forked from KolibriOS/kolibrios
5531c1c36c
fix function 'glFrustum' git-svn-id: svn://kolibrios.org@8059 a494cfbc-eb01-0410-851d-a64ba20cac60
1249 lines
25 KiB
NASM
1249 lines
25 KiB
NASM
struct GLUquadricObj
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DrawStyle dd ? ; GLU_FILL, LINE, SILHOUETTE, or POINT
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Orientation dd ? ; GLU_INSIDE or GLU_OUTSIDE
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TextureFlag dd ? ; Generate texture coords?
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Normals dd ? ; GLU_NONE, GLU_FLAT, or GLU_SMOOTH
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ErrorFunc dd ? ; Error handler callback function
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ends
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offs_qobj_DrawStyle equ 0
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offs_qobj_Orientation equ 4
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offs_qobj_TextureFlag equ 8
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offs_qobj_Normals equ 12
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offs_qobj_ErrorFunc equ 16
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;Так как некоторые извращенческие функции OpenGL воспринимают только параметры
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;типа double (8 байт) то придется пихать их в стек макросом glpush
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macro glpush GLDoubleVar {
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push dword[GLDoubleVar+4]
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push dword[GLDoubleVar]
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}
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;void drawTorus(float rc, int numc, float rt, int numt)
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;{
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;}
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;static void normal3f(GLfloat x, GLfloat y, GLfloat z )
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;{
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;}
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align 4
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an360f dd 360.0
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align 16
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proc gluPerspective, fovy:qword, aspect:qword, zNear:qword, zFar:qword
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locals
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mfW dq ?
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fW dq ?
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mfH dq ?
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fH dq ?
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endl
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fldpi
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fmul qword[fovy]
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fdiv dword[an360f]
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fptan
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ffree st0 ;выкидываем 1.0 которая осталось после вычисления тангенса
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fincstp
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fmul qword[zNear]
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fld st0
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fchs
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fstp qword[mfH]
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fst qword[fH]
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fmul qword[aspect]
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fld st0
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fchs
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fstp qword[mfW]
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fstp qword[fW]
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glpush zFar
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glpush zNear
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glpush fH
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glpush mfH
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glpush fW
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glpush mfW
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call glFrustum
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ret
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endp
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;void gluLookAt(GLdouble eyex, GLdouble eyey, GLdouble eyez,
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; GLdouble centerx, GLdouble centery, GLdouble centerz,
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; GLdouble upx, GLdouble upy, GLdouble upz)
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;{
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;}
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align 16
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gluNewQuadric:
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stdcall gl_malloc, sizeof.GLUquadricObj
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or eax,eax
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jz @f
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mov dword[eax+offs_qobj_DrawStyle],GLU_FILL
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mov dword[eax+offs_qobj_Orientation],GLU_OUTSIDE
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mov dword[eax+offs_qobj_TextureFlag],GL_FALSE
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mov dword[eax+offs_qobj_Normals],GLU_SMOOTH
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mov dword[eax+offs_qobj_ErrorFunc],0 ;NULL
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@@:
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ret
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align 16
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proc gluDeleteQuadric, state:dword
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cmp dword[state],0
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je @f
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stdcall gl_free,[state]
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@@:
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ret
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endp
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;
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; Set the drawing style to be GLU_FILL, GLU_LINE, GLU_SILHOUETTE,
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; or GLU_POINT.
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;
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align 16
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proc gluQuadricDrawStyle uses eax ebx, qobj:dword, drawStyle:dword
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mov eax,[qobj]
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or eax,eax
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jz .err_q
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mov ebx,[drawStyle]
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cmp ebx,GLU_FILL
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je @f
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cmp ebx,GLU_LINE
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je @f
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cmp ebx,GLU_SILHOUETTE
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je @f
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cmp ebx,GLU_POINT
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je @f
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jmp .err_q
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align 4
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@@:
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mov dword[eax+offs_qobj_DrawStyle],ebx
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jmp @f
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align 4
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.err_q:
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stdcall dbg_print,sz_gluQuadricDrawStyle,err_9
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@@:
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ret
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endp
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;
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; Set the orientation to GLU_INSIDE or GLU_OUTSIDE.
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;
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align 16
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proc gluQuadricOrientation uses eax ebx, qobj:dword, orientation:dword
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mov eax,[qobj]
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or eax,eax
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jz .err_q
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mov ebx,[orientation]
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cmp ebx,GLU_INSIDE
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je @f
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cmp ebx,GLU_OUTSIDE
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je @f
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jmp .err_q
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align 4
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@@:
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mov dword[eax+offs_qobj_Orientation],ebx
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jmp @f
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align 4
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.err_q:
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stdcall dbg_print,sz_gluQuadricOrientation,err_9
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@@:
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ret
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endp
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align 16
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proc gluQuadricTexture uses eax ebx, qobj:dword, texture:dword
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mov eax,[qobj]
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or eax,eax
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jz .err_q
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mov ebx,[texture]
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cmp ebx,GL_TRUE
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je @f
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cmp ebx,GL_FALSE
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je @f
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@@:
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mov dword[eax+offs_qobj_TextureFlag],ebx
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jmp @f
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align 4
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.err_q:
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stdcall dbg_print,sz_gluQuadricTexture,err_9
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@@:
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ret
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endp
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align 16
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proc gluCylinder qobj:dword, baseRadius:dword, topRadius:dword, height:dword,\
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slices:dword, stacks:dword
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locals
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da dq ? ;double
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r dq ? ;double
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dr dq ? ;double
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dz dq ? ;double
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x dd ? ;float
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y dd ? ;float
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z dd ? ;float
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nz dd ? ;float
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nsign dd ? ;float
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i dd ? ;GLint
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j dd ? ;GLint
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du dd ? ;float
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dv dd ? ;float
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tcx dd ? ;float
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tcy dd ? ;float
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x2 dd ? ;float
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y2 dd ? ;float
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endl
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pushad
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mov edx,[qobj]
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fld1
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cmp dword[edx+offs_qobj_Orientation],GLU_INSIDE
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jne @f
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fchs
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@@:
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fstp dword[nsign]
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fldpi
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fadd st0,st0
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fidiv dword[slices]
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fstp qword[da] ;da = 2.0*M_PI / slices
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mov ebx,[topRadius]
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fld qword[ebx]
