X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fnoise.cpp;h=6d59224c2f41f4de89ae982627387fcacd7235a2;hb=c877ddd21f402381d88a6bebdd5c7c0b4ac28ba9;hp=c86f833ac3c126c894a53eeb5ad6df6c9c835d02;hpb=e065961dc9af7968d734457ce716231bb51807b7;p=blank.git

diff --git a/src/noise.cpp b/src/noise.cpp
index c86f833..6d59224 100644
--- a/src/noise.cpp
+++ b/src/noise.cpp
@@ -12,6 +12,24 @@ constexpr float one_sixth = 1.0f/6.0f;
 
 namespace blank {
 
+GaloisLFSR::GaloisLFSR(std::uint64_t seed)
+: state(seed) {
+
+}
+
+bool GaloisLFSR::operator ()() {
+	bool result = state & 1;
+	state >>= 1;
+	if (result) {
+		state |= 0x8000000000000000;
+		state ^= mask;
+	} else {
+		state &= 0x7FFFFFFFFFFFFFFF;
+	}
+	return result;
+}
+
+
 SimplexNoise::SimplexNoise(unsigned int seed)
 : grad({
 	{  1.0f,  1.0f,  0.0f },