Torrance-Sparrow BRDF model with Blinn Microfacet Distribution

ReferencingĀ pbrt-v2. In the following image, the teapot use metal material, with copper Fresnel reflectance data. The next image is rendered using OpenCL. With approx. 1 million samples per pixel, the reflection inside the cooper sphere is refined. Using GPU acceleration gain significant rendering performance improvement. The above GPU render image ā€¦

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