// Initialize EGL
//
int _glfwInitContextAPI(void)
{
if (!_glfwInitTLS())
return GL_FALSE;
_glfw.egl.display = eglGetDisplay((EGLNativeDisplayType)_GLFW_EGL_NATIVE_DISPLAY);
if (_glfw.egl.display == EGL_NO_DISPLAY)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"EGL: Failed to get EGL display: %s",
getErrorString(eglGetError()));
return GL_FALSE;
}
if (!eglInitialize(_glfw.egl.display,
&_glfw.egl.versionMajor,
&_glfw.egl.versionMinor))
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"EGL: Failed to initialize EGL: %s",
getErrorString(eglGetError()));
return GL_FALSE;
}
if (_glfwPlatformExtensionSupported("EGL_KHR_create_context"))
_glfw.egl.KHR_create_context = GL_TRUE;
return GL_TRUE;
}
// Initialize WGL
//
int _glfwInitContextAPI(void)
{
if (!_glfwInitTLS())
return GL_FALSE;
_glfw.wgl.opengl32.instance = LoadLibraryW(L"opengl32.dll");
if (!_glfw.wgl.opengl32.instance)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to load opengl32.dll");
return GL_FALSE;
}
return GL_TRUE;
}
// Initialize GLX
//
int _glfwInitContextAPI(void)
{
if (!_glfwInitTLS())
return GL_FALSE;
#ifdef _GLFW_DLOPEN_LIBGL
_glfw.glx.libGL = dlopen("libGL.so.1", RTLD_LAZY | RTLD_GLOBAL);
if (!_glfw.glx.libGL)
{
_glfwInputError(GLFW_API_UNAVAILABLE, "GLX: Failed to find libGL");
return GL_FALSE;
}
#endif
if (!glXQueryExtension(_glfw.x11.display,
&_glfw.glx.errorBase,
&_glfw.glx.eventBase))
{
_glfwInputError(GLFW_API_UNAVAILABLE, "GLX: GLX extension not found");
return GL_FALSE;
}
if (!glXQueryVersion(_glfw.x11.display,
&_glfw.glx.versionMajor,
&_glfw.glx.versionMinor))
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"GLX: Failed to query GLX version");
return GL_FALSE;
}
if (_glfw.glx.versionMajor == 1 && _glfw.glx.versionMinor < 3)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"GLX: GLX version 1.3 is required");
return GL_FALSE;
}
if (_glfwPlatformExtensionSupported("GLX_EXT_swap_control"))
{
_glfw.glx.SwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)
_glfwPlatformGetProcAddress("glXSwapIntervalEXT");
if (_glfw.glx.SwapIntervalEXT)
_glfw.glx.EXT_swap_control = GL_TRUE;
}
if (_glfwPlatformExtensionSupported("GLX_SGI_swap_control"))
{
_glfw.glx.SwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)
_glfwPlatformGetProcAddress("glXSwapIntervalSGI");
if (_glfw.glx.SwapIntervalSGI)
_glfw.glx.SGI_swap_control = GL_TRUE;
}
if (_glfwPlatformExtensionSupported("GLX_MESA_swap_control"))
{
_glfw.glx.SwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC)
_glfwPlatformGetProcAddress("glXSwapIntervalMESA");
if (_glfw.glx.SwapIntervalMESA)
_glfw.glx.MESA_swap_control = GL_TRUE;
}
if (_glfwPlatformExtensionSupported("GLX_ARB_multisample"))
_glfw.glx.ARB_multisample = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_framebuffer_sRGB"))
_glfw.glx.ARB_framebuffer_sRGB = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context"))
{
_glfw.glx.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)
_glfwPlatformGetProcAddress("glXCreateContextAttribsARB");
if (_glfw.glx.CreateContextAttribsARB)
_glfw.glx.ARB_create_context = GL_TRUE;
}
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_robustness"))
_glfw.glx.ARB_create_context_robustness = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_profile"))
_glfw.glx.ARB_create_context_profile = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_EXT_create_context_es2_profile"))
_glfw.glx.EXT_create_context_es2_profile = GL_TRUE;
if (_glfwPlatformExtensionSupported("GLX_ARB_context_flush_control"))
_glfw.glx.ARB_context_flush_control = GL_TRUE;
return GL_TRUE;
}