stencil-op

Vocabulary

gpu.state

Class description

stencil-ops are set as part of a stencil-mode and determine how the stencil buffer is modified by incoming fragments.

•	op-keep leaves the stencil buffer value unchanged.
•	op-zero sets the stencil buffer value to zero.
•	op-replace sets the stencil buffer value to the reference value.
•	op-invert bitwise NOTs the stencil buffer value.
•	op-inc-sat adds one to the stencil buffer value, leaving it unchanged if it is already the maximum storable value.
•	op-dec-sat subtracts one from the stencil buffer value, leaving it unchanged if it is already zero.
•	op-inc-wrap adds one to the stencil buffer value, wrapping the value to zero if it was the maximum storable value.
•	op-dec-wrap subtracts one from the stencil buffer value, wrapping the value to the maximum storable value if it was zero.

Definition

IN: gpu.state

MIXIN: stencil-op
INSTANCE: op-keep stencil-op
INSTANCE: op-zero stencil-op
INSTANCE: op-replace stencil-op
INSTANCE: op-invert stencil-op
INSTANCE: op-inc-sat stencil-op
INSTANCE: op-dec-sat stencil-op
INSTANCE: op-inc-wrap stencil-op
INSTANCE: op-dec-wrap stencil-op