// Returns a UTF-8 string version of the specified wide string
//
char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source)
{
char* target;
int length;
length = WideCharToMultiByte(CP_UTF8, 0, source, -1, NULL, 0, NULL, NULL);
if (!length)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string to UTF-8");
return NULL;
}
target = calloc(length, 1);
if (!WideCharToMultiByte(CP_UTF8, 0, source, -1, target, length, NULL, NULL))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string to UTF-8");
free(target);
return NULL;
}
return target;
}
// Returns a wide string version of the specified UTF-8 string
//
WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source)
{
WCHAR* target;
int length;
length = MultiByteToWideChar(CP_UTF8, 0, source, -1, NULL, 0);
if (!length)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string from UTF-8");
return NULL;
}
target = calloc(length, sizeof(WCHAR));
if (!MultiByteToWideChar(CP_UTF8, 0, source, -1, target, length))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string from UTF-8");
free(target);
return NULL;
}
return target;
}
// Initialize WGL
//
GLFWbool _glfwInitWGL(void)
{
if (_glfw.wgl.instance)
return GLFW_TRUE;
_glfw.wgl.instance = LoadLibraryA("opengl32.dll");
if (!_glfw.wgl.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to load opengl32.dll");
return GLFW_FALSE;
}
_glfw.wgl.CreateContext = (PFN_wglCreateContext)
GetProcAddress(_glfw.wgl.instance, "wglCreateContext");
_glfw.wgl.DeleteContext = (PFN_wglDeleteContext)
GetProcAddress(_glfw.wgl.instance, "wglDeleteContext");
_glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress)
GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress");
_glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC)
GetProcAddress(_glfw.wgl.instance, "wglGetCurrentDC");
_glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent)
GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent");
_glfw.wgl.ShareLists = (PFN_wglShareLists)
GetProcAddress(_glfw.wgl.instance, "wglShareLists");
return GLFW_TRUE;
}
static void makeContextCurrentWGL(_GLFWwindow* window)
{
if (window)
{
if (wglMakeCurrent(window->context.wgl.dc, window->context.wgl.handle))
_glfwPlatformSetTls(&_glfw.contextSlot, window);
else
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to make context current");
_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
}
}
else
{
if (!wglMakeCurrent(NULL, NULL))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to clear current context");
}
_glfwPlatformSetTls(&_glfw.contextSlot, NULL);
}
}
GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls)
{
assert(tls->win32.allocated == GLFW_FALSE);
tls->win32.index = TlsAlloc();
if (tls->win32.index == TLS_OUT_OF_INDEXES)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to allocate TLS index");
return GLFW_FALSE;
}
tls->win32.allocated = GLFW_TRUE;
return GLFW_TRUE;
}
// Creates a dummy window for behind-the-scenes work
//
static GLFWbool createHelperWindow(void)
{
MSG msg;
_glfw.win32.helperWindowHandle =
CreateWindowExW(WS_EX_OVERLAPPEDWINDOW,
_GLFW_WNDCLASSNAME,
L"GLFW message window",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
0, 0, 1, 1,
NULL, NULL,
GetModuleHandleW(NULL),
NULL);
if (!_glfw.win32.helperWindowHandle)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create helper window");
return GLFW_FALSE;
}
// HACK: The command to the first ShowWindow call is ignored if the parent
// process passed along a STARTUPINFO, so clear that with a no-op call
ShowWindow(_glfw.win32.helperWindowHandle, SW_HIDE);
// Register for HID device notifications
