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/libs/asura-lib-core/graphics/canvas.h | 83 ++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 source/libs/asura-lib-core/graphics/canvas.h

(limited to 'source/libs/asura-lib-core/graphics/canvas.h')

diff --git a/source/libs/asura-lib-core/graphics/canvas.h b/source/libs/asura-lib-core/graphics/canvas.h
new file mode 100644
index 0000000..5b188ca
--- /dev/null
+++ b/source/libs/asura-lib-core/graphics/canvas.h
@@ -0,0 +1,83 @@
+#ifndef __ASURA_ENGINE_CANVAS_H__
+#define __ASURA_ENGINE_CANVAS_H__
+
+#include <asura-lib-utils/scripting/portable.hpp>
+#include <asura-lib-utils/math/rect.hpp>
+#include <asura-lib-utils/math/vector2.hpp>
+
+#include "gl.h"
+#include "texture.h"
+#include "render_target.h"
+#include "render_state.h"
+
+namespace AsuraEngine
+{
+	namespace Graphics
+	{
+
+		///
+		/// Canvas也可以称为render texture，自身也可以作为texture渲染。
+		///
+		class Canvas ASURA_FINAL
+			: public Drawable
+			, public RenderTarget
+			, public Scripting::Portable<Canvas>
+		{
+		public:
+
+			Canvas();
+
+			~Canvas();
+
+			///
+			/// 设置render texture的大小
+			///
+			void SetSize(uint w, uint h);
+
+			void Clear(const Color& col = Color::Black) override;
+
+			void Clear(const Math::Recti& quad, const Color& col = Color::Black) override;
+
+			void Render(const RenderTarget* rt, const Math::Vector2i& pos, const Math::Vector2i& scale, const Math::Vector2i& center, float rot);
+
+			void Render(const RenderTarget* rt, const Math::Rectf& quad, const Math::Vector2i& pos, const Math::Vector2i& scale, const Math::Vector2i& center, float rot);
+
+			void Draw(const Drawable* texture, const RenderState& state);
+
+			void Draw(const Drawable* texture, const Math::Recti& quad, const RenderState& state);
+
+		private:
+
+			///
+			/// Frame buffer object id.
+			///
+			GLuint mFBO;
+
+			///
+			/// canvas的大小
+			///
+			uint mWidth, mHeight;
+
+		public:
+
+			//----------------------------------------------------------------------------------------------------------
+
+			LUAX_DECL_FACTORY(SimCanvas);
+
+			LUAX_DECL_METHOD(_SetSize);
+			LUAX_DECL_METHOD(_Bind);
+			LUAX_DECL_METHOD(_Unbind);
+
+			//----------------------------------------------------------------------------------------------------------
+
+		};
+
+		///
+		/// Canvas别名为RenderTexture
+		///
+		using RenderTexture = Canvas;
+
+	}
+}
+
+#endif
\ No newline at end of file
-- 
cgit v1.1-26-g67d0