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