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TinyGL: Added gluDisk. Fixed args in gluCylinder and gluSphere (#223)

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TinyGL:
- Fixed setting of `GL_FRONT_AND_BACK` mode;
- Fixed setting of `GL_SPOT_DIRECTION` angle;
- Optimization of drawing triangles and lines;
- Input parameters are adjusted to the OpenGL standard
  in `gluCylinder` and `gluSphere` functions;
- Added `gluDisk` function (the gluDisk function draws
  a disk-shaped quadric figure);
- Optimize function `calc_buf`.

Flag:
- Added lighting.

info3ds, info3ds_u, test_glu0, test_glu1, test_glu2,
textures0, textures1, textures2:
- Updated programs using `gluCylinder` and `gluSphere`.

Reviewed-on: KolibriOS/kolibrios#223
Reviewed-by: Ivan B <dunkaist@noreply.localhost>
Reviewed-by: Max Logaev <maxlogaev@proton.me>
Co-authored-by: IgorA <aie85playm@gmail.com>
Co-committed-by: IgorA <aie85playm@gmail.com>
This commit is contained in:
IgorA
2025-05-04 20:00:04 +02:00
committed by Max Logaev
parent cd1c2ce969
commit c18da5afae
23 changed files with 1155 additions and 722 deletions
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397
programs/develop/libraries/TinyGL/asm_fork/glu.asm
View File

@@ -6,29 +6,9 @@ struct GLUquadricObj
ErrorFunc dd ? ; Error handler callback function
ends
offs_qobj_DrawStyle equ 0
offs_qobj_Orientation equ 4
offs_qobj_TextureFlag equ 8
offs_qobj_Normals equ 12
offs_qobj_ErrorFunc equ 16
;Так как некоторые извращенческие функции OpenGL воспринимают только параметры
;типа double (8 байт) то придется пихать их в стек макросом glpush
macro glpush GLDoubleVar {
push dword[GLDoubleVar+4]
push dword[GLDoubleVar]
}
;void drawTorus(float rc, int numc, float rt, int numt)
;{
;}
;static void normal3f(GLfloat x, GLfloat y, GLfloat z )
;{
;}
align 4
an360f dd 360.0
fl_0_5 dd 0.5
fl_360 dd 360.0
align 16
proc gluPerspective, fovy:qword, aspect:qword, zNear:qword, zFar:qword
@@ -40,7 +20,7 @@ locals
endl
fldpi
fmul qword[fovy]
fdiv dword[an360f]
fdiv dword[fl_360]
fptan
ffree st0 ;выкидываем 1.0 которая осталось после вычисления тангенса
fincstp
@@ -76,11 +56,11 @@ gluNewQuadric:
stdcall gl_malloc, sizeof.GLUquadricObj
or eax,eax
jz @f
mov dword[eax+offs_qobj_DrawStyle],GLU_FILL
mov dword[eax+offs_qobj_Orientation],GLU_OUTSIDE
mov dword[eax+offs_qobj_TextureFlag],GL_FALSE
mov dword[eax+offs_qobj_Normals],GLU_SMOOTH
mov dword[eax+offs_qobj_ErrorFunc],0 ;NULL
mov dword[eax+GLUquadricObj.DrawStyle],GLU_FILL
mov dword[eax+GLUquadricObj.Orientation],GLU_OUTSIDE
mov dword[eax+GLUquadricObj.TextureFlag],GL_FALSE
mov dword[eax+GLUquadricObj.Normals],GLU_SMOOTH
mov dword[eax+GLUquadricObj.ErrorFunc],0 ;NULL
@@:
ret
@@ -114,7 +94,7 @@ proc gluQuadricDrawStyle uses eax ebx, qobj:dword, drawStyle:dword
jmp .err_q
align 4
@@:
mov dword[eax+offs_qobj_DrawStyle],ebx
mov dword[eax+GLUquadricObj.DrawStyle],ebx
jmp @f
align 4
.err_q:
@@ -139,7 +119,7 @@ proc gluQuadricOrientation uses eax ebx, qobj:dword, orientation:dword
jmp .err_q
align 4
@@:
mov dword[eax+offs_qobj_Orientation],ebx
mov dword[eax+GLUquadricObj.Orientation],ebx
