X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=flow.cpp;h=205b24f098e4035f9f725a2f16e0c8b493fe6289;hb=b69854826898be24a48e77733f629240756073a3;hp=e59a4812e8e2dcd0a3eef18be621d8b98c1b6c00;hpb=d567402be6554018899290ede7608c07540ff18c;p=nageru

diff --git a/flow.cpp b/flow.cpp
index e59a481..205b24f 100644
--- a/flow.cpp
+++ b/flow.cpp
@@ -523,7 +523,7 @@ int main(void)
 			float w = dense_flow[(yy * level_width + x) * 3 + 2];
 
 			du = (du / w) * level_width;
-			dv = (dv / w) * level_height;
+			dv = (-dv / w) * level_height;
 
 			uint8_t r, g, b;
 			flow2rgb(du, dv, &r, &g, &b);