createProgramFromShaderSrc

public static int createProgramFromShaderSrc(String vertexShaderSrc,
                                                 String fragmentShaderSrc)
    {
        int vertShader = initShader(GLES20.GL_VERTEX_SHADER, vertexShaderSrc);
        int fragShader = initShader(GLES20.GL_FRAGMENT_SHADER,
                fragmentShaderSrc);

        if (vertShader == 0 || fragShader == 0)
            return 0;

        int program = GLES20.glCreateProgram();
        if (program != 0)
        {
            GLES20.glAttachShader(program, vertShader);
            checkGLError("glAttchShader(vert)");

            GLES20.glAttachShader(program, fragShader);
            checkGLError("glAttchShader(frag)");

            GLES20.glLinkProgram(program);
            int[] glStatusVar = { GLES20.GL_FALSE };
            GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, glStatusVar,
                    0);
            if (glStatusVar[0] == GLES20.GL_FALSE)
            {
                Log.e (Constants.VUFORIA_LOG,
                        "Could NOT link program : "
                                + GLES20.glGetProgramInfoLog(program));
                GLES20.glDeleteProgram(program);
                program = 0;
            }
        }
        return program;
    }