| 0,0 → 1,651 |
|---|
| |
| align 4 |
| proc glopNormal uses ecx esi edi, context:dword, p:dword |
| mov esi,[p] |
| add esi,4 |
| mov edi,[context] |
| add edi,offs_cont_current_normal |
| mov ecx,4 |
| rep movsd |
| mov dword[esi],0.0 ;context.current_normal.W = 0.0 |
| ret |
| endp |
| |
| align 4 |
| proc glopTexCoord uses ecx esi edi, context:dword, p:dword |
| mov esi,[p] |
| add esi,4 |
| mov edi,[context] |
| add edi,offs_cont_current_tex_coord |
| mov ecx,4 |
| rep movsd |
| ret |
| endp |
| |
| align 4 |
| proc glopEdgeFlag uses eax ebx, context:dword, p:dword |
| mov eax,[context] |
| mov ebx,[p] |
| mov ebx,[ebx+4] ;ebx = p[1] |
| mov dword[eax+offs_cont_current_edge_flag],ebx |
| ret |
| endp |
| |
| align 4 |
| proc glopColor uses eax ecx esi edi, context:dword, p:dword |
| locals |
| q rd 7 |
| endl |
| ;current_color[3] = p[1-4] |
| ;longcurrent_color[2] = p[5-7] |
| mov esi,[p] |
| add esi,4 |
| mov edi,[context] |
| add edi,offs_cont_current_color |
| mov ecx,7 |
| rep movsd |
| |
| mov eax,[context] |
| cmp dword[eax+offs_cont_color_material_enabled],1 |
| jne @f |
| mov dword[q],OP_Material |
| mov ecx,[eax+offs_cont_current_color_material_mode] |
| mov dword[q+4],ecx |
| mov ecx,[eax+offs_cont_current_color_material_type] |
| mov dword[q+8],ecx |
| mov esi,[p] |
| add esi,4 |
| mov edi,dword[q+12] ;edi = [q3] |
| mov ecx,4 |
| rep movsd |
| stdcall glopMaterial, eax,[q] |
| @@: |
| ret |
| endp |
| |
| align 4 |
| proc gl_eval_viewport uses eax, context:dword |
| locals |
| zsize dd ? ;float |
| endl |
| mov eax,[context] |
| add eax,offs_cont_viewport ;eax = (GLViewport*) v |
| |
| mov dword[zsize],(1 shl (ZB_Z_BITS + ZB_POINT_Z_FRAC_BITS)) |
| fild dword[zsize] |
| fstp dword[zsize] |
| |
| fld1 |
| fld1 |
| fadd st1,st0 ;st1 = 2.0 |
| fdiv st0,st1 ;st0 = 0.5 |
| |
| fild dword[eax+offs_vpor_xsize] |
| fsub st0,st1 |
| fdiv st0,st2 |
| fst dword[eax+offs_vpor_scale+offs_X] |
| fiadd dword[eax+offs_vpor_xmin] |
| fstp dword[eax+offs_vpor_trans+offs_X] |
| |
| fild dword[eax+offs_vpor_ysize] |
| fsub st0,st1 |
| fdiv st0,st2 |
| fchs |
| fst dword[eax+offs_vpor_scale+offs_Y] |
| fchs |
| fiadd dword[eax+offs_vpor_ymin] |
| fstp dword[eax+offs_vpor_trans+offs_Y] |
| |
| fld dword[zsize] |
| fsub st0,st1 |
| fdiv st0,st2 |
| fchs |
| fst dword[eax+offs_vpor_scale+offs_Z] |
| fchs |
| mov dword[zsize],(1 shl ZB_POINT_Z_FRAC_BITS) / 2 |
| fiadd dword[zsize] |
| fstp dword[eax+offs_vpor_trans+offs_Z] |
| if DEBUG ;gl_eval_viewport |
| stdcall dbg_print,f_ev,txt_nl |
| add eax,offs_vpor_scale |
| stdcall gl_print_matrix,eax,1 |
| add eax,8 |
| stdcall gl_print_matrix,eax,1 |
| end if |
| ret |
| endp |
| |
| |
| align 4 |
| proc glopBegin uses eax ebx ecx edx, context:dword, p:dword |
| locals |
| tmp M4 |
| endl |
| ; assert(c->in_begin == 0); |
| |
| mov edx,[context] |
| mov ebx,[p] |
| mov ebx,[ebx+4] ;ebx = p[1] |
| mov [edx+offs_cont_begin_type],ebx |
