r300: document r300_fragment_program_cont struct

diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index 32104b8158b59341ec9f0f13c4cb132be2df4ed8..f40e8ac39491f8850b8e9a36741ee2e129c70176 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -569,7 +569,12 @@ struct r300_fragment_program {
 };
 
 struct r300_fragment_program_cont {
+       /* This is the unmodified fragment program mesa provided us with.
+        * We need to keep it unchanged because we may need to create another
+        * hw specific fragment program based on this
+        */
        struct gl_fragment_program Base;
+       /* This is the list of hw specific fragment programs derived from Base */
        struct r300_fragment_program *progs;
 };