+ res->IsLinked = EGL_FALSE;
+ _eglPutResource(res);
+
+ /* We always unlink before destroy. The driver still owns a reference */
+ assert(res->RefCount);
+}
+
+#ifdef HAVE_X11_PLATFORM
+static EGLBoolean
+_eglParseX11DisplayAttribList(_EGLDisplay *display, const EGLint *attrib_list)
+{
+ int i;
+
+ if (attrib_list == NULL) {
+ return EGL_TRUE;
+ }
+
+ for (i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+ EGLint attrib = attrib_list[i];
+ EGLint value = attrib_list[i + 1];
+
+ /* EGL_EXT_platform_x11 recognizes exactly one attribute,
+ * EGL_PLATFORM_X11_SCREEN_EXT, which is optional.
+ */
+ if (attrib != EGL_PLATFORM_X11_SCREEN_EXT)
+ return _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+
+ display->Options.Platform = (void *)(uintptr_t)value;
+ }
+
+ return EGL_TRUE;
+}
+
+_EGLDisplay*
+_eglGetX11Display(Display *native_display,
+ const EGLint *attrib_list)
+{
+ _EGLDisplay *display = _eglFindDisplay(_EGL_PLATFORM_X11,
+ native_display);
+
+ if (!display) {
+ _eglError(EGL_BAD_ALLOC, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ if (!_eglParseX11DisplayAttribList(display, attrib_list)) {
+ return NULL;
+ }
+
+ return display;
+}
+#endif /* HAVE_X11_PLATFORM */
+
+#ifdef HAVE_DRM_PLATFORM
+_EGLDisplay*
+_eglGetGbmDisplay(struct gbm_device *native_display,
+ const EGLint *attrib_list)
+{
+ /* EGL_MESA_platform_gbm recognizes no attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_DRM, native_display);
+}
+#endif /* HAVE_DRM_PLATFORM */
+
+#ifdef HAVE_WAYLAND_PLATFORM
+_EGLDisplay*
+_eglGetWaylandDisplay(struct wl_display *native_display,
+ const EGLint *attrib_list)
+{
+ /* EGL_EXT_platform_wayland recognizes no attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_WAYLAND, native_display);
+}
+#endif /* HAVE_WAYLAND_PLATFORM */
+
+#ifdef HAVE_SURFACELESS_PLATFORM
+_EGLDisplay*
+_eglGetSurfacelessDisplay(void *native_display,
+ const EGLint *attrib_list)
+{
+ /* This platform has no native display. */
+ if (native_display != NULL) {
+ _eglError(EGL_BAD_PARAMETER, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ /* This platform recognizes no display attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_SURFACELESS, native_display);