{
DEV_BROADCAST_DEVICEINTERFACE_W dbi;
ZeroMemory(&dbi, sizeof(dbi));
dbi.dbcc_size = sizeof(dbi);
dbi.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
dbi.dbcc_classguid = GUID_DEVINTERFACE_HID;
_glfw.win32.deviceNotificationHandle =
RegisterDeviceNotificationW(_glfw.win32.helperWindowHandle,
(DEV_BROADCAST_HDR*) &dbi,
DEVICE_NOTIFY_WINDOW_HANDLE);
}
while (PeekMessageW(&msg, _glfw.win32.helperWindowHandle, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
return GLFW_TRUE;
}
// Return the value corresponding to the specified attribute
//
static int findPixelFormatAttribValue(const int* attribs,
int attribCount,
const int* values,
int attrib)
{
int i;
for (i = 0; i < attribCount; i++)
{
if (attribs[i] == attrib)
return values[i];
}
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Unknown pixel format attribute requested");
return 0;
}
// Returns the specified attribute of the specified pixel format
//
static int getPixelFormatAttrib(_GLFWwindow* window, int pixelFormat, int attrib)
{
int value = 0;
assert(_glfw.wgl.ARB_pixel_format);
if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
pixelFormat,
0, 1, &attrib, &value))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve pixel format attribute");
return 0;
}
return value;
}
// Load necessary libraries (DLLs)
//
static GLFWbool loadLibraries(void)
{
_glfw.win32.winmm.instance = LoadLibraryA("winmm.dll");
if (!_glfw.win32.winmm.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR, "Win32: Failed to load winmm.dll");
return GLFW_FALSE;
}
_glfw.win32.winmm.GetTime = (PFN_timeGetTime)
GetProcAddress(_glfw.win32.winmm.instance, "timeGetTime");
_glfw.win32.user32.instance = LoadLibraryA("user32.dll");
if (!_glfw.win32.user32.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR, "Win32: Failed to load user32.dll");
return GLFW_FALSE;
}
_glfw.win32.user32.SetProcessDPIAware = (PFN_SetProcessDPIAware)
GetProcAddress(_glfw.win32.user32.instance, "SetProcessDPIAware");
_glfw.win32.user32.ChangeWindowMessageFilterEx = (PFN_ChangeWindowMessageFilterEx)
GetProcAddress(_glfw.win32.user32.instance, "ChangeWindowMessageFilterEx");
_glfw.win32.dinput8.instance = LoadLibraryA("dinput8.dll");
if (_glfw.win32.dinput8.instance)
{
_glfw.win32.dinput8.Create = (PFN_DirectInput8Create)
GetProcAddress(_glfw.win32.dinput8.instance, "DirectInput8Create");
}
{
int i;
const char* names[] =
{
"xinput1_4.dll",
"xinput1_3.dll",
"xinput9_1_0.dll",
"xinput1_2.dll",
"xinput1_1.dll",
NULL
};
for (i = 0; names[i]; i++)
{
_glfw.win32.xinput.instance = LoadLibraryA(names[i]);
if (_glfw.win32.xinput.instance)
{
_glfw.win32.xinput.GetCapabilities = (PFN_XInputGetCapabilities)
GetProcAddress(_glfw.win32.xinput.instance, "XInputGetCapabilities");
_glfw.win32.xinput.GetState = (PFN_XInputGetState)
GetProcAddress(_glfw.win32.xinput.instance, "XInputGetState");
break;
}
}
}
_glfw.win32.dwmapi.instance = LoadLibraryA("dwmapi.dll");
if (_glfw.win32.dwmapi.instance)
{
_glfw.win32.dwmapi.DwmIsCompositionEnabled = (PFN_DwmIsCompositionEnabled)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmIsCompositionEnabled");
_glfw.win32.dwmapi.DwmFlush = (PFN_DwmFlush)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmFlush");
}
_glfw.win32.shcore.instance = LoadLibraryA("shcore.dll");
if (_glfw.win32.shcore.instance)
{
_glfw.win32.shcore.SetProcessDpiAwareness = (PFN_SetProcessDpiAwareness)
GetProcAddress(_glfw.win32.shcore.instance, "SetProcessDpiAwareness");
}
return GLFW_TRUE;
}
// Return a list of available and usable framebuffer configs
//
static int choosePixelFormat(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
