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align 4

sp128f dd 128.0

align 4

proc glopMaterial uses eax ebx ecx edi esi, context:dword, p:dword

; edi -> GLMaterial *m

	mov eax,[context]

	mov ebx,[p]

	mov ecx,[ebx+4] ;ecx = p[1]

	cmp ecx,GL_FRONT_AND_BACK ;if (mode == GL_FRONT_AND_BACK)

	jne @f

		mov dword[ebx+4],GL_FRONT ;p[1].i=GL_FRONT

		mov edi,ebp

		add edi,12

		stdcall glopMaterial,eax,edi

		mov ecx,GL_BACK

	@@:

	mov edi,eax

	add edi,offs_cont_materials

	cmp ecx,GL_FRONT ;if (mode == GL_FRONT) m=&context.materials[0]

	je @f

		add edi,sizeof.GLMaterial ;else m=&context.materials[1]

	@@:

	mov ecx,4

	mov esi,ebx ;esi = &p

	add esi,12 ;esi = &p[3]

	mov ebx,[ebx+8] ;ebx = p[2]

	cmp ebx,GL_EMISSION

	jne @f

		;add edi,offs_mate_emission ;offs_mate_emission=0

		rep movsd

		jmp .end_f

	@@:

	cmp ebx,GL_AMBIENT

	jne @f

		add edi,offs_mate_ambient

		rep movsd

		jmp .end_f

	@@:

	cmp ebx,GL_DIFFUSE

	jne @f

		add edi,offs_mate_diffuse

		rep movsd

		jmp .end_f

	@@:

	cmp ebx,GL_SPECULAR

	jne @f

		add edi,offs_mate_specular

		rep movsd

		jmp .end_f

	@@:

	cmp ebx,GL_SHININESS

	jne @f

		fld dword[esi]

		add edi,offs_mate_shininess

		movsd

		mov dword[edi],SPECULAR_BUFFER_RESOLUTION

		fdiv dword[sp128f]

		fimul dword[edi]

		fistp dword[edi] ;m.shininess_i = (v[0]/128.0f)*SPECULAR_BUFFER_RESOLUTION

		jmp .end_f

	@@:

	cmp ebx,GL_AMBIENT_AND_DIFFUSE

	jne @f

		add edi,offs_mate_ambient

		rep movsd

		sub esi,16

		;edi = &offs_mate_diffuse

		mov ecx,4

		rep movsd

		jmp .end_f

	@@: ;default

;    assert(0);

	.end_f:

	ret

endp

align 4

proc glopColorMaterial uses eax ebx ecx, context:dword, p:dword

	mov eax,[context]

	mov ebx,[p]

	mov ecx,[ebx+4] ;ecx = p[1]

	mov dword[eax+offs_cont_current_color_material_mode],ecx

	mov ecx,[ebx+8] ;ecx = p[2]

	mov dword[eax+offs_cont_current_color_material_type],ecx

	ret

endp

align 4

proc glopLight context:dword, p:dword

locals

	pos V4

endl

pushad

	mov eax,[context]

	mov ebx,[p]

	mov edx,[ebx+4] ;edx = p[1]

;  assert(edx >= GL_LIGHT0 && edx < GL_LIGHT0+MAX_LIGHTS );

	sub edx,GL_LIGHT0

	imul edx,sizeof.GLLight

	add edx,eax

	add edx,offs_cont_lights

	mov ecx,[ebx+8] ;ecx = p[2]

	cmp ecx,GL_AMBIENT

	jne @f

		mov esi,ebx

		add esi,12

		mov edi,edx

		;add edi,offs_ligh_ambient ;offs_ligh_ambient = 0

		mov ecx,4

		rep movsd ;l.ambient=v

		jmp .end_f

	@@:

	cmp ecx,GL_DIFFUSE

	jne @f

		mov esi,ebx

		add esi,12

		mov edi,edx

		add edi,offs_ligh_diffuse

		mov ecx,4

		rep movsd ;l.diffuse=v

		jmp .end_f

	@@:

