Function subgroup_ballot_bit_extract

pub fn subgroup_ballot_bit_extract(value: SubgroupMask, index: u32) -> bool

Evaluates a value for all active invocations in the group, resulting in true if the bit in value that corresponds to index is set to one, otherwise the result is false.

Result Type must be a Boolean type.

Execution is a Scope that identifies the group of invocations affected by this command. It must be Subgroup.

value must be a vector of four components of integer type scalar, whose Width operand is 32 and whose Signedness operand is 0.

value is a set of bitfields where the first invocation is represented in the lowest bit of the first vector component and the last (up to the size of the group) is the higher bit number of the last bitmask needed to represent all bits of the group invocations.

index must be a scalar of integer type, whose Signedness operand is 0.

The resulting value is undefined if index is greater than or equal to the size of the group.

Requires Capability GroupNonUniformBallot.

Safety

• This function is safe
• Result is undefined if id is out of bounds