diff --git a/auto/Makefile b/auto/Makefile
index be100ae..8a71e59 100644
--- a/auto/Makefile
+++ b/auto/Makefile
@@ -117,6 +117,11 @@ $(EXT)/.dummy: OpenGL-Registry/.dummy EGL-Registry/.dummy
 	rm -f $(EXT)/WGL_*
 	$(PYTHON) $(BIN)/parse_xml.py OpenGL-Registry/xml/wgl.xml --api wgl --extensions extensions/gl
 	@echo "--------------------------------------------------------------------"
+	@echo "GLX descriptors"
+	@echo "--------------------------------------------------------------------"
+	rm -f $(EXT)/GLX_*
+	$(PYTHON) $(BIN)/parse_xml.py OpenGL-Registry/xml/glx.xml --api glx --extensions extensions/gl
+	@echo "--------------------------------------------------------------------"
 	@echo "EGL descriptors"
 	@echo "--------------------------------------------------------------------"
 	$(PYTHON) $(BIN)/parse_xml.py EGL-Registry/api/egl.xml --api egl --extensions extensions/gl
diff --git a/auto/core/gl/GLX_EXT_scene_marker b/auto/core/gl/GLX_EXT_scene_marker
new file mode 100644
index 0000000..064caac
--- /dev/null
+++ b/auto/core/gl/GLX_EXT_scene_marker
@@ -0,0 +1,4 @@
+GLX_EXT_scene_marker
+https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_scene_marker.txt
+GLX_EXT_scene_marker
+
diff --git a/auto/core/gl/GLX_SGIS_color_range b/auto/core/gl/GLX_SGIS_color_range
new file mode 100644
index 0000000..9286cff
--- /dev/null
+++ b/auto/core/gl/GLX_SGIS_color_range
@@ -0,0 +1,4 @@
+GLX_SGIS_color_range
+https://www.khronos.org/registry/OpenGL/extensions/SGIS/GLX_SGIS_color_range.txt
+GLX_SGIS_color_range
+
diff --git a/auto/core/gl/GL_EXT_scene_marker b/auto/core/gl/GL_EXT_scene_marker
new file mode 100644
index 0000000..504efcf
--- /dev/null
+++ b/auto/core/gl/GL_EXT_scene_marker
@@ -0,0 +1,6 @@
+GL_EXT_scene_marker
+https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_scene_marker.txt
+GL_EXT_scene_marker
+
+	void glBeginSceneEXT (void)
+	void glEndSceneEXT (void)