公开(公告)号：US20140327668A1

公开(公告)日：2014-11-06

申请号：US14362326

申请日：2013-01-22

Applicant: ST-Ericsson sa

Inventor： Jacob Strom ,  Jim Rasmusson ,  Gilles Ries

IPC: G06T19/20 ,  G06T9/00

CPC classification number: G06T19/20 ,  G06T9/00 ,  G06T17/00 ,  G06T2210/32 ,  G06T2219/2012

Abstract: A conversion between two texture compression formats comprises calculations performed at index-level for reducing handling of values with color bit-length and an amount of calculations with color values. Format conversion can thus be performed in real time upon displaying an image using the compressed texture data, without significant slowing down of a display rate of the images. It may be implemented in particular for conversion from DXT1—to ETC1 compression format, and a non-flipped or flipped orientation of an ETC1—compressed texture data block can thus be determined from said texture data block as initially compressed in DXT1 format.

Abstract translation: 两种纹理压缩格式之间的转换包括在索引级执行的计算，以减少具有颜色位长度的值的处理和带有颜色值的计算量。 因此，可以在使用压缩纹理数据显示图像时实时执行格式转换，而不会显着降低图像的显示速率。 可以特别实现用于从DXT1到ETC1压缩格式的转换，并且因此可以从DXT1格式最初压缩的所述纹理数据块确定ETC1压缩纹理数据块的非翻转或翻转取向。

公开(公告)号：US09478069B2

公开(公告)日：2016-10-25

申请号：US14362326

申请日：2013-01-22

Applicant: ST-Ericsson SA

Inventor： Jacob Strom ,  Jim Rasmusson ,  Gilles Ries

IPC: G06T19/20 ,  G06T17/00 ,  G06T9/00

CPC classification number: G06T19/20 ,  G06T9/00 ,  G06T17/00 ,  G06T2210/32 ,  G06T2219/2012

Abstract: A conversion between two texture compression formats comprises calculations performed at index-level for reducing handling of values with color bit-length and an amount of calculations with color values. Format conversion can thus be performed in real time upon displaying an image using the compressed texture data, without significant slowing down of a display rate of the images. It may be implemented in particular for conversion from DXT1—to ETC1 compression format, and a non-flipped or flipped orientation of an ETC1—compressed texture data block can thus be determined from said texture data block as initially compressed in DXT1 format.

Abstract translation: 两种纹理压缩格式之间的转换包括在索引级执行的计算，以减少具有颜色位长度的值的处理和带有颜色值的计算量。 因此，可以在使用压缩纹理数据显示图像时实时执行格式转换，而不会显着降低图像的显示速率。 可以特别实现用于从DXT1到ETC1压缩格式的转换，并且因此可以从DXT1格式最初压缩的所述纹理数据块确定ETC1压缩纹理数据块的非翻转或翻转取向。