	cmp ecx,GL_SPECULAR

	jne @f

		mov esi,ebx

		add esi,12

		mov edi,edx

		add edi,offs_ligh_specular

		mov ecx,4

		rep movsd ;l.specular=v

		jmp .end_f

	@@:

	cmp ecx,GL_POSITION

	jne @f

		mov edi,ebx ;ebx = [ebp+12] = [p] = &p[0]

		add edi,12 ;&p[3]

		mov esi,ebp

		sub esi,16 ;&pos

		stdcall gl_M4_MulV4, esi,dword[eax+offs_cont_matrix_stack_ptr],edi

		mov edi,edx

		add edi,offs_ligh_position

		mov ecx,4

		rep movsd ;l.position=pos

		fld dword[edi-4] ;if(l.position.v[3] == 0)

		ftst

		fstsw ax

		sahf

		jne .end_i

			;mov esi,ebp

			sub esi,16 ;&pos

			mov edi,edx

			add edi,offs_ligh_norm_position

			mov ecx,3

			rep movsd ;l.norm_position=pos[1,2,3]

			;mov edi,edx

			;add edi,offs_ligh_norm_position

			sub edi,12

			stdcall gl_V3_Norm,edi ;&l.norm_position

		.end_i:

		ffree st0

		fincstp

		jmp .end_f

	@@:

	cmp ecx,GL_SPOT_DIRECTION

	jne @f

		mov esi,ebx ;&p[0]

		add esi,12

		mov edi,edx

		add edi,offs_ligh_spot_direction

		mov ecx,3

		rep movsd ;l.spot_direction=v[0,1,2]

		;mov esi,ebx

		;add esi,12

		sub esi,12

		;mov edi,edx

		;add edi,offs_ligh_norm_spot_direction

		add edi,offs_ligh_norm_spot_direction-(offs_ligh_spot_direction+12)

		mov ecx,3

		rep movsd ;l.norm_spot_direction=v[0,1,2]

		add edx,offs_ligh_norm_spot_direction

		stdcall gl_V3_Norm,edx

		jmp .end_f

	@@:

	cmp ecx,GL_SPOT_EXPONENT

	jne @f

		mov ecx,[ebx+12]

		mov [edi+offs_ligh_spot_exponent],ecx ;l.spot_exponent=p[3]

		jmp .end_f

	@@:

	cmp ecx,GL_SPOT_CUTOFF

	jne .end_spot_c

		fld dword[ebp+12] ;float a=v.v[0]

;      assert(a == 180 || (a>=0 && a<=90));

		fst dword[edi+offs_ligh_spot_cutoff] ;l.spot_cutoff=a

		fcom dword[an180f] ;if (a != 180)

		fstsw ax

		sahf

		je @f

			fldpi

			fmulp

			fdiv dword[an180f]

			fcos

			fstp dword[edi+offs_ligh_spot_cutoff] ;l.cos_spot_cutoff=cos(a * M_PI / 180.0)

			jmp .end_f

		@@:

		ffree st0

		fincstp

		jmp .end_f

	.end_spot_c:

	cmp ecx,GL_CONSTANT_ATTENUATION

	jne @f

		mov ecx,[ebx+12]

		mov [edi+offs_ligh_attenuation],ecx ;l->attenuation[0]=p[3]

		jmp .end_f

	@@:

	cmp ecx,GL_LINEAR_ATTENUATION

	jne @f

		mov ecx,[ebx+12]

		mov [edi+offs_ligh_attenuation+4],ecx ;l->attenuation[1]=p[3]

		jmp .end_f

	@@:

	cmp ecx,GL_QUADRATIC_ATTENUATION

	jne @f

		mov ecx,[ebx+12]

		mov [edi+offs_ligh_attenuation+8],ecx ;l->attenuation[2]=p[3]

		jmp .end_f

	@@: ;default:

;    assert(0);

