x3d equ 0 y3d equ 2 z3d equ 4 vec_x equ 0 vec_y equ 4 vec_z equ 8 if 0 ; Ext >= SSE3 calc_bounding_box: ; in: ; xmm0 - normal vector of ray ; xmm1 - light origin ; out: ; eax - axis aligned bounding boxes bit mask .rmx equ [ebp-36] .nray equ [ebp-64] .origin equ [ebp-80] .dirfrac equ [ebp-96] .nrayr equ [ebp-112] .originr equ [ebp-128] .tmin equ [ebp-132] .tmax equ [ebp-136] push ebp mov ebp,esp and ebp,-16 sub esp,160 movss xmm5,[rsscale] shufps xmm5,xmm1,0 movd xmm2,[vect_x] punpcklwd xmm2,[the_zero] cvtdq2ps xmm2,xmm2 subps xmm1,xmm2 movaps .origin,xmm1 mulps xmm0,xmm5 movaps .nray,xmm0 mov esi,matrix lea edi,.rmx call reverse_mx_3x3 ; in: esi - ptr to points(normals], each point(normal) coeficient as dword ; edi - ptr to rotated points(normals) ; ebx - ptr to 3x3 (9 dwords, 36 bytes) rotation matrix ; ecx - number of points(normals) ; reverse transform lea esi,.nray lea edi,.nrayr lea ebx,.rmx mov ecx,1 call rotary lea esi,.origin lea edi,.originr lea ebx,.rmx mov ecx,1 call rotary xor ecx,ecx mov ebx,aabb1 xor eax,eax rcpps xmm7,.nrayr movaps .dirfrac,xmm7 .nx_aabb: movaps xmm5,[ebx] movaps xmm6,[ebx] minps xmm5,[the_zero] maxps xmm6,[the_zero] ; xmm5 - lb corner of AABB with minimal coordinates ; xmm6 - rt cor. of AABB wit maximum coords subps xmm5,.originr subps xmm6,.originr mulps xmm5,.dirfrac ; xmm5 - tx1, ty1 mulps xmm6,.dirfrac ; xmm6 - tx2, ty2 movaps xmm1,xmm6 movaps xmm2,xmm6 minps xmm1,xmm5 maxps xmm2,xmm5 movaps xmm5,xmm1 movaps xmm6,xmm2 shufps xmm5,xmm5,11100001b shufps xmm6,xmm6,11100001b maxss xmm1,xmm5 ;t min minss xmm2,xmm6 ;t max comiss xmm2,xmm1 jb .no_inter .yes: bts eax,ecx .no_inter: add ebx,16 inc ecx cmp ecx,8 jne .nx_aabb ; out: eax - bit mask add esp,160 pop ebp ret end if reverse_mx_3x3: ; esi - source matrix ; edi - desired reversed matrix push ebp mov ebp,esp sub esp,4 .det equ ebp-4 fninit fld dword[esi] fmul dword[esi+16] fmul dword[esi+32] fld dword[esi+12] fmul dword[esi+28] fmul dword[esi+8] faddp fld dword[esi+24] fmul dword[esi+4] fmul dword[esi+20] faddp fld dword[esi] fmul dword[esi+28] fmul dword[esi+20] fchs faddp fld dword[esi+24] fmul dword[esi+16] fmul dword[esi+8] fchs faddp fld dword[esi+12] fmul dword[esi+4] fmul dword[esi+32] fchs faddp fstp dword[.det] cmp dword[.det],0 jne @f int3 @@: ; fld1 ; fdiv dword[.det] ; fstp dword[.det] fld dword[esi+16] fmul dword[esi+32] fld dword[esi+20] fmul dword[esi+28] fchs faddp fdiv dword[.det] fstp dword[edi] fld dword[esi+8] fmul dword[esi+28] fld dword[esi+4] fmul dword[esi+32] fchs faddp fdiv dword[.det] fstp dword[edi+4] fld dword[esi+4] fmul dword[esi+20] fld dword[esi+8] fmul dword[esi+16] fchs faddp fdiv dword[.det] fstp dword[edi+8] fld dword[esi+20] fmul dword[esi+24] fld dword[esi+12] fmul dword[esi+32] fchs faddp fdiv dword[.det] fstp dword[edi+12] fld dword[esi] fmul