diff options
| author | Brian Paul <brianp@vmware.com> | 2009-02-16 08:25:33 -0700 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-02-16 08:33:03 -0700 |
| commit | c51938afe1626bfccfe38fe2f508bf90e58ca74c (patch) | |
| tree | cf24d911448da721dbd4f975c3c4116659bab970 /src/gallium | |
| parent | ffbe28d25d755bc51d9f865ac176a110f6f8f5e0 (diff) | |
cell: use some SPU intrinsics to get slightly better code in eval_inputs()
Suggested by Jonathan Adamczewski. There may be more places to do this...
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/cell/spu/spu_tri.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_tri.c b/src/gallium/drivers/cell/spu/spu_tri.c index 04e4584b25..d727268475 100644 --- a/src/gallium/drivers/cell/spu/spu_tri.c +++ b/src/gallium/drivers/cell/spu/spu_tri.c @@ -219,10 +219,13 @@ eval_inputs(float x, float y, vector float *fragZ, vector float fragInputs[]) /* linear term */ vector float dadx = setup.coef[attr].dadx; vector float dady = setup.coef[attr].dady; - r0 += fragX * splatx(dadx) + fragY * splatx(dady); - r1 += fragX * splaty(dadx) + fragY * splaty(dady); - r2 += fragX * splatz(dadx) + fragY * splatz(dady); - r3 += fragX * splatw(dadx) + fragY * splatw(dady); + /* Use SPU intrinsics here to get slightly better code. + * originally: r0 += fragX * splatx(dadx) + fragY * splatx(dady); + */ + r0 = spu_madd(fragX, splatx(dadx), spu_madd(fragY, splatx(dady), r0)); + r1 = spu_madd(fragX, splaty(dadx), spu_madd(fragY, splaty(dady), r1)); + r2 = spu_madd(fragX, splatz(dadx), spu_madd(fragY, splatz(dady), r2)); + r3 = spu_madd(fragX, splatw(dadx), spu_madd(fragY, splatw(dady), r3)); if (interp == INTERP_PERSPECTIVE) { /* perspective term */ r0 *= wInv; |