitmap(IntPtr hdc, ref BitmapInfoHeader
lpbmih, uint fdwInit, byte[] lpbInit, ref BitmapInfo bitmapInfo,
DibBmiColorUsageFlag fuUsage)
{
using (var pbmi = BitmapInfo.NativeAlloc(ref bitmapInfo))
{
return(Gdi32Methods.CreateDIBitmap(hdc, ref lpbmih, fdwInit, lpbInit, pbmi.GetDangerousHandle(),
fuUsage));
}
}
public static unsafe int SetDIBitsToDevice(IntPtr hdc, int xDest, int yDest, uint
dwWidth, uint dwHeight, int xSrc, int ySrc, uint uStartScan, uint cScanLines,
byte[] lpvBits, ref BitmapInfoHeader bitmapInfoHeader, DibBmiColorUsageFlag fuColorUse)
{
fixed(BitmapInfoHeader *bitmapInfoHeaderPtr = &bitmapInfoHeader)
{
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest,
dwWidth, dwHeight, xSrc, ySrc, uStartScan, cScanLines, lpvBits, new IntPtr(bitmapInfoHeaderPtr),
fuColorUse));
}
}
public static int SetDIBitsToDevice(IntPtr hdc, int xDest, int yDest, uint
dwWidth, uint dwHeight, int xSrc, int ySrc, uint uStartScan, uint cScanLines,
byte[] lpvBits, ref BitmapInfo bitmapInfo, DibBmiColorUsageFlag fuColorUse)
{
using (var pbmi = BitmapInfo.NativeAlloc(ref bitmapInfo))
{
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest,
dwWidth, dwHeight, xSrc, ySrc, uStartScan, cScanLines, lpvBits, pbmi.GetDangerousHandle(),
fuColorUse));
}
}
public Win32Monitor(DisplayDeviceW adapter, DisplayDeviceW?display)
{
Name = display != null ? display.Value.DeviceString : adapter.DeviceString;
AdapterName = adapter.DeviceName;
DeviceName = display == null ? "<<Unknown Device>>" : display.Value.DeviceName;
Debug.Assert(Name != null);
var dm = new DeviceMode();
dm.dmSize = (short)Marshal.SizeOf(dm);
User32.EnumDisplaySettingsW(adapter.DeviceName.PadRight(32, '\0'), (int)DisplaySettings.CurrentSettings, ref dm);
Win32Platform.CheckError("Enumerating display settings.");
Width = dm.dmPelsWidth;
Height = dm.dmPelsHeight;
IntPtr dc = Gdi32.CreateDCW("DISPLAY", adapter.DeviceName, null, IntPtr.Zero);
Debug.Assert(dc != IntPtr.Zero);
if (Win32Platform.IsWindows81OrGreater)
{
WidthPhysical = Gdi32.GetDeviceCaps(dc, DeviceCap.HorizontalSize);
HeightPhysical = Gdi32.GetDeviceCaps(dc, DeviceCap.VertSize);
}
else
{
WidthPhysical = (int)(dm.dmPelsWidth * 25.4f / Gdi32.GetDeviceCaps(dc, DeviceCap.LogPixelsX));
HeightPhysical = (int)(dm.dmPelsHeight * 25.4f / Gdi32.GetDeviceCaps(dc, DeviceCap.LogPixelsY));
}
Gdi32.DeleteDC(dc);
if ((adapter.StateFlags & DisplayDeviceStateFlags.ModesPruned) != 0)
{
ModesPruned = true;
}
var rect = new Rect
{
Left = dm.dmPosition.X,
Top = dm.dmPosition.Y,
Right = dm.dmPosition.X + dm.dmPelsWidth,
Bottom = dm.dmPosition.Y + dm.dmPelsHeight
};
User32.EnumDisplayMonitors(IntPtr.Zero, ref rect, MonitorCallback, null);
Win32Platform.CheckError("Creating monitor.");
}
public static unsafe int SetRgbBitsToDevice(IntPtr hdc, int width, int height, IntPtr pixelBufferPtr,
int xSrc = 0,
int ySrc = 0, int xDest = 0, int yDest = 0, bool isRgba = true, bool isImageTopDown = true)
{
var bi = new BitmapInfoHeader
{
Size = (uint)Marshal.SizeOf <BitmapInfoHeader>(),
Width = width,
Height = isImageTopDown ? -height : height,
CompressionMode = BitmapCompressionMode.BI_RGB,
BitCount = isRgba ? (ushort)32 : (ushort)24,
Planes = 1
};
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest, (uint)width, (uint)height, xSrc, ySrc, 0,
(uint)height, pixelBufferPtr, new IntPtr(&bi),
DibBmiColorUsageFlag.DIB_RGB_COLORS));
}
public static void GetMonitorContentScale(IntPtr monitor, out float scaleX, out float scaleY)
{
uint xDpi, yDpi;
if (Win32Platform.IsWindows81OrGreater)
{
ShCore.GetDpiForMonitor(monitor, MonitorDpiType.MDT_EFFECTIVE_DPI, out xDpi, out yDpi);
}
else
{
IntPtr dc = User32.GetDC(IntPtr.Zero);
xDpi = (uint)Gdi32.GetDeviceCaps(dc, DeviceCap.LogPixelsX);
yDpi = (uint)Gdi32.GetDeviceCaps(dc, DeviceCap.LogPixelsY);
User32.ReleaseDC(IntPtr.Zero, dc);
}
scaleX = xDpi / (float)Win32Platform.DEFAULT_DPI;
scaleY = yDpi / (float)Win32Platform.DEFAULT_DPI;
}
public void Init(IntPtr windowHandle, Win32Platform platform)
{
_platform = platform;
// This is how you request a context version from MESA - lol
// This needs to be pInvoked as Environment.SetEnvironmentVariable doesn't affect native getenv calls.
_putenv_s("MESA_GL_VERSION_OVERRIDE", "3.3FC");
// Unload old OpenGL, if any.
IntPtr loadedOpenGl = Kernel32.GetModuleHandle("opengl32.dll");
var counter = 0;
if (loadedOpenGl != IntPtr.Zero)
{
Engine.Log.Info("OpenGL32.dll is already loaded. Attempting to unload...", MessageSource.WGallium);
}
while (loadedOpenGl != IntPtr.Zero)
{
Kernel32.FreeLibrary(loadedOpenGl);
loadedOpenGl = Kernel32.GetModuleHandle("opengl32.dll");
counter++;
if (counter < 100)
{
continue;
}
Engine.Log.Error("Couldn't unload the loaded OpenGL32.dll. Gallium context couldn't be created.", MessageSource.WGallium);
return;
}
if (counter > 0)
{
Engine.Log.Info($"OpenGL32.dll was unloaded after {counter} attempts.", MessageSource.WGallium);
}
// Load library.
_openGlLibrary = _platform.LoadLibrary("mesa");
if (_openGlLibrary == IntPtr.Zero)
{
Engine.Log.Error("Couldn't load mesa.", MessageSource.WGallium);
return;
}
var createContext = _platform.GetFunctionByName <WglFunctions.WglCreateContext>(_openGlLibrary, "wglCreateContext");
_deleteContext = _platform.GetFunctionByName <WglFunctions.WglDeleteContext>(_openGlLibrary, "wglDeleteContext");
_getProcAddress = _platform.GetFunctionByName <WglFunctions.WglGetProcAddress>(_openGlLibrary, "wglGetProcAddress");
_makeCurrent = _platform.GetFunctionByName <WglFunctions.WglMakeCurrent>(_openGlLibrary, "wglMakeCurrent");
_swapIntervalExt = NativeHelpers.GetFunctionByPtr <WglFunctions.SwapInternalExt>(_getProcAddress("wglSwapIntervalEXT"));
// Setup context.
