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Line 131... Line 131...
131 
proc ZB_fillTriangleSmooth, zb:dword, p0:dword, p1:dword, p2:dword
 131 
proc ZB_fillTriangleSmooth, zb:dword, p0:dword, p1:dword, p2:dword
132 
locals
 132 
locals
133 
include 'ztriangle.inc'
 133 
include 'ztriangle.inc'
Line 134... Line 134...
134 
 
 134 
 
135 
align 16
 135 
align 16
- 
 
 136 
proc ZB_setTexture uses eax ebx, zb:dword, texture:dword,\
136 
proc ZB_setTexture uses eax ebx, zb:dword, texture:dword
 137 
	s_bound:dword, t_bound:dword, s_log2:dword
137 
	mov eax,[zb]
 138 
	mov eax,[zb]
138 
	mov ebx,[texture]
 139 
	mov ebx,[texture]
- 
 
 140 
	mov dword[eax+offs_zbuf_current_texture],ebx
- 
 
 141 
	mov ebx,[s_log2]
- 
 
 142 
	mov dword[eax+offs_zbuf_s_log2],ebx
- 
 
 143 
	mov ebx,[s_bound]
- 
 
 144 
	mov dword[eax+offs_zbuf_s_bound],ebx
- 
 
 145 
	mov ebx,[t_bound]
139 
	mov dword[eax+offs_zbuf_current_texture],ebx
 146 
	mov dword[eax+offs_zbuf_t_bound],ebx
140 
	ret
 147 
	ret
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141 
endp
 148 
endp
142 
 
 149 
 
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143 
INTERP_Z equ 1
 150 
INTERP_Z equ 1
144 
INTERP_ST equ 1
 151 
INTERP_ST equ 1
145 
 
 152 
 
146 
macro DRAW_INIT
 153 
macro DRAW_INIT
147 
{
 154 
{
- 
 
 155 
	mov eax,[zb]
- 
 
 156 
	mov ebx,[eax+offs_zbuf_current_texture]
- 
 
 157 
	mov [texture],ebx
- 
 
 158 
	mov ebx,[eax+offs_zbuf_s_log2]
- 
 
 159 
	mov [s_log2],ebx ;s_log2 = zb.s_log2
- 
 
 160 
	mov ebx,[eax+offs_zbuf_s_bound]
148 
	mov eax,[zb]
 161 
	mov [s_bound],ebx ;s_bound = zb.s_bound
Line 149... Line 162...
149 
	mov eax,[eax+offs_zbuf_current_texture]
 162 
	mov ebx,[eax+offs_zbuf_t_bound]
150 
	mov [texture],eax
 163 
	mov [t_bound],ebx ;t_bound = zb.t_bound
151 
}
 164 
}
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159 
	jl .end_0
 172 
	jl .end_0
160 
		;edi = pp
 173 
		;edi = pp
161 
		mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение
 174 
		mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение
162 
if TGL_FEATURE_RENDER_BITS eq 24
 175 
if TGL_FEATURE_RENDER_BITS eq 24
163 
		mov ebx,[t]
 176 
		mov ebx,[t]
164 
		and ebx,0x3fc00000
 177 
		and ebx,[t_bound]
- 
 
 178 
		mov ecx,[s_log2]
- 
 
 179 
		shr ebx,cl ;(t & t_bound) >> s_log2
165 
		mov eax,[s]
 180 
		mov eax,[s]
166 
		and eax,0x003fc000
 181 
		and eax,[s_bound]
- 
 
 182 
		shr eax,ZB_POINT_TEXEL_SIZE
167 
		or ebx,eax
 183 
		or ebx,eax
168 
		shr ebx,14
 - 
 
169 
		imul ebx,3
 184 
		imul ebx,3
170 
		add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | s) >> 14) * 3
 185 
		add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | s) >> 14) * 3
171 
		mov ax,word[ebx]
 186 
		mov ax,word[ebx]
172 
		mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1]
 187 
		mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1]
173 
		mov al,byte[ebx+2]
 188 
		mov al,byte[ebx+2]
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186 
 
