Question 5

Suppose we texture a rectangle with an image map. In order for one full instance of the image map to appear on the rectangle with the space around the four sides of the texture filled with the underlying geometry color, we must make the folllow choice

  1. make the smallest S and T coordinates smaller than 0 and the largest bigger than 1.
  2. make both the S and T wrapping option clamp to border with the alpha value of the border color set to 0.
  3. make the environment mode GL_DECAL.
  4. all of the above.