gallium: in st_program_string_notify() free shader tokens.

When the shader instructions change, free the TGSI tokens.  This signals the
state tracker to recompile the shader.  Fixes a regression caused by recent
shader/state-tracker changes.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_cb_program.c b/src/mesa/state_tracker/st_cb_program.c
index 4dc76f19b1..0a62e20e0c 100644
--- a/src/mesa/state_tracker/st_cb_program.c
+++ b/src/mesa/state_tracker/st_cb_program.c
@@ -178,6 +178,11 @@ static void st_program_string_notify( GLcontext *ctx,
 
       stfp->param_state = stfp->Base.Base.Parameters->StateFlags;
 
+      if (stfp->state.tokens) {
+         FREE((void *) stfp->state.tokens);
+         stfp->state.tokens = NULL;
+      }
+
       if (st->fp == stfp)
 	 st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
    }
@@ -201,6 +206,11 @@ static void st_program_string_notify( GLcontext *ctx,
 
       stvp->param_state = stvp->Base.Base.Parameters->StateFlags;
 
+      if (stvp->state.tokens) {
+         FREE((void *) stvp->state.tokens);
+         stvp->state.tokens = NULL;
+      }
+
       if (st->vp == stvp)
 	 st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
    }