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From 2f9a21423a1ef666c93f15e2068bcde979d20f7e Mon Sep 17 00:00:00 2001
From: Marko Viitanen <fador@iki.fi>
Date: Wed, 14 Aug 2024 12:47:57 +0300
Subject: [PATCH] Add an offset to double comparison in mv_cost to fix problems
on some platforms
---
src/search_inter.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/search_inter.c b/src/search_inter.c
index 9e624532..f8f876a3 100644
--- a/src/search_inter.c
+++ b/src/search_inter.c
@@ -220,8 +220,9 @@ static bool check_mv_cost(inter_search_info_t *info,
info->height,
info->optimized_sad
);
-
- if (cost >= *best_cost) return false;
+ // On some platforms comparing two doubles give weird results, so add an offset
+#define KVZ_TEMP_DOUBLE_PRECISION 0.001
+ if (cost + KVZ_TEMP_DOUBLE_PRECISION >= *best_cost) return false;
cost += info->mvd_cost_func(
info->state,
@@ -233,7 +234,8 @@ static bool check_mv_cost(inter_search_info_t *info,
&bitcost
);
- if (cost >= *best_cost) return false;
+ if (cost + KVZ_TEMP_DOUBLE_PRECISION >= *best_cost) return false;
+#undef KVZ_TEMP_DOUBLE_PRECISION
// Set to motion vector in quarter pixel precision.
best_mv->x = x * 4;
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