Filmic HDR tone mapping

[minetest.git] / src / mg_decoration.cpp

diff --git a/src/mg_decoration.cpp b/src/mg_decoration.cpp
index 1e50ba0de8fd2fb1c4b2f16245dd0af4bca49bc7..5959af259b088169d67d8899c4227b02efe64ebf 100644 (file)
--- a/src/mg_decoration.cpp
+++ b/src/mg_decoration.cpp
@@ -117,7 +117,15 @@ size_t Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
                float nval = (flags & DECO_USE_NOISE) ?
                        NoisePerlin2D(&np, p2d_center.X, p2d_center.Y, mapseed) :
                        fill_ratio;
-               u32 deco_count = area * MYMAX(nval, 0.f);
+               u32 deco_count = 0;
+               float deco_count_f = (float)area * nval;
+               if (deco_count_f >= 1.f) {
+                       deco_count = deco_count_f;
+               } else if (deco_count_f > 0.f) {
+                       // For low density decorations calculate a chance for 1 decoration
+                       if (ps.range(1000) <= deco_count_f * 1000.f)
+                               deco_count = 1;
+               }
 
                for (u32 i = 0; i < deco_count; i++) {
                        s16 x = ps.range(p2d_min.X, p2d_max.X);