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Rev Author Line No. Line
5353 IgorA 1 
if DEBUG
2 
f_vt db ' gl_vertex_transform',0
3 
end if
5153 IgorA 4 
 
6145 IgorA 5 
align 16
5153 IgorA 6 
proc glopNormal uses ecx esi edi, context:dword, p:dword
7 
	mov esi,[p]
8 
	add esi,4
9 
	mov edi,[context]
6523 IgorA 10 
	add edi,GLContext.current_normal
5218 IgorA 11 
	mov ecx,3
5153 IgorA 12 
	rep movsd
5218 IgorA 13 
	mov dword[edi],0.0 ;context.current_normal.W = 0.0
5153 IgorA 14 
	ret
15 
endp
16 
 
6145 IgorA 17 
align 16
5153 IgorA 18 
proc glopTexCoord uses ecx esi edi, context:dword, p:dword
19 
	mov esi,[p]
20 
	add esi,4
21 
	mov edi,[context]
6523 IgorA 22 
	add edi,GLContext.current_tex_coord
5153 IgorA 23 
	mov ecx,4
24 
	rep movsd
25 
	ret
26 
endp
27 
 
6145 IgorA 28 
align 16
5153 IgorA 29 
proc glopEdgeFlag uses eax ebx, context:dword, p:dword
30 
	mov eax,[context]
31 
	mov ebx,[p]
32 
	mov ebx,[ebx+4] ;ebx = p[1]
6523 IgorA 33 
	mov dword[eax+GLContext.current_edge_flag],ebx
5153 IgorA 34 
	ret
35 
endp
36 
 
6145 IgorA 37 
align 16
5153 IgorA 38 
proc glopColor uses eax ecx esi edi, context:dword, p:dword
39 
locals
40 
	q rd 7
41 
endl
42 
	;current_color[3] = p[1-4]
43 
	;longcurrent_color[2] = p[5-7]
44 
	mov esi,[p]
45 
	add esi,4
46 
	mov edi,[context]
6523 IgorA 47 
	add edi,GLContext.current_color
5153 IgorA 48 
	mov ecx,7
49 
	rep movsd
50 
 
51 
	mov eax,[context]
6523 IgorA 52 
	cmp dword[eax+GLContext.color_material_enabled],0
5213 IgorA 53 
	je @f
5153 IgorA 54 
		mov dword[q],OP_Material
6523 IgorA 55 
		mov ecx,[eax+GLContext.current_color_material_mode]
5153 IgorA 56 
		mov dword[q+4],ecx
6523 IgorA 57 
		mov ecx,[eax+GLContext.current_color_material_type]
5153 IgorA 58 
		mov dword[q+8],ecx
59 
		mov esi,[p]
60 
		add esi,4
8062 IgorA 61 
		lea edi,[ebp-16] ;edi = &q[3]
5153 IgorA 62 
		mov ecx,4
63 
		rep movsd
5262 IgorA 64 
		;mov edi,ebp
65 
		sub edi,28 ;edi = &q
66 
		stdcall glopMaterial, eax,edi
5153 IgorA 67 
	@@:
68 
	ret
69 
endp
70 
 
6145 IgorA 71 
align 16
5153 IgorA 72 
proc gl_eval_viewport uses eax, context:dword
73 
locals
74 
	zsize dd ? ;float
75 
endl
76 
	mov eax,[context]
6523 IgorA 77 
	add eax,GLContext.viewport ;eax = (GLViewport*) v
5153 IgorA 78 
 
79 
	mov dword[zsize],(1 shl (ZB_Z_BITS + ZB_POINT_Z_FRAC_BITS))
80 
	fild dword[zsize]
81 
	fstp dword[zsize]
82 
 
83 
	fld1
84 
	fld1
85 
	fadd st1,st0 ;st1 = 2.0
86 
	fdiv st0,st1 ;st0 = 0.5
87 
 
8069 IgorA 88 
	fild dword[eax+GLViewport.xsize]
5153 IgorA 89 
	fsub st0,st1
90 
	fdiv st0,st2
8069 IgorA 91 
	fst dword[eax+GLViewport.scale+offs_X]
92 
	fiadd dword[eax+GLViewport.xmin]
93 
	fstp dword[eax+GLViewport.trans+offs_X]
5153 IgorA 94 
 
8069 IgorA 95 
	fild dword[eax+GLViewport.ysize]
5153 IgorA 96 
	fsub st0,st1
97 
	fdiv st0,st2
98 
	fchs
8069 IgorA 99 
	fst dword[eax+GLViewport.scale+offs_Y]
5153 IgorA 100 
	fchs
8069 IgorA 101 
	fiadd dword[eax+GLViewport.ymin]
102 
	fstp dword[eax+GLViewport.trans+offs_Y]
5153 IgorA 103 
 
104 
	fld dword[zsize]
105 
	fsub st0,st1
106 
	fdiv st0,st2
107 
	fchs
8069 IgorA 108 
	fst dword[eax+GLViewport.scale+offs_Z]
5153 IgorA 109 
	fchs
110 
	mov dword[zsize],(1 shl ZB_POINT_Z_FRAC_BITS) / 2
111 
	fiadd dword[zsize]
8069 IgorA 112 
	fstp dword[eax+GLViewport.trans+offs_Z]
5153 IgorA 113 
	ret
114 
endp
115 
 
