3D: Ensure correct fog handling for effects

--HG--
branch : multipass-stereo

code/nel/src/3d/bloom_effect.cpp

@@ -232,6 +232,10 @@ void CBloomEffect::applyBloom()
 	CDriverUser *dru = static_cast<CDriverUser *>(_Driver);
 	IDriver *drv = dru->getDriver();
 
+	// backup
+	bool fogEnabled = _Driver->fogEnabled();
+	_Driver->enableFog(false);
+
 	NL3D::ITexture *renderTarget = drv->getRenderTarget();
 	nlassert(renderTarget);
 	nlassert(renderTarget->isBloomTexture());
@@ -286,6 +290,9 @@ void CBloomEffect::applyBloom()
 	_BlurMat.getObjectPtr()->setTexture(2, NULL);
 	_BlurMat.getObjectPtr()->setTexture(3, NULL);
 
+	// restore
+	_Driver->enableFog(fogEnabled);
+
 	// recycle render targets
 	_Driver->getRenderTargetManager().recycleRenderTarget(_BlurFinalTex);
 	_BlurFinalTex = NULL;

code/nel/src/3d/fxaa.cpp

@@ -199,6 +199,10 @@ void CFXAA::applyEffect()
 	CDriverUser *dru = static_cast<CDriverUser *>(m_Driver);
 	IDriver *drv = dru->getDriver();
 
+	// backup
+	bool fogEnabled = m_Driver->fogEnabled();
+	m_Driver->enableFog(false);
+
 	NL3D::ITexture *renderTarget = drv->getRenderTarget();
 	nlassert(renderTarget);
 	nlassert(renderTarget->isBloomTexture());
@@ -275,6 +279,9 @@ void CFXAA::applyEffect()
 	drv->activeVertexProgram(NULL);
 	drv->activePixelProgram(NULL);
 
+	// restore
+	m_Driver->enableFog(fogEnabled);
+
 	// recycle render target
 	m_Driver->getRenderTargetManager().recycleRenderTarget(otherRenderTarget);
 }