	.end_f:

popad

	ret

endp

align 4

proc glopLightModel uses ebx ecx esi edi, context:dword, p:dword

	mov edi,[context]

	mov ebx,[p]

	mov ebx,[ebx+4]

	mov esi,[ebp+12] ;&p[0]

	add esi,8 ;&p[2]

	cmp ebx,GL_LIGHT_MODEL_AMBIENT

	jne @f

		mov ecx,4

		add edi,offs_cont_ambient_light_model

		rep movsd ;for(i=0;i<4;i++) context.ambient_light_model.v[i]=v[i]

		jmp .end_f

	@@:

	cmp ebx,GL_LIGHT_MODEL_LOCAL_VIEWER

	jne @f

		fld dword[esi] ;st0 = p[2]

		fistp dword[edi+offs_cont_local_light_model]

		jmp .end_f

	@@:

	cmp ebx,GL_LIGHT_MODEL_TWO_SIDE

	jne @f

		fld dword[esi] ;st0 = p[2]

		fistp dword[edi+offs_cont_light_model_two_side]

		jmp .end_f

	@@: ;default:

;    tgl_warning("glopLightModel: illegal pname: 0x%x\n", ebx);

;    //assert(0);

	.end_f:

	ret

endp

macro clampf a, min, max

{

local .o_1

local .o_2

local .end_m

	fld dword a ;if (a<=0.0)

	ftst

	fstsw ax

	sahf

	ja .o_1

		ffree st0

		fincstp

		mov eax,0.0

		jmp .end_m ;return 0.0

	.o_1:

	fld1 ;else if (a>=1.0)

	fcompp

	fstsw ax

	sahf

	ja .o_2

		mov eax,1.0

		jmp .end_m ;return 1.0

	.o_2:

	mov eax,dword a ;else return a

	.end_m:

}

align 4

proc gl_enable_disable_light uses eax ebx ecx, context:dword, light:dword, v:dword

	mov eax,[context]

	mov ebx,[light]

	imul ebx,sizeof.GLLight

	add ebx,eax

	add ebx,offs_cont_lights

	xor ecx,ecx

	cmp dword[ebx+offs_ligh_enabled],0

	jne @f

		not ecx

	@@:

	and ecx,[v]

	or ecx,ecx

	jz @f

		;if (v && !l.enabled)

		mov dword[ebx+offs_ligh_enabled],1

		mov ecx,[eax+offs_cont_first_light]

		mov [ebx+offs_ligh_next],ecx

		mov [eax+offs_cont_first_light],ebx ;context.first_light = l

		mov dword[ebx+offs_ligh_prev],0 ;l.prev = NULL

		jmp .end_f

	@@:

	xor ecx,ecx

	cmp dword[v],0

	jne @f

		not ecx

	@@:

	and ecx,[ebx+offs_ligh_enabled]

	or ecx,ecx

	jz .end_f

		;else if (!v && l.enabled)

		mov dword[ebx+offs_ligh_enabled],0 ;l.enabled = 0

		mov ecx,[ebx+offs_ligh_next]

		cmp dword[ebx+offs_ligh_prev],0 ;if (l.prev == NULL)

		jne .els_0

			mov [eax+offs_cont_first_light],ecx	;context.first_light = l.next

			jmp @f

		.els_0:

			mov eax,[ebx+offs_ligh_prev]

			mov [eax+offs_ligh_next],ecx ;l.prev.next = l.next

		@@:

		cmp dword[ebx+offs_ligh_next],0

		je .end_f

			mov ecx,[ebx+offs_ligh_prev]

			mov eax,[ebx+offs_ligh_next]

			mov [eax+offs_ligh_prev],ecx ;l.next.prev = l.prev

	.end_f:

