diff options
| author | Keith Whitwell <keith@tungstengraphics.com> | 2008-05-22 20:22:15 +0100 |
|---|---|---|
| committer | Keith Whitwell <keith@tungstengraphics.com> | 2008-05-23 09:16:58 +0100 |
| commit | 7106da136069f865747e03c30ca245bc030b241b (patch) | |
| tree | e2a2a597eb64a5f125a0104d03ee74c54aa46599 | |
| parent | 43df4642f1d2f3d2673a1d5e4f5126f5175fb899 (diff) | |
draw: correct but slow LIT() in aos varient
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_aos.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c index 93bb4f9bc0..930914f609 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.c +++ b/src/gallium/auxiliary/draw/draw_vs_aos.c @@ -1093,10 +1093,12 @@ static boolean emit_LIT( struct aos_compilation *cp, const struct tgsi_full_inst - /* a1' = a1 <= 0 ? 1 : a1; + /* a1' = a1 <= 0 ? 1 : a1; + * + * Note: use 1.0 to avoid passing zero to */ - x87_fldz(cp->func); /* 0 */ - x87_fld1(cp->func); /* 1 0 */ + x87_fldz(cp->func); /* 1 0 */ + x87_fldz(cp->func); /* 1 0 */ x87_fld_src(cp, &op->FullSrcRegisters[0], 1); /* a1 1 0 */ x87_fcomi(cp->func, st2); /* a1 1 0 */ x87_fcmovb(cp->func, st1); /* a1' 1 0 */ @@ -1119,17 +1121,14 @@ static boolean emit_LIT( struct aos_compilation *cp, const struct tgsi_full_inst x87_fld_src(cp, &op->FullSrcRegisters[0], 0); /* a0 0 r2 */ x87_fcomi(cp->func, st1); x87_fcmovb(cp->func, st1); /* a0' 0 r2 */ - x87_fstp(cp->func, st1); /* a0' r2 */ - x87_fxch(cp->func, st1); /* a0' r2 */ x87_fst_or_nop(cp->func, writemask, 1, dst); /* result[1] = a0' */ - x87_fldz(cp->func); /* 0 a0' r2 */ - x87_fcomi(cp->func, st1); /* 0 a0' r2 */ - x87_fcmovnbe(cp->func, st2); /* r2' a0' r2 */ + x87_fcomi(cp->func, st1); /* a0' 0 r2 */ + x87_fcmovnbe(cp->func, st2); /* r2' 0' r2 */ - x87_fstp_or_pop(cp->func, writemask, 2, dst); - x87_fpop(cp->func); + x87_fstp_or_pop(cp->func, writemask, 2, dst); /* 0 r2 */ + x87_fpop(cp->func); /* r2 */ x87_fpop(cp->func); } |