gistfile1.m

@implementation NodeRenderer

+(id)renderTextureWithNode:(CCNode*)node width:(int)w height:(int)h
{
  return [[[self alloc] initWithNode:node width:w height:h pixelFormat:kCCTexture2DPixelFormat_RGBA8888 depthStencilFormat:0] autorelease];
}

-(id) initWithNode:(CCNode*)n width:(int)w height:(int)h pixelFormat:(CCTexture2DPixelFormat)format depthStencilFormat:(GLuint)depthStencilFormat {
    if(self = [super initWithWidth:w height:h pixelFormat:format]) {
        [self addChild:n];
        
        // Set blending function (for fading)
        [self.sprite setBlendFunc:(ccBlendFunc){GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA}] ;
        
        // Schedule update of the texture
        [self schedule:@selector(renderChildren)];
        
        [self renderChildren];
    }
    return self;
}

-(void) renderChildren {
    [self begin];
    for(int i=0; i<self.children.count; i++) {
        [[self.children objectAtIndex:i] visit];
    }
    [self end];
}

@end