C Specification

The VkPipelineColorBlendAttachmentState structure is defined as:

// Provided by VK_VERSION_1_0
typedef struct VkPipelineColorBlendAttachmentState {
    VkBool32                 blendEnable;
    VkBlendFactor            srcColorBlendFactor;
    VkBlendFactor            dstColorBlendFactor;
    VkBlendOp                colorBlendOp;
    VkBlendFactor            srcAlphaBlendFactor;
    VkBlendFactor            dstAlphaBlendFactor;
    VkBlendOp                alphaBlendOp;
    VkColorComponentFlags    colorWriteMask;
} VkPipelineColorBlendAttachmentState;

Members

  • blendEnable controls whether blending is enabled for the corresponding color attachment. If blending is not enabled, the source fragment’s color for that attachment is passed through unmodified.

  • srcColorBlendFactor selects which blend factor is used to determine the source factors (Sr,Sg,Sb).

  • dstColorBlendFactor selects which blend factor is used to determine the destination factors (Dr,Dg,Db).

  • colorBlendOp selects which blend operation is used to calculate the RGB values to write to the color attachment.

  • srcAlphaBlendFactor selects which blend factor is used to determine the source factor Sa.

  • dstAlphaBlendFactor selects which blend factor is used to determine the destination factor Da.

  • alphaBlendOp selects which blend operation is use to calculate the alpha values to write to the color attachment.

  • colorWriteMask is a bitmask of VkColorComponentFlagBits specifying which of the R, G, B, and/or A components are enabled for writing, as described for the Color Write Mask.

Description

Valid Usage
  • VUID-VkPipelineColorBlendAttachmentState-srcColorBlendFactor-00608
    If the dual source blending feature is not enabled, srcColorBlendFactor must not be VK_BLEND_FACTOR_SRC1_COLOR, VK_BLEND_FACTOR_ONE_MINUS_SRC1_COLOR, VK_BLEND_FACTOR_SRC1_ALPHA, or VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA

  • VUID-VkPipelineColorBlendAttachmentState-dstColorBlendFactor-00609
    If the dual source blending feature is not enabled, dstColorBlendFactor must not be VK_BLEND_FACTOR_SRC1_COLOR, VK_BLEND_FACTOR_ONE_MINUS_SRC1_COLOR, VK_BLEND_FACTOR_SRC1_ALPHA, or VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA

  • VUID-VkPipelineColorBlendAttachmentState-srcAlphaBlendFactor-00610
    If the dual source blending feature is not enabled, srcAlphaBlendFactor must not be VK_BLEND_FACTOR_SRC1_COLOR, VK_BLEND_FACTOR_ONE_MINUS_SRC1_COLOR, VK_BLEND_FACTOR_SRC1_ALPHA, or VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA

  • VUID-VkPipelineColorBlendAttachmentState-dstAlphaBlendFactor-00611
    If the dual source blending feature is not enabled, dstAlphaBlendFactor must not be VK_BLEND_FACTOR_SRC1_COLOR, VK_BLEND_FACTOR_ONE_MINUS_SRC1_COLOR, VK_BLEND_FACTOR_SRC1_ALPHA, or VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA

  • VUID-VkPipelineColorBlendAttachmentState-colorBlendOp-01406
    If either of colorBlendOp or alphaBlendOp is an advanced blend operation, then colorBlendOp must equal alphaBlendOp

  • VUID-VkPipelineColorBlendAttachmentState-advancedBlendIndependentBlend-01407
    If VkPhysicalDeviceBlendOperationAdvancedPropertiesEXT::advancedBlendIndependentBlend is VK_FALSE and colorBlendOp is an advanced blend operation, then colorBlendOp must be the same for all attachments

  • VUID-VkPipelineColorBlendAttachmentState-advancedBlendIndependentBlend-01408
    If VkPhysicalDeviceBlendOperationAdvancedPropertiesEXT::advancedBlendIndependentBlend is VK_FALSE and alphaBlendOp is an advanced blend operation, then alphaBlendOp must be the same for all attachments

