diff options
| author | Eric Anholt <eric@anholt.net> | 2009-08-11 14:48:03 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-08-12 12:43:42 -0700 |
| commit | 255e5be265133280293bbfd8b2f9b74b2dec50bb (patch) | |
| tree | 4658e135973b453cccffdb410fec62c555495b09 /src/mesa/drivers/dri/i965/brw_context.h | |
| parent | a245c05dd3a1ca48204dd84252e6964aba91d4df (diff) | |
i965: Avoid re-uploading the index buffer when we don't need to.
No performance difference proven at 95% confidence with my GLSL demo (n=10).
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_context.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index 00d5980dd0..847c44ed83 100644 --- 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: |