2021-04-18 03:35:25 +00:00
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/*
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Simple DirectMedia Layer
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2021-05-09 09:30:38 +00:00
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Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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2021-04-18 03:35:25 +00:00
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* \file SDL_test_compare.h
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*
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* Include file for SDL test framework.
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*
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* This code is a part of the SDL2_test library, not the main SDL library.
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*/
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/*
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Defines comparison functions (i.e. for surfaces).
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*/
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#ifndef SDL_test_compare_h_
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#define SDL_test_compare_h_
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#include "SDL.h"
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#include "SDL_test_images.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Compares a surface and with reference image data for equality
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*
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* \param surface Surface used in comparison
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* \param referenceSurface Test Surface used in comparison
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* \param allowable_error Allowable difference (=sum of squared difference for each RGB component) in blending accuracy.
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*
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* \returns 0 if comparison succeeded, >0 (=number of pixels for which the comparison failed) if comparison failed, -1 if any of the surfaces were NULL, -2 if the surface sizes differ.
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*/
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int SDLTest_CompareSurfaces(SDL_Surface *surface, SDL_Surface *referenceSurface, int allowable_error);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* SDL_test_compare_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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