From e47baca4f23db43ec91fbf64d5d06d7c0dbee495 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 6 Apr 2019 07:39:49 +0800
Subject: *misc

---
 source/modules/asura-core/graphics/gl.h | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 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 6838bc9..e3c2ffc 100644
--- a/source/modules/asura-core/graphics/gl.h
+++ b/source/modules/asura-core/graphics/gl.h
@@ -18,6 +18,7 @@ namespace AsuraEngine
 
 		class Profiler;
 		class Shader;
+		class GPUBuffer;
 
 		enum MatrixMode
 		{
@@ -35,17 +36,23 @@ namespace AsuraEngine
 		{
 		public:
 
-			LUAX_DECL_SINGLETON(GL);
-
 			OpenGL();
 			~OpenGL();
 
+			///
+			/// 初始化OpenGL上下文参数，发生在创建OpenGL上下文之后。此函数会注册OpenGL函数的地址。
+			///
+			bool Init(const AEMath::Recti& viewport);
+
 			void SetViewport(const AEMath::Recti viewport);
-			AEMath::Recti GetViewport();
+			const AEMath::Recti& GetViewport();
 
 			void UseShader(Shader* shader);
 			void UnuseShader();
 
+			///
+			/// Matrix stack相关操作
+			///
 			void SetMatrixMode(MatrixMode mode);
 			MatrixMode GetMatrixMode();
 			void PushMatrix();
@@ -59,6 +66,13 @@ namespace AsuraEngine
 			uint GetMatrixDepth();
 			uint GetMatrixIndex();
 
+			///
+			/// 清理错误提示
+			///
+			void WipeError();
+			bool HasError();
+			GLenum GetError();
+
 			/// 
 			/// OpenGL3.0以后由用户管理矩阵变换、视口、shader等参数，这里保存一些OpenGL状态。注意
 			/// 似乎全进程的，也就是说，Asura不支持多线程渲染。OpenGL上下文的创建使得一个上下
@@ -78,6 +92,8 @@ namespace AsuraEngine
 
 			friend class Profiler;
 
+			LUAX_DECL_SINGLETON(OpenGL);
+
 			//----------------------------------------------------------------------------//
 
 			LUAX_DECL_ENUM(MatrixMode, 0);
-- 
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