Question

I tried it:

CCSprite *background = [CCSprite spriteWithSpriteFrame:frame];
background.textureRect = CGRectMake(0, 0, calcadaWidth, winSize.height);
background.position = ccp(calcadaWidth * 0.5, winSize.height * 0.5);
ccTexParams params = {GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT};
[background.texture setTexParameters:&params];

It works if the texture is regular gl size such as 64×64, 128×128…
My texture is 126×70, then, using this code I get some black space between repeats.

Answer 1

Cocos2D uses OpenGL and one of the limitiation of OpenGL is that if you want a texture to repeat, it must be a power of two texture.

The black spaces you are getting is where OpenGL has padded your texture up to the next power of two.