 201 
 
187 
align 16
 202 
align 16
188 
proc ZB_fillTriangleMapping, zb:dword, p0:dword, p1:dword, p2:dword
 203 
proc ZB_fillTriangleMapping, zb:dword, p0:dword, p1:dword, p2:dword
189 
locals
 204 
locals
- 
 
 205 
	texture dd ? ;PIXEL*
- 
 
 206 
	s_log2 dd ? ;unsigned int
- 
 
 207 
	s_bound dd ? ;unsigned int
190 
	texture dd ? ;PIXEL*
 208 
	t_bound dd ? ;unsigned int
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191 
include 'ztriangle.inc'
 209 
include 'ztriangle.inc'
192 
 
 210 
 
193 
;
 211 
;
194 
; Texture mapping with perspective correction.
 212 
; Texture mapping with perspective correction.
195 
; We use the gradient method to make less divisions.
 213 
; We use the gradient method to make less divisions.
196 
; TODO: pipeline the division
 - 
 
Line 197... Line 214...
197 
;
 214 
; TODO: pipeline the division
198 
if 1
 215 
;
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199 
 
 216 
 
Line 200... Line 217...
200 
INTERP_Z equ 1
 217 
INTERP_Z equ 1
201 
INTERP_STZ equ 1
 218 
INTERP_STZ equ 1
202 
 
 219 
 
203 
NB_INTERP equ 8
 220 
NB_INTERP equ 8
204 
 
 221 
 
- 
 
 222 
macro DRAW_INIT
- 
 
 223 
{
- 
 
 224 
	mov eax,[zb]
- 
 
 225 
	mov ebx,[eax+offs_zbuf_current_texture]
- 
 
 226 
	mov [texture],ebx
- 
 
 227 
	mov ebx,[eax+offs_zbuf_s_log2]
205 
macro DRAW_INIT
 228 
	mov [s_log2],ebx ;s_log2 = zb.s_log2
206 
{
 229 
	mov ebx,[eax+offs_zbuf_s_bound]
207 
	mov eax,[zb]
 230 
	mov [s_bound],ebx ;s_bound = zb.s_bound
208 
	mov eax,[eax+offs_zbuf_current_texture]
 231 
	mov ebx,[eax+offs_zbuf_t_bound]
209 
	mov [texture],eax
 232 
	mov [t_bound],ebx ;t_bound = zb.t_bound
Line 229... Line 252...
229 
	jl .end_0
 252 
	jl .end_0
230 
		;edi = pp
 253 
		;edi = pp
231 
		mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение
 254 
		mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение
232 
if TGL_FEATURE_RENDER_BITS eq 24
 255 
if TGL_FEATURE_RENDER_BITS eq 24
233 
		mov ebx,[t]
 256 
		mov ebx,[t]
234 
		and ebx,0x3fc00000
 257 
		and ebx,[t_bound]
- 
 
 258 
		mov ecx,[s_log2]
- 
 
 259 
		shr ebx,cl ;(t & t_bound) >> s_log2
235 
		mov eax,[s]
 260 
		mov eax,[s]
236 
		and eax,0x003fc000
 261 
		and eax,[s_bound]
- 
 
 262 
		shr eax,ZB_POINT_TEXEL_SIZE
237 
		or ebx,eax
 263 
		or ebx,eax
238 
		shr ebx,14
 - 
 
