kolibrios-gitea/programs/demos/plasma/trunk/plasma.asm

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; Originally written by Jarek Pelczar
include "lang.inc"
include "macros.inc"
WND_SIZE_X = 320
WND_SIZE_Y = 200
MEOS_APP_START
CODE
fninit
mov al,40
mov bl,101b
int 0x40
call init_palette
call init_texture
jmp .paint_window
.event_loop:
mov al,23
mov ebx,1
int 0x40
test eax,eax
je .draw_screen
dec eax
je .paint_window
or eax,-1
int 0x40
.draw_screen:
call blit_8_to_32
mov al,7
mov ebx,virtual_screen_32
mov ecx,(WND_SIZE_X shl 16)+WND_SIZE_Y
xor edx,edx
int 0x40
call rotate_pal
jmp .event_loop
.paint_window:
mov al,12
push eax
xor ebx,ebx
inc ebx
int 0x40
xor eax,eax
mov ebx,(100 shl 16)+(WND_SIZE_X+8)
mov ecx,(100 shl 16)+(WND_SIZE_Y+25)
mov edx,0x33000000
mov edi,header
int 0x40
mov al,7
mov ebx,virtual_screen_32
mov ecx,(WND_SIZE_X shl 16)+WND_SIZE_Y
xor edx,edx
int 0x40
pop eax
and ebx,2 ; bit 1 is set
int 0x40
jmp .event_loop
init_palette:
mov edi,_palette
mov ecx,64
xor eax,eax
.color1:
inc ah
mov al,ah
stosb
xor al,al
stosb
stosb
inc edi
loop .color1
mov ecx,64
push ecx
xor eax,eax
.color2:
mov al,63
stosb
mov al,ah
stosb
xor al,al
stosb
inc ah
inc edi
loop .color2
pop ecx
push ecx
xor eax,eax
.color3:
mov al,63
stosb
stosb
mov al,ah
stosb
inc ah
inc edi
loop .color3
pop ecx
mov eax,0x003f3f3f
rep stosd
ret
init_texture:
fldpi
mov [_fpom16],180
fidiv [_fpom16]
fstp [_st_rad]
mov edi,virtual_screen_8
cdq
.itex_vertical:
xor ecx,ecx
fld [_st_rad]
mov [_fpom16],5
fimul [_fpom16]
mov [_fpom16],dx
fimul [_fpom16]
fsin
fmul [_multiplier]
fstp [_fpom32]
.itex_horizontal:
fld [_st_rad]
mov [_fpom16],3
fimul [_fpom16]
mov [_fpom16],cx
fimul [_fpom16]
fsin
fmul [_multiplier]
fadd [_fpom32]
mov [_fpom16],127
fiadd [_fpom16]
fistp [_fpom16]
mov ax,[_fpom16]
inc eax
stosb
inc ecx
cmp ecx,WND_SIZE_X
jne .itex_horizontal
inc edx
cmp edx,WND_SIZE_Y
jne .itex_vertical
ret
rotate_pal:
mov ebx,[_palette+4]
mov edi,_palette+4
mov esi,_palette+8
xor ecx,ecx
mov cl,255
; cld
rep movsd
mov [_palette+1020],ebx
ret
include "graph8.inc"
DATA
_multiplier dd 63.5
header db 'Plasma',0
UDATA
_fpom32 rd 1
_fpom16 rw 1
_st_rad rd 1
_palette: rd 256
virtual_screen_8:
rb WND_SIZE_X*WND_SIZE_Y
virtual_screen_32:
rb WND_SIZE_X*WND_SIZE_Y*3
MEOS_APP_END