Abstract
Learn how to achieve real-time, pixel-accurate volume visualization of volumetric splines objects using OpenGL 4.3. See unprecedented fast ray-casting through volumetric spline models where both the geometric shape and attached simulation results are represented as volumetric splines. The presented rendering method consists of two passes; the first pass use tessellator and atomic counters to find all ray-surface intersection points, while a second compute pass performs the ray traversal. Simulations using volumetric spline models are called isogeometric analysis, because they allow the same representation to be shared throughout the modeling and simulation stages. We provide fast, reliable visualization, achieving the ultimate goal in isogeometric analysis.