ilo: use slab allocator for transfers

Slab allocator is perfect for transfer.  Improved OpenArena performance by 1%
with several casual runs.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/gallium/drivers/ilo/ilo_transfer.h b/src/gallium/drivers/ilo/ilo_transfer.h
index 25bcc442ffc..3ba4bacf749 100644
--- a/src/gallium/drivers/ilo/ilo_transfer.h
+++ b/src/gallium/drivers/ilo/ilo_transfer.h
@@ -28,10 +28,38 @@
 #ifndef ILO_TRANSFER_H
 #define ILO_TRANSFER_H
 
+#include "pipe/p_state.h"
+
 #include "ilo_common.h"
 
+enum ilo_transfer_map_method {
+   /* map() / map_gtt() / map_unsynchronized() */
+   ILO_TRANSFER_MAP_CPU,
+   ILO_TRANSFER_MAP_GTT,
+   ILO_TRANSFER_MAP_UNSYNC,
+
+   /* use staging system buffer */
+   ILO_TRANSFER_MAP_SW_CONVERT,
+   ILO_TRANSFER_MAP_SW_ZS,
+};
+
+struct ilo_transfer {
+   struct pipe_transfer base;
+
+   enum ilo_transfer_map_method method;
+   void *ptr;
+
+   void *staging_sys;
+};
+
 struct ilo_context;
 
+static inline struct ilo_transfer *
+ilo_transfer(struct pipe_transfer *transfer)
+{
+   return (struct ilo_transfer *) transfer;
+}
+
 void
 ilo_init_transfer_functions(struct ilo_context *ilo);