| mov dword[edx+offs_cont_in_begin],1 |
| mov dword[edx+offs_cont_vertex_n],0 |
| mov dword[edx+offs_cont_vertex_cnt],0 |
| |
| bt dword[edx+offs_cont_matrix_model_projection_updated],0 |
| jnc .end_mmpu |
| |
| cmp dword[edx+offs_cont_lighting_enabled],0 ;if(context.lighting_enabled) |
| je @f |
| ; precompute inverse modelview |
| mov ebx,ebp |
| sub ebx,64 |
| stdcall gl_M4_Inv, ebx, edx+offs_cont_matrix_stack_ptr |
| stdcall gl_M4_Transpose, edx+offs_cont_matrix_model_view_inv, ebx |
| jmp .end_if_0 |
| @@: |
| mov ecx,edx |
| add ecx,offs_cont_matrix_model_projection |
| ; precompute projection matrix |
| stdcall gl_M4_Mul, ecx,dword[edx+offs_cont_matrix_stack_ptr+4],dword[edx+offs_cont_matrix_stack_ptr] |
| ;if DEBUG ;glopBegin |
| ;stdcall gl_print_matrix,ecx,4 |
| ;stdcall gl_print_matrix,[edx+offs_cont_matrix_stack_ptr+4],4 |
| ;stdcall gl_print_matrix,[edx+offs_cont_matrix_stack_ptr],4 |
| ;end if |
| ; test to accelerate computation |
| mov dword[edx+offs_cont_matrix_model_projection_no_w_transform],0 |
| fldz |
| fld dword[ecx+12*4] |
| fcomp st1 |
| fstsw ax |
| sahf |
| jne .end_if_0 |
| fld dword[ecx+13*4] |
| fcomp st1 |
| fstsw ax |
| sahf |
| jne .end_if_0 |
| fld dword[ecx+14*4] |
| fcomp st1 |
| fstsw ax |
| sahf |
| jne .end_if_0 |
| mov dword[edx+offs_cont_matrix_model_projection_no_w_transform],1 |
| .end_if_0: |
| |
| ; test if the texture matrix is not Identity |
| stdcall gl_M4_IsId,edx+offs_cont_matrix_stack_ptr+8 |
| xor edx,1 |
| mov ebx,[context] |
| mov dword[ebx+offs_cont_apply_texture_matrix],edx |
| |
| mov edx,[context] |
| mov dword[edx+offs_cont_matrix_model_projection_updated],0 |
| .end_mmpu: |
| |
| ; viewport |
| cmp dword[edx+offs_cont_viewport+offs_vpor_updated],0 ;if (context.viewport.updated) |
| je @f |
| stdcall gl_eval_viewport,edx |
| mov dword[edx+offs_cont_viewport+offs_vpor_updated],0 |
| @@: |
| ; triangle drawing functions |
| cmp dword[edx+offs_cont_render_mode],GL_SELECT |
| jne @f |
| mov dword[edx+offs_cont_draw_triangle_front],gl_draw_triangle_select |
| mov dword[edx+offs_cont_draw_triangle_back],gl_draw_triangle_select |
| jmp .end_if_2 |
| @@: |
| |
| cmp dword[edx+offs_cont_polygon_mode_front],GL_POINT |
| jne @f |
| mov dword[edx+offs_cont_draw_triangle_front],gl_draw_triangle_point |
| jmp .end_if_1 |
| @@: |
| cmp dword[edx+offs_cont_polygon_mode_front],GL_LINE |
| jne @f |
| mov dword[edx+offs_cont_draw_triangle_front],gl_draw_triangle_line |
| jmp .end_if_1 |
| @@: ;default: |
| mov dword[edx+offs_cont_draw_triangle_front],gl_draw_triangle_fill |
| .end_if_1: |
| |
| cmp dword[edx+offs_cont_polygon_mode_back],GL_POINT |
| jne @f |
| mov dword[edx+offs_cont_draw_triangle_back],gl_draw_triangle_point |
| jmp .end_if_2 |
| @@: |
| cmp dword[edx+offs_cont_polygon_mode_back],GL_LINE |
| jne @f |
| mov dword[edx+offs_cont_draw_triangle_back],gl_draw_triangle_line |
| jmp .end_if_2 |
| @@: ;default: |
| mov dword[edx+offs_cont_draw_triangle_back],gl_draw_triangle_fill |
