公开(公告)号：US20190073308A1

公开(公告)日：2019-03-07

申请号：US16120025

申请日：2018-08-31

Applicant: Arm Limited

Inventor： Simon Alex CHARLES

IPC: G06F12/0862

CPC classification number: G06F12/0862 ,  G06F12/0888 ,  G06F12/0897 ,  G06F2212/1024 ,  G06F2212/455 ,  G06F2212/602 ,  G06F2212/6022 ,  G06F2212/6028 ,  G06T1/20 ,  G06T1/60

Abstract: A method of prefetching attribute data from storage for a graphics processing pipeline comprising a cache, and at least one buffer to which data is prefetched from the storage and from which data is made available for storing in the cache. The method comprises retrieving first attribute data from the storage, the first attribute data representative of a first attribute of a first vertex of a plurality of vertices of at least one graphics primitive, identifying the first vertex, and, in response to the identifying, performing a prefetch process. The prefetch process comprises prefetching second attribute data from the storage, the second attribute data representative of a second attribute of the first vertex, the second attribute being different from the first attribute, and storing the second attribute data in a buffer of the at least one buffer.

公开(公告)号：US20150120795A1

公开(公告)日：2015-04-30

申请号：US14584237

申请日：2014-12-29

Applicant: ARM Limited

Inventor： Jorn NYSTAD ,  Andreas Due ENGH-HALSTVEDT ,  Simon Alex CHARLES

IPC: G06F5/00

CPC classification number: G06F5/00 ,  G06F7/483 ,  G06F7/499 ,  G06F7/49963 ,  G06F9/30014 ,  G06F9/30025 ,  G06F2207/382 ,  H03M7/24

Abstract: Apparatus for processing data includes processing circuitry 16, 18, 20, 22, 24, 26 and decoder circuitry 14 for decoding program instructions. The program instructions decoded include a floating point pre-conversion instruction which performs round-to-nearest ties to even rounding upon the mantissa field of an input floating number to generate an output floating point number with the same mantissa length but with the mantissa rounded to a position corresponding to a shorter mantissa field. The output mantissa field includes a suffix of zero values concatenated the rounded value. The decoder for circuitry 14 is also responsive to an integer pre-conversion instruction to quantise and input integer value using round-to-nearest ties to even rounding to form an output integer operand with a number of significant bits matched to the mantissa size of a floating point number to which the integer is later to be converted using an integer-to-floating point conversion instruction.

Abstract translation: 用于处理数据的装置包括用于解码程序指令的处理电路16,18,20,22,24,26和解码器电路14。 所解码的程序指令包括一个浮点预转换指令，其执行圆到最近的连接，以便在输入浮点数的尾数字上偶数舍入以产生具有相同尾数长度但尾数四舍五入的输出浮点数 对应于较短的尾数字段的位置。 输出尾数字段包括将值的后缀连接在舍入值上。 用于电路14的解码器还响应于整数预转换指令，以使用向量到最近的系数对偶数四舍五入进行定量和输入整数值，以形成输出整数运算数，该输出整数操作数的数目与 使用整数到浮点转换指令后续整数的浮点数。