_GLFWfbconfig* usableConfigs;
const _GLFWfbconfig* closest;
int i, pixelFormat, nativeCount, usableCount = 0, attribCount = 0;
int attribs[40];
int values[sizeof(attribs) / sizeof(attribs[0])];
if (_glfw.wgl.ARB_pixel_format)
{
const int attrib = WGL_NUMBER_PIXEL_FORMATS_ARB;
if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
1, 0, 1, &attrib, &nativeCount))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve pixel format attribute");
return 0;
}
addAttrib(WGL_SUPPORT_OPENGL_ARB);
addAttrib(WGL_DRAW_TO_WINDOW_ARB);
addAttrib(WGL_PIXEL_TYPE_ARB);
addAttrib(WGL_ACCELERATION_ARB);
addAttrib(WGL_RED_BITS_ARB);
addAttrib(WGL_RED_SHIFT_ARB);
addAttrib(WGL_GREEN_BITS_ARB);
addAttrib(WGL_GREEN_SHIFT_ARB);
addAttrib(WGL_BLUE_BITS_ARB);
addAttrib(WGL_BLUE_SHIFT_ARB);
addAttrib(WGL_ALPHA_BITS_ARB);
addAttrib(WGL_ALPHA_SHIFT_ARB);
addAttrib(WGL_DEPTH_BITS_ARB);
addAttrib(WGL_STENCIL_BITS_ARB);
addAttrib(WGL_ACCUM_BITS_ARB);
addAttrib(WGL_ACCUM_RED_BITS_ARB);
addAttrib(WGL_ACCUM_GREEN_BITS_ARB);
addAttrib(WGL_ACCUM_BLUE_BITS_ARB);
addAttrib(WGL_ACCUM_ALPHA_BITS_ARB);
addAttrib(WGL_AUX_BUFFERS_ARB);
addAttrib(WGL_STEREO_ARB);
addAttrib(WGL_DOUBLE_BUFFER_ARB);
if (_glfw.wgl.ARB_multisample)
addAttrib(WGL_SAMPLES_ARB);
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (_glfw.wgl.ARB_framebuffer_sRGB || _glfw.wgl.EXT_framebuffer_sRGB)
addAttrib(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB);
}
else
{
if (_glfw.wgl.EXT_colorspace)
addAttrib(WGL_COLORSPACE_EXT);
}
}
else
{
nativeCount = DescribePixelFormat(window->context.wgl.dc,
1,
sizeof(PIXELFORMATDESCRIPTOR),
NULL);
}
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
for (i = 0; i < nativeCount; i++)
{
_GLFWfbconfig* u = usableConfigs + usableCount;
pixelFormat = i + 1;
if (_glfw.wgl.ARB_pixel_format)
{
// Get pixel format attributes through "modern" extension
if (!_glfw.wgl.GetPixelFormatAttribivARB(window->context.wgl.dc,
pixelFormat, 0,
attribCount,
attribs, values))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve pixel format attributes");
free(usableConfigs);
return 0;
}
if (!findAttribValue(WGL_SUPPORT_OPENGL_ARB) ||
!findAttribValue(WGL_DRAW_TO_WINDOW_ARB))
{
continue;
}
if (findAttribValue(WGL_PIXEL_TYPE_ARB) != WGL_TYPE_RGBA_ARB)
continue;
if (findAttribValue(WGL_ACCELERATION_ARB) == WGL_NO_ACCELERATION_ARB)
continue;
u->redBits = findAttribValue(WGL_RED_BITS_ARB);
u->greenBits = findAttribValue(WGL_GREEN_BITS_ARB);
u->blueBits = findAttribValue(WGL_BLUE_BITS_ARB);
u->alphaBits = findAttribValue(WGL_ALPHA_BITS_ARB);
u->depthBits = findAttribValue(WGL_DEPTH_BITS_ARB);
u->stencilBits = findAttribValue(WGL_STENCIL_BITS_ARB);
u->accumRedBits = findAttribValue(WGL_ACCUM_RED_BITS_ARB);
u->accumGreenBits = findAttribValue(WGL_ACCUM_GREEN_BITS_ARB);
u->accumBlueBits = findAttribValue(WGL_ACCUM_BLUE_BITS_ARB);
u->accumAlphaBits = findAttribValue(WGL_ACCUM_ALPHA_BITS_ARB);
u->auxBuffers = findAttribValue(WGL_AUX_BUFFERS_ARB);
if (findAttribValue(WGL_STEREO_ARB))
u->stereo = GLFW_TRUE;
if (findAttribValue(WGL_DOUBLE_BUFFER_ARB))
u->doublebuffer = GLFW_TRUE;
if (_glfw.wgl.ARB_multisample)
u->samples = findAttribValue(WGL_SAMPLES_ARB);
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (_glfw.wgl.ARB_framebuffer_sRGB ||
_glfw.wgl.EXT_framebuffer_sRGB)
{
if (findAttribValue(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB))
u->sRGB = GLFW_TRUE;
}
}
else
{
if (_glfw.wgl.EXT_colorspace)
{
if (findAttribValue(WGL_COLORSPACE_EXT) == WGL_COLORSPACE_SRGB_EXT)
u->sRGB = GLFW_TRUE;
}
}
}
else
{
// Get pixel format attributes through legacy PFDs