	ret

endp

align 4

fl_1e_3 dd 1.0e-3

if DEBUG

txt_mate db 'Material',0

txt_colo db 'Color',0

txt_rgba db 'R, G, B',0

end if

; non optimized lightening model

align 4

proc gl_shade_vertex, context:dword, v:dword

locals

	R dd ? ;float ebp-96

	G dd ? ;float ebp-92

	B dd ? ;float ebp-88

	A dd ? ;float ebp-84

	s V3 ;ebp-80

	d V3 ;ebp-68

	tmp dd ? ;float ebp-56

	att dd ? ;float ebp-52

	dot_spot dd ? ;float ebp-48

	lR dd ? ;float ebp-44

	lB dd ? ;float ebp-40

	lG dd ? ;float ebp-36

	twoside dd ? ;int ebp-32

	idx dd ? ;int ebp-28

	n V3 ;ebp-24

	vcoord V3 ;ebp-12

endl

pushad

; ebx -> GLLight *l

; ecx -> GLMaterial *m

; esi -> GLVertex *v

	mov esi,[v]

	mov edx,[context]

	mov ecx,edx

	add ecx,offs_cont_materials ;ecx(m) = &context.materials[0]

	mov eax,[edx+offs_cont_light_model_two_side]

	mov [twoside],eax

	add esi,offs_vert_normal

	mov edi,ebp

	sub edi,24 ;edi = &n

	movsd ;n.X=v.normal.X

	movsd ;n.Y=v.normal.Y

	movsd ;n.Z=v.normal.Z

	mov esi,[v]

if DEBUG ;offs_mate_emission, offs_mate_ambient, offs_mate_specular, offs_mate_diffuse

push ecx

	stdcall dbg_print,txt_mate,txt_nl

	add ecx,offs_mate_emission

	stdcall gl_print_matrix,ecx,1

	add ecx,offs_mate_ambient-offs_mate_emission

	stdcall gl_print_matrix,ecx,1

	add ecx,offs_mate_specular-offs_mate_ambient

	stdcall gl_print_matrix,ecx,1

	add ecx,offs_mate_diffuse-offs_mate_specular

	stdcall gl_print_matrix,ecx,1

pop ecx

end if

	fld dword[edx+offs_cont_ambient_light_model]

	fmul dword[ecx+offs_mate_ambient]

	fadd dword[ecx] ;offs_mate_emission=0

	fstp dword[R] ;R=m.emission.v[0]+m.ambient.v[0]*context.ambient_light_model.v[0]

	fld dword[edx+offs_cont_ambient_light_model+4]

	fmul dword[ecx+offs_mate_ambient+4]

	fadd dword[ecx+offs_mate_emission+4]

	fstp dword[G]

	fld dword[edx+offs_cont_ambient_light_model+8]

	fmul dword[ecx+offs_mate_ambient+8]

	fadd dword[ecx+offs_mate_emission+8]

	fstp dword[B]

	clampf [ecx+offs_mate_diffuse+12],0,1

	mov [A],eax ;A=clampf(m.diffuse.v[3],0,1)

	mov ebx,[edx+offs_cont_first_light]

	.cycle_0: ;for(l=context.first_light;l!=NULL;l=l.next)

		or ebx,ebx

		jz .cycle_0_end

		; ambient

		fld dword[ecx+offs_mate_ambient]

		fmul dword[ebx] ;offs_ligh_ambient=0

		fstp dword[lR] ;lR=l.ambient.v[0] * m.ambient.v[0]

		fld dword[ecx+offs_mate_ambient+4]

		fmul dword[ebx+offs_ligh_ambient+4]

		fstp dword[lG] ;lG=l.ambient.v[1] * m.ambient.v[1]

		fld dword[ecx+offs_mate_ambient+8]

		fmul dword[ebx+offs_ligh_ambient+8]

		fstp dword[lB] ;lB=l.ambient.v[2] * m.ambient.v[2]

		fld dword[ebx+offs_ligh_position+offs_W]

		ftst ;if (l.position.v[3] == 0)

		fstsw ax

		sahf

		jne .els_0

			; light at infinity

			ffree st0 ;l.position.v[3]

			fincstp

			mov eax,[ebx+offs_ligh_position]

			mov [d],eax ;d.X=l.position.v[0]

			mov eax,[ebx+offs_ligh_position+offs_Y]

			mov [d+offs_Y],eax ;d.Y=l.position.v[1]

			mov eax,[ebx+offs_ligh_position+offs_Z]

			mov [d+offs_Z],eax ;d.Z=l.position.v[2]

			mov dword[att],1.0

			jmp .els_0_end

		.els_0:

