iOS OPENGL Texture GL_REPEAT repeats only two times - ios

Question

I have a OpenGL program for iOS.
I would like to have a repeated texture. Normaly this is not a big deal for me, because GL_REPEAT does a fine job.
You can see the problem comparing the next two images:
First image is simulator screenshot. Everything works fine.
Second image is iPad screenshot. The textur will be repeated once and the clamped to edge.
Notice that the image is repeated 4 times in each direction. The red area is the area where the texture coordinate in a direction is > 1.0. So the device shows the image (normal area) repeats the image (red area) and than clamps the image.
So I will show what I do to render the Quad.
I setup the texture
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
_location = location;
_texture = [self setupTextureByUIImage:[UIImage imageNamed:name]];
_uniform = uniform;
The setUpTextureByUIImage function is
- (GLuint) setupTextureByUIImage: (UIImage*) image {
// We want to display images
glActiveTexture(_location);
GLuint texture;
// Generate textures
glGenTextures(1, &texture);
// Bind it
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
// Get Image size
GLuint width = CGImageGetWidth(image.CGImage);
GLuint height = CGImageGetHeight(image.CGImage);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
// Allocate memory for image
void *imageData = malloc( height * width * 4 );
CGContextRef imgcontext = CGBitmapContextCreate( imageData, width, height, 8, 4 * width, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big );
CGColorSpaceRelease( colorSpace );
CGContextClearRect( imgcontext, CGRectMake( 0, 0, width, height ) );
CGContextTranslateCTM( imgcontext, 0, height - height );
CGContextDrawImage( imgcontext, CGRectMake( 0, 0, width, height ), image.CGImage );
// Generate texture in opengl
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);
// Release context
CGContextRelease(imgcontext);
// Free Stuff
free(imageData);
return texture;
}
After setup I begin to draw an object.
First I call makeActiveAndBind.
Then I draw.
Then I call unbind.
- (void) makeActiveAndBind
{
glActiveTexture(_location);
glBindTexture(GL_TEXTURE_2D, _texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glUniform1i(_uniform, _location - GL_TEXTURE0);
}
- (void) unbind
{
glBindTexture(GL_TEXTURE_2D, 0);
}
Does anyone have any idea to this strange behavior?
The texture coordinates of the cube are [0,4]x[0,4]