| .end_if_2: |
| ret |
| endp |
| |
| ; coords, tranformation , clip code and projection |
| ; TODO : handle all cases |
| align 4 |
| proc gl_vertex_transform, context:dword, v:dword |
| pushad |
| mov eax,[context] |
| mov edx,[v] |
| cmp dword[eax+offs_cont_lighting_enabled],0 ;if (context.lighting_enabled) |
| je .els_0 |
| ; eye coordinates needed for lighting |
| mov ebx,dword[eax+offs_cont_matrix_stack_ptr] |
| ;;;mov edx,[v] |
| finit |
| fld dword[edx+offs_vert_coord+offs_X] |
| fld dword[edx+offs_vert_coord+offs_Y] |
| fld dword[edx+offs_vert_coord+offs_Z] |
| |
| mov ecx,4 |
| .cycle_0: |
| fld dword[ebx] ;st0 = m[0] |
| fmul st0,st3 ;st0 *= v.coord.X |
| fld dword[ebx+4] ;st0 = m[1] |
| fmul st0,st3 ;st0 *= v.coord.Y |
| fld dword[ebx+8] ;st0 = m[2] |
| fmul st0,st3 ;st0 *= v.coord.Z |
| fadd dword[ebx+12] ;st0 += m[3] |
| fadd st0,st1 ;st0 += v.coord.Z * m[2] |
| fadd st0,st2 ;st0 += v.coord.Y * m[1] |
| fstp dword[edx+offs_vert_ec] ;v.ec.X = v.coord.X * m[0] + v.coord.Y * m[1] + v.coord.Z * m[2] + m[3] |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| add ebx,16 ;следущая строка матрицы |
| add edx,4 ;следущая координата вектора |
| loop .cycle_0 |
| |
| ; projection coordinates |
| mov ebx,dword[eax+offs_cont_matrix_stack_ptr+4] |
| mov edx,[v] |
| finit |
| fld dword[edx+offs_vert_ec+offs_X] |
| fld dword[edx+offs_vert_ec+offs_Y] |
| fld dword[edx+offs_vert_ec+offs_Z] |
| |
| mov ecx,4 |
| .cycle_1: |
| fld dword[ebx] ;st0 = m[0] |
| fmul st0,st3 ;st0 *= v.ec.X |
| fld dword[ebx+4] ;st0 = m[1] |
| fmul st0,st3 ;st0 *= v.ec.Y |
| fld dword[ebx+8] ;st0 = m[2] |
| fmul st0,st3 ;st0 *= v.ec.Z |
| fadd dword[ebx+12] ;st0 += m[3] |
| fadd st0,st1 ;st0 += v.ec.Z * m[2] |
| fadd st0,st2 ;st0 += v.ec.Y * m[1] |
| fstp dword[edx+offs_vert_pc] ;v.pc.X = v.ec.X * m[0] + v.ec.Y * m[1] + v.ec.Z * m[2] + m[3] |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| add ebx,16 ;следущая строка матрицы |
| add edx,4 ;следущая координата вектора |
| loop .cycle_1 |
| |
| mov ebx,eax |
| add ebx,offs_cont_matrix_model_view_inv |
| mov edi,eax |
| add edi,offs_cont_current_normal |
| mov edx,[v] |
| finit |
| fld dword[edi+offs_X] |
| fld dword[edi+offs_Y] |
| fld dword[edi+offs_Z] |
| |
| mov ecx,3 |
| .cycle_2: |
| fld dword[ebx] ;st0 = m[0] |
| fmul st0,st3 ;st0 *= n.X |
| fld dword[ebx+4] ;st0 = m[1] |
| fmul st0,st3 ;st0 *= n.Y |
| fld dword[ebx+8] ;st0 = m[2] |
| fmul st0,st3 ;st0 *= n.Z |
| fadd st0,st1 ;st0 += n.Z * m[2] |
| fadd st0,st2 ;st0 += n.Y * m[1] |
| fstp dword[edx+offs_vert_normal] ;v.normal.X = n.X * m[0] + n.Y * m[1] + n.Z * m[2] |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| add ebx,16 ;следущая строка матрицы |
| add edx,4 ;следущая координата вектора |
| loop .cycle_2 |
| |
| cmp dword[eax+offs_cont_normalize_enabled],0 |
| je .end_els |
| ;stdcall gl_V3_Norm(&v->normal) |
| jmp .end_els |
| .els_0: |
