问如何使用glDrawTex*

EN

int sourceRect[4] = {0, 24, 8, 16};  // we'll use the rectangle from (0, 24) of
                                     // size (8, 16) in the texture or textures
                                     // that are currently active as the
                                     // source graphic...

// ... by saying as much to OpenGL
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, sourceRect);


// we'll then draw that at (x, y), with nominal depth z, so as
// to cover the screen area (width, height)
glDrawTexiOES(x, y, z, width, height);