diff --git a/code/nel/src/3d/driver/OpenGL3/driver_opengl.cpp b/code/nel/src/3d/driver/OpenGL3/driver_opengl.cpp
index 2031e9b8f..47d67869c 100644
--- a/code/nel/src/3d/driver/OpenGL3/driver_opengl.cpp
+++ b/code/nel/src/3d/driver/OpenGL3/driver_opengl.cpp
@@ -1227,13 +1227,8 @@ void CDriverGL3::checkForPerPixelLightingSupport()
 	// TODO : support for EnvCombine3
 	// TODO : support for less than 3 stages
 
-	_SupportPerPixelShaderNoSpec = (_Extensions.NVTextureEnvCombine4 || _Extensions.ATITextureEnvCombine3)
-								   && _Extensions.ARBTextureCubeMap
-								   && _Extensions.NbTextureStages >= 3;
-
-	_SupportPerPixelShader = (_Extensions.NVTextureEnvCombine4 || _Extensions.ATITextureEnvCombine3)
-							 && _Extensions.ARBTextureCubeMap
-							 && _Extensions.NbTextureStages >= 2;
+	_SupportPerPixelShaderNoSpec = _Extensions.ATITextureEnvCombine3 && _Extensions.ARBTextureCubeMap && _Extensions.NbTextureStages >= 3;
+	_SupportPerPixelShader = _Extensions.ATITextureEnvCombine3 && _Extensions.ARBTextureCubeMap && _Extensions.NbTextureStages >= 2;
 }
 
 // ***************************************************************************
@@ -1984,9 +1979,8 @@ bool CDriverGL3::supportCloudRenderSinglePass() const
 {
 	H_AUTO_OGL(CDriverGL3_supportCloudRenderSinglePass)
 
-	 //return _Extensions.NVTextureEnvCombine4 || (_Extensions.ATIXTextureEnvRoute && _Extensions.EXTTextureEnvCombine);
 	// there are slowdown for now with ati fragment shader... don't know why
-	return _Extensions.NVTextureEnvCombine4 || _Extensions.ATIFragmentShader;
+	return _Extensions.ATIFragmentShader;
 }
 
 // ***************************************************************************
@@ -2102,7 +2096,7 @@ bool CDriverGL3::supportMADOperator() const
 {
 	H_AUTO_OGL(CDriverGL3_supportMADOperator)
 
-	return _Extensions.NVTextureEnvCombine4 || _Extensions.ATITextureEnvCombine3;
+	return _Extensions.ATITextureEnvCombine3;
 }
 
 // ***************************************************************************
diff --git a/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.cpp b/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.cpp
index f82d985b6..3e984645b 100644
--- a/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.cpp
+++ b/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.cpp
@@ -472,15 +472,6 @@ static bool	setupEXTSeparateSpecularColor(const char	*glext)
 	return true;
 }
 
-
-// *********************************
-static bool	setupNVTextureEnvCombine4(const char	*glext)
-{
-	H_AUTO_OGL(setupNVTextureEnvCombine4);
-	CHECK_EXT("GL_NV_texture_env_combine4");
-	return true;
-}
-
 // *********************************
 static bool	setupATITextureEnvCombine3(const char	*glext)
 {
@@ -940,9 +931,6 @@ void	registerGlExtensions(CGlExtensions &ext)
 	// Check EXTSeparateSpecularColor.
 	ext.EXTSeparateSpecularColor= setupEXTSeparateSpecularColor(glext);
 
-	// Check NVTextureEnvCombine4.
-	ext.NVTextureEnvCombine4= setupNVTextureEnvCombine4(glext);
-
 	// Check for cube mapping
 	ext.ARBTextureCubeMap = setupARBTextureCubeMap(glext);
 
