From 8f887b4252208e60e7e86217ec3b72fb639a4e82 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 29 May 2008 13:26:01 +0100 Subject: draw: michal's patch for calling powf... teapot still not quite right --- src/gallium/auxiliary/draw/draw_vs_aos.c | 46 ++++++++++++++++++++++++++++++++ src/gallium/auxiliary/draw/draw_vs_aos.h | 1 + 2 files changed, 47 insertions(+) diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c index 55cabb6df9..725f36b502 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.c +++ b/src/gallium/auxiliary/draw/draw_vs_aos.c @@ -1372,11 +1372,20 @@ static boolean emit_MAD( struct aos_compilation *cp, const struct tgsi_full_inst return TRUE; } +/* A wrapper for powf(). + * Makes sure it is cdecl and operates on floats. + */ +static float PIPE_CDECL _powerf( float x, float y ) +{ + return powf( x, y ); +} + /* Really not sufficient -- need to check for conditions that could * generate inf/nan values, which will slow things down hugely. */ static boolean emit_POW( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { +#if 0 x87_fld_src(cp, &op->FullSrcRegisters[1], 0); /* a1.x */ x87_fld_src(cp, &op->FullSrcRegisters[0], 0); /* a0.x a1.x */ x87_fyl2x(cp->func); /* a1*log2(a0) */ @@ -1384,6 +1393,42 @@ static boolean emit_POW( struct aos_compilation *cp, const struct tgsi_full_inst x87_emit_ex2( cp ); /* 2^(a1*log2(a0)) */ x87_fstp_dest4(cp, &op->FullDstRegisters[0]); +#else + uint i; + + /* For absolute correctness, need to spill/invalidate all XMM regs + * too. + */ + for (i = 0; i < 8; i++) { + if (cp->xmm[i].dirty) + spill(cp, i); + aos_release_xmm_reg(cp, i); + } + + /* Push caller-save (ie scratch) regs. + */ + x86_cdecl_caller_push_regs( cp->func ); + + x86_lea( cp->func, cp->stack_ESP, x86_make_disp(cp->stack_ESP, -8) ); + + x87_fld_src( cp, &op->FullSrcRegisters[1], 0 ); + x87_fstp( cp->func, x86_make_disp( cp->stack_ESP, 4 ) ); + x87_fld_src( cp, &op->FullSrcRegisters[0], 0 ); + x87_fstp( cp->func, x86_make_disp( cp->stack_ESP, 0 ) ); + + x86_mov_reg_imm( cp->func, cp->tmp_EAX, (unsigned long) _powerf ); + x86_call( cp->func, cp->tmp_EAX ); + + x86_lea( cp->func, cp->stack_ESP, x86_make_disp(cp->stack_ESP, 8) ); + + x86_cdecl_caller_pop_regs( cp->func ); + + /* Note retval on x87 stack: + */ + cp->func->x87_stack++; + + x87_fstp_dest4( cp, &op->FullDstRegisters[0] ); +#endif return TRUE; } @@ -1781,6 +1826,7 @@ static boolean build_vertex_program( struct draw_vs_varient_aos_sse *varient, cp.machine_EDX = x86_make_reg(file_REG32, reg_DX); cp.count_ESI = x86_make_reg(file_REG32, reg_SI); cp.temp_EBP = x86_make_reg(file_REG32, reg_BP); + cp.stack_ESP = x86_make_reg( file_REG32, reg_SP ); x86_init_func(cp.func); diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.h b/src/gallium/auxiliary/draw/draw_vs_aos.h index 665b425e68..fb6d43d32e 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.h +++ b/src/gallium/auxiliary/draw/draw_vs_aos.h @@ -160,6 +160,7 @@ struct aos_compilation { struct x86_reg machine_EDX; struct x86_reg count_ESI; /* decrements to zero */ struct x86_reg temp_EBP; + struct x86_reg stack_ESP; }; struct x86_reg aos_get_xmm_reg( struct aos_compilation *cp ); -- cgit v1.2.3