_dc = User32.GetDC(windowHandle);
if (_dc == IntPtr.Zero)
{
Win32Platform.CheckError("WGL: Could not get window dc.", true);
}
int pixelFormatIdx = SupportedPixelFormat(_dc);
if (pixelFormatIdx == 0)
{
return;
}
var pfd = new PixelFormatDescriptor();
pfd.NSize = (ushort)Marshal.SizeOf(pfd);
if (Gdi32.DescribePixelFormat(_dc, pixelFormatIdx, (uint)sizeof(PixelFormatDescriptor), ref pfd) == 0)
{
Win32Platform.CheckError("WGL: Failed to retrieve PFD for the selected pixel format.", true);
return;
}
if (!Gdi32.SetPixelFormat(_dc, pixelFormatIdx, ref pfd))
{
Win32Platform.CheckError("WGL: Could not set pixel format.", true);
}
const string contextName = "Gallium-OpenGL";
_contextHandle = createContext(_dc);
if (_contextHandle == IntPtr.Zero)
{
Win32Platform.CheckError(contextName, true);
}
Win32Platform.CheckError("Checking if context creation passed.");
Engine.Log.Trace($"Requested {contextName} using pixel format id {pixelFormatIdx}", MessageSource.Win32);
Valid = true;
}
/// <summary>
/// Finds the index of the supported pixel format closest to the requested pixel format.
/// </summary>
/// <param name="dc">The window's handle.</param>
/// <returns>The index of the pixel format to use.</returns>
private static int SupportedPixelFormat(IntPtr dc)
{
var usableConfigs = new List <FramebufferConfig>();
// Get the number of formats.
int nativeCount = Gdi32.DescribePixelFormat(dc, 1, (uint)sizeof(PixelFormatDescriptor), IntPtr.Zero);
for (var i = 0; i < nativeCount; i++)
{
var fbConfig = new FramebufferConfig();
var pfd = new PixelFormatDescriptor();
pfd.NSize = (ushort)Marshal.SizeOf(pfd);
if (Gdi32.DescribePixelFormat(dc, i + 1, (uint)sizeof(PixelFormatDescriptor), ref pfd) == 0)
{
Win32Platform.CheckError("Gallium: Could not describe pixel format.", true);
continue;
}
// We need both of these to be supported.
if ((pfd.DwFlags & PixelFormatFlags.DrawToWindow) == 0 ||
(pfd.DwFlags & PixelFormatFlags.SupportOpenGl) == 0)
{
continue;
}
// Should be GenericAccelerated, and mustn't be generic.
if ((pfd.DwFlags & PixelFormatFlags.GenericAccelerated) == 0 &&
(pfd.DwFlags & PixelFormatFlags.Generic) != 0)
{
continue;
}
if (pfd.PixelType != (byte)PixelFormatFlags.RGBA)
{
continue;
}
fbConfig.RedBits = pfd.CRedBits;
fbConfig.GreenBits = pfd.CGreenBits;
fbConfig.BlueBits = pfd.CBlueBits;
fbConfig.AlphaBits = pfd.CAlphaBits;
fbConfig.DepthBits = pfd.CDepthBits;
fbConfig.StencilBits = pfd.CStencilBits;
fbConfig.AccumRedBits = pfd.CAccumRedBits;
fbConfig.AccumGreenBits = pfd.CAccumGreenBits;
fbConfig.AccumBlueBits = pfd.CAccumBlueBits;
fbConfig.AccumAlphaBits = pfd.CAccumAlphaBits;
if ((pfd.DwFlags & PixelFormatFlags.Stereo) != 0)
{
fbConfig.Stereo = true;
}
if ((pfd.DwFlags & PixelFormatFlags.DoubleBuffer) != 0)
{
fbConfig.Doublebuffer = true;
}
fbConfig.Handle = i + 1;
usableConfigs.Add(fbConfig);
}
if (usableConfigs.Count == 0)
{
Engine.Log.Error("The driver doesn't seem to support OpenGL.", MessageSource.WGallium);
return(0);
}
FramebufferConfig closestConfig = ChoosePixelFormat(usableConfigs);
if (closestConfig != null)
{
return(closestConfig.Handle);
}
Engine.Log.Error("Couldn't find suitable pixel format.", MessageSource.WGallium);
return(0);
}
/// <summary>
/// Initialize the conflict from the Windows window handle and platform reference.