| ; no eye coordinates needed, no normal |
| ; NOTE: W = 1 is assumed |
| mov ebx,eax |
| add ebx,offs_cont_matrix_model_projection |
| |
| ;;;mov edx,[v] |
| finit |
| fld dword[edx+offs_vert_coord+offs_X] |
| fld dword[edx+offs_vert_coord+offs_Y] |
| fld dword[edx+offs_vert_coord+offs_Z] |
| |
| mov esi,edx |
| add esi,offs_vert_pc |
| |
| fld dword[ebx] ;st0 = m[0] |
| fmul st0,st3 ;st0 *= v.coord.X |
| fld dword[ebx+4] ;st0 = m[1] |
| fmul st0,st3 ;st0 *= v.coord.Y |
| fld dword[ebx+8] ;st0 = m[2] |
| fmul st0,st3 ;st0 *= v.coord.Z |
| fadd dword[ebx+12] ;st0 += m[3] |
| fadd st0,st1 ;st0 += v.coord.Z * m[2] |
| fadd st0,st2 ;st0 += v.coord.Y * m[1] |
| fstp dword[esi] ;v.pc.X = v.coord.X * m[0] + v.coord.Y * m[1] + v.coord.Z * m[2] + m[3] |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| fld dword[ebx+16] ;st0 = m[4] |
| fmul st0,st3 ;st0 *= v.coord.X |
| fld dword[ebx+20] ;st0 = m[5] |
| fmul st0,st3 ;st0 *= v.coord.Y |
| fld dword[ebx+24] ;st0 = m[6] |
| fmul st0,st3 ;st0 *= v.coord.Z |
| fadd dword[ebx+28] ;st0 += m[7] |
| fadd st0,st1 ;st0 += v.coord.Z * m[6] |
| fadd st0,st2 ;st0 += v.coord.Y * m[5] |
| fstp dword[esi+4] ;v.pc.X = v.coord.X * m[4] + v.coord.Y * m[5] + v.coord.Z * m[6] + m[7] |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| fld dword[ebx+32] ;st0 = m[8] |
| fmul st0,st3 ;st0 *= v.coord.X |
| fld dword[ebx+36] ;st0 = m[9] |
| fmul st0,st3 ;st0 *= v.coord.Y |
| fld dword[ebx+40] ;st0 = m[10] |
| fmul st0,st3 ;st0 *= v.coord.Z |
| fadd dword[ebx+44] ;st0 += m[11] |
| fadd st0,st1 ;st0 += v.coord.Z * m[10] |
| fadd st0,st2 ;st0 += v.coord.Y * m[9] |
| fstp dword[esi+8] ;v.pc.X = v.coord.X * m[8] + v.coord.Y * m[9] + v.coord.Z * m[10] + m[11] |
| |
| cmp dword[eax+offs_cont_matrix_model_projection_no_w_transform],0 |
| je .els_1 |
| ;if (context.matrix_model_projection_no_w_transform) |
| mov ebx,dword[ebx+60] ;ebx = m[15] |
| mov dword[esi+12],ebx ;v.pc.W = m[15] |
| jmp .end_els |
| .els_1: |
| ffree st0 |
| fincstp |
| ffree st0 |
| fincstp |
| fld dword[ebx+48] ;st0 = m[12] |
| fmul st0,st3 ;st0 *= v.coord.X |
| fld dword[ebx+52] ;st0 = m[13] |
| fmul st0,st3 ;st0 *= v.coord.Y |
| fld dword[ebx+56] ;st0 = m[14] |
| fmul st0,st3 ;st0 *= v.coord.Z |
| fadd dword[ebx+60] ;st0 += m[15] |
| fadd st0,st1 ;st0 += v.coord.Z * m[14] |
| fadd st0,st2 ;st0 += v.coord.Y * m[13] |
| fstp dword[esi+12] ;v.pc.W = v.coord.X * m[12] + v.coord.Y * m[13] + v.coord.Z * m[14] + m[15] |
| .end_els: |
| if DEBUG ;gl_vertex_transform |
| stdcall dbg_print,f_vt,txt_nl |
| mov edx,[v] |
| add edx,offs_vert_pc |
| stdcall gl_print_matrix,edx,1 |
| end if |
| mov edx,[v] |
| stdcall gl_clipcode, dword[edx+offs_vert_pc+offs_X], dword[edx+offs_vert_pc+offs_Y],\ |
| dword[edx+offs_vert_pc+offs_Z], dword[edx+offs_vert_pc+offs_W] |
| mov dword[edx+offs_vert_clip_code],eax |
| popad |
| ret |
| endp |
| |
| align 4 |
| proc glopVertex, context:dword, p:dword |
| locals |
| ;ebx = GLVertex * v |
