| 0,0 → 1,327 |
|---|
| ROUND2 equ 10 |
| |
| stencil_tri: |
| ; procedure calculate triangle in stencil buffer |
| ; ----------------in - eax - x1 shl 16 + y1 ---------------------- |
| ; -------------------- ebx - x2 shl 16 + y2 ---------------------- |
| ; -------------------- ecx - x3 shl 16 + y3 ---------------------- |
| ; -------------------- esi - pointer to s-buffer ----------------- |
| ; -------------------- xmm0 - lo -> hi z1, z2, z3 as dword float |
| |
| .x1 equ [ebp-2] |
| .y1 equ [ebp-4] |
| .x2 equ [ebp-6] |
| .y2 equ [ebp-8] |
| .x3 equ [ebp-10] |
| .y3 equ [ebp-12] |
| |
| .dx12 equ dword[ebp-20] |
| .dx13 equ dword[ebp-24] |
| .dx23 equ dword[ebp-28] |
| .dz12 equ dword[ebp-32] |
| .dz13 equ dword[ebp-36] |
| .dz23 equ dword[ebp-40] |
| .zz2 equ [ebp-44] |
| .zz1 equ [ebp-48] |
| .z3 equ [ebp-56] |
| .z2 equ [ebp-60] |
| .z1 equ [ebp-64] |
| .s_buff equ [ebp-68] |
| |
| push ebp |
| mov ebp,esp |
| sub esp,128 |
| and ebp,0xfffffff0 |
| .sort2: |
| cmp ax,bx |
| jle .sort1 |
| xchg eax,ebx |
| shufps xmm0,xmm0,11100001b |
| .sort1: |
| cmp bx,cx |
| jle .sort3 |
| xchg ebx,ecx |
| shufps xmm0,xmm0,11011000b |
| jmp .sort2 |
| .sort3: |
| mov .y1,eax ; store triangle coordinates in user friendly variables |
| mov .y2,ebx |
| mov .y3,ecx |
| |
| ; mov edx,100.11 |
| ; movd xmm0,edx |
| ; shufps xmm0,xmm0,11100000b |
| |
| movaps .z1,xmm0 |
| ; mov dword .z1,edx |
| ; mov .z2,edx |
| ; mov .z3,edx |
| mov .s_buff,esi |
| |
| mov edx,80008000h ; eax,ebx,ecx are ANDd together into edx which means that |
| and edx,ebx ; if *all* of them are negative a sign flag is raised |
| and edx,ecx |
| and edx,eax |
| test edx,80008000h ; Check both X&Y at once |
| jne .loop2_end |
| |
| mov bx,.y2 ; calc delta 12 |
| sub bx,.y1 |
| jnz .dx12_make |
| mov .dx12,0 |
| mov .dz12,0 |
| jmp .dx12_done |
| .dx12_make: |
| mov ax,.x2 |
| sub ax,.x1 |
| cwde |
| movsx ebx,bx |
| shl eax,ROUND2 |
| cdq |
| idiv ebx |
| mov .dx12,eax |
| |
| movss xmm1,.z2 |
| cvtsi2ss xmm2,ebx |
| subss xmm1,.z1 |
| divss xmm1,xmm2 |
| movss .dz12,xmm1 |
| ; mov .dz12, dword 0.11 |
| |
| .dx12_done: |
| mov bx,.y3 ; calc delta 13 |
| sub bx,.y1 |
| jnz .dx13_make |
| mov .dx13,0 |
| mov .dz13,0 |
| jmp .dx13_done |
| .dx13_make: |
| mov ax,.x3 |
| sub ax,.x1 |
| cwde |
| movsx ebx,bx |
| shl eax,ROUND2 |
| cdq |
| idiv ebx |
| mov .dx13,eax |
| |
| movss xmm1,.z3 |
| cvtsi2ss xmm2,ebx |
| subss xmm1,.z1 |
| divss xmm1,xmm2 |
| movss .dz13,xmm1 |
| ; mov .dz13, dword 0.11 |
| |
| .dx13_done: |
| mov bx,.y3 ; calc delta 23 |
| sub bx,.y2 |
| jnz .dx23_make |
| mov .dx23,0 |
| mov .dz23,0 |
| jmp .dx23_done |
| .dx23_make: |
| mov ax,.x3 |
| sub ax,.x2 |
| cwde |
| movsx ebx,bx |
| shl eax,ROUND2 |
| cdq |
| idiv ebx |
| mov .dx23,eax |
| |
| movss xmm1,.z3 |
| cvtsi2ss xmm2,ebx |
| subss xmm1,.z2 |
| divss xmm1,xmm2 |
| movss .dz23,xmm1 |
| |
| .dx23_done: |
| mov edx,.z1 |
| |
| mov .zz1,edx |
| mov .zz2,edx |
| movsx eax,word .x1 |
| shl eax,ROUND2 ; eax - cur x1 |
| mov ebx,eax ; ebx - cur x2 |
| |