diff --git a/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.h b/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.h
index a336e8eea..420e50844 100644
--- a/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.h
+++ b/code/nel/src/3d/driver/OpenGL3/driver_opengl_extension.h
@@ -44,7 +44,6 @@ struct	CGlExtensions
 	bool	EXTTextureCompressionS3TC;
 	bool	EXTVertexWeighting;
 	bool	EXTSeparateSpecularColor;
-	bool	NVTextureEnvCombine4;
 	bool	ARBTextureCubeMap;
 	bool	NVOcclusionQuery;
 	bool	NVTextureRectangle;
@@ -102,7 +101,6 @@ public:
 		EXTTextureCompressionS3TC= false;
 		EXTVertexWeighting= false;
 		EXTSeparateSpecularColor= false;
-		NVTextureEnvCombine4= false;
 		ATITextureEnvCombine3= false;
 		ATIXTextureEnvRoute= false;
 		ARBTextureCubeMap= false;
@@ -146,7 +144,6 @@ public:
 		result += EXTTextureEnvCombine ? "EXTTextureEnvCombine(*) " : "";
 		result += ARBTextureCompression ? "ARBTextureCompression " : "";
 		result += EXTTextureCompressionS3TC ? "EXTTextureCompressionS3TC " : "";
-		result += NVTextureEnvCombine4 ? "NVTextureEnvCombine4 " : "";
 		result += ATITextureEnvCombine3 ? "ATITextureEnvCombine3 " : "";
 		result += ATIXTextureEnvRoute ? "ATITextureEnvRoute " : "";
 		result += ARBTextureCubeMap ? "ARBTextureCubeMap " : "";
diff --git a/code/nel/src/3d/driver/OpenGL3/driver_opengl_material.cpp b/code/nel/src/3d/driver/OpenGL3/driver_opengl_material.cpp
index 687ec87ae..eecb0d267 100644
--- a/code/nel/src/3d/driver/OpenGL3/driver_opengl_material.cpp
+++ b/code/nel/src/3d/driver/OpenGL3/driver_opengl_material.cpp
@@ -602,7 +602,7 @@ void CDriverGL3::computeLightMapInfos (const CMaterial &mat)
 	// Compute how many pass, according to driver caps.
 	_NLightMapPerPass = inlGetNumTextStages()-1;
 	// Can do more than 2 texture stages only if NVTextureEnvCombine4 or ATITextureEnvCombine3
-	if (!_Extensions.NVTextureEnvCombine4 && !_Extensions.ATITextureEnvCombine3)
+	if ( !_Extensions.ATITextureEnvCombine3 )
 	{
 		_NLightMapPerPass = 1;
 		_LightMapNoMulAddFallBack= true;
@@ -780,7 +780,7 @@ void			CDriverGL3::setupLightMapPass(uint pass)
 				else
 				{
 					// Here, we are sure that texEnvCombine4 or texEnvCombine3 is OK.
-					nlassert(_Extensions.NVTextureEnvCombine4 || _Extensions.ATITextureEnvCombine3);
+					nlassert( _Extensions.ATITextureEnvCombine3);
 
 					// setup constant color with Lightmap factor.
 					stdEnv.ConstantColor=lmapFactor;
@@ -796,28 +796,6 @@ void			CDriverGL3::setupLightMapPass(uint pass)
 						// TexEnv is special.
 						_CurrentTexEnvSpecial[stage] = TexEnvSpecialLightMap;
 
-						if (_Extensions.NVTextureEnvCombine4)
-						{
-							// What we want to setup is  Texture*Constant + Previous*1.
-							glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-
-							// Operator.
-							glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD );
-							glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_ADD );
-							// Arg0.
-							glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE );
-							glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-							// Arg1.
-							glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_CONSTANT_EXT );
-							glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-							// Arg2.
-							glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_PREVIOUS_EXT );
-							glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-							// Arg3.
-							glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-							glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR);
-						}
-						else
 						{
 							// ATI EnvCombine3
 							// What we want to setup is  Texture*Constant + Previous.
@@ -1108,7 +1086,7 @@ sint			CDriverGL3::beginSpecularMultiPass()
 	if(!_Extensions.ARBTextureCubeMap)
 		return 1;
 