/// </summary>
public void Init(IntPtr nativeDeviceHandle, IntPtr windowHandle, Win32Platform platform)
{
_platform = platform;
// Load WGL.
_openGlLibrary = _platform.LoadLibrary("opengl32.dll");
if (_openGlLibrary == IntPtr.Zero)
{
Engine.Log.Error("opengl32.dll not found.", MessageSource.WGallium);
return;
}
var createContext = _platform.GetFunctionByName <WglFunctions.WglCreateContext>(_openGlLibrary, "wglCreateContext");
_deleteContext = _platform.GetFunctionByName <WglFunctions.WglDeleteContext>(_openGlLibrary, "wglDeleteContext");
_getProcAddress = _platform.GetFunctionByName <WglFunctions.WglGetProcAddress>(_openGlLibrary, "wglGetProcAddress");
_getCurrentDc = _platform.GetFunctionByName <WglFunctions.WglGetCurrentDc>(_openGlLibrary, "wglGetCurrentDC");
_getCurrentContext = _platform.GetFunctionByName <WglFunctions.WglGetCurrentContext>(_openGlLibrary, "wglGetCurrentContext");
_makeCurrent = _platform.GetFunctionByName <WglFunctions.WglMakeCurrent>(_openGlLibrary, "wglMakeCurrent");
// A dummy context has to be created for opengl32.dll to load the. OpenGL ICD, from which we can then query WGL extensions.
// This code will accept the Microsoft GDI ICD;
Debug.Assert(nativeDeviceHandle != IntPtr.Zero);
var pfd = new PixelFormatDescriptor();
pfd.NSize = (ushort)Marshal.SizeOf(pfd);
pfd.NVersion = 1;
pfd.DwFlags = PixelFormatFlags.DrawToWindow | PixelFormatFlags.SupportOpenGl | PixelFormatFlags.DoubleBuffer;
pfd.PixelType = (byte)PixelFormatFlags.RGBA;
pfd.CColorBits = 24;
if (!Gdi32.SetPixelFormat(nativeDeviceHandle, Gdi32.ChoosePixelFormat(nativeDeviceHandle, ref pfd), ref pfd))
{
Win32Platform.CheckError("WGL: Could not set pixel format on dummy context.", true);
}
// Establish dummy context.
IntPtr rc = createContext(nativeDeviceHandle);
if (rc == IntPtr.Zero)
{
Win32Platform.CheckError("WGL: Could not create dummy context.", true);
}
if (!_makeCurrent(nativeDeviceHandle, rc))
{
_deleteContext(rc);
Win32Platform.CheckError("Could not make dummy context current.", true);
return;
}
// Check supported version.