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mov ecx,[baseRadius]
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fsub qword[ecx]
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fld st0 ;copy: topRadius-baseRadius
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fidiv dword[stacks]
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fstp qword[dr] ;dr = (topRadius-baseRadius) / stacks
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mov eax,[height]
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fld qword[eax]
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fidiv dword[stacks]
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fstp qword[dz] ;dz = height / stacks
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fchs
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fdiv qword[eax]
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fstp dword[nz] ;nz = (baseRadius-topRadius) / height ; Z component of normal vectors
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cmp dword[edx+offs_qobj_DrawStyle],GLU_POINT
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jne .else0
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stdcall glBegin,GL_POINTS
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mov ebx,[slices]
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mov dword[i],0
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align 4
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.cycle_0: ;for (i=0;i<slices;i++)
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cmp [i],ebx
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jge .cycle_0_end
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fild dword[i]
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fmul qword[da]
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fld st0
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fcos
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fst dword[x] ;x = cos(i*da)
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fmul dword[nsign]
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fstp dword[esp-12]
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fsin
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fst dword[y] ;y = sin(i*da)
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fmul dword[nsign]
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fstp dword[esp-8]
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fld dword[nz]
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fmul dword[nsign]
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fstp dword[esp-4]
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sub esp,12
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call glNormal3f ;x*nsign, y*nsign, nz*nsign
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mov dword[z],0.0
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mov ecx,[baseRadius]
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fld qword[ecx]
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fstp qword[r] ;r = baseRadius
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mov ecx,[stacks]
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inc ecx
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align 4
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.cycle_1: ;for (j=0;j<=stacks;j++)
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mov eax,[z]
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mov [esp-4],eax
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fld qword[r]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glVertex3f ;x*r, y*r, z
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fld dword[z]
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fadd qword[dz]
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fstp dword[z] ;z += dz
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fld qword[r]
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fadd qword[dr]
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fstp qword[r] ;r += dr
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dec ecx
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jnz .cycle_1
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inc dword[i]
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jmp .cycle_0
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align 4
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.cycle_0_end:
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call glEnd
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jmp .end_f
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.else0:
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cmp dword[edx+offs_qobj_DrawStyle],GLU_LINE
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je @f
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cmp dword[edx+offs_qobj_DrawStyle],GLU_SILHOUETTE
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je .else2
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jmp .else1
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@@:
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; Draw rings
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mov dword[z],0.0
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mov ecx,[baseRadius]
