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{ lib, stdenv, fetchFromGitHub, cmake, python3, autoSignDarwinBinariesHook, cctools }:
# Like many google projects, shaderc doesn't gracefully support separately compiled dependencies, so we can't easily use
# the versions of glslang and spirv-tools used by vulkan-loader. Exact revisions are taken from
# https://github.com/google/shaderc/blob/known-good/known_good.json
# Future work: extract and fetch all revisions automatically based on a revision of shaderc's known-good branch.
let
glslang = fetchFromGitHub {
owner = "KhronosGroup";
repo = "glslang";
rev = "6be56e45e574b375d759b89dad35f780bbd4792f";
hash = "sha256-tktdsj4sxwQHBavHzu1x8H28RrIqSQs/fp2TQcVCm2g=";
};
spirv-tools = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Tools";
rev = "360d469b9eac54d6c6e20f609f9ec35e3a5380ad";
hash = "sha256-Bned5Pa6zCFByfNvqD0M5t3l4uAJYkDlpe6wu8e7a3U=";
};
spirv-headers = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Headers";
rev = "4183b260f4cccae52a89efdfcdd43c4897989f42";
hash = "sha256-RKjw3H1z02bl6730xsbo38yjMaOCsHZP9xJOQbmWpnw=";
};
in
stdenv.mkDerivation rec {
pname = "shaderc";
version = "2024.0";
outputs = [ "out" "lib" "bin" "dev" "static" ];
src = fetchFromGitHub {
owner = "google";
repo = "shaderc";
rev = "v${version}";
hash = "sha256-Cwp7WbaKWw/wL9m70wfYu47xoUGQW+QGeoYhbyyzstQ=";
};
postPatch = ''
cp -r --no-preserve=mode ${glslang} third_party/glslang
cp -r --no-preserve=mode ${spirv-tools} third_party/spirv-tools
ln -s ${spirv-headers} third_party/spirv-tools/external/spirv-headers
patchShebangs --build utils/
'';
nativeBuildInputs = [ cmake python3 ]
++ lib.optionals stdenv.hostPlatform.isDarwin [ cctools ]
++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [ autoSignDarwinBinariesHook ];
postInstall = ''
moveToOutput "lib/*.a" $static
'';
cmakeFlags = [ "-DSHADERC_SKIP_TESTS=ON" ];
# Fix the paths in .pc, even though it's unclear if all these .pc are really useful.
postFixup = ''
substituteInPlace "$dev"/lib/pkgconfig/*.pc \
--replace '=''${prefix}//' '=/' \
--replace "$dev/$dev/" "$dev/"
'';
meta = with lib; {
inherit (src.meta) homepage;
description = "Collection of tools, libraries and tests for shader compilation";
platforms = platforms.all;
license = [ licenses.asl20 ];
};
}
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