// Create the OpenGL or OpenGL ES context // GLFWbool _glfwCreateContextGLX(_GLFWwindow* window, const _GLFWctxconfig* ctxconfig, const _GLFWfbconfig* fbconfig) { int attribs[40]; GLXFBConfig native = NULL; GLXContext share = NULL; if (ctxconfig->share) share = ctxconfig->share->context.glx.handle; if (!chooseFBConfig(fbconfig, &native, window->transparent)) { _glfwInputError(GLFW_FORMAT_UNAVAILABLE, "GLX: Failed to find a suitable GLXFBConfig"); return GLFW_FALSE; } if (ctxconfig->api == GLFW_OPENGL_ES_API) { if (!_glfw.glx.ARB_create_context || !_glfw.glx.ARB_create_context_profile || !_glfw.glx.EXT_create_context_es2_profile) { _glfwInputError(GLFW_API_UNAVAILABLE, "GLX: OpenGL ES requested but GLX_EXT_create_context_es2_profile is unavailable"); return GLFW_FALSE; } } if (ctxconfig->forward) { if (!_glfw.glx.ARB_create_context) { _glfwInputError(GLFW_VERSION_UNAVAILABLE, "GLX: Forward compatibility requested but GLX_ARB_create_context_profile is unavailable"); return GLFW_FALSE; } } if (ctxconfig->profile) { if (!_glfw.glx.ARB_create_context || !_glfw.glx.ARB_create_context_profile) { _glfwInputError(GLFW_VERSION_UNAVAILABLE, "GLX: An OpenGL profile requested but GLX_ARB_create_context_profile is unavailable"); return GLFW_FALSE; } } _glfwGrabErrorHandlerX11(); if (_glfw.glx.ARB_create_context) { int index = 0, mask = 0, flags = 0; if (ctxconfig->api == GLFW_OPENGL_API) { if (ctxconfig->forward) flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB; if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE) mask |= GLX_CONTEXT_CORE_PROFILE_BIT_ARB; else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE) mask |= GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB; } else mask |= GLX_CONTEXT_ES2_PROFILE_BIT_EXT; if (ctxconfig->debug) flags |= GLX_CONTEXT_DEBUG_BIT_ARB; if (ctxconfig->noerror) flags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR; if (ctxconfig->robustness) { if (_glfw.glx.ARB_create_context_robustness) { if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION) { setGLXattrib(GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, GLX_NO_RESET_NOTIFICATION_ARB); } else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET) { setGLXattrib(GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, GLX_LOSE_CONTEXT_ON_RESET_ARB); } flags |= GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB; } } if (ctxconfig->release) { if (_glfw.glx.ARB_context_flush_control) { if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE) { setGLXattrib(GLX_CONTEXT_RELEASE_BEHAVIOR_ARB, GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB); } else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH) { setGLXattrib(GLX_CONTEXT_RELEASE_BEHAVIOR_ARB, GLX_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) { setGLXattrib(GLX_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major); setGLXattrib(GLX_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor); } if (mask) setGLXattrib(GLX_CONTEXT_PROFILE_MASK_ARB, mask); if (flags) setGLXattrib(GLX_CONTEXT_FLAGS_ARB, flags); setGLXattrib(None, None); window->context.glx.handle = _glfw.glx.CreateContextAttribsARB(_glfw.x11.display, native, share, True, attribs); // HACK: This is a fallback for broken versions of the Mesa // implementation of GLX_ARB_create_context_profile that fail // default 1.0 context creation with a GLXBadProfileARB error in // violation of the extension spec if (!window->context.glx.handle) { if (_glfw.x11.errorCode == _glfw.glx.errorBase + GLXBadProfileARB && ctxconfig->api == GLFW_OPENGL_API && ctxconfig->profile == GLFW_OPENGL_ANY_PROFILE && ctxconfig->forward == GLFW_FALSE) { window->context.glx.handle = createLegacyContext(window, native, share); } } } else window->context.glx.handle = createLegacyContext(window, native, share); _glfwReleaseErrorHandlerX11(); if (!window->context.glx.handle) { _glfwInputErrorX11(GLFW_VERSION_UNAVAILABLE, "GLX: Failed to create context"); return GLFW_FALSE; } window->context.glx.window = glXCreateWindow(_glfw.x11.display, native, window->x11.handle, NULL); if (!window->context.glx.window) { _glfwInputError(GLFW_PLATFORM_ERROR, "GLX: Failed to create window"); return GLFW_FALSE; } return GLFW_TRUE; }
