| //======================================================================== |
| // GLFW 3.2 WGL - www.glfw.org |
| //------------------------------------------------------------------------ |
| // Copyright (c) 2002-2006 Marcus Geelnard |
| // Copyright (c) 2006-2016 Camilla Berglund <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. |
| // |
| //======================================================================== |
| |
| #include "internal.h" |
| |
| #include <stdlib.h> |
| #include <malloc.h> |
| #include <assert.h> |
| |
| |
| // 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)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to retrieve pixel format attribute %i", |
| attrib); |
| return 0; |
| } |
| |
| return value; |
| } |
| |
| // Return a list of available and usable framebuffer configs |
| // |
| static GLFWbool choosePixelFormat(_GLFWwindow* window, |
| const _GLFWfbconfig* desired, |
| int* result) |
| { |
| _GLFWfbconfig* usableConfigs; |
| const _GLFWfbconfig* closest; |
| int i, nativeCount, usableCount; |
| |
| if (_glfw.wgl.ARB_pixel_format) |
| { |
| nativeCount = getPixelFormatAttrib(window, |
| 1, |
| WGL_NUMBER_PIXEL_FORMATS_ARB); |
| } |
| else |
| { |
| nativeCount = DescribePixelFormat(window->context.wgl.dc, |
| 1, |
| sizeof(PIXELFORMATDESCRIPTOR), |
| NULL); |
| } |
| |
| usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig)); |
| usableCount = 0; |
| |
| for (i = 0; i < nativeCount; i++) |
| { |
| const int n = i + 1; |
| _GLFWfbconfig* u = usableConfigs + usableCount; |
| |
| if (_glfw.wgl.ARB_pixel_format) |
| { |
| // Get pixel format attributes through "modern" extension |
| |
| if (!getPixelFormatAttrib(window, n, WGL_SUPPORT_OPENGL_ARB) || |
| !getPixelFormatAttrib(window, n, WGL_DRAW_TO_WINDOW_ARB)) |
| { |
| continue; |
| } |
| |
| if (getPixelFormatAttrib(window, n, WGL_PIXEL_TYPE_ARB) != |
| WGL_TYPE_RGBA_ARB) |
| { |
| continue; |
| } |
| |
| if (getPixelFormatAttrib(window, n, WGL_ACCELERATION_ARB) == |
| WGL_NO_ACCELERATION_ARB) |
| { |
| continue; |
| } |
| |
| u->redBits = getPixelFormatAttrib(window, n, WGL_RED_BITS_ARB); |
| u->greenBits = getPixelFormatAttrib(window, n, WGL_GREEN_BITS_ARB); |
| u->blueBits = getPixelFormatAttrib(window, n, WGL_BLUE_BITS_ARB); |
| u->alphaBits = getPixelFormatAttrib(window, n, WGL_ALPHA_BITS_ARB); |
| |
| u->depthBits = getPixelFormatAttrib(window, n, WGL_DEPTH_BITS_ARB); |
| u->stencilBits = getPixelFormatAttrib(window, n, WGL_STENCIL_BITS_ARB); |
| |
| u->accumRedBits = getPixelFormatAttrib(window, n, WGL_ACCUM_RED_BITS_ARB); |
| u->accumGreenBits = getPixelFormatAttrib(window, n, WGL_ACCUM_GREEN_BITS_ARB); |
| u->accumBlueBits = getPixelFormatAttrib(window, n, WGL_ACCUM_BLUE_BITS_ARB); |
| u->accumAlphaBits = getPixelFormatAttrib(window, n, WGL_ACCUM_ALPHA_BITS_ARB); |
| |
| u->auxBuffers = getPixelFormatAttrib(window, n, WGL_AUX_BUFFERS_ARB); |
| |
| if (getPixelFormatAttrib(window, n, WGL_STEREO_ARB)) |
| u->stereo = GLFW_TRUE; |
| if (getPixelFormatAttrib(window, n, WGL_DOUBLE_BUFFER_ARB)) |
| u->doublebuffer = GLFW_TRUE; |
| |
| if (_glfw.wgl.ARB_multisample) |
| u->samples = getPixelFormatAttrib(window, n, WGL_SAMPLES_ARB); |
| |
| if (_glfw.wgl.ARB_framebuffer_sRGB || |
| _glfw.wgl.EXT_framebuffer_sRGB) |
| { |
| if (getPixelFormatAttrib(window, n, WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB)) |
| u->sRGB = GLFW_TRUE; |
| } |
| } |
| else |
| { |
| PIXELFORMATDESCRIPTOR pfd; |
| |
| // Get pixel format attributes through legacy PFDs |
| |
| if (!DescribePixelFormat(window->context.wgl.dc, |
| n, |
| sizeof(PIXELFORMATDESCRIPTOR), |
| &pfd)) |
| { |
| continue; |
| } |
| |
| 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 = n; |
| usableCount++; |
| } |
| |
| if (!usableCount) |
| { |
| _glfwInputError(GLFW_API_UNAVAILABLE, |
| "WGL: The driver does not appear to support OpenGL"); |
| |
| free(usableConfigs); |