116 
 
6145 IgorA 117 
align 16
5153 IgorA 118 
proc glopBegin uses eax ebx ecx edx, context:dword, p:dword
119 
locals
120 
	tmp M4
121 
endl
5353 IgorA 122 
;assert(context.in_begin == 0)
5153 IgorA 123 
 
124 
	mov edx,[context]
125 
	mov ebx,[p]
126 
	mov ebx,[ebx+4] ;ebx = p[1]
6523 IgorA 127 
	mov [edx+GLContext.begin_type],ebx
128 
	mov dword[edx+GLContext.in_begin],1
129 
	mov dword[edx+GLContext.vertex_n],0
130 
	mov dword[edx+GLContext.vertex_cnt],0
5153 IgorA 131 
 
6523 IgorA 132 
	bt dword[edx+GLContext.matrix_model_projection_updated],0
5153 IgorA 133 
	jnc .end_mmpu
134 
 
6523 IgorA 135 
	cmp dword[edx+GLContext.lighting_enabled],0 ;if(context.lighting_enabled)
6145 IgorA 136 
	jne .if_0
6523 IgorA 137 
	cmp dword[eax+GLContext.texture_2d_enabled],0
6145 IgorA 138 
	jne .if_0
139 
		jmp @f
140 
align 4
141 
	.if_0:
5256 IgorA 142 
if DEBUG ;context.matrix_stack_ptr[0]
6523 IgorA 143 
	stdcall gl_print_matrix,dword[edx+GLContext.matrix_stack_ptr],4
5256 IgorA 144 
end if
5153 IgorA 145 
		; precompute inverse modelview
8062 IgorA 146 
		lea ebx,[ebp-sizeof.M4]
6523 IgorA 147 
		stdcall gl_M4_Inv, ebx,dword[edx+GLContext.matrix_stack_ptr]
5256 IgorA 148 
if DEBUG ;tmp
149 
	stdcall dbg_print,txt_sp,txt_nl
150 
	stdcall gl_print_matrix,ebx,4
151 
end if
152 
		push ebx
8062 IgorA 153 
		lea ebx,[edx+GLContext.matrix_model_view_inv]
5256 IgorA 154 
		stdcall gl_M4_Transpose, ebx
155 
if DEBUG ;context.matrix_model_view_inv
156 
	stdcall dbg_print,txt_sp,txt_nl
157 
	stdcall gl_print_matrix,ebx,4
158 
end if
5153 IgorA 159 
		jmp .end_if_0
6145 IgorA 160 
align 4
5153 IgorA 161 
	@@:
8062 IgorA 162 
		lea ecx,[edx+GLContext.matrix_model_projection]
5153 IgorA 163 
		; precompute projection matrix
6523 IgorA 164 
		stdcall gl_M4_Mul, ecx,dword[edx+GLContext.matrix_stack_ptr+4],dword[edx+GLContext.matrix_stack_ptr]
5213 IgorA 165 
 
5153 IgorA 166 
		; test to accelerate computation
6523 IgorA 167 
		mov dword[edx+GLContext.matrix_model_projection_no_w_transform],0
5153 IgorA 168 
		fldz
169 
		fld dword[ecx+12*4]
170 
		fcomp st1
171 
		fstsw ax
172 
		sahf
5353 IgorA 173 
		jne @f
5153 IgorA 174 
		fld dword[ecx+13*4]
175 
		fcomp st1
176 
		fstsw ax
177 
		sahf
5353 IgorA 178 
		jne @f
5153 IgorA 179 
		fld dword[ecx+14*4]
180 
		fcomp st1
181 
		fstsw ax
182 
		sahf
5353 IgorA 183 
		jne @f
6523 IgorA 184 
			mov dword[edx+GLContext.matrix_model_projection_no_w_transform],1
5353 IgorA 185 
		@@:
186 
		ffree st0 ;0.0
187 
		fincstp
5153 IgorA 188 
	.end_if_0:
189 
 
190 
		; test if the texture matrix is not Identity
8062 IgorA 191 
		lea eax,[edx+GLContext.matrix_stack_ptr+8]
5218 IgorA 192 
		stdcall gl_M4_IsId,eax
193 
		xor eax,1
6523 IgorA 194 
		mov dword[edx+GLContext.apply_texture_matrix],eax
5153 IgorA 195 
 
6523 IgorA 196 
		mov dword[edx+GLContext.matrix_model_projection_updated],0
5153 IgorA 197 
	.end_mmpu:
198 
 
199 
	; viewport
8069 IgorA 200 
	cmp dword[edx+GLContext.viewport+GLViewport.updated],0 ;if (context.viewport.updated)
5153 IgorA 201 
	je @f
202 
		stdcall gl_eval_viewport,edx
8069 IgorA 203 
		mov dword[edx+GLContext.viewport+GLViewport.updated],0
5153 IgorA 204 
	@@:
205 
	; triangle drawing functions
6523 IgorA 206 
	cmp dword[edx+GLContext.render_mode],GL_SELECT
5153 IgorA 207 
	jne @f
6523 IgorA 208 
		mov dword[edx+GLContext.draw_triangle_front],gl_draw_triangle_select
209 
		mov dword[edx+GLContext.draw_triangle_back],gl_draw_triangle_select
5153 IgorA 210 
		jmp .end_if_2
6145 IgorA 211 
align 4
5153 IgorA 212 
	@@:
213 
 
