Hi folks,
I just started playing around with reflection mapping, using a TextureCubeMap. The first results are breathtaking, really a nice technique ;-) however, I have a question: when the map is projected onto a sphere (like in the attached image), the bottom face of the cube is spread around the rim of the sphere (the bottom face is the turquoise colored rim). It appears to me like the cube is mapped only to the visible hemisphere. I think this is hardly realistic !? Could someone explain why this must be so ? (without going too deep into projective geometry ;-) Thanks in advance, Peter <<sphere.jpg>>
<<attachment: sphere.jpg>>