PIXELFORMATDESCRIPTOR pfd;
if (!DescribePixelFormat(window->context.wgl.dc,
pixelFormat,
sizeof(PIXELFORMATDESCRIPTOR),
&pfd))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to describe pixel format");
free(usableConfigs);
return 0;
}
if (!(pfd.dwFlags & PFD_DRAW_TO_WINDOW) ||
!(pfd.dwFlags & PFD_SUPPORT_OPENGL))
{
continue;
}
if (!(pfd.dwFlags & PFD_GENERIC_ACCELERATED) &&
(pfd.dwFlags & PFD_GENERIC_FORMAT))
{
continue;
}
if (pfd.iPixelType != PFD_TYPE_RGBA)
continue;
u->redBits = pfd.cRedBits;
u->greenBits = pfd.cGreenBits;
u->blueBits = pfd.cBlueBits;
u->alphaBits = pfd.cAlphaBits;
u->depthBits = pfd.cDepthBits;
u->stencilBits = pfd.cStencilBits;
u->accumRedBits = pfd.cAccumRedBits;
u->accumGreenBits = pfd.cAccumGreenBits;
u->accumBlueBits = pfd.cAccumBlueBits;
u->accumAlphaBits = pfd.cAccumAlphaBits;
u->auxBuffers = pfd.cAuxBuffers;
if (pfd.dwFlags & PFD_STEREO)
u->stereo = GLFW_TRUE;
if (pfd.dwFlags & PFD_DOUBLEBUFFER)
u->doublebuffer = GLFW_TRUE;
}
u->handle = pixelFormat;
usableCount++;
}
if (!usableCount)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"WGL: The driver does not appear to support OpenGL");
free(usableConfigs);
return 0;
}
closest = _glfwChooseFBConfig(fbconfig, usableConfigs, usableCount);
if (!closest)
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"WGL: Failed to find a suitable pixel format");
free(usableConfigs);
return 0;
}
pixelFormat = (int) closest->handle;
free(usableConfigs);
return pixelFormat;
}
// Create the OpenGL or OpenGL ES context
//
GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
int attribs[40];
int pixelFormat;
PIXELFORMATDESCRIPTOR pfd;
HGLRC share = NULL;
if (ctxconfig->share)
share = ctxconfig->share->context.wgl.handle;
window->context.wgl.dc = GetDC(window->win32.handle);
if (!window->context.wgl.dc)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve DC for window");
return GLFW_FALSE;
}
pixelFormat = choosePixelFormat(window, ctxconfig, fbconfig);
if (!pixelFormat)
return GLFW_FALSE;
if (!DescribePixelFormat(window->context.wgl.dc,
pixelFormat, sizeof(pfd), &pfd))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve PFD for selected pixel format");
return GLFW_FALSE;
}
if (!SetPixelFormat(window->context.wgl.dc, pixelFormat, &pfd))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to set selected pixel format");
return GLFW_FALSE;
}
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (ctxconfig->forward)
{
if (!_glfw.wgl.ARB_create_context)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: A forward compatible OpenGL context requested but WGL_ARB_create_context is unavailable");
return GLFW_FALSE;
}
}
if (ctxconfig->profile)
{
if (!_glfw.wgl.ARB_create_context_profile)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: OpenGL profile requested but WGL_ARB_create_context_profile is unavailable");
return GLFW_FALSE;
}
}
}
else
{
if (!_glfw.wgl.ARB_create_context ||
!_glfw.wgl.ARB_create_context_profile ||
!_glfw.wgl.EXT_create_context_es2_profile)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"WGL: OpenGL ES requested but WGL_ARB_create_context_es2_profile is unavailable");
return GLFW_FALSE;
}
}
if (_glfw.wgl.ARB_create_context)
{
int index = 0, mask = 0, flags = 0;
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (ctxconfig->forward)
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
mask |= WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
mask |= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
}
else
mask |= WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
if (ctxconfig->debug)