6523 IgorA 214 
	cmp dword[edx+GLContext.polygon_mode_front],GL_POINT
5153 IgorA 215 
	jne @f
6523 IgorA 216 
		mov dword[edx+GLContext.draw_triangle_front],gl_draw_triangle_point
5153 IgorA 217 
		jmp .end_if_1
6145 IgorA 218 
align 4
5153 IgorA 219 
	@@:
6523 IgorA 220 
	cmp dword[edx+GLContext.polygon_mode_front],GL_LINE
5153 IgorA 221 
	jne @f
6523 IgorA 222 
		mov dword[edx+GLContext.draw_triangle_front],gl_draw_triangle_line
5153 IgorA 223 
		jmp .end_if_1
6145 IgorA 224 
align 4
5153 IgorA 225 
	@@: ;default:
6523 IgorA 226 
		mov dword[edx+GLContext.draw_triangle_front],gl_draw_triangle_fill
5153 IgorA 227 
	.end_if_1:
228 
 
6523 IgorA 229 
	cmp dword[edx+GLContext.polygon_mode_back],GL_POINT
5153 IgorA 230 
	jne @f
6523 IgorA 231 
		mov dword[edx+GLContext.draw_triangle_back],gl_draw_triangle_point
5153 IgorA 232 
		jmp .end_if_2
6145 IgorA 233 
align 4
5153 IgorA 234 
	@@:
6523 IgorA 235 
	cmp dword[edx+GLContext.polygon_mode_back],GL_LINE
5153 IgorA 236 
	jne @f
6523 IgorA 237 
		mov dword[edx+GLContext.draw_triangle_back],gl_draw_triangle_line
5153 IgorA 238 
		jmp .end_if_2
6145 IgorA 239 
align 4
5153 IgorA 240 
	@@: ;default:
6523 IgorA 241 
	    mov dword[edx+GLContext.draw_triangle_back],gl_draw_triangle_fill
5153 IgorA 242 
	.end_if_2:
243 
	ret
244 
endp
245 
 
246 
; coords, tranformation , clip code and projection
247 
; TODO : handle all cases
6145 IgorA 248 
align 16
5153 IgorA 249 
proc gl_vertex_transform, context:dword, v:dword
250 
pushad
251 
	mov eax,[context]
252 
	mov edx,[v]
6523 IgorA 253 
	cmp dword[eax+GLContext.lighting_enabled],0 ;if (context.lighting_enabled)
6145 IgorA 254 
	jne @f
6523 IgorA 255 
	cmp dword[eax+GLContext.texture_2d_enabled],0
6145 IgorA 256 
	jne @f
257 
		jmp .els_0
258 
align 4
259 
	@@:
5153 IgorA 260 
		; eye coordinates needed for lighting
6523 IgorA 261 
		mov ebx,dword[eax+GLContext.matrix_stack_ptr]
5153 IgorA 262 
		finit
8062 IgorA 263 
		fld dword[edx+GLVertex.coord+offs_X]
264 
		fld dword[edx+GLVertex.coord+offs_Y]
265 
		fld dword[edx+GLVertex.coord+offs_Z]
5153 IgorA 266 
 
267 
		mov ecx,4
268 
		.cycle_0:
269 
			fld dword[ebx]     ;st0 = m[0]
270 
			fmul st0,st3       ;st0 *= v.coord.X
271 
			fld dword[ebx+4]   ;st0 = m[1]
272 
			fmul st0,st3       ;st0 *= v.coord.Y
5269 IgorA 273 
			faddp              ;st0 = v.coord.X * m[0] + v.coord.Y * m[1]
5153 IgorA 274 
			fld dword[ebx+8]   ;st0 = m[2]
5269 IgorA 275 
			fmul st0,st2       ;st0 *= v.coord.Z
5153 IgorA 276 
			fadd dword[ebx+12] ;st0 += m[3]
5392 IgorA 277 
			faddp              ;st0 = v.ec.X
8062 IgorA 278 
			fstp dword[edx+GLVertex.ec] ;v.ec.X = v.coord.X * m[0] + v.coord.Y * m[1] + v.coord.Z * m[2] + m[3]
5153 IgorA 279 
			add ebx,16 ;следущая строка матрицы
280 
			add edx,4  ;следущая координата вектора
281 
		loop .cycle_0
5218 IgorA 282 
		ffree st0
283 
		fincstp
284 
		ffree st0
285 
		fincstp
286 
		ffree st0
287 
		fincstp
5153 IgorA 288 
 
289 
		; projection coordinates
6523 IgorA 290 
		mov ebx,dword[eax+GLContext.matrix_stack_ptr+4]
5153 IgorA 291 
		mov edx,[v]
5218 IgorA 292 
 
8062 IgorA 293 
		fld dword[edx+GLVertex.ec+offs_X]
294 
		fld dword[edx+GLVertex.ec+offs_Y]
295 
		fld dword[edx+GLVertex.ec+offs_Z]
296 
		fld dword[edx+GLVertex.ec+offs_W]
5153 IgorA 297 
 
