C Specification

An identifier can be provided instead of shader code in an attempt to compile pipelines without providing complete SPIR-V to the implementation.

The VkPipelineShaderStageModuleIdentifierCreateInfoEXT structure is defined as:

// Provided by VK_EXT_shader_module_identifier
typedef struct VkPipelineShaderStageModuleIdentifierCreateInfoEXT {
    VkStructureType    sType;
    const void*        pNext;
    uint32_t           identifierSize;
    const uint8_t*     pIdentifier;
} VkPipelineShaderStageModuleIdentifierCreateInfoEXT;


  • sType is a VkStructureType value identifying this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • identifierSize is the size, in bytes, of the buffer pointed to by pIdentifier.

  • pIdentifier is a pointer to a buffer of opaque data specifying an identifier.


Any identifier can be used. If the pipeline being created with identifier requires compilation to complete the pipeline creation call, pipeline compilation must fail as defined by VK_PIPELINE_CREATE_FAIL_ON_PIPELINE_COMPILE_REQUIRED_BIT.

pIdentifier and identifierSize can be obtained from an VkShaderModuleIdentifierEXT queried earlier.

Valid Usage
  • VUID-VkPipelineShaderStageModuleIdentifierCreateInfoEXT-pNext-06850
    If this structure is included in a pNext chain and identifierSize is not equal to 0, the shaderModuleIdentifier feature must be enabled

  • VUID-VkPipelineShaderStageModuleIdentifierCreateInfoEXT-pNext-06851
    If this struct is included in a pNext chain of VkPipelineShaderStageCreateInfo and identifierSize is not equal to 0, the pipeline must be created with the VK_PIPELINE_CREATE_FAIL_ON_PIPELINE_COMPILE_REQUIRED_BIT flag set

  • VUID-VkPipelineShaderStageModuleIdentifierCreateInfoEXT-identifierSize-06852
    identifierSize must be less-or-equal to VK_MAX_SHADER_MODULE_IDENTIFIER_SIZE_EXT

Valid Usage (Implicit)
  • VUID-VkPipelineShaderStageModuleIdentifierCreateInfoEXT-sType-sType

  • VUID-VkPipelineShaderStageModuleIdentifierCreateInfoEXT-pIdentifier-parameter
    If identifierSize is not 0, pIdentifier must be a valid pointer to an array of identifierSize uint8_t 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.

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SPDX-License-Identifier: CC-BY-4.0