Design Principles of Hardware-based Phong Shading and Bump Mapping

Bennebroek, K.; Ernst, Ines; Rüsseler, H.; Wittig, O.

doi:10.2312/eggh/eggh96/003-009

Cited by 3 publications

References 9 publications

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Antialiasing of Environment Maps

Schilling¹

2001

Computer Graphics Forum

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Environment maps, like texture maps or any other maps consisting of discretely stored data have to be properly filtered, if they are being resampled in the process of rendering an image. For environment maps, this is especially important, as the sampling rate is subject to extreme changes due to the curvature of the reflecting surfaces. However, for the same reason, the antialiasing is especially difficult to perform, as the sampling rate has to be determined for each pixel. We introduce a method to perform this calculation and determine the parameters for anisotropic filtering of the environment map. Instead of the BRDF, we employ roughness pyramids to account for the properties of the reflecting surface. The principles that are used to perform this antialiasing can be applied for antialiasing reflected textures in general e.g. in ray tracing.

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Antialiasing of Environment Maps

Schilling¹

2001

Computer Graphics Forum

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Real-time bump mapped texture shading based-on hardware acceleration

Wang

Sun

2004

Proceedings of the 2004 ACM SIGGRAPH International Conference on Virtual Reality Continuum and Its Applications in Industry - V

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It would be more convinced if we can provide more realistic visual effects in a VR system. Bump mapping can simulate a surface bumpy appearance without any overload of increasing extra polygons. Techniques of programmable per-vertex shader and per-pixel shader have been introduced in recent years based on newly developed graphics hardware armed with powerful GPU. This makes ease in realizing real-time bump mapping and complex lighting computation. Firstly, the mathematics of bump mapping is discussed. And then real-time bump mapping implementation using per-pixel shading supported by programmable hardware is described. Finally we present our experimental result. It shows our method is desirable.

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Imem

Kugler

1998

Proceedings of the ACM SIGGRAPH/EUROGRAPHICS Workshop on Graphics Hardware

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Design Principles of Hardware-based Phong Shading and Bump Mapping

Cited by 3 publications

References 9 publications

Antialiasing of Environment Maps

Antialiasing of Environment Maps

Real-time bump mapped texture shading based-on hardware acceleration

Imem

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