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
if (ctxconfig->robustness)
{
if (_glfw.wgl.ARB_create_context_robustness)
{
if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION)
{
setAttrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
WGL_NO_RESET_NOTIFICATION_ARB);
}
else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET)
{
setAttrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
WGL_LOSE_CONTEXT_ON_RESET_ARB);
}
flags |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;
}
}
if (ctxconfig->release)
{
if (_glfw.wgl.ARB_context_flush_control)
{
if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE)
{
setAttrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB,
WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB);
}
else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH)
{
setAttrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB,
WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB);
}
}
}
if (ctxconfig->noerror)
{
if (_glfw.wgl.ARB_create_context_no_error)
setAttrib(WGL_CONTEXT_OPENGL_NO_ERROR_ARB, GLFW_TRUE);
}
// NOTE: Only request an explicitly versioned context when necessary, as
// explicitly requesting version 1.0 does not always return the
// highest version supported by the driver
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
{
setAttrib(WGL_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major);
setAttrib(WGL_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor);
}
if (flags)
setAttrib(WGL_CONTEXT_FLAGS_ARB, flags);
if (mask)
setAttrib(WGL_CONTEXT_PROFILE_MASK_ARB, mask);
setAttrib(0, 0);
window->context.wgl.handle =
_glfw.wgl.CreateContextAttribsARB(window->context.wgl.dc,
share, attribs);
if (!window->context.wgl.handle)
{
const DWORD error = GetLastError();
if (error == (0xc0070000 | ERROR_INVALID_VERSION_ARB))
{
if (ctxconfig->client == GLFW_OPENGL_API)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Driver does not support OpenGL version %i.%i",
ctxconfig->major,
ctxconfig->minor);
}
else
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Driver does not support OpenGL ES version %i.%i",
ctxconfig->major,
ctxconfig->minor);
}
}
else if (error == (0xc0070000 | ERROR_INVALID_PROFILE_ARB))
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Driver does not support the requested OpenGL profile");
}
else if (error == (0xc0070000 | ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB))
{
_glfwInputError(GLFW_INVALID_VALUE,
"WGL: The share context is not compatible with the requested context");
}
else
{
if (ctxconfig->client == GLFW_OPENGL_API)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Failed to create OpenGL context");
}
else
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Failed to create OpenGL ES context");
}
}
return GLFW_FALSE;
}
}
else
{
window->context.wgl.handle = wglCreateContext(window->context.wgl.dc);
if (!window->context.wgl.handle)
{
_glfwInputErrorWin32(GLFW_VERSION_UNAVAILABLE,
"WGL: Failed to create OpenGL context");
return GLFW_FALSE;
}
if (share)
{
if (!wglShareLists(share, window->context.wgl.handle))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to enable sharing with specified OpenGL context");
return GLFW_FALSE;
}
}
}
window->context.makeCurrent = makeContextCurrentWGL;
window->context.swapBuffers = swapBuffersWGL;
window->context.swapInterval = swapIntervalWGL;
window->context.extensionSupported = extensionSupportedWGL;
window->context.getProcAddress = getProcAddressWGL;
window->context.destroy = destroyContextWGL;
return GLFW_TRUE;
}
// Initialize WGL
//
GLFWbool _glfwInitWGL(void)
{
