//======================================================================== // GLFW 3.4 EGL - www.glfw.org //------------------------------------------------------------------------ // Copyright (c) 2002-2006 Marcus Geelnard // Copyright (c) 2006-2019 Camilla Löwy // // 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 #include #include #include // Return a description of the specified EGL error // static const char* getEGLErrorString(EGLint error) { switch (error) { case EGL_SUCCESS: return "Success"; case EGL_NOT_INITIALIZED: return "EGL is not or could not be initialized"; case EGL_BAD_ACCESS: return "EGL cannot access a requested resource"; case EGL_BAD_ALLOC: return "EGL failed to allocate resources for the requested operation"; case EGL_BAD_ATTRIBUTE: return "An unrecognized attribute or attribute value was passed in the attribute list"; case EGL_BAD_CONTEXT: return "An EGLContext argument does not name a valid EGL rendering context"; case EGL_BAD_CONFIG: return "An EGLConfig argument does not name a valid EGL frame buffer configuration"; case EGL_BAD_CURRENT_SURFACE: return "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid"; case EGL_BAD_DISPLAY: return "An EGLDisplay argument does not name a valid EGL display connection"; case EGL_BAD_SURFACE: return "An EGLSurface argument does not name a valid surface configured for GL rendering"; case EGL_BAD_MATCH: return "Arguments are inconsistent"; case EGL_BAD_PARAMETER: return "One or more argument values are invalid"; case EGL_BAD_NATIVE_PIXMAP: return "A NativePixmapType argument does not refer to a valid native pixmap"; case EGL_BAD_NATIVE_WINDOW: return "A NativeWindowType argument does not refer to a valid native window"; case EGL_CONTEXT_LOST: return "The application must destroy all contexts and reinitialise"; default: return "ERROR: UNKNOWN EGL ERROR"; } } // Returns the specified attribute of the specified EGLConfig // static int getEGLConfigAttrib(EGLConfig config, int attrib) { int value; eglGetConfigAttrib(_glfw.egl.display, config, attrib, &value); return value; } // Return the EGLConfig most closely matching the specified hints // static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig, const _GLFWfbconfig* desired, EGLConfig* result) { EGLConfig* nativeConfigs; _GLFWfbconfig* usableConfigs; const _GLFWfbconfig* closest; int i, nativeCount, usableCount; eglGetConfigs(_glfw.egl.display, NULL, 0, &nativeCount); if (!nativeCount) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: No EGLConfigs returned"); return GLFW_FALSE; } nativeConfigs = calloc(nativeCount, sizeof(EGLConfig)); eglGetConfigs(_glfw.egl.display, nativeConfigs, nativeCount, &nativeCount); usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig)); usableCount = 0; for (i = 0; i < nativeCount; i++) { const EGLConfig n = nativeConfigs[i]; _GLFWfbconfig* u = usableConfigs + usableCount; // Only consider RGB(A) EGLConfigs if (getEGLConfigAttrib(n, EGL_COLOR_BUFFER_TYPE) != EGL_RGB_BUFFER) continue; // Only consider window EGLConfigs if (!