| //======================================================================== |
| // GLFW 3.5 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. |
| // |
| //======================================================================== |
| |
| #include "internal.h" |
| |
| #if defined(_GLFW_WIN32) |
| |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| // Return the value corresponding to the specified attribute |
| // |
| static int findPixelFormatAttribValueWGL(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 ADD_ATTRIB(a) \ |
| { \ |
| assert((size_t) attribCount < sizeof(attribs) / sizeof(attribs[0])); \ |
| attribs[attribCount++] = a; \ |
| } |
| #define FIND_ATTRIB_VALUE(a) \ |
| findPixelFormatAttribValueWGL(attribs, attribCount, values, a) |
| |
| // Return a list of available and usable framebuffer configs |
| // |
| static int choosePixelFormatWGL(_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])]; |
| |
| nativeCount = DescribePixelFormat(window->context.wgl.dc, |
| 1, |
| sizeof(PIXELFORMATDESCRIPTOR), |
| NULL); |
| |
| if (_glfw.wgl.ARB_pixel_format) |
| { |
| ADD_ATTRIB(WGL_SUPPORT_OPENGL_ARB); |
| ADD_ATTRIB(WGL_DRAW_TO_WINDOW_ARB); |
| ADD_ATTRIB(WGL_PIXEL_TYPE_ARB); |
| ADD_ATTRIB(WGL_ACCELERATION_ARB); |
| ADD_ATTRIB(WGL_RED_BITS_ARB); |
| ADD_ATTRIB(WGL_RED_SHIFT_ARB); |
| ADD_ATTRIB(WGL_GREEN_BITS_ARB); |
| ADD_ATTRIB(WGL_GREEN_SHIFT_ARB); |
| ADD_ATTRIB(WGL_BLUE_BITS_ARB); |
| ADD_ATTRIB(WGL_BLUE_SHIFT_ARB); |
| ADD_ATTRIB(WGL_ALPHA_BITS_ARB); |
| ADD_ATTRIB(WGL_ALPHA_SHIFT_ARB); |
| ADD_ATTRIB(WGL_DEPTH_BITS_ARB); |
| ADD_ATTRIB(WGL_STENCIL_BITS_ARB); |
| ADD_ATTRIB(WGL_ACCUM_BITS_ARB); |
| ADD_ATTRIB(WGL_ACCUM_RED_BITS_ARB); |
| ADD_ATTRIB(WGL_ACCUM_GREEN_BITS_ARB); |
| ADD_ATTRIB(WGL_ACCUM_BLUE_BITS_ARB); |
| ADD_ATTRIB(WGL_ACCUM_ALPHA_BITS_ARB); |
| ADD_ATTRIB(WGL_AUX_BUFFERS_ARB); |
| ADD_ATTRIB(WGL_STEREO_ARB); |
| ADD_ATTRIB(WGL_DOUBLE_BUFFER_ARB); |
| |
| if (_glfw.wgl.ARB_multisample) |
| ADD_ATTRIB(WGL_SAMPLES_ARB); |
| |
| if (ctxconfig->client == GLFW_OPENGL_API) |
| { |
| if (_glfw.wgl.ARB_framebuffer_sRGB || _glfw.wgl.EXT_framebuffer_sRGB) |
| ADD_ATTRIB(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB); |
| } |
| else |
| { |
| if (_glfw.wgl.EXT_colorspace) |
| ADD_ATTRIB(WGL_COLORSPACE_EXT); |
| } |
| |
| // NOTE: In a Parallels VM WGL_ARB_pixel_format returns fewer pixel formats than |
| // DescribePixelFormat, violating the guarantees of the extension spec |
| // HACK: Iterate through the minimum of both counts |
| |
| const int attrib = WGL_NUMBER_PIXEL_FORMATS_ARB; |
| int extensionCount; |
| |
| if (!wglGetPixelFormatAttribivARB(window->context.wgl.dc, |
| 1, 0, 1, &attrib, &extensionCount)) |
| { |
| _glfwInputErrorWin32(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to retrieve pixel format attribute"); |
| return 0; |
| } |
| |
| nativeCount = _glfw_min(nativeCount, extensionCount); |
| } |
| |
| usableConfigs = _glfw_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"); |
| |
| _glfw_free(usableConfigs); |
| return 0; |
| } |
| |
| if (!FIND_ATTRIB_VALUE(WGL_SUPPORT_OPENGL_ARB) || |
| !FIND_ATTRIB_VALUE(WGL_DRAW_TO_WINDOW_ARB)) |
| { |
| continue; |
| } |
| |
| if (FIND_ATTRIB_VALUE(WGL_PIXEL_TYPE_ARB) != WGL_TYPE_RGBA_ARB) |
| continue; |
