SPV_EXT_shader_image

Name Strings

SPV_EXT_shader_image_int64

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Last Modified Date

2021-03-17

Revision

2

This extension is written against the SPIR-V Specification, Version 1.5, Revision 1, Unified.

This extension requires SPIR-V 1.0.

This extension enables the use of atomic, load, and store operations on images with a 64-bit format.

To use this extension within a SPIR-V module, the following OpExtension must be present in the module:

OpExtension "SPV_EXT_shader_image_int64"

Modify Section 3.11, "Image Formats", adding these rows to the Image Formats table:

Image Format	Enabling Capabilities
40	R64ui	Int64ImageEXT
41	R64i	Int64ImageEXT

Image Format

Enabling Capabilities

40

R64ui

Int64ImageEXT

41

R64i

Int64ImageEXT

Modify Section 3.31, "Capability", adding these rows to the Capability table:

Capability	Implicitly Declares
5016	Int64ImageEXT Uses atomic, load, or store instructions on images with 64-bit integer types. If using atomics, Int64Atomics must be declared.	Int64

Capability

Implicitly Declares

5016

Int64ImageEXT
Uses atomic, load, or store instructions on images with 64-bit integer types. If using atomics, Int64Atomics must be declared.

Int64

Rev	Date	Author	Changes
1	2019-10-23	Tobias Hector	Initial revision
2	2021-03-17	Spencer Fricke	Clarify Int64Atomics interaction