239 
		imul ebx,3
 264 
		imul ebx,3
240 
		add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | (s & 0x003FC000)) >> 14) * 3
 265 
		add ebx,[texture] ;ptr = texture + (((t & 0x3fc00000) | (s & 0x003FC000)) >> 14) * 3
241 
		mov ax,word[ebx]
 266 
		mov ax,word[ebx]
242 
		mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1]
 267 
		mov word[edi+3*_a],ax ;pp[3 * _a]= ptr[0,1]
243 
		mov al,byte[ebx+2]
 268 
		mov al,byte[ebx+2]
Line 365... Line 390...
365 
	fndzdx dd ? ;float
 390 
	fndzdx dd ? ;float
366 
	ndszdx dd ? ;float
 391 
	ndszdx dd ? ;float
367 
	ndtzdx dd ? ;float
 392 
	ndtzdx dd ? ;float
368 
	zinv dd ? ;float
 393 
	zinv dd ? ;float
369 
	f_z dd ? ;float - переменная отвечающая за геометрию текстуры
 394 
	f_z dd ? ;float - переменная отвечающая за геометрию текстуры
- 
 
 395 
	s_log2 dd ? ;unsigned int
- 
 
 396 
	s_bound dd ? ;unsigned int
- 
 
 397 
	t_bound dd ? ;unsigned int
370 
include 'ztriangle.inc'
 398 
include 'ztriangle.inc'
371 
 
 - 
 
372 
end if
 - 
 
373 
 
 - 
 
374 
if 0
 - 
 
375 
 
 - 
 
376 
; slow but exact version (only there for reference, incorrect for 24
 - 
 
377 
; bits)
 - 
 
378 
 
 - 
 
379 
INTERP_Z equ 1
 - 
 
380 
INTERP_STZ equ 1
 - 
 
381 
 
 - 
 
382 
macro DRAW_INIT
 - 
 
383 
{
 - 
 
384 
	mov eax,[zb]
 - 
 
385 
	mov eax,[eax+offs_zbuf_current_texture]
 - 
 
386 
	mov [texture],eax
 - 
 
387 
}
 - 
 
388 
 
 - 
 
389 
macro PUT_PIXEL _a
 - 
 
390 
{
 - 
 
391 
local .end_0
 - 
 
392 
	mov eax,[z]
 - 
 
393 
	shr eax,ZB_POINT_Z_FRAC_BITS
 - 
 
394 
	cmp ax,word[esi+2*_a] ;if (zz >= pz[_a])
 - 
 
395 
	jl .end_0
 - 
 
396 
		;edi = pp
 - 
 
397 
		mov word[esi+2*_a],ax ;пишем в буфер глубины новое значение
 - 
 
398 
		fild dword[z]
 - 
 
399 
		fld dword[s_z]
 - 
 
400 
		fdiv st0,st1
 - 
 
401 
		fistp dword[esp-4] ;s = (int) (s_z / (float) z)
 - 
 
402 
		fld dword[t_z]
 - 
 
403 
		fdiv st0,st1
 - 
 
404 
		fistp dword[esp-8] ;t = (int) (t_z / (float) z)
 - 
 
405 
		mov eax,dword[esp-8]
 - 
 
406 
		and eax,0x3FC00000
 - 
 
407 
		or eax,dword[esp-4]
 - 
 
408 
		shr eax,12 ;14
 - 
 
409 
		add eax,[texture]
 - 
 
410 
		mov eax,[eax]
 - 
 
411 
		stosd ;pp[_a] = texture[((t & 0x3FC00000) | s) >> 14]
 - 
 
412 
		sub edi,4
 - 
 
413 
	.end_0:
 - 
 
414 
	mov eax,[dzdx]
 - 
 
415 
	add [z],eax
 - 
 
416 
	fld dword[dszdx]
 - 
 
417 
	fadd dword[s_z]
 - 
 
418 
	fstp dword[s_z]
 - 
 
419 
	fld dword,[dtzdx]
 - 
 
420 
	fadd dword[t_z]
 - 
 
421 
	fstp dword[t_z]
 - 
 
422 
}
 - 
 
423 
 
 - 
 
424 
align 16
 - 
 
425 
proc ZB_fillTriangleMappingPerspective, zb:dword, p0:dword, p1:dword, p2:dword
 - 
 
426 
locals
 - 
 
427 
	texture dd ? ;PIXEL*
 - 
 
428 
include 'ztriangle.inc'
 - 
 
429 
 
 - 
 
430 
end if
 -