update shader envmap

include/Utils/Shaders/shaderEnvMap.frag

 //ShaderEnvMap::fragmentShaderText
 
 PRECISON;
-VARYING_FRAG vec3 EyeVector, Normal, LightDir,refl;
+VARYING_FRAG vec3 EyeVector, Normal, LightDir;
 #ifdef WITH_COLOR
 VARYING_FRAG vec3 Color;
 #endif
@@ -35,7 +35,7 @@ void main()
 		#endif
 		
 		vec3 R  = reflect(-EyeVector,N);
-		finalColor += mix(col,texture(EnvMap,R),blendCoef) * lambertTerm;
+		finalColor += mix(col,textureCube(EnvMap,R),blendCoef) * lambertTerm;
 	}	
 	gl_FragColor=finalColor;
 }

include/Utils/Shaders/shaderEnvMap.h

@@ -40,7 +40,11 @@ namespace CGoGN
 
 namespace Utils
 {
-
+/**
+ * Class for shader environment mapping (cube mapping)
+ *
+ * @warning shader code is GL2.0 compatible for GL3.0 replace textureCube by texture in fragment shader !
+ */
 class ShaderEnvMap : public ClippingShader
 {
 protected:
@@ -115,10 +119,22 @@ public:
 
 	unsigned int setAttributeNormal(VBO* vbo);
 
+
 	// optional attributes
 	unsigned int setAttributeColor(VBO* vbo);
 	void unsetAttributeColor();
 
+
+	/**
+	 * need to be called just before draw
+	 */
+	void predraw();
+
+	/**
+	 * need to be called just after draw
+	 */
+	void postdraw();
+
 	void setCubeMap(unsigned int sz, unsigned char* Xpos, unsigned char* Ypos, unsigned char* Zpos, unsigned char* Xneg, unsigned char* Yneg, unsigned char* Zneg);
 
 	/**
@@ -135,16 +151,17 @@ public:
 	/**
 	 * set colored plane for testing
 	 */
-	bool setCubeMapPipo();
+	bool setCubeMapColored();
 
+	/**
+	 * set colored plane for testing
+	 */
+	bool setCubeMapCheckered();
 
 #ifdef WITH_QT
 	bool setCubeMap(const std::string& filename);
 #endif
 
-	void predraw();
-
-	void postdraw();
 };
 
 } // namespace Utils