;; x, y, r, g, b
putpixel:
	push ebp
	mov ebp, esp

	push eax
	push ebx
	push ecx
	push edi



	; Destination
	std
	mov edi, [mbootinfo.fb_addr]
	mov eax, [mbootinfo.fb_pitch]
	mul dword [ebp+12]   ;y
	add edi, eax

	mov eax, [ebp+8]   ;x
	mul byte [mbootinfo.fb_bytespp]
	dec eax
	add edi, eax

	movzx eax, [mbootinfo.fb_bytespp]
	dec eax
	add edi, eax

	; Blue
	mov ebx, [ebp + 24]
	mov cl, [mbootinfo.fb_bpos]
	shl ebx, cl
	or eax, ebx
	; Green
	mov ebx, [ebp + 20]
	mov cl, [mbootinfo.fb_gpos]
	shl ebx, cl
	or eax, ebx
	; Red
	mov ebx, [ebp + 16]
	mov cl, [mbootinfo.fb_rpos]
	shl ebx, cl
	or eax, ebx

	cmp [mbootinfo.fb_bpp], 24
	je .24bpp
	jne .32bpp
.done:
	pop edi
	pop ecx
	pop ebx
	pop eax

	pop ebp
	ret
.32bpp:
	stosb
	shr eax, 8
	stosb
	shr eax, 8
	stosb
	shr eax, 8
	stosb
	jmp .done
.24bpp:
	;shr eax, 8
	stosb
	shr eax, 8
	stosb
	shr eax, 8
	stosb
	jmp .done

.msg db 10, ":D", 10, 0