jmp @f
align 4
.err_q:
@@ -159,7 +139,7 @@ proc gluQuadricTexture uses eax ebx, qobj:dword, texture:dword
cmp ebx,GL_FALSE
je @f
@@:
mov dword[eax+offs_qobj_TextureFlag],ebx
mov dword[eax+GLUquadricObj.TextureFlag],ebx
jmp @f
align 4
.err_q:
@@ -169,7 +149,7 @@ align 4
endp
align 16
proc gluCylinder qobj:dword, baseRadius:dword, topRadius:dword, height:dword,\
proc gluCylinder qobj:dword, baseRadius:qword, topRadius:qword, height:qword,\
slices:dword, stacks:dword
locals
da dq ? ;double
@@ -193,7 +173,7 @@ endl
pushad
mov edx,[qobj]
fld1
cmp dword[edx+offs_qobj_Orientation],GLU_INSIDE
cmp dword[edx+GLUquadricObj.Orientation],GLU_INSIDE
jne @f
fchs
@@:
@@ -203,14 +183,12 @@ pushad
fadd st0,st0
fidiv dword[slices]
fstp qword[da] ;da = 2.0*M_PI / slices
mov ebx,[topRadius]
fld qword[ebx]
mov ecx,[baseRadius]
fsub qword[ecx]
fld qword[topRadius]
fsub qword[baseRadius]
fld st0 ;copy: topRadius-baseRadius
fidiv dword[stacks]
fstp qword[dr] ;dr = (topRadius-baseRadius) / stacks
mov eax,[height]
lea eax,[height]
fld qword[eax]
fidiv dword[stacks]
fstp qword[dz] ;dz = height / stacks
@@ -218,7 +196,7 @@ pushad
fdiv qword[eax]
fstp dword[nz] ;nz = (baseRadius-topRadius) / height ; Z component of normal vectors
cmp dword[edx+offs_qobj_DrawStyle],GLU_POINT
cmp dword[edx+GLUquadricObj.DrawStyle],GLU_POINT
jne .else0
stdcall glBegin,GL_POINTS
mov ebx,[slices]
@@ -245,8 +223,7 @@ align 4
call glNormal3f ;x*nsign, y*nsign, nz*nsign
mov dword[z],0.0
mov ecx,[baseRadius]
fld qword[ecx]
fld qword[baseRadius]
fstp qword[r] ;r = baseRadius
mov ecx,[stacks]
inc ecx
@@ -277,16 +254,15 @@ align 4
call glEnd
jmp .end_f
.else0:
cmp dword[edx+offs_qobj_DrawStyle],GLU_LINE
cmp dword[edx+GLUquadricObj.DrawStyle],GLU_LINE
je @f
cmp dword[edx+offs_qobj_DrawStyle],GLU_SILHOUETTE
cmp dword[edx+GLUquadricObj.DrawStyle],GLU_SILHOUETTE
je .else2
jmp .else1
@@:
; Draw rings
mov dword[z],0.0
mov ecx,[baseRadius]
fld qword[ecx]
fld qword[baseRadius]
fstp qword[r] ;r = baseRadius
mov ecx,[stacks]
inc ecx
@@ -342,28 +318,100 @@ align 4
align 4
.else2:
; draw one ring at each end
; if (baseRadius!=0.0) {
lea ecx,[baseRadius]
fld qword[ecx]
ftst
fnstsw ax
ffree st0
fincstp
sahf
je .rad_b0
stdcall glBegin,GL_LINE_LOOP
mov ebx,[slices]
mov dword[i],0
align 4
.cycle_4: ;for (i=0;i<slices;i++)
; {
; x = cos(i*da);
; y = sin(i*da);
; normal3f( x*nsign, y*nsign, nz*nsign );
; glVertex3f( x*baseRadius, y*baseRadius, 0.0 );
; }
cmp [i],ebx
jge .cycle_4_end
fild dword[i]
fmul qword[da]
fld st0
fcos
fstp dword[x] ;x = cos(i*da)
fsin
fstp dword[y] ;y = sin(i*da)
fld dword[nsign]
fmul dword[nz]
fstp dword[esp-4]
fld dword[nsign]
fmul dword[y]
fstp dword[esp-8]
fld dword[nsign]
fmul dword[x]
fstp dword[esp-12]
add esp,-12
call glNormal3f ;x*nsign, y*nsign, nz*nsign
push 0.0
fld qword[ecx]
fmul dword[y]
fstp dword[esp-4]
fld qword[ecx]
fmul dword[x]
fstp dword[esp-8]
add esp,-8
call glVertex3f ;x*baseRadius, y*baseRadius, 0.0
inc dword[i]
jmp .cycle_4
.cycle_4_end:
call glEnd
.rad_b0:
lea ecx,[topRadius]
fld qword[ecx]
ftst
fnstsw ax
ffree st0
fincstp
sahf
je .else2_end