KhronosVersion glGetString = Gl.QueryVersionExternal(GetProcAddress);
if (glGetString != null)
{
if (glGetString.Major < 3)
{
_deleteContext(rc);
Engine.Log.Error("Wgl support is lower than 3.0", MessageSource.Wgl);
return;
}
}
else
{
Engine.Log.Warning("Couldn't verify context version.", MessageSource.Wgl);
}
Engine.Log.Trace("Loaded functions.", MessageSource.Wgl);
// Functions must be loaded first as they're needed to retrieve the extension string that tells us whether the functions are supported
_getExtensionsStringExt = NativeHelpers.GetFunctionByPtr <WglFunctions.GetExtensionsStringExt>(_getProcAddress("wglGetExtensionsStringEXT"));
_getExtensionsStringArb = NativeHelpers.GetFunctionByPtr <WglFunctions.GetExtensionsStringArb>(_getProcAddress("wglGetExtensionsStringARB"));
_createContextAttribs = NativeHelpers.GetFunctionByPtr <WglFunctions.CreateContextAttribs>(_getProcAddress("wglCreateContextAttribsARB"));
_swapIntervalExt = NativeHelpers.GetFunctionByPtr <WglFunctions.SwapInternalExt>(_getProcAddress("wglSwapIntervalEXT"));
_getPixelFormatAttribivArb = NativeHelpers.GetFunctionByPtr <WglFunctions.GetPixelFormatAttributes>(_getProcAddress("wglGetPixelFormatAttribivARB"));
WglGetSupportedExtensions();
_arbMultisample = WglSupportedExtension("WGL_ARB_multisample");
_arbFramebufferSRgb = WglSupportedExtension("WGL_ARB_framebuffer_sRGB");
_extFramebufferSRgb = WglSupportedExtension("WGL_EXT_framebuffer_sRGB");
_arbCreateContextProfile = WglSupportedExtension("WGL_ARB_create_context_profile");
_arbPixelFormat = WglSupportedExtension("WGL_ARB_pixel_format");
_autoVSyncExtension = WglSupportedExtension("WGL_EXT_swap_control_tear");
bool arbCreateContext = WglSupportedExtension("WGL_ARB_create_context");
// Dispose of dummy context.
_deleteContext(rc);
Engine.Log.Trace("Extensions loaded.", MessageSource.Wgl);
// Start creating actual context.
_dc = User32.GetDC(windowHandle);
if (_dc == IntPtr.Zero)
{
Win32Platform.CheckError("WGL: Could not get window dc.", true);
}
int pixelFormatIdx = SupportedPixelFormat(_dc);
if (pixelFormatIdx == 0)
{
return;
}
if (Gdi32.DescribePixelFormat(_dc, pixelFormatIdx, (uint)sizeof(PixelFormatDescriptor), ref pfd) == 0)
{
Win32Platform.CheckError("WGL: Failed to retrieve PFD for the selected pixel format.", true);
return;
}
if (!Gdi32.SetPixelFormat(_dc, pixelFormatIdx, ref pfd))
{
Win32Platform.CheckError("WGL: Could not set pixel format.", true);
return;
}
Engine.Log.Trace($"Context ARB: {arbCreateContext}, Profile ARB: {_arbCreateContextProfile}", MessageSource.Wgl);
if (arbCreateContext)
{
// Context configurations to try.
var contextFactory = new List <GLContextDescription>(2)
{
new GLContextDescription {
Profile = GLProfile.Core, Debug = Engine.Configuration.GlDebugMode
},
new GLContextDescription {
Profile = GLProfile.Any
}
};
for (var i = 0; i < contextFactory.Count; i++)
{
GLContextDescription current = contextFactory[i];
IntPtr handle = CreateContextArb(current);
if (handle == IntPtr.Zero)
{
continue;
}
_contextHandle = handle;
Engine.Log.Info($"Created WGL context - {current}", MessageSource.Wgl);
break;
}
// If that failed too, look for errors.
// Fallback to legacy creation.
if (_contextHandle == IntPtr.Zero)
{
Win32Platform.CheckError("Creating WGL context");
}
}
if (_contextHandle == IntPtr.Zero)
{
_contextHandle = createContext(_dc);
if (_contextHandle == IntPtr.Zero)
{
Win32Platform.CheckError("Creating WGL legacy context", true);
}
Engine.Log.Info("WGL legacy context created.", MessageSource.Wgl);
}
Win32Platform.CheckError("Checking if context creation passed.");
Valid = true;
}
/// <summary>
/// Finds the index of the supported pixel format closest to the requested pixel format.
