Function spirv_std::arch::demote_to_helper_invocation
source · pub unsafe fn demote_to_helper_invocation()
Expand description
Demote fragment shader invocation to a helper invocation. Equivalvent to
discard()
in HLSL. Any stores to memory after this instruction are
suppressed and the fragment does not write outputs to the framebuffer.
Unlike super::kill, this does not necessarily terminate the invocation. It is not considered a flow control instruction (flow control does not become non-uniform) and does not terminate the block.
- Required Capabilities
DemoteToHelperInvocationEXT
- Required Extensions
SPV_EXT_demote_to_helper_invocation
§Safety
After this instruction executes, the value of a helper_invocation
builtin
variable is undefined. Use is_helper_invocation
to determine whether
invocations are helper invocations in the presence
of demote_to_helper_invocation.