-	if( _Extensions.NVTextureEnvCombine4 || _Extensions.ATITextureEnvCombine3) // NVidia or ATI optimization
+	if( _Extensions.ATITextureEnvCombine3) // NVidia or ATI optimization
 		return 1;
 	else
 		return 2;
@@ -1127,65 +1105,8 @@ void			CDriverGL3::setupSpecularPass(uint pass)
 		// NB: setupMaterial() code has correclty setuped textures.
 		return;
 	}
-
-	/// Support NVidia combine 4 extension to do specular map in a single pass
-	if( _Extensions.NVTextureEnvCombine4 )
-	{	// Ok we can do it in a single pass
-
-		// Set Stage 1
-		// Special: not the same sepcial env if there is or not texture in stage 0.
-		CTexEnvSpecial		newEnvStage1;
-		if( mat.getTexture(0) == NULL )
-			newEnvStage1= TexEnvSpecialSpecularStage1NoText;
-		else
-			newEnvStage1= TexEnvSpecialSpecularStage1;
-		// Test if same env as prec.
-		if(_CurrentTexEnvSpecial[1] != newEnvStage1)
-		{
-			// TexEnv is special.
-			_CurrentTexEnvSpecial[1] = newEnvStage1;
-
-			_DriverGLStates.activeTextureARB(1);
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-			// Operator Add (Arg0*Arg1+Arg2*Arg3)
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD );
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_ADD );
-			// Arg0.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR );
-			// Arg1.
-			if( newEnvStage1 == TexEnvSpecialSpecularStage1NoText )
-			{
-				glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_ZERO );
-				glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_ONE_MINUS_SRC_COLOR);
-			}
-			else
-			{
-				glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_PREVIOUS_EXT );
-				glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_ALPHA );
-			}
-			// Arg2.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_PREVIOUS_EXT );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR );
-			// Arg3.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR);
-			// Result : Texture*Previous.Alpha+Previous
-			// Setup Alpha Diffuse Copy
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_PRIMARY_COLOR_EXT );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT, GL_SRC_ALPHA );
-			// Arg1.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT, GL_ZERO );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT, GL_ONE_MINUS_SRC_ALPHA);
-			// Arg2.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT, GL_ZERO );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT, GL_SRC_ALPHA );
-			// Arg3.
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_ALPHA_NV, GL_ZERO );
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_ALPHA_NV, GL_SRC_ALPHA);
-		}
-	}
-	else if (_Extensions.ATITextureEnvCombine3)
+	
+	if (_Extensions.ATITextureEnvCombine3)
 	{
 		// Ok we can do it in a single pass
 
@@ -1475,25 +1396,6 @@ void			CDriverGL3::setupPPLPass(uint pass)
 		_CurrentTexEnvSpecial[0] = TexEnvSpecialPPLStage0;
 		_DriverGLStates.activeTextureARB(0);
 
-		if (_Extensions.NVTextureEnvCombine4)
-		{
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD);
-			// Arg0 = Diffuse read in cube map
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-			// Arg1 = Light color
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_CONSTANT_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-			// Arg2 = Primary color (other light diffuse and
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_PRIMARY_COLOR_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-			// Arg3 = White (= ~ Black)
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR);
-		}
-		else // use ATI extension
 		{
 			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 
@@ -1525,40 +1427,6 @@ void			CDriverGL3::setupPPLPass(uint pass)
 		_CurrentTexEnvSpecial[2] = TexEnvSpecialPPLStage2;
 		_DriverGLStates.activeTextureARB(2);
 
-		if (_Extensions.NVTextureEnvCombine4)
-		{
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-			//== colors ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD);
-			// Arg0 = Specular read in cube map
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-			// Arg1 = Light color
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_CONSTANT_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-			// Arg2 = Primary color ( + other light diffuse )
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_PREVIOUS_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-			// Arg3 = White (= ~ Black)
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR);
-
-			//== alpha ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_ADD);
-			// Arg0 = PREVIOUS ALPHA
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_PREVIOUS_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT, GL_SRC_COLOR);
-			// Arg1 = 1
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT, GL_ONE_MINUS_SRC_COLOR);
-			// Arg2 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT, GL_SRC_COLOR);
-			// Arg3 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_ALPHA_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_ALPHA_NV, GL_SRC_COLOR);
-		}
-		else // ATI EnvCombine3
 		{
 			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 			//== colors ==
@@ -1640,25 +1508,6 @@ void			CDriverGL3::setupPPLNoSpecPass(uint pass)
 		_CurrentTexEnvSpecial[0] = TexEnvSpecialPPLStage0;
 		_DriverGLStates.activeTextureARB(0);
 
