VulkanHub
Function Prototype

vkCmdSetLogicOpEXT

Select which logical operation to apply for blend state dynamically for a command buffer
primary / secondary
both
graphics
state

To dynamically set the logical operation to apply for blend state, call:

void vkCmdSetLogicOpEXT(
    VkCommandBuffer commandBuffer,
    VkLogicOp logicOp);
  • commandBuffer is the command buffer into which the command will be recorded.
  • logicOp specifies the logical operation to apply for blend state.

This command sets the logical operation for blend state for subsequent drawing commands when drawing using shader objects, or when the graphics pipeline is created with VK_DYNAMIC_STATE_LOGIC_OP_EXT set in VkPipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, this state is specified by the VkPipelineColorBlendStateCreateInfo::logicOp value used to create the currently active pipeline.

Valid Usage

VUID-vkCmdSetLogicOpEXT-None-09422

At least one of the following must be true:

Valid Usage (Implicit)

VUID-vkCmdSetLogicOpEXT-commandBuffer-parameter

commandBuffer must be a valid VkCommandBuffer handle

VUID-vkCmdSetLogicOpEXT-logicOp-parameter

logicOp must be a valid VkLogicOp value

VUID-vkCmdSetLogicOpEXT-commandBuffer-recording

commandBuffer must be in the recording state

VUID-vkCmdSetLogicOpEXT-commandBuffer-cmdpool

The VkCommandPool that commandBuffer was allocated from must support graphics operations

VUID-vkCmdSetLogicOpEXT-videocoding

This command must only be called outside of a video coding scope

::

Host Synchronization

  • Host access to commandBuffer must be externally synchronized
  • Host access to the VkCommandPool that commandBuffer was allocated from must be externally synchronized ::