|author||John Kessenich <email@example.com>||Sat Oct 08 17:56:28 2016 -0600|
|committer||John Kessenich <firstname.lastname@example.org>||Sat Oct 08 17:56:28 2016 -0600|
Correct Revision numbers for previous commit.
This repository contains machine-readable files from the SPIR-V Registry. This includes:
Under the include directory, header files are provided according to their own version. Only major and minor version numbers count. For example, the headers for SPIR-V 1.1 are in include/spirv/1.1. Also, the headers for the 1.0 versions of the GLSL.std.450 and OpenCL extended instruction sets are in include/spirv/1.0.
In contrast, the XML registry file has a linear history, so it is not tied to SPIR-V specification versions.
When a new version or revision of the SPIR-V header files are published, the SPIR Working Group will push new commits onto master, updating the files under include. A newer revision of a header file always replaces an older revision of the same version. For example, verison 1.0 Rev 4 of
spirv.h is placed in
include/spirv/1.0/spirv.h and if there is a Rev 5, then it will be placed in the same location.
The SPIR-V XML registry file is updated by the Khronos registrar whenever a new enum range is allocated.
In particular, pull requests that update header files will not be accepted. Issues with the header files should be filed in the issue tracker.
mkdir build cd build cmake .. # Linux cmake --build . --target install-headers # Windows cmake --build . --config Debug --target install-headers
Then, for example, you will have
If you want to install them somewhere else, then use
-DCMAKE_INSTALL_PREFIX=/other/path on the first
A CMake-based project can use the headers without installing, as follows:
add_subdirectorydirective to include this source tree.
#includedirectives that explicitly mention the
spirvpath component. For example the following uses SPIR-V 1.1 core instructions, and the 1.0 versions of the GLSL.std.450 and OpenCL extended instructions.
#include "spirv/1.0/GLSL.std.450.h" #include "spirv/1.0/OpenCL.std.h" #include "spirv/1.1/spirv.hpp"
See also the example subdirectory. But since that example is inside this repostory, it doesn't use and
How are different versions published?
All versions are present in the master branch of the repository. They are located in different subdirectories under include/spirv, where the subdirectory at that level encodes the major and minor version number of the relevant spec.
An application should consciously select the targeted spec version number, by naming the specific version in its
#include directives, as above and in the examples.
How do you handle the evolution of extended instruction sets?
Extended instruction sets evolve asynchronously from the core spec. Right now there is only a single version of both the GLSL and OpenCL headers. So we don't yet have a problematic example to resolve.
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