298 
		mov ecx,4
299 
		.cycle_1:
300 
			fld dword[ebx]     ;st0 = m[0]
5392 IgorA 301 
			fmul st0,st4       ;st0 *= v.ec.X
5153 IgorA 302 
			fld dword[ebx+4]   ;st0 = m[1]
5392 IgorA 303 
			fmul st0,st4       ;st0 *= v.ec.Y
5269 IgorA 304 
			faddp              ;st0 = v.ec.X * m[0] + v.ec.Y * m[1]
5153 IgorA 305 
			fld dword[ebx+8]   ;st0 = m[2]
5392 IgorA 306 
			fmul st0,st3       ;st0 *= v.ec.Z
307 
			faddp              ;st0 = v.ec.X * m[0] + v.ec.Y * m[1] + v.ec.Z * m[2]
308 
			fld dword[ebx+12]  ;st0 = m[3]
309 
			fmul st0,st2       ;st0 *= v.ec.W
5269 IgorA 310 
			faddp              ;st0 = v.pc.X
8062 IgorA 311 
			fstp dword[edx+GLVertex.pc] ;v.pc.X = v.ec.X * m[0] + v.ec.Y * m[1] + v.ec.Z * m[2] + v.ec.W * m[3]
5153 IgorA 312 
			add ebx,16 ;следущая строка матрицы
313 
			add edx,4  ;следущая координата вектора
314 
		loop .cycle_1
5218 IgorA 315 
		ffree st0
316 
		fincstp
317 
		ffree st0
318 
		fincstp
319 
		ffree st0
320 
		fincstp
5392 IgorA 321 
		ffree st0
322 
		fincstp
5153 IgorA 323 
 
8062 IgorA 324 
		lea ebx,[eax+GLContext.matrix_model_view_inv]
325 
		lea edi,[eax+GLContext.current_normal]
5153 IgorA 326 
		mov edx,[v]
5218 IgorA 327 
 
5256 IgorA 328 
		fld dword[edi] ;edi = &n
5153 IgorA 329 
		fld dword[edi+offs_Y]
330 
		fld dword[edi+offs_Z]
331 
 
8062 IgorA 332 
		add edx,GLVertex.normal
5153 IgorA 333 
 
5392 IgorA 334 
		fld dword[ebx]   ;st0 = m[0]
335 
		fmul st0,st3     ;st0 *= n.X
336 
		fld dword[ebx+4] ;st0 = m[1]
337 
		fmul st0,st3     ;st0 *= n.Y
338 
		faddp            ;st0 = n.X * m[0] + n.Y * m[1]
339 
		fld dword[ebx+8] ;st0 = m[2]
340 
		fmul st0,st2     ;st0 *= n.Z
341 
		faddp            ;st0 = v.normal.X
342 
		fstp dword[edx]  ;v.normal.X = n.X * m[0] + n.Y * m[1] + n.Z * m[2]
343 
 
344 
		fld dword[ebx+16];st0 = m[4]
345 
		fmul st0,st3     ;st0 *= n.X
346 
		fld dword[ebx+20];st0 = m[5]
347 
		fmul st0,st3     ;st0 *= n.Y
348 
		faddp            ;st0 = n.X * m[4] + n.Y * m[5]
349 
		fld dword[ebx+24];st0 = m[6]
350 
		fmul st0,st2     ;st0 *= n.Z
351 
		faddp            ;st0 = v.normal.X
352 
		fstp dword[edx+4];v.normal.X = n.X * m[4] + n.Y * m[5] + n.Z * m[6]
353 
 
354 
		fld dword[ebx+32];st0 = m[8]
355 
		fmul st0,st3     ;st0 *= n.X
356 
		fld dword[ebx+36];st0 = m[9]
357 
		fmul st0,st3     ;st0 *= n.Y
358 
		faddp            ;st0 = n.X * m[8] + n.Y * m[9]
359 
		fld dword[ebx+40];st0 = m[10]
360 
		fmul st0,st2     ;st0 *= n.Z
361 
		faddp            ;st0 = v.normal.X
362 
		fstp dword[edx+8];v.normal.X = n.X * m[8] + n.Y * m[9] + n.Z * m[10]
363 
 
6523 IgorA 364 
		cmp dword[eax+GLContext.normalize_enabled],0
5153 IgorA 365 
		je .end_els
5218 IgorA 366 
			stdcall gl_V3_Norm,edx
5153 IgorA 367 
		jmp .end_els
6145 IgorA 368 
align 4
5153 IgorA 369 
	.els_0:
370 
		; no eye coordinates needed, no normal
371 
		; NOTE: W = 1 is assumed
8062 IgorA 372 
		lea ebx,[eax+GLContext.matrix_model_projection]
5153 IgorA 373 
 
374 
		finit
8062 IgorA 375 
		fld dword[edx+GLVertex.coord+offs_X]
376 
		fld dword[edx+GLVertex.coord+offs_Y]
377 
		fld dword[edx+GLVertex.coord+offs_Z]
5153 IgorA 378 
 
8062 IgorA 379 
		lea esi,[edx+GLVertex.pc]
5153 IgorA 380 
 
381 
		fld dword[ebx]     ;st0 = m[0]
382 
		fmul st0,st3       ;st0 *= v.coord.X
383 
		fld dword[ebx+4]   ;st0 = m[1]
384 
		fmul st0,st3       ;st0 *= v.coord.Y
5269 IgorA 385 
		faddp              ;st0 = v.coord.X * m[0] + v.coord.Y * m[1]
5153 IgorA 386 
		fld dword[ebx+8]   ;st0 = m[2]
5269 IgorA 387 
		fmul st0,st2       ;st0 *= v.coord.Z
5153 IgorA 388 
		fadd dword[ebx+12] ;st0 += m[3]
5269 IgorA 389 
		faddp              ;st0 = v.pc.X
5153 IgorA 390 
		fstp dword[esi]    ;v.pc.X = v.coord.X * m[0] + v.coord.Y * m[1] + v.coord.Z * m[2] + m[3]
5175 IgorA 391 
 
