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I have found this bug too (GL_COLOR_ATTACHMENT0 + ((int)type - 2);), and fix it,
I also replace

render->bindFrameBuffer(0);

with

unsigned int currentFrameBuffer = 0;
render->getCurrentFrameBuffer(&currentFrameBuffer);
render->bindFrameBuffer(currentFrameBuffer);

but program continue to  run with red/black screen.
I have found that after

    render->texImage(0, [UIScreen mainScreen].bounds.size.width,  [UIScreen mainScreen].bounds.size.height, M_UBYTE, M_DEPTH, 0);

in MyGame:MyGame() call to glGetError() returns 0x500   (1280 in dec), GL_INVALID_ENUM.
I was not able to fix it yet.

If you have a working code of post processing on iOS ,can you post it please?

Also

unsigned int currentFrameBuffer = 0;
render->getCurrentFrameBuffer(&currentFrameBuffer);
render->bindFrameBuffer(currentFrameBuffer);

sets the frame buffer to m_renderBufferId, which is used to render into textures.
I think we need to set

render->bindFrameBuffer(1);

to make it work.

Ok, I will try

Where should I check for them?

I've changed shader to include #ifdef GL_ES ... and placed

MGame *game = new MyGame();
engine->setGame(game);

after loadMaratisProject.
Also, I set  [UIScreen mainScreen].bounds.size.height and ...width instead of  RESOL macro in MyGame.cpp  :

render->texImage(0, [UIScreen mainScreen].bounds.size.width , [UIScreen mainScreen].bounds.size.height, M_UBYTE, M_RGB, 0);
...
render->texImage(0, [UIScreen mainScreen].bounds.size.width , [UIScreen mainScreen].bounds.size.height, M_UBYTE, M_RGB, 0);
...
render->setViewport(0, 0,  [UIScreen mainScreen].bounds.size.width,  [UIScreen mainScreen].bounds.size.height);

Program runs , there is no errors in console.
Screen remains black.
Program responds on touches - messages like "2012-08-30 10:23:20.941 example[9002:707] Updated Touch 0 at position 651, 259." appears in the console.
I will try to compare code of MGame::draw() and MyGame::draw() and change the latter.
Can you give me a quick tip how to do that correctly?

Also, when I launch program with MyGame, when the device changes its orientation, message
"Failed to make complete framebuffer object 8cdd" appears in the console.
When I launch project with MGame, all works fine and there is no such message

Ok, thanks

In realization of DoF that I use blur size stored in alpha component of each fragment
vsh:

precision mediump float;

attribute vec2 a_texcoord;
varying vec2 v_texcoord;

varying float z;

void main(void)
{
    vec4 pos = ModelViewProjectionMatrix * gl_Vertex;

    z               = pos.z;
    v_texcoord = a_texcoord;
    gl_Position     = pos;
}

fsh:

precision mediump float;

uniform sampler2D tex;
uniform float focalDistance, focalRange;

varying float z;
varying vec2 v_texcoord;

void main (void)
{
    float    blur = clamp ( abs ( focalDistance  + z ) / focalRange, 0.0, 1.0 );
    gl_FragColor = vec4 ( texture2D ( tex, v_texcoord ).rgb, blur );
}

This is the first shader, which applied while drawing meshes.

The in last three shaders information in alpha component of pixel is used to make blur.

Thanks!
I want to add post processing Depth of Field effect in my app.
My current realization of that effect consist of 4 shaders.
First shader must be applied when drawing meshes.
Last three shaders must be applied to entire screen image consequentially.
As I realized, I must apply first shader  as you described in post above,
and last three must be applied as you show in Post Process example in http://www.maratis3d.com/code/post-process/.
Is that way right?
Or may be exist more simple and correct way to add this effect to app?