Add glfwGetGLXWindow

README.md

@@ -71,6 +71,7 @@ used by the tests and examples and are not required to build the library.
  - Added `GLFW_NO_API` for creating window without contexts
  - Added `GLFW_CONTEXT_NO_ERROR` context hint for `GL_KHR_no_error` support
  - Added `GLFW_TRUE` and `GLFW_FALSE` as client API independent boolean values
+ - Added `glfwGetGLXWindow` to query the `GLXWindow` of a window
  - Removed dependency on external OpenGL or OpenGL ES headers
  - [Win32] Added support for Windows 8.1 per-monitor DPI
  - [Cocoa] Removed support for OS X 10.6

include/GLFW/glfw3native.h

@@ -314,6 +314,21 @@ GLFWAPI Window glfwGetX11Window(GLFWwindow* window);
  *  @ingroup native
  */
 GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* window);
+
+/*! @brief Returns the `GLXWindow` of the specified window.
+ *
+ *  @return The `GLXWindow` of the specified window, or `None` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @par Thread Safety
+ *  This function may be called from any thread.  Access is not synchronized.
+ *
+ *  @par History
+ *  Added in GLFW 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* window);
 #endif
 
 #if defined(GLFW_EXPOSE_NATIVE_WAYLAND)

src/glx_context.c

@@ -616,3 +616,17 @@ GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* handle)
     return window->context.glx.handle;
 }
 
+GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* handle)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+    _GLFW_REQUIRE_INIT_OR_RETURN(None);
+
+    if (window->context.api == GLFW_NO_API)
+    {
+        _glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
+        return None;
+    }
+
+    return window->context.glx.window;
+}
+