| //======================================================================== |
| // GLFW 3.3 EGL - 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" |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| |
| // 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| return "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid"; |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; |
| 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; |
| } |
| |
| _glfw.egl.display = eglGetDisplay(_GLFW_EGL_NATIVE_DISPLAY); |
| 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; |
| 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 |
| { |
| int 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); |
| } |
| |
| window->context.egl.surface = |
| eglCreateWindowSurface(_glfw.egl.display, |
| config, |
| _GLFW_EGL_NATIVE_WINDOW, |
| 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; |
| } |
| |