(getEGLConfigAttrib(n, EGL_SURFACE_TYPE) & EGL_WINDOW_BIT)) continue; #if defined(_GLFW_X11) { XVisualInfo vi = {0}; // Only consider EGLConfigs with associated Visuals vi.visualid = getEGLConfigAttrib(n, EGL_NATIVE_VISUAL_ID); if (!vi.visualid) continue; if (desired->transparent) { int count; XVisualInfo* vis = XGetVisualInfo(_glfw.x11.display, VisualIDMask, &vi, &count); if (vis) { u->transparent = _glfwIsVisualTransparentX11(vis[0].visual); XFree(vis); } } } #endif // _GLFW_X11 if (ctxconfig->client == GLFW_OPENGL_ES_API) { if (ctxconfig->major == 1) { if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES_BIT)) continue; } else { if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES2_BIT)) continue; } } else if (ctxconfig->client == GLFW_OPENGL_API) { if (!(getEGLConfigAttrib(n, EGL_RENDERABLE_TYPE) & EGL_OPENGL_BIT)) continue; } u->redBits = getEGLConfigAttrib(n, EGL_RED_SIZE); u->greenBits = getEGLConfigAttrib(n, EGL_GREEN_SIZE); u->blueBits = getEGLConfigAttrib(n, EGL_BLUE_SIZE); u->alphaBits = getEGLConfigAttrib(n, EGL_ALPHA_SIZE); u->depthBits = getEGLConfigAttrib(n, EGL_DEPTH_SIZE); u->stencilBits = getEGLConfigAttrib(n, EGL_STENCIL_SIZE); u->samples = getEGLConfigAttrib(n, EGL_SAMPLES); u->doublebuffer = GLFW_TRUE; u->handle = (uintptr_t) n; usableCount++; } closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount); if (closest) *result = (EGLConfig) closest->handle; free(nativeConfigs); free(usableConfigs); return closest != NULL; } static void makeContextCurrentEGL(_GLFWwindow* window) { if (window) { if (!eglMakeCurrent(_glfw.egl.display, window->context.egl.surface, window->context.egl.surface, window->context.egl.handle)) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: Failed to make context current: %s", getEGLErrorString(eglGetError())); return; } } else { if (!eglMakeCurrent(_glfw.egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: Failed to clear current context: %s", getEGLErrorString(eglGetError())); return; } } _glfwPlatformSetTls(&_glfw.contextSlot, window); } static void swapBuffersEGL(_GLFWwindow* window) { if (window != _glfwPlatformGetTls(&_glfw.contextSlot)) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: The context must be current on the calling thread when swapping buffers"); return; } eglSwapBuffers(_glfw.egl.display, window->context.egl.surface); } static void swapIntervalEGL(int interval) { eglSwapInterval(_glfw.egl.display, interval); } static int extensionSupportedEGL(const char* extension) { const char* extensions = eglQueryString(_glfw.egl.display, EGL_EXTENSIONS); if (extensions) { if (_glfwStringInExtensionString(extension, extensions)) return GLFW_TRUE; } return GLFW_FALSE; } static GLFWglproc getProcAddressEGL(const char* procname) { _GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot); if (window->context.egl.client) { GLFWglproc proc = (GLFWglproc) _glfw_dlsym(window->context.egl.client, procname); if (proc) return proc; } return eglGetProcAddress(procname); } static void destroyContextEGL(_GLFWwindow* window) { #if defined(_GLFW_X11) // NOTE: Do not unload libGL.so.1 while the X11 display is still open, // as it will make XCloseDisplay segfault if (window->context.client != GLFW_OPENGL_API) #endif // _GLFW_X11 { if (window->context.egl.client) { _glfw_dlclose(window->context.egl.client); window->context.egl.client = NULL; } } if (window->context.egl.surface) { eglDestroySurface(_glfw.egl.display, window->context.egl.surface); window->context.egl.surface = EGL_NO_SURFACE; } if (window->context.egl.handle) { eglDestroyContext(_glfw.egl.display, window->context.egl.handle); window->context.egl.handle = EGL_NO_CONTEXT; } } ////////////////////////////////////////////////////////////////////////// ////// GLFW