5153 IgorA 392 
		fld dword[ebx+16]  ;st0 = m[4]
393 
		fmul st0,st3       ;st0 *= v.coord.X
394 
		fld dword[ebx+20]  ;st0 = m[5]
395 
		fmul st0,st3       ;st0 *= v.coord.Y
5269 IgorA 396 
		faddp              ;st0 = v.coord.X * m[4] + v.coord.Y * m[5]
5153 IgorA 397 
		fld dword[ebx+24]  ;st0 = m[6]
5269 IgorA 398 
		fmul st0,st2       ;st0 *= v.coord.Z
5153 IgorA 399 
		fadd dword[ebx+28] ;st0 += m[7]
5269 IgorA 400 
		faddp              ;st0 = v.pc.Y
401 
		fstp dword[esi+4]  ;v.pc.Y = v.coord.X * m[4] + v.coord.Y * m[5] + v.coord.Z * m[6] + m[7]
5175 IgorA 402 
 
5153 IgorA 403 
		fld dword[ebx+32]  ;st0 = m[8]
404 
		fmul st0,st3       ;st0 *= v.coord.X
405 
		fld dword[ebx+36]  ;st0 = m[9]
406 
		fmul st0,st3       ;st0 *= v.coord.Y
5269 IgorA 407 
		faddp              ;st0 = v.coord.X * m[8] + v.coord.Y * m[9]
5153 IgorA 408 
		fld dword[ebx+40]  ;st0 = m[10]
5269 IgorA 409 
		fmul st0,st2       ;st0 *= v.coord.Z
5153 IgorA 410 
		fadd dword[ebx+44] ;st0 += m[11]
5269 IgorA 411 
		faddp              ;st0 = v.pc.Z
412 
		fstp dword[esi+8]  ;v.pc.Z = v.coord.X * m[8] + v.coord.Y * m[9] + v.coord.Z * m[10] + m[11]
5153 IgorA 413 
 
6523 IgorA 414 
		cmp dword[eax+GLContext.matrix_model_projection_no_w_transform],0
5153 IgorA 415 
		je .els_1
416 
			;if (context.matrix_model_projection_no_w_transform)
417 
			mov ebx,dword[ebx+60] ;ebx = m[15]
418 
			mov dword[esi+12],ebx ;v.pc.W = m[15]
419 
			jmp .end_els
6145 IgorA 420 
align 4
5153 IgorA 421 
		.els_1:
422 
			fld dword[ebx+48]  ;st0 = m[12]
423 
			fmul st0,st3       ;st0 *= v.coord.X
424 
			fld dword[ebx+52]  ;st0 = m[13]
425 
			fmul st0,st3       ;st0 *= v.coord.Y
5269 IgorA 426 
			faddp              ;st0 = v.coord.X * m[12] + v.coord.Y * m[13]
5153 IgorA 427 
			fld dword[ebx+56]  ;st0 = m[14]
5269 IgorA 428 
			fmul st0,st2       ;st0 *= v.coord.Z
5153 IgorA 429 
			fadd dword[ebx+60] ;st0 += m[15]
5269 IgorA 430 
			faddp              ;st0 = v.pc.W
5153 IgorA 431 
			fstp dword[esi+12] ;v.pc.W = v.coord.X * m[12] + v.coord.Y * m[13] + v.coord.Z * m[14] + m[15]
432 
	.end_els:
5175 IgorA 433 
	ffree st0
434 
	fincstp
435 
	ffree st0
436 
	fincstp
437 
	ffree st0
438 
	fincstp
439 
 
5153 IgorA 440 
if DEBUG ;gl_vertex_transform
441 
	stdcall dbg_print,f_vt,txt_nl
442 
	mov edx,[v]
8062 IgorA 443 
	add edx,GLVertex.pc
5153 IgorA 444 
	stdcall gl_print_matrix,edx,1
445 
end if
446 
	mov edx,[v]
8062 IgorA 447 
	stdcall gl_clipcode, dword[edx+GLVertex.pc+offs_X], dword[edx+GLVertex.pc+offs_Y],\
448 
		dword[edx+GLVertex.pc+offs_Z], dword[edx+GLVertex.pc+offs_W]
449 
	mov dword[edx+GLVertex.clip_code],eax
5153 IgorA 450 
popad
451 
	ret
452 
endp
453 
 
6145 IgorA 454 
align 16
5153 IgorA 455 
proc glopVertex, context:dword, p:dword
456 
locals
457 
	;ebx = GLVertex * v
458 
	n dd ? ;ebp-4
459 
endl
460 
pushad
461 
	mov edx,[context]
462 
 
463 
;    assert(c->in_begin != 0);
464 
 
6523 IgorA 465 
	mov ecx,[edx+GLContext.vertex_n]
5153 IgorA 466 
	mov [n],ecx
6523 IgorA 467 
	inc dword[edx+GLContext.vertex_cnt]
5153 IgorA 468 
 
