20250168375. Decoding Texe (Imagination Technologies Limited)

DECODING TEXELS FROM A BLOCK OF ENCODED TEXTURE DATA

Abstract: a decoder for decoding texels of a p by q sub-block from a block of astc encoded texture data representing an n by m block of texels, where p≤n and q≤m. the decoder determines a position of a first texel of the sub-block with respect to the rows and/or columns of a weight grid comprising a first plurality of weights in a first plane; determines a position of a second texel of the sub-block with respect to the rows and/or columns of the weight grid; compares the positions of the first and second texels; extracts fewer than (p+1)(q+1) weights in response to determining that the positions of the first and second texels are between the upper-most and lower-most rows of a predetermined number of adjacent rows of the weight grid and/or the left-most and right-most columns of a predetermined number of adjacent columns of the weight grid; and decodes the texels in dependence on the extracted weights.

Inventor(s): Tijmen Spreij

CPC Classification: H04N19/44 (Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder)

Search for rejections for patent application number 20250168375