gentypen
vloadn
(
| size_t offset , |
const
gentype
*p) |
gentypen
vloadn
(
| size_t offset , |
const
constant
gentype
*p) |
Description
Return sizeof (gentypen) bytes of data read
from address (p + (offset * n)).
The read address computed as (p + (offset *
n)) must be 8-bit aligned if gentype is char
or uchar; 16-bit aligned if gentype is short,
ushort, or half; 32-bit aligned if gentype is int,
uint, or float; 64-bit aligned if gentype
is long or ulong.
If the half extension is enabled, the address computed as
(p + (offset * n)) must be
16-bit aligned.
Notes
The generic type gentype is used to indicate the built-in data types char, uchar, short, ushort, int, uint, long, ulong, float, or double.
The generic type name gentypen
represents n-element vectors of gentype
elements. The suffix n is also used in the
function names (i.e. vload,
nvstore, etc.), where
nn = 2, 3, 4, 8, or 16.
Vector Data Load and Store Functions allow you to read and write vector types from a pointer to memory.
The suffix n in the function names
(i.e. vloadn, vstoren etc.)
represent n-element
vectors, where n = 2, 3, 4, 8 or 16.
The results of vector data
load and store functions are undefined if the address being read from or written to is
not correctly aligned. The pointer argument p can be a pointer to
global,
local, or
private
memory for store functions. The pointer argument
p can be a pointer to global, local,
constant or private memory for load functions.
NOTE: The vector data load and store functions variants that take pointer arguments which point to the generic address space are also supported.
When extended by the
cl_khr_fp16 extension,
the generic type gentypen is extended to
include half, half2, half3, half4,
half8, and half16.
vload3 and vload_half3 read x,
y, z components from address (p +
(offset * 3)) into a 3-component vector.
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