An efficient representation for irradiance environment maps
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Unified Approach to Prefiltered Environment Maps
Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Shape-dependent gloss correction
Proceedings of the 5th symposium on Applied perception in graphics and visualization
Real-time shading with filtered importance sampling
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
Visibility editing for all-frequency shadow design
EGSR'10 Proceedings of the 21st Eurographics conference on Rendering
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Correct perception of materials requires complex, natural illumination [Fleming et al. 2003]. Thus for material or lighting design applications, realistic, interactive rendering of objects with arbitrary materials under natural illumination is essential. We present a simple and efficient technique for real-time, image-based lighting of objects with spatially-varying, glossy materials. The key to our algorithm is combining BRDF-proportional importance sampling with environment map filtering to attain computationally efficient rendering amenable to the GPU.