| 13,6 → 13,10 |
|---|
| offs_Z equ 8 |
| offs_W equ 12 |
| |
| if DEBUG |
| f_ttv db ' gl_transform_to_viewport',0 |
| end if |
| |
| align 4 |
| proc gl_transform_to_viewport uses eax ebx ecx, context:dword,v:dword |
| locals |
| 69,8 → 73,8 |
|---|
| .end_if: |
| |
| ; texture |
| bt dword[eax+offs_cont_texture_2d_enabled],0 |
| jnc @f |
| cmp dword[eax+offs_cont_texture_2d_enabled],0 |
| je @f |
| mov dword[point],dword(ZB_POINT_S_MAX - ZB_POINT_S_MIN) |
| fild dword[point] |
| fmul dword[ebx+offs_vert_tex_coord] ;st0 *= v.tex_coord.X |
| 84,7 → 88,7 |
|---|
| add dword[ebx+offs_vert_zp+offs_zbup_s],ZB_POINT_T_MIN |
| @@: |
| if DEBUG ;gl_transform_to_viewport |
| push edi |
| pushad |
| mov ecx,80 |
| mov eax,[ebx+offs_vert_zp] |
| lea edi,[buf_param] |
| 106,7 → 110,7 |
|---|
| |
| stdcall str_n_cat,edi,txt_nl,2 |
| stdcall dbg_print,f_ttv,buf_param |
| pop edi |
| popad |
| end if |
| ret |
| endp |
| 170,11 → 174,11 |
|---|
| fld dword[t] |
| |
| ; интерполяция по координатам |
| fld dword[ecx+offs_vert_pc+offs_X] |
| fsub dword[ebx+offs_vert_pc+offs_X] |
| fld dword[ecx+offs_vert_pc] |
| fsub dword[ebx+offs_vert_pc] |
| fmul st0,st1 |
| fadd dword[ebx+offs_vert_pc+offs_X] |
| fstp dword[eax+offs_vert_pc+offs_X] |
| fadd dword[ebx+offs_vert_pc] |
| fstp dword[eax+offs_vert_pc] ;q.pc.X = p0.pc.X + (p1.pc.X - p0.pc.X) * t |
| |
| fld dword[ecx+offs_vert_pc+offs_Y] |
| fsub dword[ebx+offs_vert_pc+offs_Y] |
| 663,8 → 667,8 |
|---|
| stdcall gl_clipcode, [ebx+offs_vert_pc+offs_X],[ebx+offs_vert_pc+offs_Y],\ |
| [ebx+offs_vert_pc+offs_Z],[ebx+offs_vert_pc+offs_W] |
| mov dword[ebx+offs_vert_clip_code],eax |
| cmp eax,0 ;if (q.clip_code==0) |
| jne @f |
| or eax,eax ;if (q.clip_code==0) |
| jnz @f |
| stdcall gl_transform_to_viewport,[context],ebx |
| mov eax,ebx |
| add eax,offs_vert_zp+offs_zbup_b |
| 689,7 → 693,6 |
|---|
| mov ebx,[p0] |
| mov ecx,[p1] |
| mov edx,[p2] |
| |
| mov edi,[ebx+offs_vert_clip_code] |
| mov dword[cc],edi |
| mov eax,[ecx+offs_vert_clip_code] |
| 700,8 → 703,9 |
|---|
| or edi,eax ;co = cc[0] | cc[1] | cc[2] |
| |
| ; we handle the non clipped case here to go faster |
| cmp edi,0 ;if (co==0) |
| jne .els_0 |
| ;or edi,___ - было выше |
| jnz .els_0 |
| ;if (co==0) |
| mov edi,dword[edx+offs_vert_zp+offs_zbup_x] |
| sub edi,dword[ebx+offs_vert_zp+offs_zbup_x] |
| mov dword[norm],edi |
| 728,13 → 732,12 |
|---|
| fstsw ax |
| sahf |
| je .end_f |
| jb @f |
| jbe @f ;jb @f ??? |
| inc dword[front] ;front = 0.0 > norm |
| @@: |
| mov edi,[context] |
| mov eax,dword[edi+offs_cont_current_front_face] |
| xor dword[front],eax ;front ^= context.current_front_face |
| |
| ; back face culling |
