--- /dev/null
+//========================================================================
+// GLFW 3.4 WGL - www.glfw.org
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+// claim that you wrote the original software. If you use this software
+// in a product, an acknowledgment in the product documentation would
+// be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+// be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+// distribution.
+//
+//========================================================================
+// Please use C89 style variable declarations in this file because VS 2010
+//========================================================================
+
+#include "internal.h"
+
+#include <stdlib.h>
+#include <malloc.h>
+#include <assert.h>
+
+// 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;
+}
+
+#define addAttrib(a) \
+{ \
+ assert((size_t) attribCount < sizeof(attribs) / sizeof(attribs[0])); \
+ attribs[attribCount++] = a; \
+}
+#define findAttribValue(a) \
+ findPixelFormatAttribValue(attribs, attribCount, values, a)
+
+// 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 (!wglGetPixelFormatAttribivARB(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 (!wglGetPixelFormatAttribivARB(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;
+}
+
+#undef addAttrib
+#undef findAttribValue
+
+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);
+ }
+}
+
+static void swapBuffersWGL(_GLFWwindow* window)
+{
+ if (!window->monitor)
+ {
+ if (IsWindowsVistaOrGreater())
+ {
+ // DWM Composition is always enabled on Win8+
+ BOOL enabled = IsWindows8OrGreater();
+
+ // HACK: Use DwmFlush when desktop composition is enabled
+ if (enabled ||
+ (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
+ {
+ int count = abs(window->context.wgl.interval);
+ while (count--)
+ DwmFlush();
+ }
+ }
+ }
+
+ SwapBuffers(window->context.wgl.dc);
+}
+
+static void swapIntervalWGL(int interval)
+{
+ _GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
+
+ window->context.wgl.interval = interval;
+
+ if (!window->monitor)
+ {
+ if (IsWindowsVistaOrGreater())
+ {
+ // DWM Composition is always enabled on Win8+
+ BOOL enabled = IsWindows8OrGreater();
+
+ // HACK: Disable WGL swap interval when desktop composition is enabled to
+ // avoid interfering with DWM vsync
+ if (enabled ||
+ (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
+ interval = 0;
+ }
+ }
+
+ if (_glfw.wgl.EXT_swap_control)
+ wglSwapIntervalEXT(interval);
+}
+
+static int extensionSupportedWGL(const char* extension)
+{
+ const char* extensions = NULL;
+
+ if (_glfw.wgl.GetExtensionsStringARB)
+ extensions = wglGetExtensionsStringARB(wglGetCurrentDC());
+ else if (_glfw.wgl.GetExtensionsStringEXT)
+ extensions = wglGetExtensionsStringEXT();
+
+ if (!extensions)
+ return GLFW_FALSE;
+
+ return _glfwStringInExtensionString(extension, extensions);
+}
+
+static GLFWglproc getProcAddressWGL(const char* procname)
+{
+ const GLFWglproc proc = (GLFWglproc) wglGetProcAddress(procname);
+ if (proc)
+ return proc;
+
+ return (GLFWglproc) GetProcAddress(_glfw.wgl.instance, procname);
+}
+
+static void destroyContextWGL(_GLFWwindow* window)
+{
+ if (window->context.wgl.handle)
+ {
+ wglDeleteContext(window->context.wgl.handle);
+ window->context.wgl.handle = NULL;
+ }
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+////// GLFW internal API //////
+//////////////////////////////////////////////////////////////////////////
+
+// 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;
+}
+
+// Terminate WGL
+//
+void _glfwTerminateWGL(void)
+{
+ if (_glfw.wgl.instance)
+ FreeLibrary(_glfw.wgl.instance);
+}
+
+#define setAttrib(a, v) \
+{ \
+ assert(((size_t) index + 1) < sizeof(attribs) / sizeof(attribs[0])); \
+ attribs[index++] = a; \
+ attribs[index++] = v; \
+}
+
+// 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 =
+ wglCreateContextAttribsARB(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;
+}
+
+#undef setAttrib
+
+
+//////////////////////////////////////////////////////////////////////////
+////// GLFW native API //////
+//////////////////////////////////////////////////////////////////////////
+
+GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* handle)
+{
+ _GLFWwindow* window = (_GLFWwindow*) handle;
+ _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
+
+ if (window->context.client == GLFW_NO_API)
+ {
+ _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
+ return NULL;
+ }
+
+ return window->context.wgl.handle;
+}
+
projects / pistorm / blobdiff