Intel Corporation

Telefonaktiebolaget Lm Ericsson (Publ)

Advanced Micro Devices Corporation

Michael Doggett

Carl Johan Gribel

Jacob Ström

Tomas G Akenine-Moller

Per Wennersten

Konstantine I Iourcha

Tomas Guy Akenine-Möller

Jim Rasmusson

A rasterizer, based on time-dependent edge equations, computes analytical visibility in order to render accurate motion blur. An oracle-based compression algorithm for the time intervals lowers the frame buffer requirements. High quality motion blurred scenes can be rendered using a rasterizer with rather low memory requirements. The resulting images may contain motion blur for both opaque and transparent objects.

Analytical motion blur rasterization with compression

Embodiments relate to compression and decompression of textures. A texel block () is compressed by specifying two major directions in the texel block () and defining the profiles of how the texel values change along the respective directions. The resulting compressed texel block () comprises two value codewords (), two line codewords (-) and a function codeword (). The two value codewords () are employed to calculate two texel values for the texel block (). The line codewords (-) are employed to determine equations of two lines () coinciding with the two major directions in the texel block (). Signed distances are calculated for each texel () from the texel position in the texel block () and to the two lines (). The signed distances are input to a function defined by the function codeword () to output two values from which weights are calculated and applied to the two texel values in order to get a representation of the texel value of a texel ().

Texture compression and decompression

A method and apparatus for angular invariant texture level of detail calculation is disclosed. The method includes a determination for a LOD that determines angular invariant LODs that result in efficient ASIC hardware implementation.

Method and apparatus for angular invariant texture level of detail generation

Growing community of inventors

Lund, Sweden

Michael Doggett