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Allow some variation in the pixel values to account for blending accuracy differences.

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404197
This commit is contained in:
Sam Lantinga 2009-11-19 05:06:01 +00:00
parent 556c82f866
commit 92f130691a
1 changed files with 11 additions and 9 deletions
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20
test/automated/common/common.c
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@ -47,22 +47,24 @@ int surface_compare( SDL_Surface *sur, const SurfaceImage_t *img )
case 4:
{
int fail;
int dist = 0;
Uint8 R, G, B, A;
SDL_GetRGBA(*(Uint32*)p, sur->format, &R, &G, &B, &A);
if (img->bytes_per_pixel == 3) {
fail = !( (R == pd[0]) &&
(G == pd[1]) &&
(B == pd[2]) );
dist += (R-pd[0])*(R-pd[0]);
dist += (G-pd[1])*(G-pd[1]);
dist += (B-pd[2])*(B-pd[2]);
} else {
fail = !( (R == pd[0]) &&
(G == pd[1]) &&
(B == pd[2]) &&
(A == pd[3]) );
dist += (R-pd[0])*(R-pd[0]);
dist += (G-pd[1])*(G-pd[1]);
dist += (B-pd[2])*(B-pd[2]);
dist += (A-pd[3])*(A-pd[3]);
}
if (fail) {
/* Allow up to sqrt(32) difference in blending accuracy */
if (dist > 32) {
/*printf("pixel %d,%d varies by %d\n", i, j, dist);*/
++ret;
}
}