One thing I noticed from the image is that it seems to be possible to use texture mapping to also simulate "lighting" and/or reflectiveness of the object without having to do ray tracing. The main caveat seems like it assumes a static light source and perhaps there are other drawbacks as well.
Nian980
Just an add-on comment to smsunarto: I believe you are referring to the last pin which is lit. I get your point that you can pre-draw a light onto the texture and it will be static, but I don't think anybody does it anymore, and I don't believe that is the case here. The lighting applied on the last pin in the image is not texturing but a different concept called materials and shading. This appears to be a basic phong shading applied here.
One thing I noticed from the image is that it seems to be possible to use texture mapping to also simulate "lighting" and/or reflectiveness of the object without having to do ray tracing. The main caveat seems like it assumes a static light source and perhaps there are other drawbacks as well.
Just an add-on comment to smsunarto: I believe you are referring to the last pin which is lit. I get your point that you can pre-draw a light onto the texture and it will be static, but I don't think anybody does it anymore, and I don't believe that is the case here. The lighting applied on the last pin in the image is not texturing but a different concept called materials and shading. This appears to be a basic phong shading applied here.