Can not re-enable the shader program.

[JacobMango]

To re-enable the shader you would have to re create the shader again which I believe is bad and hurts CPU and GPU performance.

EDIT: I should mention I copied the code directly from here. "Stealing" as you stated.

[JacobMango]

I have to constantly re create the program every glUseProgram.

[TheCherno]

How are you recreating the program? Post some code. I'm not sure what you mean.

[JacobMango]

I mean that I have to re call the load method every frame.

GLint Shader::load() {
    GLuint program = glCreateProgram();
    GLuint vertex = glCreateShader(GL_VERTEX_SHADER);
    GLuint fragment = glCreateShader(GL_FRAGMENT_SHADER);
    std::string vertSourceString = utils::FileUtils::read_file(m_VertPath);
    std::string fragSourceString = utils::FileUtils::read_file(m_FragPath);
    const char* vertSource = vertSourceString.c_str();
    const char* fragSource = fragSourceString.c_str();
    glShaderSource(vertex, 1, &vertSource, NULL);
    glCompileShader(vertex);
    GLint result;
    glGetShaderiv(vertex, GL_COMPILE_STATUS, &result);
    if (result == GL_FALSE) {
        GLint length;
        glGetShaderiv(vertex, GL_INFO_LOG_LENGTH, &length);
        std::vector<char> error(length);
        glGetShaderInfoLog(vertex, length, &length, &error[0]);
        std::cout << "Failed to compile vertex shader!" << std::endl << &error[0] << std::endl;
        glDeleteShader(vertex);
        return 0;
    }
    glShaderSource(fragment, 1, &fragSource, NULL);
    glCompileShader(fragment);
    glGetShaderiv(fragment, GL_COMPILE_STATUS, &result);
    if (result == GL_FALSE){
        GLint length;
        glGetShaderiv(fragment, GL_INFO_LOG_LENGTH, &length);
        std::vector<char> error(length);
        glGetShaderInfoLog(fragment, length, &length, &error[0]);
        std::cout << "Failed to compile fragment shader!" << std::endl << &error[0] << std::endl;
        glDeleteShader(fragment);
        return 0;
    }
    glAttachShader(program, vertex);
    glAttachShader(program, fragment);
    glLinkProgram(program);
    glValidateProgram(program);
    glDeleteShader(vertex);
    glDeleteShader(fragment);
    return program;
}

void Shader::start() {
    if (glIsProgram(m_ShaderID) == GL_FALSE) {
        load();
    }
    glUseProgram(m_ShaderID);
}

void Shader::stop() {
    glUseProgram(0);
}

[TheCherno]

Yes, but why are you checking for loading in false? This isn't Sparky code. Please post your own code to http://thecherno.com/forums in the Sparky General section.

[JacobMango]

Refresh the page

[JacobMango]

I am checking that because it keeps deleting the program.