kolibrios-gitea/programs/media/scrshoot/gp.inc

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;esi - screen size
;edi - pointer to image
csi_width equ [esi+2]
csi_height equ [esi]
csi_bitspp equ [esi+4]
csi_bytesps equ [esi+6]
copy_screen_to_image:
pusha
xor edx,edx
xor ecx,ecx
xor ebx,ebx
bt dword [use_rect.flags],1
jc copy_area
cmp csi_bitspp,word 24
je .next_str_24
cmp csi_bitspp,word 16
je .next_str_16
.next_str_32:
push edx ebx
xor ebx,ebx
@@:
;push eax
mov eax,[gs:edx]
mov [edi+ecx],ax
shr eax,8
mov [edi+ecx+2],ah
;pop eax
add ecx,3
add edx,4;eax
inc bx
cmp bx,csi_width
jl @b
pop ebx edx
add edx,csi_bytesps
inc bx
cmp bx,csi_height
jl .next_str_32
popa
ret
.next_str_24:
push edx ebx
xor ebx,ebx
@@:
;push eax
mov eax,[gs:edx]
mov [edi+ecx],ax
shr eax,8
mov [edi+ecx+2],ah
;pop eax
add ecx,3
add edx,3;eax
inc bx
cmp bx,csi_width
jl @b
pop ebx edx
add edx,csi_bytesps
inc bx
cmp bx,csi_height
jl .next_str_24
popa
ret
.next_str_16:
push edx ebx
xor ebx,ebx
@@:
;push eax
mov eax,[gs:edx]
shl eax, 3
ror eax, 8
shl ax, 2
ror eax, 8
shl al, 3
mov [edi+ecx+2],al
rol eax, 16
mov [edi+ecx],ax
;pop eax
add ecx,3
add edx,2
inc bx
cmp bx,csi_width
jl @b
pop ebx edx
add edx,csi_bytesps
inc bx
cmp bx,csi_height
jl .next_str_16
popa
ret
copy_area:
mov eax,[scr.bytesps]
mov ebx,eax
movzx ecx,word [rect.top]
mul ecx
movzx ecx,word [rect.width]
shl ecx,2
sub ebx,ecx
movzx ecx,word [rect.left]
shl ecx,2
add eax,ecx
movzx ecx,word [rect.height]
mov edx,eax
.next_str:
movzx esi,word [rect.width]
.next_pixel:
mov eax,[gs:edx]
mov [edi],ax
shr eax,8
mov [edi+2],ah
add edx,4
add edi,3
dec esi
jnz .next_pixel
add edx,ebx
loop .next_str
popa
ret