axmol/cocos2dx/include/CCRenderTexture.h

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#ifndef __CCRENDER_TEXTURE_H__
#define __CCRENDER_TEXTURE_H__

#include "CCNode.h"
#include "CCSprite.h"

namespace cocos2d {
	enum tImageFormat
	{
		kImageFormatJPG = 0,
		kImageFormatPNG = 1
	};
	/**
	RenderTexture is a generic rendering target. To render things into it,
	simply construct a render target, call begin on it, call visit on any cocos
	scenes or objects to render them, and call end. For convienience, render texture
	adds a sprite as it's display child with the results, so you can simply add
	the render texture to your scene and treat it like any other CocosNode.
	There are also functions for saving the render texture to disk in PNG or JPG format.

	@since v0.8.1
	*/
	class CCX_DLL CCRenderTexture : public CCNode 
	{
		/** sprite being used */
		CCX_PROPERTY(CCSprite*, m_pSprite, Sprite)
	public:
		CCRenderTexture(){}
		virtual ~CCRenderTexture();
		/** creates a RenderTexture object with width and height */
		static CCRenderTexture *renderTextureWithWidthAndHeight(int width, int height);
		/** initializes a RenderTexture object with width and height */
		bool initWithWidthAndHeight(int width, int height);
		void begin();
		void end();
		/** get buffer as UIImage */
		UIImage *getUIImageFromBuffer();
		/** saves the texture into a file */
		bool saveBuffer(const char *name);
		/** saves the texture into a file. The format can be JPG or PNG */
		bool saveBuffer(const char *name, int format);
		/** clears the texture with a color */
		void clear(float r, float g, float b, float a);
	protected:
		GLuint				m_uFBO;
		GLint				m_nOldFBO;
		CCTexture2D*		m_pTexture;
	};
} // namespace cocos2d
#endif //__CCRENDER_TEXTURE_H__