			; distance attenuation

			ffree st0 ;l.position.v[3]

			fincstp

			fld dword[ebx+offs_ligh_position]

			fsub dword[esi+offs_vert_ec]

			fstp dword[d] ;d.X=l.position.v[0]-v.ec.v[0]

			fld dword[ebx+offs_ligh_position+offs_Y]

			fsub dword[esi+offs_vert_ec+offs_Y]

			fstp dword[d+offs_Y] ;d.Y=l.position.v[1]-v.ec.v[1]

			fld dword[ebx+offs_ligh_position+offs_Z]

			fsub dword[esi+offs_vert_ec+offs_Z]

			fstp dword[d+offs_Z] ;d.Z=l.position.v[2]-v.ec.v[2]

			fld dword[d]

			fmul st0,st0

			fld dword[d+offs_Y]

			fmul st0,st0

			faddp

			fld dword[d+offs_Z]

			fmul st0,st0

			faddp

			fsqrt ;dist=sqrt(d.X^2+d.Y^2+d.Z^2)

			fcom dword[fl_1e_3]

			fstsw ax

			sahf

			jbe @f ;if (dist>1.0e-3)

				fld1

				fdiv st0,st1

				fld dword[d]

				fmul st0,st1

				fstp dword[d]

				fld dword[d+offs_Y]

				fmul st0,st1

				fstp dword[d+offs_Y]

				fld dword[d+offs_Z]

				fmul st0,st1

				fstp dword[d+offs_Z]

				ffree st0 ;1.0/dist

				fincstp

			@@:

			fld dword[ebx+offs_ligh_attenuation+8]

			fmul st0,st1 ;st0 = dist * l.attenuation[2]

			fadd dword[ebx+offs_ligh_attenuation+4]

			fmul st0,st1

			fadd dword[ebx+offs_ligh_attenuation]

			fld1

			fdiv st0,st1

			fstp dword[att] ;att = 1.0f/(l.attenuation[0]+dist*(l.attenuation[1]+dist*l.attenuation[2]))

			ffree st0 ;1.0

			fincstp

			ffree st0 ;dist

			fincstp

		.els_0_end:

		fld dword[d]

		fmul dword[n]

		fld dword[d+offs_Y]

		fmul dword[n+offs_Y]

		faddp

		fld dword[d+offs_Z]

		fmul dword[n+offs_Z]

		faddp ;dot = d.X*n.X+d.Y*n.Y+d.Z*n.Z

		cmp dword[twoside],0 ;if (twoside && dot < 0)

		je @f

		ftst ;if (dot<0)

		fstsw ax

		sahf

		jae @f

			fchs ;dot = -dot

		@@:

		ftst ;if (dot>0)

		fstsw ax

		sahf

		jbe .if0_end

			; diffuse light

			fld dword[ecx+offs_mate_diffuse]

			fmul dword[ebx+offs_ligh_diffuse]

			fmul st0,st1

			fadd dword[lR]

			fstp dword[lR] ;lR+=dot * l.diffuse.v[0] * m.diffuse.v[0]

			fld dword[ecx+offs_mate_diffuse+4]

			fmul dword[ebx+offs_ligh_diffuse+4]

			fmul st0,st1

			fadd dword[lG]

			fstp dword[lG] ;lG+=dot * l.diffuse.v[1] * m.diffuse.v[1]

			fld dword[ecx+offs_mate_diffuse+8]

			fmul dword[ebx+offs_ligh_diffuse+8]

			fmul st0,st1

			fadd dword[lB]

			fstp dword[lB] ;lB+=dot * l.diffuse.v[2] * m.diffuse.v[2]

			ffree st0 ;dot

			fincstp

			; spot light

			fld dword[ebx+offs_ligh_spot_cutoff]

			fcomp dword[an180f] ;if (l.spot_cutoff != 180)

			fstsw ax

			sahf

			je .if1_end

				fld dword[ebx+offs_ligh_norm_spot_direction]

