gallium/postprocess: document serious issue causing undefined behavior

diff --git a/src/gallium/auxiliary/postprocess/pp_program.c b/src/gallium/auxiliary/postprocess/pp_program.c
index 5c819a9c60328de08629668b2433469967f02827..31e2bee76969f8a7eba52a36c2eb96d6f56933fc 100644 (file)
--- a/src/gallium/auxiliary/postprocess/pp_program.c
+++ b/src/gallium/auxiliary/postprocess/pp_program.c
@@ -53,6 +53,10 @@ pp_init_prog(struct pp_queue_t *ppq, struct pipe_screen *pscreen)
 
    p->screen = pscreen;
    p->pipe = pscreen->context_create(pscreen, NULL);
+
+   /* XXX this doesn't use the cso_context of the state tracker, but creates
+    * its own. Having 2 existing cso_contexts use 1 pipe_context may cause
+    * undefined behavior! */
    p->cso = cso_create_context(p->pipe);
 
    {