/// </summary>
/// <param name="dc">The window's handle.</param>
/// <returns>The index of the pixel format to use.</returns>
private int SupportedPixelFormat(IntPtr dc)
{
var nativeCount = 0;
var usableConfigs = new List <FramebufferConfig>();
// Check whether we can use the modern API or not.
if (_arbPixelFormat)
{
if (_getPixelFormatAttribivArb == null)
{
throw new Exception("WGL: Unsupported graphics context, getPixelFormatAttribivArb is missing!");
}
int nPf = FLAG_NUMBER_PIXEL_FORMATS_ARB;
if (!_getPixelFormatAttribivArb(dc, 1, 0, 1, &nPf, &nativeCount))
{
Win32Platform.CheckError("WGL: Failed to retrieve pixel format attribute.", true);
return(0);
}
var foundAttributes = new List <int>
{
(int)WglAttributes.SupportOpenGLArb,
(int)WglAttributes.DrawToWindowArb,
(int)WglAttributes.PixelTypeArb,
(int)WglAttributes.AccelerationArb,
(int)WglAttributes.RedBitsArb,
(int)WglAttributes.RedShiftArb,
(int)WglAttributes.GreenBitsArb,
(int)WglAttributes.GreenShiftArb,
(int)WglAttributes.BlueBitsArb,
(int)WglAttributes.BlueShiftArb,
(int)WglAttributes.AlphaBitsArb,
(int)WglAttributes.AlphaShiftArb,
(int)WglAttributes.DepthBitsArb,
(int)WglAttributes.StencilBitsArb,
(int)WglAttributes.AccumBitsArb,
(int)WglAttributes.AccumRedBitsArb,
(int)WglAttributes.AccumGreenBitsArb,
(int)WglAttributes.AccumBlueBitsArb,
(int)WglAttributes.AccumAlphaBitsArb,
(int)WglAttributes.AuxBuffersArb,
(int)WglAttributes.StereoArb,
(int)WglAttributes.DoubleBufferArb
};
if (_arbMultisample)
{
foundAttributes.Add((int)WglAttributes.SamplesArb);
}
if (_arbFramebufferSRgb || _extFramebufferSRgb)
{
foundAttributes.Add((int)WglAttributes.FramebufferSrgbCapableArb);
}
int[] attributes = foundAttributes.ToArray();
for (var i = 0; i < nativeCount; i++)
{
var fbConfig = new FramebufferConfig();
// Get pixel format attributes through "modern" extension
var values = new int[attributes.Length];
fixed(int *vPtr = &values[0])
{
fixed(int *attrPtr = &attributes[0])
{
if (!_getPixelFormatAttribivArb(dc, i + 1, 0, (uint)attributes.Length, attrPtr, vPtr))
{
Win32Platform.CheckError($"WGL: Failed to retrieve pixel format attribute - for config {i}.", true);
return(0);
}
}
}
if (FindAttributeValue(attributes, values, WglAttributes.SupportOpenGLArb) == 0 ||
FindAttributeValue(attributes, values, WglAttributes.DrawToWindowArb) == 0)
{
continue;
}
if (FindAttributeValue(attributes, values, WglAttributes.PixelTypeArb) != (int)WglAttributeValues.TypeRgbaArb)
{
continue;
}
if (FindAttributeValue(attributes, values, WglAttributes.AccelerationArb) == (int)WglAttributeValues.NoAccelerationArb)
{
continue;
}
fbConfig.RedBits = FindAttributeValue(attributes, values, WglAttributes.RedBitsArb);
fbConfig.GreenBits = FindAttributeValue(attributes, values, WglAttributes.GreenBitsArb);
fbConfig.BlueBits = FindAttributeValue(attributes, values, WglAttributes.BlueBitsArb);
fbConfig.AlphaBits = FindAttributeValue(attributes, values, WglAttributes.AlphaBitsArb);
fbConfig.DepthBits = FindAttributeValue(attributes, values, WglAttributes.DepthBitsArb);
fbConfig.StencilBits = FindAttributeValue(attributes, values, WglAttributes.StencilBitsArb);