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fld qword[ecx]
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fstp qword[r] ;r = baseRadius
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mov ecx,[stacks]
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inc ecx
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align 4
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.cycle_2: ;for (j=0;j<=stacks;j++)
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stdcall glBegin,GL_LINE_LOOP
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mov ebx,[slices]
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mov dword[i],0
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align 4
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.cycle_3: ;for (i=0;i<slices;i++)
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cmp [i],ebx
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jge .cycle_3_end
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fild dword[i]
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fmul qword[da]
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fld st0
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fcos
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fst dword[x] ;x = cos(i*da)
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fmul dword[nsign]
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fstp dword[esp-12]
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fsin
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fst dword[y] ;y = sin(i*da)
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fmul dword[nsign]
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fstp dword[esp-8]
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fld dword[nz]
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fmul dword[nsign]
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fstp dword[esp-4]
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sub esp,12
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call glNormal3f ;x*nsign, y*nsign, nz*nsign
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mov eax,[z]
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mov [esp-4],eax
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fld qword[r]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glVertex3f ;x*r, y*r, z
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inc dword[i]
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jmp .cycle_3
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align 4
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.cycle_3_end:
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call glEnd
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fld dword[z]
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fadd qword[dz]
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fstp dword[z] ;z += dz
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fld qword[r]
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fadd qword[dr]
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fstp qword[r] ;r += dr
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dec ecx
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jnz .cycle_2
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jmp .else2_end
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align 4
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.else2:
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; draw one ring at each end
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; if (baseRadius!=0.0) {
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stdcall glBegin,GL_LINE_LOOP
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align 4
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.cycle_4: ;for (i=0;i<slices;i++)
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; {
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; x = cos(i*da);
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; y = sin(i*da);
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; normal3f( x*nsign, y*nsign, nz*nsign );
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; glVertex3f( x*baseRadius, y*baseRadius, 0.0 );
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; }
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call glEnd
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stdcall glBegin,GL_LINE_LOOP
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align 4
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.cycle_5: ;for (i=0;i<slices;i++)
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; {
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; x = cos(i*da);
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; y = sin(i*da);
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; normal3f( x*nsign, y*nsign, nz*nsign );
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; glVertex3f( x*topRadius, y*topRadius, height );
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; }
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call glEnd
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; }
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.else2_end:
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; draw length lines
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stdcall glBegin,GL_LINES
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mov ebx,[slices]
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mov dword[i],0
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align 4
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.cycle_6: ;for (i=0;i<slices;i++)
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cmp [i],ebx
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jge .cycle_6_end
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fild dword[i]
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fmul qword[da]
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fld st0
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fcos
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fst dword[x] ;x = cos(i*da)
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fmul dword[nsign]
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fstp dword[esp-12]
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fsin
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fst dword[y] ;y = sin(i*da)
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fmul dword[nsign]
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fstp dword[esp-8]
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fld dword[nz]
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fmul dword[nsign]
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fstp dword[esp-4]
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sub esp,12
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call glNormal3f ;x*nsign, y*nsign, nz*nsign
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mov dword[esp-4],0.0
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mov ecx,[baseRadius]
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fld qword[ecx]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glVertex3f ;x*baseRadius, y*baseRadius, 0.0
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mov eax,[height]
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fld qword[eax]
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fstp dword[esp-4]
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mov ecx,[topRadius]
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fld qword[ecx]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glVertex3f ;x*topRadius, y*topRadius, height
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inc dword[i]
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jmp .cycle_6
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align 4
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.cycle_6_end:
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call glEnd
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jmp .end_f
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align 4
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.else1:
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cmp dword[edx+offs_qobj_DrawStyle],GLU_FILL
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jne .end_f
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fld1
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fidiv dword[slices]
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fstp dword[du] ;du = 1.0 / slices
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fld1
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fidiv dword[stacks]
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fstp dword[dv] ;dv = 1.0 / stacks
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mov dword[tcx],0.0
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mov dword[tcy],0.0
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mov ebx,[slices]
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mov dword[i],0
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align 4
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.cycle_7: ;for (i=0;i<slices;i++)
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cmp [i],ebx
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jge .cycle_7_end
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fild dword[i]
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fmul qword[da]
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fld st0
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fcos
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fstp dword[y] ;y1 = cos(i*da)
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fsin
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fchs
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fstp dword[x] ;x1 = -sin(i*da)
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inc dword[i]
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fild dword[i]
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fmul qword[da]
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fld st0
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fcos
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fstp dword[y2] ;y2 = cos((i+1)*da)
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fsin
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fchs
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fstp dword[x2] ;x2 = -sin((i+1)*da)
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mov dword[z],0.0
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mov ecx,[baseRadius]
