C Specification

To dynamically set color blend factors and operations, call:

// Provided by VK_EXT_extended_dynamic_state3, VK_EXT_shader_object
void vkCmdSetColorBlendEquationEXT(
    VkCommandBuffer                             commandBuffer,
    uint32_t                                    firstAttachment,
    uint32_t                                    attachmentCount,
    const VkColorBlendEquationEXT*              pColorBlendEquations);


  • commandBuffer is the command buffer into which the command will be recorded.

  • firstAttachment the first color attachment the color blend factors and operations apply to.

  • attachmentCount the number of VkColorBlendEquationEXT elements in the pColorBlendEquations array.

  • pColorBlendEquations an array of VkColorBlendEquationEXT structs that specify the color blend factors and operations for the corresponding attachments.


This command sets the color blending factors and operations of the specified attachments for subsequent drawing commands when drawing using shader objects, or when the graphics pipeline is created with VK_DYNAMIC_STATE_COLOR_BLEND_EQUATION_EXT set in VkPipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, this state is specified by the VkPipelineColorBlendAttachmentState::srcColorBlendFactor, VkPipelineColorBlendAttachmentState::dstColorBlendFactor, VkPipelineColorBlendAttachmentState::colorBlendOp, VkPipelineColorBlendAttachmentState::srcAlphaBlendFactor, VkPipelineColorBlendAttachmentState::dstAlphaBlendFactor, and VkPipelineColorBlendAttachmentState::alphaBlendOp values used to create the currently active pipeline.

Valid Usage
Valid Usage (Implicit)
  • VUID-vkCmdSetColorBlendEquationEXT-commandBuffer-parameter
    commandBuffer must be a valid VkCommandBuffer handle

  • VUID-vkCmdSetColorBlendEquationEXT-pColorBlendEquations-parameter
    pColorBlendEquations must be a valid pointer to an array of attachmentCount valid VkColorBlendEquationEXT structures

  • VUID-vkCmdSetColorBlendEquationEXT-commandBuffer-recording
    commandBuffer must be in the recording state

  • VUID-vkCmdSetColorBlendEquationEXT-commandBuffer-cmdpool
    The VkCommandPool that commandBuffer was allocated from must support graphics operations

  • VUID-vkCmdSetColorBlendEquationEXT-videocoding
    This command must only be called outside of a video coding scope

  • VUID-vkCmdSetColorBlendEquationEXT-attachmentCount-arraylength
    attachmentCount must be greater than 0

Host Synchronization
  • Host access to commandBuffer must be externally synchronized

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

Command Properties
Command Buffer Levels Render Pass Scope Video Coding Scope Supported Queue Types Command Type






See Also

Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0