PIXELFORMATDESCRIPTOR pfd;
HGLRC prc, rc;
HDC pdc, dc;
if (_glfw.wgl.instance)
return GLFW_TRUE;
_glfw.wgl.instance = LoadLibraryA("opengl32.dll");
if (!_glfw.wgl.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to load opengl32.dll");
return GLFW_FALSE;
}
_glfw.wgl.CreateContext = (PFN_wglCreateContext)
GetProcAddress(_glfw.wgl.instance, "wglCreateContext");
_glfw.wgl.DeleteContext = (PFN_wglDeleteContext)
GetProcAddress(_glfw.wgl.instance, "wglDeleteContext");
_glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress)
GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress");
_glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC)
GetProcAddress(_glfw.wgl.instance, "wglGetCurrentDC");
_glfw.wgl.GetCurrentContext = (PFN_wglGetCurrentContext)
GetProcAddress(_glfw.wgl.instance, "wglGetCurrentContext");
_glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent)
GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent");
_glfw.wgl.ShareLists = (PFN_wglShareLists)
GetProcAddress(_glfw.wgl.instance, "wglShareLists");
// NOTE: A dummy context has to be created for opengl32.dll to load the
// OpenGL ICD, from which we can then query WGL extensions
// NOTE: This code will accept the Microsoft GDI ICD; accelerated context
// creation failure occurs during manual pixel format enumeration
dc = GetDC(_glfw.win32.helperWindowHandle);
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
if (!SetPixelFormat(dc, ChoosePixelFormat(dc, &pfd), &pfd))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to set pixel format for dummy context");
return GLFW_FALSE;
}
rc = wglCreateContext(dc);
if (!rc)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to create dummy context");
return GLFW_FALSE;
}
pdc = wglGetCurrentDC();
prc = wglGetCurrentContext();
if (!wglMakeCurrent(dc, rc))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to make dummy context current");
wglMakeCurrent(pdc, prc);
wglDeleteContext(rc);
return GLFW_FALSE;
}
// NOTE: Functions must be loaded first as they're needed to retrieve the
// extension string that tells us whether the functions are supported
_glfw.wgl.GetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)
wglGetProcAddress("wglGetExtensionsStringEXT");
_glfw.wgl.GetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)
wglGetProcAddress("wglGetExtensionsStringARB");
_glfw.wgl.CreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
wglGetProcAddress("wglCreateContextAttribsARB");
_glfw.wgl.SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)
wglGetProcAddress("wglSwapIntervalEXT");
_glfw.wgl.GetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)
wglGetProcAddress("wglGetPixelFormatAttribivARB");
// NOTE: WGL_ARB_extensions_string and WGL_EXT_extensions_string are not
// checked below as we are already using them
_glfw.wgl.ARB_multisample =
extensionSupportedWGL("WGL_ARB_multisample");
_glfw.wgl.ARB_framebuffer_sRGB =
extensionSupportedWGL("WGL_ARB_framebuffer_sRGB");
_glfw.wgl.EXT_framebuffer_sRGB =
extensionSupportedWGL("WGL_EXT_framebuffer_sRGB");
_glfw.wgl.ARB_create_context =
extensionSupportedWGL("WGL_ARB_create_context");
_glfw.wgl.ARB_create_context_profile =
extensionSupportedWGL("WGL_ARB_create_context_profile");
_glfw.wgl.EXT_create_context_es2_profile =
extensionSupportedWGL("WGL_EXT_create_context_es2_profile");
_glfw.wgl.ARB_create_context_robustness =
extensionSupportedWGL("WGL_ARB_create_context_robustness");
_glfw.wgl.ARB_create_context_no_error =
extensionSupportedWGL("WGL_ARB_create_context_no_error");
_glfw.wgl.EXT_swap_control =
extensionSupportedWGL("WGL_EXT_swap_control");
