It seems the texture is loading incorrectly (OS X doesn't have AUX so we use NSBitmapImageRep as seen in the Cocoa version of the source for lesson 6). I've tried using GL_RGB, GL_RGBA, GL_BGR, and GL_BGRA with no luck on getting my texture to look correct. It just looks like this: Any thoughts from someone who has taken a look at the OS X code? (Note on the pic, the left picture is how the texture should look and the right side is how it is appearing)

How do I invert the red channel?

Also with GL_RGB instead of GL_RGBA it looks like this:

I think it may have actually been loading the bitmap upsidedown, after a lot of googling I found this code: (with NeHe.bmp in place of the original)

	NSBitmapImageRep *bitmap;	NSImage *image;		glGenTextures(1, &texture[0]);		glBindTexture(GL_TEXTURE_2D, texture[0]);		image = [NSImage imageNamed:@"NeHe.bmp"];	if (image == nil)		return FALSE;		bitmap = [[NSBitmapImageRep alloc] initWithData:[image TIFFRepresentation]];	if (bitmap == nil)		return FALSE;		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, [bitmap size].width, [bitmap size].height, 0, GL_RGB, GL_UNSIGNED_BYTE, [bitmap bitmapData]);	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);		[bitmap release];	[image release];	return TRUE;

and it works fine! ...I keep solving my problems...

[Edited by - valiantsoul on August 9, 2005 9:53:37 PM]