#define GLFW_INCLUDE_NONE
#include "XCEngine/RHI/OpenGL/OpenGLDepthStencilView.h"
#include <glad/glad.h>
#include <GLFW/glfw3.h>

namespace XCEngine {
namespace RHI {

OpenGLDepthStencilView::OpenGLDepthStencilView() : m_texture(0), m_framebuffer(0), m_mipLevel(0) {
}

OpenGLDepthStencilView::~OpenGLDepthStencilView() {
}

bool OpenGLDepthStencilView::Initialize(unsigned int texture, int mipLevel) {
    m_texture = texture;
    m_mipLevel = mipLevel;

    glGenFramebuffers(1, &m_framebuffer);
    glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, texture, mipLevel);
    
    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
        return false;
    }
    
    glBindFramebuffer(GL_FRAMEBUFFER, 0);
    return true;
}

void OpenGLDepthStencilView::Shutdown() {
    if (m_framebuffer) {
        glDeleteFramebuffers(1, &m_framebuffer);
        m_framebuffer = 0;
    }
}

void OpenGLDepthStencilView::Bind() {
    glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
}

void OpenGLDepthStencilView::Unbind() {
    glBindFramebuffer(GL_FRAMEBUFFER, 0);
}

} // namespace RHI
} // namespace XCEngine