stdcall glBegin,GL_LINE_LOOP
mov ebx,[slices]
mov dword[i],0
align 4
.cycle_5: ;for (i=0;i<slices;i++)
; {
; x = cos(i*da);
; y = sin(i*da);
; normal3f( x*nsign, y*nsign, nz*nsign );
; glVertex3f( x*topRadius, y*topRadius, height );
; }
cmp [i],ebx
jge .cycle_5_end
fild dword[i]
fmul qword[da]
fld st0
fcos
fstp dword[x] ;x = cos(i*da)
fsin
fstp dword[y] ;y = sin(i*da)
fld dword[nsign]
fmul dword[nz]
fstp dword[esp-4]
fld dword[nsign]
fmul dword[y]
fstp dword[esp-8]
fld dword[nsign]
fmul dword[x]
fstp dword[esp-12]
add esp,-12
call glNormal3f ;x*nsign, y*nsign, nz*nsign
fld qword[height]
fstp dword[esp-4]
fld qword[ecx]
fmul dword[y]
fstp dword[esp-8]
fld qword[ecx]
fmul dword[x]
fstp dword[esp-12]
add esp,-12
call glVertex3f ;x*topRadius, y*topRadius, height
inc dword[i]
jmp .cycle_5
.cycle_5_end:
call glEnd
; }
.else2_end:
; draw length lines
stdcall glBegin,GL_LINES
@@ -390,8 +438,7 @@ align 4
sub esp,12
call glNormal3f ;x*nsign, y*nsign, nz*nsign
mov dword[esp-4],0.0
mov ecx,[baseRadius]
fld qword[ecx]
fld qword[baseRadius]
fld st0
fmul dword[y]
fstp dword[esp-8]
@@ -399,11 +446,9 @@ align 4
fstp dword[esp-12]
sub esp,12
call glVertex3f ;x*baseRadius, y*baseRadius, 0.0
mov eax,[height]
fld qword[eax]
fld qword[height]
fstp dword[esp-4]
mov ecx,[topRadius]
fld qword[ecx]
fld qword[topRadius]
fld st0
fmul dword[y]
fstp dword[esp-8]
@@ -419,7 +464,7 @@ align 4
jmp .end_f
align 4
.else1:
cmp dword[edx+offs_qobj_DrawStyle],GLU_FILL
cmp dword[edx+GLUquadricObj.DrawStyle],GLU_FILL
jne .end_f
fld1
fidiv dword[slices]
@@ -453,8 +498,7 @@ align 4
fchs
fstp dword[x2] ;x2 = -sin((i+1)*da)
mov dword[z],0.0
mov ecx,[baseRadius]
fld qword[ecx]
fld qword[baseRadius]
fstp qword[r] ;r = baseRadius
mov dword[tcy],0.0
stdcall glBegin,GL_QUAD_STRIP
@@ -479,7 +523,7 @@ align 4
fstp dword[esp-12]
sub esp,12
call glNormal3f ;x1*nsign, y1*nsign, nz*nsign
cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[edx+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, [tcx],[tcy]
@@:
@@ -504,7 +548,7 @@ align 4
fstp dword[esp-12]
sub esp,12
call glNormal3f ;x2*nsign, y2*nsign, nz*nsign
cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[edx+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
push dword[tcy]
fld dword[tcx]
@@ -535,7 +579,7 @@ align 4
fstp dword[esp-12]
sub esp,12
call glNormal3f ;x2*nsign, y2*nsign, nz*nsign
cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[edx+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, [tcx],[tcy]
@@:
@@ -560,7 +604,7 @@ align 4
fstp dword[esp-12]
sub esp,12
call glNormal3f ;x1*nsign, y1*nsign, nz*nsign
cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[edx+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
push dword[tcy]
fld dword[tcx]
@@ -605,18 +649,164 @@ endp
; Disk (adapted from Mesa)
;void gluDisk(GLUquadricObj *qobj, GLdouble innerRadius, GLdouble outerRadius, GLint slices, GLint loops )
;{
;}
align 16
proc gluDisk uses eax ebx ecx edx esi, qobj:dword,\
innerRadius:qword, outerRadius:qword, slices:dword, loops:dword
locals
a dq ?
da dq ?
dr dd ?
r1 dd ?
r2 dd ?
dtc dd ?
s dd ? ;int
sa dd ?
ca dd ?