| |
| if (FIND_ATTRIB_VALUE(WGL_ACCELERATION_ARB) == WGL_NO_ACCELERATION_ARB) |
| continue; |
| |
| if (FIND_ATTRIB_VALUE(WGL_DOUBLE_BUFFER_ARB) != fbconfig->doublebuffer) |
| continue; |
| |
| u->redBits = FIND_ATTRIB_VALUE(WGL_RED_BITS_ARB); |
| u->greenBits = FIND_ATTRIB_VALUE(WGL_GREEN_BITS_ARB); |
| u->blueBits = FIND_ATTRIB_VALUE(WGL_BLUE_BITS_ARB); |
| u->alphaBits = FIND_ATTRIB_VALUE(WGL_ALPHA_BITS_ARB); |
| |
| u->depthBits = FIND_ATTRIB_VALUE(WGL_DEPTH_BITS_ARB); |
| u->stencilBits = FIND_ATTRIB_VALUE(WGL_STENCIL_BITS_ARB); |
| |
| u->accumRedBits = FIND_ATTRIB_VALUE(WGL_ACCUM_RED_BITS_ARB); |
| u->accumGreenBits = FIND_ATTRIB_VALUE(WGL_ACCUM_GREEN_BITS_ARB); |
| u->accumBlueBits = FIND_ATTRIB_VALUE(WGL_ACCUM_BLUE_BITS_ARB); |
| u->accumAlphaBits = FIND_ATTRIB_VALUE(WGL_ACCUM_ALPHA_BITS_ARB); |
| |
| u->auxBuffers = FIND_ATTRIB_VALUE(WGL_AUX_BUFFERS_ARB); |
| |
| if (FIND_ATTRIB_VALUE(WGL_STEREO_ARB)) |
| u->stereo = GLFW_TRUE; |
| |
| if (_glfw.wgl.ARB_multisample) |
| u->samples = FIND_ATTRIB_VALUE(WGL_SAMPLES_ARB); |
| |
| if (ctxconfig->client == GLFW_OPENGL_API) |
| { |
| if (_glfw.wgl.ARB_framebuffer_sRGB || |
| _glfw.wgl.EXT_framebuffer_sRGB) |
| { |
| if (FIND_ATTRIB_VALUE(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB)) |
| u->sRGB = GLFW_TRUE; |
| } |
| } |
| else |
| { |
| if (_glfw.wgl.EXT_colorspace) |
| { |
| if (FIND_ATTRIB_VALUE(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"); |
| |
| _glfw_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; |
| |
| if (!!(pfd.dwFlags & PFD_DOUBLEBUFFER) != fbconfig->doublebuffer) |
| 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; |
| } |
| |
| u->handle = pixelFormat; |
| usableCount++; |
| } |
| |
| if (!usableCount) |
| { |
| _glfwInputError(GLFW_API_UNAVAILABLE, |
| "WGL: The driver does not appear to support OpenGL"); |
| |
| _glfw_free(usableConfigs); |
| return 0; |
| } |
| |
| closest = _glfwChooseFBConfig(fbconfig, usableConfigs, usableCount); |
| if (!closest) |
| { |
| _glfwInputError(GLFW_FORMAT_UNAVAILABLE, |
| "WGL: Failed to find a suitable pixel format"); |
| |
| _glfw_free(usableConfigs); |
| return 0; |
| } |
| |
| pixelFormat = (int) closest->handle; |
| _glfw_free(usableConfigs); |
| |
| return pixelFormat; |
| } |
| |
| #undef ADD_ATTRIB |
| #undef FIND_ATTRIB_VALUE |
| |
| 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) |
| { |
| // HACK: Use DwmFlush when desktop composition is enabled on Windows Vista and 7 |
| if (!IsWindows8OrGreater() && IsWindowsVistaOrGreater()) |
| { |
| BOOL enabled = FALSE; |
| |
| if (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); |
| assert(window != NULL); |
| |
| window->context.wgl.interval = interval; |
| |
| if (!window->monitor) |
| { |
| // HACK: Disable WGL swap interval when desktop composition is enabled on Windows |
| // Vista and 7 to avoid interfering with DWM vsync |
| if (!IsWindows8OrGreater() && IsWindowsVistaOrGreater()) |
| { |
| BOOL enabled = FALSE; |
| |
| if (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) _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, procname); |
| } |
| |
| static void destroyContextWGL(_GLFWwindow* window) |
| { |
| if (window->context.wgl.handle) |
| { |
| wglDeleteContext(window->context.wgl.handle); |
| window->context.wgl.handle = NULL; |
| } |
| } |
| |
| // Initialize WGL |
| // |
| GLFWbool _glfwInitWGL(void) |
| { |
| PIXELFORMATDESCRIPTOR pfd; |
| HGLRC prc, rc; |
| HDC pdc, dc; |
| |
| if (_glfw.wgl.instance) |
| return GLFW_TRUE; |
| |
| _glfw.wgl.instance = _glfwPlatformLoadModule("opengl32.dll"); |
| if (!_glfw.wgl.instance) |
| { |
| _glfwInputErrorWin32(GLFW_PLATFORM_ERROR, |
| "WGL: Failed to load opengl32.dll"); |
| return GLFW_FALSE; |
| } |
| |
| _glfw.wgl.CreateContext = (PFN_wglCreateContext) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglCreateContext"); |
| _glfw.wgl.DeleteContext = (PFN_wglDeleteContext) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglDeleteContext"); |
| _glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetProcAddress"); |
| _glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetCurrentDC"); |
| _glfw.wgl.GetCurrentContext = (PFN_wglGetCurrentContext) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglGetCurrentContext"); |
| _glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent) |
| _glfwPlatformGetModuleSymbol(_glfw.wgl.instance, "wglMakeCurrent"); |
| _glfw.wgl.ShareLists = (PFN_wglShareLists) |
| _glfwPlatformGetModuleSymbol(_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) |
| _glfwPlatformFreeModule(_glfw.wgl.instance); |
| } |
| |
| #define SET_ATTRIB(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 = choosePixelFormatWGL(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) |
| { |
| SET_ATTRIB(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, |
| WGL_NO_RESET_NOTIFICATION_ARB); |
| } |
| else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET) |
| { |
| SET_ATTRIB(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) |
| { |
| SET_ATTRIB(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
| WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB); |
| } |
| else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH) |
| { |
| SET_ATTRIB(WGL_CONTEXT_RELEASE_BEHAVIOR_ARB, |
| WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB); |
| } |
| } |
| } |
| |
| if (ctxconfig->noerror) |
| { |
| if (_glfw.wgl.ARB_create_context_no_error) |
| SET_ATTRIB(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) |
| { |
| SET_ATTRIB(WGL_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major); |
| SET_ATTRIB(WGL_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor); |
| } |
| |
| if (flags) |
| SET_ATTRIB(WGL_CONTEXT_FLAGS_ARB, flags); |
| |
| if (mask) |
| SET_ATTRIB(WGL_CONTEXT_PROFILE_MASK_ARB, mask); |
| |
| SET_ATTRIB(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 SET_ATTRIB |
| |
| GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* handle) |
| { |
| _GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
| |
| if (_glfw.platform.platformID != GLFW_PLATFORM_WIN32) |
| { |
| _glfwInputError(GLFW_PLATFORM_UNAVAILABLE, |
| "WGL: Platform not initialized"); |
| return NULL; |
| } |
| |
| _GLFWwindow* window = (_GLFWwindow*) handle; |
| assert(window != NULL); |
| |
| if (window->context.source != GLFW_NATIVE_CONTEXT_API) |
| { |
| _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL); |
| return NULL; |
| } |
| |
| return window->context.wgl.handle; |
| } |
| |
| #endif // _GLFW_WIN32 |
| |
