BGE bug #17670: Python controlled mist doesnt work in textured mode.

source/gameengine/Rasterizer/RAS_IRasterizer.h

@@ -280,6 +280,7 @@ public:
 	/**
 	 */
 	virtual void	DisableFog()=0;
+	virtual bool	IsFogEnabled()=0;
 
 	virtual void	SetBackColor(float red,
 								 float green,

source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp

@@ -210,6 +210,10 @@ void RAS_OpenGLRasterizer::DisableFog()
 	m_fogenabled = false;
 }
 
+bool RAS_OpenGLRasterizer::IsFogEnabled()
+{
+	return m_fogenabled;
+}
 
 
 void RAS_OpenGLRasterizer::DisplayFog()

source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.h

@@ -190,6 +190,7 @@ public:
 
 	void			DisableFog();
 	virtual void	DisplayFog();
+	virtual bool	IsFogEnabled();
 
 	virtual void	SetBackColor(
 						float red,