Cocos2D 2.0 - Zillions of OpenGL errors

Question

I am transposing a Cocos2D project to 2.0. I have created a blank project using Cocos2D 2.0 template (the simple template without physics) and transferred all files from the old project to the blank project. I have also converted that to ARC. I compile and I see no errors. I run the app and it appears to be running correctly, but I have these errors on console... ``` MyApp[1266:707] cocos2d: animation stopped MyApp[1266:707] cocos2d: animation started with frame interval: 60.00 MyApp[1266:707] cocos2d: surface size: 640x960 MyApp[1266:707] cocos2d: surface size: 640x960 MyApp[1266:707] cocos2d: animation stopped MyApp[1266:707] cocos2d: animation started with frame interval: 60.00 MyApp[1266:707] failed to call context MyApp[1266:707] cocos2d: surface size: 640x960 MyApp[1266:707] Failed to make complete framebuffer object 0x8CDD OpenGL error 0x0506 in -[CCSprite draw] 532 OpenGL error 0x0502 in -[CCGLView swapBuffers] 280 MyApp[1266:707] failed to call context MyApp[1266:707] cocos2d…

Accepted Answer

OpenGL error 0x506 = GL_INVALID_FRAMEBUFFER_OPERATION

Main difference between Cocos2D 2.0 and Cocos2D 1.0 is OpenGLES version. Cocos2D 2.0 uses OpenGLES 2.0 and Cocos2D 1.0 uses OpenGLES 1.0.

I guess you may used API that is not found in OpenGLES2.0 that found in OpenGLES 1.0

Example:GLBegin(), GLLineWidth() etc

Use this draw function:

```
-(void) draw
{
    [super draw];
    ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position );
    kmGLPushMatrix();
    self.world->DrawDebugData();    
    kmGLPopMatrix();
}
```

Instead of this:

```
-(void) draw
{
    glDisable(GL_TEXTURE_2D);
    glDisableClientState(GL_COLOR_ARRAY);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);

world->DrawDebugData();

// restore default GL states
    glEnable(GL_TEXTURE_2D);
    glEnableClientState(GL_COLOR_ARRAY);
    glEnableClientState(GL_TEXTURE_COORD_ARRAY);

}
```

Also use GLES-Render.h and GLES-Render.m from Cocos2D 2.0

Cocos2D 2.0 - Zillions of OpenGL errors

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