469 
	; quick fix to avoid crashes on large polygons
6523 IgorA 470 
	mov ecx,[edx+GLContext.vertex_max]
5153 IgorA 471 
	cmp dword[n],ecx
472 
	jl @f
6523 IgorA 473 
		shl dword[edx+GLContext.vertex_max],1 ; just double size
5153 IgorA 474 
		imul ecx,2*sizeof.GLVertex
475 
		stdcall gl_malloc,ecx
476 
		cmp eax,0
477 
		jne .no_err
478 
;gl_fatal_error("unable to allocate GLVertex array.\n");
479 
		.no_err:
480 
		mov edi,eax
481 
		mov ebx,eax
6523 IgorA 482 
		mov esi,[edx+GLContext.vertex]
5153 IgorA 483 
		mov ecx,[n]
484 
		imul ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb
485 
		rep movsd
6523 IgorA 486 
		stdcall gl_free,dword[edx+GLContext.vertex]
487 
		mov dword[edx+GLContext.vertex],ebx
5153 IgorA 488 
	@@:
489 
	; new vertex entry
490 
	mov ebx,[n]
491 
	imul ebx,sizeof.GLVertex
6523 IgorA 492 
	add ebx,[edx+GLContext.vertex]
5153 IgorA 493 
	inc dword[n]
494 
 
495 
	mov esi,[p]
496 
	add esi,4
8062 IgorA 497 
	lea edi,[ebx+GLVertex.coord] ;edi = &v.coord
5153 IgorA 498 
	mov ecx,4
499 
	rep movsd
500 
 
501 
	stdcall gl_vertex_transform, edx, ebx
502 
 
503 
	; color
6523 IgorA 504 
	cmp dword[edx+GLContext.lighting_enabled],0
5153 IgorA 505 
	je .els_0
506 
		stdcall gl_shade_vertex, edx,ebx
507 
		jmp @f
6145 IgorA 508 
align 4
5153 IgorA 509 
	.els_0:
8062 IgorA 510 
		lea esi,[edx+GLContext.current_color]
511 
		lea edi,[ebx+GLVertex.color] ;edi = &v.color
5392 IgorA 512 
		mov ecx,4
513 
		rep movsd
5153 IgorA 514 
	@@:
515 
 
516 
	; tex coords
6523 IgorA 517 
	cmp dword[edx+GLContext.texture_2d_enabled],0
5153 IgorA 518 
	je @f
6523 IgorA 519 
		cmp dword[edx+GLContext.apply_texture_matrix],0
5153 IgorA 520 
		je .els_1
8062 IgorA 521 
			lea eax,[edx+GLContext.current_tex_coord]
5269 IgorA 522 
			push eax ;&context.current_tex_coord
8062 IgorA 523 
			lea eax,[ebx+GLVertex.tex_coord]
6523 IgorA 524 
			stdcall gl_M4_MulV4, eax, dword[edx+GLContext.matrix_stack_ptr+8]
5153 IgorA 525 
			jmp @f
6145 IgorA 526 
align 4
5153 IgorA 527 
		.els_1:
8062 IgorA 528 
			lea esi,[edx+GLContext.current_tex_coord]
529 
			lea edi,[ebx+GLVertex.tex_coord]
5269 IgorA 530 
			mov ecx,4
531 
			rep movsd
5153 IgorA 532 
	@@:
533 
 
534 
	; precompute the mapping to the viewport
8062 IgorA 535 
	cmp dword[ebx+GLVertex.clip_code],0
5153 IgorA 536 
	jne @f
537 
		stdcall gl_transform_to_viewport, edx,ebx
538 
	@@:
539 
 
540 
	; edge flag
6523 IgorA 541 
	mov eax,[edx+GLContext.current_edge_flag]
8062 IgorA 542 
	mov dword[ebx+GLVertex.edge_flag],eax ;v.edge_flag = context.current_edge_flag
5153 IgorA 543 
 
