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Rev 2984 Rev 6619
Line 39... Line 39...
39 
.screen 	equ ebp-52
 39 
.screen 	equ ebp-52
40 
.zbuffer	equ ebp-56
 40 
.zbuffer	equ ebp-56
41 
.ccoord 	equ ebp-60  ;current coordinate
 41 
.ccoord 	equ ebp-60  ;current coordinate
42 
.czbuf		equ ebp-64
 42 
.czbuf		equ ebp-64
43 
.cscr		equ ebp-68
 43 
.cscr		equ ebp-68
- 
 
 44 
.xres		equ ebp-72
- 
 
 45 
.yres		equ ebp-76
- 
 
 46 
.xresm1 	equ ebp-80
- 
 
 47 
.yresm1 	equ ebp-84
- 
 
 48 
.xresp1 	equ ebp-88
44 
;.lasty          equ ebp-72
 49 
.yresp1 	equ ebp-92
- 
 
 50 
.xres3		equ ebp-96
- 
 
 51 
.xres4		equ ebp-100
- 
 
 52 
 
45 
macro .update_cur_var
 53 
macro .update_cur_var
46 
{
 54 
{
47 
if Ext=NON
 55 
if Ext=NON
48 
     mov	 ebx,[.dz]
 56 
     mov	 ebx,[.dz]
49 
     add	 [.cz],ebx
 57 
     add	 [.cz],ebx
Line 124... Line 132...
124 
    mov 	eax,[.x1]      ; check if parameters exceedes screen area
 132 
    mov 	eax,[.x1]      ; check if parameters exceedes screen area
125 
    mov 	ebx,[.x2]
 133 
    mov 	ebx,[.x2]
126 
    or		eax,ebx
 134 
    or		eax,ebx
127 
    test	eax,80008000h
 135 
    test	eax,80008000h
128 
    jne 	.end_line
 136 
    jne 	.end_line
- 
 
 137 
    movzx	edx,word [size_x_var]
- 
 
 138 
    mov 	[.xres],edx
- 
 
 139 
    movzx	ecx,word [size_y_var]
- 
 
 140 
    mov 	[.yres],ecx
129 
    cmp 	word[.x1],SIZE_X
 141 
    cmp 	word[.x1],dx  ;SIZE_X
130 
    jg		.end_line
 142 
    jg		.end_line
131 
    cmp 	word[.x2],SIZE_X
 143 
    cmp 	word[.x2],dx  ;SIZE_X
132 
    jg		.end_line
 144 
    jg		.end_line
133 
    cmp 	word[.y1],SIZE_Y
 145 
    cmp 	word[.y1],cx  ;SIZE_Y
134 
    jg		.end_line
 146 
    jg		.end_line
135 
    cmp 	word[.y2],SIZE_Y
 147 
    cmp 	word[.y2],cx  ;SIZE_Y
136 
    jg		.end_line
 148 
    jg		.end_line
Line -... Line 149...
- 
 
 149 
 
- 
 
 150 
    mov 	edx,[.xres]
- 
 
 151 
    shl 	edx,2
- 
 
 152 
    mov 	[.xres4],edx
- 
 
 153 
    shr 	edx,2
- 
 
 154 
    lea 	edx,[edx*3]
- 
 
 155 
    mov 	[.xres3],edx
- 
 
 156 
    mov 	edx,[.xres]
- 
 
 157 
    mov 	ecx,[.yres]
- 
 
 158 
    dec 	edx
- 
 
 159 
    dec 	ecx
- 
 
 160 
    mov 	[.xresm1],edx
- 
 
 161 
    mov 	[.yresm1],ecx
- 
 
 162 
    add 	edx,2
- 
 
 163 
    add 	ecx,2
- 
 
 164 
    mov 	[.xresp1],edx
Line 137... Line 165...
137 
 
 165 
    mov 	[.yresp1],ecx
138 
 
 166 
 
139 
    mov 	[.screen],edi
 167 
    mov 	[.screen],edi
140 
    mov 	cx,[.x1]
 168 
    mov 	cx,[.x1]
Line 179... Line 207...
179 
    je		.end_line
 207 
    je		.end_line
180 
    mov 	[.delta_x],ebx
 208 
    mov 	[.delta_x],ebx
Line 181... Line 209...
181 
 
 209 
 
Line 182... Line 210...
182 
    call	.calc_delta
 210 
    call	.calc_delta
183 
 
 211 
 
184 
    mov 	eax,SIZE_X
 212 
    movzx	eax,word [size_x_var]  ;SIZE_X
185 
    movsx	ebx,word[.y1]
 213 
    movsx	ebx,word[.y1]
186 
    mul 	ebx
 214 
    mul 	ebx
187 
    add 	esi,eax
 215 
    add 	esi,eax
Line 245... Line 273...
245 
    je		.end_line
 273 
    je		.end_line
246 
    mov 	[.delta_y],ebx
 274 
    mov 	[.delta_y],ebx
Line 247... Line 275...
247 
 
 275 
 
Line 248... Line 276...
248 
    call	.calc_delta
 276 
    call	.calc_delta
249 
 
 277 
 
250 
    mov 	eax,SIZE_X
 278 
    movzx	eax,word[size_x_var]  ;SIZE_X
251 
    movsx	ebx,word[.y1]
 279 
    movsx	ebx,word[.y1]
252 
    mul 	ebx
 280 
    mul 	ebx
253 
    add 	esi,eax
 281 
    add 	esi,eax
Line 288... Line 316...
288 
    jle 	@f
 316 
    jle 	@f
Line 289... Line 317...
289 
 
