VK_KHR_shader_bfloat16

Other Extension Metadata

Last Modified Date

2024-04-09

IP Status

No known IP claims.

Contributors

• Tobias Hector, AMD
• Stu Smith, AMD
• Jeff Bolz, Nvidia
• Kévin Petit, Arm
• David Neto, Google
• Graeme Leese, Broadcom
• Ruihao Zhang, Qualcomm
• Mark Sheppard, Imagination
• Ben Ashbaugh, Intel
• Dmitry Sidorov, Intel
• Victor Mustya, Intel

Description

This extension enables support for bfloat16 (brain float) operations in shaders as defined in SPV_KHR_bfloat16.

New Structures

• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceShaderBfloat16FeaturesKHR

New Enum Constants

• VK_KHR_SHADER_BFLOAT16_EXTENSION_NAME
• VK_KHR_SHADER_BFLOAT16_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_BFLOAT16_FEATURES_KHR

If VK_KHR_cooperative_matrix is supported:

• Extending VkComponentTypeKHR:
  • VK_COMPONENT_TYPE_BFLOAT16_KHR

New SPIR-V Capabilities

• BFloat16TypeKHR
• BFloat16DotProductKHR
• BFloat16CooperativeMatrixKHR

Version History

• Revision 1, 2024-04-09 (Stu Smith)
  • Initial draft