| n dd ? ;ebp-4 |
| endl |
| pushad |
| mov edx,[context] |
| |
| ; assert(c->in_begin != 0); |
| |
| mov ecx,[edx+offs_cont_vertex_n] |
| mov [n],ecx |
| inc dword[edx+offs_cont_vertex_cnt] |
| |
| ; quick fix to avoid crashes on large polygons |
| mov ecx,[edx+offs_cont_vertex_max] |
| cmp dword[n],ecx |
| jl @f |
| shl dword[edx+offs_cont_vertex_max],1 ; just double size |
| imul ecx,2*sizeof.GLVertex |
| stdcall gl_malloc,ecx |
| cmp eax,0 |
| jne .no_err |
| ;gl_fatal_error("unable to allocate GLVertex array.\n"); |
| .no_err: |
| mov edi,eax |
| mov ebx,eax |
| mov esi,[edx+offs_cont_vertex] |
| mov ecx,[n] |
| imul ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb |
| rep movsd |
| stdcall gl_free,dword[edx+offs_cont_vertex] |
| mov dword[edx+offs_cont_vertex],ebx |
| @@: |
| ; new vertex entry |
| mov ebx,[n] |
| imul ebx,sizeof.GLVertex |
| add ebx,[edx+offs_cont_vertex] |
| inc dword[n] |
| |
| mov esi,[p] |
| add esi,4 |
| mov edi,ebx |
| add edi,offs_vert_coord ;edi = &v.coord |
| mov ecx,4 |
| rep movsd |
| |
| stdcall gl_vertex_transform, edx, ebx |
| |
| ; color |
| |
| cmp dword[edx+offs_cont_lighting_enabled],0 |
| je .els_0 |
| stdcall gl_shade_vertex, edx,ebx |
| jmp @f |
| .els_0: |
| mov eax,[edx+offs_cont_current_color] |
| mov [ebx+offs_vert_color],eax |
| @@: |
| |
| ; tex coords |
| cmp dword[edx+offs_cont_texture_2d_enabled],0 |
| je @f |
| cmp dword[edx+offs_cont_apply_texture_matrix],0 |
| je .els_1 |
| ; gl_M4_MulV4(&v->tex_coord, c->matrix_stack_ptr[2], &c->current_tex_coord); |
| jmp @f |
| .els_1: |
| mov eax,[edx+offs_cont_current_tex_coord] |
| mov [ebx+offs_vert_tex_coord],eax |
| @@: |
| |
| ; precompute the mapping to the viewport |
| cmp dword[ebx+offs_vert_clip_code],0 |
| jne @f |
| stdcall gl_transform_to_viewport, edx,ebx |
| @@: |
| |
| ; edge flag |
| mov eax,[edx+offs_cont_current_edge_flag] |
| mov dword[ebx+offs_vert_edge_flag],eax ;v.edge_flag = context.current_edge_flag |
| |
| cmp dword[edx+offs_cont_begin_type],GL_POINTS |
| jne @f |
| stdcall gl_draw_point, edx, dword[edx+offs_cont_vertex] ;dword[edx+...] = &context.vertex[0] |
| mov dword[n],0 |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_LINES |
| jne @f |
| cmp dword[n],2 |
| jne .end_f |
| mov eax,[edx+offs_cont_vertex] |
| push eax |
| add eax,sizeof.GLVertex |
| push eax |
| stdcall gl_draw_line, edx |
| xor eax,eax |
| mov dword[n],eax |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_LINE_STRIP |
| je .li_loop |
| cmp dword[edx+offs_cont_begin_type],GL_LINE_LOOP |
| jne @f |
| .li_loop: |
| cmp dword[n],1 |
| jne .els_2 |
| mov esi,[edx+offs_cont_vertex] |
| mov edi,esi |
| add edi,2*sizeof.GLVertex |
| mov ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb |
| rep movsd ;context.vertex[2] = context.vertex[0] |
| jmp .end_f |
| .els_2: |
| cmp dword[n],2 |
| jne .end_f ;else if (n == 2) |
| mov eax,[edx+offs_cont_vertex] |
| push eax |
| add eax,sizeof.GLVertex |
