From aee4ae88db183ead7224b4d4b851b33f4ee17ab1 Mon Sep 17 00:00:00 2001
From: ssdfasd <2156608475@qq.com>
Date: Mon, 16 Mar 2026 18:48:12 +0800
Subject: [PATCH] Add OpenGLFence

---
 engine/CMakeLists.txt                         |  2 +
 .../include/XCEngine/RHI/OpenGL/OpenGLFence.h | 30 +++++++++++++
 engine/src/RHI/OpenGL/OpenGLFence.cpp         | 43 +++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 engine/include/XCEngine/RHI/OpenGL/OpenGLFence.h
 create mode 100644 engine/src/RHI/OpenGL/OpenGLFence.cpp

diff --git a/engine/CMakeLists.txt b/engine/CMakeLists.txt
index 5bbdbd33..6c92b268 100644
--- a/engine/CMakeLists.txt
+++ b/engine/CMakeLists.txt
@@ -134,6 +134,7 @@ add_library(XCEngine STATIC
     include/XCEngine/RHI/OpenGL/OpenGLPipelineState.h
     include/XCEngine/RHI/OpenGL/OpenGLCommandList.h
     include/XCEngine/RHI/OpenGL/OpenGLSwapChain.h
+    include/XCEngine/RHI/OpenGL/OpenGLFence.h
     src/RHI/OpenGL/OpenGLDevice.cpp
     src/RHI/OpenGL/OpenGLShader.cpp
     src/RHI/OpenGL/OpenGLBuffer.cpp
@@ -142,6 +143,7 @@ add_library(XCEngine STATIC
     src/RHI/OpenGL/OpenGLPipelineState.cpp
     src/RHI/OpenGL/OpenGLCommandList.cpp
     src/RHI/OpenGL/OpenGLSwapChain.cpp
+    src/RHI/OpenGL/OpenGLFence.cpp
 )
 
 target_include_directories(XCEngine PUBLIC
diff --git a/engine/include/XCEngine/RHI/OpenGL/OpenGLFence.h b/engine/include/XCEngine/RHI/OpenGL/OpenGLFence.h
new file mode 100644
index 00000000..12e7d7dc
--- /dev/null
+++ b/engine/include/XCEngine/RHI/OpenGL/OpenGLFence.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <GLFW/glfw3.h>
+#include <cstdint>
+
+namespace XCEngine {
+namespace RHI {
+
+class OpenGLFence {
+public:
+    OpenGLFence();
+    ~OpenGLFence();
+
+    bool Initialize();
+    void Shutdown();
+
+    void Signal();
+    void Wait();
+    void Reset();
+
+    bool IsSignaled() const;
+
+private:
+    unsigned int m_fence;
+    int64_t m_fenceValue;
+    bool m_signaled;
+};
+
+} // namespace RHI
+} // namespace XCEngine
diff --git a/engine/src/RHI/OpenGL/OpenGLFence.cpp b/engine/src/RHI/OpenGL/OpenGLFence.cpp
new file mode 100644
index 00000000..8d914d63
--- /dev/null
+++ b/engine/src/RHI/OpenGL/OpenGLFence.cpp
@@ -0,0 +1,43 @@
+#define GLFW_INCLUDE_NONE
+#include "XCEngine/RHI/OpenGL/OpenGLFence.h"
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+#include <thread>
+#include <chrono>
+
+namespace XCEngine {
+namespace RHI {
+
+OpenGLFence::OpenGLFence() : m_fence(0), m_fenceValue(0), m_signaled(false) {
+}
+
+OpenGLFence::~OpenGLFence() {
+}
+
+bool OpenGLFence::Initialize() {
+    return true;
+}
+
+void OpenGLFence::Shutdown() {
+}
+
+void OpenGLFence::Signal() {
+    glFinish();
+    m_signaled = true;
+    m_fenceValue++;
+}
+
+void OpenGLFence::Wait() {
+    glFinish();
+}
+
+void OpenGLFence::Reset() {
+    m_signaled = false;
+}
+
+bool OpenGLFence::IsSignaled() const {
+    return m_signaled;
+}
+
+} // namespace RHI
+} // namespace XCEngine