diff options
| author | Tom Stellard <tstellar@gmail.com> | 2010-07-13 21:25:27 -0700 |
|---|---|---|
| committer | Tom Stellard <tstellar@gmail.com> | 2010-09-10 18:18:08 -0700 |
| commit | 63432ecfce5415fbf07f1781ec77b5ea3efff599 (patch) | |
| tree | 903818a193704d2053ce79cf0c8a2d43c3cbaa88 /src/mesa/drivers/dri/r300/compiler/radeon_program.h | |
| parent | d8a36620089e72d431ae853ec168f193f3376782 (diff) | |
r300/compiler: Enable presubtract sources
The r300 compiler can now emit instructions that select from the presubtract
source. A peephole optimization has been added to convert instructions like:
ADD Temp[0].x, none.1, -Temp[1].x into the INV (1 - src0) presubtract
operation.
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_program.h')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_program.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program.h b/src/mesa/drivers/dri/r300/compiler/radeon_program.h index 5582f56d92..f0a77d7b53 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_program.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_program.h @@ -39,7 +39,7 @@ struct radeon_compiler; struct rc_src_register { - unsigned int File:3; + unsigned int File:4; /** Negative values may be used for relative addressing. */ signed int Index:(RC_REGISTER_INDEX_BITS+1); @@ -64,6 +64,11 @@ struct rc_dst_register { unsigned int WriteMask:4; }; +struct rc_presub_instruction { + rc_presubtract_op Opcode; + struct rc_src_register SrcReg[2]; +}; + /** * Instructions are maintained by the compiler in a doubly linked list * of these structures. @@ -108,6 +113,10 @@ struct rc_sub_instruction { /** True if tex instruction should do shadow comparison */ unsigned int TexShadow:1; /*@}*/ + + /** This holds information about the presubtract operation used by + * this instruction. */ + struct rc_presub_instruction PreSub; }; typedef enum { |