// Check whether the running window manager is EWMH-compliant // static void detectEWMH(void) { Window* windowFromRoot = NULL; Window* windowFromChild = NULL; // First we need a couple of atoms, which should already be there Atom supportingWmCheck = XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", True); Atom wmSupported = XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", True); if (supportingWmCheck == None || wmSupported == None) return; // Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window if (_glfwGetWindowPropertyX11(_glfw.x11.root, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromRoot) != 1) { if (windowFromRoot) XFree(windowFromRoot); return; } _glfwGrabErrorHandlerX11(); // It should be the ID of a child window (of the root) // Then we look for the same property on the child window if (_glfwGetWindowPropertyX11(*windowFromRoot, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromChild) != 1) { XFree(windowFromRoot); if (windowFromChild) XFree(windowFromChild); return; } _glfwReleaseErrorHandlerX11(); // It should be the ID of that same child window if (*windowFromRoot != *windowFromChild) { XFree(windowFromRoot); XFree(windowFromChild); return; } XFree(windowFromRoot); XFree(windowFromChild); // We are now fairly sure that an EWMH-compliant window manager is running Atom* supportedAtoms; unsigned long atomCount; // Now we need to check the _NET_SUPPORTED property of the root window // It should be a list of supported WM protocol and state atoms atomCount = _glfwGetWindowPropertyX11(_glfw.x11.root, wmSupported, XA_ATOM, (unsigned char**) &supportedAtoms); // See which of the atoms we support that are supported by the WM _glfw.x11.NET_WM_STATE = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE"); _glfw.x11.NET_WM_STATE_ABOVE = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_ABOVE"); _glfw.x11.NET_WM_STATE_FULLSCREEN = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN"); _glfw.x11.NET_WM_FULLSCREEN_MONITORS = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_FULLSCREEN_MONITORS"); _glfw.x11.NET_WM_NAME = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_NAME"); _glfw.x11.NET_WM_ICON_NAME = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_ICON_NAME"); _glfw.x11.NET_WM_PID = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_PID"); _glfw.x11.NET_WM_PING = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_PING"); _glfw.x11.NET_ACTIVE_WINDOW = getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW"); _glfw.x11.NET_FRAME_EXTENTS = getSupportedAtom(supportedAtoms, atomCount, "_NET_FRAME_EXTENTS"); _glfw.x11.NET_REQUEST_FRAME_EXTENTS = getSupportedAtom(supportedAtoms, atomCount, "_NET_REQUEST_FRAME_EXTENTS"); _glfw.x11.NET_WM_BYPASS_COMPOSITOR = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_BYPASS_COMPOSITOR"); XFree(supportedAtoms); }
// Check whether the running window manager is EWMH-compliant // static void detectEWMH(void) { Window* windowFromRoot = NULL; Window* windowFromChild = NULL; // First we need a couple of atoms const Atom supportingWmCheck = XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", False); const Atom wmSupported = XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", False); // Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window if (!_glfwGetWindowPropertyX11(_glfw.x11.root, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromRoot)) { return; } _glfwGrabErrorHandlerX11(); // It should be the ID of a child window (of the root) // Then we look for the same property on the child window if (!_glfwGetWindowPropertyX11(*windowFromRoot, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromChild)) { XFree(windowFromRoot); return; } _glfwReleaseErrorHandlerX11(); // It should be the ID of that same child window if (*windowFromRoot != *windowFromChild) { XFree(windowFromRoot); XFree(windowFromChild); return; } XFree(windowFromRoot); XFree(windowFromChild); // We are now fairly sure that an EWMH-compliant window manager is running Atom* supportedAtoms; unsigned long atomCount; // Now we need to check the _NET_SUPPORTED property of the root window // It should be a list of supported WM protocol and state atoms atomCount = _glfwGetWindowPropertyX11(_glfw.x11.root, wmSupported, XA_ATOM, (unsigned char**) &supportedAtoms); // See which of the atoms we support that are supported by the WM _glfw.x11.NET_WM_STATE = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE"); _glfw.x11.NET_WM_STATE_ABOVE = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_ABOVE"); _glfw.x11.NET_WM_STATE_FULLSCREEN = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN"); _glfw.x11.NET_WM_STATE_MAXIMIZED_VERT = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_VERT"); _glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_HORZ"); _glfw.x11.NET_WM_FULLSCREEN_MONITORS = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_FULLSCREEN_MONITORS"); _glfw.x11.NET_WM_WINDOW_TYPE = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE"); _glfw.x11.NET_WM_WINDOW_TYPE_NORMAL = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE_NORMAL"); _glfw.x11.NET_ACTIVE_WINDOW = getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW"); _glfw.x11.NET_FRAME_EXTENTS = getSupportedAtom(supportedAtoms, atomCount, "_NET_FRAME_EXTENTS"); _glfw.x11.NET_REQUEST_FRAME_EXTENTS = getSupportedAtom(supportedAtoms, atomCount, "_NET_REQUEST_FRAME_EXTENTS"); if (supportedAtoms) XFree(supportedAtoms); }