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{ lib, stdenv, fetchFromGitHub, cmake, darwin, python3 }:
# 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 = "18eef33bd7a4bf5ad8c69f99cb72022608cf6e73";
sha256 = "sha256-tkWVvYmSpJPaZ8VJOkAWndDWhA0PiHAkR3feBAo+knM=";
};
spirv-tools = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Tools";
rev = "c2d5375fa7cc87c93f692e7200d5d974283d4391";
sha256 = "sha256-tMJRljrlH+qb+27rTn+3LuEyMOVpiU0zSCiGNfUTb6g=";
};
spirv-headers = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Headers";
rev = "0c28b6451d77774912e52949c1e57fa726edf113";
sha256 = "sha256-KpCMceTV/BRaoJe1qeXhKYQNQqdGaM6Q9nklpJKzHFY=";
};
in stdenv.mkDerivation rec {
pname = "shaderc";
version = "2021.0";
outputs = [ "out" "lib" "bin" "dev" "static" ];
src = fetchFromGitHub {
owner = "google";
repo = "shaderc";
rev = "v${version}";
sha256 = "sha256-RfSMzrGVtdXbr/mjSrHoN447e3vMQfJbesQMvLOARBs=";
};
patchPhase = ''
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
'';
nativeBuildInputs = [ cmake python3 ] ++ lib.optionals stdenv.isDarwin [ darwin.cctools ];
postInstall = ''
moveToOutput "lib/*.a" $static
'';
cmakeFlags = [ "-DSHADERC_SKIP_TESTS=ON" ];
meta = with lib; {
inherit (src.meta) homepage;
description = "A collection of tools, libraries and tests for shader compilation";
platforms = platforms.all;
license = [ licenses.asl20 ];
};
}
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