Switch to a Xoroshiro128+ pseudorandom number generator
diff --git a/MagickCore/quantize.c b/MagickCore/quantize.c
index 90d5f35..327147d 100644
--- a/MagickCore/quantize.c
+++ b/MagickCore/quantize.c
@@ -2382,6 +2382,8 @@
const double max_distortion,ExceptionInfo *exception)
{
#define KmeansImageTag "Kmeans/Image"
+#define RandomPixel(random_info) \
+ (QuantumRange*GetPseudoRandomValue(random_info))
CacheView
*image_view;
@@ -2482,15 +2484,16 @@
/*
Seed with random pixels in image.
*/
- image_view=AcquireAuthenticCacheView(image,exception);
random_info=AcquireRandomInfo();
for ( ; n < (ssize_t) image->colors; n++)
- (void) GetOneCacheViewVirtualPixelInfo(image_view,
- (ssize_t) (GetPseudoRandomValue(random_info)*image->columns),
- (ssize_t) (GetPseudoRandomValue(random_info)*image->rows),
- kmeans_colormap+n,exception);
+ {
+ kmeans_colormap[n].red=RandomPixel(random_info);
+ kmeans_colormap[n].green=RandomPixel(random_info);
+ kmeans_colormap[n].blue=RandomPixel(random_info);
+ kmeans_colormap[n].alpha=RandomPixel(random_info);
+ kmeans_colormap[n].black=RandomPixel(random_info);
+ }
random_info=DestroyRandomInfo(random_info);
- image_view=DestroyCacheView(image_view);
}
}
(void) memcpy(image->colormap,kmeans_colormap,image->colors*