  • VUID-VkPipelineColorBlendAttachmentState-advancedBlendAllOperations-01409
    If VkPhysicalDeviceBlendOperationAdvancedPropertiesEXT::advancedBlendAllOperations is VK_FALSE, then colorBlendOp must not be VK_BLEND_OP_ZERO_EXT, VK_BLEND_OP_SRC_EXT, VK_BLEND_OP_DST_EXT, VK_BLEND_OP_SRC_OVER_EXT, VK_BLEND_OP_DST_OVER_EXT, VK_BLEND_OP_SRC_IN_EXT, VK_BLEND_OP_DST_IN_EXT, VK_BLEND_OP_SRC_OUT_EXT, VK_BLEND_OP_DST_OUT_EXT, VK_BLEND_OP_SRC_ATOP_EXT, VK_BLEND_OP_DST_ATOP_EXT, VK_BLEND_OP_XOR_EXT, VK_BLEND_OP_INVERT_EXT, VK_BLEND_OP_INVERT_RGB_EXT, VK_BLEND_OP_LINEARDODGE_EXT, VK_BLEND_OP_LINEARBURN_EXT, VK_BLEND_OP_VIVIDLIGHT_EXT, VK_BLEND_OP_LINEARLIGHT_EXT, VK_BLEND_OP_PINLIGHT_EXT, VK_BLEND_OP_HARDMIX_EXT, VK_BLEND_OP_PLUS_EXT, VK_BLEND_OP_PLUS_CLAMPED_EXT, VK_BLEND_OP_PLUS_CLAMPED_ALPHA_EXT, VK_BLEND_OP_PLUS_DARKER_EXT, VK_BLEND_OP_MINUS_EXT, VK_BLEND_OP_MINUS_CLAMPED_EXT, VK_BLEND_OP_CONTRAST_EXT, VK_BLEND_OP_INVERT_OVG_EXT, VK_BLEND_OP_RED_EXT, VK_BLEND_OP_GREEN_EXT, or VK_BLEND_OP_BLUE_EXT

  • VUID-VkPipelineColorBlendAttachmentState-colorBlendOp-01410
    If colorBlendOp or alphaBlendOp is an advanced blend operation, then colorAttachmentCount of the subpass this pipeline is compiled against must be less than or equal to VkPhysicalDeviceBlendOperationAdvancedPropertiesEXT::advancedBlendMaxColorAttachments

  • VUID-VkPipelineColorBlendAttachmentState-constantAlphaColorBlendFactors-04454
    If the VK_KHR_portability_subset extension is enabled, and VkPhysicalDevicePortabilitySubsetFeaturesKHR::constantAlphaColorBlendFactors is VK_FALSE, srcColorBlendFactor must not be VK_BLEND_FACTOR_CONSTANT_ALPHA or VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA

  • VUID-VkPipelineColorBlendAttachmentState-constantAlphaColorBlendFactors-04455
    If the VK_KHR_portability_subset extension is enabled, and VkPhysicalDevicePortabilitySubsetFeaturesKHR::constantAlphaColorBlendFactors is VK_FALSE, dstColorBlendFactor must not be VK_BLEND_FACTOR_CONSTANT_ALPHA or VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA

Valid Usage (Implicit)
  • VUID-VkPipelineColorBlendAttachmentState-srcColorBlendFactor-parameter
    srcColorBlendFactor must be a valid VkBlendFactor value

  • VUID-VkPipelineColorBlendAttachmentState-dstColorBlendFactor-parameter
    dstColorBlendFactor must be a valid VkBlendFactor value

  • VUID-VkPipelineColorBlendAttachmentState-colorBlendOp-parameter
    colorBlendOp must be a valid VkBlendOp value

  • VUID-VkPipelineColorBlendAttachmentState-srcAlphaBlendFactor-parameter
    srcAlphaBlendFactor must be a valid VkBlendFactor value

  • VUID-VkPipelineColorBlendAttachmentState-dstAlphaBlendFactor-parameter
    dstAlphaBlendFactor must be a valid VkBlendFactor value

  • VUID-VkPipelineColorBlendAttachmentState-alphaBlendOp-parameter
    alphaBlendOp must be a valid VkBlendOp value

  • VUID-VkPipelineColorBlendAttachmentState-colorWriteMask-parameter
    colorWriteMask must be a valid combination of VkColorComponentFlagBits values

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 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0