				fmul dword[d]

				fld dword[ebx+offs_ligh_norm_spot_direction+4]

				fmul dword[d+offs_Y]

				faddp

				fld dword[ebx+offs_ligh_norm_spot_direction+8]

				fmul dword[d+offs_Z]

				faddp

				fchs

				fst dword[dot_spot]

				cmp dword[twoside],0 ;if (twoside && dot_spot < 0)

				je @f

				ftst ;if (dot_spot<0)

				fstsw ax

				sahf

				jae @f

					fchs ;dot_spot = -dot_spot

				@@:

				fcom dword[ebx+offs_ligh_cos_spot_cutoff] ;if (dot_spot < l.cos_spot_cutoff)

				fstsw ax

				sahf

				jae .els_1

					; no contribution

					ffree st0 ;dot_spot

					fincstp

					mov ebx,[ebx+offs_ligh_next]

					jmp .cycle_0 ;continue

				.els_1:

					; TODO: optimize

					fld dword[ebx+offs_ligh_spot_exponent]

					ftst ;if (l.spot_exponent > 0)

					fstsw ax

					sahf

					jbe @f

						fxch st1 ;dot_spot <--> l.spot_exponent

						;Вычисляем x^y

						;fld y

						;fld x

						fyl2x ;Стек FPU теперь содержит: st0=z=y*log2(x):

						;Теперь считаем 2**z:

						fld st0 ;Создаем еще одну копию z

						frndint ;Округляем

						fsubr st0,st1  ;st1=z, st0=z-trunc(z)

						f2xm1  ;st1=z, st0=2**(z-trunc(z))-1

						fld1

						faddp  ;st1=z, st0=2**(z-trunc(z))

						fscale ;st1=z, st0=(2**trunc(z))*(2**(z-trunc(z)))=2**t

						fxch st1

						fstp st ;Результат остается на вершине стека st0

						fmul dword[att]

						fstp dword[att] ;att=att*pow(dot_spot,l.spot_exponent)

						jmp .if1_end_f1

					@@:

					ffree st0 ;l.spot_exponent

					fincstp

					.if1_end_f1:

					ffree st0 ;dot_spot

					fincstp

			.if1_end:

			; specular light

			cmp dword[edx+offs_cont_local_light_model],0 ;if (c.local_light_model)

			je .els_2

				mov eax,[esi+offs_vert_ec]

				mov [vcoord],eax ;vcoord.X=v.ec.X

				mov eax,[esi+offs_vert_ec+offs_Y]

				mov [vcoord+offs_Y],eax ;vcoord.Y=v.ec.Y

				mov eax,[esi+offs_vert_ec+offs_Z]

				mov [vcoord+offs_Z],eax ;vcoord.Z=v.ec.Z

				mov eax,ebp

				sub eax,12 ;eax = &vcoord

				stdcall gl_V3_Norm, eax

				fld dword[d]

				fsub dword[vcoord]

				fstp dword[s] ;s.X=d.X-vcoord.X

				fld dword[d+offs_Y]

				fsub dword[vcoord+offs_Y]

				fstp dword[s+offs_Y] ;s.Y=d.Y-vcoord.Y

				fld dword[d+offs_Z]

				fsub dword[vcoord+offs_Z]

				fstp dword[s+offs_Z] ;s.Z=d.Z-vcoord.Z

				jmp .els_2_end

			.els_2:

				mov eax,[d]

				mov [s],eax ;s.X=d.X

				mov eax,[d+offs_Y]

				mov [s+offs_Y],eax ;s.Y=d.Y

				fld1

				fadd dword[d+offs_Z]

				fstp dword[s+offs_Z] ;s.Z=d.Z+1.0

			.els_2_end:

			fld dword[n]

			fmul dword[s]

			fld dword[n+offs_Y]

			fmul dword[s+offs_Y]

			faddp

			fld dword[n+offs_Z]

			fmul dword[s+offs_Z]