| mov cx,.y1 |
| cmp cx,.y2 |
| jge .loop1_end |
| .loop1: |
| |
| pushad |
| sar ebx,ROUND2 |
| sar eax,ROUND2 |
| ; movq xmm0,.zz1 |
| movlps xmm0,.zz1 |
| ; mov edx,0.11 |
| ; movd xmm0,edx |
| ; shufps xmm0,xmm0,11100000b |
| mov esi,.s_buff |
| |
| call stencil_line |
| |
| popad |
| add eax,.dx13 |
| add ebx,.dx12 |
| |
| movss xmm1,.zz1 |
| movss xmm2,.zz2 |
| addss xmm1,.dz13 |
| addss xmm2,.dz12 |
| movss .zz1,xmm1 |
| movss .zz2,xmm2 |
| |
| add cx,1 |
| cmp cx,.y2 |
| jl .loop1 |
| |
| .loop1_end: |
| |
| mov edx,.z2 |
| mov .zz2,edx |
| movsx ebx,word .x2 |
| shl ebx,ROUND2 |
| |
| mov cx,.y2 |
| cmp cx,.y3 |
| jge .loop2_end |
| .loop2: |
| pushad |
| |
| sar ebx,ROUND2 |
| sar eax,ROUND2 |
| movlps xmm0,.zz1 |
| mov esi,.s_buff |
| |
| |
| call stencil_line |
| |
| popad |
| |
| add eax,.dx13 |
| add ebx,.dx23 |
| |
| movss xmm1,.zz1 |
| movss xmm2,.zz2 |
| addss xmm1,.dz13 |
| addss xmm2,.dz23 |
| movss .zz1,xmm1 |
| movss .zz2,xmm2 |
| |
| |
| add cx,1 |
| cmp cx,.y3 |
| jl .loop2 |
| .loop2_end: |
| |
| add esp,128 |
| pop ebp |
| |
| ret |
| |
| stencil_line: |
| ;---------------------------------------------------- |
| ;-------------in xmm0 - lo -> hi z1, z2 |
| ;--------------- eax - x1 --------------------------- |
| ;--------------- ebx - x2 --------------------------- |
| ;--------------- ecx - y----------------------------- |
| ;--------------- esi - pointer to s-buffer |
| |
| |
| .dz equ [ebp-4] |
| .z2 equ [ebp-8] |
| .z1 equ [ebp-12] |
| .x2 equ [ebp-16] |
| .x1 equ [ebp-20] |
| .s_buf equ [ebp-24] |
| ; cmp eax,ebx |
| ; je @f |
| ; int3 |
| ; @@: |
| push ebp |
| mov ebp,esp |
| sub esp,64 |
| ; cmp eax,0 |
| ; jg @f |
| ; |
| ; @@: |
| or cx,cx |
| jle .l_quit |
| |
| cmp cx,[size_y_var] |
| jge .l_quit |
| |
| movzx ecx,cx |
| mov .s_buf,esi |
| cmp eax,ebx |
| je .l_quit |
| jl .l_ok |
| |
| xchg eax,ebx |
| shufps xmm0,xmm0,11100001b |
| .l_ok: |
| |
| cmp ax,[size_x_var] |
| jge .l_quit |
| cmp bx,0 |
| jle .l_quit |
| |
| movlps .z1,xmm0 |
| mov .x1,eax |
| mov .x2,ebx |
| |
| sub ebx,eax |
| movss xmm0,.z2 |
| cvtsi2ss xmm1,ebx |
| subss xmm0,.z1 |
| divss xmm0,xmm1 |
| movss .dz,xmm0 |
| |
| movzx edx,word[size_x_var] |
| cmp eax,1 |
| jge @f |
| mov eax,.x1 |
| neg eax |
| cvtsi2ss xmm2,eax |
| mulss xmm2,.dz |
| addss xmm2,.z1 |
| movss .z1,xmm2 |
| mov dword .x1,0 |
| movzx edx,word[size_x_var] |
| sub edx,1 |
| @@: |
| cmp .x2,edx |
| jl @f |
| mov .x2,edx |
| |
| @@: |
| ; mov eax,.x1 |
| ; cmp .x2,eax |
| ; je .l_quit |
| movzx edx,word[size_x_var] |
| mov esi,.s_buf |
| mov eax,ecx ; y |
| mul edx |
| add eax,.x1 |
| |
| shl eax,2 |
| add esi,eax |
| |
| mov ecx,.x2 |
| sub ecx,.x1 |
| movss xmm2,.z1 ; cz |
| .ccalc: |
| ; movss xmm1,xmm2 |
| comiss xmm2,dword[esi] |
| jg @f |
| movss dword[esi],xmm2 |
| @@: |
| add esi,4 |
| addss xmm2,.dz |
| sub ecx,1 |
| jnz .ccalc |
| .l_quit: |
| mov esp,ebp |
| pop ebp |
| ret |
| Property changes: |
|---|
| Added: svn:eol-style |
|---|
| +native |
|---|
| \ No newline at end of property |
|---|