优化着色器类型判断逻辑，优化dxc编译器检查代码

code_generator.py

@@ -90,7 +90,8 @@ class CodeGenerator:
             writer.write()
             self._write_shader_bindings_class(writer, binding_infos)
             writer.write()
-            if len(binding_infos) == 2:
+            # 查找是否有像素着色器或计算着色器的处理
+            if any(info['stage'] == ShaderStage.FRAGMENT.value for info in binding_infos):
                 self._write_handle_class(writer, 'pixel_shader_handle_t', binding_infos)
             else:
                 self._write_handle_class(writer, 'compute_shader_handle_t', binding_infos)

exe_finder.py

@@ -105,3 +105,10 @@ if os.name == 'nt':
     else:
         # 如果没有找到dxcapsviewer.exe，尝试直接查找dxc.exe
         dxc_path = shutil.which('dxc.exe')
+
+    # 检查是否有dxil.dll
+    if dxc_path:
+        dxil_dll_path = os.path.join(os.path.dirname(dxc_path), 'dxil.dll')
+        if not os.path.isfile(dxil_dll_path):
+            print("Warning: dxil.dll not found in the same directory as dxc.exe.")
+            dxc_path = None