vkCmdSetColorBlendEquationEXT(3)

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);

Parameters

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.

Description

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

VUID-vkCmdSetColorBlendEquationEXT-None-09423
At least one of the following must be true:
- The extendedDynamicState3ColorBlendEquation feature is enabled
- The shaderObject feature is enabled

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