| return GLFW_FALSE; |
| } |
| |
| closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount); |
| if (!closest) |
| { |
| _glfwInputError(GLFW_FORMAT_UNAVAILABLE, |
| "WGL: Failed to find a suitable pixel format"); |
| |
| free(usableConfigs); |
| return GLFW_FALSE; |
| } |
| |
| *result = (int) closest->handle; |
| free(usableConfigs); |
| |
| return GLFW_TRUE; |
| } |
| |
| // Returns whether desktop compositing is enabled |
| // |
| static GLFWbool isCompositionEnabled(void) |
| { |
| BOOL enabled; |
| |
| if (!_glfw_DwmIsCompositionEnabled) |
| return FALSE; |
| |
| if (_glfw_DwmIsCompositionEnabled(&enabled) != S_OK) |
| return FALSE; |
| |
| return enabled; |
| } |
| |
| static void makeContextCurrent(_GLFWwindow* window) |
| { |
| if (window) |
| { |
| if (wglMakeCurrent(window->context.wgl.dc, window->context.wgl.handle)) |
| _glfwPlatformSetCurrentContext(window); |
| else |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to make context current"); |
| _glfwPlatformSetCurrentContext(NULL); |
| } |
| } |
| else |
| { |
| if (!wglMakeCurrent(NULL, NULL)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to clear current context"); |
| } |
| |
| _glfwPlatformSetCurrentContext(NULL); |
| } |
| } |
| |
| static void swapBuffers(_GLFWwindow* window) |
| { |
| // HACK: Use DwmFlush when desktop composition is enabled |
| if (isCompositionEnabled() && !window->monitor) |
| { |
| int count = abs(window->context.wgl.interval); |
| while (count--) |
| _glfw_DwmFlush(); |
| } |
| |
| SwapBuffers(window->context.wgl.dc); |
| } |
| |
| static void swapInterval(int interval) |
| { |
| _GLFWwindow* window = _glfwPlatformGetCurrentContext(); |
| |
| window->context.wgl.interval = interval; |
| |
| // HACK: Disable WGL swap interval when desktop composition is enabled to |
| // avoid interfering with DWM vsync |
| if (isCompositionEnabled() && !window->monitor) |
| interval = 0; |
| |
| if (_glfw.wgl.EXT_swap_control) |
| _glfw.wgl.SwapIntervalEXT(interval); |
| } |
| |
| static int extensionSupported(const char* extension) |
| { |
| const char* extensions; |
| |
| _GLFWwindow* window = _glfwPlatformGetCurrentContext(); |
| |
| if (_glfw.wgl.GetExtensionsStringEXT) |
| { |
| extensions = _glfw.wgl.GetExtensionsStringEXT(); |
| if (extensions) |
| { |
| if (_glfwStringInExtensionString(extension, extensions)) |
| return GLFW_TRUE; |
| } |
| } |
| |
| if (_glfw.wgl.GetExtensionsStringARB) |
| { |
| extensions = _glfw.wgl.GetExtensionsStringARB(window->context.wgl.dc); |
| if (extensions) |
| { |
| if (_glfwStringInExtensionString(extension, extensions)) |
| return GLFW_TRUE; |
| } |
| } |
| |
| return GLFW_FALSE; |
| } |
| |
| static GLFWglproc getProcAddress(const char* procname) |
| { |
| const GLFWglproc proc = (GLFWglproc) wglGetProcAddress(procname); |
| if (proc) |
| return proc; |
| |
| return (GLFWglproc) GetProcAddress(_glfw.wgl.instance, procname); |
| } |
| |
| // Destroy the OpenGL context |
| // |
| static void destroyContext(_GLFWwindow* window) |
| { |
| if (window->context.wgl.handle) |
| { |
| wglDeleteContext(window->context.wgl.handle); |
| window->context.wgl.handle = NULL; |
| } |
| } |
| |
| // Initialize WGL-specific extensions |
| // |
| static void loadExtensions(void) |
| { |
| // Functions for WGL_EXT_extension_string |
| // NOTE: These are needed by extensionSupported |
| _glfw.wgl.GetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC) |
| wglGetProcAddress("wglGetExtensionsStringEXT"); |
| _glfw.wgl.GetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC) |
| wglGetProcAddress("wglGetExtensionsStringARB"); |
| |
| // Functions for WGL_ARB_create_context |
| _glfw.wgl.CreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC) |
| wglGetProcAddress("wglCreateContextAttribsARB"); |
| |
| // Functions for WGL_EXT_swap_control |
| _glfw.wgl.SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC) |
| wglGetProcAddress("wglSwapIntervalEXT"); |