dword[esi+32] fld dword[esi+8] fmul dword[esi+24] fchs faddp fdiv dword[.det] fstp dword[edi+16] fld dword[esi+8] fmul dword[esi+12] fld dword[esi] fmul dword[esi+20] fchs faddp fdiv dword[.det] fstp dword[edi+20] fld dword[esi+12] fmul dword[esi+28] fld dword[esi+16] fmul dword[esi+24] fchs faddp fdiv dword[.det] fstp dword[edi+24] fld dword[esi+4] fmul dword[esi+24] fld dword[esi] fmul dword[esi+28] fchs faddp fdiv dword[.det] fstp dword[edi+28] fld dword[esi] fmul dword[esi+16] fld dword[esi+4] fmul dword[esi+12] fchs faddp fdiv dword[.det] fstp dword[edi+32] mov esp,ebp pop ebp ret ; 3d point - triple integer word coordinate ; vector - triple float dword coordinate ;----------------------in: -------------------------------- ;------------------------ esi - pointer to 1st 3d point --- ;------------------------ edi - pointer to 2nd 3d point --- ;------------------------ ebx - pointer to result vector -- ;---------------------- out : none ------------------------ make_vector_r: if Ext < SSE2 fninit fld dword[edi] ;edi+x3d fsub dword[esi] ;esi+x3d fstp dword[ebx+vec_x] fld dword[edi+4] fsub dword[esi+4] fstp dword[ebx+vec_y] fld dword[edi+8] fsub dword[esi+8] fstp dword[ebx+vec_z] else movups xmm0,[esi] movups xmm1,[edi] subps xmm1,xmm0 movlps [ebx],xmm1 movhlps xmm1,xmm1 movss [ebx+8],xmm1 end if ret ;---------------------- in: ------------------------------- ;--------------------------- esi - pointer to 1st vector -- ;--------------------------- edi - pointer to 2nd vector -- ;--------------------------- ebx - pointer to result vector ;---------------------- out : none cross_product: fninit fld dword [esi+vec_y] fmul dword [edi+vec_z] fld dword [esi+vec_z] fmul dword [edi+vec_y] fsubp ;st1 ,st fstp dword [ebx+vec_x] fld dword [esi+vec_z] fmul dword [edi+vec_x] fld dword [esi+vec_x] fmul dword [edi+vec_z] fsubp ;st1 ,st fstp dword [ebx+vec_y] fld dword [esi+vec_x] fmul dword [edi+vec_y] fld dword [esi+vec_y] fmul dword [edi+vec_x] fsubp ;st1 ,st fstp dword [ebx+vec_z] ret cross_aligned: movaps xmm0,[esi] movaps xmm1,[esi] movaps xmm2,[edi] movaps xmm3,[edi] shufps xmm0,xmm0,00001001b shufps xmm1,xmm1,00010010b shufps xmm2,xmm2,00010010b shufps xmm3,xmm3,00001001b mulps xmm0,xmm2 mulps xmm1,xmm3 subps xmm0,xmm1 movaps [ebx],xmm0 ret ;----------------------- in: ------------------------------ ;---------------------------- edi - pointer to vector ----- ;----------------------- out : none normalize_vector: if Ext >= SSE2 movups xmm0,[edi] andps xmm0,[zero_hgst_dd] movups xmm1,xmm0 mulps xmm0,xmm0 movhlps xmm2,xmm0 addps xmm0,xmm2 movaps xmm2,xmm0 shufps xmm2,xmm2,11100101b addps xmm0,xmm2 shufps xmm0,xmm0,0 ; haddps xmm0,xmm0 ; haddps xmm0,xmm0 rsqrtps xmm0,xmm0 mulps xmm0,xmm1 movlps [edi],xmm0 movhlps xmm0,xmm0 movss [edi+8],xmm0 else fninit fld dword [edi+vec_x] fmul st, st fld dword [edi+vec_y] fmul st, st fld dword [edi+vec_z] fmul st, st faddp st1, st faddp st1, st fsqrt ftst fstsw ax sahf jnz @f fst dword [edi+vec_x] fst dword [edi+vec_y] fstp dword [edi+vec_z] ret @@: fld st fld st fdivr dword [edi+vec_x] fstp dword [edi+vec_x] fdivr dword [edi+vec_y] fstp dword [edi+vec_y] fdivr dword [edi+vec_z] fstp dword [edi+vec_z] end if ret ;------------------in: ------------------------- ;------------------ esi - pointer to 1st vector ;------------------ edi - pointer to 2nd vector ;------------------out: ------------------------ ;------------------ st0 - dot-product dot_product: fninit ;if Ext >=SSE3 ; movups xmm0,[esi] ; movups xmm1,[edi] ; andps xmm0,[zero_hgst_dd] ; mulps xmm0,xmm1 ; haddps xmm0,xmm0 ; haddps xmm0,xmm0 ; movss [esp-4],xmm0 ; fld dword[esp-4] ;else fld dword [esi+vec_x] fmul dword [edi+vec_x] fld dword [esi+vec_y] fmul dword [edi+vec_y] fld dword [esi+vec_z] fmul dword [edi+vec_z] faddp faddp ;end if ret ; DOS version Coded by Mikolaj Felix aka Majuma ; mfelix@polbox.com ; www.majuma.xt.pl ; into FASM translation by Macgub init_sincos_tab: .counter equ dword [ebp-4] ; cur angle push ebp mov ebp,esp xor eax,eax push eax ; init .counter mov edi,cos_tab mov esi,sin_tab mov ecx,256 fninit fld .counter @@: fld st fsincos fstp dword [edi] fstp dword [esi] ; fadd [piD180] fadd [piD128] add esi,4 add edi,4 loop @b ffree st mov esp,ebp pop ebp ret ;------ ; esi - offset (pointer) to angles, edi offset to 3x3 matrix make_rotation_matrix: .sinx equ dword[ebp-4] .cosx equ dword[ebp-8] .siny equ dword[ebp-12] .cosy equ dword[ebp-16] .sinz equ dword[ebp-20] .cosz equ dword[ebp-24] push ebp mov ebp,esp sub esp,24 movzx ebx,word[esi] shl ebx,2 mov eax,dword[sin_tab+ebx] mov .sinx,eax mov edx,dword[cos_tab+ebx] mov .cosx,edx movzx ebx,word[esi+2] shl ebx,2 mov eax,dword[sin_tab+ebx] mov .siny,eax mov edx,dword[cos_tab+ebx] mov .cosy,edx movzx ebx,word[esi+4] shl ebx,2 mov eax,dword[sin_tab+ebx] mov .sinz,eax mov edx,dword[cos_tab+ebx] mov .cosz,edx fninit fld .cosy fmul .cosz fstp dword[edi] fld .sinx fmul .siny fmul .cosz fld .cosx fmul .sinz fchs faddp fstp dword[edi+12] fld .cosx fmul .siny fmul .cosz fld .sinx fmul .sinz faddp fstp dword[edi+24] fld .cosy fmul .sinz fstp dword[edi+4] fld .sinx fmul .siny fmul .sinz fld .cosx fmul .cosz faddp fstp dword[edi+16] fld .cosx fmul .siny fmul .sinz fld .sinx fchs fmul .cosz faddp fstp dword[edi+28] fld .siny fchs fstp dword[edi+8] fld .cosy fmul .sinx fstp dword[edi+20] fld .cosx fmul .cosy fstp dword[edi+32] mov esp,ebp pop ebp ret ;--------------------- ; in: esi - ptr to points(normals], each point(normal) coeficient as dword ; edi - ptr to rotated points(normals) ; ebx - ptr to 3x3 (9 dwords, 36 bytes) rotation matrix ; ecx - number of points(normals) rotary: if Ext