Auswahl der Mipmap-Ebenen für Texturfilterung

Details

Veröffentlichungs-Nr.

EP4123586

Aktenzeichen

EP22186120

Anmeldetag

20. Juli 2022

Veröffentlichung

25. Januar 2023

Rechtsraum

EP

IPC

G06T15/04

Abstract

There are provided methods and texture filtering units for applying texture filtering to a texture. The texture is represented with a mipmap comprising a plurality of levels, wherein each level of the mipmap comprises an image representing the texture at a respective level of detail. The texture filtering unit has minimum and maximum limits on an amount by which it can alter the level of detail when it filters texels from an image of a single level of the mipmap. The range of level of detail between the minimum and maximum limits defines an intrinsic region of the texture filtering unit. Levels of detail outside of the range of level of detail between the minimum and maximum limits define an extrinsic region of the texture filtering unit. An input level of detail for filtering the texture is received. If it is determined that the received input level of detail is in an intrinsic region of the texture filtering unit: texels are read from a single mipmap level of the mipmap, and the read texels from the single mipmap level are filtered with the texture filtering unit to determine a filtered texture value representing part of the texture at the input level of detail. If it is determined that the received input level of detail is in an extrinsic region of the texture filtering unit: texels are read from two mipmap levels of the mipmap, and the read texels from the two mipmap levels are processed with the texture filtering unit to determine a filtered texture value representing part of the texture at the input level of detail.

Anmelder

Firma

Imagination Technologies Limited

Land

🇬🇧 Großbritannien

Fachgebiete