endl
;ebx = s
;ecx = l
;esi = slices
mov ecx,[loops]
cmp ecx,1
jl .end_f
mov esi,[slices]
cmp esi,1
jl .end_f
mov edx,[qobj]
cmp dword[edx+GLUquadricObj.DrawStyle],GLU_FILL
jne .no_fill
fld1
cmp dword[edx+GLUquadricObj.Orientation],GLU_OUTSIDE
je @f
fchs
@@:
add esp,-4
fstp dword[esp]
stdcall glNormal3f,0.0,0.0
fldpi
fadd st0,st0
fidiv dword[slices]
fstp qword[da] ;da = 2.0*M_PI / slices
fld qword[outerRadius]
fsub qword[innerRadius]
fild dword[loops]
fdivp st1,st
fstp dword[dr] ;dr = (outerRadius-innerRadius) / loops
; texture of a gluDisk is a cut out of the texture unit square
; x, y in [-outerRadius, +outerRadius]; s, t in [0, 1] (linear mapping)
fld1
fadd st0,st0
fmul qword[outerRadius]
fstp dword[dtc] ;dtc = 2.0*outerRadius
fld qword[innerRadius]
fstp dword[r1]
align 4
.cycle_0: ;for (l=loops;l>0;l--)
fld dword[r1]
fadd dword[dr]
fstp dword[r2] ;r2 = r1 + dr
stdcall glBegin,GL_QUAD_STRIP
xor ebx,ebx
.cycle_1: ;for (s=0;s<=slices;s++)
cmp esi,ebx
jne .u1
fldz
fstp qword[a]
jmp .u2
align 4
.u1:
mov [s],ebx
fild dword[s]
fmul qword[da]
fstp qword[a]
.u2:
fld qword[a]
fld st0
fsin
fstp dword[sa] ;sa = sin(a)
fcos
fstp dword[ca] ;ca = cos(a)
cmp dword[edx+GLUquadricObj.TextureFlag],0
je @f
fld dword[ca]
fmul dword[r2]
fdiv dword[dtc]
fadd dword[fl_0_5]
fstp dword[esp-4]
fld dword[sa]
fmul dword[r2]
fdiv dword[dtc]
fadd dword[fl_0_5]
add esp,-8
fstp dword[esp]
call glTexCoord2f ;0.5+sa*r2/dtc,0.5+ca*r2/dtc
@@:
fld dword[r2]
fmul dword[ca]
fstp dword[esp-4]
fld dword[r2]
fmul dword[sa]
add esp,-8
fstp dword[esp]
call glVertex2f ;r2*sa, r2*ca
cmp dword[edx+GLUquadricObj.TextureFlag],0
je @f
fld dword[ca]
fmul dword[r1]
fdiv dword[dtc]
fadd dword[fl_0_5]
fstp dword[esp-4]
fld dword[sa]
fmul dword[r1]
fdiv dword[dtc]
fadd dword[fl_0_5]
add esp,-8
fstp dword[esp]
call glTexCoord2f ;0.5+sa*r1/dtc,0.5+ca*r1/dtc
@@:
fld dword[r1]
fmul dword[ca]
fstp dword[esp-4]
fld dword[r1]
fmul dword[sa]
add esp,-8
fstp dword[esp]
call glVertex2f ;r1*sa, r1*ca
inc ebx
cmp esi,ebx
jge .cycle_1
.cycle_1_end:
call glEnd
mov eax,[r2]
mov [r1],eax
dec ecx
jnz .cycle_0
jmp .end_f
align 4
.no_fill:
push [loops]
push [slices]
sub esp,8
fldz
fstp qword[esp]
glpush innerRadius
glpush outerRadius
stdcall gluCylinder, [qobj]
.end_f:
ret
endp
;
; Sphere (adapted from Mesa)
;
;input:
; float radius, int slices, int stacks
; double radius, int slices, int stacks
align 16
proc gluSphere qobj:dword, radius:dword, slices:dword, stacks:dword
proc gluSphere qobj:dword, radius:qword, slices:dword, stacks:dword
locals
rho dd ? ;float
drho dd ?