_glfw.wgl.EXT_colorspace =
extensionSupportedWGL("WGL_EXT_colorspace");
_glfw.wgl.ARB_pixel_format =
extensionSupportedWGL("WGL_ARB_pixel_format");
_glfw.wgl.ARB_context_flush_control =
extensionSupportedWGL("WGL_ARB_context_flush_control");
wglMakeCurrent(pdc, prc);
wglDeleteContext(rc);
return GLFW_TRUE;
}
// Load necessary libraries (DLLs)
//
static GLFWbool loadLibraries(void)
{
_glfw.win32.winmm.instance = LoadLibraryA("winmm.dll");
if (!_glfw.win32.winmm.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to load winmm.dll");
return GLFW_FALSE;
}
_glfw.win32.winmm.GetTime = (PFN_timeGetTime)
GetProcAddress(_glfw.win32.winmm.instance, "timeGetTime");
_glfw.win32.user32.instance = LoadLibraryA("user32.dll");
if (!_glfw.win32.user32.instance)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to load user32.dll");
return GLFW_FALSE;
}
_glfw.win32.user32.SetProcessDPIAware_ = (PFN_SetProcessDPIAware)
GetProcAddress(_glfw.win32.user32.instance, "SetProcessDPIAware");
_glfw.win32.user32.ChangeWindowMessageFilterEx_ = (PFN_ChangeWindowMessageFilterEx)
GetProcAddress(_glfw.win32.user32.instance, "ChangeWindowMessageFilterEx");
_glfw.win32.user32.EnableNonClientDpiScaling_ = (PFN_EnableNonClientDpiScaling)
GetProcAddress(_glfw.win32.user32.instance, "EnableNonClientDpiScaling");
_glfw.win32.user32.SetProcessDpiAwarenessContext_ = (PFN_SetProcessDpiAwarenessContext)
GetProcAddress(_glfw.win32.user32.instance, "SetProcessDpiAwarenessContext");
_glfw.win32.user32.GetDpiForWindow_ = (PFN_GetDpiForWindow)
GetProcAddress(_glfw.win32.user32.instance, "GetDpiForWindow");
_glfw.win32.user32.AdjustWindowRectExForDpi_ = (PFN_AdjustWindowRectExForDpi)
GetProcAddress(_glfw.win32.user32.instance, "AdjustWindowRectExForDpi");
_glfw.win32.dinput8.instance = LoadLibraryA("dinput8.dll");
if (_glfw.win32.dinput8.instance)
{
_glfw.win32.dinput8.Create = (PFN_DirectInput8Create)
GetProcAddress(_glfw.win32.dinput8.instance, "DirectInput8Create");
}
{
int i;
const char* names[] =
{
"xinput1_4.dll",
"xinput1_3.dll",
"xinput9_1_0.dll",
"xinput1_2.dll",
"xinput1_1.dll",
NULL
};
for (i = 0; names[i]; i++)
{
_glfw.win32.xinput.instance = LoadLibraryA(names[i]);
if (_glfw.win32.xinput.instance)
{
_glfw.win32.xinput.GetCapabilities = (PFN_XInputGetCapabilities)
GetProcAddress(_glfw.win32.xinput.instance, "XInputGetCapabilities");
_glfw.win32.xinput.GetState = (PFN_XInputGetState)
GetProcAddress(_glfw.win32.xinput.instance, "XInputGetState");
break;
}
}
}
_glfw.win32.dwmapi.instance = LoadLibraryA("dwmapi.dll");
if (_glfw.win32.dwmapi.instance)
{
_glfw.win32.dwmapi.IsCompositionEnabled = (PFN_DwmIsCompositionEnabled)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmIsCompositionEnabled");
_glfw.win32.dwmapi.Flush = (PFN_DwmFlush)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmFlush");
_glfw.win32.dwmapi.EnableBlurBehindWindow = (PFN_DwmEnableBlurBehindWindow)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmEnableBlurBehindWindow");
}
_glfw.win32.shcore.instance = LoadLibraryA("shcore.dll");
if (_glfw.win32.shcore.instance)
{
_glfw.win32.shcore.SetProcessDpiAwareness_ = (PFN_SetProcessDpiAwareness)
GetProcAddress(_glfw.win32.shcore.instance, "SetProcessDpiAwareness");
_glfw.win32.shcore.GetDpiForMonitor_ = (PFN_GetDpiForMonitor)
GetProcAddress(_glfw.win32.shcore.instance, "GetDpiForMonitor");
}
_glfw.win32.ntdll.instance = LoadLibraryA("ntdll.dll");
if (_glfw.win32.ntdll.instance)
{
_glfw.win32.ntdll.RtlVerifyVersionInfo_ = (PFN_RtlVerifyVersionInfo)
GetProcAddress(_glfw.win32.ntdll.instance, "RtlVerifyVersionInfo");
}
return GLFW_TRUE;
}
