Create a CVPixelBufferRef with OpenGLCompatibility - objective-c

Question

I am trying to create a CVPixelBuffer to allocate a bitmap in it and bind it to an OpenGL texture under IOS 5, but I having some problems on it. I can generate the pixel buffer but the IOSurface is always null, so I can not use it with CVOpenGLESTextureCacheCreateTextureFromImage. Since I am not using a Camera or a Video, but an self generated bitmap I can not use CVSampleBufferRef to get the pixel buffer from it.
I let you my code in case some of you knows how to solve this issue.
CVPixelBufferRef renderTarget = nil;
CFDictionaryRef empty; // empty value for attr value.
CFMutableDictionaryRef attrs;
empty = CFDictionaryCreate(kCFAllocatorDefault, // our empty IOSurface properties dictionary
NULL,
NULL,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
attrs = CFDictionaryCreateMutable(kCFAllocatorDefault,
2,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(attrs,
kCVPixelBufferIOSurfacePropertiesKey,
empty);
CFDictionarySetValue(attrs, kCVPixelBufferOpenGLCompatibilityKey, [NSNumber numberWithBool:YES]);
CVReturn err = CVPixelBufferCreateWithBytes(kCFAllocatorDefault, tmpSize.width, tmpSize.height, kCVPixelFormatType_32ARGB, imageData, tmpSize.width*4, 0, 0, attrs, &renderTarget);
If I dump the new PixelBufferRef I get:
1 : <CFString 0x3e43024c [0x3f8f8650]>{contents = "OpenGLCompatibility"} = <CFBoolean 0x3f8f8a10 [0x3f8f8650]>{value = true}
2 : <CFString 0x3e43026c [0x3f8f8650]>{contents = "IOSurfaceProperties"} = <CFBasicHash 0xa655750 [0x3f8f8650]>{type = immutable dict, count = 0,
entries =>
}
}
And I get an -6683 error (kCVReturnPixelBufferNotOpenGLCompatible) if I try to use it with a TextureCache, this way:
CVOpenGLESTextureCacheCreateTextureFromImage (
kCFAllocatorDefault,
self.eagViewController.textureCache,
renderTarget,
nil, // texture attributes
GL_TEXTURE_2D,
GL_RGBA, // opengl format
tmpSize.width,
tmpSize.height,
GL_BGRA, // native iOS format
GL_UNSIGNED_BYTE,
0,
&renderTextureTemp);