 317 
 
Line 290... Line 318...
290 
    .draw_pixel
 318 
    .draw_pixel
291 
 
 319 
 
292 
@@:
 320 
@@:
Line 293... Line 321...
293 
    add 	edi,SIZE_X*3
 321 
    add 	edi,[.xres3]
Line 294... Line 322...
294 
    add 	esi,SIZE_X*4
 322 
    add 	esi,[.xres4]
295 
 
 323 
 
Line 316... Line 344...
316 
    movsx	ebx,bx
 344 
    movsx	ebx,bx
317 
    mov 	[.delta_x],ebx
 345 
    mov 	[.delta_x],ebx
Line 318... Line 346...
318 
 
 346 
 
Line 319... Line 347...
319 
    call	.calc_delta
 347 
    call	.calc_delta
320 
 
 348 
 
321 
    mov 	eax,SIZE_X
 349 
    mov 	eax,[.xres]
322 
    movsx	ebx,word[.y1] ;calc begin values in screen and Z buffers
 350 
    movsx	ebx,word[.y1] ;calc begin values in screen and Z buffers
323 
    mul 	ebx
 351 
    mul 	ebx
324 
    lea 	ebx,[3*eax]
 352 
    lea 	ebx,[3*eax]
Line 357... Line 385...
357 
    .draw_pixel
 385 
    .draw_pixel
Line 358... Line 386...
358 
 
 386 
 
359 
@@:
 387 
@@:
360 
    cmp 	dword[.delta_y],0
 388 
    cmp 	dword[.delta_y],0
361 
    jl		@f
 389 
    jl		@f
- 
 
 390 
    add 	edi,[.xres3]  ;SIZE_X*3+3
362 
    add 	edi,SIZE_X*3+3
 391 
    add 	edi,3
- 
 
 392 
    add 	esi,[.xres4]  ;SIZE_X*4+4
363 
    add 	esi,SIZE_X*4+4
 393 
    add 	esi,4
364 
    jmp 	.d45_1
 394 
    jmp 	.d45_1
365 
@@:
 395 
@@:
- 
 
 396 
    sub 	edi,[.xres3]  ;(SIZE_X*3)-3
366 
    sub 	edi,(SIZE_X*3)-3
 397 
    sub 	edi,3
- 
 
 398 
    sub 	esi,[.xres4]  ;(SIZE_X*4)-4
367 
    sub 	esi,(SIZE_X*4)-4
 399 
    sub 	esi,4
368 
.d45_1:
 400 
.d45_1:
Line 369... Line 401...
369 
    .update_cur_var
 401 
    .update_cur_var
370 
 
 402 
 
Line 393... Line 425...
393 
    idiv	ebx
 425 
    idiv	ebx
394 
    mov 	[.delta],eax
 426 
    mov 	[.delta],eax
Line 395... Line 427...
395 
 
 427 
 
Line 396... Line 428...
396 
    call	.calc_delta
 428 
    call	.calc_delta
397 
 
 429 
 
398 
    mov 	eax,SIZE_X
 430 
    mov 	eax,[.xres] ;SIZE_X
399 
    movsx	ebx,word[.y1] ;calc begin values in screen and Z buffers
 431 
    movsx	ebx,word[.y1] ;calc begin values in screen and Z buffers
400 
    mul 	ebx
 432 
    mul 	ebx
401 
    lea 	ebx,[3*eax]
 433 
    lea 	ebx,[3*eax]
Line 444... Line 476...
444 
 
 476 
 
Line 445... Line 477...
445 
    .draw_pixel
 477 
    .draw_pixel
446 
 
 478 
 
- 
 
 479 
@@:
447 
@@:
 480 
    mov 	eax,[.delta]
- 
 
 481 
    mov 	ebx,[.xres3]
448 
    mov 	eax,[.delta]
 482 
    add 	[.ccoord],eax
449 
    add 	[.ccoord],eax
 483 
    mov 	eax,[.xres4]
450 
    add 	dword[.cscr],SIZE_X*3  ;
 484 
    add 	dword[.cscr],ebx  ;SIZE_X*3  ;
Line 451... Line 485...
451 
    add 	dword[.czbuf],SIZE_X*4
 485 
    add 	dword[.czbuf],eax  ;SIZE_X*4
Line 452... Line 486...
452 
.d_m_v1:
 486 
.d_m_v1:
Line 516... Line 550...
516 
.draw_m_h:
 550 
.draw_m_h:
517 
    mov 	edi,[.cscr]
 551 
    mov 	edi,[.cscr]
518 
    mov 	esi,[.czbuf]
 552 
    mov 	esi,[.czbuf]
519 
    mov 	eax,[.ccoord]	 ; ccoord - cur y coordinate
 553 
    mov 	eax,[.ccoord]	 ; ccoord - cur y coordinate
520 
    sar 	eax,ROUND
 554 
    sar 	eax,ROUND
521 
    mov 	ebx,SIZE_X
 555 
    mov 	ebx,[.xres]  ;SIZE_X
522 
    mul 	ebx
 556 
    mul 	ebx
523 
    add 	esi,eax
 557 
    add 	esi,eax
524 
    lea 	eax,[eax*3]
 558 
    lea 	eax,[eax*3]
525 
    add 	esi,eax
 559 
    add 	esi,eax
526 
    add 	edi,eax
 560 
    add 	edi,eax