atomicMax — perform an atomic max operation to a variable
||inout int mem,|
||inout uint mem,|
The variable to use as the target of the operation.
The data to be compared to
atomicMax performs an atomic comparison of
data to the contents of
mem, writes the maximum value into
mem and returns the original contents of
from before the comparison occured. The contents of the memory being updated by the atomic operation are
guaranteed not to be modified by any other assignment or atomic memory function in any shader
invocation between the time the original value is read and the time the new value is written.
Atomic memory functions are supported only for a limited set of variables. A shader will fail to compile if the value passed to the mem argument of an atomic memory function does not correspond to a buffer or shared variable. It is acceptable to pass an element of an array or a single component of a vector to the mem argument of an atomic memory function, as long as the underlying array or vector is a buffer or shared variable.
|OpenGL Shading Language Version|
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