From 840fe5a11f50befe9f79ccae4be2f050dbb7fe0a Mon Sep 17 00:00:00 2001
From: pszsh <jesspshoes@gmail.com>
Date: Thu, 26 Feb 2026 22:17:48 -0800
Subject: [PATCH] fix horizontal seam: extend half-height by 2px for vertical
 overlap at mirror seam
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Same approach as the horizontal overlap (55% width) — the half-canvas
now extends 2 pixels past the midline so top/bottom quadrants overlap
slightly, covering rounding/rasterization gaps.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/VisualizerWidget.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/VisualizerWidget.cpp b/src/VisualizerWidget.cpp
index 4a411fa..2bfcc02 100644
--- a/src/VisualizerWidget.cpp
+++ b/src/VisualizerWidget.cpp
@@ -390,7 +390,7 @@ void VisualizerWidget::render(QRhiCommandBuffer *cb) {
     m_lastBuildW = w;
     m_lastBuildH = h;
     if (m_mirrored) {
-      buildVertices(w * 0.55f, h / 2);
+      buildVertices(w * 0.55f, h / 2 + 2);
       buildCepstrumVertices(w, h);
     } else {
       buildVertices(w, h);