internal API ////// ////////////////////////////////////////////////////////////////////////// // Initialize EGL // GLFWbool _glfwInitEGL(void) { int i; EGLint* attribs = NULL; const char* extensions; const char* sonames[] = { #if defined(_GLFW_EGL_LIBRARY) _GLFW_EGL_LIBRARY, #elif defined(_GLFW_WIN32) "libEGL.dll", "EGL.dll", #elif defined(_GLFW_COCOA) "libEGL.dylib", #elif defined(__CYGWIN__) "libEGL-1.so", #else "libEGL.so.1", #endif NULL }; if (_glfw.egl.handle) return GLFW_TRUE; for (i = 0; sonames[i]; i++) { _glfw.egl.handle = _glfw_dlopen(sonames[i]); if (_glfw.egl.handle) break; } if (!_glfw.egl.handle) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Library not found"); return GLFW_FALSE; } _glfw.egl.prefix = (strncmp(sonames[i], "lib", 3) == 0); _glfw.egl.GetConfigAttrib = (PFN_eglGetConfigAttrib) _glfw_dlsym(_glfw.egl.handle, "eglGetConfigAttrib"); _glfw.egl.GetConfigs = (PFN_eglGetConfigs) _glfw_dlsym(_glfw.egl.handle, "eglGetConfigs"); _glfw.egl.GetDisplay = (PFN_eglGetDisplay) _glfw_dlsym(_glfw.egl.handle, "eglGetDisplay"); _glfw.egl.GetError = (PFN_eglGetError) _glfw_dlsym(_glfw.egl.handle, "eglGetError"); _glfw.egl.Initialize = (PFN_eglInitialize) _glfw_dlsym(_glfw.egl.handle, "eglInitialize"); _glfw.egl.Terminate = (PFN_eglTerminate) _glfw_dlsym(_glfw.egl.handle, "eglTerminate"); _glfw.egl.BindAPI = (PFN_eglBindAPI) _glfw_dlsym(_glfw.egl.handle, "eglBindAPI"); _glfw.egl.CreateContext = (PFN_eglCreateContext) _glfw_dlsym(_glfw.egl.handle, "eglCreateContext"); _glfw.egl.DestroySurface = (PFN_eglDestroySurface) _glfw_dlsym(_glfw.egl.handle, "eglDestroySurface"); _glfw.egl.DestroyContext = (PFN_eglDestroyContext) _glfw_dlsym(_glfw.egl.handle, "eglDestroyContext"); _glfw.egl.CreateWindowSurface = (PFN_eglCreateWindowSurface) _glfw_dlsym(_glfw.egl.handle, "eglCreateWindowSurface"); _glfw.egl.MakeCurrent = (PFN_eglMakeCurrent) _glfw_dlsym(_glfw.egl.handle, "eglMakeCurrent"); _glfw.egl.SwapBuffers = (PFN_eglSwapBuffers) _glfw_dlsym(_glfw.egl.handle, "eglSwapBuffers"); _glfw.egl.SwapInterval = (PFN_eglSwapInterval) _glfw_dlsym(_glfw.egl.handle, "eglSwapInterval"); _glfw.egl.QueryString = (PFN_eglQueryString) _glfw_dlsym(_glfw.egl.handle, "eglQueryString"); _glfw.egl.GetProcAddress = (PFN_eglGetProcAddress) _glfw_dlsym(_glfw.egl.handle, "eglGetProcAddress"); if (!_glfw.egl.GetConfigAttrib || !_glfw.egl.GetConfigs || !_glfw.egl.GetDisplay || !_glfw.egl.GetError || !_glfw.egl.Initialize || !_glfw.egl.Terminate || !_glfw.egl.BindAPI || !_glfw.egl.CreateContext || !_glfw.egl.DestroySurface || !_glfw.egl.DestroyContext || !_glfw.egl.CreateWindowSurface || !_glfw.egl.MakeCurrent || !_glfw.egl.SwapBuffers || !_glfw.egl.SwapInterval || !_glfw.egl.QueryString || !_glfw.egl.GetProcAddress) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: Failed to load required entry points"); _glfwTerminateEGL(); return GLFW_FALSE; } extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS); if (extensions && eglGetError() == EGL_SUCCESS) _glfw.egl.EXT_client_extensions = GLFW_TRUE; if (_glfw.egl.EXT_client_extensions) { _glfw.egl.EXT_platform_base = _glfwStringInExtensionString("EGL_EXT_platform_base", extensions); _glfw.egl.EXT_platform_x11 = _glfwStringInExtensionString("EGL_EXT_platform_x11", extensions); _glfw.egl.EXT_platform_wayland = _glfwStringInExtensionString("EGL_EXT_platform_wayland", extensions); _glfw.egl.ANGLE_platform_angle = _glfwStringInExtensionString("EGL_ANGLE_platform_angle", extensions); _glfw.egl.ANGLE_platform_angle_opengl = _glfwStringInExtensionString("EGL_ANGLE_platform_angle_opengl", extensions); _glfw.egl.ANGLE_platform_angle_d3d = _glfwStringInExtensionString("EGL_ANGLE_platform_angle_d3d", extensions); _glfw.egl.ANGLE_platform_angle_vulkan = _glfwStringInExtensionString("EGL_ANGLE_platform_angle_vulkan", extensions); _glfw.egl.ANGLE_platform_angle_metal = _glfwStringInExtensionString("EGL_ANGLE_platform_angle_metal", extensions); } if (_glfw.egl.EXT_platform_base) { _glfw.egl.GetPlatformDisplayEXT = (PFNEGLGETPLATFORMDISPLAYEXTPROC) eglGetProcAddress("eglGetPlatformDisplayEXT"); _glfw.egl.CreatePlatformWindowSurfaceEXT = (PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC) eglGetProcAddress("eglCreatePlatformWindowSurfaceEXT"); } _glfw.egl.platform = _glfwPlatformGetEGLPlatform(&attribs); if (_glfw.egl.platform) { _glfw.egl.display = eglGetPlatformDisplayEXT(_glfw.egl.platform, _glfwPlatformGetEGLNativeDisplay(), attribs); } else _glfw.egl.display = eglGetDisplay(_glfwPlatformGetEGLNativeDisplay()); free(attribs); if (_glfw.egl.display == EGL_NO_DISPLAY) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to get EGL display: %s", getEGLErrorString(eglGetError())); _glfwTerminateEGL(); return GLFW_FALSE; } if (!eglInitialize(_glfw.egl.display, &_glfw.egl.major, &_glfw.egl.minor)) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to initialize EGL: %s", getEGLErrorString(eglGetError())); _glfwTerminateEGL(); return GLFW_FALSE; } _glfw.egl.KHR_create_context = extensionSupportedEGL("EGL_KHR_create_context"); _glfw.egl.KHR_create_context_no_error = extensionSupportedEGL("EGL_KHR_create_context_no_error"); _glfw.egl.KHR_gl_colorspace = extensionSupportedEGL("EGL_KHR_gl_colorspace"); _glfw.egl.KHR_get_all_proc_addresses = extensionSupportedEGL("EGL_KHR_get_all_proc_addresses"); _glfw.egl.KHR_context_flush_control = extensionSupportedEGL("EGL_KHR_context_flush_control"); return GLFW_TRUE; } // Terminate EGL // void _glfwTerminateEGL(void) { if (_glfw.egl.display) { eglTerminate(_glfw.egl.display); _glfw.egl.display = EGL_NO_DISPLAY; } if (_glfw.egl.handle) { _glfw_dlclose(_glfw.egl.handle); _glfw.egl.handle = NULL; } } #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 _glfwCreateContextEGL(_GLFWwindow* window, const _GLFWctxconfig* ctxconfig, const _GLFWfbconfig* fbconfig) { EGLint attribs[40]; EGLConfig config; EGLContext share = NULL; EGLNativeWindowType native; int index = 0; if (!_glfw.egl.display) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: API not available"); return GLFW_FALSE; } if (ctxconfig->share) share = ctxconfig->share->context.egl.handle; if (!chooseEGLConfig(ctxconfig, fbconfig, &config)) { _glfwInputError(GLFW_FORMAT_UNAVAILABLE, "EGL: Failed to find a suitable EGLConfig"); return GLFW_FALSE; } if (ctxconfig->client == GLFW_OPENGL_ES_API) { if (!eglBindAPI(EGL_OPENGL_ES_API)) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to bind OpenGL ES: %s", getEGLErrorString(eglGetError())); return GLFW_FALSE; } } else { if (!eglBindAPI(EGL_OPENGL_API)) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to bind OpenGL: %s", getEGLErrorString(eglGetError())); return GLFW_FALSE; } } if (_glfw.egl.KHR_create_context) { int