VulkanHub
Function Prototype

vkCmdSetAlphaToCoverageEnableEXT

Specify the alpha to coverage enable state dynamically for a command buffer
primary / secondary
both
graphics
state

To dynamically set the alphaToCoverageEnable state, call:

void vkCmdSetAlphaToCoverageEnableEXT(
    VkCommandBuffer commandBuffer,
    VkBool32 alphaToCoverageEnable);
  • commandBuffer is the command buffer into which the command will be recorded.
  • alphaToCoverageEnable specifies the alphaToCoverageEnable state.

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

Valid Usage

VUID-vkCmdSetAlphaToCoverageEnableEXT-None-09423

At least one of the following must be true:

Valid Usage (Implicit)

VUID-vkCmdSetAlphaToCoverageEnableEXT-commandBuffer-parameter

commandBuffer must be a valid VkCommandBuffer handle

VUID-vkCmdSetAlphaToCoverageEnableEXT-commandBuffer-recording

commandBuffer must be in the recording state

VUID-vkCmdSetAlphaToCoverageEnableEXT-commandBuffer-cmdpool

The VkCommandPool that commandBuffer was allocated from must support graphics operations

VUID-vkCmdSetAlphaToCoverageEnableEXT-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 ::