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bezier.s
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[bits 64]
section .data
const_one: dd 1.0
const_one_th: dd 0.0001
const_zero: dd 0.0
const_two: dd 2.0
const_three: dd 3.0
const_four: dd 4.0
const_six: dd 6.0
section .text
global bezier
bezier:
push rbp ;prolog
mov rbp, rsp
push rbx
push r12
push r13
push r14
push r15
sub rsp, 8
mov [rsp-8], rdi
mov r14, rdx
mov r15, rcx
mov r9, 0xFF000000
finit
begin:
cmp rsi, 0
je end
cmp rsi, 2
je two_points
cmp rsi, 3
je three_points
cmp rsi, 4
je four_points
cmp rsi, 5
je five_points
one_point:
xor r10, r10
xor r11, r10
mov r10d, [r14] ;wczytaj wspolrzedna x
sal r10, 2 ;multiply by 4
mov r11d, [r15]
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
mov [rax+4], r9d
mov [rax-4], r9d
mov [rax-3204], r9d
mov [rax-3196], r9d
mov [rax-3200], r9d
mov [rax+3200], r9d
mov [rax+3204], r9d
mov [rax+3196], r9d
jmp end
two_points:
movss xmm0, dword [const_zero] ; to jest t
movss xmm1, dword [const_one_th] ; o tyle zmniejszamy t
cvtsi2ss xmm4, [r14] ;load x0
cvtsi2ss xmm5, [r14+4] ; load x1
cvtsi2ss xmm6, [r15] ; load y0
cvtsi2ss xmm7, [r15+4]; load y1
loop_two_points:
two_points_x:
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm8, xmm3 ; (1-t)
mulss xmm8, xmm4 ; (1-t) * x0
movss xmm9, xmm0 ; t
mulss xmm9, xmm5 ; t * x1
addss xmm8, xmm9
cvtss2si r10, xmm8
two_points_y:
movss xmm8, xmm3 ; (1-t)
mulss xmm8, xmm6 ; (1-t) * y0
movss xmm9, xmm0 ; t
mulss xmm9, xmm7 ; t * y1
addss xmm8, xmm9
cvtss2si r11, xmm8
draw_from_two_points:
sal r10, 2 ;multiply by 4
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
next_two_points:
addss xmm0, xmm1
movss xmm3, [const_one]
cmpss xmm3, xmm0, 2
movq rax, xmm3
cmp rax, 0
je loop_two_points
jmp draw_pressed_points
three_points:
movss xmm0, dword [const_zero] ; to jest t
movss xmm1, dword [const_one_th] ; o tyle zmniejszamy t
loop_three_points:
cvtsi2ss xmm4, [r14] ;load x0
cvtsi2ss xmm5, [r14+4] ; load x1
cvtsi2ss xmm6, [r14+8] ; load x2
three_points_x:
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * x0
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm5 ; (1-t) * t * x1
mulss xmm11, [const_two] ; 2 * (1-t) * t * x1
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm6 ; t * t * x2
addss xmm10, xmm11
cvtss2si r10, xmm10
three_points_y:
cvtsi2ss xmm4, [r15] ;load x0
cvtsi2ss xmm5, [r15+4] ; load x1
cvtsi2ss xmm6, [r15+8] ; load x2
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * y0
movss xmm11, [const_one]
subss xmm11, xmm0 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm5 ; (1-t) * t * x1
mulss xmm11, [const_two] ; 2 * (1-t) * t * y1
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm6 ; t * t * y2
addss xmm10, xmm11
cvtss2si r11, xmm10
draw_from_three_points:
sal r10, 2 ;multiply by 4
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
next_three_points:
addss xmm0, xmm1
movss xmm3, [const_one]
cmpss xmm3, xmm0, 2
movq rax, xmm3
cmp rax, 0
je loop_three_points
jmp draw_pressed_points
four_points:
movss xmm0, dword [const_zero] ; to jest t
movss xmm1, dword [const_one_th] ; o tyle zmniejszamy t
loop_four_points:
cvtsi2ss xmm4, [r14] ;load x0
cvtsi2ss xmm5, [r14+4] ; load x1
cvtsi2ss xmm6, [r14+8] ; load x2
cvtsi2ss xmm7, [r14+12] ; load x3
four_points_x:
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * (1-t) * x0
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * t
mulss xmm11, [const_three] ; 3 * (1-t) * (1-t) * t
mulss xmm11, xmm5 ; 3 * (1-t) * (1-t) * t * x1
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm0 ; (1-t) * t * t
mulss xmm11, [const_three] ; 3 * (1-t) * (1-t) * t
mulss xmm11, xmm6 ; 3 * (1-t) * (1-t) * t * x2
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm0 ; t * t * t
mulss xmm11, xmm7 ; x3 * t * t * t
addss xmm10, xmm11
cvtss2si r10, xmm10
four_points_y:
cvtsi2ss xmm4, [r15] ;load y0
cvtsi2ss xmm5, [r15+4] ; load y1
cvtsi2ss xmm6, [r15+8] ; load y2
cvtsi2ss xmm7, [r15+12] ; load y3
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * (1-t) * y0
