i965: Avoid re-uploading the index buffer when we don't need to.

[mesa.git] / src / mesa / drivers / dri / i965 / brw_context.h

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 00d5980dd08eb0277b77b1d46dd13c297461e553..847c44ed83ac3cf1867fb211c4ae9a4810975b2b 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -143,6 +143,7 @@ struct brw_context;
 #define BRW_NEW_DEPTH_BUFFER           0x20000
 #define BRW_NEW_NR_WM_SURFACES         0x40000
 #define BRW_NEW_NR_VS_SURFACES         0x80000
+#define BRW_NEW_INDEX_BUFFER           0x100000
 
 struct brw_state_flags {
    /** State update flags signalled by mesa internals */
@@ -505,8 +506,15 @@ struct brw_context
        */
       const struct _mesa_index_buffer *ib;
 
+      /* Updates to these fields are signaled by BRW_NEW_INDEX_BUFFER. */
       dri_bo *bo;
       unsigned int offset;
+      unsigned int size;
+      /* Offset to index buffer index to use in CMD_3D_PRIM so that we can
+       * avoid re-uploading the IB packet over and over if we're actually
+       * referencing the same index buffer.
+       */
+      unsigned int start_vertex_offset;
    } ib;
 
    /* Active vertex program: