230 lines
3.8 KiB
NASM
230 lines
3.8 KiB
NASM
;
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; application : Tiny ray tracer
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; compilator : Fasm
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; system : MenuetOS64/KolibriOS
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; author : Maciej Guba aka macgub
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; email : macgub3@wp.pl
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; web : http://macgub.hekko.pl
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timeout equ 3
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XRES equ 500 ; window size
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YRES equ 500
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maxx = XRES
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maxy = YRES
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use32
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org 0x0
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db 'MENUET01' ; 8 byte id
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dd 0x01 ; header version
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dd START ; start of code
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dd I_END ; size of image
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dd I_END ; memory for app
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dd I_END ; esp
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dd 0x0 , 0x0 ; I_Param , I_Icon
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START: ; start of execution
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call draw_window
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still:
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mov eax,23 ; wait here for event
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mov ebx,timeout
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int 0x40
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; mov eax,11 ; check for event no wait
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; int 0x40
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cmp eax,1 ; redraw request ?
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je red
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cmp eax,2 ; key in buffer ?
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je key
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cmp eax,3 ; button in buffer ?
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je button
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jmp noclose
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red: ; redraw
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call draw_window
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jmp still
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key: ; key
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mov eax,2 ; just read it and ignore
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int 0x40
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jmp still
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button: ; button
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mov eax,17 ; get id
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int 0x40
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cmp ah,1 ; button id=1 ?
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jne noclose
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mov eax,-1 ; close this program
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int 0x40
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noclose:
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; mov eax,13
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; mov ebx,20*65536+maxx-25
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; mov ecx,20*65536+maxy-25
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; xor edx,edx
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; int 0x40
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mov edi,screen
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mov ecx,maxx*maxy*3/4
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xor eax,eax
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cld
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rep stosd
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add [deg_counter],1
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cmp [deg_counter],360
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jne @f
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mov [deg_counter],0
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@@:
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fninit
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fld [one_deg]
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fimul [deg_counter]
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fsincos
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fstp [sin]
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fstp [cos]
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mov ecx,MAX_SPHERES ;MAX_LIGHTS
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mov esi,non_rot_sphere ;light
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mov edi,sphere
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.rotary:
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fld dword[esi]
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fsub [xo]
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fmul [cos]
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fld dword[esi+8]
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fsub [zo]
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fmul [sin]
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fchs
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faddp
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fadd [xo] ; top of stack - new 'x'
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fstp dword[edi]
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fld dword[esi+8]
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fsub [zo]
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fmul [cos]
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fld dword[esi]
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fsub dword[xo]
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fmul [sin]
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faddp
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fadd [zo]
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fstp dword[edi+8]
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; fld dword[esi+4]
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; fstp dword[edi+4]
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push dword[esi+4]
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pop dword[edi+4]
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mov dword[edi+12],0.0
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add esi,12
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add edi,16
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sub ecx,1
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jnz .rotary
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mov ecx,MAX_LIGHTS
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mov esi,non_rot_light
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mov edi,light
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.rotary_lights:
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fld dword[esi]
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fsub [xo]
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fmul [cos]
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fld dword[esi+4]
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fsub [yo]
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fmul [sin]
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fchs
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faddp
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fadd [xo] ; top of stack - new 'x'
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fstp dword[edi]
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fld dword[esi]
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fsub [xo]
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fmul [sin]
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fchs
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fld dword[esi+4]
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fsub dword[yo]
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fmul [cos]
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faddp
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fadd [yo]
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fstp dword[edi+4]
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; fld dword[esi+8]
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; fstp dword[edi+8]
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push dword[esi+8]
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pop dword[edi+8]
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mov dword[edi+12],0.0
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add esi,12
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add edi,16
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sub ecx,1
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jnz .rotary_lights
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call main_loop
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mov eax,7
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mov ebx,screen
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mov ecx,maxx*65536+maxy
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xor edx,edx
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int 0x40
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jmp still
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include 'ray.inc'
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; *********************************************
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; ******* WINDOW DEFINITIONS AND DRAW ********
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; *********************************************
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draw_window:
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mov eax,12 ; function 12:tell os about windowdraw
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mov ebx,1 ; 2, end of draw
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int 0x40
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mov eax,48 ; get skin height
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mov ebx,4
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int 0x40
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lea ecx,[eax + (100 shl 16) + maxy+4]
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mov edi,title
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xor eax,eax
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mov ebx,100*65536+maxx+9 ; [x start] *65536 + [x size]
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mov edx,0x74000000 ; window type
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int 0x40
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mov eax,12 ; function 12:tell os about windowdraw
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mov ebx,2 ; 2, end of draw
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int 0x40
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ret
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title db 'Ray tracing',0
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xo dd 0.5
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yo dd 0.5
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zo dd 0.5
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deg_counter dw 0
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one_deg dd 0.017453
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include 'dataray.inc'
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sin dd ?
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cos dd ?
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screen rb XRES * YRES * 3
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mem_stack:
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rb 65536
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I_END:
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