From b5887904192309b37cf0607c546dce2c85fadfa8 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 12 Aug 2016 23:39:33 +0300
Subject: [PATCH] Some fixes to lighting management

---
 source/lighting.cpp  | 11 +++++++++++
 source/lightunit.cpp |  1 -
 source/lightunit.h   |  1 -
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/source/lighting.cpp b/source/lighting.cpp
index 5cda4f4c..ce522ac0 100644
--- a/source/lighting.cpp
+++ b/source/lighting.cpp
@@ -104,14 +104,25 @@ void Lighting::bind() const
 	if(lights.size()>LightUnit::get_n_units())
 		throw invalid_operation("Lighting::bind");
 
+	const Lighting *old = current();
 	if(!set_current(this))
 		return;
 
 	enable(GL_LIGHTING);
 	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, &ambient.r);
 	for(unsigned i=0; i<lights.size(); ++i)
+	{
 		if(lights[i])
 			lights[i]->bind_to(i);
+		else
+			Light::unbind_from(i);
+	}
+
+	if(old)
+	{
+		for(unsigned i=lights.size(); i<old->lights.size(); ++i)
+			Light::unbind_from(i);
+	}
 
 	if(fog_density)
 	{
diff --git a/source/lightunit.cpp b/source/lightunit.cpp
index 3eb32929..e7cf7419 100644
--- a/source/lightunit.cpp
+++ b/source/lightunit.cpp
@@ -10,7 +10,6 @@ namespace Msp {
 namespace GL {
 
 vector<LightUnit> LightUnit::units;
-LightUnit *LightUnit::cur_unit = 0;
 
 LightUnit::LightUnit():
 	light(0)
diff --git a/source/lightunit.h b/source/lightunit.h
index 658712df..bc200ea4 100644
--- a/source/lightunit.h
+++ b/source/lightunit.h
@@ -15,7 +15,6 @@ private:
 	const Light *light;
 
 	static std::vector<LightUnit> units;
-	static LightUnit *cur_unit;
 
 	LightUnit();
 
-- 
2.43.0