			faddp ;dot_spec = n.X*s.X +n.Y*s.Y +n.Z*s.Z

			cmp dword[twoside],0 ;if (twoside && dot_spec < 0)

			je @f

			ftst ;if (dot_spec < 0)

			fstsw ax

			sahf

			jae @f

				fchs ;dot_spec = -dot_spec

			@@:

			ftst ;if (dot_spec > 0)

			fstsw ax

			sahf

			jbe .if0_end

				fld dword[s]

				fmul st0,st0

				fld dword[s+offs_Y]

				fmul st0,st0

				faddp

				fld dword[s+offs_Z]

				fmul st0,st0

				faddp ;st0 = s.X^2 +s.Y^2 +s.Z^2

				fsqrt

				fcom dword[fl_1e_3]

				fstsw ax

				sahf

				jbe @f ;if (tmp > 1.0e-3)

					fdiv st1,st0 ;dot_spec /= tmp

				@@:

				ffree st0 ;tmp

				fincstp

				; TODO: optimize

				; testing specular buffer code

				; dot_spec= pow(dot_spec,m.shininess)

				stdcall specbuf_get_buffer, edx, dword[ecx+offs_mate_shininess_i], dword[ecx+offs_mate_shininess]

				mov edi,eax ;edi = specbuf

				mov dword[idx],SPECULAR_BUFFER_SIZE ;idx = SPECULAR_BUFFER_SIZE

				fld1

				fcomp

				fstsw ax

				fild dword[idx]

				sahf

				jbe @f ;if(dot_spec < 1.0) st0=1 st1=dot_spec

					fmul st0,st1 ;idx *= dot_spec

				@@:

				fistp dword[idx]

				ffree st0 ;dot_spec

				fincstp

				shl dword[idx],2

				add edi,dword[idx]

				fld dword[edi+offs_spec_buf] ;dot_spec = specbuf.buf[idx]

				fld dword[ebx+offs_ligh_specular]

				fmul st0,st1

				fmul dword[ecx+offs_mate_specular]

				fadd dword[lR]

				fstp dword[lR] ;lR+=dot_spec * l.specular.v[0] * m.specular.v[0]

				fld dword[ebx+offs_ligh_specular+4]

				fmul st0,st1

				fmul dword[ecx+offs_mate_specular+4]

				fadd dword[lG]

				fstp dword[lG] ;lG+=dot_spec * l.specular.v[1] * m.specular.v[1]

				fld dword[ebx+offs_ligh_specular+8]

				fmul st0,st1

				fmul dword[ecx+offs_mate_specular+8]

				fadd dword[lB]

				fstp dword[lB] ;lB+=dot_spec * l.specular.v[2] * m.specular.v[2]

		.if0_end:

		ffree st0 ;dot [or] dot_spec

		fincstp

		.if2_end:

		fld dword[att]

		fld dword[lR]

		fmul st0,st1

		fadd dword[R]

		fstp dword[R] ;R += att * lR

		fld dword[lG]

		fmul st0,st1

		fadd dword[G]

		fstp dword[G] ;G += att * lG

		fld dword[lB]

		fmul st0,st1

		fadd dword[B]

		fstp dword[B] ;B += att * lB

		ffree st0 ;att

		fincstp

		mov ebx,[ebx+offs_ligh_next]

		jmp .cycle_0

	.cycle_0_end:

	clampf [R],0,1

	mov [esi+offs_vert_color],eax ;v.color.v[0]=clampf(R,0,1)

	clampf [G],0,1

	mov [esi+offs_vert_color+4],eax ;v.color.v[1]=clampf(G,0,1)

	clampf [B],0,1

	mov [esi+offs_vert_color+8],eax ;v.color.v[2]=clampf(B,0,1)

	mov eax,[A]

	mov [esi+offs_vert_color+12],eax ;v.color.v[3]=A

if DEBUG ;offs_vert_color

push esi

	stdcall dbg_print,txt_colo,txt_nl

	add esi,offs_vert_color

	stdcall gl_print_matrix,esi,1

pop esi

end if

popad

	ret

endp