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Test lib updates: updated harness to support filtering, added surface…
… comparer, updated interface to test images; added Render test suite from GSOC project
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Original file line number | Diff line number | Diff line change |
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/* | ||
Simple DirectMedia Layer | ||
Copyright (C) 1997-2012 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. | ||
*/ | ||
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||
/** | ||
* \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. | ||
*/ | ||
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/* | ||
Defines comparison functions (i.e. for surfaces). | ||
*/ | ||
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#ifndef _SDL_test_compare_h | ||
#define _SDL_test_compare_h | ||
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#include "SDL.h" | ||
#include "SDL_test_images.h" | ||
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#include "begin_code.h" | ||
/* Set up for C function definitions, even when using C++ */ | ||
#ifdef __cplusplus | ||
/* *INDENT-OFF* */ | ||
extern "C" { | ||
/* *INDENT-ON* */ | ||
#endif | ||
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/** | ||
* \brief Compares a surface and with reference image data for equality | ||
* | ||
* \param sur Surface used in comparison | ||
* \param img Test Surface used in comparison | ||
* \param allowable_error Allowable difference in blending accuracy | ||
* | ||
* \returns 0 if comparison succeeded, >0 (=number of pixels where comparison failed) if comparison failed, <0 for any other error. | ||
*/ | ||
int SDLTest_CompareSurfaces(SDL_Surface *sur, SDL_Surface *img, int allowable_error); | ||
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/* Ends C function definitions when using C++ */ | ||
#ifdef __cplusplus | ||
/* *INDENT-OFF* */ | ||
} | ||
/* *INDENT-ON* */ | ||
#endif | ||
#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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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,83 @@ | ||
/* | ||
Simple DirectMedia Layer | ||
Copyright (C) 1997-2012 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. | ||
*/ | ||
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/* | ||
Based on automated SDL_Surface tests originally written by Edgar Simo 'bobbens'. | ||
Rewritten for test lib by Andreas Schiffler. | ||
*/ | ||
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#include "SDL_config.h" | ||
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#include "SDL_test.h" | ||
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int SDLTest_CompareSurfaces( SDL_Surface *surface, SDL_Surface *referenceSurface, int allowable_error ) | ||
{ | ||
int ret; | ||
int i,j; | ||
int bpp, bpp_reference; | ||
Uint8 *p, *p_reference; | ||
int dist; | ||
Uint8 R, G, B, A; | ||
Uint8 Rd, Gd, Bd, Ad; | ||
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/* Make surfacee size is the same. */ | ||
if ((surface->w != referenceSurface->w) || (surface->h != referenceSurface->h)) | ||
{ | ||
return -1; | ||
} | ||
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SDL_LockSurface( surface ); | ||
SDL_LockSurface( referenceSurface ); | ||
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ret = 0; | ||
bpp = surface->format->BytesPerPixel; | ||
bpp_reference = referenceSurface->format->BytesPerPixel; | ||
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/* Compare image - should be same format. */ | ||
for (j=0; j<surface->h; j++) { | ||
for (i=0; i<surface->w; i++) { | ||
p = (Uint8 *)surface->pixels + j * surface->pitch + i * bpp; | ||
p_reference = (Uint8 *)referenceSurface->pixels + j * referenceSurface->pitch + i * bpp_reference; | ||
dist = 0; | ||
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SDL_GetRGBA(*(Uint32*)p, surface->format, &R, &G, &B, &A); | ||
SDL_GetRGBA(*(Uint32*)p_reference, referenceSurface->format, &Rd, &Gd, &Bd, &Ad); | ||
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dist += (R-Rd)*(R-Rd); | ||
dist += (G-Gd)*(G-Gd); | ||
dist += (B-Bd)*(B-Bd); | ||
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/* Allow some difference in blending accuracy */ | ||
if (dist > allowable_error) { | ||
ret++; | ||
} | ||
} | ||
} | ||
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SDL_UnlockSurface( surface ); | ||
SDL_UnlockSurface( referenceSurface ); | ||
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return ret; | ||
} |
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