SDL::PixelFormat - Stores surface format information

	my $surface = SDL::Surface->new( ...
	$surface->format; #this returns the PixelFormat object attached to this surface

PixelFormat is only created in a SDL::Surface. This module only provides getters to the surface's pixelformat. Later on we will provide setting capability.

An SDL::PixelFormat stores surface format information

	$surface->format->palette;

Returns the SDL_Palette and SDL::Palette of the format of the surface.

	$surface->format->BitsPerPixel;

The number of bits used to represent each pixel in a surface. Usually 8, 16, 24 or 32. (1 to 7 are not allowed when creating a surface or open a video mode

	$surface->format->BytesPerPixel;

The number of bytes used to represent each pixel in a surface. Usually one to four.

	$surface->format->Rloss; #red   loss
	$surface->format->Bloss; #blue  loss
	$surface->format->Gloss; #green loss	
	$surface->format->Aloss; #alpha loss

Precision loss of each color component (2[RGBA]loss)

	$surface->format->Rshift; #red   shift
	$surface->format->Bshift; #blue  shift
	$surface->format->Gshift; #green shift	
	$surface->format->Ashift; #alpha shift

Binary left shift of each color component in the pixel value

	$surface->format->Rmask; #red   mask
	$surface->format->Bmask; #blue  mask
	$surface->format->Gmask; #green mask	
	$surface->format->Amask; #alpha mask

Binary left shift of each color component in the pixel value

	$surface->format->colorkey;

Pixel value of transparent pixels.

	$surface->format->alpha;

Overall surface alpha value

SDL::Surface