1 files changed, 1 insertions, 43 deletions
diff --git a/src/libjin/graphics/je_canvas.cpp b/src/libjin/graphics/je_canvas.cpp
index 8f216e6..831544d 100644
--- a/src/libjin/graphics/je_canvas.cpp
+++ b/src/libjin/graphics/je_canvas.cpp
@@ -10,9 +10,6 @@ namespace JinEngine
 	namespace Graphics
 	{
 
-		const Canvas* Canvas::current = nullptr;
-		const Canvas* const Canvas::DEFAULT_CANVAS = new Canvas(0);
-
 		Canvas* Canvas::createCanvas(int w, int h)
 		{
 			return new Canvas(w, h);
@@ -53,46 +50,7 @@ namespace JinEngine
 
 		bool Canvas::isBinded(const Canvas* cvs)
 		{
-			return current == cvs;
-		}
-
-		/**
-		* bind to canvas 
-		*/
-		void Canvas::bind(Canvas* canvas)
-		{
-			if (isBinded(canvas)) return;
-			current = canvas;
-			gl.bindFrameBuffer(canvas->fbo);
-			int w = canvas->getWidth(); 
-			int h = canvas->getHeight();
-			// Set view port to canvas.
-			glViewport(0, 0, w, h);
-			gl.setProjectionMatrix(0, w, 0, h, -1, 1);
-		}
-
-		/**
-		* bind to default screen render buffer. 
-		* do some coordinates transform work
-		* https://blog.csdn.net/liji_digital/article/details/79370841
-		* https://blog.csdn.net/lyx2007825/article/details/8792475
-		*/
-		void Canvas::unbind()
-		{
-			if (isBinded(DEFAULT_CANVAS)) return;
-			current = DEFAULT_CANVAS;
-			/* get window size as viewport */
-			Window* wnd = Window::get();
-			int w = wnd->getW();
-			int h = wnd->getH();
-
-			glBindFramebuffer(GL_FRAMEBUFFER, DEFAULT_CANVAS->fbo);
-
-			/* set viewport on screen */
-			glViewport(0, 0, w, h);
-
-			gl.setProjectionMatrix(0, w, h, 0, -1, 1);
-
+			return gl.getCanvas() == cvs;
 		}
 
 	} // namespace Graphics