@@ -638,7 +828,7 @@ endl
pushad
mov eax,[qobj]
cmp dword[eax+offs_qobj_Normals],GLU_NONE ;if (qobj.Normals==GLU_NONE)
cmp dword[eax+GLUquadricObj.Normals],GLU_NONE ;if (qobj.Normals==GLU_NONE)
jne .els_0
mov dword[normals],GL_FALSE
jmp @f
@@ -646,7 +836,7 @@ align 4
.els_0:
mov dword[normals],GL_TRUE
@@:
cmp dword[eax+offs_qobj_Orientation],GLU_INSIDE ;if (qobj.Orientation==GLU_INSIDE)
cmp dword[eax+GLUquadricObj.Orientation],GLU_INSIDE ;if (qobj.Orientation==GLU_INSIDE)
jne .els_1
mov dword[nsign],-1.0
jmp @f
@@ -666,7 +856,7 @@ align 4
ffree st0
fincstp
cmp dword[eax+offs_qobj_DrawStyle],GLU_FILL ;if (qobj.DrawStyle==GLU_FILL)
cmp dword[eax+GLUquadricObj.DrawStyle],GLU_FILL ;if (qobj.DrawStyle==GLU_FILL)
jne .if_glu_line
; draw +Z end as a triangle fan
@@ -675,13 +865,13 @@ align 4
jne @f
stdcall glNormal3f, 0.0, 0.0, 1.0
@@:
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, 0.5,1.0
@@:
sub esp,4
fld dword[nsign]
fmul dword[radius]
fmul qword[radius]
fstp dword[esp]
stdcall glVertex3f, 0.0, 0.0 ;, nsign * radius
fld dword[drho]
@@ -728,7 +918,7 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -754,7 +944,7 @@ align 4
fstp dword[d_t] ;1.0 / stacks
mov dword[t],1.0 ; because loop now runs from 0
mov ebx,[stacks]
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je .els_2
mov dword[i],0
mov [imax],ebx
@@ -820,11 +1010,11 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, [s],[t]
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -868,7 +1058,7 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
fld dword[t]
fsub dword[d_t]
@@ -879,7 +1069,7 @@ align 4
fadd dword[d_s]
fstp dword[s]
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -910,7 +1100,7 @@ align 4
jne @f
stdcall glNormal3f, 0.0, 0.0, -1.0
@@:
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, 0.5,0.0
mov dword[s],1.0
@@ -918,7 +1108,7 @@ align 4
mov [t],ebx
@@:
sub esp,4
fld dword[radius]
fld qword[radius]
fchs
fmul dword[nsign]
fstp dword[esp]
@@ -970,14 +1160,14 @@ align 4
fincstp
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
cmp dword[eax+GLUquadricObj.TextureFlag],0 ;if (qobj.TextureFlag)
je @f
stdcall glTexCoord2f, [s],[t]
fld dword[s]
fsub dword[d_s]
fstp dword[s]
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -998,9 +1188,9 @@ align 4
align 4
.if_glu_line:
cmp dword[eax+offs_qobj_DrawStyle],GLU_LINE ;if (qobj.DrawStyle==GLU_LINE)
cmp dword[eax+GLUquadricObj.DrawStyle],GLU_LINE ;if (qobj.DrawStyle==GLU_LINE)
je @f
cmp dword[eax+offs_qobj_DrawStyle],GLU_SILHOUETTE ;if (qobj.DrawStyle==GLU_SILHOUETTE)
cmp dword[eax+GLUquadricObj.DrawStyle],GLU_SILHOUETTE ;if (qobj.DrawStyle==GLU_SILHOUETTE)
je @f
jmp .if_glu_point
align 4
@@ -1056,7 +1246,7 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -1123,7 +1313,7 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]
@@ -1148,7 +1338,7 @@ align 4
align 4
.if_glu_point:
cmp dword[eax+offs_qobj_DrawStyle],GLU_POINT ;if (qobj.DrawStyle==GLU_POINT)
cmp dword[eax+GLUquadricObj.DrawStyle],GLU_POINT ;if (qobj.DrawStyle==GLU_POINT)
jne .end_f
; top and bottom-most points
@@ -1157,7 +1347,10 @@ align 4
jne @f
stdcall glNormal3f, 0.0,0.0,dword[nsign]
@@:
stdcall glVertex3f, 0.0,0.0,dword[radius]
sub esp,4
fld qword[radius]
fstp dword[esp]
stdcall glVertex3f, 0.0,0.0
cmp dword[normals],GL_TRUE
jne @f
sub esp,4
@@ -1167,7 +1360,7 @@ align 4
stdcall glNormal3f, 0.0,0.0 ;,-nsign
@@:
sub esp,4
fld dword[radius]
fld qword[radius]
fchs
fstp dword[esp]
stdcall glVertex3f, 0.0,0.0 ;,-radius
@@ -1220,7 +1413,7 @@ align 4
sub esp,12
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
@@:
fld dword[radius]
fld qword[radius]
fld dword[z]
fmul st0,st1
fstp dword[esp-4]