#ifndef EGL_WL_bind_wayland_display
#define EGL_WL_bind_wayland_display 1
+struct wl_display;
+
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglBindWaylandDisplayWL(EGLDisplay dpy, struct wl_display *display);
+EGLAPI EGLBoolean EGLAPIENTRY eglUnbindWaylandDisplayWL(EGLDisplay dpy, struct wl_display *display);
+#endif
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLUNBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
+#endif
+
+/*
+ * This is a little different to the tests shipped with EGL implementations,
+ * which wrap the entire thing in #ifndef EGL_WL_bind_wayland_display, then go
+ * on to define both BindWaylandDisplay and QueryWaylandBuffer.
+ *
+ * Unfortunately, some implementations (particularly the version of Mesa shipped
+ * in Ubuntu 12.04) define EGL_WL_bind_wayland_display, but then only provide
+ * prototypes for (Un)BindWaylandDisplay, completely omitting
+ * QueryWaylandBuffer.
+ *
+ * Detect this, and provide our own definitions if necessary.
+ */
+#ifndef EGL_WAYLAND_BUFFER_WL
#define EGL_WAYLAND_BUFFER_WL 0x31D5 /* eglCreateImageKHR target */
#define EGL_WAYLAND_PLANE_WL 0x31D6 /* eglCreateImageKHR target */
#define EGL_TEXTURE_Y_XUXV_WL 0x31D9
#define EGL_TEXTURE_EXTERNAL_WL 0x31DA
-struct wl_display;
struct wl_resource;
#ifdef EGL_EGLEXT_PROTOTYPES
-EGLAPI EGLBoolean EGLAPIENTRY eglBindWaylandDisplayWL(EGLDisplay dpy, struct wl_display *display);
-EGLAPI EGLBoolean EGLAPIENTRY eglUnbindWaylandDisplayWL(EGLDisplay dpy, struct wl_display *display);
EGLAPI EGLBoolean EGLAPIENTRY eglQueryWaylandBufferWL(EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
#endif
-typedef EGLBoolean (EGLAPIENTRYP PFNEGLBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
-typedef EGLBoolean (EGLAPIENTRYP PFNEGLUNBINDWAYLANDDISPLAYWL) (EGLDisplay dpy, struct wl_display *display);
typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYWAYLANDBUFFERWL) (EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
#endif