-		if (_Extensions.NVTextureEnvCombine4)
-		{
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD);
-			// Arg0 = Diffuse read in cube map alpha
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-			// Arg1 = Light color
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_CONSTANT_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-			// Arg2 = Primary color (other light diffuse and
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_PRIMARY_COLOR_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-			// Arg3 = White (= ~ Black)
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR);
-		}
-		else
 		{
 			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 
@@ -1785,79 +1634,6 @@ void		CDriverGL3::setupCloudPass (uint /* pass */)
 
 	if (_CurrentTexEnvSpecial[0] != TexEnvSpecialCloudStage0)
 	{
-		if (_Extensions.NVTextureEnvCombine4)
-		{
-			_CurrentTexEnvSpecial[0] = TexEnvSpecialCloudStage0;
-			_CurrentTexEnvSpecial[1] = TexEnvSpecialCloudStage1;
-
-			// Setup 1st Stage
-			_DriverGLStates.activeTextureARB(0);
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-			//== colors ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD);
-			// Arg0 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-			// Arg1 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-			// Arg2 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-			// Arg3 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_SRC_COLOR);
-
-			//== alpha ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_ADD);
-			// Arg0 = AT0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_TEXTURE0_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg1 = AWPOS
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT, GL_PRIMARY_COLOR_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg2 = AT1
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT, GL_TEXTURE1_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg3 = 1-AWPOS
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_ALPHA_NV, GL_PRIMARY_COLOR_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_ALPHA_NV, GL_ONE_MINUS_SRC_ALPHA);
-
-			// Setup 2nd Stage
-			_DriverGLStates.activeTextureARB(1);
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV);
-			//== colors ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_ADD);
-			// Arg0 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_EXT, GL_SRC_COLOR);
-			// Arg1 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_EXT, GL_SRC_COLOR);
-			// Arg2 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_EXT, GL_SRC_COLOR);
-			// Arg3 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_SRC_COLOR);
-
-			//== alpha ==
-			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_ADD);
-			// Arg0 = AT0*AWPOS+AT1*(1-AWPOS)
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_PREVIOUS_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg1 = AINT
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_EXT, GL_CONSTANT_EXT);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg2 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_EXT, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_EXT, GL_SRC_ALPHA);
-			// Arg3 = 0
-			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE3_ALPHA_NV, GL_ZERO);
-			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND3_ALPHA_NV, GL_SRC_ALPHA);
-			activateTexEnvColor (1, mat.getColor());
-		}
-		else
 		{
 			// TODO : for now the state is not cached in _CurrentTexEnvSpecial
 			nglBindFragmentShaderATI(ATICloudShaderHandle);
@@ -1903,8 +1679,6 @@ void		CDriverGL3::setupCloudPass (uint /* pass */)
 			*/
 		}
 	}
-	if (_Extensions.NVTextureEnvCombine4)
-		activateTexEnvColor (1, mat.getColor());
 }
 
 // ***************************************************************************
diff --git a/code/nel/src/3d/driver/OpenGL3/driver_opengl_texture.cpp b/code/nel/src/3d/driver/OpenGL3/driver_opengl_texture.cpp
index 5c643e86b..91dc3d93d 100644
--- a/code/nel/src/3d/driver/OpenGL3/driver_opengl_texture.cpp
+++ b/code/nel/src/3d/driver/OpenGL3/driver_opengl_texture.cpp
@@ -1741,12 +1741,6 @@ void		CDriverGL3::forceActivateTexEnvMode(uint stage, const CMaterial::CTexEnv
 	// "Normal drivers", setup EnvCombine.
 	if(_Extensions.EXTTextureEnvCombine)
 	{
-		// if Mad operator is used, special setup
-		if ((env.Env.OpAlpha == CMaterial::Mad || env.Env.OpRGB == CMaterial::Mad) && _Extensions.NVTextureEnvCombine4)
-		{
-			forceActivateTexEnvModeEnvCombine4(env);
-		}
-		else
 		{
 			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 			// RGB.