Fix gizmo handles in GLES2 backend

drivers/gles2/rasterizer_storage_gles2.cpp

@@ -4229,7 +4229,11 @@ void RasterizerStorageGLES2::initialize() {
 	}
 
 #ifdef GLES_OVER_GL
+	//this needs to be enabled manually in OpenGL 2.1
+
 	glEnable(_EXT_TEXTURE_CUBE_MAP_SEAMLESS);
+	glEnable(GL_POINT_SPRITE);
+	glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
 #endif
 
 	config.force_vertex_shading = GLOBAL_GET("rendering/quality/shading/force_vertex_shading");