This module allow you to compile glsl to Spir-V in Python. It leverages power of the great shaderc library to compile glsl.
def set_include_paths(paths):
"""Set include paths
This function allows you to update the include paths.
Include paths are used with #include <file>.
Args:
paths (list[str]): List of paths
"""
def compile_file_into_spirv(filepath, stage, optimization='size',
warnings_as_errors=False):
"""Compile shader file into Spir-V binary.
This function uses shaderc to compile your glsl file code into Spir-V
code.
Args:
filepath (str): Absolute path to your shader file
stage (str): Pipeline stage in ['vert', 'tesc', 'tese', 'geom',
'frag', 'comp']
optimization (str): 'zero' (no optimization) or 'size' (reduce size)
warnings_as_errors (bool): Turn warnings into errors
Returns:
bytes: Compiled Spir-V binary.
Raises:
CompilationError: If compilation fails.
"""
def compile_into_spirv(raw, stage, filepath, language="glsl",
optimization='size', suppress_warnings=False,
warnings_as_errors=False):
"""Compile shader code into Spir-V binary.
This function uses shaderc to compile your glsl or hlsl code into Spir-V
code. You can refer to the shaderc documentation.
Args:
raw (bytes): glsl or hlsl code (bytes format, not str)
stage (str): Pipeline stage in ['vert', 'tesc', 'tese', 'geom',
'frag', 'comp']
filepath (str): Absolute path of the file (needed for #include)
language (str): 'glsl' or 'hlsl'
optimization (str): 'zero' (no optimization) or 'size' (reduce size)
suppress_warnings (bool): True to suppress warnings
warnings_as_errors (bool): Turn warnings into errors
Returns:
bytes: Compiled Spir-V binary.
Raises:
CompilationError: If compilation fails.
"""Note (Linux): You need cmake and make
Note (Windows): You need cmake and Visual C++ 2015 Build Tools. Set environment configuration with Visual C++ 2015 x64 Native Build Tools Command Prompt in the start menu.
pip install pyshadercOr if you want the latest version:
git clone https://github.com/realitix/pyshaderc.git
cd pyshaderc
python setup.py build
python setup.py installSo simple !
import pyshaderc
spirv = pyshaderc.compile_file_into_spirv('/tmp/myshader.vs.glsl', 'vert')If you want more control, you can use the lower-level function
compile_into_spirv.
Pyshaderc supports #include preprocessor thanks to shaderc.
There are two ways to use it:
#include "myfile"
Include file relatively, it's intuitive.
#include <myfile>
Like in C, you can include from a list of paths. To use this way to include,
you must call set_include_paths with a list of directories to search for
before compiling your glsl code.
Download the last shaderc version on github, put the third party libs in it and just zip it. Then update the build script with the new zip name.
You can checkout my blog, I speak about PyShaderc: Blog
PyShaderc is supported by helpful 3rd parties via code contributions, test devices and so forth. Make our supporters happy and visit their sites!
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