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fld qword[ecx]
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fstp qword[r] ;r = baseRadius
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mov dword[tcy],0.0
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stdcall glBegin,GL_QUAD_STRIP
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mov ecx,[stacks]
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inc ecx
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align 4
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.cycle_8: ;for (j=0;j<=stacks;j++)
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fld dword[nsign]
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ftst
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fstsw ax
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sahf
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jbe .else3
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;if (nsign>0.0)
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fld st0
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fmul dword[nz]
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fstp dword[esp-4]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glNormal3f ;x1*nsign, y1*nsign, nz*nsign
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cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
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je @f
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stdcall glTexCoord2f, [tcx],[tcy]
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@@:
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mov eax,[z]
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mov [esp-4],eax
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fld qword[r]
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fld st0
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fmul dword[y]
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fstp dword[esp-8]
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fmul dword[x]
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fstp dword[esp-12]
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sub esp,12
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call glVertex3f ;x1*r, y1*r, z
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fld dword[nsign]
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fld st0
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fmul dword[nz]
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fstp dword[esp-4]
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fld st0
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fmul dword[y2]
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fstp dword[esp-8]
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fmul dword[x2]
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fstp dword[esp-12]
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sub esp,12
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call glNormal3f ;x2*nsign, y2*nsign, nz*nsign
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cmp dword[edx+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
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je @f
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push dword[tcy]
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fld dword[tcx]
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fadd dword[du]
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fstp dword[esp-4]
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sub esp,4
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call glTexCoord2f ;tcx+du, tcy
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@@:
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mov eax,[z]
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mov [esp-4],eax
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fld qword[r]
|
|
fld st0
|
|
fmul dword[y2]
|
|
fstp dword[esp-8]
|
|
fmul dword[x2]
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x2*r, y2*r, z
|
|
jmp .else3_end
|
|
.else3:
|
|
fld st0
|
|
fmul dword[nz]
|
|
fstp dword[esp-4]
|
|
fld st0
|
|
fmul dword[y2]
|
|
fstp dword[esp-8]
|
|
fmul dword[x2]
|
|
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)
|
|
je @f
|
|
stdcall glTexCoord2f, [tcx],[tcy]
|
|
@@:
|
|
mov eax,[z]
|
|
mov [esp-4],eax
|
|
fld qword[r]
|
|
fld st0
|
|
fmul dword[y2]
|
|
fstp dword[esp-8]
|
|
fmul dword[x2]
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x2*r, y2*r, z
|
|
fld dword[nsign]
|
|
fld st0
|
|
fmul dword[nz]
|
|
fstp dword[esp-4]
|
|
fld st0
|
|
fmul dword[y]
|
|
fstp dword[esp-8]
|
|
fmul dword[x]
|
|
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)
|
|
je @f
|
|
push dword[tcy]
|
|
fld dword[tcx]
|
|
fadd dword[du]
|
|
fstp dword[esp-4]
|
|
sub esp,4
|
|
call glTexCoord2f ;tcx+du, tcy
|
|
@@:
|
|
mov eax,[z]
|
|
mov [esp-4],eax
|
|
fld qword[r]
|
|
fld st0
|
|
fmul dword[y]
|
|
fstp dword[esp-8]
|
|
fmul dword[x]
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x1*r, y1*r, z
|
|
.else3_end:
|
|
fld dword[z]
|
|
fadd qword[dz]
|
|
fstp dword[z] ;z += dz
|
|
fld qword[r]
|
|
fadd qword[dr]
|
|
fstp qword[r] ;r += dr
|
|
fld dword[tcy]
|
|
fadd dword[dv]
|
|
fstp dword[tcy] ;tcy += dv
|
|
dec ecx
|
|
jnz .cycle_8
|
|
call glEnd
|
|
fld dword[tcx]
|
|
fadd dword[du]
