XProfan

 $I compatible.inc
cls
long hpic=create("hnewPic",256,256,0)
startPaint hPic
useFont "Arial",26,0,0,0,0
textcolor $FFFFFF,0
drawText 10,10,"Hallo Welt"
endPaint
drawPic hPic,0,0;0

while 1

    filterTest(hPic,%bmpx,%bmpy)
    drawSizedPic hPic,0,0 - width(%hWnd),height(%hWnd);0
    startPaint hPic
    useFont "Arial",26,0,0,0,0
    textcolor $FFFFFF,-1
    drawText sin(getTickCount*0.001)*75+75,sin(getTickCount*0.00077777)*110+110,"Hallo Welt"
    textcolor $0000FF,-1
    drawText -sin(getTickCount*0.001)*75+75,sin(getTickCount*0.00088887)*110+110,"Hallo Welt"
    textcolor $FF0000,-1
    drawText -sin(getTickCount*0.0013)*75+75,-sin(getTickCount*0.00088887)*110+110,"Hallo Welt"
    textcolor $00FF00,-1
    drawText sin(getTickCount*0.0023)*75+75,-sin(getTickCount*0.00022222)*110+110,"Hallo Welt"
    endpaint
    waitinput 10

wend

//mcopysizedbmp 0,0 - 767,255 > 0,0 - width(hWnd),height(hWnd);0
waitinput
end

nProc filterTest

    Parameters h&,_width&,_height&
    var a&=GetPixels(h&,_width&,_height&)
    filter.dith(a&,_width&,_height&)
    filter.blur(a&,_width&,_height&)
    SetPixels(h&,a&,_width&,_height&)
    dispose(a&)

endproc

nProc filter.dith

    parameters a&,_width&,_height&
    var x&=0
    var y&=0
    var c&=0
    var p&=0
    var ww4&=_width&*4

    whileLoop _height&-1,0

        y&=&loop*ww4&

        whileLoop 0,ww4&-4,4

            p&=y&+&loop
            c&=long(a&,p&)

            ifnot rnd(10)

                c&=rgb.mix(c&,rnd($FFFFFF))

            endif

            long a&,p&=c&

        wend

    wend

endproc

nProc filter.blur

    parameters a&,_width&,_height&
    var x&=0
    var y&=0
    var c&=0
    var c2&=0
    var p&=0
    var p1&=0
    var p2&=0
    var p3&=0
    var p4&=0
    var p6&=0
    var p7&=0
    var p8&=0
    var p9&=0
    var r&=0
    var g&=0
    var b&=0
    var ww4&=_width&*4

    whileLoop _height&-1,0

        y&=&loop*ww4&

        whileLoop 0,ww4&-4,4

            p&=y&+&loop
            c&=long(a&,p&)
            c&=rgb.mix(rgb.mix(rgb.mix(rgb.mix(long(a&,p&-4),long(a&,p&+4)),long(a&,p&)),long(a&,p&-ww4&)),long(a&,p&+ww4&))
            p1&=long(a&,p&+ww4&-4)
            p2&=long(a&,p&+ww4&+4)
            p3&=long(a&,p&+ww4&)
            p4&=long(a&,p&-4)
            p6&=long(a&,p&+4)
            p7&=long(a&,p&-ww4&-4)
            p8&=long(a&,p&-ww4&+4)
            p9&=long(a&,p&-ww4&)
            r&=getRValue(p1&)+getRValue(p2&)+getRValue(p3&)+getRValue(p4&)+getRValue(c&)+getRValue(p6&)+getRValue(p7&)+getRValue(p8&)+getRValue(p9&)
            g&=getGValue(p1&)+getGValue(p2&)+getGValue(p3&)+getGValue(p4&)+getGValue(c&)+getGValue(p6&)+getGValue(p7&)+getGValue(p8&)+getGValue(p9&)
            b&=getBValue(p1&)+getBValue(p2&)+getBValue(p3&)+getBValue(p4&)+getBValue(c&)+getBValue(p6&)+getBValue(p7&)+getBValue(p8&)+getBValue(p9&)
            div r&,9
            div g&,9
            div b&,9
            long a&,p&=bgr(r&,g&,b&)

        wend

    wend

endproc

nproc rgb.mix

    parameters c1&,c2&
    var r&=getRValue(c1&)+getRValue(c2&)
    div r&,2
    var g&=getGValue(c1&)+getGValue(c2&)
    div g&,2
    var b&=getBValue(c1&)+getBValue(c2&)
    div b&,2
    return a>(r&,g&,b&)

endproc