6523 IgorA 544 
	cmp dword[edx+GLContext.begin_type],GL_POINTS
5153 IgorA 545 
	jne @f
6523 IgorA 546 
		stdcall gl_draw_point, edx, dword[edx+GLContext.vertex] ;dword[edx+...] = &context.vertex[0]
5153 IgorA 547 
		mov dword[n],0
548 
		jmp .end_f
6145 IgorA 549 
align 4
5153 IgorA 550 
	@@:
6523 IgorA 551 
	cmp dword[edx+GLContext.begin_type],GL_LINES
5153 IgorA 552 
	jne @f
553 
		cmp dword[n],2
554 
		jne .end_f
6523 IgorA 555 
			mov eax,[edx+GLContext.vertex]
5153 IgorA 556 
			push eax
557 
			add eax,sizeof.GLVertex
5175 IgorA 558 
			stdcall gl_draw_line, edx, eax
5153 IgorA 559 
			xor eax,eax
560 
			mov dword[n],eax
561 
		jmp .end_f
6145 IgorA 562 
align 4
5153 IgorA 563 
	@@:
6523 IgorA 564 
	cmp dword[edx+GLContext.begin_type],GL_LINE_STRIP
5153 IgorA 565 
	je .li_loop
6523 IgorA 566 
	cmp dword[edx+GLContext.begin_type],GL_LINE_LOOP
5153 IgorA 567 
	jne @f
568 
		.li_loop:
569 
		cmp dword[n],1
570 
		jne .els_2
6523 IgorA 571 
			mov esi,[edx+GLContext.vertex]
8062 IgorA 572 
			lea edi,[esi+2*sizeof.GLVertex]
5153 IgorA 573 
			mov ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb
574 
			rep movsd ;context.vertex[2] = context.vertex[0]
575 
			jmp .end_f
6145 IgorA 576 
align 4
5153 IgorA 577 
		.els_2:
578 
		cmp dword[n],2
579 
		jne .end_f ;else if (n == 2)
8062 IgorA 580 
			mov edi,[edx+GLContext.vertex]
581 
			lea esi,[edi+sizeof.GLVertex]
582 
			stdcall gl_draw_line, edx, esi, edi
5153 IgorA 583 
			mov ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb
584 
			rep movsd ;context.vertex[0] = context.vertex[1]
585 
			mov dword[n],1
586 
		jmp .end_f
6145 IgorA 587 
align 4
5153 IgorA 588 
	@@:
6523 IgorA 589 
	cmp dword[edx+GLContext.begin_type],GL_TRIANGLES
5153 IgorA 590 
	jne @f
591 
		cmp dword[n],3
592 
		jne .end_f
6523 IgorA 593 
			mov eax,[edx+GLContext.vertex]
5418 IgorA 594 
			mov [esp-12],eax
5175 IgorA 595 
			add eax,sizeof.GLVertex
5218 IgorA 596 
			mov [esp-8],eax
5175 IgorA 597 
			add eax,sizeof.GLVertex
5418 IgorA 598 
			mov [esp-4],eax
5218 IgorA 599 
			sub esp,12
5418 IgorA 600 
			stdcall gl_draw_triangle, edx ;v0,v1,v2
5153 IgorA 601 
			xor eax,eax
602 
			mov dword[n],eax
603 
		jmp .end_f
6145 IgorA 604 
align 4
5153 IgorA 605 
	@@:
6523 IgorA 606 
	cmp dword[edx+GLContext.begin_type],GL_TRIANGLE_STRIP
5153 IgorA 607 
	jne @f
6523 IgorA 608 
		cmp dword[edx+GLContext.vertex_cnt],3 ;if (context.vertex_cnt >= 3)
5269 IgorA 609 
		jl .end_f
610 
			cmp dword[n],3
611 
			jne .ts3
612 
				xor eax,eax
613 
				mov dword[n],eax
614 
			.ts3:
615 
			; needed to respect triangle orientation
6523 IgorA 616 
			mov eax,[edx+GLContext.vertex]
617 
			bt dword[edx+GLContext.vertex_cnt],0
5269 IgorA 618 
			jc .case_1
5418 IgorA 619 
				mov [esp-4],eax
5269 IgorA 620 
				add eax,sizeof.GLVertex
621 
				mov [esp-8],eax
622 
				add eax,sizeof.GLVertex
5418 IgorA 623 
				mov [esp-12],eax
5269 IgorA 624 
				sub esp,12
5418 IgorA 625 
				stdcall gl_draw_triangle, edx ;v2,v1,v0
5269 IgorA 626 
				jmp .end_f
6145 IgorA 627 
align 4
5269 IgorA 628 
			.case_1:
5418 IgorA 629 
				mov [esp-12],eax
5269 IgorA 630 
				add eax,sizeof.GLVertex
631 
				mov [esp-8],eax
632 
				add eax,sizeof.GLVertex
5418 IgorA 633 
				mov [esp-4],eax
5269 IgorA 634 
				sub esp,12
5418 IgorA 635 
				stdcall gl_draw_triangle, edx ;v0,v1,v2
5153 IgorA 636 
		jmp .end_f
6145 IgorA 637 
align 4
5153 IgorA 638 
	@@:
6523 IgorA 639 
	cmp dword[edx+GLContext.begin_type],GL_TRIANGLE_FAN
5153 IgorA 640 
	jne @f
5218 IgorA 641 
		cmp dword[n],3
5153 IgorA 642 
		jne .end_f
6523 IgorA 643 
			mov eax,[edx+GLContext.vertex]
5418 IgorA 644 
			mov [esp-12],eax
8062 IgorA 645 
			lea edi,[eax+sizeof.GLVertex]
646 
			mov [esp-8],edi
647 
			lea esi,[edi+sizeof.GLVertex]
648 
			mov [esp-4],esi
5218 IgorA 649 
			sub esp,12
5418 IgorA 650 
			stdcall gl_draw_triangle, edx ;v0,v1,v2
5218 IgorA 651 
			mov ecx,(sizeof.GLVertex)/4 ;((...)/4) что-бы использовать movsd вместо movsb
652 
			rep movsd ;context.vertex[1] = context.vertex[2]
5153 IgorA 653 
			mov dword[n],2
654 
		jmp .end_f
6145 IgorA 655 
align 4
5153 IgorA 656 
	@@:
6523 IgorA 657 
	cmp dword[edx+GLContext.begin_type],GL_QUADS
5153 IgorA 658 
	jne @f
659 
		cmp dword[n],4
660 
		jne .end_f
6523 IgorA 661 
			mov eax,[edx+GLContext.vertex]
5213 IgorA 662 
			add eax,2*sizeof.GLVertex
8062 IgorA 663 
			mov dword[eax+GLVertex.edge_flag],0 ;context.vertex[2].edge_flag = 0
5213 IgorA 664 
			push eax
665 
			sub eax,sizeof.GLVertex
666 
			push eax
667 
			sub eax,sizeof.GLVertex
668 
			stdcall gl_draw_triangle, edx,eax ;v0,v1,v2
8062 IgorA 669 
			mov dword[eax+GLVertex.edge_flag],0 ;context.vertex[0].edge_flag = 0
5213 IgorA 670 
			add eax,2*sizeof.GLVertex
8062 IgorA 671 
			mov dword[eax+GLVertex.edge_flag],1 ;context.vertex[2].edge_flag = 1
5213 IgorA 672 
			add eax,sizeof.GLVertex
673 
			push eax
674 
			sub eax,sizeof.GLVertex
675 
			push eax
676 
			sub eax,2*sizeof.GLVertex
677 
			stdcall gl_draw_triangle, edx,eax ;v0,v2,v3
5153 IgorA 678 
			xor eax,eax
679 
			mov dword[n],eax
680 
		jmp .end_f
6145 IgorA 681 
align 4
5153 IgorA 682 
	@@:
6523 IgorA 683 
	cmp dword[edx+GLContext.begin_type],GL_QUAD_STRIP
5153 IgorA 684 
	jne @f
5218 IgorA 685 
		cmp dword[n],4
5153 IgorA 686 
		jne .end_f
6523 IgorA 687 
			mov eax,[edx+GLContext.vertex]
5418 IgorA 688 
			mov [esp-12],eax
5218 IgorA 689 
			mov edi,eax
690 
			add eax,sizeof.GLVertex
691 
			mov [esp-8],eax
692 
			add eax,sizeof.GLVertex
5418 IgorA 693 
			mov [esp-4],eax
5218 IgorA 694 
			mov esi,eax
695 
			sub esp,12
696 
			stdcall gl_draw_triangle, edx ;v0,v1,v2
5418 IgorA 697 
			mov [esp-4],eax
5218 IgorA 698 
			add eax,sizeof.GLVertex
699 
			mov [esp-8],eax
700 
			sub eax,2*sizeof.GLVertex
5418 IgorA 701 
			mov [esp-12],eax
5218 IgorA 702 
			sub esp,12
703 
			stdcall gl_draw_triangle, edx ;v1,v3,v2
704 
			mov ecx,(sizeof.GLVertex)/2 ;((...)/2) копируем 2 вершины
705 
			rep movsd ;context.vertex[0] = context.vertex[2], context.vertex[1] = context.vertex[3]
5153 IgorA 706 
			mov dword[n],2
707 
		jmp .end_f
6145 IgorA 708 
align 4
5153 IgorA 709 
	@@:
6523 IgorA 710 
	cmp dword[edx+GLContext.begin_type],GL_POLYGON
5213 IgorA 711 
	je .end_f
5153 IgorA 712 
;    default:
713 
;       gl_fatal_error("glBegin: type %x not handled\n", c->begin_type);
714 
;    }
715 
	.end_f:
716 
 