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * t
mulss xmm11, [const_three] ; 3 * (1-t) * (1-t) * t
mulss xmm11, xmm5 ; 3 * (1-t) * (1-t) * t * y1
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm0 ; (1-t) * t * t
mulss xmm11, [const_three] ; 3 * (1-t) * (1-t) * t
mulss xmm11, xmm6 ; 3 * (1-t) * (1-t) * t * y2
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm0 ; t * t * t
mulss xmm11, xmm7 ; y3 * t * t * t
addss xmm10, xmm11
cvtss2si r11, xmm10
draw_from_four_points:
sal r10, 2 ;multiply by 4
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
next_four_points:
addss xmm0, xmm1
movss xmm3, [const_one]
cmpss xmm3, xmm0, 2
movq rax, xmm3
cmp rax, 0
je loop_four_points
jmp draw_pressed_points
five_points:
movss xmm0, dword [const_zero] ; to jest t
movss xmm1, dword [const_one_th] ; o tyle zmniejszamy t
loop_five_points:
cvtsi2ss xmm4, [r14] ;load x0
cvtsi2ss xmm5, [r14+4] ; load x1
cvtsi2ss xmm6, [r14+8] ; load x2
cvtsi2ss xmm7, [r14+12] ; load x3
cvtsi2ss xmm8, [r14+16] ; load x4
five_points_x:
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * (1-t) * (1-t) * x0
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * (1-t) * t
mulss xmm11, [const_four] ; 4 * (1-t) * (1-t) * (1-t) * t
mulss xmm11, xmm5 ; 4 * (1-t) * (1-t) * (1-t) * t * x1
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * t
mulss xmm11, xmm0 ; (1-t) * (1-t) * t * t
mulss xmm11, [const_six] ; 6 * (1-t) * (1-t) * t * t
mulss xmm11, xmm6 ; 6 * (1-t) * (1-t) * t * t * x2
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm0 ; (1-t) * t * t
mulss xmm11, xmm0 ; (1-t) * t * t * t
mulss xmm11, [const_four] ; 4 * t * (1-t) * t * t
mulss xmm11, xmm7 ; 4 * (1-t) * t * t * t * x3
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm0 ; t * t * t
mulss xmm11, xmm0 ; t * t * t * t
mulss xmm11, xmm8 ; x4 * t * t * t * t
addss xmm10, xmm11
cvtss2si r10, xmm10
five_points_y:
cvtsi2ss xmm4, [r15] ;load y0
cvtsi2ss xmm5, [r15+4] ; load y1
cvtsi2ss xmm6, [r15+8] ; load y2
cvtsi2ss xmm7, [r15+12] ; load y3
cvtsi2ss xmm8, [r15+16] ; load y4
movss xmm3, [const_one]
subss xmm3, xmm0 ; 1-t
movss xmm10, xmm3 ; (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm10, xmm3 ; (1-t) * (1-t) * (1-t) * (1-t)
mulss xmm10, xmm4 ; (1-t) * (1-t) * (1-t) * (1-t) * y0
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * (1-t) * t
mulss xmm11, [const_four] ; 4 * (1-t) * (1-t) * (1-t) * t
mulss xmm11, xmm5 ; 4 * (1-t) * (1-t) * (1-t) * t * y1
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm3 ; (1-t) * (1-t)
mulss xmm11, xmm0 ; (1-t) * (1-t) * t
mulss xmm11, xmm0 ; (1-t) * (1-t) * t * t
mulss xmm11, [const_six] ; 6 * (1-t) * (1-t) * t * t
mulss xmm11, xmm6 ; 6 * (1-t) * (1-t) * t * t * y2
addss xmm10, xmm11
movss xmm11, xmm3 ; (1-t)
mulss xmm11, xmm0 ; (1-t) * t
mulss xmm11, xmm0 ; (1-t) * t * t
mulss xmm11, xmm0 ; (1-t) * t * t * t
mulss xmm11, [const_four] ; 4 * (1-t) * t * t * t
mulss xmm11, xmm7 ; 4 * (1-t) * t * t * t * y3
addss xmm10, xmm11
movss xmm11, xmm0 ; t
mulss xmm11, xmm0 ; t * t
mulss xmm11, xmm0 ; t * t * t
mulss xmm11, xmm0 ; t * t * t * t
mulss xmm11, xmm8 ; y4 * t * t * t * t
addss xmm10, xmm11
cvtss2si r11, xmm10
draw_from_five_points:
sal r10, 2 ;multiply by 4
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
next_five_points:
addss xmm0, xmm1
movss xmm3, [const_one]
cmpss xmm3, xmm0, 2
movq rax, xmm3
cmp rax, 0
je loop_five_points
draw_pressed_points:
mov r10d, [r14] ;wczytaj wspolrzedna x
sal r10, 2 ;multiply by 4
mov r11d, [r15]
mov rax, 600
sub rax, r11
mov r11, 3200
mul r11
mov r11, rax
add r11, r10 ;obliczony offset
mov rax, [rsp-8]
add rax, r11
mov [rax], r9d
mov [rax+4], r9d
mov [rax-4], r9d
mov [rax-3204], r9d
mov [rax-3196], r9d
mov [rax-3200], r9d
mov [rax+3200], r9d
mov [rax+3204], r9d
mov [rax+3196], r9d
add r14, 4
add r15, 4
dec rsi
cmp rsi, 0
jnz draw_pressed_points
end:
pop r15
pop r14
pop r13
pop r12
pop rbx
mov rsp, rbp ;epilog
pop rbp ;cofniecie esp o 8 i pobranie starego ebp
ret ;skok do adresu ze stosu