Masked text with image

[nyte3k]

Okay, so I found an example on how to create masked text...

- (void)drawRect:(CGRect)rect
{
	CGContextRef context = UIGraphicsGetCurrentContext();

	// Draw a dark gray background
	[[UIColor blackColor] setFill];
	CGContextFillRect(context, rect);

	// Draw the text upside-down
	CGContextSaveGState(context);
	CGContextTranslateCTM(context, 0, rect.size.height);
	CGContextScaleCTM(context, 1.0, -1.0);
	[[UIColor whiteColor] setFill];
	[text drawInRect:rect withFont:[UIFont fontWithName:@"HelveticaNeue-Bold" size:124]];
	CGContextRestoreGState(context);

	// Create an image mask from what we've drawn so far
	CGImageRef alphaMask = CGBitmapContextCreateImage(context);

	// Draw a white background (overwriting the previous work)
	[[UIColor whiteColor] setFill];
	CGContextFillRect(context, rect);

    // Draw the image, clipped by the mask
	CGContextSaveGState(context);
	CGContextClipToMask(context, rect, alphaMask);

	[[UIImage imageNamed:@"shuttle.jpg"] drawInRect:rect];
	CGContextRestoreGState(context);
	CGImageRelease(alphaMask);
}

..and i found another on how to combine text to an image and create an image:

-(UIImage *)addText:(UIImage *)img text:(NSString *)text1{
    int w = img.size.width;
    int h = img.size.height; 
    //lon = h - lon;
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
    
    CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage);
    CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1);
	
    char* txt	= (char *)[text1 cStringUsingEncoding:NSASCIIStringEncoding];// "05/05/09";
    CGContextSelectFont(context, "Arial", 18, kCGEncodingMacRoman);
    CGContextSetTextDrawingMode(context, kCGTextFill);
    CGContextSetRGBFillColor(context, 255, 255, 255, 1);
	
	
    //rotate text
    CGContextSetTextMatrix(context, CGAffineTransformMakeRotation( -M_PI/4 ));
	
    CGContextShowTextAtPoint(context, 4, 52, txt, strlen(txt));
	
	
    CGImageRef imageMasked = CGBitmapContextCreateImage(context);
    CGContextRelease(context);
    CGColorSpaceRelease(colorSpace);
	
    return [UIImage imageWithCGImage:imageMasked];
}

What I'm trying to do is combined the masked text to an image and create an image from that. Basically Imagine a background picture of a blue sky. I want text filled with a mask/pattern of clouds, and then that text placed on the blue sky image.

How could I go about accomplishing this?