diff options
Diffstat (limited to 'vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/egl_context.c')
| -rw-r--r-- | vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/egl_context.c | 790 |
1 files changed, 790 insertions, 0 deletions
diff --git a/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/egl_context.c b/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/egl_context.c new file mode 100644 index 0000000..6b34f72 --- /dev/null +++ b/vendor/github.com/go-gl/glfw/v3.3/glfw/glfw/src/egl_context.c @@ -0,0 +1,790 @@ +//======================================================================== +// 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. +// +//======================================================================== +// Please use C89 style variable declarations in this file because VS 2010 +//======================================================================== + +#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 = desired->doublebuffer; + + 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 + index = 0; + + if (fbconfig->sRGB) + { + if (_glfw.egl.KHR_gl_colorspace) + setAttrib(EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR); + } + + if (!fbconfig->doublebuffer) + setAttrib(EGL_RENDER_BUFFER, EGL_SINGLE_BUFFER); + + 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.source != GLFW_EGL_CONTEXT_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.source != GLFW_EGL_CONTEXT_API) + { + _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL); + return EGL_NO_SURFACE; + } + + return window->context.egl.surface; +} + |