fbConfig.AccumRedBits = FindAttributeValue(attributes, values, WglAttributes.AccumRedBitsArb);
fbConfig.AccumGreenBits = FindAttributeValue(attributes, values, WglAttributes.AccumGreenBitsArb);
fbConfig.AccumBlueBits = FindAttributeValue(attributes, values, WglAttributes.AccumBlueBitsArb);
fbConfig.AccumAlphaBits = FindAttributeValue(attributes, values, WglAttributes.AccumAlphaBitsArb);
fbConfig.AuxBuffers = FindAttributeValue(attributes, values, WglAttributes.AuxBuffersArb);
fbConfig.Stereo = FindAttributeValue(attributes, values, WglAttributes.StereoArb) != 0;
fbConfig.Doublebuffer = FindAttributeValue(attributes, values, WglAttributes.DoubleBufferArb) != 0;
if (_arbMultisample)
{
fbConfig.Samples = FindAttributeValue(attributes, values, WglAttributes.SamplesArb);
}
if (_arbFramebufferSRgb ||
_extFramebufferSRgb)
{
if (FindAttributeValue(attributes, values, WglAttributes.FramebufferSrgbCapableArb) != 0)
{
fbConfig.SRgb = true;
}
}
fbConfig.Handle = i + 1;
usableConfigs.Add(fbConfig);
}
}
else
{
nativeCount = Gdi32.DescribePixelFormat(dc, 1, (uint)sizeof(PixelFormatDescriptor), IntPtr.Zero);
for (var i = 0; i < nativeCount; i++)
{
var fbConfig = new FramebufferConfig();
var pfd = new PixelFormatDescriptor();
pfd.NSize = (ushort)Marshal.SizeOf(pfd);
if (Gdi32.DescribePixelFormat(dc, i + 1, (uint)sizeof(PixelFormatDescriptor), ref pfd) == 0)
{
Win32Platform.CheckError("WGL: Could not describe pixel format.", true);
continue;
}
// We need both of these to be supported.
if ((pfd.DwFlags & PixelFormatFlags.DrawToWindow) == 0 ||
(pfd.DwFlags & PixelFormatFlags.SupportOpenGl) == 0)
{
continue;
}
// Should be GenericAccelerated, and mustn't be generic.
if ((pfd.DwFlags & PixelFormatFlags.GenericAccelerated) == 0 &&
(pfd.DwFlags & PixelFormatFlags.Generic) != 0)
{
continue;
}
if (pfd.PixelType != (byte)PixelFormatFlags.RGBA)
{
continue;
}
fbConfig.RedBits = pfd.CRedBits;
fbConfig.GreenBits = pfd.CGreenBits;
fbConfig.BlueBits = pfd.CBlueBits;
fbConfig.AlphaBits = pfd.CAlphaBits;
fbConfig.DepthBits = pfd.CDepthBits;
fbConfig.StencilBits = pfd.CStencilBits;
fbConfig.AccumRedBits = pfd.CAccumRedBits;
fbConfig.AccumGreenBits = pfd.CAccumGreenBits;
fbConfig.AccumBlueBits = pfd.CAccumBlueBits;
fbConfig.AccumAlphaBits = pfd.CAccumAlphaBits;
if ((pfd.DwFlags & PixelFormatFlags.Stereo) != 0)
{
fbConfig.Stereo = true;
}
if ((pfd.DwFlags & PixelFormatFlags.DoubleBuffer) != 0)
{
fbConfig.Doublebuffer = true;
}
fbConfig.Handle = i + 1;
usableConfigs.Add(fbConfig);
}
}
if (usableConfigs.Count == 0)
{
Engine.Log.Error("The driver doesn't seem to support OpenGL.", MessageSource.Wgl);
return(0);
}
FramebufferConfig closestConfig = ChoosePixelFormat(usableConfigs);
if (closestConfig != null)
{
return(closestConfig.Handle);
}
Engine.Log.Error("Couldn't find suitable pixel format.", MessageSource.Wgl);
return(0);
}
public static IntPtr CreateSolidBrush(uint r, uint g, uint b)
{
return(Gdi32Methods.CreateSolidBrush(Bgr32(r, g, b)));
}
public static IntPtr GetStockObject(StockObject fnObject)
{
return(Gdi32Methods.GetStockObject((int)fnObject));
}
