void FrameBuffer::create() {
    if (dynamicSize) {
        width = WindowOpengl::getInstance()->getWidth();
        height = WindowOpengl::getInstance()->getHeight();
    }

    //Framebuffer generate
    glGenFramebuffers(1, &frameBuffer);
    glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);

    //Texture generate
    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);

    glGenRenderbuffers(1, &depthBuffer);
    glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);
    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer);

    glGenTextures(1, &depthTexture);
    glBindTexture(GL_TEXTURE_2D, depthTexture);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
    glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8_EXT, width, height, 0, GL_DEPTH_STENCIL_EXT, GL_UNSIGNED_INT_24_8_EXT, NULL);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthTexture, 0);

    GLenum drawBuffers[2] = {GL_COLOR_ATTACHMENT0, GL_DEPTH_ATTACHMENT};
    glDrawBuffers(2, drawBuffers);
    checkStatus();
    created = true;
}


void FrameBuffer::bind() {
    if (!created) create();
    if (!dynamicSize) {
        glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);
        glViewport(0, 0, width, height);
    } else {
        glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);
        WindowOpengl *globalWindow = WindowOpengl::getInstance();
        glViewport(0, 0, globalWindow->getWidth(), globalWindow->getHeight());
    }
}

void FrameBuffer::unbind(int width, int height) {
    if (!main) {
        FrameBuffer::getMainBuffer()->bind();
    } else {
        glBindFramebuffer(GL_FRAMEBUFFER, 0);
        glViewport(0, 0, width, height);
    }
}

GLuint FrameBuffer::getTextureIndex() {
    return texture;
}