From 406f347971e8ea99ec6e8581d864653693373300 Mon Sep 17 00:00:00 2001
From: Matthew Gordon <matthew@gordon.earth>
Date: Fri, 21 Mar 2025 20:52:23 -0300
Subject: [PATCH] Fix floating-point precision issue in accumulation_buffer

Fixed an issue that prevented the image from converging.

(Technically, the convergence was happening and the issue was the final
calculation of the displayed colours, but the visual effect was the same as
failure to converge.)
---
 src/accumulation_buffer.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/accumulation_buffer.rs b/src/accumulation_buffer.rs
index 2d1db3c..5e0656b 100644
--- a/src/accumulation_buffer.rs
+++ b/src/accumulation_buffer.rs
@@ -56,7 +56,7 @@ impl AccumulationBuffer {
         let colour_sum_t = buffer_colour_sum.values + colour_sum_y;
         buffer_colour_bias.values = (colour_sum_t - buffer_colour_sum.values) - colour_sum_y;
         buffer_colour_sum.values = colour_sum_t;
-        buffer_colour.values = buffer_colour_sum.values * (1.0 / *buffer_weight);
+        buffer_colour.values = buffer_colour_sum.values / *buffer_weight;
     }
 
     pub fn merge_tile(&mut self, tile: &Tile, src: &AccumulationBuffer) {