diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_aos.c | 112 |
1 files changed, 56 insertions, 56 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c index e736990acc7..a365d456d1c 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.c +++ b/src/gallium/auxiliary/draw/draw_vs_aos.c @@ -735,23 +735,26 @@ static void set_fpu_round_nearest( struct aos_compilation *cp ) } -static void emit_x87_ex2( struct aos_compilation *cp ) +static void x87_emit_ex2( struct aos_compilation *cp ) { struct x86_reg st0 = x86_make_reg(file_x87, 0); struct x86_reg st1 = x86_make_reg(file_x87, 1); - struct x86_reg st3 = x86_make_reg(file_x87, 3); + int stack = cp->func->x87_stack; set_fpu_round_neg_inf( cp ); - x87_fld(cp->func, st0); /* a a */ - x87_fprndint( cp->func ); /* int(a) a */ - x87_fld(cp->func, st0); /* int(a) int(a) a */ - x87_fstp(cp->func, st3); /* int(a) a int(a)*/ - x87_fsubp(cp->func, st1); /* frac(a) int(a) */ - x87_f2xm1(cp->func); /* (2^frac(a))-1 int(a)*/ - x87_fld1(cp->func); /* 1 (2^frac(a))-1 int(a)*/ - x87_faddp(cp->func, st1); /* 2^frac(a) int(a) */ - x87_fscale(cp->func); /* 2^a */ + x87_fld(cp->func, st0); /* a a */ + x87_fld(cp->func, st0); /* a a a */ + x87_fprndint( cp->func ); /* flr(a) a a*/ + x87_fsubp(cp->func, st1); /* frac(a) a */ + x87_f2xm1(cp->func); /* (2^frac(a))-1 a */ + x87_fld1(cp->func); /* 1 (2^frac(a))-1 a */ + x87_faddp(cp->func, st1); /* 2^frac(a) a */ + x87_fscale(cp->func); /* 2^a a */ + x87_fstp(cp->func, st1); + + assert( stack == cp->func->x87_stack); + } @@ -907,9 +910,7 @@ static boolean emit_LG2( struct aos_compilation *cp, const struct tgsi_full_inst static boolean emit_EX2( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { x87_fld_src(cp, &op->FullSrcRegisters[0], 0); - - emit_x87_ex2(cp); - + x87_emit_ex2(cp); x87_fstp_dest4(cp, &op->FullDstRegisters[0]); return TRUE; } @@ -1084,63 +1085,62 @@ static boolean emit_FRC( struct aos_compilation *cp, const struct tgsi_full_inst static boolean emit_LIT( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { struct x86_reg dst = get_dst_ptr(cp, &op->FullDstRegisters[0]); - struct x86_reg st1 = x86_make_reg(file_x87, 1); - unsigned fixup1, fixup2; unsigned writemask = op->FullDstRegisters[0].DstRegister.WriteMask; - /* Load the interesting parts of arg0: - */ - x87_fld_src(cp, &op->FullSrcRegisters[0], 3); - x87_fld_src(cp, &op->FullSrcRegisters[0], 1); - x87_fld_src(cp, &op->FullSrcRegisters[0], 0); - - if (writemask & TGSI_WRITEMASK_XW) { - x87_fld1(cp->func); - x87_fst_or_nop(cp->func, writemask, 0, dst); - x87_fstp_or_pop(cp->func, writemask, 3, dst); - } if (writemask & TGSI_WRITEMASK_YZ) { + struct x86_reg st1 = x86_make_reg(file_x87, 1); + struct x86_reg st2 = x86_make_reg(file_x87, 2); + + - /* Pre-zero destinations, may be overwritten later... fixme. - */ - x87_fldz(cp->func); - x87_fst_or_nop(cp->func, writemask, 1, dst); - x87_fstp_or_pop(cp->func, writemask, 2, dst); + /* a1' = a1 <= 0 ? 1 : a1; + */ + x87_fldz(cp->func); /* 0 */ + x87_fld1(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 */ + x87_fstp(cp->func, st1); /* a1' 0 */ + x87_fstp(cp->func, st1); /* a1' */ + + x87_fld_src(cp, &op->FullSrcRegisters[0], 3); /* a3 a1' */ + x87_fxch(cp->func, st1); /* a1' a3 */ + - /* Check arg0[0]: + /* Compute pow(a1, a3) */ - x87_fldz(cp->func); /* 0 a0 a1 a3 */ - x87_fucomp(cp->func, st1); /* a0 a1 a3 */ - x87_fnstsw(cp->func, cp->tmp_EAX); - x86_sahf(cp->func); - fixup1 = x86_jcc_forward(cp->func, cc_AE); - - x87_fstp_or_pop(cp->func, writemask, 1, dst); /* a1 a3 */ + x87_fyl2x(cp->func); /* a3*log2(a1) */ + x87_emit_ex2( cp ); /* 2^(a3*log2(a1)) */ - /* Check arg0[1]: - */ - x87_fldz(cp->func); /* 0 a1 a3 */ - x87_fucomp(cp->func, st1); /* a1 a3 */ - x87_fnstsw(cp->func, cp->tmp_EAX); - x86_sahf(cp->func); - fixup2 = x86_jcc_forward(cp->func, cc_AE); - /* Compute pow(a1, a3) + /* a0' = max2(a0, 0): */ - x87_fyl2x(cp->func); /* a3*log2(a1) */ + x87_fldz(cp->func); /* 0 r2 */ + 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 */ - emit_x87_ex2( cp ); /* 2^(a3*log2(a1)) */ + 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_fstp_or_pop(cp->func, writemask, 2, dst); - - /* Land jumps: - */ - x86_fixup_fwd_jump(cp->func, fixup1); - x86_fixup_fwd_jump(cp->func, fixup2); + x87_fpop(cp->func); + x87_fpop(cp->func); + } + + if (writemask & TGSI_WRITEMASK_XW) { + x87_fld1(cp->func); + x87_fst_or_nop(cp->func, writemask, 0, dst); + x87_fstp_or_pop(cp->func, writemask, 3, dst); } return TRUE; @@ -1222,7 +1222,7 @@ static boolean emit_POW( struct aos_compilation *cp, const struct tgsi_full_inst x87_fld_src(cp, &op->FullSrcRegisters[0], 0); /* a0.x a1.x */ x87_fyl2x(cp->func); /* a1*log2(a0) */ - emit_x87_ex2( cp ); /* 2^(a1*log2(a0)) */ + x87_emit_ex2( cp ); /* 2^(a1*log2(a0)) */ x87_fstp_dest4(cp, &op->FullDstRegisters[0]); return TRUE; |