717 
	mov ecx,[n]
6523 IgorA 718 
	mov [edx+GLContext.vertex_n],ecx
5153 IgorA 719 
popad
720 
	ret
721 
endp
722 
 
6145 IgorA 723 
align 16
5213 IgorA 724 
proc glopEnd uses eax ebx ecx, context:dword, p:dword
5153 IgorA 725 
	mov eax,[context]
726 
;    assert(c->in_begin == 1);
727 
 
6523 IgorA 728 
	cmp dword[eax+GLContext.begin_type],GL_LINE_LOOP
5153 IgorA 729 
	jne .else_i
6523 IgorA 730 
		cmp dword[eax+GLContext.vertex_cnt],3
5153 IgorA 731 
		jl .end_i
6523 IgorA 732 
			mov ebx,[eax+GLContext.vertex]
5153 IgorA 733 
			push ebx
734 
			add ebx,2*sizeof.GLVertex
735 
			push ebx
736 
			stdcall gl_draw_line, eax
737 
		jmp .end_i
6145 IgorA 738 
align 4
5153 IgorA 739 
	.else_i:
6523 IgorA 740 
	cmp dword[eax+GLContext.begin_type],GL_POLYGON
5153 IgorA 741 
	jne .end_i
6523 IgorA 742 
		mov ebx,dword[eax+GLContext.vertex_cnt]
5153 IgorA 743 
		@@: ;while (ebx >= 3)
744 
		cmp ebx,3
745 
		jl .end_i
5213 IgorA 746 
			dec ebx
747 
			mov ecx,ebx
748 
			imul ecx,sizeof.GLVertex
6523 IgorA 749 
			add ecx,[eax+GLContext.vertex]
5213 IgorA 750 
			push ecx ;ecx = &context.vertex[i]
751 
			sub ecx,sizeof.GLVertex
752 
			push ecx ;ecx = &context.vertex[i-1]
6523 IgorA 753 
			stdcall gl_draw_triangle, eax,[eax+GLContext.vertex]
5153 IgorA 754 
		jmp @b
6145 IgorA 755 
align 4
5153 IgorA 756 
	.end_i:
6523 IgorA 757 
	mov dword[eax+GLContext.in_begin],0
5153 IgorA 758 
	ret
759 
endp