title: Rotate Texture2d using rotation matrix
body: <p>I want to rotate 2d texture in cocos2d-x(opengl es) as i searched i should use rotation matrix 
  as this : </p>
  
  <blockquote>
    <p>(x = cos(deg) * x - sin(deg) * y y = sin(deg) * x + cos(deg) * y)</p>
  </blockquote>
  
  <p>but when i want to implement this formula i fail may code is like(i want original x and y to be same ) : 
  i updated my code to this but still not working!</p>
  
  <pre><code>     GLfloat    coordinates[] = {
          0.0f,   text-&gt;getMaxS(),
          text-&gt;getMaxS(),text-&gt;getMaxT(),
          0.0f,   0.0f,
          text-&gt;getMaxS(),0.0f };
       glMatrixMode(GL_MODELVIEW);
      glPushMatrix();
  
  
      GLfloat vertices[] = {  rect.origin.x,      rect.origin.y,                          1.0f,
                              rect.origin.x + rect.size.width,        rect.origin.y,                          1.0f,
                              rect.origin.x,                          rect.origin.y + rect.size.height,       1.0f,
                              rect.origin.x + rect.size.width,        rect.origin.y + rect.size.height,       1.0f };
  
      glMultMatrixf(vertices);
      glTranslatef(p1.x, p1.y, 0.0f);
      glRotatef(a,0,0,1);
      glBindTexture(GL_TEXTURE_2D, text-&gt;getName());
      glVertexPointer(3, GL_FLOAT, 0, vertices);
      glTexCoordPointer(2, GL_FLOAT, 0, coordinates);
      glColor4f( 0, 0, 250, 1);
      glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
      glRotatef(-a, 0.0f, 0.0f, -1.0f);
      glPopMatrix();
  </code></pre>