| |
| // Functions for WGL_ARB_pixel_format |
| _glfw.wgl.GetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC) |
| wglGetProcAddress("wglGetPixelFormatAttribivARB"); |
| |
| // This needs to include every extension used below except for |
| // WGL_ARB_extensions_string and WGL_EXT_extensions_string |
| _glfw.wgl.ARB_multisample = |
| extensionSupported("WGL_ARB_multisample"); |
| _glfw.wgl.ARB_framebuffer_sRGB = |
| extensionSupported("WGL_ARB_framebuffer_sRGB"); |
| _glfw.wgl.EXT_framebuffer_sRGB = |
| extensionSupported("WGL_EXT_framebuffer_sRGB"); |
| _glfw.wgl.ARB_create_context = |
| extensionSupported("WGL_ARB_create_context"); |
| _glfw.wgl.ARB_create_context_profile = |
| extensionSupported("WGL_ARB_create_context_profile"); |
| _glfw.wgl.EXT_create_context_es2_profile = |
| extensionSupported("WGL_EXT_create_context_es2_profile"); |
| _glfw.wgl.ARB_create_context_robustness = |
| extensionSupported("WGL_ARB_create_context_robustness"); |
| _glfw.wgl.EXT_swap_control = |
| extensionSupported("WGL_EXT_swap_control"); |
| _glfw.wgl.ARB_pixel_format = |
| extensionSupported("WGL_ARB_pixel_format"); |
| _glfw.wgl.ARB_context_flush_control = |
| extensionSupported("WGL_ARB_context_flush_control"); |
| |
| _glfw.wgl.extensionsLoaded = GLFW_TRUE; |
| } |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW internal API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| // Initialize WGL |
| // |
| GLFWbool _glfwInitWGL(void) |
| { |
| _glfw.wgl.instance = LoadLibraryA("opengl32.dll"); |
| if (!_glfw.wgl.instance) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, "WGL: Failed to load opengl32.dll"); |
| return GLFW_FALSE; |
| } |
| |
| _glfw.wgl.CreateContext = (WGLCREATECONTEXT_T) |
| GetProcAddress(_glfw.wgl.instance, "wglCreateContext"); |
| _glfw.wgl.DeleteContext = (WGLDELETECONTEXT_T) |
| GetProcAddress(_glfw.wgl.instance, "wglDeleteContext"); |
| _glfw.wgl.GetProcAddress = (WGLGETPROCADDRESS_T) |
| GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress"); |
| _glfw.wgl.MakeCurrent = (WGLMAKECURRENT_T) |
| GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent"); |
| _glfw.wgl.ShareLists = (WGLSHARELISTS_T) |
| GetProcAddress(_glfw.wgl.instance, "wglShareLists"); |
| |
| return GLFW_TRUE; |
| } |
| |
| // Terminate WGL |
| // |
| void _glfwTerminateWGL(void) |
| { |
| if (_glfw.wgl.instance) |
| FreeLibrary(_glfw.wgl.instance); |
| } |
| |
| #define setWGLattrib(attribName, attribValue) \ |
| { \ |
| attribs[index++] = attribName; \ |
| attribs[index++] = attribValue; \ |
| assert((size_t) index < sizeof(attribs) / sizeof(attribs[0])); \ |
| } |
| |
| // Create the OpenGL or OpenGL ES context |
| // |
| GLFWbool _glfwCreateContextWGL(_GLFWwindow* window, |
| const _GLFWctxconfig* ctxconfig, |
| const _GLFWfbconfig* fbconfig) |
| { |
| int attribs[40]; |
| int pixelFormat = 0; |
| PIXELFORMATDESCRIPTOR pfd; |
| HGLRC share = NULL; |
| |
| if (ctxconfig->client == GLFW_NO_API) |
| return GLFW_TRUE; |
| |
| 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; |
| } |
| |
| if (!choosePixelFormat(window, fbconfig, &pixelFormat)) |
| return GLFW_FALSE; |
| |
| if (!DescribePixelFormat(window->context.wgl.dc, |
| pixelFormat, sizeof(pfd), &pfd)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to retrieve PFD for selected pixel format"); |
| return GLFW_FALSE; |
| } |
| |
| if (!SetPixelFormat(window->context.wgl.dc, pixelFormat, &pfd)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to set selected pixel format"); |
| 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->noerror) |
| flags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR; |
| |
| if (ctxconfig->robustness) |
| { |
| if (_glfw.wgl.ARB_create_context_robustness) |
| { |
| if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION) |
| { |
| setWGLattrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, |
| WGL_NO_RESET_NOTIFICATION_ARB); |
