From 0fe21a8bb81c151d7f7427e788ca8cc576fe2778 Mon Sep 17 00:00:00 2001
From: Kae <80987908+Novaenia@users.noreply.github.com>
Date: Sun, 9 Mar 2025 08:26:51 +1100
Subject: speculative fix for lightmap flicker

can't tell what's going on here - is lighting calculation being ran when the point lights aren't populated? weird
---
 source/game/StarWorldClient.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'source/game/StarWorldClient.cpp')

diff --git a/source/game/StarWorldClient.cpp b/source/game/StarWorldClient.cpp
index efc2eb7..82c09ae 100644
--- a/source/game/StarWorldClient.cpp
+++ b/source/game/StarWorldClient.cpp
@@ -90,6 +90,7 @@ WorldClient::WorldClient(PlayerPtr mainPlayer, LuaRootPtr luaRoot) {
   m_altMusicActive = false;
 
   m_stopLightingThread = false;
+  m_pendingLightReady = false;
 
   clearWorld();
 }
@@ -461,6 +462,7 @@ void WorldClient::render(WorldRenderData& renderData, unsigned bufferTiles) {
       m_pendingLights = std::move(renderLightSources);
       m_pendingParticleLights = std::move(m_particles->lightSources());
       m_pendingLightRange = window.padded(1);
+      m_pendingLightReady = true;
     } //Kae: Padded by one to fix light spread issues at the edges of the frame.
 
     if (m_asyncLighting)
@@ -1667,7 +1669,9 @@ void WorldClient::lightingTileGather() {
 
 void WorldClient::lightingCalc() {
   MutexLocker prepLocker(m_lightMapPrepMutex);
-
+  if (!m_pendingLightReady.load())
+    return;
+  m_pendingLightReady = false;
   RectI lightRange = m_pendingLightRange;
   List<LightSource> lights = std::move(m_pendingLights);
   List<std::pair<Vec2F, Vec3F>> particleLights = std::move(m_pendingParticleLights);
-- 
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