From 250e30d73f09e9da2b5a81d0fbae63744ae12a73 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Tue, 2 Apr 2019 08:47:15 +0800
Subject: *misc

---
 source/modules/asura-core/graphics/gl.h | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'source/modules/asura-core/graphics/gl.h')

diff --git a/source/modules/asura-core/graphics/gl.h b/source/modules/asura-core/graphics/gl.h
index bfc60ea..4d21a5a 100644
--- a/source/modules/asura-core/graphics/gl.h
+++ b/source/modules/asura-core/graphics/gl.h
@@ -1,7 +1,9 @@
 #ifndef __ASURA_ENGINE_OPENGL_H__
 #define __ASURA_ENGINE_OPENGL_H__
 
-#include "glad/glad.h"
+#include <asura-utils/math/rect.hpp>
+
+#include <glad/glad.h>
 
 namespace AsuraEngine
 {
@@ -11,7 +13,9 @@ namespace AsuraEngine
 		class Profiler;
 
 		///
-		/// 用来做一些opengl状态的追踪。
+		/// 用来做一些opengl状态的追踪。在编辑器多窗口环境下，一个窗口对应一个hwnd，一个hdc，以及
+		/// 数个opengl context，如果使用wglMakeCurrent(hdc, glc)指定当前线程耳朵渲染窗口hdc和
+		/// opengl上下文glc，gl中记录的就是任意一个线程的任意一个窗口的任意一个opengl上下文的状态，
 		///
 		class OpenGL
 		{
@@ -19,6 +23,9 @@ namespace AsuraEngine
 			OpenGL();
 			~OpenGL();
 
+			void SetViewport(const AEMath::Recti viewport);
+			AEMath::Recti GetViewport();
+
 		private:
 
 			friend class Profiler;
@@ -28,6 +35,14 @@ namespace AsuraEngine
 			/// 
 			static bool instantiated;
 
+			///
+			/// 记录opengl状态。
+			/// 
+			struct
+			{
+				AEMath::Recti viewport;
+			} state;
+
 		};
 
 		///
-- 
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