| } |
| else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET) |
| { |
| setWGLattrib(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) |
| { |
| setWGLattrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
| WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB); |
| } |
| else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH) |
| { |
| setWGLattrib(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
| WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB); |
| } |
| } |
| } |
| |
| // 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) |
| { |
| setWGLattrib(WGL_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major); |
| setWGLattrib(WGL_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor); |
| } |
| |
| if (flags) |
| setWGLattrib(WGL_CONTEXT_FLAGS_ARB, flags); |
| |
| if (mask) |
| setWGLattrib(WGL_CONTEXT_PROFILE_MASK_ARB, mask); |
| |
| setWGLattrib(0, 0); |
| |
| window->context.wgl.handle = |
| _glfw.wgl.CreateContextAttribsARB(window->context.wgl.dc, |
| share, attribs); |
| if (!window->context.wgl.handle) |
| { |
| _glfwInputError(GLFW_VERSION_UNAVAILABLE, |
| "WGL: Failed to create OpenGL context"); |
| return GLFW_FALSE; |
| } |
| } |
| else |
| { |
| window->context.wgl.handle = wglCreateContext(window->context.wgl.dc); |
| if (!window->context.wgl.handle) |
| { |
| _glfwInputError(GLFW_VERSION_UNAVAILABLE, |
| "WGL: Failed to create OpenGL context"); |
| return GLFW_FALSE; |
| } |
| |
| if (share) |
| { |
| if (!wglShareLists(share, window->context.wgl.handle)) |
| { |
| _glfwInputError(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to enable sharing with specified OpenGL context"); |
| return GLFW_FALSE; |
| } |
| } |
| } |
| |
| window->context.makeCurrent = makeContextCurrent; |
| window->context.swapBuffers = swapBuffers; |
| window->context.swapInterval = swapInterval; |
| window->context.extensionSupported = extensionSupported; |
| window->context.getProcAddress = getProcAddress; |
| window->context.destroy = destroyContext; |
| |
| return GLFW_TRUE; |
| } |
| |
| #undef setWGLattrib |
| |
| // Analyzes the specified context for possible recreation |
| // |
| int _glfwAnalyzeContextWGL(_GLFWwindow* window, |
| const _GLFWctxconfig* ctxconfig, |
| const _GLFWfbconfig* fbconfig) |
| { |
| GLFWbool required = GLFW_FALSE; |
| |
| if (_glfw.wgl.extensionsLoaded) |
| return _GLFW_RECREATION_NOT_NEEDED; |
| |
| makeContextCurrent(window); |
| loadExtensions(); |
| |
| 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_RECREATION_IMPOSSIBLE; |
| } |
| |
| required = GLFW_TRUE; |
| } |
| |
| 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_RECREATION_IMPOSSIBLE; |
| } |
| |
| required = GLFW_TRUE; |
| } |
| |
| if (ctxconfig->release) |
| { |
| if (_glfw.wgl.ARB_context_flush_control) |
| required = GLFW_TRUE; |
| } |
| } |
| 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_RECREATION_IMPOSSIBLE; |
| } |
| |
| required = GLFW_TRUE; |
| } |
| |
| if (ctxconfig->major != 1 || ctxconfig->minor != 0) |
| { |
| if (_glfw.wgl.ARB_create_context) |
| required = GLFW_TRUE; |
| } |
| |
| if (ctxconfig->debug) |
| { |
| if (_glfw.wgl.ARB_create_context) |
| required = GLFW_TRUE; |
| } |
| |
| if (fbconfig->samples > 0) |
| { |
| // MSAA is not a hard constraint, so do nothing if it's not supported |
| if (_glfw.wgl.ARB_multisample && _glfw.wgl.ARB_pixel_format) |
| required = GLFW_TRUE; |
| } |
| |
| if (fbconfig->sRGB) |
| { |
| // sRGB is not a hard constraint, so do nothing if it's not supported |
| if ((_glfw.wgl.ARB_framebuffer_sRGB || |
| _glfw.wgl.EXT_framebuffer_sRGB) && |
| _glfw.wgl.ARB_pixel_format) |
| { |
| required = GLFW_TRUE; |
| } |
| } |
| |
| if (required) |
| return _GLFW_RECREATION_REQUIRED; |
| |
| return _GLFW_RECREATION_NOT_NEEDED; |
| } |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// 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; |
| } |
| |
