ureg: add a mechanism to get the built tokens rather than a full shader

Previously ureg would always call the driver's create-shader function.  This
allows the caller the opportunity to hold onto the tokens if it needs to
reuse them, eg. to create an internal draw shader.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
index 48aeaaf459d..f04f443b9e7 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
@@ -82,10 +82,21 @@ ureg_create( unsigned processor );
 const struct tgsi_token *
 ureg_finalize( struct ureg_program * );
 
+/* Create and return a shader:
+ */
 void *
 ureg_create_shader( struct ureg_program *,
                     struct pipe_context *pipe );
 
+
+/* Alternately, return the built token stream and hand ownership of
+ * that memory to the caller:
+ */
+const struct tgsi_token *
+ureg_get_tokens( struct ureg_program *ureg,
+                 unsigned *nr_tokens );
+
+
 void 
 ureg_destroy( struct ureg_program * );