mask = 0, flags = 0; if (ctxconfig->client == GLFW_OPENGL_API) { if (ctxconfig->forward) flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR; if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE) mask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR; else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE) mask |= EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; } if (ctxconfig->debug) flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR; if (ctxconfig->robustness) { if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION) { setAttrib(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_NO_RESET_NOTIFICATION_KHR); } else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET) { setAttrib(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_LOSE_CONTEXT_ON_RESET_KHR); } flags |= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR; } if (ctxconfig->noerror) { if (_glfw.egl.KHR_create_context_no_error) setAttrib(EGL_CONTEXT_OPENGL_NO_ERROR_KHR, GLFW_TRUE); } if (ctxconfig->major != 1 || ctxconfig->minor != 0) { setAttrib(EGL_CONTEXT_MAJOR_VERSION_KHR, ctxconfig->major); setAttrib(EGL_CONTEXT_MINOR_VERSION_KHR, ctxconfig->minor); } if (mask) setAttrib(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, mask); if (flags) setAttrib(EGL_CONTEXT_FLAGS_KHR, flags); } else { if (ctxconfig->client == GLFW_OPENGL_ES_API) setAttrib(EGL_CONTEXT_CLIENT_VERSION, ctxconfig->major); } if (_glfw.egl.KHR_context_flush_control) { if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE) { setAttrib(EGL_CONTEXT_RELEASE_BEHAVIOR_KHR, EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR); } else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH) { setAttrib(EGL_CONTEXT_RELEASE_BEHAVIOR_KHR, EGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR); } } setAttrib(EGL_NONE, EGL_NONE); window->context.egl.handle = eglCreateContext(_glfw.egl.display, config, share, attribs); if (window->context.egl.handle == EGL_NO_CONTEXT) { _glfwInputError(GLFW_VERSION_UNAVAILABLE, "EGL: Failed to create context: %s", getEGLErrorString(eglGetError())); return GLFW_FALSE; } // Set up attributes for surface creation index = 0; if (fbconfig->sRGB) { if (_glfw.egl.KHR_gl_colorspace) setAttrib(EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR); } setAttrib(EGL_NONE, EGL_NONE); native = _glfwPlatformGetEGLNativeWindow(window); // HACK: ANGLE does not implement eglCreatePlatformWindowSurfaceEXT // despite reporting EGL_EXT_platform_base if (_glfw.egl.platform && _glfw.egl.platform != EGL_PLATFORM_ANGLE_ANGLE) { window->context.egl.surface = eglCreatePlatformWindowSurfaceEXT(_glfw.egl.display, config, native, attribs); } else { window->context.egl.surface = eglCreateWindowSurface(_glfw.egl.display, config, native, attribs); } if (window->context.egl.surface == EGL_NO_SURFACE) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: Failed to create window surface: %s", getEGLErrorString(eglGetError())); return GLFW_FALSE; } window->context.egl.config = config; // Load the appropriate client library if (!