protected boolean isVarying(ShaderGenerationInfo info, ShaderNodeVariable v) {
        boolean isVarying = false;
        for (ShaderNodeVariable shaderNodeVariable : info.getVaryings()) {
            if (shaderNodeVariable.equals(v)) {
                isVarying = true;
            }
        }
        return isVarying;
    }
Finds if a variable is a varying
@param info the ShaderGenerationInfo
@param v the variable
@return true is the given variable is a varying
jme3-core/src/main/java/com/jme3/shader/Glsl100ShaderGenerator.java