Graphics Gems Revisited

International audienceWe present an algorithm for rendering faceted colored gemstones in real time, using graphics hardware. Beyond the technical challenge of handling the complex behavior of light in such objects, a real time high quality rendering of gemstones has direct applications in the field of jewelry prototyping, which has now become a standard practice for replacing tedious (and less interactive) wax carving methods. Our solution is based on a number of controlled approximations of the physical phenomena involved when light enters a stone, which permit an implementation based on the most recent -- yet commonly available -- hardware features such as fragment programs, cube-mapping and floating-point rendering

On the Lapidary Style

“The lapidary style” suggests a manner of writing that runs close to working a material—carving lettering into rock, cutting a gem into fine facets. Poised between the properties of the stone and of the jewel, this term holds the tensions of stone’s solidity and light’s refraction. This discussion will range over the curious nature of this style, its virtues of concision and incisiveness, and what it might say about the “materiality” of language. The “lapidary” shows us the profound implication of a gestural style with meaning