| cmp dword[edi+offs_cont_cull_face_enabled],0 |
| je .els_1 |
| 765,8 → 768,8 |
|---|
| ;eax = cc[2] |
| and eax,[cc] |
| and eax,[cc+4] ;eax = c_and = cc[0] & cc[1] & cc[2] |
| cmp eax,0 ;if (c_and==0) |
| jne .end_f |
| or eax,eax ;if (c_and==0) |
| jnz .end_f |
| stdcall gl_draw_triangle_clip, [context],ebx,ecx,edx,0 |
| .end_f: |
| popad |
| 799,8 → 802,8 |
|---|
| or edi,eax |
| mov [co],edi ;co = cc[0] | cc[1] | cc[2] |
| |
| cmp edi,0 ;if (co == 0) |
| jne .els_0 |
| or edi,edi ;if (co == 0) |
| jnz .els_0 |
| stdcall gl_draw_triangle, [context],ebx,ecx,edx |
| jmp .end_f |
| .els_0: |
| 809,8 → 812,8 |
|---|
| and eax,[cc+4] ;c_and = cc[0] & cc[1] & cc[2] |
| |
| ; the triangle is completely outside |
| cmp eax,0 ;if (c_and!=0) return |
| jne .end_f |
| or eax,eax ;if (c_and!=0) return |
| jnz .end_f |
| |
| ; find the next direction to clip |
| .cycle_0: ;while (clip_bit < 6 && (co & (1 << clip_bit)) == 0) |
| 821,8 → 824,8 |
|---|
| mov ecx,[clip_bit] |
| shl eax,cl |
| and eax,[co] |
| cmp eax,0 |
| jne .cycle_0_end |
| or eax,eax |
| jnz .cycle_0_end |
| inc dword[clip_bit] |
| jmp .cycle_0 |
| .cycle_0_end: |
| 854,13 → 857,13 |
|---|
| |
| mov ecx,[p1] ;востанавливаем после shl ___,cl |
| |
| cmp eax,0 ;if (co1) |
| je .els_1 |
| or eax,eax ;if (co1) |
| jz .els_1 |
| ; one point outside |
| mov eax,[cc] |
| and eax,[clip_mask] |
| cmp eax,0 ;if (cc[0] & clip_mask) |
| je .els_2 |
| or eax,eax ;if (cc[0] & clip_mask) |
| jz .els_2 |
| ;q[0]=p0 q[1]=p1 q[2]=p2 |
| mov [q],ebx |
| mov [q+4],ecx |
| 869,8 → 872,8 |
|---|
| .els_2: |
| mov eax,[cc+4] |
| and eax,[clip_mask] |
| cmp eax,0 ;else if (cc[1] & clip_mask) |
| je .els_3 |
| or eax,eax ;else if (cc[1] & clip_mask) |
| jz .els_3 |
| ;q[0]=p1 q[1]=p2 q[2]=p0 |
| mov [q],ecx |
| mov [q+4],edx |
| 917,7 → 920,7 |
|---|
| stdcall updateTmp,[context],edi,ebx,edx,eax ;updateTmp(c,&tmp2,q[0],q[2],tt) |
| |
| mov eax,[ebx+offs_vert_edge_flag] |
| mov [tmp1+offs_vert_edge_flag],eax ;q[0].edge_flag |
| mov [tmp1.edge_flag],eax ;q[0].edge_flag |
| mov eax,[edx+offs_vert_edge_flag] |
| mov [edge_flag_tmp],eax ;q[2].edge_flag |
| mov dword[edx+offs_vert_edge_flag],0 ;q[2].edge_flag=0 |
| 992,11 → 995,9 |
|---|
| sub edi,offs_vert_pc |
| stdcall updateTmp,[context],edi,[q],[q+8],eax |
| |
| mov edx,[q+8] |
| |
| mov dword[tmp1+offs_vert_edge_flag],1 |
| mov eax,[edx+offs_vert_edge_flag] |
| mov dword[tmp1+offs_vert_edge_flag],eax ;tmp2.edge_flag = q[2].edge_flag |
| mov dword[tmp1.edge_flag],1 |
| mov eax,[edx+offs_vert_edge_flag-offs_vert_pc] |
| mov dword[tmp2.edge_flag],eax ;tmp2.edge_flag = q[2].edge_flag |
| mov eax,[clip_bit] |
| inc eax |
| push eax |