Engine: 添加 /FS 标志修复 MSVC PDB 冲突问题

- 在 CMakeLists.txt 中为 MSVC 编译选项添加 /FS 标志
- 添加 OpenGL Screenshot 模块支持

engine/CMakeLists.txt

@@ -155,6 +155,7 @@ add_library(XCEngine STATIC
     ${CMAKE_CURRENT_SOURCE_DIR}/src/RHI/OpenGL/OpenGLRenderTargetView.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/RHI/OpenGL/OpenGLDepthStencilView.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/RHI/OpenGL/OpenGLScreenshot.cpp
+    ${CMAKE_SOURCE_DIR}/tests/OpenGL/package/src/glad.c
 
     # RHI Factory
     ${CMAKE_CURRENT_SOURCE_DIR}/src/RHI/RHIFactory.cpp
@@ -254,7 +255,7 @@ target_include_directories(XCEngine PUBLIC
 )
 
 if(MSVC)
-    target_compile_options(XCEngine PRIVATE /W3)
+    target_compile_options(XCEngine PRIVATE /W3 /FS)
 else()
     target_compile_options(XCEngine PRIVATE -Wall)
 endif()

engine/include/XCEngine/RHI/OpenGL/OpenGLScreenshot.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+namespace XCEngine {
+namespace RHI {
+
+class OpenGLSwapChain;
+class OpenGLDevice;
+
+class OpenGLScreenshot {
+public:
+    static bool Capture(OpenGLDevice& device,
+                        OpenGLSwapChain& swapChain,
+                        const char* filename);
+    
+    static bool Capture(OpenGLDevice& device,
+                        OpenGLSwapChain& swapChain,
+                        const char* filename,
+                        int width,
+                        int height);
+
+private:
+    static bool SavePPM(const char* filename, 
+                        int width, int height);
+};
+
+} // namespace RHI
+} // namespace XCEngine

engine/src/RHI/OpenGL/OpenGLScreenshot.cpp

@@ -0,0 +1,71 @@
+#include "XCEngine/RHI/OpenGL/OpenGLScreenshot.h"
+#include "XCEngine/RHI/OpenGL/OpenGLDevice.h"
+#include "XCEngine/RHI/OpenGL/OpenGLSwapChain.h"
+#include "XCEngine/Debug/Logger.h"
+#include "XCEngine/Debug/ConsoleLogSink.h"
+#include "XCEngine/Containers/String.h"
+
+#include <glad/glad.h>
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+using namespace XCEngine::Debug;
+
+namespace XCEngine {
+namespace RHI {
+namespace {
+
+bool SavePPM(const char* filename, int width, int height) {
+    unsigned char* pixels = (unsigned char*)malloc(width * height * 3);
+    if (!pixels) {
+        Logger::Get().Error(LogCategory::Rendering, "[OpenGLScreenshot] Failed to allocate pixel buffer");
+        return false;
+    }
+
+    glFinish();
+    glReadBuffer(GL_BACK);
+    glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    glPixelStorei(GL_PACK_ROW_LENGTH, 0);
+    glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+    glPixelStorei(GL_PACK_SKIP_ROWS, 0);
+    glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels);
+
+    FILE* f = fopen(filename, "wb");
+    if (!f) {
+        Logger::Get().Error(LogCategory::Rendering, "[OpenGLScreenshot] Failed to open file");
+        free(pixels);
+        return false;
+    }
+
+    fprintf(f, "P6\n%d %d\n255\n", width, height);
+
+    unsigned char* row = (unsigned char*)malloc(width * 3);
+    for (int y = height - 1; y >= 0; y--) {
+        memcpy(row, pixels + y * width * 3, width * 3);
+        fwrite(row, 1, width * 3, f);
+    }
+
+    free(row);
+    free(pixels);
+    fclose(f);
+
+    Logger::Get().Debug(LogCategory::Rendering, "[OpenGLScreenshot] Screenshot saved");
+    return true;
+}
+
+} // anonymous namespace
+
+bool OpenGLScreenshot::Capture(OpenGLDevice& device, OpenGLSwapChain& swapChain, const char* filename) {
+    return Capture(device, swapChain, filename, swapChain.GetWidth(), swapChain.GetHeight());
+}
+
+bool OpenGLScreenshot::Capture(OpenGLDevice& device, OpenGLSwapChain& swapChain, const char* filename, int width, int height) {
+    (void)device;
+    (void)swapChain;
+    return SavePPM(filename, width, height);
+}
+
+} // namespace RHI
+} // namespace XCEngine