| push eax |
| stdcall gl_draw_line, edx |
| mov edi,[edx+offs_cont_vertex] |
| mov esi,edi |
| add esi,sizeof.GLVertex |
| mov ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb |
| rep movsd ;context.vertex[0] = context.vertex[1] |
| mov dword[n],1 |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_TRIANGLES |
| jne @f |
| cmp dword[n],3 |
| jne .end_f |
| ; gl_draw_triangle(c, &c->vertex[0], &c->vertex[1], &c->vertex[2]); |
| xor eax,eax |
| mov dword[n],eax |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_TRIANGLE_STRIP |
| jne @f |
| ; if (c->vertex_cnt >= 3) { |
| ; if (n == 3) |
| ; n = 0; |
| ; /* needed to respect triangle orientation */ |
| ; switch(c->vertex_cnt & 1) { |
| ; case 0: |
| ; gl_draw_triangle(c,&c->vertex[2],&c->vertex[1],&c->vertex[0]); |
| ; break; |
| ; default: |
| ; case 1: |
| ; gl_draw_triangle(c,&c->vertex[0],&c->vertex[1],&c->vertex[2]); |
| ; break; |
| ; } |
| ; } |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_TRIANGLE_FAN |
| jne @f |
| cmp dword[n],2 |
| jne .end_f |
| ; gl_draw_triangle(c, &c->vertex[0], &c->vertex[1], &c->vertex[2]); |
| ; c->vertex[1] = c->vertex[2]; |
| mov dword[n],2 |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_QUADS |
| jne @f |
| cmp dword[n],4 |
| jne .end_f |
| ; c->vertex[2].edge_flag = 0; |
| ; gl_draw_triangle(c, &c->vertex[0], &c->vertex[1], &c->vertex[2]); |
| ; c->vertex[2].edge_flag = 1; |
| ; c->vertex[0].edge_flag = 0; |
| ; gl_draw_triangle(c, &c->vertex[0], &c->vertex[2], &c->vertex[3]); |
| xor eax,eax |
| mov dword[n],eax |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_QUAD_STRIP |
| jne @f |
| cmp dword[n],2 |
| jne .end_f |
| ; gl_draw_triangle(c, &c->vertex[0], &c->vertex[1], &c->vertex[2]); |
| ; gl_draw_triangle(c, &c->vertex[1], &c->vertex[3], &c->vertex[2]); |
| ; for (i = 0; i < 2; i++) |
| ; c->vertex[i] = c->vertex[i + 2]; |
| mov dword[n],2 |
| jmp .end_f |
| @@: |
| cmp dword[edx+offs_cont_begin_type],GL_POLYGON |
| jne @f |
| ;... |
| jmp .end_f |
| @@: |
| ; default: |
| ; gl_fatal_error("glBegin: type %x not handled\n", c->begin_type); |
| ; } |
| .end_f: |
| |
| mov ecx,[n] |
| mov [edx+offs_cont_vertex_n],ecx |
| popad |
| ret |
| endp |
| |
| align 4 |
| proc glopEnd uses eax ebx, context:dword, p:dword |
| mov eax,[context] |
| ; assert(c->in_begin == 1); |
| |
| cmp dword[eax+offs_cont_begin_type],GL_LINE_LOOP |
| jne .else_i |
| cmp dword[eax+offs_cont_vertex_cnt],3 |
| jl .end_i |
| mov ebx,[eax+offs_cont_vertex] |
| push ebx |
| add ebx,2*sizeof.GLVertex |
| push ebx |
| stdcall gl_draw_line, eax |
| jmp .end_i |
| .else_i: |
| cmp dword[eax+offs_cont_begin_type],GL_POLYGON |
| jne .end_i |
| mov ebx,dword[eax+offs_cont_vertex_cnt] |
| @@: ;while (ebx >= 3) |
| cmp ebx,3 |
| jl .end_i |
| dec ebx |
| ; gl_draw_triangle(c, &c->vertex[i], &c->vertex[0], &c->vertex[i - 1]); |
| jmp @b |
| .end_i: |
| mov dword[eax+offs_cont_in_begin],0 |
| ret |
| endp |