_glfw.egl.KHR_get_all_proc_addresses) { int i; const char** sonames; const char* es1sonames[] = { #if defined(_GLFW_GLESV1_LIBRARY) _GLFW_GLESV1_LIBRARY, #elif defined(_GLFW_WIN32) "GLESv1_CM.dll", "libGLES_CM.dll", #elif defined(_GLFW_COCOA) "libGLESv1_CM.dylib", #else "libGLESv1_CM.so.1", "libGLES_CM.so.1", #endif NULL }; const char* es2sonames[] = { #if defined(_GLFW_GLESV2_LIBRARY) _GLFW_GLESV2_LIBRARY, #elif defined(_GLFW_WIN32) "GLESv2.dll", "libGLESv2.dll", #elif defined(_GLFW_COCOA) "libGLESv2.dylib", #elif defined(__CYGWIN__) "libGLESv2-2.so", #else "libGLESv2.so.2", #endif NULL }; const char* glsonames[] = { #if defined(_GLFW_OPENGL_LIBRARY) _GLFW_OPENGL_LIBRARY, #elif defined(_GLFW_WIN32) #elif defined(_GLFW_COCOA) #else "libGL.so.1", #endif NULL }; if (ctxconfig->client == GLFW_OPENGL_ES_API) { if (ctxconfig->major == 1) sonames = es1sonames; else sonames = es2sonames; } else sonames = glsonames; for (i = 0; sonames[i]; i++) { // HACK: Match presence of lib prefix to increase chance of finding // a matching pair in the jungle that is Win32 EGL/GLES if (_glfw.egl.prefix != (strncmp(sonames[i], "lib", 3) == 0)) continue; window->context.egl.client = _glfw_dlopen(sonames[i]); if (window->context.egl.client) break; } if (!window->context.egl.client) { _glfwInputError(GLFW_API_UNAVAILABLE, "EGL: Failed to load client library"); return GLFW_FALSE; } } window->context.makeCurrent = makeContextCurrentEGL; window->context.swapBuffers = swapBuffersEGL; window->context.swapInterval = swapIntervalEGL; window->context.extensionSupported = extensionSupportedEGL; window->context.getProcAddress = getProcAddressEGL; window->context.destroy = destroyContextEGL; return GLFW_TRUE; } #undef setAttrib // Returns the Visual and depth of the chosen EGLConfig // #if defined(_GLFW_X11) GLFWbool _glfwChooseVisualEGL(const _GLFWwndconfig* wndconfig, const _GLFWctxconfig* ctxconfig, const _GLFWfbconfig* fbconfig, Visual** visual, int* depth) { XVisualInfo* result; XVisualInfo desired; EGLConfig native; EGLint visualID = 0, count = 0; const long vimask = VisualScreenMask | VisualIDMask; if (!chooseEGLConfig(ctxconfig, fbconfig, &native)) { _glfwInputError(GLFW_FORMAT_UNAVAILABLE, "EGL: Failed to find a suitable EGLConfig"); return GLFW_FALSE; } eglGetConfigAttrib(_glfw.egl.display, native, EGL_NATIVE_VISUAL_ID, &visualID); desired.screen = _glfw.x11.screen; desired.visualid = visualID; result = XGetVisualInfo(_glfw.x11.display, vimask, &desired, &count); if (!result) { _glfwInputError(GLFW_PLATFORM_ERROR, "EGL: Failed to retrieve Visual for EGLConfig"); return GLFW_FALSE; } *visual = result->visual; *depth = result->depth; XFree(result); return GLFW_TRUE; } #endif // _GLFW_X11 ////////////////////////////////////////////////////////////////////////// ////// GLFW native API ////// ////////////////////////////////////////////////////////////////////////// GLFWAPI EGLDisplay glfwGetEGLDisplay(void) { _GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_DISPLAY); return _glfw.egl.display; } GLFWAPI EGLContext glfwGetEGLContext(GLFWwindow* handle) { _GLFWwindow* window = (_GLFWwindow*) handle; _GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_CONTEXT); if (window->context.client == GLFW_NO_API) { _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL); return EGL_NO_CONTEXT; } return window->context.egl.handle; } GLFWAPI EGLSurface glfwGetEGLSurface(GLFWwindow* handle) { _GLFWwindow* window = (_GLFWwindow*) handle; _GLFW_REQUIRE_INIT_OR_RETURN(EGL_NO_SURFACE); if (window->context.client == GLFW_NO_API) { _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL); return EGL_NO_SURFACE; } return window->context.egl.surface; }