Include file for SDL test framework. More...

Functions
int	SDLTest_CompareSurfaces (SDL_Surface surface, SDL_Surface referenceSurface, int allowable_error)
	Compares a surface and with reference image data for equality.

Detailed Description

Include file for SDL test framework.

This code is a part of the SDL2_test library, not the main SDL library.

Definition in file SDL_test_compare.h.

Function Documentation

int SDLTest_CompareSurfaces	(	SDL_Surface *	surface,
		SDL_Surface *	referenceSurface,
		int	allowable_error
	)

Compares a surface and with reference image data for equality.

Parameters:

surface	Surface used in comparison
referenceSurface	Test Surface used in comparison
allowable_error	Allowable difference (squared) in blending accuracy.

Returns:: 0 if comparison succeeded, >0 (=number of pixels where comparison failed) if comparison failed, -1 if any of the surfaces were NULL, -2 if the surface sizes differ.