Improved X11 display opening failure.

ago%!(EXTRA string=10 years) · 2205bdd469
parent 0f3b69c79d
commit 2205bdd469
1 changed files with 12 additions and 1 deletions
--- a/src/x11_init.c
+++ b/src/x11_init.c
@ -719,7 +719,18 @@ int _glfwPlatformInit(void)
    _glfw.x11.display = XOpenDisplay(NULL);
    if (!_glfw.x11.display)
    {
-        _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to open X display");
+        const char* display = getenv("DISPLAY");
+        if (display)
+        {
+            _glfwInputError(GLFW_PLATFORM_ERROR,
+                            "X11: Failed to open display %s", display);
+        }
+        else
+        {
+            _glfwInputError(GLFW_PLATFORM_ERROR,
+                            "X11: The DISPLAY environment variable is missing");
+        }
+
        return GL_FALSE;
    }