Version 1.00

Contact

To report problems with this extension, please open a new issue at:

https://github.com/KhronosGroup/SPIRV-Headers

Contributors

  • Jeff Bolz, NVIDIA Corporation

Notice

Copyright (c) 2019-2020 The Khronos Group Inc. Copyright terms at http://www.khronos.org/registry/speccopyright.html

Status

  • Not Yet Approved by the SPIR-V Working Group

Version

Last Modified Date

2020-02-11

Revision

1

Dependencies

This extension is written against the SPIR-V Specification, Version 1.4 Revision 1.

This instruction set requires SPIR-V 1.0.

1. Introduction

This specifies the NonSemantic.DebugPrintf extended instruction set. It provides a DebugPrintf instruction which is intercepted by the Vulkan validation layers and replaced with code to output the string to the debug output log.

Import this extended instruction set using an OpExtInstImport "NonSemantic.DebugPrintf" instruction.

2. Binary Form

DebugPrintf

Writes output to an implementation-defined stream under control of the string pointed to by Format, which can include format specifiers that control how subsequent arguments are converted for output. If there are insufficient arguments for the format specifiers, the behavior is undefined. If the format is exhausted while arguments remain, the excess arguments are ignored. Interpretation of the format specifiers is specified by the client API.

Return Type must be OpTypeVoid.

Format must be an OpString.

Capability:

2+variable

1

<id>
Format

Optional <id>, <id>, …​

Issues

None.

Revision History

Rev Date Author Changes

1

2020-02-11

Jeff Bolz

Initial revision