by Carsten Waechter, posted Aug 10 2015

Ray tracing has come a long way since Whitted's legendary paper "An Improved Illumination Model for Shaded Display" and it's about time we pay tribute: Nowadays ray tracing on GPUs is so fast that it's actually feasible to implement a ray tracer inside a ray tracer. For that we will use the Material Definition Language (MDL), which is fully supported inside NVIDIA Iray, a fast physically-based renderer. MDL is an easy-to-use domain specific language that describes a material by its two...

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