Is there a bug with drawing text to images in B+?

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sswift

Aaand... now there's no way to get the width and height of the current graphics buffer, so I can't make a generalized function for drawing a multiply blended rectangle to the current buffer.

; -----------------------------------------------------------------------------------------------------------------------------------
; This function draws a rectangle of the specified color using multiply blending to the current buffer.
; -----------------------------------------------------------------------------------------------------------------------------------
Function Draw_Rect(X1, Y1, X2, Y2, ColorR, ColorG, ColorB)

	Local LoopX, LoopY

	DestBuffer = GraphicsBuffer()
	
 
			
	LockBuffer(DestBuffer)
	For LoopY = Y1 To Y2
		For LoopX = X1 To X2

			RGB = ReadPixelFast(LoopX, LoopY, DestBuffer) 
		
			R = (RGB Shr 16) And 255 
			G = (RGB Shr 8 ) And 255
			B = (RGB       ) And 255
			
			R = R * (ColorR / 255.0)
			G = G * (ColorG / 255.0)
			B = B * (ColorB / 255.0)
			
			RGB = (R Shl 16) Or (G Shl 8) Or B
				
			WritePixelFast LoopX, LoopY, RGB, DestBuffer 
		
		Next
	Next
	UnlockBuffer(DestBuffer)

End Function

Blitzplus, why do you hate me so?

Ps:
the reason I need to know the width is so that I can automatically clip the rectangle to the edges of the image... Otherwise Blitz will crash if I specify a rectangle which is too large.