Purple Border on Image - Why?

Hi All,

Can anyone please explain to me why I have a purple border around an image if I dont use the flag MIPMAPPEDIMAGE?



Ive read that MIPMAPPEDIMAGE requires more memory, so how can I remove this purple border without this flag?

Here is some test code:

SuperStrict

Framework BRL.GLMax2D
Import BRL.PNGLoader

SetGraphicsDriver GLMax2DDriver()


Const Screenwidth% = 320
Const Screenheight% = 240

Graphics Screenwidth, Screenheight,0
AutoMidHandle True

Local testfile$ = "gripe.run_right.png"
Local width% = 32
Local height% = 32
Local startframe% =0
Local maxframes% = 8
Local mipmappedimg:TImage = LoadAnimImage(testfile , width , height , startframe , maxframes , MIPMAPPEDIMAGE) 
Local defaultimg:TImage = LoadAnimImage(testfile, width, height, startframe , maxframes, -1)
Local filteredimg:TImage = LoadAnimImage(testfile , width , height , startframe , maxframes , FILTEREDIMAGE) 

Local frame% = 0
Local framedelay%
Local x# = Screenwidth / 2
Local y# = Screenheight / 2 - 64

Local start#
Local endtime#
Local delta#

SetClsColor 0,0,255
SetScale 2,2
Repeat

	delta = (endtime/100) - (start/100)
	 
	x:+ 1 * delta
	If x> Screenwidth x = 0
	start = MilliSecs()
	
	Cls
	framedelay:+1
	If framedelay > 5'25
		framedelay = 0
		frame:+1
		If frame => maxframes frame = 0
	End If
	DrawImage mipmappedimg, x , y , frame
	DrawImage defaultimg , x , y + 64 , frame
	DrawImage filteredimg, x, y+128 , frame
	Flip
	
	Endtime = MilliSecs()
	
Until KeyHit(KEY_ESCAPE) 

And this is the image:



Finally here is the exe/code and image in a zip:

http://therevills.syntaxbomb.com/tests/mipmappedtest.zip

Cheers!