diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_structs.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_structs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_structs.h b/src/mesa/drivers/dri/i965/brw_structs.h index aef56958c66..d23ad0d91a0 100644 --- a/src/mesa/drivers/dri/i965/brw_structs.h +++ b/src/mesa/drivers/dri/i965/brw_structs.h @@ -37,6 +37,17 @@ /** Number of general purpose registers (VS, WM, etc) */ #define BRW_MAX_GRF 128 +/** + * First GRF used for the MRF hack. + * + * On gen7, MRFs are no longer used, and contiguous GRFs are used instead. We + * haven't converted our compiler to be aware of this, so it asks for MRFs and + * brw_eu_emit.c quietly converts them to be accesses of the top GRFs. The + * register allocators have to be careful of this to avoid corrupting the "MRF"s + * with actual GRF allocations. + */ +#define GEN7_MRF_HACK_START 112. + /** Number of message register file registers */ #define BRW_MAX_MRF 16 |