|
|
fstp dword[tcx] ;tcx += du
|
|
jmp .cycle_7
|
|
align 4
|
|
.cycle_7_end:
|
|
.end_f:
|
|
popad
|
|
ret
|
|
endp
|
|
|
|
; Disk (adapted from Mesa)
|
|
|
|
;void gluDisk(GLUquadricObj *qobj, GLdouble innerRadius, GLdouble outerRadius, GLint slices, GLint loops )
|
|
;{
|
|
;}
|
|
|
|
;
|
|
; Sphere (adapted from Mesa)
|
|
;
|
|
|
|
;input:
|
|
; float radius, int slices, int stacks
|
|
align 16
|
|
proc gluSphere qobj:dword, radius:dword, slices:dword, stacks:dword
|
|
locals
|
|
rho dd ? ;float
|
|
drho dd ?
|
|
theta dd ?
|
|
dtheta dd ?
|
|
x dd ? ;float
|
|
y dd ? ;float
|
|
z dd ? ;float
|
|
s dd ? ;float
|
|
t dd ? ;float
|
|
d_s dd ? ;float
|
|
d_t dd ? ;float
|
|
i dd ? ;int
|
|
j dd ? ;int
|
|
imax dd ? ;int
|
|
normals dd ? ;int
|
|
nsign dd ? ;float
|
|
endl
|
|
pushad
|
|
|
|
mov eax,[qobj]
|
|
cmp dword[eax+offs_qobj_Normals],GLU_NONE ;if (qobj.Normals==GLU_NONE)
|
|
jne .els_0
|
|
mov dword[normals],GL_FALSE
|
|
jmp @f
|
|
align 4
|
|
.els_0:
|
|
mov dword[normals],GL_TRUE
|
|
@@:
|
|
cmp dword[eax+offs_qobj_Orientation],GLU_INSIDE ;if (qobj.Orientation==GLU_INSIDE)
|
|
jne .els_1
|
|
mov dword[nsign],-1.0
|
|
jmp @f
|
|
align 4
|
|
.els_1:
|
|
mov dword[nsign],1.0
|
|
@@:
|
|
|
|
fldpi
|
|
fidiv dword[stacks]
|
|
fstp dword[drho]
|
|
fld1
|
|
fldpi
|
|
fscale
|
|
fidiv dword[slices]
|
|
fstp dword[dtheta]
|
|
ffree st0
|
|
fincstp
|
|
|
|
cmp dword[eax+offs_qobj_DrawStyle],GLU_FILL ;if (qobj.DrawStyle==GLU_FILL)
|
|
jne .if_glu_line
|
|
|
|
; draw +Z end as a triangle fan
|
|
stdcall glBegin,GL_TRIANGLE_FAN
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
stdcall glNormal3f, 0.0, 0.0, 1.0
|
|
@@:
|
|
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
|
|
je @f
|
|
stdcall glTexCoord2f, 0.5,1.0
|
|
@@:
|
|
sub esp,4
|
|
fld dword[nsign]
|
|
fmul dword[radius]
|
|
fstp dword[esp]
|
|
stdcall glVertex3f, 0.0, 0.0 ;, nsign * radius
|
|
fld dword[drho]
|
|
fcos
|
|
fmul dword[nsign]
|
|
fstp dword[z] ;z = nsign * cos(drho)
|
|
mov dword[j],0
|
|
mov ecx,[slices]
|
|
align 4
|
|
.cycle_0: ;for (j=0;j<=slices;j++)
|
|
cmp dword[j],ecx
|
|
jg .cycle_0_end
|
|
fld dword[drho]
|
|
fsin
|
|
je @f
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
jmp .t0_end
|
|
align 4
|
|
@@:
|
|
fldz
|
|
.t0_end:
|
|
fst dword[theta] ;theta = (j==slices) ? 0.0 : j * dtheta
|
|
fsin
|
|
fchs
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = -sin(theta) * sin(drho)
|
|
fld dword[theta]
|
|
fcos
|
|
fmulp
|
|
fstp dword[y] ;y = cos(theta) * sin(drho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
inc dword[j]
|
|
jmp .cycle_0
|
|
align 4
|
|
.cycle_0_end:
|
|
call glEnd
|
|
|
|
fld1
|
|
fidiv dword[slices]
|
|
fstp dword[d_s] ;1.0 / slices
|
|
fld1
|
|
fidiv dword[stacks]
|
|
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)
|
|
je .els_2
|
|
mov dword[i],0
|
|
mov [imax],ebx
|
|
jmp @f
|
|
align 4
|
|
.els_2:
|
|
mov dword[i],1
|
|
dec ebx
|
|
mov [imax],ebx
|
|
@@:
|
|
|
|
; draw intermediate stacks as quad strips
|
|
mov ebx,[imax]
|
|
align 4
|
|
.cycle_1: ;for (i=imin;i<imax;i++)
|
|
cmp dword[i],ebx
|
|
jge .cycle_1_end
|
|
fild dword[i]
|
|
fmul dword[drho]
|
|
fstp dword[rho] ;rho = i * drho
|
|
stdcall glBegin,GL_QUAD_STRIP
|
|
mov dword[s],0.0
|
|
mov dword[j],0
|
|
align 4
|
|
.cycle_2: ;for (j=0;j<=slices;j++)
|
|
cmp dword[j],ecx
|
|
jg .cycle_2_end
|
|
fld dword[rho]
|
|
fsin
|
|
je @f
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
jmp .t1_end
|
|
align 4
|
|
@@:
|
|
fldz
|
|
.t1_end:
|
|
fst dword[theta] ;theta = (j==slices) ? 0.0 : j * dtheta
|
|
fsin
|
|
fchs
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = -sin(theta) * sin(rho)
|
|
fld dword[theta]
|
|
fcos
|
|
fmulp
|
|
fstp dword[y] ;y = cos(theta) * sin(rho)
|
|
fld dword[rho]
|
|
fcos
|
|
fmul dword[nsign]
|
|
fstp dword[z] ;z = nsign * cos(rho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
|
|
je @f
|
|
stdcall glTexCoord2f, [s],[t]
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
fld dword[rho]
|
|
fadd dword[drho]
|
|
fsin ;st0 = sin(rho+drho)
|
|
fld dword[theta]
|
|
fsin
|
|
fchs
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = -sin(theta) * sin(rho+drho)
|
|
fld dword[theta]
|
|
fcos
|
|
fmulp
|
|
fstp dword[y] ;y = cos(theta) * sin(rho+drho)
|
|
fld dword[rho]
|
|
fadd dword[drho]
|
|
fcos
|
|
fmul dword[nsign]
|
|
fstp dword[z] ;z = nsign * cos(rho+drho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
|
|
je @f
|
|
fld dword[t]
|
|
fsub dword[d_t]
|
|
fstp dword[esp-4]
|
|
sub esp,4
|
|
stdcall glTexCoord2f, [s] ;,t-dt
|
|
fld dword[s]
|
|
fadd dword[d_s]
|
|
fstp dword[s]
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
inc dword[j]
|
|
jmp .cycle_2
|
|
align 4
|
|
.cycle_2_end:
|
|
call glEnd
|
|
fld dword[t]
|
|
fsub dword[d_t]
|
|
fstp dword[t]
|
|
inc dword[i]
|
|
jmp .cycle_1
|
|
align 4
|
|
.cycle_1_end:
|
|
|
|
; draw -Z end as a triangle fan
|
|
stdcall glBegin,GL_TRIANGLE_FAN
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
stdcall glNormal3f, 0.0, 0.0, -1.0
|
|
@@:
|
|
cmp dword[eax+offs_qobj_TextureFlag],0 ;if (qobj.TextureFlag)
|
|
je @f
|
|
stdcall glTexCoord2f, 0.5,0.0
|
|
mov dword[s],1.0
|
|
mov ebx,[d_t]
|
|
mov [t],ebx
|
|
@@:
|
|
sub esp,4
|
|
fld dword[radius]
|
|
fchs
|
|
fmul dword[nsign]
|
|
fstp dword[esp]
|
|
stdcall glVertex3f, 0.0, 0.0 ;, -radius*nsign
|
|
fldpi
|
|
fsub dword[drho]
|
|
fst dword[rho]
|
|
fcos
|
|
fmul dword[nsign]
|
|
fstp dword[z] ;z = nsign * cos(rho)
|
|
mov [j],ecx
|
|
align 4
|
|
.cycle_3: ;for (j=slices;j>=0;j--)
|
|
cmp dword[j],0
|
|
jl .cycle_3_end
|
|
fld dword[rho]
|
|
fsin
|
|
je @f
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
jmp .t2_end
|
|
align 4
|
|
@@:
|
|
fldz
|
|
.t2_end:
|
|
fst dword[theta] ;theta = (j==slices) ? 0.0 : j * dtheta
|
|
fsin
|
|
fchs
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = -sin(theta) * sin(rho)
|
|
fld dword[theta]
|
|
fcos
|
|
fmulp
|
|
fstp dword[y] ;y = cos(theta) * sin(rho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmul st0,st1
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
ffree st0
|
|
fincstp
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
cmp dword[eax+offs_qobj_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 dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
dec dword[j]
|
|
jmp .cycle_3
|
|
align 4
|
|
.cycle_3_end:
|
|
call glEnd
|
|
jmp .end_f
|
|
|
|
align 4
|
|
.if_glu_line:
|
|
cmp dword[eax+offs_qobj_DrawStyle],GLU_LINE ;if (qobj.DrawStyle==GLU_LINE)
|
|
je @f
|
|
cmp dword[eax+offs_qobj_DrawStyle],GLU_SILHOUETTE ;if (qobj.DrawStyle==GLU_SILHOUETTE)
|
|
je @f
|
|
jmp .if_glu_point
|
|
align 4
|
|
@@:
|
|
|
|
; draw stack lines
|
|
mov dword[i],1
|
|
mov ebx,[stacks]
|
|
mov ecx,[slices]
|
|
align 4
|
|
.cycle_4: ;for (i=1;i<stacks;i++)
|
|
cmp dword[i],ebx
|
|
jge .cycle_4_end
|
|
; stack line at i==stacks-1 was missing here
|
|
|
|
fild dword[i]
|
|
fmul dword[drho]
|
|
fstp dword[rho] ;rho = i * drho
|
|
stdcall glBegin,GL_LINE_LOOP
|
|
mov dword[j],0
|
|
align 4
|
|
.cycle_5: ;for (j=0;j<slices;j++)
|
|
cmp dword[j],ecx
|
|
jge .cycle_5_end
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
fst dword[theta] ;theta = j * dtheta;
|
|
fcos
|
|
fld dword[rho]
|
|
fsin
|
|
fxch ;толкаем sin(rho) в st1
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = cos(theta) * sin(rho)
|
|
fld dword[theta]
|
|
fsin
|
|
fmulp ;множим на sin(rho) ранее записанный в st1
|
|
fstp dword[y] ;y = sin(theta) * sin(rho)
|
|
fld dword[rho]
|
|
fcos
|
|
fstp dword[z] ;z = cos(rho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
inc dword[j]
|
|
jmp .cycle_5
|
|
align 4
|
|
.cycle_5_end:
|
|
call glEnd
|
|
inc dword[i]
|
|
jmp .cycle_4
|
|
align 4
|
|
.cycle_4_end:
|
|
|
|
; draw slice lines
|
|
mov dword[j],0
|
|
align 4
|
|
.cycle_6: ;for (j=0;j<slices;j++)
|
|
cmp dword[j],ecx
|
|
jge .cycle_6_end
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
fstp dword[theta] ;theta = j * dtheta;
|
|
stdcall glBegin,GL_LINE_STRIP
|
|
mov dword[i],0
|
|
align 4
|
|
.cycle_7: ;for (i=0;i<=stacks;i++)
|
|
cmp dword[i],ebx
|
|
jg .cycle_7_end
|
|
fild dword[i]
|
|
fmul dword[drho]
|
|
fst dword[rho] ;rho = i * drho
|
|
fsin
|
|
fld dword[theta]
|
|
fcos
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = cos(theta) * sin(rho)
|
|
fld dword[theta]
|
|
fsin
|
|
fmulp
|
|
fstp dword[y] ;y = sin(theta) * sin(rho)
|
|
fld dword[rho]
|
|
fcos
|
|
fstp dword[z] ;z = cos(rho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
inc dword[i]
|
|
jmp .cycle_7
|
|
align 4
|
|
.cycle_7_end:
|
|
call glEnd
|
|
inc dword[j]
|
|
jmp .cycle_6
|
|
align 4
|
|
.cycle_6_end:
|
|
jmp .end_f
|
|
|
|
align 4
|
|
.if_glu_point:
|
|
cmp dword[eax+offs_qobj_DrawStyle],GLU_POINT ;if (qobj.DrawStyle==GLU_POINT)
|
|
jne .end_f
|
|
|
|
; top and bottom-most points
|
|
stdcall glBegin,GL_POINTS
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
stdcall glNormal3f, 0.0,0.0,dword[nsign]
|
|
@@:
|
|
stdcall glVertex3f, 0.0,0.0,dword[radius]
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
sub esp,4
|
|
fld dword[nsign]
|
|
fchs
|
|
fstp dword[esp]
|
|
stdcall glNormal3f, 0.0,0.0 ;,-nsign
|
|
@@:
|
|
sub esp,4
|
|
fld dword[radius]
|
|
fchs
|
|
fstp dword[esp]
|
|
stdcall glVertex3f, 0.0,0.0 ;,-radius
|
|
|
|
; loop over stacks
|
|
mov dword[i],1
|
|
mov ebx,[stacks]
|
|
mov ecx,[slices]
|
|
align 4
|
|
.cycle_8: ;for (i=1;i<stacks;i++)
|
|
cmp dword[i],ebx
|
|
jge .cycle_8_end
|
|
fild dword[i]
|
|
fmul dword[drho]
|
|
fstp dword[rho] ;rho = i * drho
|
|
|
|
mov dword[j],0
|
|
align 4
|
|
.cycle_9: ;for (j=0;j<slices;j++)
|
|
cmp dword[j],ecx
|
|
jge .cycle_9_end
|
|
fild dword[j]
|
|
fmul dword[dtheta]
|
|
fst dword[theta] ;theta = j * dtheta;
|
|
fcos
|
|
fld dword[rho]
|
|
fsin
|
|
fxch ;толкаем sin(rho) в st1
|
|
fmul st0,st1
|
|
fstp dword[x] ;x = cos(theta) * sin(rho)
|
|
fld dword[theta]
|
|
fsin
|
|
fmulp ;множим на sin(rho) ранее записанный в st1
|
|
fstp dword[y] ;y = sin(theta) * sin(rho)
|
|
fld dword[rho]
|
|
fcos
|
|
fstp dword[z] ;z = cos(rho)
|
|
cmp dword[normals],GL_TRUE
|
|
jne @f
|
|
fld dword[nsign]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
stdcall glNormal3f ;x*nsign, y*nsign, z*nsign
|
|
@@:
|
|
fld dword[radius]
|
|
fld dword[z]
|
|
fmul st0,st1
|
|
fstp dword[esp-4]
|
|
fld dword[y]
|
|
fmul st0,st1
|
|
fstp dword[esp-8]
|
|
fld dword[x]
|
|
fmulp
|
|
fstp dword[esp-12]
|
|
sub esp,12
|
|
call glVertex3f ;x*radius, y*radius, z*radius
|
|
inc dword[j]
|
|
jmp .cycle_9
|
|
align 4
|
|
.cycle_9_end:
|
|
inc dword[i]
|
|
jmp .cycle_8
|
|
align 4
|
|
.cycle_8_end:
|
|
call glEnd
|
|
|
|
.end_f:
|
|
popad
|
|
ret
|
|
endp
|