feat(渲染): 添加内置着色器管理和安装功能

- 移除font.shader中u_smoothing的默认值
- 添加xmake.lua中的着色器安装函数，支持不同平台
- 在渲染模块初始化时初始化ShaderManager并加载内置着色器
- 在渲染模块关闭时清理ShaderManager资源

Extra2D/shaders/builtin/font.shader

@@ -41,7 +41,7 @@ in vec2 v_texCoord;
 in vec4 v_color;
 
 uniform sampler2D u_texture;
-uniform float u_smoothing = 0.1;
+uniform float u_smoothing;
 
 out vec4 fragColor;
 

Extra2D/src/graphics/render_module.cpp

@@ -1,5 +1,7 @@
 #include <extra2d/graphics/render_module.h>
 #include <extra2d/config/module_registry.h>
+#include <extra2d/graphics/opengl/gl_shader_new.h>
+#include <extra2d/graphics/shader_manager.h>
 #include <extra2d/platform/iwindow.h>
 #include <extra2d/utils/logger.h>
 #include <nlohmann/json.hpp>
@@ -145,6 +147,15 @@ bool RenderModuleInitializer::initialize(const IModuleConfig* config) {
         E2D_LOG_ERROR("Render module requires window to be set");
         return false;
     }
+
+    auto shaderFactory = std::make_shared<GLShaderFactory>();
+    if (!ShaderManager::getInstance().init(shaderFactory, "extra2d")) {
+        E2D_LOG_WARN("Failed to initialize ShaderManager with default paths");
+    }
+
+    if (!ShaderManager::getInstance().loadBuiltinShaders()) {
+        E2D_LOG_WARN("Failed to load some builtin shaders");
+    }
     
     renderer_ = RenderBackend::create(renderConfig->backend);
     if (!renderer_) {
@@ -171,6 +182,8 @@ void RenderModuleInitializer::shutdown() {
         renderer_.reset();
     }
     
+    ShaderManager::getInstance().shutdown();
+    
     initialized_ = false;
     E2D_LOG_INFO("Render module shutdown");
 }

xmake.lua

@@ -95,6 +95,32 @@ includes("xmake/engine.lua")
 -- 定义引擎库
 define_extra2d_engine()
 
+-- ==============================================
+-- Shader文件安装函数
+-- ==============================================
+
+function install_shaders(target)
+    local plat = get_config("plat") or os.host()
+    local targetdir = target:targetdir()
+    
+    local shader_src = "Extra2D/shaders"
+    
+    if plat == "switch" then
+        local romfs_dir = path.join(targetdir, "romfs")
+        local shader_dest = path.join(romfs_dir, "shaders")
+        
+        os.rm(shader_dest)
+        os.cp(shader_src, shader_dest)
+        print("Shaders installed to romfs: " .. shader_dest)
+    else
+        local shader_dest = path.join(targetdir, "shaders")
+        
+        os.rm(shader_dest)
+        os.cp(shader_src, shader_dest)
+        print("Shaders installed to: " .. shader_dest)
+    end
+end
+
 -- ==============================================
 -- 示例程序
 -- ==============================================
@@ -113,5 +139,7 @@ target("demo_basic")
         add_packages("glm", "nlohmann_json", "libsdl2")
         add_syslinks("opengl32", "glu32", "winmm", "imm32", "version", "setupapi")
     end
+    
+    -- 构建后安装Shader文件
+    after_build(install_shaders)
 target_end()
-