kolibrios-gitea/programs/media/FillScr/fillscr.asm
0CodErr 2786c310ab rename fillScr->fillscr
git-svn-id: svn://kolibrios.org@6962 a494cfbc-eb01-0410-851d-a64ba20cac60
2017-09-07 16:27:22 +00:00

156 lines
3.8 KiB
NASM

; to compile: nasm -f bin fillscr.asm -o fillscr ;
; to generate random colors use "fillscr rnd" ;
; otherwise use "filscr r,g,b, r,g,b, r,g,b,..." ;
ORG 0
BITS 32
; ---------------------------- ;
points equ END
POINTS_SIZE equ 108
PARAMS_SIZE equ 256
; ---------------------------- ;
MENUET01 db 'MENUET01'
version dd 1
program.start dd START
program.end dd END
program.memory dd END + POINTS_SIZE + PARAMS_SIZE
program.stack dd 0
program.params dd END + POINTS_SIZE
program.path dd 0
; ---------------------------- ;
points_count dd 0
rnd dd 0
; ---------------------------- ;
START:
mov edi, points
mov esi, [program.params]
cmp [esi], dword "rnd"
jne .not_rnd
mov [points_count], dword POINTS_SIZE / 3
mov ecx, POINTS_SIZE / 2
.next_rnd:
rdtsc
xor eax, edx
xor [rnd], eax
imul eax, [rnd], 134775813
add eax, 2531011
mov [rnd], eax
shr eax, 16
mov [edi], ax
inc edi
inc edi
loop .next_rnd
jmp .exit
.not_rnd:
xor ebp, ebp
.next:
.skip_spaces:
cmp [esi], byte " "
jne .spaces_skipped
inc esi
jmp .skip_spaces
.spaces_skipped:
; cmp [esi], byte 0
; je .exit
mov eax, esi
.find_end_or_comma:
cmp [esi], byte ","
je .end_or_comma_found
cmp [esi], byte 0
je .end_or_comma_found
inc esi
jmp .find_end_or_comma
.end_or_comma_found:
; in eax start of number
; in esi pointer to comma or end after number
mov ecx, esi
sub ecx, eax
xor ebx, ebx
cmp cl, 1
jne .cmp2
xor cl, cl
jmp .1
.cmp2:
cmp cl, 2
jne .cmp3
xor cl, cl
jmp .2
.cmp3:
cmp cl, 3
jne .exit
xor cl, cl
.3:
movzx edx, byte[eax + ecx]
sub dl, 48
shl dl, 2
lea edx, [edx * 4 + edx]
lea edx, [edx * 4 + edx]
add bl, dl
inc ecx
.2:
movzx edx, byte[eax + ecx]
sub dl, 48
shl dl, 1
lea edx, [edx * 4 + edx]
add bl, dl
inc ecx
.1:
movzx edx, byte[eax + ecx]
sub dl, 48
add bl, dl
test ebp, ebp
jnz .cmp_next
mov [edi + 2], bl
jmp .putted
.cmp_next:
cmp ebp, 2
jne .cmp_next1
mov [edi - 2], bl
jmp .putted
.cmp_next1:
mov [edi], bl
.putted:
inc ebp
cmp ebp, 3
jne .not_3
xor ebp, ebp
inc dword[points_count]
.not_3:
inc edi
inc esi
jmp .next
.exit:
; width = height = sqrt(points_count)
mov eax, [points_count]
or edx, -1
@@:
add edx, 2
sub eax, edx
jnle @@
sbb edx, -1
shr edx, 1
; set width, height
mov eax, 15
mov ebx, 1
mov ecx, edx
int 64
; set "stretch"
; mov eax, 15
mov ebx, 4
mov ecx, 2
int 64
; put pixels
; mov eax, 15
mov ebx, 5
mov ecx, points ; BBGGRRBBGGRR...
xor edx, edx
mov esi, [points_count] ; size of data = count * 3
lea esi, [esi * 2 + esi]
int 64
; refresh screen
; mov eax, 15
mov ebx, 3
int 64
; thread terminate
mov eax, -1
int 64
END: