diff options
| author | Michal Krol <michal@ubuntu-vbox.(none)> | 2008-06-02 21:51:31 +0200 |
|---|---|---|
| committer | Michal Krol <michal@ubuntu-vbox.(none)> | 2008-06-02 21:51:31 +0200 |
| commit | 58cccc8d6b49c75eeabe9b61055e69de824ff757 (patch) | |
| tree | e5803b9dcf7d07b9a003a68b16583302333ccb0c | |
| parent | 969a207fe356d152b65085a9113502c7fbb5712e (diff) | |
draw: Fix DP3 implementation by replacing SSE with x87 version.
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_aos.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c index 725f36b5025..5bfcd96ac3d 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.c +++ b/src/gallium/auxiliary/draw/draw_vs_aos.c @@ -962,8 +962,35 @@ static boolean emit_COS( struct aos_compilation *cp, const struct tgsi_full_inst return TRUE; } +#if 1 + +/* The x87 version. + */ +static boolean emit_DP3( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) +{ + struct x86_reg st1 = x86_make_reg( file_x87, 1 ); + + x87_fld_src( cp, &op->FullSrcRegisters[0], 0 ); + x87_fld_src( cp, &op->FullSrcRegisters[1], 0 ); + x87_fmulp( cp->func, st1 ); + x87_fld_src( cp, &op->FullSrcRegisters[0], 1 ); + x87_fld_src( cp, &op->FullSrcRegisters[1], 1 ); + x87_fmulp( cp->func, st1 ); + x87_faddp( cp->func, st1 ); + x87_fld_src( cp, &op->FullSrcRegisters[0], 2 ); + x87_fld_src( cp, &op->FullSrcRegisters[1], 2 ); + x87_fmulp( cp->func, st1 ); + x87_faddp( cp->func, st1 ); + + x87_fstp_dest4( cp, &op->FullDstRegisters[0] ); + + return TRUE; +} + +#else /* The dotproduct instructions don't really do that well in sse: + * XXX: produces wrong results -- disabled. */ static boolean emit_DP3( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { @@ -985,7 +1012,7 @@ static boolean emit_DP3( struct aos_compilation *cp, const struct tgsi_full_inst return TRUE; } - +#endif static boolean emit_DP4( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { |