gallium: implement full reference counting for vertex/fragment programs

Use _mesa_reference_vert/fragprog() wherever we assign program pointers.
Fixes a memory corruption bug found with glean/api2 test.
Another memory bug involving shaders yet to be fixed...

Picked from gallium-0.1

1 files changed, 22 insertions, 0 deletions

diff --git a/src/mesa/shader/program.h b/src/mesa/shader/program.h
index 414a57d39cc..08fe576afc1 100644
--- a/src/mesa/shader/program.h
+++ b/src/mesa/shader/program.h
@@ -83,6 +83,28 @@ _mesa_delete_program(GLcontext *ctx, struct gl_program *prog);
 extern struct gl_program *
 _mesa_lookup_program(GLcontext *ctx, GLuint id);
 
+extern void
+_mesa_reference_program(GLcontext *ctx,
+                        struct gl_program **ptr,
+                        struct gl_program *prog);
+
+static INLINE void
+_mesa_reference_vertprog(GLcontext *ctx,
+                         struct gl_vertex_program **ptr,
+                         struct gl_vertex_program *prog)
+{
+   _mesa_reference_program(ctx, (struct gl_program **) ptr,
+                           (struct gl_program *) prog);
+}
+
+static INLINE void
+_mesa_reference_fragprog(GLcontext *ctx,
+                         struct gl_fragment_program **ptr,
+                         struct gl_fragment_program *prog)
+{
+   _mesa_reference_program(ctx, (struct gl_program **) ptr,
+                           (struct gl_program *) prog);
+}
 
 extern struct gl_program *
 _mesa_clone_program(GLcontext *ctx, const struct gl_program *prog);